785
FNUS76 KSTO 240316
FWSSTO
SPOT FORECAST FOR MT. HOUGH DISTRICT PILES- IRSC 103/300...US FOREST SERVICE
NATIONAL WEATHER SERVICE SACRAMENTO CA
716 PM PST FRI JAN 23 2026
FORECAST IS BASED ON IGNITION TIME OF 0700 PST ON JANUARY 24.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
MOSTLY CLEAR SKIES WITH BREEZY NORTH TO EAST WINDS CONTINUE TODAY AT THE
BURN SITE. INVERSION SHOULD FULLY BREAK THIS MORNING AS LOW PRESSURE
MOVES FURTHER INLAND IN SOCAL, HELPING RAISE MIXING HEIGHTS DURING
THE DAYTIME AND NIGHT, ALLEVIATING SOME OF THE DISPERSION CONCERNS
AS STAGNANT AIR IS FINALLY MOVED OUT OF THE REGION. EAST TRANSPORT
WINDS TO CONTINUE THROUGH SUNDAY AFTERNOON. HIGH PRESSURE IS THEN
FORECAST TO REDEVELOP OFFSHORE, WHERE A SHORT PERIOD OF STAGNANT AIR
FLOW MAY RETURN TO THE REGION MONDAY AND TUESDAY. FURTHER INTO NEXT
WEEK, A WEAK SYSTEM MAY MOVE THROUGH THE AREA AND BRING VERY LIGHT
RAIN AND HIGH ELEVATION MOUNTAIN SNOW, ALTHOUGH CONFIDENCE ON
ANY PRECIPITATION IS VERY LOW AT THIS TIME. BEST CHANCES OF ANY
PRECIPITATION WOULD BE ON WEDNESDAY AND THURSDAY.
SATURDAY
SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....43-47.
MIN HUMIDITY........35-39 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......NORTHEAST WINDS UP TO 7 MPH.
RIDGETOP...........EAST 13 TO 20 MPH.
MIXING HEIGHT.......3100 FT AGL.
TRANSPORT WINDS.....EAST 13 TO 20 MPH.
CWR.................0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
TIME (PST) 7 AM 10 AM 1 PM 4 PM
SKY COVER.......MCLEAR CLEAR CLEAR CLEAR
CWR.............0 0 0 0
CHC OF THDR (%).0 0 0 0
TEMP............25 35 42 42
RH..............72 59 40 37
SL/VL WIND......NE 5G12 E 6G14 E 7G16 NE 6G13
RIDGETOP WIND...NE 16 E 20 E 18 E 13
MIX HGT (FT)....1800 3000 3100 1800
TRANSPORT WIND..NE 16 E 20 E 18 E 13
SATURDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR.
MIN TEMPERATURE.....20-24.
MAX HUMIDITY........61-65 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......NORTHEAST WINDS UP TO 6 MPH EARLY IN THE
EVENING BECOMING LIGHT.
RIDGETOP...........EAST 8 TO 13 MPH.
MIXING HEIGHT.......1200 FT AGL.
TRANSPORT WINDS.....EAST 8 TO 13 MPH.
CWR.................0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
TIME (PST) 6 PM 9 PM MIDNGT 3 AM
SKY COVER.......CLEAR CLEAR CLEAR MCLEAR
CWR.............0 0 0 0
CHC OF THDR (%).0 0 0 0
TEMP............34 28 26 24
RH..............43 56 59 59
SL/VL WIND......NE 6G13 NE 5G9 NE 2G7 NE 2G7
RIDGETOP WIND...E 13 E 9 E 9 E 10
MIX HGT (FT)....1800 1200 1200 1200
TRANSPORT WIND..E 13 E 9 E 9 E 10
SUNDAY
SKY/WEATHER.........SUNNY THEN BECOMING PARTLY SUNNY.
MAX TEMPERATURE.....46-50.
MIN HUMIDITY........35-39 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......LIGHT WINDS.
RIDGETOP...........EAST 7 TO 8 MPH SHIFTING TO THE SOUTHWEST 5 TO
6 MPH IN THE AFTERNOON.
MIXING HEIGHT.......2600 FT AGL.
TRANSPORT WINDS.....EAST AROUND 8 MPH BECOMING 7 TO 8 MPH IN THE
MORNING, THEN SHIFTING TO THE SOUTHWEST 5 TO 6
MPH IN THE AFTERNOON.
CWR.................0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
TIME (PST) 6 AM 9 AM NOON 3 PM
SKY COVER.......MCLEAR PCLDY PCLDY MCLDY
CWR.............0 0 0 0
CHC OF THDR (%).0 0 0 0
TEMP............22 30 41 46
RH..............63 51 38 36
SL/VL WIND......NE 2G6 NE 1G5 E 1G5 S 2G6
RIDGETOP WIND...E 8 E 8 E 7 SW 6
MIX HGT (FT)....1200 1200 1500 2600
TRANSPORT WIND..E 8 E 8 E 7 SW 6
FORECASTER...JW
REQUESTED BY...EDWARD BADALAMENTI
TYPE OF REQUEST...PRESCRIBED
.TAG 2600702.3/STO
.DELDT 01/24/26
.FORMATTERVERSION 2.0.0
.EMAIL LUCAS.PASCUCCI@USDA.GOV,SAMUEL.HARWOOD@USDA.GOV,EDWARD.BADALAMENTI@USDA.GOV
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