Alert archive / California / Flash Flood Warnings
Flash Flood Warnings in California, 1986
73 flash flood warnings in 1986. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of flash flood warnings reaches back to 1986.
Flash Flood Warnings by county
Each county as a circle sized by its count in 1986. Tap one for its archive.
- Flash Flood Warnings
- 73
- Busiest month
- February63 flash flood warnings
- Busiest day
- February 18, 198624 flash flood warnings
Over time
By month
The alerts
Every alert, in the order issued. Times are local, Pacific Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 14, 5:15 PM PST | Flash Flood Warning | STO | Tehama | 4 hr |
| Feb 14, 7:45 PM PST | Flash Flood Warning | LOX | Los Angeles, Ventura | 2 hr |
| Feb 14, 10:00 PM PST | Flash Flood Warning | LOX | Los Angeles, Ventura | 2 hr |
| Feb 14, 11:30 PM PST | Flash Flood Warning | MTR | Marin, Sonoma | 9 hr |
| Feb 14, 11:30 PM PST | Flash Flood Warning | MTR | Napa | 9 hr |
| Feb 15, 12:35 AM PST | Flash Flood Warning | STO | Butte, Glenn, Tehama | 8 hr |
| Feb 16, 5:00 PM PST | Flash Flood Warning | MTR | Napa, Sonoma | 8 hr |
| Feb 16, 5:00 PM PST | Flash Flood Warning | MTR | Marin | 8 hr |
| Feb 17, 4:00 AM PST | Flash Flood Warning | STO | Tehama | 8 hr |
| Feb 17, 10:00 AM PST | Flash Flood Warning | STO | Tehama | 14 hr |
| Feb 17, 10:20 AM PST | Flash Flood Warning | MTR | Marin, Sonoma | 14 hr |
| Feb 17, 10:20 AM PST | Flash Flood Warning | MTR | Napa | 14 hr |
| Feb 17, 11:00 AM PST | Flash Flood Warning | STO | Shasta | 13 hr |
| Feb 17, 11:15 AM PST | Flash Flood Warning | STO | Trinity | 13 hr |
| Feb 17, 12:30 PM PST | Flash Flood Warning | MTR | San Mateo, Santa Clara, Santa Cruz | 12 hr |
| Feb 17, 12:30 PM PST | Flash Flood Warning | STO | Nevada, Placer, Sierra, Yuba | 12 hr |
| Feb 17, 12:30 PM PST | Flash Flood Warning | STO | Alpine, Amador, Calaveras, El Dorado | 12 hr |
| Feb 17, 12:30 PM PST | Flash Flood Warning | STO | Tuolumne | 12 hr |
| Feb 17, 1:30 PM PST | Flash Flood Warning | STO | Nevada, Placer, Sierra, Yuba | 11 hr |
| Feb 17, 1:30 PM PST | Flash Flood Warning | STO | Alpine, Amador, Calaveras, El Dorado, Sacramento, San Joaquin | 11 hr |
| Feb 17, 1:30 PM PST | Flash Flood Warning | STO | Stanislaus, Tuolumne | 11 hr |
| Feb 17, 1:30 PM PST | Flash Flood Warning | STO | Colusa, Yolo | 11 hr |
| Feb 17, 1:30 PM PST | Flash Flood Warning | STO | Solano | 11 hr |
| Feb 17, 2:40 PM PST | Flash Flood Warning | MTR | Alameda, Contra Costa | 9 hr |
| Feb 17, 5:00 PM PST | Flash Flood Warning | STO | Tehama | 7 hr |
| Feb 17, 6:30 PM PST | Flash Flood Warning | STO | Plumas | 12 hr |
| Feb 17, 7:00 PM PST | Flash Flood Warning | MTR | San Mateo, Santa Clara, Santa Cruz | 14 hr |
| Feb 17, 7:00 PM PST | Flash Flood Warning | MTR | Marin | 14 hr |
| Feb 17, 7:00 PM PST | Flash Flood Warning | MTR | Monterey | 14 hr |
| Feb 17, 7:00 PM PST | Flash Flood Warning | MTR | Alameda, Contra Costa | 14 hr |
| Feb 17, 7:00 PM PST | Flash Flood Warning | MTR | Napa, Sonoma | 14 hr |
| Feb 17, 8:30 PM PST | Flash Flood Warning | STO | Nevada, Sierra, Yuba | 13 hr |
| Feb 17, 8:30 PM PST | Flash Flood Warning | STO | Amador, Calaveras, Sacramento, San Joaquin, Stanislaus | 13 hr |
| Feb 17, 8:30 PM PST | Flash Flood Warning | STO | Alpine, El Dorado, Placer | 13 hr |
| Feb 17, 8:30 PM PST | Flash Flood Warning | STO | Tuolumne | 13 hr |
| Feb 17, 8:30 PM PST | Flash Flood Warning | STO | Solano, Yolo | 13 hr |
| Feb 17, 8:30 PM PST | Flash Flood Warning | STO | Colusa, Sutter | 13 hr |
| Feb 17, 9:00 PM PST | Flash Flood Warning | EKA | Lake | 12 hr |
| Feb 17, 9:00 PM PST | Flash Flood Warning | STO | Shasta, Tehama, Trinity | 12 hr |
| Feb 17, 9:00 PM PST | Flash Flood Warning | STO | Butte, Glenn | 12 hr |
| Feb 17, 9:00 PM PST | Flash Flood Warning | STO | Lassen, Plumas | 12 hr |
| Feb 17, 11:00 PM PST | Flash Flood Warning | HNX | Fresno, Madera | 10 hr |
| Feb 17, 11:00 PM PST | Flash Flood Warning | HNX | Mariposa | 10 hr |
| Feb 18, 9:00 AM PST | Flash Flood Warning | STO | Colusa, Placer, Sacramento, Sutter, Yolo, Yuba | 9 hr |
| Feb 18, 9:00 AM PST | Flash Flood Warning | STO | Alpine, Amador, Calaveras, El Dorado, San Joaquin | 9 hr |
| Feb 18, 9:00 AM PST | Flash Flood Warning | STO | Stanislaus, Tuolumne | 9 hr |
| Feb 18, 9:00 AM PST | Flash Flood Warning | STO | Nevada, Plumas, Sierra | 9 hr |
| Feb 18, 9:00 AM PST | Flash Flood Warning | STO | Solano | 9 hr |
| Feb 18, 5:30 PM PST | Flash Flood Warning | STO | Amador, Sacramento, San Joaquin | 13 hr |
| Feb 18, 5:30 PM PST | Flash Flood Warning | STO | Nevada, Placer | 13 hr |
| Feb 18, 5:30 PM PST | Flash Flood Warning | STO | Solano, Yolo | 13 hr |
| Feb 18, 5:30 PM PST | Flash Flood Warning | STO | El Dorado | 13 hr |
| Feb 18, 6:30 PM PST | Flash Flood Warning | EKA | Mendocino | 10 hr |
| Feb 18, 9:00 PM PST | Flash Flood Warning | MTR | Santa Clara, Santa Cruz | 9 hr |
| Feb 19, 3:00 AM PST | Flash Flood Warning | STO | Alpine, Amador, Calaveras, El Dorado | 6 hr |
| Feb 19, 3:00 AM PST | Flash Flood Warning | STO | Tuolumne | 6 hr |
| Feb 19, 3:00 AM PST | Flash Flood Warning | STO | Placer | 6 hr |
| Feb 19, 3:30 AM PST | Flash Flood Warning | MTR | Alameda, Contra Costa, Santa Clara | 6 hr |
| Feb 19, 3:30 AM PST | Flash Flood Warning | MTR | Marin, Napa, Sonoma | 6 hr |
| Feb 19, 3:30 AM PST | Flash Flood Warning | MTR | San Mateo, Santa Cruz | 6 hr |
| Feb 19, 4:40 AM PST | Flash Flood Warning | LOX | Santa Barbara, Ventura | 3 hr |
| Feb 19, 5:40 PM PST | Flash Flood Warning | HNX | Madera | 3 hr |
| Feb 20, 8:30 PM PST | Flash Flood Warning | STO | Yuba | 10 hr |
| Mar 7, 11:16 AM PST | Flash Flood Warning | EKA | Mendocino | 5 hr |
| Mar 8, 9:55 AM PST | Flash Flood Warning | STO | El Dorado, Placer | 6 hr |
| Mar 8, 9:55 AM PST | Flash Flood Warning | STO | Calaveras, Tuolumne | 6 hr |
| Mar 8, 9:55 AM PST | Flash Flood Warning | STO | Amador | 6 hr |
| Mar 8, 4:00 PM PST | Flash Flood Warning | STO | Tehama | 15 hr |
| Aug 9, 3:52 PM PDT | Flash Flood Warning | LOX | Riverside | 2 hr |
| Aug 9, 3:52 PM PDT | Flash Flood Warning | LOX | San Bernardino | 2 hr |
| Aug 18, 4:20 PM PDT | Flash Flood Warning | LOX | Riverside | 2 hr |
| Dec 8, 7:30 AM PST | Flash Flood Warning | HNX | Mariposa | 8 hr |
| Dec 8, 9:20 AM PST | Flash Flood Warning | HNX | Madera | 6 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Tehama County7
- Placer County7
- Amador County7
- El Dorado County7
- Calaveras County6
- Tuolumne County6
- Marin County5
- Sonoma County5
- Napa County5
- Nevada County5
- Yuba County5
- Alpine County5
- Santa Clara County4
- Santa Cruz County4
- Sierra County4
- Sacramento County4
- San Joaquin County4
- Yolo County4
- Solano County4
- Ventura County3
- San Mateo County3
- Stanislaus County3
- Colusa County3
- Alameda County3
- Contra Costa County3
- Plumas County3
- Madera County3
- Los Angeles County2
- Butte County2
- Glenn County2
- Shasta County2
- Trinity County2
- Sutter County2
- Mariposa County2
- Mendocino County2
- Riverside County2
- Monterey County1
- Lake County1
- Lassen County1
- Fresno County1
2 more counties
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Sources
National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Rebuilt daily.