Mesoscale Discussion 227

Issued

Mar 3, 2012, 12:40 AM EST (05:40 UTC)

Expired

Mar 3, 2012, 2:15 AM EST

In force

95 min

Issued by

the Storm Prediction Center

The Greer radar (KGSP), 69 km from the middle of the area, began a volume at 05:43 UTC, the scan nearest the moment this went out.

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• Severe Thunderstorm Watch 67Mar 3, 4:40 AM EST

174 
ACUS11 KWNS 030540
SWOMCD
SPC MCD 030540 
NCZ000-SCZ000-GAZ000-030715-

MESOSCALE DISCUSSION 0227
NWS STORM PREDICTION CENTER NORMAN OK
1140 PM CST FRI MAR 02 2012

AREAS AFFECTED...NRN GA THROUGH WRN SC AND SWRN NC

CONCERNING...TORNADO WATCH 65...

VALID 030540Z - 030715Z

THE SEVERE WEATHER THREAT FOR TORNADO WATCH 65 CONTINUES.

THE THREAT FOR PRIMARILY DAMAGING WIND AND ISOLATED TORNADOES WILL
PERSIST THROUGH THE EARLY MORNING FROM NRN GA INTO WRN SC. A MORE
LIMITED THREAT EXISTS IN WRN NC. SEVERE THREAT MAY BEGIN TO INCREASE
EAST OF WW 65 INTO SCNTRL THROUGH ECNTRL NC AFTER 07Z.

WEDGE FRONT PERSISTS FROM E-CNTRL NC SWWD TO NEAR THE NC-SC BORDER
BEFORE CURVING BACK NORTHWARD INTO THE SRN APPALACHIANS. THE SEVERE
THREAT WILL PERSIST ALONG AND SOUTH OF THIS BOUNDARY WHERE A 60 KT
SLY LLJ HAS TRANSPORTED 60F DEWPOINTS INTO WARM SECTOR. MLCAPE HAS
DECREASED TO LESS THAN 500 J/KG DUE TO A GRADUAL STABILIZATION OF
THE BOUNDARY LAYER...BUT INFLOW PARCELS REMAIN CLOSE ENOUGH TO THE
SURFACE FOR A DAMAGING WIND AND TORNADO THREAT. HODOGRAPHS ARE VERY
LARGE OVER NRN GA AND INTO UPSTATE SC WHERE THE STRENGTHENING LLJ
INTERSECTS THE BOUNDARY. THIS ENVIRONMENT WILL CONTINUE TO POSE A
THREAT FOR DAMAGING WIND AND ISOLATED TORNADOES AS STORMS DEVELOP
EWD. SEVERE THREAT OVER WRN NC APPEARS LIMITED WHERE THE BOUNDARY
LAYER IS STABLE NORTH OF THE WEDGE FRONT. THIS FEATURE WILL PROBABLY
NOT MOVE MUCH DURING THE NEXT COUPLE HOURS.

THE SEVERE THREAT MAY BEGIN TO SPREAD EAST OF WW 65...ESPECIALLY
AFTER 07Z AND WFO GREENVILLE-SPARTANBURG CAN LOCALLY EXTEND AS
NECESSARY. HOWEVER ANOTHER WW MAY EVENTUALLY BE NEEDED LATER THIS
MORNING FARTHER EAST INTO SCNTRL NC AND CNTRL SC.

..DIAL.. 03/03/2012

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

ATTN...WFO...CAE...GSP...FFC...

LAT...LON   34368515 35218255 36058197 35868118 35298092 34268116
            33638328 33228508 34368515

Mesoscale Discussions in Georgia, 2012Mesoscale Discussions in South Carolina, 2012Mesoscale Discussions in North Carolina, 2012Every mesoscale discussion in 2012

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; radar from the NEXRAD Level II archive.