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Tuesday, April 30, 2013

RED FLAG WARNING SAN FRANCISCO BAY AREA - STRONG NORTH TO NORTHEAST WINDS WILL DEVELOP TONIGHT INTO WEDNESDAY.

RED FLAG WARNING
 URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 432 AM PDT TUE APR 30 2013 .

STRONG NORTH TO NORTHEAST WINDS WILL DEVELOP TONIGHT INTO WEDNESDAY. THE STRONGEST WINDS WILL BE DURING THE OVERNIGHT AND EARLY MORNING HOURS OF WEDNESDAY WHEN WIND GUSTS IN EXCESS OF 50 MPH WILL BE POSSIBLE ACROSS THE HILLS. WINDS WILL BEGIN TO DECREASE BY WEDNESDAY AFTERNOON BUT TEMPERATURES WILL REMAIN HOT WITH VERY DRY RELATIVE HUMIDITY VALUES. 

RED FLAG WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 6 PM PDT WEDNESDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR THE NORTH BAY HILLS ABOVE 1000 FEET... 

* AFFECTED AREA: FIRE ZONE 507 NORTH BAY MOUNTAINS. INCLUDES ALL LOCATIONS ABOVE 1000 FEET IN MARIN...SONOMA AND NAPA COUNTY INCLUDING MOUNT SAINT HELENA AND MOUNT TAMALPAIS. 
* TIMING: FROM 6 PM TODAY THROUGH 6 PM WEDNESDAY WITH THE PERIOD OF STRONGEST WINDS ROUGHLY FROM 1 AM WEDNESDAY TO 10 AM WEDNESDAY.
* WIND: NORTH TO NORTHEAST SUSTAINED 20 TO 35 MPH WITH FREQUENT GUSTS TO 50 MPH AND LOCAL GUSTS TO 60 MPH OVER THE HIGHER PEAKS OF NAPA COUNTY ALONG THE YOLO AND LAKE COUNTY BORDERS. 
* HUMIDITY: AFTERNOON MINIMUM 15 TO 20 PERCENT...STAYING LESS THEN 30 PERCENT OVERNIGHT. 
* IMPACTS: THE COMBINATION OF RECORD DRY FUELS...NEAR RECORD WARMTH ALONG WITH STRONG AND DRY OFFSHORE WINDS WILL INCREASE THE PROBABILITY OF NEW FIRE IGNITIONS. 
  • RESIDENTS ARE URGED TO USE EXTRA CAUTION WITH ANY OUTDOOR BURNING OR FIRES. PRECAUTIONARY/PREPAREDNESS ACTIONS... 
  • 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.

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****REMINDER**** Every fire has the ability to be catastrophic. The wildland fire management environment has profoundly changed. Growing numbers of communities, across the nation, are experiencing longer fire seasons; more frequent, bigger, and more severe, fires are a real threat. Be careful with all campfires and equipment.
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