SWODY1
SPC AC 101621
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1121 AM CDT WED OCT 10 2007
VALID 101630Z - 111200Z
..NO SVR TSTM AREAS FORECAST...
.ATLANTIC COAST TODAY...
MID/UPPER LEVEL LOW WILL MOVE SLOWLY SEWD ACROSS THE CENTRAL GREAT
LAKES BY TONIGHT...WHILE ACCOMPANYING COLD FRONT SHIFTS ESEWD ACROSS
THE MIDDLE AND SE ATLANTIC COAST. A WEAK SURFACE LOW/WAVE IS
FORECAST TO DEVELOP THIS AFTERNOON/EVENING OVER THE DELMARVA IN
ADVANCE OF THE MID LEVEL LOW...WHICH WILL THEN MOVE OFFSHORE
OVERNIGHT. APPEARS WEAK INSTABILITY WILL DEVELOP ALONG THE EAST
COAST DURING THE AFTERNOON AND MAY SUPPORT ISOLATED THUNDERSTORMS
INTO THE EVENING FROM NRN FL INTO THE MID ATLANTIC. MOIST
CONVECTION AND ISOLATED THUNDERSTORMS SHOULD ALSO PERSIST OVER THE
SRN TIP OF FL AND ADJACENT COASTAL WATERS WITHIN VERY MOIST AND
MARGINALLY UNSTABLE ENVIRONMENT.
..ROCKIES AREA TODAY INTO TONIGHT...
AN UPSTREAM SHORTWAVE TROUGH OVER NRN CA WILL EJECT NEWD TOWARD MT
AND LOSE AMPLITUDE AS IT ENCOUNTERS THE MEAN RIDGE AXIS. VERY STEEP
MID LEVEL LAPSE RATES AND ASCENT FOCUSED IMMEDIATELY DOWNSTREAM FROM
THIS WAVE MAY SUPPORT ISOLATED THUNDERSTORM DEVELOPMENT ACROSS
CENTRAL MT THIS EVENING. A SEPARATE SRN STREAM TROUGH WILL ALSO
MOVE NEWD OVER THE FOUR CORNERS AND BECOME DIFFUSE BY TONIGHT.
WIDELY SCATTERED THUNDERSTORMS ARE EXPECTED ACROSS THE SRN ROCKIES
AND ADJACENT SRN HIGH PLAINS WITHIN A LOW-MID LEVEL MOISTURE PLUME
DOWNSTREAM FROM THE FOUR CORNERS WAVE.
.EVANS/GUYER.. 10/10/2007
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