SWOMCD
SPC MCD 130239
WVZ000-VAZ000-KYZ000-130545-
MESOSCALE DISCUSSION 0228
NWS STORM PREDICTION CENTER NORMAN OK
0939 PM CDT THU MAR 12 2009
AREAS AFFECTED...PORTIONS OF ERN KY...SRN WV...SWRN VA
CONCERNING...HEAVY SNOW
VALID 130239Z - 130545Z
SNOWFALL INTENSITY MAY INCREASE OVER PORTIONS OF ERN KY INTO SRN
WV/SWRN VA THROUGH 05Z...WITH RATES UP TO 1 IN/HR POSSIBLE.
00Z UPPER AIR OBSERVATIONS SHOW A 160 KT UPPER LEVEL JET EXITING
THROUGH NEW ENGLAND...WITH THE RRQ RESIDING OVER THE OH VALLEY
REGION. IN ADDITION...A SUBTLE 100 KT SPEED MAX WAS APPROACHING
KY/TN. THESE FEATURES WILL CONTINUE TO YIELD STRONG UPPER LEVEL
DIVERGENCE/LARGE SCALE ASCENT ACROSS THE DISCUSSION AREA THROUGH
06Z...RESULTING IN CONTINUED SNOWFALL. THOUGH RATES HAVE GENERALLY
BEEN LIGHT DURING THE EVENING SO FAR...CONFLUENT 850-700 MB FLOW
ACTING ON A QUASI-MERIDIONALLY ORIENTED THERMAL GRADIENT IS FAVORING
A ZONE OF MODERATE TO STRONG LOW LEVEL FRONTOGENESIS...EVIDENT BY
BANDED ECHO STRUCTURE IN RECENT RADAR REFLECTIVITY. AS A RESULT...AN
INCREASE IN SNOWFALL INTENSITY IS POSSIBLE...WITH RATES UP TO 1
IN/HR.
..GARNER.. 03/13/2009
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...RNK...RLX...MRX...JKL...ILN...LMK...
LAT...LON 36698194 36628391 36658552 36998589 37748545 37978525
38508394 38388238 37868100 37208113 36698194
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
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.
No comments:
Post a Comment