SWOMCD
SPC MCD 240451
OKZ000-KSZ000-TXZ000-240545-
MESOSCALE DISCUSSION 0995
NWS STORM PREDICTION CENTER NORMAN OK
1151 PM CDT FRI MAY 23 2008
AREAS AFFECTED...ERN TX PANHANDLE...OK
CONCERNING...TORNADO WATCH 342...
VALID 240451Z - 240545Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 342 CONTINUES.
WW 342 MAY NEED TO BE EXTENDED IN TIME AND EXTENDED EWD...
SPATIALLY...INTO PART OF MAINLY NRN OK.
REGIONAL RADARS SHOWED A LINE OF STORMS EXTENDING FROM NWRN OK INTO
EXTREME NERN TX PANHANDLE...WITH ACTIVITY TRACKING TO THE ENE. SRN
EXTENT OF VORTICITY LOBE ATTENDANT TO SHORT WAVE TROUGH MOVING NWD
THROUGH ERN CO/KS SHOULD CONTINUE TO GLANCE NWRN/NRN OK OVERNIGHT.
ASCENT WITH THIS FEATURE COMBINED WITH WAA ALONG BROAD 40 KT SRN
PLAINS LLJ AND FRONTAL CIRCULATION ALONG COLD FRONT ARE EXPECTED TO
MAINTAIN TSTM DEVELOPMENT EWD ACROSS NRN AND POSSIBLY INTO CENTRAL
OK.
VERY STRONG INSTABILITY LOCATED ACROSS MUCH OF OK COMBINED WITH
40-60 KT OF EFFECTIVE BULK SHEAR SUGGEST ORGANIZED STORMS WILL
REMAIN LIKELY FOR THE NEXT SEVERAL HOURS. GIVEN THIS SCENARIO...
ERN PARTS OF WW 342 WILL LIKELY NEED TO BE EXTENDED IN TIME WITH A
FEW ADDITIONAL COUNTIES ADDED TO THE WATCH OVER MAINLY NRN OK.
..PETERS.. 05/24/2008
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...TSA...OUN...DDC...LUB...AMA...
34810070 36249984 36999944 36989706 36279701 35749745
35549840 34609891 34319935
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