SoonerBeerMan
05-29-2013, 01:04 PM
NWS Norman @NWSNorman 6m 18Z sounding is in, and we have a pretty stout cap still in place. This will delay any storm development close to central OK for a while
View Full Version : Oklahoma Severe Weather Discussion - May 2013 SoonerBeerMan 05-29-2013, 01:04 PM NWS Norman @NWSNorman 6m 18Z sounding is in, and we have a pretty stout cap still in place. This will delay any storm development close to central OK for a while bchris02 05-29-2013, 01:15 PM NWS Norman @NWSNorman 6m 18Z sounding is in, and we have a pretty stout cap still in place. This will delay any storm development close to central OK for a while If the cap breaks, are we looking at immediate drops like we saw last week? bandnerd 05-29-2013, 01:25 PM If the cap breaks, are we looking at immediate drops like we saw last week? 3765 SoonerBeerMan 05-29-2013, 01:28 PM If the cap breaks, are we looking at immediate drops like we saw last week? Someone with more knowledge than me can answer, but understanding of what I'm seeing from NWS says no. They're less confident about tornado chances in this part of the state. My guess is they're leaning more towards a linear event by the times storms reach this part of the state. The dryline seems to be stuck out in the east TX panhandle. The same mantra applies...Don't be scared, be aware. CuatrodeMayo 05-29-2013, 01:41 PM https://www.youtube.com/watch?feature=player_embedded&v=oMa5EzF97NA Anonymous. 05-29-2013, 02:03 PM Right now the cloud cover in C and W OK will deter supercells. However in the TX panhandle it is clear and the dryline is firing right now. Supercells from this area will move east into W OK. If rapid clearing takes place inthe W half of OK we could see storms fire. But right now that looks unlikely. Look for a linesr event tonight in OKC at this point. ou48A 05-29-2013, 02:05 PM http://mesonet.agron.iastate.edu/wx/...e=201305291857 THE BEST TIMING FOR SEVERE THUNDERSTORMS LATER TODAY WILL BE BETWEEN 6 AND 9 PM CDT IN THE OKLAHOMA CITY METRO AREA. THE MAIN HAZARDS WILL BE VERY LARGE HAIL TO BASEBALLS...WIND GUSTS UP TO 75 MPH...AND HEAVY RAIN. TORNADOES MAY BE POSSIBLE AS WELL...THOUGH THE BEST CHANCE FOR TORNADOES WILL BE ACROSS WESTERN OKLAHOMA TODAY. DISCRETE SUPERCELL THUNDERSTORMS OVER WESTERN OKLAHOMA THIS AFTERNOON WILL LIKELY DEVELOP INTO A CLUSTER OR LINE BY THE TIME THEY MOVE INTO THE OKLAHOMA CITY METRO AREA THIS EVENING. THERE IS A LOW CHANCE THAT DISCRETE SUPERCELLS MAY DEVELOP THIS AFTERNOON ACROSS CENTRAL OKLAHOMA...WHICH WOULD INCREASE THE CHANCE FOR TORNADOES. venture 05-29-2013, 02:15 PM http://www.spc.noaa.gov/products/md/mcd0856.gif MESOSCALE DISCUSSION 0856 NWS STORM PREDICTION CENTER NORMAN OK 0206 PM CDT WED MAY 29 2013 AREAS AFFECTED...WEST AND NORTHWEST TX...SOUTHERN OK CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE VALID 291906Z - 292100Z PROBABILITY OF WATCH ISSUANCE...60 PERCENT SUMMARY...CONDITIONS ARE BECOMING MORE FAVORABLE FOR SCATTERED THUNDERSTORM DEVELOPMENT ACROSS PARTS OF WESTERN AND NORTHWEST TX...AS WELL AS SOUTHERN OK. WW ISSUANCE MAY BE REQUIRED THIS AFTERNOON. DISCUSSION...AS OF 19Z...THE SURFACE DRYLINE EXTENDS FROM NEAR AMA SOUTHWARD TO EAST OF MAF. STRONG HEATING HAS BEEN OCCURRING ACROSS THE PORTION OF WEST TX EAST OF THE DRYLINE...WHERE MLCAPE VALUES ARE CURRENTLY 2500-3000 J/KG. MID/HIGH CLOUDS ARE ALSO DIMINISHING ACROSS SOUTH-CENTRAL OK INTO NORTHWEST TX WHERE INCREASED DIURNAL HEATING HAS BEGUN. THE RESULT IS A RATHER WIDESPREAD AREA OF WEAK CAP AND STRONG INSTABILITY. 18Z SOUNDINGS SHOWED VERY STEEP MID LEVEL LAPSE RATES ARE PREVALENT THROUGHOUT THE REGION...WHICH MAY PROMOTE RAPID THUNDERSTORM INTENSIFICATION ONCE INITIATION OCCURS. EFFECTIVE SHEAR WILL BE FAVORABLE FOR ROTATING STORMS AND STRONG LOW LEVEL WINDS MAY BE SUFFICIENT FOR A FEW TORNADOES. HOWEVER...ORIENTATION OF THE UPPER LEVEL FLOW SUGGESTS THAT STORMS WILL LIKELY MERGE AND GROW UPSCALE RATHER QUICKLY TODAY...WITH LARGE HAIL AND DAMAGING WINDS BEING THE PRIMARY THREATS. ..HART/MEAD.. 05/29/2013 bchris02 05-29-2013, 02:35 PM It's looking more and more like today the metro area will be fine, but tomorrow and especially Friday could be bad. Basically a repeat of the last setup where the three days go from bad, worse, to worst. venture 05-29-2013, 02:44 PM It's looking more and more like today the metro area will be fine, but tomorrow and especially Friday could be bad. Basically a repeat of the last setup where the three days go from bad, worse, to worst. For the life of me I'm not sure where people are getting that assumption. Nothing being put out there is indicating that. ou48A 05-29-2013, 02:54 PM It's looking more and more like today the metro area will be fine, but tomorrow and especially Friday could be bad. Basically a repeat of the last setup where the three days go from bad, worse, to worst. TWC's Exclusive TOR:CON Index - weather.com (http://www.weather.com/news/tornado-torcon-index) venture 05-29-2013, 02:57 PM http://www.weatherspotlight.com/screencap/may13/29-2.png venture 05-29-2013, 03:06 PM http://www.weatherspotlight.com/screencap/may13/kfdr_20130529_195731.png bandnerd 05-29-2013, 03:06 PM For the life of me I'm not sure where people are getting that assumption. Nothing being put out there is indicating that. I can think of a place, but the censors and probably moderators wouldn't like my answer. venture 05-29-2013, 03:07 PM That is the storm SW of Altus right now. Hail core building in it. buylow 05-29-2013, 03:14 PM For the life of me I'm not sure where people are getting that assumption. Nothing being put out there is indicating that. http://investmeinmymotley.files.wordpress.com/2012/04/chickenlittle-e1322754718668.jpg soonerguru 05-29-2013, 03:26 PM It's looking more and more like today the metro area will be fine, but tomorrow and especially Friday could be bad. Basically a repeat of the last setup where the three days go from bad, worse, to worst. Respectfully, if you have substantive links to discussions suggesting this, please share them. Otherwise, this panicky prediction is not particularly helpful information. SoonerBeerMan 05-29-2013, 03:39 PM Respectfully, if you have substantive links to discussions suggesting this, please share them. Otherwise, this panicky prediction is not particularly helpful information. A-freakin-MEN venture 05-29-2013, 03:41 PM Watch incoming for OKC metro area back to the South. Until 11PM tonight... OKLAHOMA COUNTIES INCLUDED ARE ATOKA BRYAN CANADIAN CARTER CLEVELAND COAL CREEK GARFIELD GARVIN GRADY GRANT HUGHES JEFFERSON JOHNSTON KAY KINGFISHER LINCOLN LOGAN LOVE MARSHALL MCCLAIN MURRAY NOBLE OKFUSKEE OKLAHOMA OSAGE PAWNEE PAYNE PONTOTOC POTTAWATOMIE soonerguru 05-29-2013, 03:44 PM Watch incoming for OKC metro area back to the South. What kind? Tornado? ou48A 05-29-2013, 03:50 PM Nws storm prediction center norman ok 350 pm cdt wed may 29 2013 tornado watch 244 is in effect until 1100 pm cdt for the following locations okc005-013-017-019-027-029-037-047-049-051-053-063-067-069-071- 073-081-083-085-087-095-099-103-107-109-113-117-119-123-125-133- 137-300400- /o.new.kwns.to.a.0244.130529t2050z-130530t0400z/ ok . Oklahoma counties included are atoka bryan canadian carter cleveland coal creek garfield garvin grady grant hughes jefferson johnston kay kingfisher lincoln logan love marshall mcclain murray noble okfuskee oklahoma osage pawnee payne pontotoc pottawatomie seminole stephens venture 05-29-2013, 03:52 PM http://www.spc.noaa.gov/products/watch/ww0244_radar.gif URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 244 NWS STORM PREDICTION CENTER NORMAN OK 350 PM CDT WED MAY 29 2013 THE NWS STORM PREDICTION CENTER HAS ISSUED A * TORNADO WATCH FOR PORTIONS OF CENTRAL OKLAHOMA * EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 350 PM UNTIL 1100 PM CDT. * PRIMARY THREATS INCLUDE... SEVERAL TORNADOES POSSIBLE SEVERAL LARGE HAIL EVENTS WITH A FEW VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 60 STATUTE MILES EAST AND WEST OF A LINE FROM 30 MILES SOUTH SOUTHWEST OF ARDMORE OKLAHOMA TO 20 MILES NORTH NORTHWEST OF PONCA CITY OKLAHOMA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4). PRECAUTIONARY/PREPAREDNESS ACTIONS... 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 239...WW 240...WW 241...WW 242...WW 243... DISCUSSION...TSTMS ARE RAPIDLY DEVELOPING WITHIN THE WARM SECTOR ACROSS WRN OK WHERE THE CAP HAS LOCALLY ERODED. CURRENT VAD/PROFILER DATA CONTINUE TO INDICATE A VEER-BACK WIND PROFILE WHICH WILL LIKELY PROMOTE MIXED STORM MODES. WHILE DAMAGING WINDS AND LARGE HAIL WILL BE THE PRIMARY HAZARDS...A FEW TORNADOES WILL BE POSSIBLE WITH ANY BOW HEADS/SUPERCELLS GIVEN THE ANTICIPATED STRENGTHENING OF LOW-LEVEL SHEAR. AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 25030. OKCisOK4me 05-29-2013, 03:53 PM Respectfully, if you have substantive links to discussions suggesting this, please share them. Otherwise, this panicky prediction is not particularly helpful information. Like I said, he needs to step away from OKCtalk weather thread and pop a Zanex in. BChris, you're not helping people that are already panicky about situations like this by providing disinformation. venture 05-29-2013, 03:54 PM http://www.weatherspotlight.com/screencap/may13/29-5.png bandnerd 05-29-2013, 04:00 PM Well, that escalated quickly. SoonerBeerMan 05-29-2013, 04:01 PM Rick Smith @ounwcm 347pm - this is NOT the same situation as last week's OKC metro tornado watch. More linear storms. Mainly hail and wind. Moving in 5-7pm venture 05-29-2013, 04:02 PM 4pm - we will be watching for small brief circulations embedded within lines of storms, but don't expect a tornado warning for every one. by NWS Norman via twitter (http://twitter.com/NWSNorman/status/339848970098593792) 4:01 PM venture 05-29-2013, 04:11 PM This is what they are talking about on the little small circulations that need to be watched... http://www.weatherspotlight.com/screencap/may13/29-6.png Anonymous. 05-29-2013, 04:15 PM Just got home. Looks like garbage waves of storms coming up from SW OK. Could turn into something as they move into a bit warmer air in C OK. But Doesn't look like supercells are going to happen at this time. venture 05-29-2013, 04:16 PM Just got home. Looks like garbage waves of storms coming up from SW OK. Could turn into something as they move into a bit warmer air in C OK. But Doesn't look like supercells are going to happen at this time. Nope I think we are out of supercell mode and stuck with embedded brief spin ups that will have little to no advance warning. Joy oh joy. OKCisOK4me 05-29-2013, 04:17 PM I'll take the risk of an F0 anyday over and F3-5! ou48A 05-29-2013, 04:19 PM CH 4 & CH 9 said there is a chance that a storm could break off from the main line and posed a larger tornado threat? Anonymous. 05-29-2013, 04:20 PM CH 4 & CH 9 said there is a chance that a storm could break off from the main line and posed a larger tornado threat? Borderline wishcasting. But anything that does become discrete will have a greater chance to rotate. Especially if it is ahead of the main complex. zookeeper 05-29-2013, 04:23 PM We can't be too hard on BChris....there WAS a link posted earlier to TWC's TOR-CON which reads a lot like what he wrote. Maybe he saw it there? OKCisOK4me 05-29-2013, 04:38 PM We can't be too hard on BChris....there WAS a link posted earlier to TWC's TOR-CON which reads a lot like what he wrote. Maybe he saw it there? Well, he should provide a link to be a rhyme for his reason to speak like that. zookeeper 05-29-2013, 04:49 PM Well, he should provide a link to be a rhyme for his reason to speak like that. The weather.com (TWC) app is the most popular weather app for iOS and Android phones. I'm sure a lot of people see that stuff and don't even realize who's really saying what. In general though, I would agree that a source should be provided. venture 05-29-2013, 04:52 PM http://www.weatherspotlight.com/screencap/may13/29-8.png bandnerd 05-29-2013, 04:53 PM CH 4 & CH 9 said there is a chance that a storm could break off from the main line and posed a larger tornado threat? Isn't that almost always a chance, though? venture 05-29-2013, 05:19 PM http://www.weatherspotlight.com/screencap/may13/29-10.png OKCisOK4me 05-29-2013, 05:27 PM The weather.com (TWC) app is the most popular weather app for iOS and Android phones. I'm sure a lot of people see that stuff and don't even realize who's really saying what. In general though, I would agree that a source should be provided. I use WeatherBug. TWC is overrated IMO. OKCRT 05-29-2013, 05:32 PM I use WeatherBug. TWC is overrated IMO. Is there gonna be any hail in NW OKC with these storms? venture 05-29-2013, 05:32 PM Doesn't look like any significant hail. Wind is the big threat. OKCisOK4me 05-29-2013, 05:33 PM It looks like the line entering Western Oklahoma is losing its umpf. Did line #1 take the juice out of the air? OKCRT 05-29-2013, 05:36 PM No hail is a very good thing... Just a good old soaking rain to make the lakes runneth over is what we need. venture 05-29-2013, 06:59 PM http://www.spc.noaa.gov/products/md/mcd0866.gif MESOSCALE DISCUSSION 0866 NWS STORM PREDICTION CENTER NORMAN OK 0658 PM CDT WED MAY 29 2013 AREAS AFFECTED...CNTRL OK CONCERNING...TORNADO WATCH 244... VALID 292358Z - 300130Z THE SEVERE WEATHER THREAT FOR TORNADO WATCH 244 CONTINUES. SUMMARY...PRIMARY SEVERE THREAT APPEARS TO HAVE TRANSITIONED TO DAMAGING WIND AND LARGE HAIL OVER NRN HALF OF TORNADO WATCH 244...BUT ISOLATED TORNADOES REMAIN POSSIBLE THROUGH MID EVENING...ESPECIALLY OVER SCNTRL OK. DISCUSSION...EARLY THIS EVENING AN ORGANIZED LINE OF STORMS IS MOVING THROUGH CNTRL OK FROM JUST SOUTH OF BLACKWELL INTO THE OKLAHOMA CITY METRO AREA. THE MIDDLE PORTION OF THIS LINE HAS BOWED OUT AND ACCELERATED TO 50+ KT...POSING A DAMAGING WIND THREAT. OTHER MORE DISCRETE STORMS MAY DEVELOP NWD INTO SCNTRL OK THIS EVENING. THESE STORMS MAY POSE A RISK FOR ISOLATED LARGE HAIL...AND A WINDOW ALSO REMAINS FOR ISOLATED TORNADOES AS THE LLJ STRENGTHENS. THE BOWING SEGMENT MOVING INTO WCNTRL OK APPEARS TO BE WEAKENING AS IT MOVES INTO AIR THAT HAS BEEN STABILIZED BY THE LEADING LINE...BUT MAY STILL REMAIN CAPABLE OF PRODUCING DAMAGING WIND THROUGH 01Z. ..DIAL.. 05/29/2013 Plutonic Panda 05-29-2013, 07:01 PM Anyone see that awesome shelf cloud in western Oklahoma??? I just a pic of it on News9 and it was badass!!!!!!!! OKCisOK4me 05-29-2013, 07:23 PM Unless something develops around Lawton/Altus area again, it looks like we're done for the night. Time to hex the tornado watch or are we looking at redevelopment? venture 05-29-2013, 07:27 PM Unless something develops around Lawton/Altus area again, it looks like we're done for the night. Time to hex the tornado watch or are we looking at redevelopment? Tailend charlie is rotating with a wall cloud right now. So it isn't done yet. http://www.weatherspotlight.com/screencap/may13/29-13.png ou48A 05-29-2013, 07:38 PM http://www.srh.noaa.gov/images/fxc/oun/graphicast/image5.jpg venture 05-29-2013, 07:59 PM First TOR Warning... BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE NORMAN OK 754 PM CDT WED MAY 29 2013 THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A * TORNADO WARNING FOR... SOUTHEASTERN BECKHAM COUNTY IN WESTERN OKLAHOMA... SOUTHWESTERN WA****A COUNTY IN WESTERN OKLAHOMA... EXTREME NORTH CENTRAL GREER COUNTY IN SOUTHWEST OKLAHOMA... * UNTIL 830 PM CDT * AT 751 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED 5 MILES EAST OF DELHI...AND MOVING EAST AT 40 MPH. IN ADDITION TO A TORNADO...LARGE DAMAGING HAIL UP TO TWO INCHES IN DIAMETER IS EXPECTED WITH THIS STORM. * LOCATIONS IMPACTED INCLUDE... SENTINEL...CARTER...DELHI AND RETROP. bchris02 05-29-2013, 09:13 PM What do things look like for tomorrow? The NOAA website is showing the dry line further east and thus a much greater chance of tornadoes in the metro area than the TV stations did at their 6PM newscasts. Lanni 05-29-2013, 09:24 PM I'm watching the tornado program on OETA and wondering if any of those guys are Venture :) venture 05-29-2013, 09:41 PM What do things look like for tomorrow? The NOAA website is showing the dry line further east and thus a much greater chance of tornadoes in the metro area than the TV stations did at their 6PM newscasts. Things are going to be in flux until tonight's activity dies off and the boundaries setup where they will. Anonymous. 05-29-2013, 10:21 PM Severe cell moving through Clinton is backbuilding, may clip OKC. venture 05-29-2013, 10:22 PM Storm to the west is growing and the line is extending down further to the south. Damaging wind is probably main threat tonight. Low level jet (LLJ) is cranking out there pretty good. Gusts will over 40 mph right now in Norman over to Minco and south. All this will keep feeding into the storms out there. venture 05-29-2013, 10:28 PM http://www.spc.noaa.gov/products/md/mcd0872.gif MESOSCALE DISCUSSION 0872 NWS STORM PREDICTION CENTER NORMAN OK 1025 PM CDT WED MAY 29 2013 AREAS AFFECTED...CNTRL THROUGH ECNTRL OK CONCERNING...TORNADO WATCH 244... VALID 300325Z - 300430Z THE SEVERE WEATHER THREAT FOR TORNADO WATCH 244 CONTINUES. SUMMARY...TORNADO WATCH IS SCHEDULED TO EXPIRE AT 04Z. THOUGH OVERALL TORNADO THREAT HAS BECOME MARGINAL...SOME THREAT FOR ISOLATED DAMAGING WIND AND LARGE HAIL WILL PERSIST BEYOND 04Z. DEPENDING ON CONVECTIVE TRENDS...TORNADO WATCH 244 MIGHT NEED TO BE REPLACED BY A SEVERE THUNDERSTORM WATCH PRIOR TO 04Z. DISCUSSION...LATE THIS EVENING AN EXPANSIVE LINE OF STORMS EXTENDS FROM NERN OK WSWWD THROUGH NCNTRL OK THEN SWD THROUGH WCNTRL OK. A CLUSTER OF STORMS WAS ALSO MOVING NWD THROUGH SCNTRL OK. THE MOST ORGANIZED STORMS REMAIN WITH N-S ORIENTED LINE ACROSS WCNTRL OK AND SOME SWD BACKBUILDING HAS BEEN OBSERVED. THE LLJ HAS STRENGTHENED TO IN EXCESS OF 50 KT AND WILL PROVIDE MOIST UNSTABLE INFLOW TO THESE STORMS...FAVORING FORWARD PROPAGATION INTO CNTRL OK WHERE THE ATMOSPHERE REMAINS MODERATELY UNSTABLE WITH 1500 J/KG MLCAPE. GIVEN THE LINEAR MODE WITH EMBEDDED LEWP/BOW STRUCTURES...DAMAGING WIND WILL REMAIN THE DOMINANT THREAT. FARTHER SOUTH SOME ROTATION CONTINUES TO BE OBSERVED WITH CLUSTER OF STORMS MOVING NWD FROM SRN OK. THIS ACTIVITY MAY REMAIN CAPABLE OF PRODUCING ISOLATED DAMAGING WIND...LARGE HAIL AND PERHAPS A TORNADO NEXT 2-3 HOURS. ..DIAL.. 05/30/2013 ATTN...WFO...TSA...OUN... venture 05-29-2013, 10:44 PM http://www.spc.noaa.gov/products/watch/ww0249_radar.gif URGENT - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WATCH NUMBER 249 NWS STORM PREDICTION CENTER NORMAN OK 1045 PM CDT WED MAY 29 2013 THE NWS STORM PREDICTION CENTER HAS ISSUED A * SEVERE THUNDERSTORM WATCH FOR PORTIONS OF CENTRAL AND EASTERN OKLAHOMA * EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 1045 PM UNTIL 600 AM CDT. * PRIMARY THREATS INCLUDE... SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE A FEW VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE A FEW TORNADOES POSSIBLE THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 85 STATUTE MILES NORTH AND SOUTH OF A LINE FROM 35 MILES NORTH NORTHWEST OF FORT SILL OKLAHOMA TO 20 MILES EAST OF MUSKOGEE OKLAHOMA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9). PRECAUTIONARY/PREPAREDNESS ACTIONS... 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...THIS SEVERE THUNDERSTORM WATCH REPLACES TORNADO WATCH NUMBER 244. WATCH NUMBER 244 WILL NOT BE IN EFFECT AFTER 1045 PM CDT. DISCUSSION...AS ANOTHER SHORT WAVE IMPULSE TURNS EAST OF THE ROCKIES INTO THE CENTRAL HIGH PLAINS OVERNIGHT...LARGE-SCALE ASCENT ASSOCIATED WITH LOWER/MID TROPOSPHERIC WARM ADVECTION WILL MAINTAIN VIGOROUS CONVECTIVE DEVELOPMENT ACROSS PARTS OF CENTRAL INTO EASTERN OKLAHOMA. GIVEN LINGERING STEEP MID-LEVEL LAPSE RATES...AND A MOIST LOW-LEVEL ENVIRONMENT...THERMODYNAMIC PROFILES STILL APPEAR SUPPORTIVE OF A SEVERE HAIL/WIND THREAT...PERHAPS ENHANCED BY FURTHER STRENGTHENING OF THE SOUTHERLY 850 MB JET THROUGH THE 50-70 KT RANGE. THE RISK FOR AN ISOLATED TORNADO MAY NOT YET BE COMPLETELY NEGLIGIBLE. AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 24035. Tornadoes Probability of 2 or more tornadoes Low (20%) Probability of 1 or more strong (F2-F5) tornadoes Low (<2%) Wind Probability of 10 or more severe wind events Mod (30%) Probability of 1 or more wind events > 65 knots Low (10%) Hail Probability of 10 or more severe hail events Low (20%) Probability of 1 or more hailstones > 2 inches Mod (30%) Combined Severe Hail/Wind Probability of 6 or more combined severe hail/wind events Mod (60%) ou48A 05-29-2013, 11:13 PM http://www.srh.noaa.gov/images/fxc/oun/graphicast/image5.jpg venture 05-29-2013, 11:31 PM Take any forecast maps put out tonight and throw them into the garbage. On going convection is going to completely change things around until they dissipate. We have at least two boundaries floating around right now. One in SW OK and another in central OK. So everything is going to be up in the air until they settle in a certain position for tomorrow. OKCisOK4me 05-30-2013, 12:56 AM ^^your post tells me that I don't need to go back to the previous page to realize some other poster was wondering why the freak they put us in a sever t storm watch til 6am. Me thinks they're being over cautious... |