SWOMCD
SPC MCD 062155
ILZ000-WIZ000-IAZ000-MNZ000-062300-
MESOSCALE DISCUSSION 0272
NWS STORM PREDICTION CENTER NORMAN OK
0455 PM CDT TUE APR 06 2010
AREAS AFFECTED...NERN IA...SRN WI...FAR NRN IL
CONCERNING...TORNADO WATCH 57...
VALID 062155Z - 062300Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 57 CONTINUES.
A SEVERE TSTM WATCH WILL LIKELY BE ISSUED SHORTLY FOR AREAS N/NE OF
WW 57.
AS OF 2150Z...A PAIR OF SUPERCELLS WERE LOCATED FROM GRUNDY TO
BUCHANAN COUNTIES IN IA ALONG THE NRN TIER OF WW 57. SUBJECTIVE
SURFACE ANALYSIS PLACED TRIPLE POINT CYCLONE NEAR DSM...WITH
WEST-EAST ORIENTED WARM FRONT EXTENDING TO ALONG THE IL/WI BORDER.
CONVERGENCE AND LOW-LEVEL WARM THETA-E ADVECTION WITHIN THE FRONTAL
ZONE SHOULD SUPPORT ADDITIONAL TSTM DEVELOPMENT AND/OR PROPAGATION
E/NEWD OUTSIDE OF WW 57 IN NERN IA AND SRN WI. ELEVATED SUPERCELLS
WITH SEVERE HAIL WILL BE THE PRIMARY THREAT...BUT AREAS ALONG THE
IMMEDIATE WARM FRONT WILL BE MONITORED FOR A POSSIBLE TORNADO WATCH
LATER THIS EVENING.
..GRAMS.. 04/06/2010
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...LOT...MKX...DVN...ARX...DMX...
LAT...LON 42609287 43149249 43599127 43638934 43488795 42868774
42378786 42278928 42159102 41969221 41999278 42609287
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