[MCD] SWOMCD

Wed Jul 26 01:04:48 UTC 2006

ACUS11 KWNS 260102
SWOMCD
SPC MCD 260101 
MNZ000-SDZ000-NDZ000-260230-

MESOSCALE DISCUSSION 1627
NWS STORM PREDICTION CENTER NORMAN OK
0801 PM CDT TUE JUL 25 2006

AREAS AFFECTED...EXTREME SERN ND...NERN SD INTO W CNTRL MN

CONCERNING...SEVERE THUNDERSTORM WATCH 642...

VALID 260101Z - 260230Z

THREAT FOR ISOLATED DAMAGING WIND AND HAIL IS EXPECTED TO PERSIST
OVER WW AREA NEXT COUPLE HOURS OR SO. CLUSTER OF STORMS MOVING INTO
SERN SD IS MOVING S OF WW 642..BUT ANOTHER WW FARTHER S IS NOT
ANTICIPATED AT THIS TIME. 

STORMS CONTINUE DEVELOPING ALONG AND AHEAD OF THE FRONT FROM SERN ND
INTO PARTS OF ERN SD AND CNTRL MN. THE 00Z ABERDEEN SOUNDING SHOWED
STEEP LAPSE RATES WITH MODERATE INSTABILITY ALONG WITH 37 KT WNWLY
DEEP LAYER SHEAR SUFFICIENT FOR MID LEVEL UPDRAFT ROTATION. STORMS
MAY CONTINUE TO POSE A THREAT FOR ISOLATED DAMAGING WIND AND HAIL AS
THEY MOVE INTO THE UNSTABLE ATMOSPHERE OVER NERN SD. HOWEVER...AN
OVERALL DECREASE IS EXPECTED LATER THIS EVENING AS THE BOUNDARY
LAYER STABILIZES AND CAP STRENGTHENS. STORMS FARTHER S ACROSS E
CNTRL SD MAY CONTINUE TO POSE A SHORT TERM SEVERE THREAT.
HOWEVER...THIS ACTIVITY IS EXPECTED TO WEAKEN AS IT CONTINUES SEWD
INTO THE MORE CLOUDY...STABLE REGIME TOWARD EXTREME SERN SD.

..DIAL.. 07/26/2006

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

ATTN...WFO...MPX...FGF...FSD...ABR...BIS...

44629474 44029751 44579888 45499933 46319845 46409672
45999519 

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