SWODY2
SPC AC 271703
DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1203 PM CDT SUN JUN 27 2010
VALID 281200Z - 291200Z
...THERE IS A SLGT RISK OF SVR TSTMS ACROSS PARTS OF NEW
ENGLAND...THE MID-ATLANTIC AND CNTRL APPALACHIAN MTNS...
...NEW ENGLAND/MID-ATLANTIC/CNTRL APPALACHIAN MTNS...
AN UPPER-LEVEL TROUGH IS FORECAST TO MOVE ACROSS THE LOWER GREAT
LAKES MONDAY AS A COLD FRONT MOVES SEWD INTO THE NRN AND CNTRL
APPALACHIAN MTNS. SEVERAL CLUSTERS OF THUNDERSTORMS SHOULD BE
ONGOING ALONG THE FRONT MONDAY MORNING WITH CONVECTIVE COVERAGE
INCREASING AROUND MIDDAY AS SFC TEMPS WARM. ALONG AND SOUTH OF THE
FRONT...THE MODELS DEVELOP MODERATE INSTABILITY AND MAINTAIN 20 TO
30 KT OF LOW-LEVEL FLOW. THIS COMBINATION SHOULD BE FAVORABLE FOR
MULTICELL STORMS WITH WIND DAMAGE POTENTIAL AS LOW-LEVEL LAPSE RATES
BECOME STEEP DURING THE EARLY TO MID AFTERNOON. A FEW SUPERCELLS
WITH LARGE HAIL POTENTIAL WILL BE POSSIBLE ACROSS THE MID-ATLANTIC
AND SRN NEW ENGLAND WHERE FORECAST SOUNDINGS SHOW 30 TO 40 KT OF
DEEP LAYER SHEAR. ANY SUPERCELL THREAT IN THE NERN STATES SHOULD BE
CONFINED TO AREAS THAT DESTABILIZE THE MOST.
...SRN PLAINS/OZARKS/TN VALLEY...
A COLD FRONT IS FORECAST TO MOVE SSEWD ACROSS THE SRN
PLAINS...OZARKS AND TN VALLEY MONDAY. ISOLATED THUNDERSTORM ACTIVITY
SHOULD BE ONGOING ALONG THE FRONT MONDAY MORNING WITH CONVECTIVE
COVERAGE INCREASING BY EARLY AFTERNOON AS MODERATE INSTABILITY
DEVELOPS ALONG AND AHEAD OF THE FRONT. ALTHOUGH A FEW MARGINALLY
SEVERE WIND GUSTS WILL BE POSSIBLE WITH THE STRONGER MULTICELL AND
PULSE CONVECTION...LOW-LEVEL FLOW IS NOT FORECAST TO BE THAT STRONG
SUGGESTING ANY THREAT SHOULD REMAIN ISOLATED.
..BROYLES.. 06/27/2010
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