MESO: Mesoscale Discussion 0668

ACUS11 KWNS 030218
SWOMCD
SPC MCD 030218
MNZ000-WIZ000-IAZ000-030245-

MESOSCALE DISCUSSION 0668
NWS STORM PREDICTION CENTER NORMAN OK
0918 PM CDT WED MAY 02 2012

AREAS AFFECTED...PARTS OF SOUTH CENTRAL AND SWRN MN

CONCERNING...SEVERE THUNDERSTORM WATCH 225...

VALID 030218Z - 030245Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 225
CONTINUES.

SUMMARY...WW 225 MAY BE CANCELLED WELL BEFORE THE SCHEDULED 04Z
EXPIRATION TIME. ADDITIONAL STORMS MAY AFFECT THE NWRN-NRN EXTENT
OF THIS WW AS ACTIVITY FROM NERN SD ADVANCES EWD. HOWEVER...THAT
POTENTIAL WOULD NOT OCCUR UNTIL AFTER 04Z.

DISCUSSION...REGIONAL RADAR TRENDS THIS EVENING INDICATED A STORM
MOVING EWD AND EXITING GOODHUE COUNTY MN INTO WW 227. THE AIR MASS
IN THE WAKE OF THIS STORM AND ADDITIONAL ACTIVITY AFFECTING SERN MN
INTO ADJACENT BUFFALO COUNTY WI HAS BEEN CONVECTIVELY
OVERTURNED/STABILIZED. IN ADDITION TO THIS LIMITING FACTOR TO
SUPPORT NEW TSTM DEVELOPMENT WWD ACROSS WW 225...LOW LEVEL
CONVERGENCE IS LACKING...LIKELY DUE TO LOW LEVEL DIFLUENT FLOW
REGIME OVER NWRN IA INTO SWRN-SOUTH CENTRAL MN PER REGIONAL VWP
DATA.

..PETERS.. 05/03/2012

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

ATTN...WFO...ARX...MPX...DMX...FSD...

LAT...LON 44209624 44549380 44559234 44279263 44119310 43489309
43509604 44209624

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