DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 011719
SWODY2
SPC AC 011718

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1118 AM CST SAT DEC 01 2012

VALID 021200Z - 031200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
MODELS CONTINUE TO INDICATE SOME AMPLIFICATION OF THE MID-UPPER
LEVEL PATTERN ON SUN...AS AN INTENSE VORTICITY MAXIMUM AND ATTENDANT
OPEN WAVE PROGRESS EWD WITHIN FAST FLOW - MOVING FROM THE PACIFIC
COAST OF THE NWRN U.S./BRITISH COLUMBIA TO THE NRN PLAINS AND
ADJACENT SRN CANADA BY 12Z SUN. THIS PROCESS WILL RESULT IN
DOWNSTREAM HEIGHT RISES FROM THE MID-UPPER MS VALLEY THROUGH THE
GREAT LAKES AND OH VALLEY.

...LOWER OH VALLEY...
A LINGERING POTENTIAL FOR ELEVATED TSTMS IS EXPECTED OVER THE LOWER
OH VALLEY FROM SRN IND...SRN IL INTO AND FAR WRN/NWRN KY SUN
MORNING. THIS THREAT WILL OCCUR WITHIN A WEAKENING LOW LEVEL WAA
REGIME AS A LOW AMPLITUDE MIDLEVEL TROUGH MOVES AWAY FROM THE
REGION...AND PRIOR TO GREATER HEIGHT RISES/INCREASING MIDLEVEL
TEMPERATURES EXPECTED ACROSS THIS AREA AFTER 02/18Z.

...NRN INTERMOUNTAIN WEST/GREAT BASIN TO NRN/CENTRAL ROCKIES...
PRECIPITATION WILL ACCOMPANY THE PASSAGE OF THE MID-UPPER LEVEL
TROUGH AND ATTENDANT PACIFIC COLD FRONT ACROSS THESE REGIONS DURING
DAY 2. THE LACK OF GREATER INSTABILITY SHOULD PRECLUDE ANY
APPRECIABLE LIGHTNING POTENTIAL.

..PETERS.. 12/01/2012

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