National Weather Service United States Department of Commerce

Wildfire Danger Continues in Southern California

High pressure building into the Western U.S. will create strong offshore winds in southern California. Temperatures in this region are unseasonably hot, and conditions are dry. The combination of these strong winds and dry conditions will bring fire danger to portions of southern California. Red Flag Warnings are in effect here. Any new fires in this region could quickly grow out of control. Read More >

Day 1 Convective Outlook issued at 1555 UTC 19 April 2008
   SPC AC 191555
   
   DAY 1 CONVECTIVE OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   1055 AM CDT SAT APR 19 2008
   
   VALID 191630Z - 201200Z
   
   ...NO SVR TSTM AREAS FORECAST...
   
   ...SOUTHEAST...
   
   COLD UPPER LOW CURRENTLY SRN IL WILL TRACK EWD ACROSS KY THIS
   FORECAST PERIOD.  DRY SLOT ROTATING EWD ACROSS TN VALLEY TO S OF LOW
    WILL AID IN STEEPENING LAPSE RATES INTO CENTRAL APPALACHIANS AND
   INLAND PORTIONS OF THE MID ATLANTIC STATES THIS AFTERNOON AND
   EVENING.
   
   BAND OF CLOUDS/SHOWERS AHEAD OF COLD FRONT NOW LOCATED FROM CENTRAL
   KY SWD INTO GA WILL SPREAD EWD...MOISTENING THE LOW LEVELS IN THEIR
   WAKE ACROSS THE CENTRAL APPALACHIANS. AIR MASS WILL THEN DESTABILIZE
   AHEAD OF UPPER LOW IN KY EWD TO APPALACHIANS DURING AFTERNOON AS
   LAPSE RATES STEEPEN IN THE DRY SLOT. WHILE MLCAPE EXPECTED TO
   GENERALLY BE AOB 500 J/KG GIVEN THE LIMITED MOISTURE...40-50KT OF
   DEEP LAYER SHEAR COUPLED WITH LOWERING FREEZING LEVELS IN ADVANCE OF
   UPPER LOW SUPPORT THUNDERSTORMS BY MID AFTERNOON.  A FEW STORMS
   EXPECTED TO REACH TO NEAR SEVERE LEVELS WITH HAIL THE PRIMARY THREAT
   GIVEN MID LEVEL LAPSE RATES IN EXCESS OF 7C/KM AND THE LOWERING
   FREEZING LEVELS.
   
   STORMS WILL LIKELY EVOLVE INTO MORE OF A LINEAR MODE BY THIS EVENING
   AS THEY SPREAD E OF THE CENTRAL APPALACHIANS WITH A LOW END WIND
   DAMAGE THREAT CONTINUING.
   
   ..HALES/HURLBUT.. 04/19/2008
   
   CLICK TO GET WUUS01 PTSDY1 PRODUCT

   NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 2000Z