MESO: Mesoscale Discussion 2112

ACUS11 KWNS 221115
SWOMCD
SPC MCD 221114
PAZ000-MDZ000-DCZ000-VAZ000-WVZ000-221215-

MESOSCALE DISCUSSION 2112
NWS STORM PREDICTION CENTER NORMAN OK
0514 AM CST SUN DEC 22 2013

AREAS AFFECTED...PORTIONS OF CENTRAL PA...CENTRAL MD...NRN VA

CONCERNING...SEVERE THUNDERSTORM WATCH 590...

VALID 221114Z - 221215Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 590
CONTINUES.

SUMMARY...AN ISOLATED STG/SVR WIND GUST WILL BE POSSIBLE THRU 13Z
WITH NARROW CONVECTIVE LINES MOVING RAPIDLY EWD THRU CENTRAL PA SWD
TO NRN VA.

DISCUSSION...NARROW CONVECTIVE LINES...LARGELY DEVOID OF LTG...WERE
MOVING RAPIDLY EWD THRU CENTRAL PA SWD INTO NRN VA AT 11Z. THESE
LINES WERE ALONG THE LEADING EDGE OF A SURFACE WIND SHIFT AND IN AN
ENVIRONMENT CHARACTERIZED BY VERY STRONG LOW LEVEL WIND FIELDS AND
VERY MINIMAL INSTABILITY. IT IS NOT OUT OF THE QUESTION THAT A
STG/SVR WIND GUST COULD OCCUR IN ASSOCIATION WITH HIGHER
REFLECTIVITY AREAS WITHIN THESE CONVECTIVE LINES. OVERALL
HOWEVER...THE THREAT HAS DIMINISHED SINCE 10Z AND ONLY ISOLATED
STG/SVR WIND GUSTS ARE EXPECTED THRU 13Z.

..BUNTING/CORFIDI.. 12/22/2013

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

ATTN...WFO...PHI...BGM...AKQ...CTP...LWX...RNK...PBZ...RLX...

LAT...LON 39227930 39787823 41777719 41747685 41507649 41077615
40567605 39857633 39417640 39127644 38847668 38467710
38217766 38007848 37867909 38177955 38667953 39227930

+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
To unsubscribe from WX-STORM send e-mail to LISTSERV@LISTSERV.ILLINOIS.EDU with
"unsub wx-storm" in the body of your message. For more information write cnovy@cox.net.