SWOMCD
SPC MCD 050108
NCZ000-VAZ000-SCZ000-050245-
MESOSCALE DISCUSSION 0705
NWS STORM PREDICTION CENTER NORMAN OK
0808 PM CDT MON MAY 04 2009
AREAS AFFECTED...COASTAL SC...ERN NC
CONCERNING...SEVERE THUNDERSTORM WATCH 243...
VALID 050108Z - 050245Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 243
CONTINUES.
BOW ECHO OVER SERN NC WAS MOVING NEWD AT 40 KTS AND WILL PASS THE
I-40 CORRIDOR TO AREAS SOUTH OF GOLDSBORO AND KINSTON AND NEAR
JACKSONVILLE THROUGH 0130Z. STORMS APPEAR TO BE WEAKENING...BUT
DMGG WIND GUSTS MAY STILL OCCUR UNTIL COLD POOL DYNAMICS WEAKEN.
AIR MASS DOWNSTREAM...GENERALLY NE OF ROUTE 70...WAS IMPACTED BY
EARLY DAY CONVECTION AND IS LIKELY COMPARATIVELY LESS UNSTABLE.
MEANWHILE...WIDESPREAD CONVECTION CONTINUES UPSTREAM ACROSS THE SC
MIDLANDS WITH EMBEDDED BOWISH TYPE STRUCTURES. THIS ACTIVITY WAS
ASSOCIATED WITH A DEVELOPING MCV AND MAY ALSO POSE AT LEAST AN ISOLD
DMGG WIND OR BRIEF TORNADO THREAT FOR A COUPLE MORE HOURS. BUT
NOCTURNAL COOLING SHOULD MARK A WEAKENING TREND THROUGH MID-
EVENING.
FINALLY...TSTMS HAVE BEEN DEVELOPING INVOF THE CDFNT ALONG THE VA/NC
BORDER. UPDRAFTS APPEAR TO BE GETTING UNDERCUT BY THE SURGING
FRONT...BUT NOT LIKELY ELEVATED ENOUGH TO COMPLETELY RULE OUT A DMGG
WIND GUST OR BRIEF TORNADO AS THEY MOVE FROM THE I-85 CORRIDOR EWD
TOWARD EMPORIA/I-95 THROUGH MID-EVENING.
..RACY.. 05/05/2009
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...AKQ...MHX...RAH...ILM...CHS...
LAT...LON 32938002 35497828 36667822 36577644 35837572 34717713
32938002
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