Friday, August 14, 2009

MESO: Mesoscale Discussion 1886

ACUS11 KWNS 142310
SWOMCD
SPC MCD 142310
NDZ000-MTZ000-WYZ000-150015-

MESOSCALE DISCUSSION 1886
NWS STORM PREDICTION CENTER NORMAN OK
0610 PM CDT FRI AUG 14 2009

AREAS AFFECTED...CNTRL/ERN MT

CONCERNING...SEVERE THUNDERSTORM WATCH 702...

VALID 142310Z - 150015Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 702
CONTINUES.

AN ADDITIONAL WW IS BEING CONSIDERED THIS EVENING DOWNSTREAM OF WW
702 IN ERN MT.

RECENT RADAR/SATELLITE TRENDS HAVE DEPICTED RELATIVELY ANEMIC
CONVECTION ACROSS CNTRL MT...LIKELY OWING TO A WEAKLY UNSTABLE AIR
MASS GIVEN SURFACE TEMPERATURES GENERALLY IN THE 50S TO MIDDLE 60S.
FARTHER EAST...DESTABILIZATION HAS BEEN MORE PRONOUNCED THIS
AFTERNOON AS SURFACE TEMPERATURES HAVE REACHED INTO THE 70S TO LOWER
80S. AS CURRENT ACTIVITY CONTINUES TO EVOLVE NEWD...AND AS
LARGE-SCALE FORCED ASCENT STRENGTHENS AS NRN ID SHORT WAVE TROUGH
PIVOTS EWD...CONVECTIVE COVERAGE SHOULD INCREASE INTO ERN MT THIS
EVENING. ATTENDANT SEVERE HAIL/WIND THREATS WITH PERHAPS A BRIEF
TORNADO SHOULD LIKEWISE INCREASE GIVEN STRONGLY VEERED LOW/MID-LEVEL
FLOW /AS SAMPLED BY BILLINGS MT VAD PROFILER/ WITH EFFECTIVE SHEAR
AROUND 50 KT.

..GRAMS.. 08/14/2009

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

ATTN...WFO...BIS...UNR...BYZ...GGW...RIW...TFX...

LAT...LON 44920844 45030985 45361048 46101069 47441040 48640928
49010760 49020543 48560408 47560379 46410403 45370491
44900586 44820707 44920844

+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
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: