[MCD] SWOMCD

[MCD at goshenarc.org]

ACUS11 KWNS 122226
SWOMCD
SPC MCD 122225 
NEZ000-SDZ000-MTZ000-WYZ000-130030-

MESOSCALE DISCUSSION 2178
NWS STORM PREDICTION CENTER NORMAN OK
0525 PM CDT MON SEP 12 2005

AREAS AFFECTED...FAR NERN WY...WRN SD...AND FAR NWRN NEB

CONCERNING...SEVERE THUNDERSTORM POTENTIAL 

VALID 122225Z - 130030Z

LINE OF THUNDERSTORMS PRODUCING SEVERE WIND GUSTS SHOULD GRADUALLY
LESSEN IN INTENSITY DURING THE EVENING HOURS. ALTHOUGH THREAT SHOULD
DECREASE...ISOLATED AREAS OF DAMAGING WINDS REMAIN POSSIBLE ACROSS
WRN SD AND FAR NWRN NEB THROUGH 01Z. WW IS NOT PRESENTLY ANTICIPATED
FOR THIS AREA. 

FAST MOVING CONVECTIVE LINE...WITH MOTION 240/40-45KT...WILL TRACK
FROM NERN WY ACROSS WRN SD AND FAR NWRN NEB DURING THE NEXT 2-3
HOURS. CONVECTION IS BEING SUPPORTED BY A VIGOROUS UPPER TROUGH AND
ASSOCIATED DIFFERENTIAL PVA MOVING ENEWD ACROSS CENTRAL WY. DESPITE
THIS...CONVECTION IS PROCESSING BEST INSTABILITY AT THE PRESENT
TIME...WHERE SURFACE TEMPERATURES WARMED INTO THE LOW TO MID 70S
DURING THE PAST FEW HOURS. ACROSS WRN SD/NWRN NEB...COOLER BOUNDARY
LAYER AND DEWPOINTS ONLY IN THE LOW 40S SHOULD RESULT IN AN OVERALL
WEAKENING TREND OF ONGOING ACTIVITY. GREATEST SEVERE THREAT WILL BE
LOCALIZED DAMAGING WINDS GIVEN CONVECTIVE MODE AND SPEED OF
MOVEMENT. AS CONVECTION WEAKENS OVERALL...POTENTIAL FOR DOWNWARD
MOMENTUM TRANSFER SHOULD LESSEN SUGGESTING THREAT OF SEVERE WINDS
WILL GRADUALLY BECOME MORE ISOLATED DURING THE NEXT 2-3 HOURS.

..BANACOS.. 09/12/2005

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

ATTN...WFO...LBF...UNR...CYS...BYZ...

42730394 43760446 44720469 45280420 45450355 45570286
45560227 45290164 44630136 43890125 43210125 42830170
42720221 42630304 

WWWW