SPC MD 1276

MD 1276 CONCERNING SEVERE THUNDERSTORM WATCH 378…379… FOR PORTIONS OF SOUTHERN/EASTERN KS AND NORTHERN OK/EASTERN TX PANHANDLE


MESOSCALE DISCUSSION 1276
NWS STORM PREDICTION CENTER NORMAN OK
0654 PM CDT THU JUN 27 2013

AREAS AFFECTED...PORTIONS OF SOUTHERN/EASTERN KS AND NORTHERN
OK/EASTERN TX PANHANDLE

CONCERNING...SEVERE THUNDERSTORM WATCH 378...379...

VALID 272354Z - 280130Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH
378...379...CONTINUES.

SUMMARY...ASIDE FROM BOUTS OF SEVERE HAIL...DAMAGING WINDS ARE A
DISTINCT CONCERN THROUGH EARLY/MID EVENING ACROSS SOUTH-CENTRAL
KS/EASTERN TX PANHANDLE AND MUCH OF NORTHERN OK. SEVERE TSTM WATCHES
378 AND 379 CONTINUE UNTIL 03Z...AND A NEW SEVERE TSTM WATCH IS
LIKELY ACROSS ADDITIONAL PORTIONS OF NORTHEAST OK /PROBABLE BEFORE
01Z/.

DISCUSSION...A 180-MILE NORTHEAST-SOUTHWEST EXTENSIVE MCS CONTINUES
TO GRADUALLY ORGANIZE/ACCELERATE SOUTHEASTWARD ACROSS SOUTH-CENTRAL
KS AND SOUTHWEST KS/NORTHWEST OK BORDER VICINITY AS OF 2340Z...WITH
A CURRENT FORWARD MOTION NOW AS HIGH AS 35-40 KT. A 51 KT WIND GUST
WAS RECENTLY MEASURED AT HUTCHINSON KS...WITH A 55 KT GUST AT
BUFFALO OK. AHEAD OF THIS MCS...LOW-LEVEL MASS RESPONSE APPEARS TO
BE OCCURRING ACROSS NORTHERN OK/FAR SOUTH-CENTRAL KS OVER THE PAST
1-2 HR PER SURFACE DATA TRENDS AND WSR-88D VWP DATA FROM
WICHITA...WITH INCREASING SOUTHEASTERLY LOW-LEVEL WINDS BOOSTING
STORM-RELATIVE LOW-LEVEL INFLOW COINCIDENT WITH A HOT/MOIST BOUNDARY
LAYER. THE AIRMASS AHEAD OF THE MCS IS QUITE UNSTABLE ESPECIALLY
ACROSS FAR SOUTH-CENTRAL/SOUTHEAST KS AND THE EASTERN HALF OF
OK...WHERE MLCAPE LIKELY EXCEEDS 4000 J/KG. COLD POOL EXPANSION
ASIDE...THIS SCENARIO WILL LIKELY LEAD TO ADDITIONAL
PROPAGATION/SOUTHEASTWARD FORWARD ACCELERATION THROUGH EARLY/MID
EVENING ESPECIALLY ACROSS FAR SOUTH-CENTRAL KS/PERHAPS SOUTHEAST KS
AND MUCH OF NORTHERN OK INCLUDING THE I-35 CORRIDOR. DAMAGING WINDS
WILL BE A DISTINCT POSSIBILITY.

..GUYER.. 06/27/2013

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...SGF...EAX...TSA...TOP...ICT...OUN...DDC...AMA...

LAT...LON   37010098 37329917 38249792 39609694 39679573 37979491
            36399458 35789626 35599839 36020088 37010098

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