Thursday, August 27, 2009

MESO: Mesoscale Discussion 1977

ACUS11 KWNS 280332
SWOMCD
SPC MCD 280331
INZ000-ILZ000-280500-

MESOSCALE DISCUSSION 1977
NWS STORM PREDICTION CENTER NORMAN OK
1031 PM CDT THU AUG 27 2009

AREAS AFFECTED...EAST CENTRAL IL/WEST CENTRAL INDIANA

CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY

VALID 280331Z - 280500Z

AN ISOLATED/BRIEF TORNADO CANNOT BE RULED OUT INTO THE OVERNIGHT
ACROSS PORTIONS OF EAST CENTRAL IL INTO WEST CENTRAL INDIANA. A
WATCH IS NOT ANTICIPATED. OTHERWISE...HEAVY RAINFALL WILL REMAIN THE
PRIMARY CONCERN.

SEVERAL STORMS CONTINUE TO EXHIBIT EPISODIC BOUTS OF LOW LEVEL
ROTATION ACROSS EAST CENTRAL IL IN VICINITY OF A
QUASI-STATIONARY/WARM FRONT THAT ROUGHLY PARALLELS I-74. DERIVED
WIND PROFILE DATA FROM LINCOLN WSR-88D VWP/WLC PROFILER REFLECTS
ONLY MODEST DEEP LAYER SHEAR/LOW LEVEL SRH...HOWEVER THE EXISTENCE
OF THE ROUGHLY WEST-EAST FRONT AND A VERY MOIST AIRMASS /AROUND 70F
SURFACE DEWPOINTS/ COULD BE SUFFICIENT FOR SEMI-SUSTAINED LOW LEVEL
MESOCYCLONES/PERHAPS A BRIEF TORNADO.

..GUYER.. 08/28/2009

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

ATTN...WFO...IND...LOT...ILX...

LAT...LON 40508893 40398677 39368679 39678864 40508893

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