185
FNUS76 KSTO 130251
FWSSTO
SPOT FORECAST FOR TWAIN INCIDENT...US FOREST SERVICE
NATIONAL WEATHER SERVICE SACRAMENTO CA
751 PM PDT SUN JUL 12 2026
FORECAST IS BASED ON FORECAST START TIME OF 0600 PDT ON JULY 13.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
UNSETTLED WEATHER IS EXPECTED THROUGH THE EARLY WEEK AHEAD AS
SHOWER AND THUNDERSTORM CHANCES FROM MONSOONAL MOISTURE REMAIN
POSSIBLE. HIGHEST CHANCES FOR THUNDERSTORMS ARE ANTICIPATED MONDAY
AFTERNOON (UP TO 15%) AND AGAIN TUESDAY MORNING(UP TO 20%) AND
AFTERNOON (UP TO 15%). THUNDERSTORMS ARE EXPECTED TO BE
PREDOMINANTLY WET ON MONDAY, WITH POTENTIAL FOR A WET/DRY MIX ON
TUESDAY. REGARDLESS OF WET/DRY STORM MODE, RAINFALL ACCUMULATION
IS EXPECTED TO REMAIN LIGHT. WINDS GENERALLY REMAIN LIGHT TO
BREEZY FOLLOWING DIURNAL TRENDS, ALTHOUGH GUSTY AND ERRATIC WINDS
CAN BE EXPECTED NEAR THUNDERSTORMS. OTHERWISE, WARM TEMPERATURES
PERSIST THROUGH THE WEEK WITH A TREND TOWARD DRY WEATHER, LOWERING
HUMIDITY, AND ABOVE NORMAL TEMPERATURES EXPECTED WEDNESDAY
THROUGH THE REMAINDER OF THE WEEK.
MONDAY
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
CHANCE OF RAIN IN THE MORNING, THEN SLIGHT
CHANCE OF RAIN AND THUNDERSTORMS LATE IN THE
MORNING.
MAX TEMPERATURE.....91-96.
MIN HUMIDITY........25-30 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......LIGHT WINDS BECOMING SOUTHWEST UP TO 6 MPH
IN THE AFTERNOON. GUSTY AND ERRATIC WINDS
EXPECTED NEAR THUNDERSTORMS.
RIDGETOP...........EAST AROUND 5 MPH SHIFTING TO THE SOUTHWEST
EARLY IN THE MORNING.
MIXING HEIGHT.......RISING TO AROUND 7800 FT AGL.
TRANSPORT WINDS.....EAST AROUND 5 MPH SHIFTING TO THE SOUTHWEST
EARLY IN THE MORNING.
CWR.................10 PERCENT.
CHANCE OF THUNDER...UP TO 15 PERCENT IN THE AFTERNOON.
TIME (PDT) 6 AM 9 AM NOON 3 PM
SKY COVER.......MCLDY MCLDY MCLDY PCLDY
CWR.............10 10 10 10
CHC OF THDR (%).0 0 10 15
TEMP............62 74 90 96
RH..............67 58 35 28
SL/VL WIND......N 0G2 E 1G3 SW 1G7 SW 2G10
RIDGETOP WIND...E 5 S 5 SW 8 SW 9
MIX HGT (FT)....400 1900 5700 7800
TRANSPORT WIND..E 5 S 5 SW 8 SW 9
MONDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF RAIN AND
THUNDERSTORMS OVERNIGHT.
MIN TEMPERATURE.....58-63.
MAX HUMIDITY........74-79 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTHWEST WINDS UP TO 6 MPH EARLY IN THE
EVENING BECOMING LIGHT OVERNIGHT. GUSTY AND
ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS.
RIDGETOP...........SOUTHWEST 5 TO 10 MPH SHIFTING TO THE NORTHEAST
3 TO 5 MPH OVERNIGHT.
MIXING HEIGHT.......FALLING TO AROUND 300 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH SHIFTING TO THE NORTHEAST
3 TO 5 MPH OVERNIGHT.
CWR.................10 PERCENT.
CHANCE OF THUNDER...4 PERCENT IN THE EVENING INCREASING TO 10 PERCENT
OVERNIGHT.
TIME (PDT) 6 PM 9 PM MIDNGT 3 AM
SKY COVER.......PCLDY PCLDY MCLEAR PCLDY
CWR.............4 4 5 10
CHC OF THDR (%).4 4 6 10
TEMP............88 77 69 64
RH..............36 53 67 74
SL/VL WIND......SW 2G9 N 0G5 N 0G2 N 0G2
RIDGETOP WIND...SW 10 SW 7 S 5 N 3
MIX HGT (FT)....6100 400 300 400
TRANSPORT WIND..SW 10 SW 7 S 5 N 3
TUESDAY
SKY/WEATHER.........PARTLY CLOUDY WITH A CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE MORNING AND AFTERNOON.
MAX TEMPERATURE.....93-98.
MIN HUMIDITY........25-30 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......LIGHT WINDS BECOMING SOUTHWEST UP TO 5 MPH LATE
IN THE AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED
NEAR THUNDERSTORMS.
RIDGETOP...........NORTHEAST AROUND 5 MPH SHIFTING TO THE
SOUTHWEST LATE IN THE MORNING.
MIXING HEIGHT.......RISING TO AROUND 9600 FT AGL.
TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH SHIFTING TO THE
SOUTHWEST LATE IN THE MORNING.
CWR.................10 PERCENT EARLY IN THE MORNING, DECREASING TO 4
PERCENT LATE IN THE MORNING, THEN INCREASING TO 10
PERCENT IN THE AFTERNOON.
CHANCE OF THUNDER...UP TO 20 PERCENT IN THE MORNING, DECREASING TO 2
PERCENT LATE IN THE MORNING, THEN INCREASING TO
15 PERCENT IN THE AFTERNOON.
TIME (PDT) 6 AM 9 AM NOON 3 PM
SKY COVER.......PCLDY PCLDY PCLDY PCLDY
CWR.............10 8 4 10
CHC OF THDR (%).20 12 2 15
TEMP............64 75 91 96
RH..............68 55 37 29
SL/VL WIND......N 0G2 N 0G2 N 0G5 SW 3G10
RIDGETOP WIND...NE 5 E 5 S 5 SW 8
MIX HGT (FT)....400 800 6600 9600
TRANSPORT WIND..NE 5 E 5 S 5 SW 8
FORECAST DAYS 3 THROUGH 5
WEDNESDAY
CLEAR. LOWS AROUND 60. HIGHS IN THE MID 90S. LIGHT WINDS BECOMING
SOUTHWEST UP TO 8 MPH IN THE AFTERNOON. DAYTIME MINIMUM HUMIDITY
IN THE LOWER 20S.
THURSDAY
MOSTLY CLEAR. LOWS IN THE UPPER 50S. HIGHS IN THE MID 90S. LIGHT
WINDS BECOMING SOUTHWEST UP TO 8 MPH IN THE AFTERNOON. DAYTIME
MINIMUM HUMIDITY IN THE LOWER TEENS.
FRIDAY
MOSTLY CLEAR. LOWS IN THE UPPER 50S. HIGHS IN THE MID 90S. LIGHT
WINDS BECOMING SOUTHWEST UP TO 7 MPH IN THE AFTERNOON. DAYTIME
MINIMUM HUMIDITY IN THE TEENS.
FORECASTER...NR
REQUESTED BY...E. BADALAMENTI
TYPE OF REQUEST...WILDFIRE
.TAG 2617242.1/STO
.DELDT 07/13/26
.FORMATTERVERSION 2.0.0
.EMAIL JORDAN.WADE@USDA.GOV,BRETT.LOOMIS@USDA.GOV,EDWARD.BADALAMENTI@USDA.GOV,JAMES.LICO@USDA.GOV,JOSEPH.MCGINN@USDA.GOV
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