Alert archive / California / River Flood Warnings
River Flood Warnings in California, 2017
118 river flood warnings in 2017. 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 river flood warnings reaches back to 2005.
River Flood Warnings by county
Each county as a circle sized by its count in 2017. Tap one for its archive.
- River Flood Warnings
- 118
- Busiest month
- February62 river flood warnings
- Busiest day
- January 8, 201713 river 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 |
|---|---|---|---|---|
| Jan 6, 9:08 AM PST | River Flood Warning | REV | Nevada, Placer | 4 days |
| Jan 6, 9:31 AM PST | River Flood Warning | REV | Alpine | 3 days |
| Jan 6, 9:37 AM PST | River Flood Warning | REV | Mono | 3 days |
| Jan 6, 9:45 AM PST | River Flood Warning | REV | Lassen | 3 days |
| Jan 6, 9:48 AM PST | River Flood Warning | REV | Plumas | 5 days |
| Jan 7, 9:03 AM PST | River Flood Warning | HNX | Mariposa | 54 hr |
| Jan 7, 9:49 AM PST | River Flood Warning | STO | Amador, El Dorado, Sacramento | 54 hr |
| Jan 7, 8:47 PM PST | River Flood Warning | REV | Alpine | 44 hr |
| Jan 7, 9:10 PM PST | River Flood Warning | STO | Tehama | 4 days |
| Jan 7, 9:12 PM PST | River Flood Warning | MTR | Santa Clara | 25 hr |
| Jan 7, 9:12 PM PST | River Flood Warning | MTR | Napa | 35 hr |
| Jan 7, 11:35 PM PST | River Flood Warning | MTR | Monterey | 24 hr |
| Jan 8, 2:55 AM PST | River Flood Warning | STO | Sacramento, San Joaquin | 24 hr |
| Jan 8, 3:26 AM PST | River Flood Warning | MTR | Napa | 32 hr |
| Jan 8, 3:26 AM PST | River Flood Warning | MTR | Sonoma | 5 days |
| Jan 8, 3:48 AM PST | River Flood Warning | EKA | Mendocino | 4 days |
| Jan 8, 9:16 AM PST | River Flood Warning | EKA | Humboldt | 4 days |
| Jan 8, 9:49 AM PST | River Flood Warning | STO | Tehama | 36 hr |
| Jan 8, 9:49 AM PST | River Flood Warning | STO | Butte, Glenn | 4 days |
| Jan 8, 3:23 PM PST | River Flood Warning | STO | Yolo | 27 hr |
| Jan 9, 2:46 AM PST | River Flood Warning | REV | Alpine | 24 hr |
| Jan 9, 3:09 PM PST | River Flood Warning | EKA | Mendocino | 46 hr |
| Jan 9, 3:09 PM PST | River Flood Warning | EKA | Humboldt | 37 hr |
| Jan 9, 3:09 PM PST | River Flood Warning | EKA | Humboldt | 40 hr |
| Jan 9, 10:00 PM PST | River Flood Warning | STO | Amador, El Dorado, Sacramento | 35 hr |
| Jan 10, 2:25 AM PST | River Flood Warning | MTR | Napa | 25 hr |
| Jan 10, 2:25 AM PST | River Flood Warning | MTR | Napa | 31 hr |
| Jan 10, 8:53 AM PST | River Flood Warning | STO | Tehama | 35 hr |
| Jan 10, 9:28 AM PST | River Flood Warning | STO | Solano, Yolo | 7 days |
| Jan 10, 2:05 PM PST | River Flood Warning | STO | Sacramento, San Joaquin | 24 hr |
| Jan 10, 2:30 PM PST | River Flood Warning | EKA | Humboldt | 27 hr |
| Jan 10, 9:58 PM PST | River Flood Warning | STO | Sacramento, San Joaquin | 65 hr |
| Jan 11, 12:45 AM PST | River Flood Warning | MTR | Monterey | 15 hr |
| Jan 12, 2:32 AM PST | River Flood Warning | REV | Plumas | 32 hr |
| Jan 18, 8:44 AM PST | River Flood Warning | STO | Tehama | 5 days |
| Jan 18, 8:44 AM PST | River Flood Warning | STO | Tehama | 24 hr |
| Jan 18, 2:58 PM PST | River Flood Warning | EKA | Mendocino | 26 hr |
| Jan 19, 1:56 AM PST | River Flood Warning | STO | Butte, Glenn | 24 hr |
| Jan 19, 2:51 PM PST | River Flood Warning | EKA | Mendocino | 32 hr |
| Jan 20, 6:01 PM PST | River Flood Warning | SGX | San Diego | 10 hr |
| Jan 20, 8:40 PM PST | River Flood Warning | STO | Butte, Glenn | 31 hr |
| Jan 20, 8:54 PM PST | River Flood Warning | STO | Solano, Yolo | 3 days |
| Jan 21, 3:45 PM PST | River Flood Warning | EKA | Mendocino | 26 hr |
| Jan 22, 9:11 AM PST | River Flood Warning | STO | Butte, Glenn | 45 hr |
| Jan 22, 11:55 AM PST | River Flood Warning | SGX | San Diego | 42 hr |
| Jan 22, 8:19 PM PST | River Flood Warning | SGX | San Diego | 24 hr |
| Feb 6, 9:02 AM PST | River Flood Warning | STO | Amador, El Dorado, Sacramento | 42 hr |
| Feb 6, 2:13 PM PST | River Flood Warning | STO | Tehama | 25 days |
| Feb 6, 2:53 PM PST | River Flood Warning | STO | Solano, Yolo | 24 days |
| Feb 6, 3:30 PM PST | River Flood Warning | REV | Plumas | 7 days |
| Feb 6, 9:07 PM PST | River Flood Warning | STO | Tehama | 5 days |
| Feb 6, 9:11 PM PST | River Flood Warning | MFR | Modoc | 6 days |
| Feb 7, 2:14 AM PST | River Flood Warning | STO | Butte, Glenn | 10 days |
| Feb 7, 3:36 AM PST | River Flood Warning | REV | Lassen | 4 days |
| Feb 7, 5:18 AM PST | River Flood Warning | EKA | Mendocino | 3 days |
| Feb 7, 9:13 AM PST | River Flood Warning | EKA | Humboldt | 3 days |
| Feb 7, 9:32 AM PST | River Flood Warning | EKA | Mendocino | 16 hr |
| Feb 7, 9:49 AM PST | River Flood Warning | STO | Tehama | 24 hr |
| Feb 7, 10:02 AM PST | River Flood Warning | STO | Lake | 31 days |
| Feb 7, 11:04 AM PST | River Flood Warning | MTR | Sonoma | 4 days |
| Feb 7, 2:00 PM PST | River Flood Warning | STO | Tehama | 15 hr |
| Feb 8, 10:00 AM PST | River Flood Warning | STO | Butte, Glenn | 15 hr |
| Feb 8, 10:42 AM PST | River Flood Warning | REV | Nevada, Placer | 44 hr |
| Feb 8, 2:01 PM PST | River Flood Warning | MFR | Siskiyou | 62 hr |
| Feb 8, 2:01 PM PST | River Flood Warning | MFR | Siskiyou | 60 hr |
| Feb 8, 3:10 PM PST | River Flood Warning | EKA | Del Norte, Humboldt | 54 hr |
| Feb 8, 3:15 PM PST | River Flood Warning | HNX | Mariposa | 29 hr |
| Feb 8, 3:16 PM PST | River Flood Warning | STO | Amador, El Dorado, Sacramento | 60 hr |
| Feb 8, 8:46 PM PST | River Flood Warning | STO | Tehama | 24 hr |
| Feb 9, 4:10 AM PST | River Flood Warning | MTR | Napa | 24 hr |
| Feb 9, 8:39 AM PST | River Flood Warning | EKA | Humboldt | 12 hr |
| Feb 9, 2:27 PM PST | River Flood Warning | HNX | Merced | 37 hr |
| Feb 9, 3:36 PM PST | River Flood Warning | EKA | Mendocino | 19 hr |
| Feb 9, 3:36 PM PST | River Flood Warning | MTR | Napa | 23 hr |
| Feb 9, 8:39 PM PST | River Flood Warning | REV | Alpine | 20 hr |
| Feb 10, 3:38 AM PST | River Flood Warning | STO | Sacramento, San Joaquin | 3 days |
| Feb 13, 8:54 AM PST | River Flood Warning | STO | San Joaquin | 24 hr |
| Feb 13, 2:06 PM PST | River Flood Warning | STO | Tehama | 24 hr |
| Feb 13, 2:06 PM PST | River Flood Warning | STO | Tehama | 67 hr |
| Feb 13, 8:38 PM PST | River Flood Warning | HNX | Merced | 48 hr |
| Feb 13, 8:45 PM PST | River Flood Warning | STO | San Joaquin | 65 hr |
| Feb 15, 8:44 AM PST | River Flood Warning | STO | Tehama | 24 hr |
| Feb 16, 1:52 AM PST | River Flood Warning | STO | Tehama | 24 hr |
| Feb 17, 8:41 AM PST | River Flood Warning | STO | Tehama | 48 hr |
| Feb 17, 8:41 AM PST | River Flood Warning | STO | Tehama | 3 days |
| Feb 17, 9:11 AM PST | River Flood Warning | STO | San Joaquin | 14 days |
| Feb 17, 9:30 AM PST | River Flood Warning | HNX | Merced | 54 hr |
| Feb 17, 2:28 PM PST | River Flood Warning | STO | Butte, Glenn | 5 days |
| Feb 17, 2:53 PM PST | River Flood Warning | HNX | Merced, Stanislaus | 24 hr |
| Feb 17, 4:00 PM PST | River Flood Warning | LOX | Ventura | 7 hr |
| Feb 18, 4:05 PM PST | River Flood Warning | REV | Plumas | 5 days |
| Feb 19, 8:51 AM PST | River Flood Warning | STO | Butte, Glenn | 19 hr |
| Feb 19, 3:24 PM PST | River Flood Warning | STO | Stanislaus | 10 days |
| Feb 19, 7:57 PM PST | River Flood Warning | STO | Amador, El Dorado, Sacramento | 43 hr |
| Feb 20, 2:30 AM PST | River Flood Warning | HNX | Merced | 24 hr |
| Feb 20, 2:42 AM PST | River Flood Warning | STO | Stanislaus | 24 hr |
| Feb 20, 3:53 AM PST | River Flood Warning | MTR | Santa Clara | 59 hr |
| Feb 20, 4:33 AM PST | River Flood Warning | EKA | Mendocino | 37 hr |
| Feb 20, 5:03 AM PST | River Flood Warning | MTR | Monterey | 29 hr |
| Feb 20, 5:02 PM PST | River Flood Warning | MTR | Monterey | 24 hr |
| Feb 20, 7:37 PM PST | River Flood Warning | EKA | Mendocino | 19 hr |
| Feb 21, 9:36 AM PST | River Flood Warning | MFR | Modoc | 53 hr |
| Feb 21, 3:02 PM PST | River Flood Warning | STO | Sacramento, San Joaquin | 24 hr |
| Feb 22, 1:44 AM PST | River Flood Warning | STO | Stanislaus | 24 hr |
| Feb 22, 8:13 AM PST | River Flood Warning | STO | Tehama | 25 hr |
| Feb 22, 1:44 PM PST | River Flood Warning | STO | Butte, Glenn | 6 days |
| Feb 23, 9:32 AM PST | River Flood Warning | STO | Tehama | 28 hr |
| Feb 27, 12:42 PM PST | River Flood Warning | SGX | San Diego | 26 hr |
| Mar 3, 2:26 PM PST | River Flood Warning | STO | Stanislaus | 47 hr |
| May 2, 8:28 AM PDT | River Flood Warning | HNX | Mariposa | 5 days |
| May 9, 8:32 AM PDT | River Flood Warning | HNX | Mariposa | 56 hr |
| May 12, 8:29 AM PDT | River Flood Warning | HNX | Mariposa | 36 hr |
| May 22, 7:23 AM PDT | River Flood Warning | HNX | Mariposa | 3 days |
| May 28, 8:40 AM PDT | River Flood Warning | HNX | Mariposa | 4 days |
| Jun 2, 10:13 AM PDT | River Flood Warning | HNX | Mariposa | 5 days |
| Jun 5, 2:32 AM PDT | River Flood Warning | REV | Mono | 4 days |
| Jun 18, 8:28 AM PDT | River Flood Warning | HNX | Mariposa | 5 days |
| Jun 18, 9:37 AM PDT | River Flood Warning | REV | Mono | 10 days |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Tehama County18
- Sacramento County10
- Mendocino County10
- Mariposa County9
- Butte County9
- Glenn County9
- San Joaquin County8
- Humboldt County7
- Napa County6
- Amador County5
- El Dorado County5
- Merced County5
- Stanislaus County5
- Alpine County4
- Plumas County4
- Monterey County4
- Yolo County4
- San Diego County4
- Mono County3
- Solano County3
- Nevada County2
- Placer County2
- Lassen County2
- Santa Clara County2
- Sonoma County2
- Modoc County2
- Siskiyou County2
- Lake County1
- Del Norte County1
- Ventura County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20162018
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.