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MESOSCALE DISCUSSION 0353
NWS STORM PREDICTION CENTER NORMAN OK
0600 PM CDT TUE MAR 31 2009
AREAS AFFECTED...NERN IL AND EXTREME SERN WI
CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY
VALID 312300Z - 010000Z
NARROW LINE OF CONVECTION/TSTMS HAS DEVELOPED ALONG THE LEADING EDGE
OF A STRONG PV FILAMENT ROTATING ABOUT THE LARGE NRN PLNS CYCLONE.
THERE HAVE BEEN REPORTS OF BRIEF FUNNEL CLOUDS AND SMALL HAIL ASSOCD
WITH THE LOW-TOPPED CONVECTION. ACTIVITY WILL CONTINUE NEWD...AWAY
FROM THE UPR 40S/LWR 50S DEW POINTS AND INTO AN AIRMASS INFLUENCED
BY THE COLDER LAKE MI WATERS...NAMELY ACROSS SERN WI AND CNTRL/NRN
CHICAGOLAND. THIS WILL LIKELY RESULT IN A WEAKENING TREND.
THUS...THE SMALL HAIL/BRIEF FUNNEL CLOUD THREATS WILL ONLY LAST
UNTIL AROUND 00Z AT THE LATEST.
..RACY.. 03/31/2009
ATTN...WFO...LOT...MKX...
LAT...LON 40858821 42838878 42408810 41648766 40918765 40858821
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