SPC AC 251708
DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1208 PM CDT SUN APR 25 2010
VALID 261200Z - 271200Z
...NO SVR TSTM AREAS FORECAST...
...MID-ATLANTIC/ERN NC...
AN UPPER-LEVEL TROUGH WILL MOVE ACROSS THE SRN APPALACHIAN MTNS
MONDAY WITH SCATTERED THUNDERSTORMS DEVELOPING DURING THE DAY ALONG
A CORRIDOR OF INSTABILITY IN ERN NC AND ERN VA. FORECAST SOUNDINGS
ACROSS THIS AREA AT 21Z MONDAY SHOW MODERATE DEEP LAYER SHEAR WITH
STEEP LOW-LEVEL LAPSE RATES AND VEERED LOW-LEVEL FLOW OF ABOUT 30
KT. THIS ENVIRONMENT SHOULD SUPPORT A MARGINAL WIND DAMAGE THREAT
MONDAY AFTERNOON. THUNDERSTORM COVERAGE SHOULD INCREASE IN COVERAGE
BY LATE AFTERNOON AS STORMS MOVE EWD OUT OF THE APPALACHIAN
FOOTHILLS INTO THE COASTAL PLAINS.
...SRN FL...
A BROAD UPPER-LEVEL TROUGH WILL BE IN PLACE MONDAY ACROSS THE ERN
SEABOARD. ON THE SRN END OF THE UPPER-LEVEL TROUGH...A LOW-LEVEL JET
IS FORECAST ACROSS THE SRN FL PENINSULA WHERE THUNDERSTORMS SHOULD
DEVELOP MONDAY MORNING. FORECAST SOUNDINGS AROUND MIDDAY IN SRN FL
SHOW MODERATE INSTABILITY...STRONG VERTICAL SHEAR AND VEERED
UNIDIRECTIONAL WIND PROFILES SUGGESTING AN ISOLATED WIND DAMAGE
THREAT COULD DEVELOP DURING THE LATE MORNING. THE STRONGER
INSTABILITY IS FORECAST TO REMAIN SOUTH OF THE FL KEYS SUGGESTING
THE SEVERE THREAT ACROSS SRN FL MAY REMAIN MARGINAL.
...ECNTRL TX...
WEST TO NORTHWEST FLOW WILL BE IN PLACE ACROSS THE SRN PLAINS MONDAY
WITH A COLD FRONT FORECAST TO MOVE SEWD ACROSS ECNTRL TX. A FEW
THUNDERSTORMS SHOULD DEVELOP ALONG THE BOUNDARY BETWEEN THE HOUSTON
AND AUSTIN AREAS BY LATE MONDAY AFTERNOON WHERE THE NAM DEVELOPS A
POCKET OF MODERATE INSTABILITY. FORECAST SOUNDINGS IN THIS AREA BY
00Z SHOW MODERATE DEEP LAYER SHEAR AND STEEP MID-LEVEL LAPSE RATES
SUGGESTING A MARGINAL HAIL THREAT COULD DEVELOP.
..BROYLES.. 04/25/2010
CLICK TO GET WUUS02 PTSDY2 PRODUCT
NOTE: THE NEXT DAY 2 OUTLOOK IS SCHEDULED BY 0600Z
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