Weather alerts in California, 1997
290 weather alerts in 1997, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.
Weather alerts by county
Each county as a circle sized by its count in 1997. Tap one for its archive.
- Alerts
- 290
- Warnings
- 290
- Watches
- 0
- Advisories
- 0
- Busiest month
- September81 alerts
- Busiest day
- September 3, 199721 alerts
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 1, 1:20 AM PST | Flash Flood Warning | MTR | San Mateo, Santa Clara, Santa Cruz | 6 hr |
| Jan 1, 2:42 AM PST | Flash Flood Warning | MTR | Napa | 6 hr |
| Jan 1, 5:45 AM PST | Flash Flood Warning | STO | Solano | 6 hr |
| Jan 1, 7:18 AM PST | Flash Flood Warning | MTR | Alameda, Contra Costa | 3 hr |
| Jan 1, 7:31 AM PST | Flash Flood Warning | MTR | San Mateo, Santa Clara, Santa Cruz | 4 hr |
| Jan 1, 8:25 AM PST | Flash Flood Warning | MTR | Sonoma | 4 hr |
| Jan 1, 8:25 AM PST | Flash Flood Warning | MTR | Marin | 4 hr |
| Jan 1, 8:25 AM PST | Flash Flood Warning | MTR | Napa | 4 hr |
| Jan 1, 9:00 AM PST | Flash Flood Warning | MTR | Monterey | 3 hr |
| Jan 1, 9:00 AM PST | Flash Flood Warning | MTR | Alameda, Contra Costa | 3 hr |
| Jan 1, 9:00 AM PST | Flash Flood Warning | MTR | San Mateo, Santa Clara, Santa Cruz | 3 hr |
| Jan 1, 10:40 AM PST | Flash Flood Warning | MTR | San Mateo, Santa Clara, Santa Cruz | 3 hr |
| Jan 1, 10:40 AM PST | Flash Flood Warning | MTR | Alameda, Contra Costa | 3 hr |
| Jan 1, 10:40 AM PST | Flash Flood Warning | MTR | Marin, Napa, Sonoma | 3 hr |
| Jan 1, 11:30 AM PST | Flash Flood Warning | MTR | Monterey | 5 hr |
| Jan 1, 1:59 PM PST | Flash Flood Warning | HNX | Mariposa | 6 hr |
| Jan 1, 2:15 PM PST | Flash Flood Warning | MTR | San Mateo, Santa Cruz | 2 hr |
| Jan 1, 3:55 PM PST | Flash Flood Warning | MTR | Monterey, Santa Cruz | 3 hr |
| Jan 1, 3:55 PM PST | Flash Flood Warning | MTR | San Mateo | 3 hr |
| Jan 1, 5:03 PM PST | Flash Flood Warning | MTR | Santa Clara | 117 min |
| Jan 1, 7:00 PM PST | Flash Flood Warning | MTR | San Mateo, Santa Clara, Santa Cruz | 4 hr |
| Jan 1, 7:22 PM PST | Flash Flood Warning | MTR | San Luis Obispo | 6 hr |
| Jan 1, 10:59 PM PST | Flash Flood Warning | MTR | San Mateo, Santa Clara, Santa Cruz | 3 hr |
| Jan 2, 5:52 AM PST | Flash Flood Warning | MTR | San Mateo, Santa Clara, Santa Cruz | 3 hr |
| Jan 2, 5:52 AM PST | Flash Flood Warning | MTR | Alameda, Contra Costa | 3 hr |
| Jan 2, 11:45 AM PST | Flash Flood Warning | MTR | Alameda, San Mateo, Santa Clara, Santa Cruz | 4 hr |
| Jan 2, 11:45 AM PST | Flash Flood Warning | MTR | Monterey | 4 hr |
| Jan 2, 11:45 AM PST | Flash Flood Warning | MTR | Contra Costa | 4 hr |
| Jan 2, 1:35 PM PST | Flash Flood Warning | STO | Sacramento | 95 min |
| Jan 2, 4:00 PM PST | Flash Flood Warning | MTR | San Mateo, Santa Clara, Santa Cruz | 4 hr |
| Jan 2, 4:00 PM PST | Flash Flood Warning | MTR | Monterey | 4 hr |
| Jan 2, 4:00 PM PST | Flash Flood Warning | MTR | Alameda, Contra Costa | 4 hr |
| Jan 2, 7:00 PM PST | Flash Flood Warning | HNX | Madera, Mariposa | 8 hr |
| Jan 2, 7:00 PM PST | Flash Flood Warning | HNX | Fresno, Tulare | 8 hr |
| Jan 2, 9:03 PM PST | Flash Flood Warning | STO | Yuba | 3 hr |
| Jan 2, 9:12 PM PST | Flash Flood Warning | HNX | Kern | 6 hr |
| Jan 4, 4:37 AM PST | Flash Flood Warning | HNX | Fresno | 6 hr |
| Jan 4, 5:08 AM PST | Flash Flood Warning | HNX | Fresno, Madera | 6 hr |
| Jan 4, 6:49 PM PST | Flash Flood Warning | STO | Sutter | 91 min |
| Jan 4, 9:50 PM PST | Flash Flood Warning | STO | Sutter | 5 hr |
| Jan 5, 2:01 PM PST | Flash Flood Warning | STO | San Joaquin | 69 min |
| Jan 10, 3:55 AM PST | Flash Flood Warning | STO | San Joaquin | 95 min |
| Jan 13, 12:15 AM PST | Severe Thunderstorm Warning | LOX | Los Angeles | 60 min |
| Jan 13, 12:20 AM PST | Flash Flood Warning | SGX | Orange | 115 min |
| Jan 13, 12:20 AM PST | Severe Thunderstorm Warning | SGX | Orange | 115 min |
| Jan 13, 1:00 AM PST | Flash Flood Warning | SGX | Riverside | 2 hr |
| Jan 13, 1:00 AM PST | Severe Thunderstorm Warning | SGX | Riverside | 2 hr |
| Jan 15, 2:45 PM PST | Severe Thunderstorm Warning | LOX | Santa Barbara | 45 min |
| Jan 20, 4:10 PM PST | Severe Thunderstorm Warning | HNX | Tulare | 35 min |
| Jan 22, 8:50 AM PST | Flash Flood Warning | EKA | Mendocino | 6 hr |
| Jan 22, 12:55 PM PST | Flash Flood Warning | STO | Butte, Colusa, Glenn, Sutter, Yuba | 8 hr |
| Jan 22, 2:15 PM PST | Flash Flood Warning | MTR | Napa, Sonoma | 4 hr |
| Jan 22, 2:15 PM PST | Flash Flood Warning | MTR | Marin | 4 hr |
| Jan 22, 2:15 PM PST | Flash Flood Warning | MTR | City and County of San Francisco | 4 hr |
| Jan 22, 2:15 PM PST | Flash Flood Warning | MTR | Contra Costa | 4 hr |
| Jan 22, 3:50 PM PST | Flash Flood Warning | STO | Placer, Sacramento | 5 hr |
| Jan 22, 5:20 PM PST | Flash Flood Warning | STO | Sacramento, Solano, Yolo | 4 hr |
| Jan 22, 5:20 PM PST | Flash Flood Warning | STO | Amador, El Dorado | 4 hr |
| Jan 22, 5:20 PM PST | Flash Flood Warning | STO | Nevada | 4 hr |
| Jan 22, 6:00 PM PST | Flash Flood Warning | MTR | Napa, Sonoma | 3 hr |
| Jan 22, 6:00 PM PST | Flash Flood Warning | MTR | Marin | 3 hr |
| Jan 22, 9:00 PM PST | Flash Flood Warning | MTR | Santa Cruz | 4 hr |
| Jan 22, 11:49 PM PST | Flash Flood Warning | STO | Yuba | 6 hr |
| Jan 24, 5:18 PM PST | Flash Flood Warning | HNX | Tulare | 6 hr |
| Jan 25, 3:55 AM PST | Flash Flood Warning | STO | El Dorado | 9 hr |
| Jan 25, 4:00 AM PST | Flash Flood Warning | MTR | Napa, Sonoma | 8 hr |
| Jan 25, 4:00 AM PST | Flash Flood Warning | MTR | City and County of San Francisco | 8 hr |
| Jan 25, 4:00 AM PST | Flash Flood Warning | MTR | Marin | 8 hr |
| Jan 25, 5:35 AM PST | Flash Flood Warning | MTR | San Mateo, Santa Clara, Santa Cruz | 6 hr |
| Jan 25, 5:35 AM PST | Flash Flood Warning | MTR | Alameda, Contra Costa | 6 hr |
| Jan 25, 7:15 AM PST | Flash Flood Warning | STO | Colusa, Lake, Yolo | 6 hr |
| Jan 26, 6:32 AM PST | Flash Flood Warning | MTR | Monterey, San Benito | 3 hr |
| Jan 26, 9:10 AM PST | Flash Flood Warning | MTR | Monterey, San Benito | 2 hr |
| Jan 26, 5:20 PM PST | Flash Flood Warning | VEF | San Bernardino | 55 min |
| Jan 26, 5:20 PM PST | Severe Thunderstorm Warning | VEF | San Bernardino | 55 min |
| Feb 17, 2:25 PM PST | Severe Thunderstorm Warning | HNX | Kern | 2 hr |
| Mar 22, 3:30 PM PST | Severe Thunderstorm Warning | HNX | Fresno | 45 min |
| Mar 22, 3:55 PM PST | Severe Thunderstorm Warning | HNX | Fresno | 65 min |
| Mar 22, 4:04 PM PST | Severe Thunderstorm Warning | HNX | Kern | 56 min |
| Mar 22, 4:09 PM PST | Tornado Warning | HNX | Kern | 36 min |
| Mar 22, 4:56 PM PST | Severe Thunderstorm Warning | HNX | Fresno | 64 min |
| Mar 22, 6:03 PM PST | Severe Thunderstorm Warning | HNX | Kings | 42 min |
| Mar 22, 6:45 PM PST | Severe Thunderstorm Warning | HNX | Kings | 45 min |
| Apr 2, 12:40 PM PST | Flash Flood Warning | SGX | San Diego | 60 min |
| Apr 2, 12:40 PM PST | Severe Thunderstorm Warning | SGX | San Diego | 60 min |
| May 18, 3:13 PM PDT | Severe Thunderstorm Warning | SGX | Riverside, San Diego | 62 min |
| May 19, 12:19 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 51 min |
| May 19, 1:26 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 64 min |
| May 19, 1:45 PM PDT | Severe Thunderstorm Warning | SGX | Riverside | 60 min |
| May 20, 12:15 PM PDT | Flash Flood Warning | VEF | San Bernardino | 90 min |
| May 20, 12:15 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 90 min |
| May 20, 1:05 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 55 min |
| May 20, 4:45 PM PDT | Flash Flood Warning | SGX | San Bernardino | 60 min |
| May 20, 4:45 PM PDT | Severe Thunderstorm Warning | SGX | San Bernardino | 60 min |
| Jun 5, 2:49 PM PDT | Flash Flood Warning | VEF | Inyo | 56 min |
| Jun 5, 2:49 PM PDT | Severe Thunderstorm Warning | VEF | Inyo | 56 min |
| Jun 5, 3:25 PM PDT | Severe Thunderstorm Warning | STO | Nevada, Placer | 50 min |
| Jun 5, 3:25 PM PDT | Severe Thunderstorm Warning | STO | Sierra | 50 min |
| Jun 6, 3:51 PM PDT | Severe Thunderstorm Warning | PSR | Imperial | 54 min |
| Jun 6, 4:16 PM PDT | Severe Thunderstorm Warning | PSR | Imperial | 59 min |
| Jun 6, 5:20 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 55 min |
| Jun 6, 6:17 PM PDT | Severe Thunderstorm Warning | SGX | San Bernardino | 43 min |
| Jun 6, 7:19 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 56 min |
| Jun 6, 7:20 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 25 min |
| Jun 9, 1:20 PM PDT | Severe Thunderstorm Warning | EKA | Trinity | 30 min |
| Jun 9, 1:55 PM PDT | Severe Thunderstorm Warning | EKA | Humboldt, Mendocino, Trinity | 55 min |
| Jun 9, 2:09 PM PDT | Severe Thunderstorm Warning | STO | Lake, Napa | 66 min |
| Jun 9, 4:02 PM PDT | Severe Thunderstorm Warning | STO | Stanislaus | 43 min |
| Jun 9, 6:09 PM PDT | Severe Thunderstorm Warning | STO | Butte | 66 min |
| Jun 11, 2:27 PM PDT | Severe Thunderstorm Warning | MFR | Siskiyou | 63 min |
| Jul 1, 7:03 PM PDT | Severe Thunderstorm Warning | EKA | Trinity | 42 min |
| Jul 1, 8:03 PM PDT | Severe Thunderstorm Warning | MFR | Siskiyou | 47 min |
| Jul 1, 8:18 PM PDT | Severe Thunderstorm Warning | MFR | Siskiyou | 32 min |
| Jul 16, 7:32 PM PDT | Severe Thunderstorm Warning | MFR | Siskiyou | 48 min |
| Jul 21, 3:55 PM PDT | Tornado Warning | LOX | Los Angeles | 35 min |
| Jul 22, 3:08 PM PDT | Severe Thunderstorm Warning | PSR | Imperial | 92 min |
| Jul 22, 4:14 PM PDT | Severe Thunderstorm Warning | PSR | Imperial | 71 min |
| Jul 22, 4:18 PM PDT | Flash Flood Warning | SGX | San Diego | 57 min |
| Jul 22, 4:18 PM PDT | Severe Thunderstorm Warning | SGX | San Diego | 57 min |
| Jul 22, 5:26 PM PDT | Flash Flood Warning | SGX | San Diego | 49 min |
| Jul 22, 5:26 PM PDT | Severe Thunderstorm Warning | SGX | San Diego | 49 min |
| Jul 22, 6:03 PM PDT | Severe Thunderstorm Warning | PSR | Imperial | 62 min |
| Jul 22, 7:02 PM PDT | Flash Flood Warning | PSR | Riverside | 78 min |
| Jul 22, 7:02 PM PDT | Severe Thunderstorm Warning | PSR | Riverside | 78 min |
| Jul 22, 8:01 PM PDT | Severe Thunderstorm Warning | PSR | Riverside | 74 min |
| Jul 22, 8:26 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 49 min |
| Jul 23, 2:55 PM PDT | Flash Flood Warning | VEF | San Bernardino | 65 min |
| Jul 23, 2:55 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 65 min |
| Jul 23, 3:50 PM PDT | Flash Flood Warning | LOX | Santa Barbara | 70 min |
| Jul 23, 3:51 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 49 min |
| Jul 23, 4:54 PM PDT | Flash Flood Warning | LOX | Santa Barbara | 66 min |
| Jul 23, 6:00 PM PDT | Flash Flood Warning | LOX | Santa Barbara | 90 min |
| Jul 26, 2:05 PM PDT | Flash Flood Warning | REV | Sierra | 55 min |
| Jul 26, 2:05 PM PDT | Severe Thunderstorm Warning | REV | Sierra | 55 min |
| Jul 26, 4:10 PM PDT | Flash Flood Warning | REV | Lassen | 55 min |
| Jul 26, 4:10 PM PDT | Severe Thunderstorm Warning | REV | Lassen | 55 min |
| Jul 26, 4:45 PM PDT | Flash Flood Warning | REV | Lassen | 60 min |
| Jul 26, 4:45 PM PDT | Severe Thunderstorm Warning | REV | Lassen | 60 min |
| Jul 26, 4:50 PM PDT | Severe Thunderstorm Warning | MFR | Siskiyou | 55 min |
| Jul 26, 5:38 PM PDT | Flash Flood Warning | MFR | Siskiyou | 82 min |
| Jul 26, 5:38 PM PDT | Severe Thunderstorm Warning | MFR | Siskiyou | 82 min |
| Jul 26, 6:58 PM PDT | Flash Flood Warning | MFR | Siskiyou | 92 min |
| Jul 26, 6:58 PM PDT | Severe Thunderstorm Warning | MFR | Siskiyou | 92 min |
| Jul 27, 7:44 PM PDT | Severe Thunderstorm Warning | PSR | Riverside | 46 min |
| Jul 28, 1:05 AM PDT | Flash Flood Warning | VEF | San Bernardino | 55 min |
| Jul 28, 1:05 AM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 55 min |
| Jul 28, 1:55 PM PDT | Severe Thunderstorm Warning | STO | Nevada, Sierra | 30 min |
| Jul 28, 4:49 PM PDT | Severe Thunderstorm Warning | MFR | Siskiyou | 56 min |
| Jul 30, 3:23 PM PDT | Severe Thunderstorm Warning | REV | Lassen | 62 min |
| Jul 30, 7:00 PM PDT | Severe Thunderstorm Warning | MFR | Siskiyou | 30 min |
| Aug 3, 2:56 PM PDT | Flash Flood Warning | VEF | San Bernardino | 64 min |
| Aug 3, 2:56 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 64 min |
| Aug 3, 3:00 PM PDT | Flash Flood Warning | SGX | San Diego | 60 min |
| Aug 3, 3:00 PM PDT | Severe Thunderstorm Warning | SGX | San Diego | 60 min |
| Aug 3, 4:00 PM PDT | Flash Flood Warning | VEF | San Bernardino | 60 min |
| Aug 3, 4:00 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 60 min |
| Aug 3, 4:29 PM PDT | Flash Flood Warning | SGX | San Diego | 61 min |
| Aug 3, 4:29 PM PDT | Severe Thunderstorm Warning | SGX | San Diego | 61 min |
| Aug 3, 4:59 PM PDT | Flash Flood Warning | VEF | San Bernardino | 31 min |
| Aug 3, 4:59 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 31 min |
| Aug 6, 1:32 PM PDT | Flash Flood Warning | SGX | San Diego | 43 min |
| Aug 6, 1:32 PM PDT | Severe Thunderstorm Warning | SGX | San Diego | 43 min |
| Aug 7, 5:28 PM PDT | Tornado Warning | VEF | San Bernardino | 62 min |
| Aug 7, 6:33 PM PDT | Flash Flood Warning | VEF | San Bernardino | 117 min |
| Aug 7, 6:33 PM PDT | Tornado Warning | VEF | San Bernardino | 117 min |
| Aug 8, 2:11 PM PDT | Flash Flood Warning | VEF | San Bernardino | 64 min |
| Aug 8, 2:11 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 64 min |
| Aug 9, 3:50 PM PDT | Flash Flood Warning | VEF | San Bernardino | 115 min |
| Aug 9, 3:50 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 115 min |
| Aug 16, 5:33 PM PDT | Flash Flood Warning | VEF | San Bernardino | 57 min |
| Aug 16, 5:33 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 57 min |
| Sep 1, 2:12 PM PDT | Flash Flood Warning | VEF | San Bernardino | 58 min |
| Sep 1, 2:12 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 58 min |
| Sep 1, 3:08 PM PDT | Flash Flood Warning | VEF | San Bernardino | 67 min |
| Sep 1, 3:08 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 67 min |
| Sep 1, 4:15 PM PDT | Flash Flood Warning | VEF | San Bernardino | 60 min |
| Sep 1, 4:15 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 60 min |
| Sep 1, 5:50 PM PDT | Flash Flood Warning | VEF | San Bernardino | 115 min |
| Sep 2, 1:58 PM PDT | Flash Flood Warning | SGX | San Diego | 62 min |
| Sep 2, 1:58 PM PDT | Severe Thunderstorm Warning | SGX | San Diego | 62 min |
| Sep 2, 2:33 PM PDT | Flash Flood Warning | SGX | San Diego | 57 min |
| Sep 2, 2:33 PM PDT | Severe Thunderstorm Warning | SGX | San Diego | 57 min |
| Sep 2, 3:03 PM PDT | Flash Flood Warning | VEF | San Bernardino | 117 min |
| Sep 2, 3:03 PM PDT | Flash Flood Warning | VEF | Inyo | 117 min |
| Sep 2, 3:03 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 117 min |
| Sep 2, 3:03 PM PDT | Severe Thunderstorm Warning | VEF | Inyo | 117 min |
| Sep 2, 3:35 PM PDT | Flash Flood Warning | SGX | Riverside | 55 min |
| Sep 2, 3:35 PM PDT | Severe Thunderstorm Warning | SGX | Riverside | 55 min |
| Sep 2, 3:47 PM PDT | Severe Thunderstorm Warning | HNX | Kern | 58 min |
| Sep 2, 4:05 PM PDT | Flash Flood Warning | LOX | Los Angeles | 55 min |
| Sep 2, 4:05 PM PDT | Severe Thunderstorm Warning | LOX | Los Angeles | 55 min |
| Sep 2, 4:13 PM PDT | Flash Flood Warning | SGX | San Bernardino | 62 min |
| Sep 2, 4:13 PM PDT | Severe Thunderstorm Warning | SGX | San Bernardino | 62 min |
| Sep 2, 5:28 PM PDT | Flash Flood Warning | VEF | San Bernardino | 2 hr |
| Sep 2, 5:28 PM PDT | Flash Flood Warning | VEF | Inyo | 2 hr |
| Sep 2, 5:28 PM PDT | Severe Thunderstorm Warning | VEF | Inyo | 2 hr |
| Sep 2, 5:28 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 2 hr |
| Sep 2, 5:40 PM PDT | Flash Flood Warning | SGX | San Bernardino | 65 min |
| Sep 2, 5:40 PM PDT | Severe Thunderstorm Warning | SGX | San Bernardino | 65 min |
| Sep 2, 5:49 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 56 min |
| Sep 2, 6:02 PM PDT | Severe Thunderstorm Warning | HNX | Kern | 28 min |
| Sep 2, 6:25 PM PDT | Flash Flood Warning | PSR | Riverside | 60 min |
| Sep 2, 6:25 PM PDT | Severe Thunderstorm Warning | PSR | Riverside | 60 min |
| Sep 2, 6:43 PM PDT | Flash Flood Warning | VEF | Inyo | 77 min |
| Sep 2, 6:43 PM PDT | Flash Flood Warning | VEF | San Bernardino | 77 min |
| Sep 2, 6:43 PM PDT | Severe Thunderstorm Warning | VEF | Inyo | 77 min |
| Sep 2, 6:43 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 77 min |
| Sep 2, 7:22 PM PDT | Flash Flood Warning | PSR | Riverside | 58 min |
| Sep 2, 7:22 PM PDT | Severe Thunderstorm Warning | PSR | Riverside | 58 min |
| Sep 2, 8:54 PM PDT | Severe Thunderstorm Warning | HNX | Kern | 36 min |
| Sep 3, 12:10 PM PDT | Flash Flood Warning | VEF | Inyo | 2 hr |
| Sep 3, 2:25 PM PDT | Flash Flood Warning | VEF | San Bernardino | 65 min |
| Sep 3, 2:25 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 65 min |
| Sep 3, 4:41 PM PDT | Flash Flood Warning | PSR | Riverside | 94 min |
| Sep 3, 5:02 PM PDT | Flash Flood Warning | VEF | San Bernardino | 118 min |
| Sep 3, 5:02 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 118 min |
| Sep 3, 6:34 PM PDT | Flash Flood Warning | HNX | Kern | 116 min |
| Sep 3, 7:20 PM PDT | Flash Flood Warning | SGX | San Bernardino | 55 min |
| Sep 3, 7:41 PM PDT | Severe Thunderstorm Warning | HNX | Kern | 49 min |
| Sep 3, 8:23 PM PDT | Flash Flood Warning | HNX | Kern | 67 min |
| Sep 4, 3:45 PM PDT | Flash Flood Warning | SGX | Riverside | 30 min |
| Sep 4, 3:45 PM PDT | Severe Thunderstorm Warning | SGX | Riverside | 30 min |
| Sep 4, 4:22 PM PDT | Flash Flood Warning | SGX | Riverside | 38 min |
| Sep 4, 4:22 PM PDT | Severe Thunderstorm Warning | SGX | Riverside | 38 min |
| Sep 4, 5:30 PM PDT | Flash Flood Warning | SGX | San Bernardino | 30 min |
| Sep 4, 5:30 PM PDT | Severe Thunderstorm Warning | SGX | San Bernardino | 30 min |
| Sep 4, 5:58 PM PDT | Severe Thunderstorm Warning | HNX | Kern | 62 min |
| Sep 4, 6:02 PM PDT | Flash Flood Warning | SGX | San Bernardino | 28 min |
| Sep 4, 6:02 PM PDT | Severe Thunderstorm Warning | SGX | San Bernardino | 28 min |
| Sep 4, 6:30 PM PDT | Flash Flood Warning | SGX | San Bernardino | 30 min |
| Sep 5, 1:17 PM PDT | Flash Flood Warning | SGX | San Diego | 58 min |
| Sep 5, 1:17 PM PDT | Severe Thunderstorm Warning | SGX | San Diego | 58 min |
| Sep 5, 2:12 PM PDT | Flash Flood Warning | SGX | San Diego | 63 min |
| Sep 5, 2:12 PM PDT | Severe Thunderstorm Warning | SGX | San Diego | 63 min |
| Sep 5, 2:24 PM PDT | Flash Flood Warning | SGX | Riverside | 66 min |
| Sep 5, 2:24 PM PDT | Severe Thunderstorm Warning | SGX | Riverside | 66 min |
| Sep 5, 3:15 PM PDT | Flash Flood Warning | SGX | San Diego | 60 min |
| Sep 5, 3:15 PM PDT | Severe Thunderstorm Warning | SGX | San Diego | 60 min |
| Sep 5, 3:27 PM PDT | Flash Flood Warning | SGX | Riverside | 63 min |
| Sep 5, 3:27 PM PDT | Severe Thunderstorm Warning | SGX | Riverside | 63 min |
| Sep 5, 4:04 PM PDT | Severe Thunderstorm Warning | PSR | Imperial | 61 min |
| Sep 5, 4:14 PM PDT | Flash Flood Warning | SGX | San Diego | 61 min |
| Sep 5, 4:14 PM PDT | Severe Thunderstorm Warning | SGX | San Diego | 61 min |
| Sep 5, 5:45 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 60 min |
| Sep 5, 6:37 PM PDT | Severe Thunderstorm Warning | PSR | Imperial | 68 min |
| Sep 5, 7:10 PM PDT | Flash Flood Warning | VEF | San Bernardino | 65 min |
| Sep 5, 7:10 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 65 min |
| Sep 14, 3:00 PM PDT | Severe Thunderstorm Warning | STO | Butte, Tehama | 45 min |
| Sep 14, 3:38 PM PDT | Severe Thunderstorm Warning | PSR | Imperial | 47 min |
| Sep 14, 4:43 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 62 min |
| Sep 24, 6:45 PM PDT | Flash Flood Warning | PSR | Imperial | 3 hr |
| Sep 25, 11:02 AM PDT | Flash Flood Warning | PSR | Imperial | 3 hr |
| Oct 7, 8:06 AM PDT | Flash Flood Warning | SGX | San Bernardino | 2 hr |
| Nov 13, 2:23 PM PST | Severe Thunderstorm Warning | STO | San Joaquin | 47 min |
| Nov 13, 2:35 PM PST | Tornado Warning | STO | San Joaquin, Stanislaus | 45 min |
| Nov 13, 2:55 PM PST | Severe Thunderstorm Warning | HNX | Merced | 35 min |
| Nov 13, 4:36 PM PST | Flash Flood Warning | SGX | San Bernardino | 2 hr |
| Nov 13, 4:40 PM PST | Severe Thunderstorm Warning | STO | Stanislaus | 30 min |
| Nov 26, 3:13 AM PST | Severe Thunderstorm Warning | LOX | San Luis Obispo, Santa Barbara | 47 min |
| Nov 26, 4:00 AM PST | Severe Thunderstorm Warning | LOX | San Luis Obispo, Santa Barbara | 60 min |
| Nov 26, 5:00 AM PST | Severe Thunderstorm Warning | LOX | Santa Barbara | 60 min |
| Nov 26, 9:20 AM PST | Severe Thunderstorm Warning | LOX | Los Angeles | 70 min |
| Nov 26, 9:40 AM PST | Severe Thunderstorm Warning | SGX | Orange, San Bernardino | 2 hr |
| Nov 30, 8:12 AM PST | Severe Thunderstorm Warning | SGX | Orange | 63 min |
| Nov 30, 11:32 AM PST | Flash Flood Warning | SGX | San Diego | 58 min |
| Dec 6, 2:18 AM PST | Flash Flood Warning | LOX | Santa Barbara | 57 min |
| Dec 6, 2:18 AM PST | Severe Thunderstorm Warning | LOX | Santa Barbara | 57 min |
| Dec 6, 2:30 AM PST | Flash Flood Warning | LOX | Ventura | 60 min |
| Dec 6, 2:30 AM PST | Severe Thunderstorm Warning | LOX | Ventura | 60 min |
| Dec 6, 3:40 AM PST | Flash Flood Warning | LOX | Los Angeles | 65 min |
| Dec 6, 3:40 AM PST | Severe Thunderstorm Warning | LOX | Los Angeles | 65 min |
| Dec 6, 3:51 AM PST | Severe Thunderstorm Warning | SGX | Orange | 69 min |
| Dec 6, 4:28 AM PST | Flash Flood Warning | SGX | Orange | 2 hr |
| Dec 6, 6:31 AM PST | Flash Flood Warning | SGX | Orange | 59 min |
| Dec 6, 7:30 AM PST | Flash Flood Warning | SGX | Orange | 90 min |
| Dec 6, 9:00 AM PST | Flash Flood Warning | SGX | Orange | 3 hr |
| Dec 6, 9:05 AM PST | Flash Flood Warning | SGX | Riverside | 3 hr |
| Dec 6, 9:05 AM PST | Flash Flood Warning | SGX | San Bernardino | 3 hr |
| Dec 6, 9:45 AM PST | Flash Flood Warning | SGX | Orange, Riverside | 60 min |
| Dec 6, 9:45 AM PST | Severe Thunderstorm Warning | SGX | Orange, Riverside | 60 min |
| Dec 6, 11:59 AM PST | Flash Flood Warning | SGX | Orange | 61 min |
| Dec 6, 1:11 PM PST | Flash Flood Warning | SGX | Orange, Riverside, San Diego | 2 hr |
| Dec 6, 1:11 PM PST | Flash Flood Warning | SGX | San Bernardino | 2 hr |
| Dec 6, 3:00 PM PST | Flash Flood Warning | SGX | Orange, San Bernardino | 5 hr |
| Dec 6, 3:00 PM PST | Flash Flood Warning | SGX | Riverside, San Diego | 5 hr |
| Dec 6, 6:24 PM PST | Flash Flood Warning | SGX | San Diego | 66 min |
| Dec 6, 7:30 PM PST | Flash Flood Warning | SGX | San Diego | 60 min |
| Dec 6, 7:55 PM PST | Flash Flood Warning | SGX | Orange, San Bernardino | 2 hr |
| Dec 6, 7:55 PM PST | Flash Flood Warning | SGX | Riverside, San Diego | 2 hr |
| Dec 6, 9:00 PM PST | Flash Flood Warning | LOX | Los Angeles | 2 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Severe Thunderstorm Warning | 127 |
| Tornado Warning | 5 |
| Flooding | |
| Flash Flood Warning | 158 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- San Bernardino County73
- San Diego County31
- Riverside County29
- Orange County15
- Santa Cruz County13
- San Mateo County12
- Santa Clara County11
- Kern County11
- Siskiyou County11
- Imperial County10
- Santa Barbara County9
- Inyo County9
- Contra Costa County8
- Los Angeles County8
- Napa County7
- Alameda County7
- Monterey County7
- Fresno County6
- Sonoma County5
- Marin County5
- Lassen County5
- San Joaquin County4
- Sierra County4
- San Luis Obispo County3
- Sacramento County3
- Tulare County3
- Yuba County3
- Sutter County3
- Butte County3
- Nevada County3
- Trinity County3
- Stanislaus County3
- Solano County2
- Mariposa County2
- Madera County2
- Mendocino County2
- Colusa County2
- City and County of San Francisco2
- Placer County2
- Yolo County2
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive19961998
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.