Thursday, July 24, 2008

MESO: Mesoscale Discussion 1905

ACUS11 KWNS 250209
SWOMCD
SPC MCD 250208
NEZ000-SDZ000-MTZ000-WYZ000-250315-

MESOSCALE DISCUSSION 1905
NWS STORM PREDICTION CENTER NORMAN OK
0908 PM CDT THU JUL 24 2008

AREAS AFFECTED...SD/NEB

CONCERNING...SEVERE THUNDERSTORM WATCH 746...

VALID 250208Z - 250315Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 746
CONTINUES.

SEVERE THREAT CONTINUES ACROSS WW AND ADJACENT AREAS...WITH NEW WW
LIKELY TO BE ISSUED PRIOR TO 25/03Z -- THE SCHEDULED EXPIRATION TIME
OF WW 746.

THUNDERSTORMS CONTINUE TO EXPAND/MOVE GENERALLY ESEWD ACROSS PARTS
OF SD AND NEB...WITH A LARGE CLUSTER OF CONVECTION DEVELOPING ATTM
ACROSS SWRN SD AND THE NEB PANHANDLE JUST AHEAD OF A WEAK VORT MAX
PER LATEST WV IMAGERY. AIRMASS AHEAD OF THIS CLUSTER -- ACROSS
CENTRAL PARTS OF SD AND NEB -- REMAINS QUITE MOIST AND MODERATELY
UNSTABLE...WITH 1000 TO 2000 J/KG MIXED-LAYER CAPE INDICATED.

AS THE SLY LOW-LEVEL JET CONTINUES TO STRENGTHEN OVER THE CENTRAL
PLAINS THIS EVENING...EXPECT STORMS TO CONTINUE/INCREASE AND SPREAD
ESEWD WITH TIME. THOUGH STRONGEST MID-LEVEL FLOW REMAINS FURTHER N
-- ACROSS NRN SD AND INTO ND...AMPLE SHEAR AND OBSERVED MESOSCALE
ORGANIZATION WITH THE ONGOING CLUSTER MOVING OUT OF THE HIGH PLAINS
SUGGESTS THAT A THREAT FOR DAMAGING WINDS AND HAIL WILL CONTINUE FOR
THE NEXT SEVERAL HOURS.

..GOSS.. 07/25/2008

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

ATTN...WFO...FSD...OAX...ABR...GID...LBF...UNR...CYS...BYZ...

44690454 45030408 44770091 44429895 41349692 40049732
40429962 41160276 42870416

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