SWODY3
SPC AC 140745
DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0145 AM CST SUN FEB 14 2010
VALID 161200Z - 171200Z
...SYNOPSIS AND FORECAST...
A LONG WAVE TROUGH...ANCHORED BY AN ELONGATED LOW FROM THE LOWER
GREAT LAKES INTO NEW BRUNSWICK...WILL BE MAINTAINED THROUGH THE DAY
THREE PERIOD E OF THE ROCKIES. MEANWHILE...AN UPSTREAM SHORT WAVE
TROUGH WILL MOVE THROUGH THE AMPLIFIED RIDGE AXIS IN PLACE OVER WRN
N AMERICA. THE STRONGEST FORCING FOR ASCENT ASSOCIATED WITH THIS
SHORT WAVE TROUGH IS FORECAST TO MOVE THROUGH SRN BRITISH COLUMBIA
AND THE PACIFIC NW.
THE AIR MASS OVER MUCH OF THE CONUS WILL REMAIN DRY AND STABLE OWING
TO THE PRESENCE OF A SURFACE RIDGE AXIS SITUATED OVER THE CNTRL PART
OF THE NATION. THE ONSHORE FLUX OF MIDLEVEL MOISTURE FROM THE ERN
PACIFIC MAY SUPPORT SOME CONVECTIVE DEVELOPMENT OVER THE PACIFIC NW
INTO NRN CA ALONG A COLD FRONT ASSOCIATED WITH ABOVE-MENTIONED SHORT
WAVE TROUGH. SPORADIC LIGHTNING MAY ACCOMPANY THE DEEPER CONVECTIVE
UPDRAFTS...BUT NO SEVERE WEATHER IS EXPECTED.
..MEAD.. 02/14/2010
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