SWOMCD
SPC MCD 252028
ILZ000-IAZ000-252130-
MESOSCALE DISCUSSION 0731
NWS STORM PREDICTION CENTER NORMAN OK
0328 PM CDT FRI APR 25 2008
AREAS AFFECTED...SERN IA...NRN IL
CONCERNING...SEVERE THUNDERSTORM WATCH 231...
VALID 252028Z - 252130Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 231
CONTINUES.
SEVERAL PRONOUNCED SUPERCELLS HAVE EVOLVED ALONG COLD FRONT ACROSS
ERN IA. SUSTAINED ROTATIONAL COMPONENT IN THE LOWEST 3KM APPEARS TO
HAVE INCREASED IN BOTH THE MUSCATINE AND LOUISA COUNTY UPDRAFTS. IF
THESE TRENDS CONTINUE...OR OTHER SUPERCELLS TAKE ON MORE TORNADIC
CHARACTERISTICS...NRN HALF OF WW231 MAY NEED TO BE UPGRADED TO A
TORNADO WATCH.
..DARROW.. 04/25/2008
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...LOT...ILX...DVN...
41159138 42399032 42298876 41348890 40679070
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