View Full Version : Severe Weather Outlook - Mon 7/13 through Mon 7/20



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venture
07-13-2009, 12:03 AM
Hey we're back...

http://www.spc.noaa.gov/products/outlook/day1otlk.gif

Current Conditions - Mesonet
http://www.mesonet.org//data/public/mesonet/maps/realtime/current.wx.gif

Visible Sat Image
http://weather.cod.edu/data/satellite/1km/Oklahoma.gif

Current Radar Mosaic
http://weather.cod.edu/data/nexrad/Oklahoma.gif

Latest Upper Air Sounding
http://weather.cod.edu/data/raob/ounskewt.GIF

venture
07-13-2009, 12:13 AM
Indications of the ridge backing out to the west finally and setting up a classic Northwest flow pattern for the next 7 days...ish.

Monday (today) - Complex should move through Northern and NE Oklahoma later in the day. May get an outflow boundary to give us some hope on Tuesday. Tuesday and Wednesday look pretty dry otherwise.

Thursday - Chance for some scattered storms in the area.

Friday - Complex of storms should form in SW Kansas over night and move into Western/Central OK in the morning.

Saturday - Should be dry.

Sunday - Looks like front settles in, rain develops along in throughout most of Oklahoma. Complex will get going in Southern Oklahoma and move into Northern Texas.

Monday - Chance of a complex rolling in later from Kansas. Precip estimates are crazy high right now for early Tuesday morning (7/21). Some where in the area of 2-4 inches of rains through most of OK.

Wednesday - Friday: Scattered stuff around.

Okay yeah I went really far out at the end here...oops.

Thunder
07-13-2009, 04:13 PM
There's some storms poppin up near Stillwater. Indications that we're in the beginning stage of the heat dome breaking down and shifting away.

westsidesooner
07-13-2009, 04:33 PM
I sure hope you're right about the rain next week. The possibility of the 2-4" you mentioned for Tuesday sounds awesome. Next Wednesdays my birthday so thatd be a great start to the party. I noticed the chance for mcs's next weekend and week but was afraid to mention it yet......afriad I might jinx it. lol But then again Im planning on going to the lake this weekend so itll probably rain like crazy.

Im tired of watching complex after complex of storms slide across Kansas then shoot thru Arkansas. Any particular day you think might be the best for a big complex V?

venture
07-13-2009, 05:06 PM
http://www.spc.noaa.gov/products/md/mcd1551.gif

MESOSCALE DISCUSSION 1551
NWS STORM PREDICTION CENTER NORMAN OK
0555 PM CDT MON JUL 13 2009

AREAS AFFECTED...NRN OK

CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE

VALID 132255Z - 140100Z

ISOLATED SEVERE WIND AND HAIL IS LIKELY OVER NRN OK.
HOWEVER...EXPECTED ISOLATED NATURE MAY PRECLUDE A WATCH.

TCU INCREASING WITHIN A WEAK SURFACE TROUGH AND SW OF AN OUTFLOW
BOUNDARY OVER SERN KS/NERN OK. MODERATE INSTABILITY IS IN PLACE WITH
RIDGE WEAKENING ALOFT. WATER VAPOR IMAGERY INDICATES A MID LEVEL
FEATURE...AS DO AREA WIND PROFILERS WITH VEERING WINDS OVER KS/MO
AND SOME BACKING AHEAD OF THIS FEATURE OVER OK AND WRN AR.
THUS...STORMS EXPECTED TO INCREASE IN COVERAGE OVER THE NEXT FEW
HOURS. ISOLATED DAMAGING WIND GUSTS ARE LIKELY GIVEN EXCESSIVE
DOWNDRAFT CAPE IN PLACE IN EXCESS OF 1600 J/KG. WNWLY STEERING FLOW
WOULD EVENTUALLY BRING STORMS INTO NERN OK LATER THIS EVENING.

A COOL POCKET EXISTS ALOFT WITH THE UPPER FEATURE WHICH MAY HELP
WITH HAIL PRODUCTION WITH SIZES UP TO GOLF BALL SIZE DESPITE HOT
SURFACE TEMPS.

..JEWELL.. 07/13/2009

bretthexum
07-13-2009, 08:30 PM
MCS season a month too late. Better late than never I guess. :)

Bunty
07-13-2009, 08:44 PM
There's some storms poppin up near Stillwater. Indications that we're in the beginning stage of the heat dome breaking down and shifting away.

That storm with the black hail core that threatened Stillwater quickly collapsed before it could do much of anything in Stillwater. In checking, the several weather stations in Stillwater that report precipitation data to wunderground.com, only one of them registered anything, and it was only .01.

westsidesooner
07-14-2009, 07:26 AM
MCS season a month too late. Better late than never I guess. :)

Tornado season came early, the heat came early, now the MCS season kicks off a month late......wonder what the fall and winter will be like. (cringe) On the plus side maybe we'll get some of the rain and cool temps my sister has been getting in KC for the last couple of days. High there yesterday was 81....sweeet. Downside, if the MCS's are strong enough it really sucks losing power in July. Been there done that. Talk about ying and yang. Like I mentioned earlier it'll probably rain like crazy since this is the first weekend I'll have a chance to go to the lake this summer. sigh.

venture
07-15-2009, 11:08 PM
Severe Weather Outlook for tonight:

...CNTRL HIGH PLAINS INTO THE OZARK PLATEAU...
NOCTURNAL STRENGTHENING OF A SOUTHERLY LOW-LEVEL JET ACROSS THE HIGH
PLAINS MAY SUPPORT STORM CONSOLIDATION AND UPSCALE CONVECTIVE GROWTH
ACROSS PARTS OF THE TEXAS/OKLAHOMA PANHANDLES THROUGH THE
KANSAS/OKLAHOMA BORDER VICINITY LATER THIS EVENING. IT IS
POSSIBLE...AS MODELS GENERALLY SUGGEST...THAT THIS FORCING COULD
BECOME COUPLED WITH AGEOSTROPHIC FORCING IN THE RIGHT ENTRANCE
REGION OF A HIGH LEVEL JET...AIDING THE EVOLUTION OF A LARGE
MESOSCALE CONVECTIVE SYSTEM IN THE PRESENCE OF MODERATE TO STRONG
POTENTIAL INSTABILITY. IF THIS OCCURS...WARM AND UNSATURATED
LOW-LEVEL THERMODYNAMIC PROFILES...FAIRLY STEEP MID-LEVEL LAPSE
RATES...AND ENHANCED SHEAR ASSOCIATED WITH EASTERLY NEAR SURFACE
FLOW TO THE NORTH OF THE FRONT WILL ALL CONTRIBUTE TO POTENTIAL FOR
DAMAGING WINDS...POSSIBLY AS FAR EAST AS THE OZARKS BY DAYBREAK
THURSDAY.

Will post the new Day 1 and Day 2 in an hour when it comes out.

venture
07-16-2009, 12:11 AM
Day 1 convective outlook
nws storm prediction center norman ok
1245 am cdt thu jul 16 2009

valid 161200z - 171200z

...there is a slgt risk of svr tstms today and tonight from parts of
the cntrl plains into the n cntrl gulf states...

...there is a slgt risk of svr tstms this afternoon across parts of
the northeast...

...synopsis...
Models indicate that a transition toward a more amplified mid/upper
flow pattern will continue through this forecast period. A
subtropical high center is progged to shift from the southern
rockies into the southern great basin today...with a ridge axis
building northward through areas along and to the lee of the
canadian rockies. At the same time...a downstream closed low/upper
trough is expected to continue digging through the upper great lakes
and upper mississippi valley region...with cyclonic flow
developing/sharpening southward through much of the mid south and
central/eastern gulf states by late tonight/early friday.

...cntrl/srn plains into lwr ms and tn valleys/nrn gulf states...
Before intrusions of cooler/drier air overspread and stabilize much
of the region later this week into the weekend...instability
associated with lingering moisture beneath increasingly
northwesterly flow is expected to be conducive to the formation of
strong/severe storm clusters today. Details of the convective
evolution are still at least somewhat uncertain...particularly in
light of ongoing convection from the upper tennessee valley/southern
appalachians into the south central plains. However...mid/upper 60s
dew points linger across kansas...where mid-level lapse rates will
remain steep...and boundary layer destabilization is expected to
become maximized by early this afternoon with cape of 2000-3000+
j/kg.

Models appear reasonably similar in suggesting that an impulse
digging southeast of the northern rockies may contribute to the
initiation of storms as early as 18-21z across southwest nebraska or
northwest kansas. Although mid-level flow fields may still be
relatively modest in strength...veering with height from light and
southerly at low-levels should be sufficient for supercells...
Before activity consolidates and grows upscale into one or more
storm clusters. Low-level thermodynamic profiles with steep lapse
rates and sizable temperature dew points spreads will be favorable
for strong downbursts and expanding surface cold pools accompanied
by strong gusty winds. Convection is expected to spread
southeastward across kansas through the afternoon...before possibly
turning more to the south and accelerating across oklahoma during
the evening as mid-level flow across the central plains continues to
strengthen and veer.

westsidesooner
07-16-2009, 09:58 AM
Finally the cool down is begining. :congrats:

And the prospect of rain....maybe heavy rain is looking better. Will be interesting to see how everything deveolps today/this evening. On the downside my weekend lake trip is out...grrrrrr. But maybe a nice MCS will blow through tongiht and keep me entertained.

Thunder
07-16-2009, 10:35 AM
KOCO is calling for Isolated Tornadoes today. :LolLolLol

venture
07-16-2009, 10:41 AM
Day 1 convective outlook
nws storm prediction center norman ok
1128 am cdt thu jul 16 2009

valid 161630z - 171200z

...there is a slgt risk of svr tstms this afternoon into tonight for
the ks/ok area into parts of the lower ms valley...

...there is a slgt risk of svr tstms this afternoon for ne pa...nrn
nj...central/ern ny ewd into interior srn new england...

...central plains to the lower ms valley through tonight...
Gradual amplification of the large scale pattern will continue
through tomorrow as a mid level low over wrn ontario digs sewd to
the upper great lakes. Several speed maxima will rotate sewd from
the nrn plains to the ms valley...around the srn/swrn periphery of
this low...while an associated cold front moves swd across the
central plains and sewd across the mid ms valley. Other smaller
scale mcv/s are embedded within this flow regime over nrn ks/se
neb/sw ia with ongoing thunderstorm clusters. This convection will
likely persist through the day and move sewd across central/ern ks
and wrn mo...and build wwd/swwd during the afternoon into w/sw ks.

A corridor of 65-70 f boundary layer dewpoints...surface heating in
advance of the ongoing storms...and steep mid level lapse rates will
result in moderate instability /mlcape 2000-3000 j/kg/ which will
support intensification of the storms this afternoon. Deep layer
wly/nwly shear will also be sufficient to maintain organized storm
clusters capable of producing damaging winds and large hail this
afternoon into tonight as the convection progresses sewd across
ok/ar.

venture
07-16-2009, 10:42 AM
KOCO is calling for Isolated Tornadoes today. :LolLolLol

Don't read into that graphic at all. That is just standard wording with any risk of severe weather. SPC has probabilities at 2% over Northern OK and Southern KS today.

Thunder
07-16-2009, 11:24 AM
Don't read into that graphic at all. That is just standard wording with any risk of severe weather. SPC has probabilities at 2% over Northern OK and Southern KS today.

:tiphat: I know that, Venture. Note the :LolLolLol .

westsidesooner
07-16-2009, 11:48 AM
KOCO is calling for Isolated Tornadoes today. :LolLolLol


Do you have a one track mind?..(tornadoes)..just kidding Thunder, Im excited about today prospects as well. And I know you care about bugs too!!! :poke:
Personally Im looking forward to a good old fashioned squall line this evening. Watch the storms in Kansas, they're moving south fast and should intensify this afternoon.

On second thought maybe I shouldnt play down the tornado possibility....last time I did that one almost landed on Venture.

Thunder
07-16-2009, 12:07 PM
On second thought maybe I shouldnt play down the tornado possibility....last time I did that one almost landed on Venture.

Don't forget the near-miss for Karrie. :sofa:

westsidesooner
07-16-2009, 01:05 PM
And so it begins.

Activity now forming along an arc on a fast moving OFB from around Medicine Lodge Kansas to just east of Ponca City to Chanute KS. Might be an MD coming out soon. I hope.

http://radar.weather.gov/radar.php?product=NCR&rid=vnx&loop=yes

venture
07-16-2009, 01:19 PM
Should have a watch rolling for Northern OK here before much longer. NE is covered under an MCD right now, but would think they'll blanket the entire part of Northern OK. Current convective trends seems to be quick development into hail storms once they get going.

http://www.spc.noaa.gov/products/md/mcd1579.gif

MESOSCALE DISCUSSION 1579
NWS STORM PREDICTION CENTER NORMAN OK
0158 PM CDT THU JUL 16 2009

AREAS AFFECTED...SERN KS / SWRN MO / NERN OK

CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE

VALID 161858Z - 162030Z

THE THREAT FOR AT LEAST ISOLATED SEVERE STORMS CAPABLE OF WIND/HAIL
IS EXPECTED TO INCREASE ACROSS AREA THIS AFTERNOON. CONVECTIVE
TRENDS ARE BEING MONITORED FOR A WW.

A COMPLEX SURFACE PATTERN HAS EVOLVED TODAY OWING TO EFFECTS OF
OVERNIGHT CONVECTIVE ACTIVITY AND ONGOING STORMS. LATEST
MESOANALYSIS..RADAR AND SATELLITE DATA ALL DEPICT A WELL-DEFINED
OUTFLOW BOUNDARY ARCING FROM NEAR SZL SWWD TO E OF CNU AND S OF ICT.
THE NRN EXTENSION OF THIS OUTFLOW BOUNDARY THEN LINKS TO A
STATIONARY BOUNDARY WHICH TRAILS SEWD INTO SERN MO /S OF STL/.
FARTHER S...ONGOING STORMS AND ASSOCIATED CLOUD CANOPY HAVE
ESTABLISHED A POCKET OF COOLER TEMPERATURES OVER NERN OK INTO NRN
AR. AS A RESULT A NARROW AXIS OF STRONGER HEATING AND RESULTANT AIR
MASS DESTABILIZATION IS PRESENT FROM NEAR THE OK/KS BORDER NEWD INTO
SWRN MO WHERE MLCAPE HAS INCREASED TO 1000-1500 J/KG.

LOW-LEVEL ASCENT ALONG OUTFLOW BOUNDARY COUPLED WITH INFLUENCE OF
MCV OVER NWRN MO ARE CONTRIBUTING TO A GRADUAL INCREASE IN STORMS
FROM NEAR OR JUST N OF OUTFLOW BOUNDARY-STATIONARY FRONT
INTERSECTION N OF SZL SWWD INTO FAR SERN KS /E OF CNU/. THIS
ACTIVITY IS OCCURRING ALONG THE WRN/NWRN EDGE OF NARROW WARM SECTOR
/DELINEATED ABOVE/ WITH ADDITIONAL STORM DEVELOPMENT LIKELY OVER
PRIMARILY SWRN MO OVER THE NEXT SEVERAL HOURS.

LOCAL PROFILERS/VWPS INDICATE MODESTLY STRONG /35-40 KT/ DEEP-LAYER
SHEAR...SUPPORTIVE OF SOME STORM ORGANIZATION. THE PRIMARY CONCERN
FOR A POSSIBLY WW ISSUANCE IS THE RELATIVELY SMALL AREA OF STRONGER
INSTABILITY WHICH WOULD SUSTAIN MORE INTENSE STORMS.

westsidesooner
07-16-2009, 01:21 PM
Venture.....Do you think there will be a widespread wind damage threat today or just isolated pockets from downbursts?

venture
07-16-2009, 01:22 PM
And now SE OK.

ACUS11 KWNS 161920
SWOMCD
SPC MCD 161919
ARZ000-OKZ000-162015-

MESOSCALE DISCUSSION 1580
NWS STORM PREDICTION CENTER NORMAN OK
0219 PM CDT THU JUL 16 2009

AREAS AFFECTED...SERN OK / SWRN AR

CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE

VALID 161919Z - 162015Z

INCREASING POTENTIAL FOR ISOLD DMGG MICROBURSTS THIS AFTERNOON ACROSS SWRN AR. ANOTHER AREA OF CONCERN MAY ARISE IF TSTMS BECOME SURFACE-BASED OVER PARTS OF SERN OK. TRENDS WILL BE MONITORED FOR A POSSIBLE WW.

REGIONAL RADAR MOSAIC HAS SHOWN TSTMS DEVELOP OVER PARTS OF AR GENERALLY ALONG AND NEAR RESIDUAL OUTFLOW BOUNDARIES WHEREAS FURTHER W...MID-LEVEL CONVECTION HAS GRADUALLY DEEPENED RESULTING IN TSTMS OVER PARTS OF ERN OK DURING THE PAST HOUR. UNCERTAINTY REMAINS WHETHER CONVECTION OVER ERN OK WILL BECOME SURFACE BASED AHEAD OF SEEMINGLY WEAK MID-LEVEL ASCENT MOVING EWD ACROSS OK. A HOT/MOIST BOUNDARY LAYER WITH TEMPS RISING INTO THE LOWER-MID 90S RESIDES ACROSS THE REGION AS A SURFACE THERMAL RIDGE EXTENDS FROM NRN TX NEWD INTO SWRN AR. THIS IS CONTRIBUTING TO DCAPE IN EXCESS OF 1000 J/KG--SUPPORTIVE OF STRONG DOWNDRAFT POTENTIAL.

20-30 KT WLY MID-LEVEL FLOW EVIDENT ON AREA VWP DATA WILL LIKELY SERVE TO ENHANCE STORM ORGANIZATION POTENTIAL. ISOLD DMGG WIND GUSTS APPEAR TO BE THE PRIMARY THREAT AS INCREASING TSTM COVERAGE POSSIBLY LEADS TO A CONSOLIDATION OF ONE OR MORE W-E MOVING CLUSTERS.

venture
07-16-2009, 01:22 PM
Venture.....Do you think there will be a widespread wind damage threat today or just isolated pockets from downbursts?

Nothing wide spread. We aren't quite there yet...going into the weekend and next week when we are more in the MCS pattern, then we'll have that.

venture
07-16-2009, 02:43 PM
http://www.spc.noaa.gov/products/md/mcd1581.gif

MESOSCALE DISCUSSION 1581
NWS STORM PREDICTION CENTER NORMAN OK
0237 PM CDT THU JUL 16 2009

AREAS AFFECTED...FAR SWRN KS INTO THE OK AND NRN TX PNHDLS AND
NWRN/N-CNTRL OK

CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE

VALID 161937Z - 162100Z

THE THREAT FOR SEVERE STORMS IS EXPECTED TO INCREASE ACROSS
DISCUSSION AREA LATE THIS AFTERNOON INTO EVENING. CONVECTIVE TRENDS
ARE BEING MONITORED FOR A POSSIBLE WW.

SURFACE OBSERVATIONS AND VISIBLE SATELLITE DATA INDICATE AN OUTFLOW
BOUNDARY ARCING NWWD FROM N-CNTRL OK /NEAR PNC/ TO JUST W OF DDC AND
GCK. ANOTHER BOUNDARY INTERSECTED THE FORMER JUST W OF GCK BEFORE
ARCING SWWD THROUGH FAR SERN CO /S OF SPD AND TAD/. AIR MASS AHEAD
OF THESE BOUNDARIES IS EXPERIENCING NEAR FULL SOLAR INSOLATION WITH
TEMPERATURES IN THE UPPER 80S TO MID 90S. THE RICHEST BOUNDARY
LAYER MOISTURE RESIDES ACROSS N-CNTRL INTO NWRN OK WHERE DEWPOINTS
REMAIN INTO THE MID 60S TO LOWER 70S WITH MLCAPE OF 1500-2000 J/KG.
CONVECTIVE INSTABILITY DECREASES SLIGHTLY WITH WWD EXTENT THROUGH
THE OK/TX PNHDLS OWING TO DRIER BOUNDARY LAYER CONDITIONS.

SHORT TERM MODEL GUIDANCE SUGGESTS THAT TSTMS SHOULD INCREASE IN
COVERAGE THIS AFTERNOON INTO EVENING ALONG THESE BOUNDARIES AS WARM
SECTOR AIR MASS FURTHER DESTABILIZES AND REMAINING CONVECTIVE
INHIBITION ERODES. AREA PROFILERS AND VWPS INDICATE GENERALLY WEAK
WIND FIELDS THROUGH THE LOWEST 5-6 KM AGL WHICH SHOULD TEND TO LIMIT
THE POTENTIAL FOR WELL-ORGANIZED STORM FORMATION.
NONETHELESS...SOME POTENTIAL WILL EXIST FOR THE FORMATION OF STORM
CLUSTERS CAPABLE OF MAINLY DAMAGING WIND GUSTS GIVEN DCAPE OF
1000-1500 J/KG.

venture
07-16-2009, 03:24 PM
Bulletin - immediate broadcast requested
severe thunderstorm warning
national weather service norman ok
423 pm cdt thu jul 16 2009

the national weather service in norman has issued a

* severe thunderstorm warning for...
Western oklahoma county in central oklahoma...

* until 515 pm cdt

* at 423 pm cdt...national weather service doppler radar indicated a
severe thunderstorm over extreme northern oklahoma city...4 miles
west of downtown edmond...moving southeast at 10 mph.

Hazards in the warning include...
Hail up to the size of nickels...
Wind gusts to 60 mph...

* locations in the warning include central oklahoma city...del
city...forest park...lake aluma...midwest city...nichols hills...
Nicoma park...spencer...the village...tinker air force base...warr
acres and western edmond.

venture
07-16-2009, 03:33 PM
Get ready for some hail.

http://www.anvilcrawlers.com/pics/71609-hail.png

Strong winds around the area of the shelf cloud as well.

http://www.anvilcrawlers.com/pics/71609-wind.png

venture
07-16-2009, 03:36 PM
Watch for essentially the entire, except far northern part, of the Norman county warning area.

http://www.spc.noaa.gov/products/watch/ww0590_radar.gif

Urgent - immediate broadcast requested
severe thunderstorm watch number 590
nws storm prediction center norman ok
435 pm cdt thu jul 16 2009

the nws storm prediction center has issued a
severe thunderstorm watch for portions of

western and central oklahoma
extreme northern texas

effective this thursday afternoon from 435 pm until midnight cdt.

Hail to 2.5 inches in diameter...thunderstorm wind gusts to 70
mph...and dangerous lightning are possible in these areas.

The severe thunderstorm watch area is approximately along and 85
statute miles north and south of a line from 50 miles north
northeast of durant oklahoma to 40 miles west of clinton
oklahoma. For a complete depiction of the watch see the
associated watch outline update (wous64 kwns wou0).

Remember...a severe thunderstorm watch means conditions are
favorable for severe thunderstorms in and close to the watch
area. Persons in these areas should be on the lookout for
threatening weather conditions and listen for later statements
and possible warnings. Severe thunderstorms can and occasionally
do produce tornadoes.

Other watch information...continue...ww 587...ww 588...ww 589...

Discussion...thunderstorms continue to develop and intensify along
several remnant outflow boundaries over nrn and srn oklahoma.
Environment is very warm across much of the area with temperatures
of 95-100f which is contributing mlcape of 1500-2500 j/kg. Nwly
flow aloft is forecast to strengthen this evening which will enhance
deep layer shear and aid in storm organization and continued
potential for severe storms.

Aviation...a few severe thunderstorms with hail surface and aloft
to 2.5 inches. Extreme turbulence and surface wind gusts to 60
knots. A few cumulonimbi with maximum tops to 550. Mean storm
motion vector 27025.

venture
07-16-2009, 03:44 PM
440PM images...

http://www.anvilcrawlers.com/pics/71609-wind-440p.png

http://www.anvilcrawlers.com/pics/71609-hail-440p.png

Thunder
07-16-2009, 03:46 PM
Special message from NWS.

Get indoors...away from windows!

Oh how I love today!

venture
07-16-2009, 03:51 PM
http://www.anvilcrawlers.com/pics/71609-wind-449p.png

Hail core is still further north than the main wind.

http://www.anvilcrawlers.com/pics/71609-hail-449p.png

Karried
07-16-2009, 03:54 PM
whew what a doozie! Crazy, crazy! Wind gusts of 70+

Umbrella is in Arkansas.... huge hail - at least golf ball size... pouring rain still (South West Edmond) about 20 minutes ago.

venture
07-16-2009, 03:56 PM
http://www.anvilcrawlers.com/pics/71609-wind-457p.png

http://www.anvilcrawlers.com/pics/71609-hail-457p.png

venture
07-16-2009, 03:57 PM
Bulletin - immediate broadcast requested
severe thunderstorm warning
national weather service norman ok
456 pm cdt thu jul 16 2009

the national weather service in norman has issued a

* severe thunderstorm warning for...
Northeastern cleveland county in central oklahoma...

* until 600 pm cdt

* at 455 pm cdt...national weather service doppler radar indicated a
severe thunderstorm over central oklahoma city...12 miles northwest
of stanley draper lake...moving southeast at 15 mph.

Hazards in the warning include...
Hail up to the size of quarters...
Wind gusts of 60 to 70 mph...

* locations in the warning include northeastern norman...northern
lake thunderbird...southeastern oklahoma city...stanley draper lake
and stella.

venture
07-16-2009, 04:09 PM
Hail core just collapsed...watch out for higher winds.

http://www.anvilcrawlers.com/pics/71609-wind-505p.png

Thunder
07-16-2009, 04:12 PM
Geez, my post didn't go thru. I clicked right when power went out again.

Bad wind here, trees down, power line sparkling. Power keep going out. Friend at Crest in MWC says power is out.

Last I saw on 4 was them saying low level circulation near Walmart in Del City. Last message from mom was sirens sounding.

People running around crazy just before the rain outside.

venture
07-16-2009, 04:13 PM
KFOR is a bunch of morons that love over hyping. Anyway...

Thunder
07-16-2009, 04:13 PM
At the time of post, OGE reports...

16,667 (15,954 of that in the metro) is without power.

Thunder
07-16-2009, 04:14 PM
KFOR is a bunch of morons that love over hyping. Anyway...

Well, I live nearby and I saw those clouds lookin mighty funny with the swirling. Can you imagine the scare?!

venture
07-16-2009, 04:19 PM
Hail core moving south of I-240. This is from the Frederick radar site since the storm is too close to the Twin Lakes site in Cleveland County. This will be the last screen captures I do for a bit since it is moving away from the city proper.

http://www.anvilcrawlers.com/pics/71609-hail-513p.png

http://www.anvilcrawlers.com/pics/71609-wind-513p.png

OKCisOK4me
07-16-2009, 04:21 PM
Well if there's one thing that sucks (pun intended) about this thunderstorm is it's so big that the rest of us (west side of OKC) aren't going to see a drop. I'm at work and only got a couple of sprinkles!

Tex
07-16-2009, 04:23 PM
Power poles down in the street in front of Homeland at Santa Fe & Edmond Rd. Power is out over here. Fences are down too.

venture
07-16-2009, 04:31 PM
Yeah this one is going to miss us here in Norman it seems. There is another one trying to go up by Newcastle right now that should stay west of us here in Norman.

Thunder
07-16-2009, 04:33 PM
Venture, I hope all the data and videos you have seen are being saved, so that you can study them. I know that you mentioned the SPC put out 2% probability of a tornado. There was one that almost made it and I saw it outside and it was clear on the news stations when they broadcasted it. Almost a tornado. I'm convinced.

venture
07-16-2009, 04:34 PM
Bulletin - immediate broadcast requested
severe thunderstorm warning
national weather service norman ok
533 pm cdt thu jul 16 2009

the national weather service in norman has issued a

* severe thunderstorm warning for...
Southeastern cleveland county in central oklahoma...
Southern pottawatomie county in central oklahoma...

* until 630 pm cdt

* at 533 pm cdt...national weather service doppler radar indicated a
severe thunderstorm over eastern norman...5 miles northwest of lake
thunderbird...moving southeast at 20 mph.

Hazards in the warning include...
Hail up to the size of golfballs...
Destructive wind gusts of 65 to 75 mph...

* locations in the warning include bethel acres...brooksville...
Eastern norman...etowah...lake thunderbird...macomb...pink...st.
Louis...tribbey and trousdale.

Thunder
07-16-2009, 04:41 PM
OGE reports over 22,000 in the metro without power.

venture
07-16-2009, 05:31 PM
Here is what we have so far...

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
440 PM CDT THU JUL 16 2009

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0435 PM HAIL 3 SW EDMOND 35.62N 97.52W
07/16/2009 E1.75 INCH OKLAHOMA OK BROADCAST MEDIA

REPORTED AT MEMORIAL ROAD AND WESTERN BY KFOR-TV

0438 PM HAIL 5 WSW EDMOND 35.62N 97.55W
07/16/2009 M1.75 INCH OKLAHOMA OK PUBLIC

THE HAIL WAS REPORTED AT 150TH AND PENNSYLVANIA AVENUE.

0440 PM HAIL 5 SW EDMOND 35.60N 97.55W
07/16/2009 E1.00 INCH OKLAHOMA OK PUBLIC

THE HAIL WAS REPORTED NEAR 125TH AND PENNSYLVANIA AVENUE.


0444 PM HAIL 3 SW EDMOND 35.62N 97.51W
07/16/2009 E0.25 INCH OKLAHOMA OK PUBLIC

QUARTER TO GOLF BALL SIZE HAIL WAS REPORTED AT 150TH AND
SANTA FE.

0442 PM HAIL 2 SSE EDMOND 35.63N 97.46W
07/16/2009 E1.75 INCH OKLAHOMA OK NWS EMPLOYEE

0447 PM TSTM WND DMG OKLAHOMA CITY 35.47N 97.51W
07/16/2009 OKLAHOMA OK AMATEUR RADIO

THREE TO FOUR INCH DIAMETER TREE LIMBS BLOWN DOWN NEAR NE
23RD AND I-35.


0454 PM HAIL OKLAHOMA CITY 35.47N 97.51W
07/16/2009 E1.00 INCH OKLAHOMA OK AMATEUR RADIO

NE 23RD AND KELLEY AVENUE.

0502 PM TSTM WND DMG 5 ESE MOORE 35.31N 97.41W
07/16/2009 CLEVELAND OK TRAINED SPOTTER

GLASS DOORS BLOWN IN AT 29TH AND AIR DEPOT.

0510 PM HAIL 2 W WEWOKA 35.14N 96.53W
07/16/2009 E0.75 INCH SEMINOLE OK PUBLIC

0502 PM TSTM WND DMG 2 ESE DEL CITY 35.44N 97.41W
07/16/2009 OKLAHOMA OK TRAINED SPOTTER

CORRECTED REPORT FOR LOCATION. GLASS DOORS BLOWN IN AT SE
29TH AND AIR DEPOT.

0513 PM HAIL 4 SSE DEL CITY 35.39N 97.42W
07/16/2009 E2.00 INCH OKLAHOMA OK EMERGENCY MNGR

THE HAIL WAS REPORTED ON I-240 AND SOONER ROAD NEAR THE
GM PLANT.

0513 PM HAIL 2 SE MIDWEST CITY 35.44N 97.36W
07/16/2009 E0.88 INCH OKLAHOMA OK PUBLIC

THE HAIL WAS REPORTED ON I-40 AT MM 160.

0504 PM TSTM WND GST TINKER AIR FORCE BASE 35.42N 97.39W
07/16/2009 M72 MPH OKLAHOMA OK ASOS

0504 PM TSTM WND DMG 1 E DEL CITY 35.45N 97.42W
07/16/2009 OKLAHOMA OK AMATEUR RADIO

SEVERAL TREE LIMBS AND SIGNS WERE BLOWN DOWN AT ROSE
STATE COLLEGE.

0531 PM TSTM WND DMG DEL CITY 35.45N 97.44W
07/16/2009 OKLAHOMA OK TRAINED SPOTTER

POWER LINES DOWN AT RENO AND SUNNYLANE.

0539 PM HAIL 6 W ARAPAHO 35.58N 99.07W
07/16/2009 E0.88 INCH CUSTER OK TRAINED SPOTTER

0500 PM HAIL 2 E DEL CITY 35.45N 97.40W
07/16/2009 E3.00 INCH OKLAHOMA OK EMERGENCY MNGR

BASEBALL SIZE HAIL AND LARGER WAS REPORTED NEAR MIDWEST
CITY HIGH SCHOOL AND THE HOSPITAL.

0435 PM TSTM WND DMG 2 W EDMOND 35.65N 97.51W
07/16/2009 OKLAHOMA OK TRAINED SPOTTER

TWO POWER POLES SNAPPED NEAR EDMOND ROAD AND SANTA FE.
TWO OTHER POLES WERE SEVERELY DAMAGED.

0550 PM HAIL 9 ESE NORMAN 35.17N 97.29W
07/16/2009 E0.88 INCH CLEVELAND OK TRAINED SPOTTER

DIME TO NICKEL SIZE HAIL AND 50 MPH WINDS WERE REPORTED.

Thunder
07-16-2009, 10:18 PM
Surprise! Storms came out of nowhere and coming thru the main metro right now. All those west side, rain is pounding!

Thunder
07-17-2009, 05:45 AM
I noticed that power outages went up for Del City and Midwest City this morning.

Nearly 10,000 in the metro still without power this morning.

westsidesooner
07-17-2009, 07:50 AM
Well if there's one thing that sucks (pun intended) about this thunderstorm is it's so big that the rest of us (west side of OKC) aren't going to see a drop. I'm at work and only got a couple of sprinkles!

Yep....The westside was in the suck zone again. I did manage to get up to Wiley Post as the storm was moving over the village area then watched it as it headed southeast. There were some interesting cloud formations and what appeared to be a lowering on the westside of the storm. From my vantage point I could see the "lowering" (though very poorly organized) with a huge cloud of dust on both the south and west sides of it. Also the hail core was fairly visible and very impressive when sunlit from the west. The most we got here was maybe 45-50 mph gusts and sprinkles. AARRGGHH. I did get some pics as the storm past and will try to upload them today. I doubt they came out real good though because of the lack of contrast. I need a better camera!!!

And the storms that came through around 1130 last night gave us a gullywasher of .02 inches.

:woowoo:

Question for Venture: Yesterday as the storm that formed over the Deer Creek area (the southern of the two storms that merged and moved over the metro) was just going up I noticed what appeared to be a lenticular cloud forming over the main updraft tower. I dont think I've ever seen that before. Im guessing it was caused by a very strong updraft and figured the storm would turn out to be quiet severe. Unfortunately I didnt have my camera ready at that point. You ever heard of a lenticular cloud forming over a thunderstom updraft??? It was beautiful.

rod4soonrs
07-17-2009, 08:25 AM
anyone know how much rain we got?

westsidesooner
07-17-2009, 08:43 AM
http://www.mesonet.org//data/public/mesonet/maps/realtime/rain48.hour.gif?1247841490

Wiley Post recieved .02
Will rogers .23
Oklahoma City East 0.78
Oklahoma City North 1.11
Oklahoma City West 0.08

More detailed info here: Oklahoma Mesonet (http://www.mesonet.org/)

USG '60
07-17-2009, 09:09 AM
A can in my back yard (near 23rd and May) had nearly 2 inches in it this morning. It was dry and empty yesterday.

westsidesooner
07-17-2009, 10:30 AM
Amazing that USG got 2" while just 4 miles away it just sprinkled.

Here are a couple of pics I got as the storm passed just north and east of Wiley Post. I found it strange that planes would still be taking off and landing with so much strong wind in the area. In some of them (pics 9 on) you can see the dust cloud under the "lowering" and the sunlit hail core just behind it. As always they are best viewed by clicking the full screen option on the upper right.

2009-07-17 | Slideshow (http://cmd.shutterfly.com/commands/pictures/slideshow?site=snicksflicks&page=snicksflicks&album=442)

venture
07-17-2009, 12:35 PM
Something like this?

https://umdrive.memphis.edu/bblnknsh/public/cloud.jpg

I can remember seeing it once on a hail storm in SE Oklahoma back on March 30, 2006. Not as defined as this pic though.

westsidesooner
07-17-2009, 01:16 PM
Similar....there was more seperation between the top of the cumulonimbus and the lenticular cloud though. Ive only seen them in the mountains before yesterday. I'm kicking myself for not having my camera ready, it was really beautiful. Some storm spotter I am huh.....lol

venture
07-17-2009, 09:53 PM
This is one that I could find from the date I mentioned - sounds closer to what you are describing.

http://www.anvilcrawlers.com/coppermine/albums/userpics/10001/normal_P1010063.JPG

westsidesooner
07-18-2009, 08:49 AM
Thats more like what I saw..is it caused by an unusally strong updraft? just goes to show why you should always have your camera ready.

Bunty
07-18-2009, 12:09 PM
The encounter of the updraft with a cooler than normal layer of air has a lot to do with it as well.

venture
07-18-2009, 07:05 PM
Severe weather statement
national weather service norman ok
800 pm cdt sat jul 18 2009

okc083-190145-
/o.con.koun.sv.w.0561.000000t0000z-090719t0145z/
logan ok-
800 pm cdt sat jul 18 2009

...a severe thunderstorm warning remains in effect until 845 pm cdt
for southeastern logan county...

At 801 pm cdt...national weather service doppler radar detected a
severe thunderstorm 5 miles north of guthrie...moving south at 25
mph.

Hazards in the warning include...
Hail up to the size of ping pong balls...
Wind gusts to 60 mph...

* locations in the warning include guthrie...meridian and seward.

venture
07-18-2009, 07:27 PM
Bulletin - immediate broadcast requested
severe thunderstorm warning
national weather service norman ok
826 pm cdt sat jul 18 2009

the national weather service in norman has issued a

* severe thunderstorm warning for...
Southern logan county in central oklahoma...
Eastern oklahoma county in central oklahoma...

* until 930 pm cdt

* at 826 pm cdt...national weather service doppler radar indicated a
severe thunderstorm 10 miles north of edmond...moving south at 25
mph.

Hazards in the warning include...
Hail up to the size of golf balls...
Wind gusts to 60 mph...

* locations in the warning include arcadia...choctaw...del city...
Eastern oklahoma city...edmond...forest park...jones...lake
aluma...midwest city...newalla...nicoma park...spencer...tinker air
force base and valley brook.

http://www.anvilcrawlers.com/pics/71809-br-828p.png

venture
07-18-2009, 07:40 PM
Large hail core moving in Edmond.

http://www.anvilcrawlers.com/pics/71809-hail-840p.png