Mesoscale Discussion 178

Issued

Mar 1, 2003, 4:24 PM EST (21:24 UTC)

Expired

Mar 1, 2003, 6:30 PM EST

In force

2 hr

Issued by

the Storm Prediction Center

611 
ACUS11 KWNS 012125
SWOMCD
SPC MCD 012124 
FLZ000-GAZ000-012330-

MESOSCALE DISCUSSION 0178
NWS STORM PREDICTION CENTER NORMAN OK
0324 PM CST SAT MAR 01 2003

AREAS AFFECTED...NRN FL THROUGH EXTREME SRN GA

CONCERNING...SEVERE THUNDERSTORM WATCH 26...

VALID 012124Z - 012330Z

THE THREAT FOR MAINLY LARGE HAIL EXPECTED TO CONTINUE ACROSS MUCH
OF WW 26 NEXT FEW HOURS. THE GREATEST THREAT FOR SEVERE WEATHER
THROUGH 23Z APPEARS TO BE OVER THE NRN FL PENINSULA. 



SURFACE BOUNDARY EXTENDS FROM THE WRN ATLANTIC WWD THROUGH THE
NRN FL PENINSULA INTO THE NRN GULF. ATMOSPHERE REMAINS MODERATELY
UNSTABLE S OF THIS FEATURE. A RATHER BROAD SWLY 30-40 KT JET WILL
PERSIST IN THE EXIT REGION OF AN APPROACHING MID-UPPER LEVEL
SPEED MAX. WARM ADVECTION/LIFT IN FRONTAL ZONE ASSOCIATED WITH
THE LOW LEVEL JET WILL MAINTAIN CONVECTIVE DEVELOPMENT INTO THE
EVENING. GIVEN STRENGTH OF DEEP LAYER SHEAR...ISOLATED ELEVATED
SUPERCELLS REMAIN LIKELY N OF THE FRONT. OTHER STORMS ARE
DEVELOPING ON THE SURFACE FRONT OVER NRN FL IN PROXIMITY TO THE
UNSTABLE LOW LEVEL INFLOW. THESE STORMS APPEAR SURFACE BASED AND
MAY HAVE THE GREATEST POTENTIAL FOR BECOMING ORGANIZED. ISOLATED
DAMAGING WIND AND LARGE HAIL SHOULD BE THE PRIMARY THREATS WITH
THIS ACTIVITY. 

..DIAL.. 03/01/2003

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

29798518 30738518 30948305 31168091 30228091 29288091
29068305 28848518

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The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.