931
FNUS76 KMTR 211924
FWSMTR
SPOT FORECAST FOR JEWEL LAKE PILE BURN...EAST BAY REGIONAL PARK DISTRICT
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
1124 AM PST WED JAN 21 2026
FORECAST IS BASED ON IGNITION TIME OF 0700 PST ON JANUARY 22.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
SHADING DUE TO MID/UPPER LEVEL CLOUDS WILL CONTINUE THROUGH
THURSDAY. AT THIS TIME, THE POTENTIAL FOR SPRINKLES/VERY LIGHT
RAIN SHOWERS REMAINS UNDER 10%, HOWEVER, GUSTY/ERRATIC OUTFLOW
WINDS TO 15 MPH CANNOT BE DISCOUNTED. AFTER ABOUT 5AM, THE RISK
FOR PRECIPITATION DIMINISHES DOWN TO NEAR ZERO. TERRAIN DRIVEN
FLOW THROUGH THE MORNING HOURS MAY PRESENT SOME VARIABLE/LESS
FAVORABLE WIND DIRECTIONS FOR BURNING. HOWEVER, MID-MORNING AND
TOWARD NOON, SOUTHWEST WINDS (SURFACE AND TRANSPORT) WILL BECOME
MORE PROBABLE. MIXING HEIGHTS ARE FORECAST TO REMAIN BELOW 1000
FEET THROUGH THE DAY, BEFORE FALLING QUICKLY AFTER SUNSET
THURSDAY.
THURSDAY
SKY/WEATHER.........PARTLY SUNNY. PATCHY FOG IN THE MORNING.
MAX TEMPERATURE.....57-61.
MIN HUMIDITY........74-78 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 5 TO 7 MPH.
CWR.................1 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MIXING HEIGHT.......800 FT AGL.
TRANSPORT WINDS.....SOUTHWEST AROUND 5 MPH.
MARINE LAYER........800FT.
THURSDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
PATCHY FOG OVERNIGHT.
MIN TEMPERATURE.....45-49.
MAX HUMIDITY........91-95 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 5 TO 7 MPH.
CWR.................1 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MIXING HEIGHT.......100 FT AGL.
TRANSPORT WINDS.....SOUTHWEST AROUND 6 MPH.
MARINE LAYER........100FT.
FRIDAY
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
PATCHY FOG IN THE MORNING.
MAX TEMPERATURE.....55-59.
MIN HUMIDITY........70-74 PERCENT.
WIND (20 FT)........SOUTHEAST WINDS 5 TO 6 MPH SHIFTING TO THE
NORTH AROUND 6 MPH IN THE AFTERNOON.
CWR.................0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MIXING HEIGHT.......1400 FT AGL.
TRANSPORT WINDS.....EAST AROUND 5 MPH.
MARINE LAYER........1400FT.
FORECASTER...L_BAIN
REQUESTED BY...COLIN GALLAGHER
TYPE OF REQUEST...PRESCRIBED
.TAG 2600802.0/MTR
.DELDT 01/21/26
.FORMATTERVERSION 2.0.0
.EMAIL CGALLAGHER@EBPARKS.ORG
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