271
FNUS76 KSTO 200133
FWSSTO
SPOT FORECAST FOR BROOK...CAL FIRE
NATIONAL WEATHER SERVICE SACRAMENTO CA
633 PM PDT SUN JUL 19 2026
FORECAST IS BASED ON FORECAST START TIME OF 1905 PDT ON JULY 19.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
NON-ZERO CHANCES (5-15%) IN ISOLATED SHOWERS AND THUNDERSTORMS
THIS EVENING INTO MONDAY EARLY AFTERNOON WITH BEST CHANCES FOR
OCCURRENCE THIS EVENING INTO EARLY MONDAY MORNING AND AGAIN MONDAY
AFTERNOON. CURRENT FORECASTS INDICATE A LACK OF ENERGY FOR
THUNDERSTORMS BUT THE LOW CONFIDENCE NATURE OF MONSOONAL MOISTURE
FORECASTING CAN'T RULE OUT ANY THUNDERSTORM/SHOWER DEVELOPMENT.
AFTER TUESDAY, BETTER THUNDERSTORM CHANCES SHIFT TO THE SIERRA AND
DRIER CONDITIONS DEVELOP.
OVERNIGHT HUMIDITY VALUES WILL BE IN THE LOW 40S, LOWERING INTO
THE LOW 20S DURING THE AFTERNOON/EVENING. HUMIDITY VALUES TREND
SLIGHTLY HIGHER INTO THE UPPER TEENS TO MID 20S THROUGH MIDWEEK,
WITH IMPROVING OVERNIGHT RECOVERIES. WINDS WILL REMAIN IN A
DIURNAL PATTERN WITH SOUTH WINDS GENERALLY 10 MPH OR LESS IN THE
AFTERNOON THROUGH TUESDAY. BREEZIER AFTERNOON SOUTH WINDS EXPECTED
MID TO LATE WEEK WITH GUSTS 15-20 MPH AT TIMES.
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY. 5-10 CHANCE OF SHOWERS/THUNDERSTORMS..
MIN TEMPERATURE.....71-75.
MAX HUMIDITY........41-45 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTH WINDS UP TO 5 MPH EARLY IN THE EVENING
BECOMING LIGHT.
RIDGETOP...........SOUTH 3 TO 9 MPH BECOMING LIGHT.
MIXING HEIGHT.......400 FT AGL.
TRANSPORT WINDS.....SOUTH UP TO 9 MPH SHIFTING TO THE NORTH UP TO 6
MPH LATE IN THE EVENING.
CWR.................5 PERCENT.
CHANCE OF THUNDER...5-10 PERCENT.
TIME (PDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY COVER.......MC MC MC MC CDY MC MC MC CDY MC MC MC
CWR.............0 0 5 5 5 5 5 5 5 5 5 5
CHC OF THDR (%).0 0 5 10 10 10 10 10 10 5 5 5
TEMP............96 95 92 88 84 82 81 80 80 80 79 78
RH..............16 18 20 25 29 32 35 35 36 36 37 37
SL/VL WIND DIR..S S S S NE N N NE NE N NW NW
SL/VL WIND SPD..5 3 3 3 2 2 2 2 1 2 2 2
SL/VL WIND GUST.8 7 6 6 5 3 3 3 2 3 3 3
RIDGE WIND DIR..S S S S S N N N N N N N
RIDGE WIND SPD..9 9 8 8 8 3 3 3 3 3 3 6
MIX HGT (KFT)...4.1 4.1 0.5 0.5 0.5 0.5 0.5 0.5 0.4 0.4 0.4 0.5
TRANSP WIND DIR.S S S S S N N N N N N N
TRANSP WIND SPD.9 9 8 8 8 3 3 3 3 3 3 6
MONDAY
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY SUNNY. 5-10 CHANCE OF SHOWERS/THUNDERSTORMS.
MAX TEMPERATURE.....93-97.
MIN HUMIDITY........20-24 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......LIGHT WINDS BECOMING SOUTH UP TO 5 MPH LATE IN
THE AFTERNOON WITH GUSTS UNDER 10 MPH.
RIDGETOP...........NORTH AROUND 6 MPH SHIFTING TO THE SOUTH UP TO 7
MPH EARLY IN THE MORNING.
MIXING HEIGHT.......4000 FT AGL.
TRANSPORT WINDS.....NORTH AROUND 6 MPH SHIFTING TO THE SOUTH UP TO 7
MPH EARLY IN THE MORNING.
CWR.................5 PERCENT.
CHANCE OF THUNDER...5-10 PERCENT.
TIME (PDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY COVER.......MC MC MC MC CDY PC MC MC MC MC PC MC
CWR.............5 5 5 5 5 5 5 5 5 5 5 5
CHC OF THDR (%).5 5 5 5 5 5 10 10 10 10 10 10
TEMP............77 74 77 78 82 84 86 88 91 93 93 94
RH..............41 45 43 41 38 35 33 30 27 25 23 22
SL/VL WIND DIR..NW NE S SW SW SW SW SW SW S S S
SL/VL WIND SPD..2 2 2 2 2 3 3 3 3 5 5 3
SL/VL WIND GUST.5 3 5 5 5 6 6 7 8 9 9 9
RIDGE WIND DIR..N N S S S SW SW SW S S S S
RIDGE WIND SPD..6 6 2 2 2 5 5 5 6 6 6 7
MIX HGT (KFT)...0.5 0.5 1.0 1.0 1.0 2.4 2.4 2.4 4.0 4.0 4.0 3.7
TRANSP WIND DIR.N N S S S SW SW SW S S S S
TRANSP WIND SPD.6 6 2 2 2 5 5 5 6 6 6 7
FORECAST DAYS 3 THROUGH 5
TUESDAY
PARTLY CLOUDY. LOWS AROUND 70. HIGHS IN THE UPPER 90S. SOUTH WINDS 4 TO 8 MPH DURING THE AFTERNOON, WITH GUSTS NEAR OR LESS THAN 10 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS IN THE LOWER 70S. HIGHS AROUND 100. SOUTH WINDS 5 TO 9 MPH DURING THE AFTERNOON, WITH GUSTS 15-20 MPH
THURSDAY
CLEAR. LOWS AROUND 70. HIGHS IN THE UPPER 90S. SOUTH WINDS 5 TO 9 MPH DURING THE AFTERNOON, WITH GUSTS 15-20 MPH
FORECASTER...KF
REQUESTED BY...TROY VELIN
TYPE OF REQUEST...WILDFIRE
.TAG 2617720.1/STO
.DELDT 07/19/26
.FORMATTERVERSION 2.0.0
.EMAIL SHU.INTEL@FIRE.CA.GOV,TROY.VELIN@FIRE.CA.GOV,SHUECCSTAFF@FIRE.CA.GOV
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