SPC AC 250024
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0624 PM CST SAT JAN 24 2009
VALID 250100Z - 251200Z
...NO TSTM AREAS FORECAST...
...WRN U.S...
SCATTERED SHOWERS...AND EVEN ONE OR TWO THUNDERSTORMS...CONTINUE
WITHIN BROADLY CONFLUENT ZONE THAT STRETCHES FROM THE SACRAMENTO
VALLEY IN CNTRL CA...ENEWD INTO WCNTRL UT. CONVECTION ACROSS CA IS
PARTLY INFLUENCED BY UPPER VORT DROPPING SEWD ALONG THE NRN CA
COAST...WHILE INTERIOR BASIN CONVECTION APPEARS TO BE DRIVEN IN PART
BY BOUNDARY LAYER HEATING AND RELATIVELY STEEP LAPSE RATES. 00Z
SOUNDINGS ACROSS THIS REGION INDICATE VERY WEAK INSTABILITY WITH
MUCAPE ON THE ORDER OF 100 J/KG OR LESS. OAK SOUNDING SUGGESTS
CONVECTION IS ALSO QUITE SHALLOW OVER THE SACRAMENTO VALLEY GIVEN
THE STRONG INVERSION NEAR 700MB. FARTHER EAST OVER THE GREAT
BASIN...SHOWERS ARE LIKELY DEEPER...BUT EQUALLY WEAK AND HARDLY
WORTHY OF ORGANIZED THUNDERSTORM THREAT THE REST OF THE PERIOD.
..DARROW.. 01/25/2009
CLICK TO GET WUUS01 PTSDY1 PRODUCT
NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 0600Z
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