Building high pressure over the area brought drying northerly winds to the area, creating critical fire weather conditions.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS STO wrote it up.
Building high pressure over the area brought drying northerly winds to the area, creating critical fire weather conditions.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Sacramento, CA wrote its last area forecast discussion before the first event at Sep 23, 2:58 AM PST, 10 hours 2 minutes earlier.
Area Forecast Discussion National Weather Service Sacramento CA 358 AM PDT Sat Sep 23 2017 .SYNOPSIS... Turning warmer and drier into next week with breezy north winds. && .DISCUSSION... Upper low will shift east into Utah Today leaving NorCal in a much drier...but breezy north flow. This will cause temps to warm back to around 80 degrees Today and into the 80's Sunday at valley locations. North wind gusts from 20 to 25 mph will be possible over the northern and central Sacramento valley from this afternoon through Monday. The warm-up will continue into Tuesday with readings from the upper 80's to low 90's for many locations...as Pacific ridge builds eastward. && .EXTENDED DISCUSSION (Wednesday THROUGH Saturday) Warm and dry weather dominates in the extended period as upper level ridging from the eastern Pacific continues to build over the area. An upper level low develops over the Great Basin and retrogrades over Southern California. This will act to limit warming over the region to some extent. Temperatures across interior NorCal will range from 5 to 10 degrees above seasonal normals through Friday. Valley highs will be in the low 90s through at least the end of the week. The foothill and mountain high temperatures will range from the 60s to the 80s. Northerly winds continue into Thursday, though not as strong as earlier in the week. EK/HEC && .AVIATION... VFR conditions expected for Valley TAF sites for the next 24 hours with clear skies. Low level wind shear is possible this morning through around 15z, with north surface winds around 5kt, north winds at 200 ft AGL around 30 kt. North winds expected to increase this afternoon gusting to around 20 to 25 kts in the Valley. && .STO WATCHES/WARNINGS/ADVISORIES... Fire Weather Watch from Sunday afternoon through late Monday night for Carquinez Strait and Delta-Central Sacramento Valley in Glenn, Colusa, Yuba, Northern Sutter, and Butte County Below 1000 Ft-Eastern Mendocino NF-Eastern Portion of Shasta/Trinity NF-Lake County Portion of Lake-Napa-Sonoma Unit-Northern Motherlode From 1000 to 3000 Ft. Includes portions of Nevada- Yuba-Placer-Amador and ElDorado Units-Northern Sacramento Valley to Southern Tehama County Line Below 1000 Ft-Northern Sierra Foothills from 1000 to 3000 Ft. Includes portions of Shasta- Trinity and Butte Units-Northern Sierra Including Lassen NP and Plumas and Lassen NF/S West of the Sierra Crest (West of Evans Peak-Grizzly Peak-Beckworth Peak)-Northern Sierra Including the Tahoe and ElDorado NF/S West of the Sierra Crest-Southeast Edge Shasta-Trinity NF and Western Portions of Tehama-Glenn Unit- Southern Motherlode From 1000 to 3000 Ft. Includes portions of Calaveras-Tuolumne Unit-Southern Sacramento Valley in Yolo- Sacramento Far Western Placer, southern Sutter and Solano County Below 1000 Ft-Stanislaus NF West of the Sierra Crest. &&
1 wildfire. Local standard time, as filed.
The Estate Fire was a 65-acre grass fire which destroyed two homes, two RVs, and multiple vehicles and outbuildings. The fire was 100 percent contained by 7 pm PST. Winds gusted to 32 mph at Vacaville Airport, at 10:36 am PST. Humidity dropped to 13 percent by 12:35 pm PST at the airport.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in California in 2017Every state in 2017This day in weather historyWarnings in California, September 2017
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 715504.