[MCD] SWOMCD

[MCD at goshenarc.org]

ACUS11 KWNS 210722
SWOMCD
SPC MCD 210722 
IAZ000-WIZ000-MNZ000-NEZ000-SDZ000-210745-

MESOSCALE DISCUSSION 0789
NWS STORM PREDICTION CENTER NORMAN OK
0222 AM CDT FRI MAY 21 2004

AREAS AFFECTED...PORTIONS OF SRN MN AND NRN IA

CONCERNING...SEVERE THUNDERSTORM WATCH 228...

VALID 210722Z - 210745Z

NEW WW/S WILL BE ISSUED WITHIN THE HOUR FOR PORTIONS OF SRN MN INTO
NERN IA.

THUNDERSTORMS HAVE QUICKLY DEVELOPED AND CONGEALED INTO TWO STORM
COMPLEXES ACROSS WW 228 OVER NERN NEB INTO NWRN IA SINCE 06Z.  THIS
ACTIVITY IS MOVING TO THE NE AT 30 KT AND WILL MOVE INTO SERN SD AND
SWRN MN BY 09Z.  MODEL GUIDANCE INDICATED INFLUX OF MOIST AIR INTO
THIS ACTIVITY VIA OBSERVED 45-60 KT SSWLY LLJ...AND DESTABILIZATION
OF THE AIR MASS WILL CONTINUE NWD INTO SERN SD/SRN MN/NRN IA DURING
THE NEXT SEVERAL HOURS.  CAPE BEARING SHEAR AND MODERATE ELEVATED
INSTABILITY WILL SUPPORT MAINLY A HAIL THREAT.

..PETERS.. 05/21/2004

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

ATTN...WFO...DVN...ARX...MPX...DMX...FSD...OAX...GID...LBF...

41709353 41679658 41599842 41699918 43059916 43399708
44689636 44609266 43709125 41799084 

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