[MCD] SWOMCD

Fri Aug 25 02:06:21 UTC 2006

ACUS11 KWNS 250208
SWOMCD
SPC MCD 250208 
WIZ000-IAZ000-MNZ000-SDZ000-NEZ000-250345-

MESOSCALE DISCUSSION 1876
NWS STORM PREDICTION CENTER NORMAN OK
0908 PM CDT THU AUG 24 2006

AREAS AFFECTED...SERN SD/PARTS OF NRN IA AND SRN MN

CONCERNING...TORNADO WATCH 743...744...746...

VALID 250208Z - 250345Z

SEVERE/ISOLATED TORNADO THREAT CONTINUES ACROSS DISCUSSION AREA. 
THREAT MAY SPREAD INTO N CENTRAL IA WITHIN SMALL AREA BETWEEN WW 743
AND 746...BUT NEW WW NOT ANTICIPATED.

SEVERE THREAT HAS DIMINISHED SIGNIFICANTLY ACROSS WW 744 -- I.E.
SERN ND AND NERN SD.  HOWEVER...STRONG/SEVERE STORMS PERSIST NOW
FROM SERN SD EWD ACROSS SRN MN -- AHEAD OF SURFACE LOW/INVOF
WELL-DEFINED SURFACE BOUNDARY. STRONGEST CONVECTION NOW RESIDES
OVER SERN MN...WHERE A COUPLE OF SUPERCELLS REMAIN EMBEDDED WITHIN
LARGER CONVECTIVE CLUSTER.  WITH MODERATE TO STRONG INSTABILITY
PERSISTING ACROSS SRN MN AND ADJACENT NRN IA AND AREA PROFILERS/VWPS
DEPICTING WIND FIELD FAVORABLE FOR SUPERCELL STORMS...EXPECT SEVERE
THREAT TO CONTINUE ACROSS THIS REGION. 

THOUGH STORMS MAY SPREAD EWD OUT OF WW 746 AND SWD OUT OF WW 743
INTO N CENTRAL IA...LIMITED AREAL COVERAGE OF THREAT SUGGESTS THAT
NEW WW MAY NOT BE REQUIRED.

..GOSS.. 08/25/2006

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

ATTN...WFO...ARX...MPX...DMX...FSD...OAX...

43459786 44339671 44529576 43939403 44029117 42889116
42669389 42849801 

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