[MCD] SWOMCD

[MCD at goshenarc.org]

ACUS11 KWNS 230621
SWOMCD
SPC MCD 230621 
ILZ000-MOZ000-IAZ000-KSZ000-NEZ000-230645-

MESOSCALE DISCUSSION 0838
NWS STORM PREDICTION CENTER NORMAN OK
0121 AM CDT SUN MAY 23 2004

AREAS AFFECTED...NERN KS/NRN MO/WEST CENTRAL IL

CONCERNING...TORNADO WATCH 256...

VALID 230621Z - 230645Z

NEW WW MAY BE ISSUED FOR PORTIONS OF NRN MO INTO WEST CENTRAL IL.

DAMAGING BOW ECHO ACROSS ERN IA CONTINUES TO MOVE EWD AT 45-50 KT...
AND WILL MOVE INTO WW 257 JUST AFTER 07Z.
 
50+ KT SWLY LLJ IS EXPECTED TO DEVELOP EWD ACROSS MO THE NEXT
SEVERAL HOURS AND WILL BEGIN TO VEER TO WSWLY BY 12Z AS THE UPPER
TROUGH MOVES TOWARD WRN IA.  AS THIS OCCURS...AIR MASS ACROSS NRN MO
WILL DESTABILIZE WITH MUCAPE VALUES RANGING FROM 1500-2500 J/KG...
WITH INCREASING DEEP LAYER SHEAR FOR A CONTINUED THREAT OF ORGANIZED
SEVERE STORMS. LINE OF STORMS OVER NWRN MO/SOUTH CENTRAL IA IS
MOVING EWD AT CLOSE  TO 45 KT...WHILE STORMS CONTINUE TO MERGE WITH
THIS LINE ACROSS NWRN MO.  THIS ACTIVITY APPEARS TO BE EVOLVING INTO
ANOTHER BOW ECHO...RESULTING IN THE ISSUANCE OF A NEW WW IN THE NEXT
HOUR.  ACTIVITY FARTHER SWWD INTO CENTRAL KS HAS TENDED TO
WEAKEN...WITH THE GREATEST SEVERE THREAT EXPECTED ACROSS NRN MO/ERN
IA INTO NRN/CENTRAL IL.

..PETERS.. 05/23/2004

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

ATTN...WFO...ILX...LSX...DVN...EAX...OAX...TOP...ICT...

40409236 40278929 39329012 38759059 38819253 38599519
38369802 40029622 40439489 

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