974
FXUS66 KSTO 231921
AFDSTO
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SACRAMENTO CA
1221 PM PDT THU JUL 23 2026
KEY MESSAGES
- ELEVATED FIRE WEATHER CONDITIONS FRIDAY AND SATURDAY WITHIN THE
BURNEY BASIN DUE TO LOW RELATIVE HUMIDITY AND BREEZY WESTERLY
WINDS.
- SEASONABLE TEMPERATURES CONTINUING THROUGH THE WEEKEND AND
INTO EARLY NEXT WEEK, FOLLOWED BY INCREASING HEATRISK MID TO
LATE NEXT WEEK.
DISCUSSION
VISIBLE SATELLITE IMAGERY DEPICTS ABUNDANT CLEAR
SKIES ACROSS THE AREA AS A DRIER AIRMASS MOVES IN. DRY WEATHER
CONDITIONS ARE EXPECTED TO CONTINUE ACROSS INTERIOR NORTHERN
CALIFORNIA THROUGH THE WEEKEND AND INTO NEXT WEEK, WITH MORE
SEASONABLE TEMPERATURES AND MAINLY MINOR HEATRISK.
BREEZY ONSHORE WINDS DEVELOPING THIS AFTERNOON/EVENING, WITH
GUSTS UP TO 25KTS AT TIMES FOR PARTS OF THE VALLEY. HIGH
TEMPERATURESWILL WARM UP INTO MID 90S THIS AFTERNOON, ESPECIALLY
NORTH OF THE SACRAMENTO VALLEY AND NORTHERN SAN JOAQUIN VALLEY.
FRIDAY AND SATURDAY, WINDS ARE EXPECTED TO INCREASE FOR PARTS OF
THE SOUTHERN CASCADES AND INTO THE BURNEY BASIN/NE FOOTHILLS,
WITH PERIODIC GUSTS TO 25KTS. THE NBM PROBABILITY INDICATE THERE
IS A 30-55 PERCENT CHANCES FOR GUSTS REACHING OR EXCEEDING 30 MPH
ON FRIDAY, WITH 25-45 PERCENT CHANCES ON SATURDAY. CONDITIONS
WILL BE DRY ACROSS MUCH OF THE AREA, AND ESPECIALLY IN THE BURNEY
BASIN OVER THE WEEKEND. ELEVATED FIRE WEATHER CONDITIONS ARE
EXPECTED WITHIN THE BURNEY BASIN FRIDAY INTO SATURDAY DUE TO THE
LOW RH VALUES COMBINED WITH THE BREEZY WESTERLY WINDS. WE WILL
CONTINUE TO MONITOR ANY CHANGES TO THE FORECAST ON ANY HIGHER
WIND POTENTIAL FRIDAY AND SATURDAY FOR THE BURNEY BASIN AND IF ANY
ADDITIONAL HEADLINES ARE NEEDED.
HIGH PRESSURE WILL CONTINUE TO DOMINATE THE SYNOPTIC PATTERN
ACROSS THE AREA THROUGH THE EXTENDED PERIOD. THE UPPER LEVEL RIDGE
WILL PUSH BACK INTO THE WRN CONUS MID TO LATE NEXT WEEK ALLOWING
HIGH TEMPERATURES REACHING INTO THE TRIPLE DIGITS. WITH THE
EXPANDING HEAT THERE WILL ALSO BE INCREASING HEATRISK IN THE
VALLEY, PARTICULARLY FOR NORTHERN SACRAMENTO VALLEY.
AVIATION
VFR CONDITIONS PREVAIL ACROSS INTERIOR NORCAL NEXT 24
HOURS. SKC WITH FEW CLOUDS PASSING THROUGH IN THE AFTERNOON AND
EVENING. LOCALLY BREEZY ONSHORE FLOW PATTERN CONTINUES FOR DELTA
AND SACRAMENTO TAF SITES, WITH SURFACE GUSTS UP TO 20 KTS. RDD AND
RBL SURFACE GUSTS FROM SOUTH UP TO 20 KTS AS WELL FROM 00Z FRIDAY
- 06Z. WEST WIND GUSTS UP TO 25 KTS IN MOUNTAINS.
STO WATCHES/WARNINGS/ADVISORIES
NONE.
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