View Full Version : Oklahoma Severe Weather Discussion - May 2011
bandnerd 05-23-2011, 02:08 PM I'm not so sure if its possible to "feel" instability, but something about today just doesn't feel right. Its cloudy but very warm and the humidity is absolutely disgusting outside, probably the most uncomfortable its been so far this spring. Plus there's a gentle SE breeze but the clouds are moving almost due west from what I can tell. Maybe its because I've got those images of Joplin stuck in my head, but I just feel a bit concerned about today and tomorrow.
I have to agree with you. I don't like the way it feels outside. It's just nasty. Guess I'll bring down the cat crates in case I have to make a quick escape to the laundry room.
blangtang 05-23-2011, 02:38 PM It was a couple years ago but I was listening to an actuary for an insurance company talk about the percentage of likelihood of a tornado directly affecting an individual who lives a life of 80 years in either Kansas or Oklahoma, and the final number was 4% over 80 years. I believe it was in some way regarding the pricing of property insurance.
It sure as hell seems like a higher chance when watching the local tv weather !!!
Joe Kimball 05-23-2011, 02:38 PM Thirded. It's the classic type of weather that usually occurs before a major tornadic storm.
Bunty 05-23-2011, 02:47 PM Tornado watch now out. Includes most of the western half of Oklahoma, but not Oklahoma County.
Thunder 05-23-2011, 02:51 PM The watch will expand as the storms evolution continues to grow and move eastward.
venture 05-23-2011, 03:24 PM http://www.spc.noaa.gov/products/watch/ww0345_radar.gif
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 345
NWS STORM PREDICTION CENTER NORMAN OK
230 PM CDT MON MAY 23 2011
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
WESTERN OKLAHOMA
NORTHWEST TEXAS
EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 230 PM UNTIL
1000 PM CDT.
SEVERAL TORNADOES
ISOLATED INTENSE TORNADOES POSSIBLE
WIDELY SCATTERED DAMAGING WINDS
ISOLATED WIND GUSTS TO 70 MPH POSSIBLE
WIDESPREAD LARGE HAIL
HAIL TO 3.0 INCHES IN DIAMETER LIKELY
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 60 STATUTE
MILES EAST AND WEST OF A LINE FROM 25 MILES NORTHEAST OF ALVA
OKLAHOMA TO 40 MILES SOUTH SOUTHEAST OF ALTUS OKLAHOMA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU5).
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND 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.
OTHER WATCH INFORMATION...CONTINUE...WW 338...WW 339...WW
340...WW 341...WW 342...WW 343...WW 344...
DISCUSSION...TCU/INCIPIENT TSTM DEVELOPMENT IS IN PROGRESS ALONG
DRYLINE IN WRN OK SW OF CSM. MODIFICATION OF 19Z OUN SOUNDING FOR
AIR MASS IMMEDIATELY E OF DRYLINE SUGGESTS THAT ENVIRONMENT IS
NEARLY UNCAPPED WITH MLCAPE OF 4000-5000 J/KG. WHILE PASSAGE OF
SHORT WAVE TROUGH TO THE NE IS NOT PARTICULARLY WELL-TIMED...STRONG
DIABATIC HEATING W OF DRYLINE SHOULD SERVE TO FOSTER AT LEAST
ISOLATED STORM DEVELOPMENT THIS AFTERNOON INTO EVENING.
INITIALLY...VERY LARGE HAIL WILL BE THE PRIMARY HAZARD WITH MATURE
SUPERCELLS GIVEN THE LOCALLY HIGHER T-TD SPREADS AND WEAK LOW-LEVEL
FLOW. THE POTENTIAL FOR TORNADOES WILL INCREASE THIS EVENING AS
LOW-LEVEL SHEAR STRENGTHENS AND LCL HEIGHTS LOWER.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
600. MEAN STORM MOTION VECTOR 27020.
TORNADO WATCH PROBABILITIES FOR WT 0345
NWS STORM PREDICTION CENTER NORMAN OK
0234 PM CDT MON MAY 23 2011
WT 0345
PROBABILITY TABLE:
PROB OF 2 OR MORE TORNADOES : 60%
PROB OF 1 OR MORE STRONG /F2-F5/ TORNADOES : 50%
PROB OF 10 OR MORE SEVERE WIND EVENTS : 30%
PROB OF 1 OR MORE WIND EVENTS >= 65 KNOTS : 30%
PROB OF 10 OR MORE SEVERE HAIL EVENTS : 80%
PROB OF 1 OR MORE HAIL EVENTS >= 2 INCHES : 90%
PROB OF 6 OR MORE COMBINED SEVERE HAIL/WIND EVENTS : 90%
&&
ATTRIBUTE TABLE:
MAX HAIL /INCHES/ : 3.0
MAX WIND GUSTS SURFACE /KNOTS/ : 60
MAX TOPS /X 100 FEET/ : 600
MEAN STORM MOTION VECTOR /DEGREES AND KNOTS/ : 27020
PARTICULARLY DANGEROUS SITUATION : NO
Roadhawg 05-23-2011, 04:43 PM Joplin, SE Kansas and NW Arkansas can't get a break from all the rain and storms this year.
Bunty 05-23-2011, 05:14 PM This significant weather advisory is for logan...noble and payne counties. At 504 pm cdt...a line of strong thunderstorms was located from 12 miles west of ceres to 6 miles northwest of cedar valley...moving east at 35 mph. Hazards include...
Hail up to the size of nickels...
Wind gusts to 50 mph...
Storm intensity is increasing and severe weather may develop rapidly. Stay alert and listen for warnings.
Bunty 05-23-2011, 06:10 PM Tornado watch now includes Lincoln and Payne Counties.
ou48A 05-23-2011, 10:08 PM When will there be a reasonable idea about how tonight’s activity will be affecting tomorrow’s storms?
BG918 05-23-2011, 10:36 PM When will there be a reasonable idea about how tonight’s activity will be affecting tomorrow’s storms?
I may be wrong but it should only affect Tuesday if there are storms early into late morning ongoing tomorrow across the state. Most of the activity is now dying down and moving to the east. If there are mostly clear skies the leftover outflow boundaries from tonight's storms could help trigger storms tomorrow as the dryline approaches.
I'm sure Venture will give a more extensive analysis in the morning.
ou48A 05-23-2011, 10:49 PM I may be wrong but it should only affect Tuesday if there are storms early into late morning ongoing tomorrow across the state. Most of the activity is now dying down and moving to the east. If there are mostly clear skies the leftover outflow boundaries from tonight's storms could help trigger storms tomorrow as the dryline approaches.
I'm sure Venture will give a more extensive analysis in the morning.
Thanks BG918
ou48A 05-23-2011, 10:50 PM It worries me that we have so many places of work here in Oklahoma that have such poor places to take shelter from tornadoes.
This is an issue that we may need to look at as a state and strengthen some of our safety construction codes?
venture 05-24-2011, 01:02 AM http://www.spc.noaa.gov/products/outlook/day1otlk_1200.gif
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1259 AM CDT TUE MAY 24 2011
VALID 241200Z - 251200Z
...THERE IS A HIGH RISK OF SVR TSTMS ACROSS PARTS OF SOUTH CENTRAL AND SOUTHEAST KANSAS SWD INTO PARTS OF CENTRAL AND EASTERN OKLAHOMA...
...THERE IS A MDT RISK OF SVR TSTMS ACROSS CENTRAL AND SOUTHEAST KANSAS...CENTRAL AND EASTERN OKLAHOMA...AND INTO WESTERN ARKANSAS...
...THERE IS A SLGT RISK OF SVR TSTMS FROM NEW ENGLAND SWD TO THE MID-ATLANTIC REGION...AND WWD INTO THE PLAINS...
...SYNOPSIS...
WITH CYCLONIC FLOW ALOFT TO PERSIST ACROSS THE NORTHEAST U.S. AND ERN CANADA...A STRENGTHENING MID-LEVEL SYSTEM -- ACCOMPANIED BY 70-PLUS KT MID-LEVEL JET -- IS FORECAST TO EMERGE INTO THE CENTRAL AND SRN PLAINS. BY THE END OF THE PERIOD...A DEEPENING UPPER LOW IS FORECAST ACROSS THE KS VICINITY -- WITH A 75 KT MID-LEVEL JET AROUND THE SRN PERIPHERY OF THIS SYSTEM.
AT THE SURFACE...A COLD FRONT WILL CONTINUE ADVANCING ACROSS ERN CANADA...MOVING EWD INTO NEW ENGLAND THROUGH THE AFTERNOON BUT BECOMING MORE WASHED OUT ACROSS THE MIDWEST/OH VALLEY WITH TIME.
FARTHER W...A LEE LOW IS FORECAST TO MOVE VERY SLOWLY EWD/NEWD ACROSS KS/OK...BUT SHOULD STRENGTHEN THROUGH THE AFTERNOON AS THE UPPER LOW DEEPENS. BY LATE AFTERNOON...A DRYLINE WILL EXTEND SWD ACROSS CENTRAL OK/CENTRAL TX AND A COMPOSITE WARM FRONT/OUTFLOW BOUNDARY SHOULD EXTEND SEWD ACROSS SRN KS/ERN OK AND INTO AR. THIS SURFACE SYSTEM WILL BECOME A FOCUS FOR THE DEVELOPMENT OF A POTENTIALLY SIGNIFICANT SEVERE WEATHER OUTBREAK FOCUSED ON KS/OK/WRN AR THROUGH THE AFTERNOON AND EVENING HOURS.
...CENTRAL AND SRN PLAINS...
A REGIONAL OUTBREAK OF SEVERE STORMS -- INCLUDING THE POTENTIAL FOR VERY LARGE HAIL...DAMAGING WINDS...AND SEVERAL LARGE/STRONG TORNADOES IS EXPECTED THIS AFTERNOON AND EVENING AS THE POWERFUL UPPER JET EMERGES INTO THE PLAINS DRIVING SURFACE CYCLOGENESIS.
ELEVATED STORMS MAY BE ONGOING ACROSS PARTS OF NRN KS AND NEB AT THE START OF THE PERIOD...WHILE A CAPPED WARM SECTOR HINDERS STORM DEVELOPMENT INTO THE AFTERNOON HOURS. BY MID AFTERNOON...SURFACE DEWPOINTS IN THE 60S TO NEAR 70 COMBINED WITH DAYTIME HEATING AND AN EWD SPREAD OF VERY STEEP MID-LEVEL LAPSE RATES ATOP THE WARM SECTOR WILL RESULT IN A VERY UNSTABLE ENVIRONMENT...WITH 100 MB MIXED-LAYER CAPE VALUES EXCEEDING 3000 TO 4000 J/KG ACROSS PARTS OF OK/KS AND INTO WRN AR E OF THE LOW/DRYLINE.
AS THE UPPER JET AND ASSOCIATED/DEEPENING UPPER SYSTEM EMERGE...A SLOWLY WEAKENING CAP SHOULD RESULT IN STORM INITIATION BY LATE AFTERNOON...FROM CENTRAL KS SWD INTO CENTRAL TX NEAR THE SURFACE LOW AND SWD ALONG THE DRYLINE. WITH MODERATE/BACKED LOW-LEVEL FLOW AHEAD OF THE SURFACE LOW VEERING AND INCREASING RAPIDLY THROUGH THE LOWER TROPOSPHERE TO SWLY AT 50 TO 60 KT AT MID LEVELS...SHEAR VERY SUPPORTIVE OF BOTH MID-LEVEL AND LOW-LEVEL ROTATION WILL ALLOW STORMS TO RAPIDLY BECOME SUPERCELLULAR. VERY LARGE HAIL...DAMAGING WINDS...AND SEVERAL POTENTIALLY SIGNIFICANT TORNADOES APPEAR LIKELY AS THE STORMS INCREASE AND SPREAD ACROSS KS/OK INTO WRN AR AND THEN LATER INTO WRN MO.
WHILE STORMS DEVELOPING SWD ACROSS CENTRAL TX ALONG THE DRYLINE SHOULD EVENTUALLY BEGIN DIMINISHING DURING THE EVENING AS BOUNDARY LAYER STABILIZATION/CAPPING BECOME REESTABLISHED...WIDESPREAD STORMS AND ASSOCIATED SEVERE POTENTIAL WILL CONTINUE INTO THE OVERNIGHT HOURS ACROSS KS/ERN OK/MO/AR. SLIGHTLY ELEVATED STORMS SHOULD ALSO INCREASE INTO NEB/IA AND VICINITY...ALONG WITH SOME ACCOMPANYING SEVERE THREAT.
...NEW ENGLAND SWD TO THE MID-ATLANTIC AND WWD INTO THE OH/TN/MID MS VALLEYS...
SHOWERS AND SCATTERED THUNDERSTORMS MAY BE ONGOING AT THE START OF THE PERIOD...AND AS AIRMASS DESTABILIZES AHEAD OF THE SURFACE COLD FRONT AWAY FROM LINGERING CLOUDS/PRECIPITATION...EXPECT CONVECTION TO REDEVELOP/INTENSIFY THROUGH THE AFTERNOON.
THE BELT OF STRONGEST FLOW ALOFT IS FORECAST TO REMAIN S OF THE OH RIVER...BUT INSTABILITY MAY BE MORE LIMITED ACROSS PARTS OF THIS REGION DEPENDING UPON THE EVOLUTION OF AN ONGOING BOW APPROACHING THE MID MS VALLEY REGION ATTM. OVERALL...EXPECT BROAD/WIDESPREAD ZONE OF SEVERE POTENTIAL NEAR AND SE OF THE COLD FRONT...WITH STRONGEST STORMS WITHIN MULTIPLE BANDS OF CONVECTION CAPABLE OF PRODUCING HAIL AND DAMAGING WINDS.
..GOSS.. 05/24/2011
http://www.spc.noaa.gov/products/outlook/day1probotlk_1200_torn.gif
http://www.spc.noaa.gov/products/outlook/day1probotlk_1200_wind.gif
http://www.spc.noaa.gov/products/outlook/day1probotlk_1200_hail.gif
venture 05-24-2011, 01:20 AM A closer in look to the outlook areas based on a state county map.
First graphic is the main outlook...in the old colors. Green = Slight, Yellow = Mod, Red = High.
http://www.storm-scope.com/outlooks/052411-day1.png
Tornado Outlook - Red = 30% Probability
http://www.storm-scope.com/outlooks/052411-day1-tor.png
blangtang 05-24-2011, 01:22 AM so its supposed to be mostly clouded, hot, muggy with a side of hail and a tornado or three
venture 05-24-2011, 01:41 AM Quick history in previous High Risks - http://en.wikipedia.org/wiki/List_of_SPC_high-risk_days
Last Oklahoma High Risk - May 19, 2010 (Norman and Moore EF4s)
Jesseda 05-24-2011, 09:35 AM today is suppose to be the busiest day for severe weather, and no one has posted in the past 8 hours, where is thunder at ?
FritterGirl 05-24-2011, 09:42 AM today is suppose to be the busiest day for severe weather, and no one has posted in the past 8 hours, where is thunder at ?
They're all hunkering down over computer models and swilling down caffeine in preparation for a busy afternoon and evening.
tornado74 05-24-2011, 09:43 AM Venture - what will the storm motions be? NE at 30-35?
BG918 05-24-2011, 09:47 AM today is suppose to be the busiest day for severe weather, and no one has posted in the past 8 hours, where is thunder at ?
Nothing to post yet. There is currently considerable cloudiness in central/east-central OK. It will be interesting to watch how that affects later this afternoon. The rain last night has also cooled things down in NE OK.
Jesseda 05-24-2011, 10:41 AM The sun is starting to peak out of the clouds here at Will rogers airport!
Thunder 05-24-2011, 10:43 AM From facebook: via Aaron Tuttle Meteorologist (weatherman)... "Still looking at model data, OMG. Pray hard, pray now. I can't stress this enough. We are in trouble folks. OKC=F5 bullseye" (ok, this freaks me out a bit!)
Jesseda 05-24-2011, 10:47 AM F5 bullseye? so are you trying to say the okc will probably see a large f5 tornado today?
From facebook: via Aaron Tuttle Meteorologist (weatherman)... "Still looking at model data, OMG. Pray hard, pray now. I can't stress this enough. We are in trouble folks. OKC=F5 bullseye" (ok, this freaks me out a bit!)
Thunder, posting stuff like this on KOCO's weather live wire and comments like "We're gonna die. :-(" is pretty stupid. People need to be informed without the hyperbole that works some people up TOO much. Try to think before you post dude.
bandnerd 05-24-2011, 10:58 AM The best we can all do is be prepared for whatever comes our way, hope for the best, and ignore those who are freaking out.
I've pulled down the cat crates, am about to make sure the laundry room can fit all of us in there, and updated the cat's name tags on their collars. My phone is fully charged. Later I'll go put my flower pots in a more secured location, if storms start heading this way. There's not much else I can do.
Thunder 05-24-2011, 11:04 AM It is very possible for a long-track, strong, violent EF-5 tornado to pay us a visit. When and where? We will have to wait and see. Maybe we will get lucky...
Roadhawg 05-24-2011, 11:08 AM It is very possible for a long-track, strong, violent EF-5 tornado to pay us a visit. When and where? We will have to wait and see. Maybe we will get lucky...
Get lucky in which way? Getting a F5 or not getting one?
Thunder 05-24-2011, 11:10 AM Get lucky in which way? Getting a F5 or not getting one?
Get lucky as in being spared.
.....
From NWS FB Page: US National Weather Service Norman Oklahoma
A very dangerous situation is developing for this afternoon and evening. Violent storms producing tornadoes will develop around 3pm and move east. Areas along and either side of Interstate 35 - including all of the OKC metro - will see tornadoes between 5pm and 7pm. You do not want to be on the road during that time. Spread the word!
Thunder 05-24-2011, 11:28 AM High Risk was just expanded!
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1125 AM CDT TUE MAY 24 2011
VALID 241630Z - 251200Z
...THERE IS A HIGH RISK OF SVR TSTMS THIS AFTERNOON AND EVENING OVER
PORTIONS OF SOUTHERN KS...CENTRAL AND EASTERN OK...AND NORTH CENTRAL
TX...
...THERE IS A MDT RISK OF SVR TSTMS OVER PARTS OF CENTRAL AND NORTH
TX...MOST OF OK...MUCH OF CENTRAL/EASTERN KS...CENTRAL AND SOUTHERN
MO...AND NORTHWEST AR....
...THERE IS A SLGT RISK OF SVR TSTMS OVER A LARGE AREA FROM THE
SOUTHERN PLAINS...ACROSS THE MID MS/OH/TN VALLEYS...INTO THE MID
ATLANTIC STATES AND SOUTHERN NEW ENGLAND....
...AN INTENSE OUTBREAK OF TORNADOES AND WIDESPREAD SEVERE
THUNDERSTORMS IS EXPECTED LATER TODAY OVER PORTIONS OF KS/OK/TX...
..CENTRAL/SOUTHERN PLAINS
MORNING SATELLITE LOOPS SHOW A VIGOROUS AND PROGRESSIVE MID/UPPER
LEVEL SHORTWAVE TROUGH OVER THE SOUTHERN ROCKIES. THIS FEATURE IS
FORECAST TO ROTATE RAPIDLY EASTWARD INTO THE PLAINS AND BECOME
NEGATIVELY-TILTED THIS EVENING. LATEST TCC PROFILER DATA SHOWS 90+
KNOT FLOW AT 6KM...INDICATIVE OF THE MID/UPPER LEVEL WIND MAX THAT
WILL NOSE INTO THE PLAINS THIS EVENING. MEANWHILE... SOUTHERLY LOW
LEVEL WINDS WILL MAINTAIN UPPER 60S AND LOWER 70S DEWPOINTS ACROSS
MUCH OF NORTH TX...OK...AND SOUTHERN/CENTRAL KS. BY MID AFTERNOON
THE DRYLINE WILL EXTEND FROM WEST-CENTRAL KS INTO WESTERN OK AND
WESTERN NORTH TX. STRONG HEATING AND RICH MOISTURE...COUPLED WITH
NEAR DRY-ADIABATIC MID LEVEL LAPSE RATES...WILL YIELD AN EXTREMELY
UNSTABLE AIR MASS WITH MLCAPE VALUES OF 4000-4500 J/KG.
PRESENT INDICATIONS AND LATEST OPERATIONS/MESOSCALE MODEL GUIDANCE
INDICATE THAT DISCRETE SUPERCELL THUNDERSTORMS WILL FORM ALONG THE
KS/OK DRYLINE BY MID AFTERNOON AND MOVE RAPIDLY NORTHEASTWARD WITH A
RISK OF A FEW TORNADOES AND VERY LARGE HAIL. EARLY IN THE
EVENT...THE GREATEST TORNADO THREAT WILL BE OVER KS AS STORMS
INTERACT WITH PRE-EXISTING OUTFLOW BOUNDARY AND BACKED LOW LEVEL
WINDS.
AS THE AFTERNOON PROGRESSES...CONTINUED HEATING AND LARGE SCALE LIFT
DUE TO APPROACHING UPPER TROUGH MAY LEAD TO MULTIPLE ROUNDS OF
CONVECTIVE DEVELOPMENT ALONG THE DRYLINE. THESE STORMS WILL ALSO
TRACK ACROSS THE HIGH RISK AREA DURING THE EVENING. LOW LEVEL WINDS
WILL BE STRENGTHENING...WITH ALL CONDITIONS FAVORING THE POTENTIAL
FOR LONG-TRACKED STRONG/VIOLENT TORNADOES AND VERY LARGE HAIL OVER
PORTIONS OF NORTH TX...CENTRAL OK...AND CENTRAL KS.
DURING THE LATE EVENING...STORMS ARE EXPECTED TO CONGEAL AND SPREAD
EASTWARD INTO PORTIONS OF MO/AR WITH AN ENHANCED RISK OF WIDESPREAD
DAMAGING WINDS AND HAIL.
http://kamala.cod.edu/SPC/day1.gif
^^^ Blue is the High Risk being expanded. Yeah, its a different graphic. The other graphic not yet updated.
The blue dotted is previous, then the solid line shows the expansion.
http://kamala.cod.edu/SPC/day1.tornado.gif
^^^ Probability of tornadoes dramatically increasing.
Decious 05-24-2011, 11:30 AM Get lucky as in being spared.
.....
From NWS FB Page: US National Weather Service Norman Oklahoma
A very dangerous situation is developing for this afternoon and evening. Violent storms producing tornadoes will develop around 3pm and move east. Areas along and either side of Interstate 35 - including all of the OKC metro - will see tornadoes between 5pm and 7pm. You do not want to be on the road during that time. Spread the word!
I believe the verbiage from their FB page says: MAY see tornadoes between 5pm and 7pm.
Roadhawg 05-24-2011, 11:34 AM I believe the verbiage from their FB page says: MAY see tornadoes between 5pm and 7pm.
funny how that one word was missing. I wondered how they could say we will have them.
Thunder 05-24-2011, 11:35 AM I believe the verbiage from their FB page says: MAY see tornadoes between 5pm and 7pm.
Yeah, I corrected it. lol We will see tornadoes.
venture 05-24-2011, 11:36 AM Full focus today is on the live blog chat at http://www.storm-scope.com Conditions will just be rapidly changing to much to post on any of the forums.
Take today seriously please.
Decious 05-24-2011, 11:39 AM Yeah, I corrected it. lol We will see tornadoes.
I dig it. :-) I understand man... I love the weather too.
Thunder 05-24-2011, 12:22 PM http://www.spc.noaa.gov/products/md/mcd0925.gif
MESOSCALE DISCUSSION 0925
NWS STORM PREDICTION CENTER NORMAN OK
1218 PM CDT TUE MAY 24 2011
AREAS AFFECTED...NW TX...WRN AND CNTRL OK
CONCERNING...SEVERE POTENTIAL...TORNADO WATCH LIKELY
VALID 241718Z - 241845Z
STORM INITIATION IS EXPECTED ACROSS WRN OK AND NW TX OVER THE NEXT
HOUR. SUPERCELLS SHOULD RAPIDLY DEVELOP WITH A THREAT FOR LARGE HAIL
AND TORNADOES. A TORNADO WATCH WILL LIKELY NEED TO BE ISSUED BY 18Z.
SFC ANALYSIS SHOWS A 997 MB LOW IN THE NRN TX PANHANDLE WITH A
DRYLINE EXTENDING SWD FROM THE LOW ACROSS FAR WRN OK INTO WEST TX.
THE DRYLINE IS STARTING TO ADVANCE EWD WITH VISIBLE SATELLITE
IMAGERY SHOWING AN EXPANDING FIELD OF CUMULUS FROM I-40 IN WRN OK
SWD TO NEAR SAN ANGELO IN WCNTRL TX. AS FURTHER DESTABILIZATION
OCCURS THIS AFTERNOON AND THE CAP WEAKENS...RAPID CELL INITIATION IS
EXPECTED TO OCCUR ALONG THIS CORRIDOR. AS THIS OCCURS...A 50 TO 65
KT MID-LEVEL JET EJECTING NEWD TOWARD THE SRN PLAINS WILL CREATE
STRONG DEEP LAYER SHEAR PROFILES VERY FAVORABLE FOR SUPERCELLS. AS
STORMS INTENSIFY...VERY LARGE HAIL GREATER THAN 2 INCHES IN DIAMETER
WILL BECOME LIKELY. IN ADDITION...A 30 TO 40 KT LOW-LEVEL JET IS IN
PLACE ACROSS NW TX AND WRN OK. AS THIS FEATURE
STRENGTHENS...LOW-LEVEL SHEAR WILL BECOME VERY FAVORABLE FOR
TORNADOES. WITH 0-3 KM STORM RELATIVE HELICITIES INCREASING INTO THE
450 TO 600 M2/S2 RANGE...LONG-TRACK STRONG TORNADOES ARE EXPECTED TO
OCCUR LATE THIS AFTERNOON INTO EARLY THIS EVENING.
Tornado Watch to come out within 30 minutes.
ou48A 05-24-2011, 12:48 PM According to the latest NOAA Norman weather brieffing.
They're saying that if you have friends/family that doesn’t pay much attention to the weather that you should call them and tell them that this is the day they need to.
Thunder 05-24-2011, 12:52 PM This is a PDS Tornado Watch! Very dangerous and serious! The last PDS watch issued was on April 27th in Alabama. There has been 3-4 PDS watches on average of 120 tornadoes each, as we all had seen the results in the past. DO NOT TAKE THIS LIGHTLY!
Bulletin - immediate broadcast requested
tornado watch outline update for wt 356
nws storm prediction center norman ok
1250 pm cdt tue may 24 2011
tornado watch 356 is in effect until 1000 pm cdt for the
following locations
okc003-005-011-013-015-017-019-027-029-031-033-037-039-043-047-
049-051-053-055-063-065-067-069-071-073-075-081-083-085-087-093-
095-099-103-107-109-113-117-119-123-125-133-137-141-149-151-
250300-
/o.new.kwns.to.a.0356.110524t1750z-110525t0300z/
ok
. Oklahoma counties included are
alfalfa atoka blaine
bryan caddo canadian
carter cleveland coal
comanche cotton creek
custer dewey garfield
garvin grady grant
greer hughes jackson
jefferson johnston kay
kingfisher kiowa lincoln
logan love major
marshall mcclain murray
noble okfuskee oklahoma
osage pawnee payne
pontotoc pottawatomie seminole
stephens tillman wa****a
http://www.spc.noaa.gov/products/watch/ww0356_radar_big.gif
Jesseda 05-24-2011, 12:55 PM Okay the news stations are making it already sound like its doomesday, saying stay in doors dont go out if at all possible this evening prepare to take shelter.. They are acting like its for sure..whats going on!!!
Thunder 05-24-2011, 01:05 PM http://images.scribblelive.com/2011/5/24/0402583d-6076-42b6-a9e7-1f25a49212e9_400.jpg
Roadhawg 05-24-2011, 01:06 PM Yeah, I corrected it. lol We will see tornadoes.
Please... no more editing, we want and need accurate information.
ou48A 05-24-2011, 01:37 PM Afternoon shift at Tinker AF has been told to not come to work.
All employers and schools should take note.
On edit ,,,,,,,There are conflicting reports about this per CH 4
Thunder 05-24-2011, 01:43 PM Radars streaming right now in the Live Chat on Storm-Scope.com. If you want to talk on there, make a post, I will approve and send you an invite to be on the panalist (off moderation).
ou48A 05-24-2011, 01:46 PM Radars streaming right now in the Live Chat on Storm-Scope.com. If you want to talk on there, make a post, I will approve and send you an invite to be on the panalist (off moderation).
I may not have much to say but seen me an invite.
Roadhawg 05-24-2011, 01:54 PM Radars streaming right now in the Live Chat on Storm-Scope.com. If you want to talk on there, make a post, I will approve and send you an invite to be on the panalist (off moderation).
Is it still building up? I don't see anything in Intellicast yet
Thunder 05-24-2011, 02:00 PM 3 cells developing rapidly. I'm posting the radar graphics on the LW. http://livewire.koco.com/Event/Live_Wire_Oklahoma_Severe_Weather_May_23
And Venture's chat and streaming radars is at http://www.storm-scope.com/chat.html
If you want to talk on there, go post, I will approve and send u invite to panalist, it will open in new window, but also keep the big chat screen open, cuz the panalist window is small, but use to talk.
Jesseda 05-24-2011, 02:09 PM They canceled Moore Christian schools graduation for tonight due to weather.. This thing is getting crazy..
Thunder 05-24-2011, 03:15 PM Tornado Outbreak is happening right now.
BG918 05-24-2011, 03:23 PM Surprised by the NE movement. I wonder if they will begin to shift to the east, the "right turn" supercells sometimes take when they veer from a NE movement to E. There are three main supercells but they are fairly close to each other which could somewhat limit their severe potential. If one dies down and they become more isolated that could increase the severity/tornadic potential.
OKC Metro has a couple hours to watch these storms very closely especially if they start to turn more to the E..
adaniel 05-24-2011, 03:51 PM Just FYI I looked up the traffic on google maps and again on OKTraffic.com and it has become ridicolously congested on the highways leaving OKC as a lot of people are leaving work early. If you need to eeave work or run some errands and don't want to get stuck in traffic your window may be narrowing, so consider wrapping it up wherever you are.
Thunder 05-24-2011, 04:11 PM http://www.storm-scope.com/chat.html
NUMEROUS LARGE VIOLENT TORNADOES, SOME UP TO A MILE WIDE, ARE ON THE GROUND RIGHT NOW HEADING EAST, SOME OF THOSE TORNADOES ARE HEADING TOWARD OKC AND THE METRO WITH MORE DEVELOPMENTS TO INCLUDE. KEEP UP TO DATE WITH VENTURE!
UnFrSaKn 05-24-2011, 08:02 PM http://vimeo.com/24197504
Martin 05-24-2011, 08:03 PM i got bored so i made this... -M
880
jn1780 05-24-2011, 08:11 PM It would have been catastrophic, if that storm in Canadian county was 20-25 miles further east. We also got lucky that the tornado down in Moore lifted.
UnFrSaKn 05-24-2011, 08:13 PM You forgot "debris ball".
Thunder 05-24-2011, 08:15 PM The clustering and merging of the storms was the saving grace. Too many cells formed too close together. If there was less cells, I wouldn't know how we would have survive. So, overall, a very lucky day compared to other events.
jn1780 05-24-2011, 08:35 PM The clustering and merging of the storms was the saving grace. Too many cells formed too close together. If there was less cells, I wouldn't know how we would have survive. So, overall, a very lucky day compared to other events.
Good thing those small "butterfly effects" worked in our favor. The dryline being a little bit further east and the cap being a little bit stronger would have made all the difference in the world. Not that I'm minimizing the impact the tornadoes had on everyone else in the state.
OSUMom 05-24-2011, 09:00 PM I do have a small complaint. On the way home from work I'm listening to both Gary England and Rick Mitchell (switching back and forth). They both had the tornado pegged down to the point where they were saying cross streets it was at. Then all of a sudden we get interrupted on all stations by the national weather service. First we have to listen to this annoying beep/noise for about 30 seconds (in which time the tornado could have turned and we would be hearing about it if we were still getting our weather guys) and then we get the robotic voice giving us some vague warning about a tornado that might be in the area. Duh. 30 seconds ago I could have told them exactly where the thing was. With the detailed information we were getting from the weather guys, I just didn't see the need for that interruption.
OSUMom 05-24-2011, 09:03 PM i got bored so i made this... -M
880
Nice. You mind if I share that?
Thunder 05-24-2011, 09:08 PM I do have a small complaint. On the way home from work I'm listening to both Gary England and Rick Mitchell (switching back and forth). They both had the tornado pegged down to the point where they were saying cross streets it was at. Then all of a sudden we get interrupted on all stations by the national weather service. First we have to listen to this annoying beep/noise for about 30 seconds (in which time the tornado could have turned and we would be hearing about it if we were still getting our weather guys) and then we get the robotic voice giving us some vague warning about a tornado that might be in the area. Duh. 30 seconds ago I could have told them exactly where the thing was. With the detailed information we were getting from the weather guys, I just didn't see the need for that interruption.
Really bad. They knew that local stations are broadcasting on multiple local radio stations. NWS just wanted to be attention whores. :-(
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