388
FNUS76 KSTO 210334
FWSSTO
SPOT FORECAST FOR COGGINS RX UNIT 2...USWFS
NATIONAL WEATHER SERVICE SACRAMENTO CA
834 PM PDT TUE OCT 20 2026
FORECAST IS BASED ON IGNITION TIME OF 1000 PDT ON OCTOBER 21.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
PARTLY TO MOSTLY CLOUDY SKIES WITH CHANCES FOR RAIN WEDNESDAY AND
THURSDAY NEAR THE BURN SITE, WITH HIGHS IN THE 50S AND 60S, AND
DAYTIME HUMIDITIES IN THE 40S WEDNESDAY AND 70S THURSDAY. FORECASTED
RAIN TOTAL OVER 48 HOURS IS 0.15 TO 0.25 INCHES OF RAIN, WITH A 40 TO
50% CHANCE OF 0.25 INCHES OR MORE BETWEEN WEDNESDAY AND THURSDAY.
WINDS GENERALLY LIGHT AND SOUTHERLY. HOWEVER, THERE IS UP TO A 10%
CHANCE FOR ISOLATED THUNDERSTORMS WITHIN 15 MILES OF THE BURN SITE,
AND STORMS THAT DO OCCUR WOULD BRING BRIEF HEAVY RAIN, SMALL HAIL,
LIGHTNING, AND GUSTY/ERRATIC WINDS. BEST CHANCES FOR TIMING OF STORMS
IS WEDNESDAY EVENING AND AGAIN THURSDAY AFTERNOON. DRIER WEATHER
EXPECTED FRIDAY ONWARDS, WITH NO CHANCES FOR PRECIPITATION OR
THUNDERSTORMS CURRENTLY IN THE FORECAST.
WEDNESDAY
SKY/WEATHER.........PARTLY TO MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS LATE IN THE AFTERNOON.
MAX TEMPERATURE.....61-67.
MIN HUMIDITY........42-46 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......EAST TO SOUTHEAST WINDS UP TO 5 MPH. GUSTY AND
ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS LATE IN
THE AFTERNOON.
RIDGETOP...........EAST TO SOUTHEAST 8 TO 13 MPH.
MIXING HEIGHT.......4800 FT AGL.
TRANSPORT WINDS.....NORTH AROUND 7 MPH SHIFTING TO THE SOUTH 8 TO 9
MPH LATE IN THE AFTERNOON.
CWR.................6 PERCENT.
CHANCE OF THUNDER...10 PERCENT.
TIME (PDT) 10 AM 2 PM
SKY COVER.......PCLDY MCLDY
CWR.............0 0
CHC OF THDR (%).0 5
TEMP............57 64
RH..............52 44
SL/VL WIND......E 3G8 SE 5G10
RIDGETOP WIND...SE 13 E 10
MIX HGT (FT)....700 4800
TRANSPORT WIND..N 7 S 9
WEDNESDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE EVENING, THEN RAIN LIKELY
OVERNIGHT.
MIN TEMPERATURE.....43-47.
MAX HUMIDITY........90-98 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTH WINDS UP TO 5 MPH. GUSTY AND ERRATIC WINDS
EXPECTED NEAR THUNDERSTORMS EARLY IN THE EVENING.
RIDGETOP...........SOUTH 6 TO 8 MPH.
MIXING HEIGHT.......400 FT AGL.
TRANSPORT WINDS.....SOUTH 6 TO 8 MPH.
CWR.................6 PERCENT INCREASING TO 34 PERCENT LATE IN THE
EVENING.
CHANCE OF THUNDER...10 PERCENT.
TIME (PDT) 6 PM 10 PM 2 AM
SKY COVER.......MCLDY MCLDY MCLDY
CWR.............10 10 30
CHC OF THDR (%).10 5 10
TEMP............59 52 51
RH..............59 68 72
SL/VL WIND......S 5G12 S 3G8 S 2G6
RIDGETOP WIND...S 8 S 6 S 3
MIX HGT (FT)....1600 400 500
TRANSPORT WIND..S 8 S 6 S 3
THURSDAY
SKY/WEATHER.........MOSTLY CLOUDY. RAIN LIKELY.
MAX TEMPERATURE.....52-57.
MIN HUMIDITY........75-80 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTH TO WEST WINDS UP TO 5 MPH.
RIDGETOP...........SOUTHWEST TO WEST AROUND 7 MPH.
MIXING HEIGHT.......2100 FT AGL.
TRANSPORT WINDS.....SOUTHWEST TO WEST AROUND 7 MPH.
CWR.................33 PERCENT DECREASING TO 1 PERCENT.
CHANCE OF THUNDER...5 PERCENT.
TIME (PDT) 6 AM 10 AM 2 PM
SKY COVER.......MCLDY MCLDY MCLDY
CWR.............30 30 20
CHC OF THDR (%).5 0 0
TEMP............48 49 55
RH..............79 87 80
SL/VL WIND......S 3G6 SW 3G7 W 3G9
RIDGETOP WIND...SW 7 W 7 W 6
MIX HGT (FT)....400 500 2100
TRANSPORT WIND..SW 7 W 7 W 6
FORECAST DAYS 3 THROUGH 7
FRIDAY
MOSTLY CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE LOWER 60S.
NORTHWEST WINDS AROUND 5 MPH.
SATURDAY
MOSTLY CLEAR. LOWS IN THE UPPER 30S TO LOW 40S. HIGHS IN THE
LOWER 60S. NORTHWEST WINDS AROUND 6 MPH.
SUNDAY
PARTLY CLOUDY. LOWS IN THE LOWER 40S. HIGHS AROUND 60. NORTHWEST
WINDS UP TO 5 MPH BECOMING SOUTHERLY IN THE AFTERNOON.
MONDAY
PARTLY CLOUDY. LOWS IN THE LOWER 40S. HIGHS IN THE UPPER 50S.
TUESDAY
PARTLY CLOUDY. LOWS IN THE LOWER 40S. HIGHS IN THE UPPER 50S.
FORECASTER...SP
REQUESTED BY...ADAM ZAHARRIS
TYPE OF REQUEST...PRESCRIBED
.TAG 2624157.0/STO
.DELDT 10/21/26
.FORMATTERVERSION 2.0.0
.EMAIL ADAM_ZAHARRIS@NPS.GOV
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