SPC AC 181941
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0141 PM CST SUN FEB 18 2007
VALID 182000Z - 191200Z
...NO SVR TSTM AREAS FORECAST...
...SYNOPSIS...
UPPER TROUGH WILL CONTINUE SHIFTING ACROSS THE
MID-ATLANTIC/NORTHEAST AND INTO THE WRN ATLANTIC THROUGH THE END OF
THE PERIOD...ACCOMPANIED BY CONVECTIVE SHOWERS AND
SCATTERED/OFFSHORE THUNDERSTORMS. MEANWHILE...A SECOND UPPER TROUGH
WILL CONTINUE MOVING ONSHORE INTO THE WRN CONUS -- ALSO ACCOMPANIED
BY SHOWERS AND THE POTENTIAL FOR A FEW EMBEDDED THUNDERSTORMS.
ELSEWHERE...DRY/STABLE LOW-LEVEL AIRMASS WILL PRECLUDE THUNDERSTORM
DEVELOPMENT THROUGH THE PERIOD.
...PARTS OF NRN CA INTO NRN NV...
WEAK DESTABILIZATION IS OCCURRING ACROSS NRN NV AND ADJACENT PARTS
OF NRN CA/THE NRN SIERRA...AHEAD OF TROUGH APPROACHING FROM THE ERN
PACIFIC. SHOWERS WILL CONTINUE ACROSS THIS REGION AS TROUGH SHIFTS
SEWD THROUGH THE END OF THE PERIOD...ALONG WITH THE POTENTIAL FOR A
FEW ISOLATED/EMBEDDED LIGHTNING STRIKES.
..GOSS.. 02/18/2007
CLICK TO GET WUUS01 PTSDY1 PRODUCT
NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 0100Z
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