Sunday, June 15, 2008

MESO: Mesoscale Discussion 1402

ACUS11 KWNS 152257
SWOMCD
SPC MCD 152256
MIZ000-WIZ000-160100-

MESOSCALE DISCUSSION 1402
NWS STORM PREDICTION CENTER NORMAN OK
0556 PM CDT SUN JUN 15 2008

AREAS AFFECTED...N CNTRL/NE WI...PARTS OF SWRN UPR MI

CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY

VALID 152256Z - 160100Z

STRONG GUSTY WINDS MAY ACCOMPANY STORMS ACROSS NORTH CENTRAL/
NORTHEAST WISCONSIN THROUGH EARLY EVENING. THREAT MAY BE MARGINAL
ENOUGH THAT A WW MAY NOT BE REQUIRED. BUT...TRENDS WILL BE
MONITORED.

ANOTHER ZONE OF STRONGER FORCING...ACCOMPANYING A SHORT WAVE IMPULSE
DIGGING WITHIN THE BROADER SCALE UPPER TROUGH...APPEARS TO BE
CONTRIBUTING TO THE DEVELOPMENT OF A SMALL STORM CLUSTER ACROSS
NORTHWESTERN INTO NORTH CENTRAL WISCONSIN. THIS IS OCCURRING IN A
DRIER POST FRONTAL ENVIRONMENT...BUT DAYTIME HEATING HAS CONTRIBUTED
TO STEEP LAPSE RATES ACROSS MUCH OF THE UPPER GREAT LAKES
REGION...BENEATH A COLD MID-LEVEL AIR MASS ASSOCIATED WITH THE UPPER
CLOSED LOW. THOUGH WEAK CAPE WILL LIMIT THE VIGOR OF THE
UPDRAFTS...ENOUGH PRECIPITATION MAY BE GENERATED...COUPLED WITH
EVAPORATIVE COOLING...TO ENHANCE DOWNWARD TRANSFER OF MOMENTUM ALONG
A 50-70 KT 500 MB JET AXIS NOSING ACROSS REGION. AND... LOCALIZED
DAMAGING WIND GUSTS APPEAR POSSIBLE NEAR/NORTH OF WAUSAU INTO THE
GREEN BAY AREA BY THE 00-02Z TIME FRAME...BEFORE THE THREAT BEGINS
TO DIMINISH AS THE BOUNDARY LAYER BEGINS TO COOL WITH THE LOSS OF
DAYTIME HEATING.

..KERR.. 06/15/2008

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

ATTN...WFO...MQT...GRB...DLH...ARX...MPX...

46199112 46389022 46358901 45698778 44958746 44548802
44408869 44629009 45199132

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