Rangeland Fire Danger Forecast
Issued by NWS San Juan, PR

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FNCA62 TJSJ 050805
RFDSJU
PRZ014-052015-

FIRE DANGER STATEMENT
NATIONAL WEATHER SERVICE SAN JUAN
405 AM AST THU MAR 5 2015

...ELEVATED FIRE WEATHER CONDITIONS EXPECTED FOR PORTIONS OF THE
SOUTH COASTAL PLAINS...AND MONA ISLAND LATER THIS MORNING AND INTO
THE AFTERNOON HOURS...

STRONG MID TO UPPER LEVEL HIGH PRESSURE RIDGE BUILDING ACROSS THE
REGION WILL SUPPORT UPPER LEVEL CONVERGENCE AND RAPID DRYING OF
FUELS TODAY ESPECIALLY ACROSS THE SOUTH COASTAL PLAINS. BY LATE
MORNING INTO THE AFTERNOON HOURS...MINIMUM RELATIVE HUMIDITY VALUES
MAY FALL SIGNIFICANTLY AND REACH NEAR CRITICAL LEVELS IN SOME AREAS...
AS THE OVERALL CLOUD COVER DIMINISHES AND DRY AIR RAPIDLY MOVES
INTO THESE AREAS. THE INCREASING EAST NORTHEAST TRADE WINDS WILL
LEAD TO BREEZY CONDITIONS...WITH 20-FOOT WINDS IN EXPOSED LOCATIONS
RANGING BETWEEN 15-20 MPH WITH GUSTS TO AS MUCH AS 35 MPH. MINIMUM
RELATIVE HUMIDITIES BETWEEN 40-50 PERCENT WILL BE POSSIBLE IN THESE
AREAS AND SLIGHTLY LOWER IN AND AROUND CAMP SANTIAGO IN SALINAS WHERE
KBDI VALUES HAVE ALSO BEEN RANGING 550-599 IN RECENT DAYS.

FIRE AND EMERGENCY OFFICIALS SHOULD BE AWARE THAT WEATHER CONDITIONS
ARE BECOMING MORE AND MORE CONDUCIVE FOR THE IGNITION AND SPREAD OF
WILDFIRES OVER THE NEXT FEW DAYS.

FIRE DANGER STATEMENTS ARE ISSUED WHEN FIRE WEATHER CONDITIONS
ARE APPROACHING...BUT NOT MEETING OR EXCEEDING...RED FLAG WARNING
CRITERIA.

$$








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