Thunderstorms produced local road flooding in various locations over interior northern California. Debris flows occurred at the King Fire burn area.
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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.
Thunderstorms produced local road flooding in various locations over interior northern California. Debris flows occurred at the King Fire burn area.
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 25, 2:41 AM PST, 19 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SACRAMENTO CA 341 AM PDT Thu Sep 25 2014 .Synopsis... Low pressure moving over NorCal will continue to bring cooler and wetter weather through Friday night. Lingering showers over the mountains possible through Sunday, then warmer and drier. && .Discussion... The low pressure system off the coast continues to slowly push a frontal rain band of moderate to heavy precipitation into northern California this morning. Rainfall amounts in Shasta County have reached 1 to 2 inches in the past 6 hours, with heaviest amounts over the higher terrain. Almost an inch of rainfall has fallen over Tehama county and the coastal range since precipitation started yesterday evening. Due to the slow nature of the ran band and heavy rainfall amounts, an urban and small stream flood advisory has been issued for western Shasta and north central Tehama Counties. In addition, some rock slides have been reported among steep terrain along HWY 299. The frontal rain band is expected to reach Sacramento metro and northern Sierra by morning commute hours, and continue to slowly push eastward late this morning. In its wake, the cold unstable air mass aloft will introduce some instability over the northern and central Sac Valley and coastal range, which could be favorable for a few thunderstorms to develop late this afternoon/evening. Temperatures today will stay well below normal as the cooler air mass with wet and cloudy weather remains over the area. Cool fall-like temperatures will continue into Friday as the center of the low swings through California. Some additional showers or thunderstorms may be possible with best chances over the higher terrain through Friday night. By the weekend, the center of the low is forecast to track eastward into the Great Basin. Some wrap around moisture may produce lingering showers and unsettled weather mainly over the Sierra through the weekend. The cooler airmass aloft might even allow an inch or two of snow to fall on the higher elevations of the Sierra south of Tahoe...with snow levels around 8500-9000ft over the local area. Otherwise, the rest of NorCal will have drier and warmer weather over the weekend. Shen && .Extended Discussion (Monday through Thursday) The upper low will finally eject to the east early next week, with drier and warmer weather expected across the forecast area. The way the pattern is shaping up, it's likely that we'll see periods of northerly winds across Northern California through much of the extended period. However, with some subtle differences in position and strength of shortwave troughs as they pass through the region, there is still considerable uncertainty on the potential impact of these northerly winds. Dang && .Aviation... Cold frontal system moving across the forecast area this morning. Generally expect VFR/MVFR conditions across the Valley and IFR conditions over the mountains in RA. Cold front should move south and east of Sacramento TAF sites around 18z. Behind the front, scattered SHRA and possibly isolated TS may develop this afternoon and evening north of KMYV. Winds across the Valley will remain around or below 10 kt today. Over Sierra ridges...wind gusts up to 40 kt will be possible through this afternoon. Dang && .STO Watches/Warnings/Advisories... None. &&
The Beale AFB radar (KBBX), 113 km away, was scanning. The volume nearest the first event began at 11:01 UTC.
2 debris flow, 1 flood, 1 flash flood. Local standard time, as filed.
CHP reported roadway flooding near Panorama Pt. Rd. and Balls Ferry Rd.
Rains produced several small debris flows. One was on Forebay Road after it crosses the American River and becomes Forest Road 123N34 due to storm rains.|A second debris flow deposit was recorded at the Day Use area at Forbear Road and the South Fork American River. Some minor mudflow deposits occurred below the denuded slope of the upper burned portion of Spring Valley Road.
Rockville Rd. flooded, with erosion to the road and rocks from a wall on the road.
Heavy rain from several days of thunderstorms caused debris flows, blocking the road to Brush Creek Reservoir.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in California in 2014Every state in 2014This day in weather historyWarnings in California, September 2014
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: 543898, 543895, 543892, 543896.