[MCD] SWOMCD

[MCD at goshenarc.org]

ACUS11 KWNS 250504
SWOMCD
SPC MCD 250504 
MNZ000-IAZ000-NEZ000-SDZ000-250630-

MESOSCALE DISCUSSION 1455
NWS STORM PREDICTION CENTER NORMAN OK
1204 AM CDT SAT JUN 25 2005

AREAS AFFECTED...NRN AND CENTRAL IA/NRN AND ERN NEB/SE SD

CONCERNING...SEVERE THUNDERSTORM WATCH 521...

VALID 250504Z - 250630Z

HEAVY RAINFALL RATES OF AT LEAST 1 INCH PER HOUR EXPECTED TO
CONTINUE THE NEXT SEVERAL HOURS ACROSS NRN IA...IN AN AREA 20 MILES
EITHER SIDE OF A LINE FROM SUX TO BREMER COUNTY IA.

04Z SURFACE ANALYSIS SHOWED A COLD FRONT EXTENDING ACROSS CENTRAL IA
INTO SRN NEB.  WAA ALONG NOSE OF 35 KT SSWLY LLJ PER VWP DATA
POINTING INTO ERN NEB/WRN IA IS EXPECTED TO MAINTAIN NEW CONVECTIVE
DEVELOPMENT OVERNIGHT ACROSS NERN-ERN NEB/FAR SERN SD AND WRN IA
OVERNIGHT.  EFFECTIVE DEEP LAYER SHEAR AND INFLOW OF MODERATE
INSTABILITY SUGGESTS THREAT FOR HAIL AND STRONG WIND GUSTS WILL
PERSIST WITH THE STRONGEST ACTIVITY.  STORMS WILL CONTINUE TO TRAIN
EWD ACROSS NRN IA...WITH 1.3 TO 1.75 PW VALUES SUPPORTING AT LEAST 1
INCH PER HOUR RAINFALL RATES.

..PETERS.. 06/25/2005

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

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

41019919 42799916 43619230 41719231 

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