826
FNMY50 PGUM 110554
FWFGUM
FIRE WEATHER PLANNING FORECAST FOR GUAM
NATIONAL WEATHER SERVICE TIYAN GU
354 PM CHST SUN MAY 11 2025
..RED FLAG WARNING IN EFFECT UNTIL 4 PM CHST MONDAY
DISCUSSION
0.06 INCHES OF RAIN HAS FALLEN SO FAR TODAY AT THE GUAM
INTERNATIONAL AIRPORT. THE KBDI REMAINS AT 730, WHICH IS IN THE
EXTREME CATEGORY DUE TO DAYTIME WINDS OF 15 TO 20 MPH. TERRAIN
FORCING OF WINDS AND OCCASIONAL GUSTS COULD MAKE FIRE FIGHTING
DRASTICALLY HARDER. THE FIRE DANGER IS EXPECTED TO BECOME CRITICAL
DURING THE DAYTIME HOURS, WITH AFTERNOON RELATIVE HUMIDITIES
EXPECTED TO DROP BELOW 60 PERCENT, AND ELEVATED WINDS, ESPECIALLY
IN HIGHER TERRAIN. A WETTING RAIN IS NOT EXPECTED FOR AT LEAST THE
NEXT SEVERAL DAYS, AND THE KBDI IS EXPECTED TO CONTINUE TO RISE.
GUZ001-120600-
GUAM-
354 PM CHST SUN MAY 11 2025
..RED FLAG WARNING IN EFFECT UNTIL 4 PM CHST MONDAY
TONIGHT MON MON NIGHT TUE
CLOUD COVER MCLDY PCLDY MCLDY MCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE RAIN (%) 20 10 10 10
TEMP 77 88 77 88
RH % 85 55 87 55
20FTWND-VAL/AM(MPH) E 11 G20 E 13 G23
20FTWND-RDG/PM(MPH) E 11 G19 E 13 E 12 G20 E 13 G22
MIXING HGT(FT-MSL) 215 3942 320 3782
TRANSPORT WND (MPH) SE 6 E 20 E 10 E 20
FORECAST FOR DAYS 3 THROUGH 7
TUESDAY NIGHT
MOSTLY CLOUDY WITH ISOLATED SHOWERS. LOWS IN THE
UPPER 70S. EAST WINDS 5 TO 20 MPH.
WEDNESDAY
BREEZY. PARTLY SUNNY WITH ISOLATED SHOWERS. HIGHS IN
THE UPPER 80S. EAST WINDS 10 TO 25 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS.
LOWS IN THE UPPER 70S. EAST WINDS 5 TO 20 MPH.
THURSDAY
PARTLY SUNNY. HIGHS IN THE UPPER 80S. EAST WINDS
10 TO 20 MPH.
THURSDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 70S. EAST
WINDS 5 TO 20 MPH.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 80S. EAST WINDS 10 TO
20 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 70S. EAST WINDS
10 TO 20 MPH.
SATURDAY
PARTLY SUNNY. HIGHS IN THE UPPER 80S. EAST WINDS
10 TO 20 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS.
LOWS IN THE UPPER 70S. EAST WINDS 5 TO 20 MPH.
SUNDAY
MOSTLY SUNNY. HIGHS IN THE MID 80S. EAST WINDS 10 TO
20 MPH.
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