A LOW PRESSURE SYSTEM WILL MOVE OVER CENTRAL CALIFORNIA TODAY AND LINGER THROUGH THE WEEKEND. AS A RESULT...THE THREAT OF THUNDERSTORMS WILL INCREASE TODAY WITH THE POTENTIAL FOR DRY LIGHTNING. MOST STORM DEVELOPMENT IS EXPECTED OVER THE SIERRA NEVADA BUT EASTERLY FLOW ALOFT MAY PUSH SOME STORMS INTO THE FOOTHILLS OR CENTRAL VALLEY. STORMS ARE EXPECTED TO BECOME WETTER THROUGH THE WEEKEND...HOWEVER LIGHTNING STRIKES ARE ALWAYS POSSIBLE AWAY FROM RAIN CORES. IN ADDITION...GUSTY NORTH TO EAST WIND WILL DEVELOP THIS MORNING OVER PORTIONS OF NORTHERN INTERIOR CALIFORNIA AND CONTINUE INTO SATURDAY. THESE WINDS COMBINED WITH VERY LOW HUMIDITIES WILL INCREASE THE FIRE DANGER. THE WIND IS EXPECTED TO DIMINISH SATURDAY AFTERNOON INTO EVENING. * AFFECTED AREA: FIRE ZONES 213...215...216... 263...266...AND 279. THESE INCLUDE THE NORTHERN AND CENTRAL SACRAMENTO VALLEY... THE NORTHEAST SACRAMENTO VALLEY FOOTHILLS...NORTHERN SHASTA COUNTY...AND THE MENDOCINO MOUNTAINS FROM SOUTHWEST SHASTA COUNTY TO NORTHERN LAKE COUNTY. * WIND: NORTH WIND 10 TO 20 MPH WITH LOCAL GUSTS TO 30 MPH WILL DEVELOP ALONG THE NORTHERN AND WESTERN SACRAMENTO VALLEY AND ALONG THE MENDOCINO MOUNTAINS THIS MORNING AND CONTINUE THROUGH SATURDAY. ALONG THE SIERRA NEVADA FOOTHILLS...NORTHEAST WINDS 10 TO 20 MPH ARE POSSIBLE WITH LOCAL GUSTS 30 T0 40 MPH THROUGH FAVORABLE ORIENTED CANYONS. * HUMIDITY: AFTERNOON RELATIVE HUMIDITY WILL BE IN THE SINGLE DIGITS TO LOWER TEENS. OVERNIGHT HUMIDITY RECOVERY PERCENT WILL ONLY BE IN 20S TO 30S. * IMPACTS: VERY DRY FUELS...GUSTY NORTH TO NORTHEAST WINDS AND VERY DRY CONDITIONS WITH POOR OVERNIGHT HUMIDITY WILL CREATE POTENTIALLY DANGEROUS FIRE WEATHER CONDITIONS TODAY THROUGH LATE SATURDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... &&
Instruction:
A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS... LOW RELATIVE HUMIDITY... AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL.
Area: EASTERN PORTION OF SHASTA/TRINITY NF-NORTHERN SACRAMENTO VALLEY TO SOUTHERN TEHAMA COUNTY LINE BELOW1000 FT-CENTRAL SACRAMENTO VALLEY IN GLENN, COLUSA, YUBA, NORTHERNSUTTER, AND BUTTE COUNTY BELOW 1000 FT-SOUTHEAST EDGE SHASTA-TRINITY NF AND WESTERN PORTIONS OF TEHAMA-GLENN UNIT-NORTHERN SIERRA FOOTHILLS FROM 1000 TO 3000 FT. INCLUDES PORTIONSOF SHASTA-TRINITY AND BUTTE UNITS-EASTERN MENDOCINO NF-
Affected Counties or parts of: Yuba, Plumas, Yolo, El Dorado, Amador, Calaveras, San Joaquin, Sierra, Alpine, Shasta, Tuolumne, Stanislaus, Sacramento, Placer, Solano, Butte, Colusa, Glenn, Sutter, Lake, Tehama, Nevada
Sent: 2011-09-09T05:14:40-07:00
Original Sender: KSTO@nwws.oes.ca.gov
From: NATIONAL WEATHER SERVICE SACRAMENTO CA
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