MESO: Mesoscale Discussion 1978

ACUS11 KWNS 180303
SWOMCD
SPC MCD 180303
WIZ000-MNZ000-IAZ000-SDZ000-NEZ000-180400-

MESOSCALE DISCUSSION 1978
NWS STORM PREDICTION CENTER NORMAN OK
1003 PM CDT MON SEP 17 2007

AREAS AFFECTED...SERN SD...NWRN IA...MN

CONCERNING...SEVERE THUNDERSTORM WATCH 671...

VALID 180303Z - 180400Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 671
CONTINUES.

STRONG THUNDERSTORMS WILL CONTINUE AHEAD OF COLD FRONT WITHIN
STRENGTHENING LOW LEVEL WARM ADVECTION REGIME. LATEST DIAGNOSTIC
DATA SUGGESTS LLJ IS INCREASING FROM SERN NEB INTO SRN MN WHERE FLOW
SHOULD INCREASE FROM ROUGHLY 40 KT TO NEARLY 60KT LATER TONIGHT.
NEEDLESS TO SAY...ONGOING STORMS SHOULD REMAIN ACTIVE GIVEN MOIST
PROFILES AND SUSTAINED STORM INFLOW JUST OFF THE DECOUPLED BOUNDARY
LAYER.

.DARROW.. 09/18/2007

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

ATTN...WFO...DLH...MPX...DMX...FGF...FSD...OAX...ABR...

45759625 46119517 46819468 47849439 47909310 48659307
48209180 46929180 46649230 46079233 45629287 44549281
44219358 44269436 43509425 43489489 42559493 42529659
42849764 43859759 44569712 44579646

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