[MCD] SWOMCD

[MCD at goshenarc.org]

ACUS11 KWNS 241908
SWOMCD
SPC MCD 241908 
MNZ000-IAZ000-NEZ000-SDZ000-242015-

MESOSCALE DISCUSSION 0868
NWS STORM PREDICTION CENTER NORMAN OK
0208 PM CDT MON MAY 24 2004

AREAS AFFECTED...ERN SD/SWRN MN/NERN NEB/NWRN IA

CONCERNING...SEVERE THUNDERSTORM WATCH 272...

VALID 241908Z - 242015Z

CONTINUE VALID PORTIONS OF WW 272.

AS OF 19Z...REGIONAL RADAR MOSAIC INDICATED STRONGEST TSTMS OVER
PLYMOUTH...WOODBURY AND IDA COUNTIES IN NWRN IA. STORM OVER WOODBURY
COUNTY PRODUCED GOLFBALL SIZED HAIL AT 1830Z. PROXIMITY RUC FORECAST
SOUNDINGS SUGGEST THAT THESE STORMS ARE BASED AROUND 750MB WITH
MUCAPES OF 2000-2500 J/KG. FORCING FOR ASCENT AHEAD OF WEAK
SHORTWAVE TROUGH OVER NERN NEB COUPLED WITH MOIST/THERMAL ADVECTIONS
ALONG EWD DEVELOPING LLJ SHOULD SUSTAIN ONGOING TSTMS THROUGH THE
REMAINDER OF THE AFTERNOON EWD INTO S-CNTRL MN/N-CNTRL IA. GREATEST
POTENTIAL FOR LARGE HAIL APPEARS TO BE ACROSS IA PORTION OF WW 272
INTO N-CNTRL IA WHERE STRONGEST INSTABILITY IS FORECAST.

IA PORTION OF WW WILL LIKELY BE REPLACED SHORTLY BY NEW WW FARTHER
TO THE E.

..MEAD.. 05/24/2004

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

ATTN...WFO...MPX...DMX...FSD...OAX...ABR...LBF...

45369872 45379502 42199483 42219833 

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