SWOMCD
SPC MCD 030304
IAZ000-030430-
MESOSCALE DISCUSSION 2099
NWS STORM PREDICTION CENTER NORMAN OK
1004 PM CDT FRI SEP 02 2011
AREAS AFFECTED...IA
CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE
VALID 030304Z - 030430Z
DAMAGING WINDS AS WELL AS SEVERE HAIL WILL REMAIN A CONCERN THROUGH
LATE EVENING WITHIN A WSW-ENE CORRIDOR ACROSS IA. IF INCREASING
CONVECTIVE TRENDS CONTINUE...A WATCH COULD BE NEEDED.
SEVERAL SMALL CLUSTERS OF STORMS HAVE EVOLVED/INCREASED FROM EXTREME
EASTERN NEB INTO SOUTHWEST/CENTRAL IA THIS EVENING...WITH ONE OF
THESE CLUSTERS NEAR I-80 BETWEEN OMAHA/DES MOINES PARTICULARLY
EXHIBITING RECENT ORGANIZATION/UPSCALE GROWTH. WITH SOME ADDITIONAL
UPSCALE GROWTH POSSIBLE...THIS ACTIVITY WILL CONTINUE TO FAVOR A
WSW-ENE NEAR-EFFECTIVE FRONTAL CORRIDOR ACROSS IA...WHERE A
RELATIVELY MOIST/UNSTABLE AND STRONG SHEARED ENVIRONMENT RESIDES
EVEN IN THE PRESENCE OF SLOWLY INCREASING NEAR-SURFACE CINH.
DAMAGING WIND POTENTIAL COULD REACH THE DES MOINES VICINITY AND
OTHER CENTRAL IA AREAS BY AROUND 04Z-0430Z.
..GUYER.. 09/03/2011
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...DVN...DMX...OAX...
LAT...LON 41069529 41889526 42659310 42529115 41669157 40969442
41069529
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