821
FNUS76 KSTO 182251
FWSSTO
SPOT FORECAST FOR FI-210...USFS
NATIONAL WEATHER SERVICE SACRAMENTO CA
351 PM PDT MON MAY 18 2026
FORECAST IS BASED ON IGNITION TIME OF 0800 PDT ON MAY 20.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
CONDITIONS WILL CONTINUE TO BE DRY AT THE SITE, WITH MIN RH VALUES
IN THE MID TO UPPER TEENS WEDNESDAY. WINDS WILL BE LIGHT WEDNESDAY
MORNING AND TURN TOWARD THE WEST FOR THE SLOPE/VALLEY AT 5-7MPH
BY THE AFTERNOON. AREAS NEAR THE RIDGETOP WILL SEE SUSTAINED
WINDS THROUGHOUT THE DAY AT 3-9MPH OUT OF THE WEST. LITTLE
IMPROVEMENT IN THE OVERNIGHT, WITH RH VALUES IN THE MID TO UPPER
30S. SUNNY AND DRY THURSDAY, WITH MIN RH IN THE 20S AND LIGHT
WINDS IN THE MORNING FOR THE SLOPE/VALLEY. BY THURSDAY AFTERNOON
WINDS TURN TOWARD THE WEST AT 5-7MPH. RIDGETOP WINDS WILL BE OUT
OF THE SOUTH AT 5-9MPH THROUGHOUT THE DAY. CONTINUED DRY AND WARM
CONDITIONS END OF THE WEEK AND INTO THE WEEKEND.
WEDNESDAY
SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....76-80.
MIN HUMIDITY........15-19 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......LIGHT WINDS BECOMING WEST UP TO 6 MPH LATE IN
THE AFTERNOON.
RIDGETOP...........WEST 3 TO 9 MPH.
MIXING HEIGHT.......7500 FT AGL.
TRANSPORT WINDS.....EAST AROUND 8 MPH SHIFTING TO THE SOUTHWEST 5
TO 8 MPH LATE IN THE MORNING.
CWR.................0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
TIME (PDT) 8 AM 10 AM NOON 2 PM 4 PM
SKY COVER.......MCLEAR MCLEAR MCLEAR MCLEAR MCLEAR
CWR.............0 0 0 0 0
CHC OF THDR (%).0 0 0 0 0
TEMP............64 71 76 77 78
RH..............34 24 18 15 21
SL/VL WIND......E 2 E 2 SW 3 W 6 W 6
SL/VL WIND GUST.5 5 8 14 14
RIDGETOP WIND...W 7 W 7 W 6 W 3 W 3
MIX HGT (FT)....400 400 7000 7500 7500
TRANSPORT WIND..E 8 E 8 SW 5 W 8 W 8
WEDNESDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR.
MIN TEMPERATURE.....58-62.
MAX HUMIDITY........35-39 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......WEST WINDS UP TO 5 MPH EARLY IN THE EVENING
BECOMING LIGHT.
RIDGETOP...........WEST AROUND 3 MPH SHIFTING TO THE NORTHWEST
LATE IN THE EVENING, THEN SHIFTING TO THE EAST
5 TO 6 MPH LATE IN THE EVENING SHIFTING TO THE
SOUTHEAST 6 TO 7 MPH OVERNIGHT.
MIXING HEIGHT.......300 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 3 TO 7 MPH SHIFTING TO THE NORTHEAST
7 TO 10 MPH LATE IN THE EVENING.
CWR.................0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
TIME (PDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM
SKY COVER.......MCLEAR MCLEAR MCLEAR CLEAR MCLEAR MCLEAR
CWR.............0 0 0 0 0 0
CHC OF THDR (%).0 0 0 0 0 0
TEMP............74 67 64 62 61 60
RH..............26 35 37 37 38 39
SL/VL WIND......W 5 SW 1 SW 1 E 2 NE 3 NE 3
SL/VL WIND GUST.12 3 3 5 6 6
RIDGETOP WIND...W 3 W 3 NE 5 E 6 SE 7 S 7
MIX HGT (FT)....6000 400 400 300 400 400
TRANSPORT WIND..W 7 S 3 S 3 E 7 NE 7 NE 7
THURSDAY
SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....79-83.
MIN HUMIDITY........20-25 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......LIGHT WINDS BECOMING WEST UP TO 6 MPH LATE IN
THE AFTERNOON.
RIDGETOP...........SOUTH 3 TO 7 MPH.
MIXING HEIGHT.......6800 FT AGL.
TRANSPORT WINDS.....NORTHEAST 7 TO 10 MPH SHIFTING TO THE SOUTHWEST
6 TO 8 MPH LATE IN THE MORNING.
CWR.................0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
TIME (PDT) 6 AM 9 AM NOON 3 PM
SKY COVER.......MCLEAR CLEAR MCLEAR MCLEAR
CWR.............0 0 0 0
CHC OF THDR (%).0 0 0 0
TEMP............62 71 80 81
RH..............40 35 24 20
SL/VL WIND......E 3G6 E 1G3 SW 3G8 W 6G14
RIDGETOP WIND...S 7 S 6 S 3 SW 3
MIX HGT (FT)....400 700 5800 6800
TRANSPORT WIND..NE 9 E 7 SW 6 SW 8
FORECAST DAYS 3 THROUGH 5
FRIDAY
MOSTLY CLEAR. LOWS IN THE LOWER 60S. HIGHS IN THE LOWER 80S.
LIGHT WINDS.
SATURDAY
CLEAR. LOWS AROUND 60. HIGHS IN THE UPPER 70S. LIGHT WINDS.
SUNDAY
CLEAR. LOWS IN THE UPPER 50S. HIGHS IN THE UPPER 70S. LIGHT
WINDS.
FORECASTER...JS
REQUESTED BY...KENNY REMMERT
TYPE OF REQUEST...PRESCRIBED
.TAG 2613948.0/STO
.DELDT 05/18/26
.FORMATTERVERSION 2.0.0
.EMAIL KENNETH.REMMERT@USDA.GOV
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