Wednesday, November 14, 2007

MESO: Mesoscale Discussion 2142

ACUS11 KWNS 141700
SWOMCD
SPC MCD 141700
KYZ000-TNZ000-ILZ000-MOZ000-ARZ000-141800-

MESOSCALE DISCUSSION 2142
NWS STORM PREDICTION CENTER NORMAN OK
1100 AM CST WED NOV 14 2007

AREAS AFFECTED...FAR NERN AR/SWRN KY/PARTS OF WRN TN

CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY

VALID 141700Z - 141800Z

TSTM COVERAGE WILL CONTINUE TO INCREASE INTO THE AFTERNOON ACROSS
WRN KY/WRN TN...WITH A POTENTIAL FOR MARGINALLY SEVERE HAIL.

REGIONAL RADARS/LIGHTNING DATA INDICATED AN INCREASE IN TSTM
DEVELOPMENT ACROSS FAR WRN KY/NWRN TN SINCE 16Z...WITH COVERAGE
EXPECTED TO EXPAND AND SPREAD EWD IN RESPONSE TO LARGE SCALE ASCENT
IN ADVANCE OF THE CENTRAL PLAINS TROUGH. VIS IMAGERY SHOWED AN
EXTENSIVE AREA OF CLOUDS FROM NWRN TN INTO KY WHICH WILL LIMIT THE
LIKELIHOOD FOR SURFACE BASED TSTMS. HOWEVER...LOW LEVEL MOISTURE
RETURN WILL SUPPORT AT LEAST MARGINAL INSTABILITY...WHILE 35-40 KT
OF EFFECTIVE SHEAR SHOULD RESULT IN SOME ORGANIZED STORMS WITH HAIL
BEING THE PRIMARY THREAT GIVEN ELEVATED NATURE OF ACTIVITY.

.PETERS.. 11/14/2007

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

ATTN...WFO...LMK...OHX...PAH...MEG...

35938993 36678939 37068892 37388826 37478685 37368610
36668625 35878678 35598742 35418914 35479010 35479010
35679030

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