SWODY1
SPC AC 241945
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0145 PM CST TUE FEB 24 2009
VALID 242000Z - 251200Z
...NO TSTM AREAS FORECAST...
...SYNOPSIS...
WITHIN THE NRN STREAM A SHORTWAVE TROUGH IS CURRENTLY MOVING EWD
ACROSS THE NRN ROCKIES AND WILL REACH THE NRN PLAINS LATER TONIGHT.
CONDITIONALLY UNSTABLE LAPSE RATES OF 7-7.5 C/KM ARE PRESENT IN
ADVANCE OF THIS TROUGH...AND VERY ISOLATED LIGHTNING STRIKES MAY
OCCUR THIS AFTERNOON/EVENING ACROSS SRN MT. OTHER CONVECTION WILL
LIKELY DEVELOP LATE TONIGHT OVER THE NRN PLAINS AS THE SHORTWAVE
TROUGH CONTINUES EAST AND LIFT INCREASES ABOVE A SWD MOVING SHALLOW
COLD FRONT WHERE STEEP LAPSE RATES WILL EXIST. A FEW LIGHTNING
STRIKES WILL BE POSSIBLE...BUT COVERAGE WILL LIKELY REMAIN AOB 10%
DUE TO LIMITED INSTABILITY.
..DIAL.. 02/24/2009
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