SWODY1
SPC AC 200037
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0737 PM CDT MON OCT 19 2009
VALID 200100Z - 201200Z
...NO SVR TSTM AREAS FORECAST...
...NRN/CNTRL HIGH PLAINS...
CLUSTER OF ELEVATED STORMS ASSOCIATED WITH LEAD SHORT WAVE TROUGH
OVER WRN PARTS OF SD/NEB SHOULD TEND TO DISSIPATE WITH TIME AS
STRONGER FORCING SPREADS EWD AND ACTS ON AN INCREASINGLY STABLE
ENVIRONMENT. ADDITIONAL ELEVATED STORMS MAY REDEVELOP LATER TONIGHT
IN SAME GENERAL VICINITY AS LOW-LEVEL WAA INCREASES TO THE N OF
SURFACE CYCLONE AND ATTENDANT SURFACE BOUNDARY WHICH WILL RESIDE
FROM CNTRL/ERN WY INTO NRN KS/SRN NEB.
...NRN GREAT BASIN...
DEEP ASCENT IN LEFT EXIT REGION OF CYCLONIC UPPER JET STREAK SHOULD
SUSTAIN ISOLATED/SCATTERED TSTMS INTO TONIGHT GIVEN STEEP LAPSE RATE
ENVIRONMENT OBSERVED BY 00Z REGIONAL SOUNDINGS.
...SRN ROCKIES INTO FAR WRN TX...
TSTMS ARE IN PROGRESS THIS EVENING OVER FAR NRN MEXICO WITHIN
MIDLEVEL MOIST PLUME TRAILING LEAD SHORT WAVE TROUGH MOVING THROUGH
THE NRN/CNTRL HIGH PLAINS. 00Z ELP SOUNDING INDICATES THAT AMBIENT
LAPSE RATES REMAIN RATHER STEEP...RESULTING IN A SMALL AMOUNT OF
CONVECTIVE INSTABILITY. WHILE THE MAJORITY OF ACTIVITY WILL LIKELY
REMAIN TO THE S OF THE INTERNATIONAL BORDER...SOME POTENTIAL WILL
EXIST FOR ISOLATED STORMS DEVELOPING OVER SERN AZ/SRN NM/FAR WRN TX
TONIGHT.
..MEAD.. 10/20/2009
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