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MESOSCALE DISCUSSION 0410
NWS STORM PREDICTION CENTER NORMAN OK
1208 PM CDT MON APR 06 2009
AREAS AFFECTED...ERN NC/SERN VA
CONCERNING...TORNADO WATCH 122...
VALID 061708Z - 061815Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 122 CONTINUES.
TSTMS ALONG AND AHEAD OF A FAST MOVING COLD FRONT...WHICH EXTENDED
FROM SERN VA SSWWD THROUGH ERN NC TO OFF THE SC COAST...CONTINUE TO
POSE A THREAT FOR TORNADOES.
AT 17Z...A SMALL WARM SECTOR REMAINED OVER INLAND AREAS AHEAD OF THE
COLD FRONT ACROSS ERN NC AND FAR SERN VA...WHERE THE AIR MASS IS
MODERATELY UNSTABLE AND STRONGLY SHEARED /EFFECTIVE SHEAR 50-70 KT/.
55 KT SSWLY LLJ TRANSLATING EWD ACROSS FAR ERN NC IS MAINTAINING
STRONG LOW LEVEL SHEAR FOR TORNADO DEVELOPMENT /0-1 KM SHEAR 35-40
KT AND 0-1 KM SRH 300-400 M2/S2/. CURRENT RADAR TRENDS SUGGEST THE
COLD FRONT SHOULD MOVE OFFSHORE BY 19Z...THUS ENDING ANY ADDITIONAL
SEVERE THREAT BEYOND THAT TIME.
..PETERS.. 04/06/2009
ATTN...WFO...AKQ...MHX...
LAT...LON 34197720 34577751 35607681 36687675 37627648 37907630
37927491 37307534 36107525 35187496 34907519 34227636
34197720
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