Weather alerts in California, 2003
262 weather alerts in 2003, 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 2003. Tap one for its archive.
- Alerts
- 262
- Warnings
- 232
- Watches
- 2
- Advisories
- 0
- Busiest month
- August83 alerts
- Busiest day
- September 4, 200321 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 |
|---|---|---|---|---|
| Feb 13, 4:07 PM PST | Tornado Warning | HNX | Fresno | 23 min |
| Feb 25, 10:54 AM PST | Flash Flood Warning | SGX | Orange | 2 hr |
| Feb 25, 2:42 PM PST | Special Marine Warning | SGX | 78 min | |
| Feb 25, 4:00 PM PST | Special Marine Warning | SGX | 60 min | |
| Feb 25, 5:00 PM PST | Special Marine Warning | SGX | 60 min | |
| Mar 13, 3:21 PM PST | Special Marine Warning | EKA | 54 min | |
| Mar 13, 4:14 PM PST | Special Marine Warning | EKA | 61 min | |
| Mar 14, 2:20 AM PST | Severe Thunderstorm Warning | STO | Butte, Sutter | 30 min |
| Mar 14, 2:54 AM PST | Severe Thunderstorm Warning | STO | Butte | 21 min |
| Mar 14, 8:42 PM PST | Special Marine Warning | EKA | 63 min | |
| Mar 15, 4:47 AM PST | Severe Thunderstorm Warning | STO | Sacramento, Solano, Sutter, Yolo, Yuba | 43 min |
| Mar 15, 1:06 PM PST | Severe Thunderstorm Warning | HNX | Tulare | 24 min |
| Mar 15, 1:11 PM PST | Mesoscale Discussion | SPC | Tulare | 2 hr |
| Mar 15, 1:18 PM PST | Severe Thunderstorm Warning | STO | Tehama | 27 min |
| Mar 16, 1:48 PM PST | Severe Thunderstorm Warning | STO | Glenn, Tehama | 42 min |
| Mar 16, 2:12 PM PST | Severe Thunderstorm Warning | STO | Solano | 43 min |
| Mar 16, 2:44 PM PST | Severe Thunderstorm Warning | STO | Colusa, Lake | 46 min |
| Mar 16, 2:45 PM PST | Special Marine Warning | MTR | 30 min | |
| Mar 16, 3:25 PM PST | Tornado Warning | STO | Colusa | 45 min |
| Mar 16, 3:26 PM PST | Severe Thunderstorm Warning | MTR | Napa | 34 min |
| Apr 1, 3:34 PM PST | Mesoscale Discussion | SPC | Butte, Glenn, Shasta, Tehama | 116 min |
| Apr 13, 10:56 AM PDT | Mesoscale Discussion | SPC | Colusa, Merced, Sacramento, San Joaquin, Stanislaus, Sutter and 2 more | 94 min |
| Apr 21, 8:33 AM PDT | Special Marine Warning | MTR | 27 min | |
| Apr 21, 8:33 AM PDT | Special Marine Warning | MTR | 27 min | |
| Apr 21, 11:48 AM PDT | Mesoscale Discussion | SPC | Butte, Colusa, Glenn, Merced, Sacramento, San Joaquin and 5 more | 3 hr |
| Apr 21, 3:00 PM PDT | Special Marine Warning | MTR | 45 min | |
| Apr 21, 3:00 PM PDT | Special Marine Warning | MTR | 45 min | |
| Apr 25, 1:15 PM PDT | Mesoscale Discussion | SPC | Butte, Colusa, Glenn, Lake, Shasta, Sutter and 4 more | 3 hr |
| Apr 28, 4:39 PM PDT | Severe Thunderstorm Warning | STO | Sacramento | 36 min |
| Apr 29, 7:00 PM PDT | Severe Thunderstorm Warning | STO | Tehama | 30 min |
| Apr 29, 7:33 PM PDT | Severe Thunderstorm Warning | STO | Tehama | 27 min |
| Apr 29, 7:43 PM PDT | Severe Thunderstorm Warning | STO | Sacramento | 47 min |
| May 3, 5:04 PM PDT | Severe Thunderstorm Warning | STO | Tehama | 41 min |
| May 3, 5:45 PM PDT | Severe Thunderstorm Warning | STO | Tehama | 45 min |
| May 7, 6:57 PM PDT | Severe Thunderstorm Warning | STO | Tehama | 43 min |
| May 7, 7:42 PM PDT | Severe Thunderstorm Warning | STO | Tehama | 33 min |
| May 7, 7:44 PM PDT | Severe Thunderstorm Warning | STO | Tehama | 31 min |
| May 8, 5:59 PM PDT | Tornado Warning | STO | Sacramento | 31 min |
| May 8, 6:33 PM PDT | Severe Thunderstorm Warning | STO | Sacramento, Yolo | 27 min |
| May 29, 1:41 PM PDT | Mesoscale Discussion | SPC | Alpine, Butte, El Dorado, Lassen, Modoc, Nevada and 7 more | 3 hr |
| May 29, 4:49 PM PDT | Severe Thunderstorm Warning | EKA | Trinity | 41 min |
| May 29, 4:55 PM PDT | Mesoscale Discussion | SPC | Lassen, Modoc, Plumas, Shasta, Siskiyou, Tehama and 1 more | 95 min |
| May 29, 5:18 PM PDT | Severe Thunderstorm Warning | EKA | Humboldt, Trinity | 42 min |
| May 29, 5:30 PM PDT | Severe Thunderstorm Watch | SPC | Humboldt, Lassen, Modoc, Shasta, Siskiyou, Tehama and 1 more | 6 hr |
| May 29, 7:02 PM PDT | Severe Thunderstorm Warning | EKA | Trinity | 28 min |
| May 29, 9:07 PM PDT | Mesoscale Discussion | SPC | Lassen, Modoc, Shasta, Siskiyou, Tehama, Trinity | 53 min |
| May 30, 3:42 AM PDT | Mesoscale Discussion | SPC | Del Norte, Siskiyou | 63 min |
| Jun 6, 3:27 PM PDT | Mesoscale Discussion | SPC | San Bernardino | 3 hr |
| Jun 17, 2:59 PM PDT | Severe Thunderstorm Warning | STO | Alpine, Calaveras, Tuolumne | 61 min |
| Jun 24, 8:43 PM PDT | Special Marine Warning | EKA | 2 hr | |
| Jul 22, 2:26 PM PDT | Severe Thunderstorm Warning | STO | Tuolumne | 19 min |
| Jul 22, 2:33 PM PDT | Severe Thunderstorm Warning | STO | Tuolumne | 12 min |
| Jul 22, 2:45 PM PDT | Severe Thunderstorm Warning | STO | Tuolumne | 30 min |
| Jul 22, 3:35 PM PDT | Severe Thunderstorm Warning | STO | Tuolumne | 25 min |
| Jul 22, 3:49 PM PDT | Severe Thunderstorm Warning | REV | Sierra | 26 min |
| Jul 22, 4:23 PM PDT | Severe Thunderstorm Warning | REV | Plumas | 37 min |
| Jul 22, 5:26 PM PDT | Severe Thunderstorm Warning | REV | Plumas, Sierra | 34 min |
| Jul 22, 6:40 PM PDT | Flash Flood Warning | REV | Lassen | 35 min |
| Jul 23, 2:39 PM PDT | Severe Thunderstorm Warning | REV | Nevada | 21 min |
| Jul 23, 2:56 PM PDT | Severe Thunderstorm Warning | REV | Nevada | 34 min |
| Jul 23, 3:00 PM PDT | Flash Flood Warning | REV | Nevada | 2 hr |
| Jul 23, 3:07 PM PDT | Severe Thunderstorm Warning | REV | Lassen | 33 min |
| Jul 23, 3:20 PM PDT | Severe Thunderstorm Warning | REV | Placer | 25 min |
| Jul 23, 4:23 PM PDT | Severe Thunderstorm Warning | MFR | Modoc, Siskiyou | 22 min |
| Jul 23, 4:39 PM PDT | Severe Thunderstorm Warning | REV | Lassen | 26 min |
| Jul 23, 4:46 PM PDT | Flash Flood Warning | REV | Lassen | 119 min |
| Jul 23, 4:59 PM PDT | Severe Thunderstorm Warning | REV | Lassen | 31 min |
| Jul 23, 5:34 PM PDT | Severe Thunderstorm Warning | MFR | Siskiyou | 56 min |
| Jul 23, 8:52 PM PDT | Flash Flood Warning | MFR | Siskiyou | 3 hr |
| Jul 24, 2:21 PM PDT | Special Marine Warning | MTR | 39 min | |
| Jul 26, 3:00 PM PDT | Flash Flood Warning | LOX | Los Angeles | 90 min |
| Jul 26, 4:30 PM PDT | Flash Flood Warning | LOX | Los Angeles | 90 min |
| Jul 29, 3:18 PM PDT | Severe Thunderstorm Warning | STO | Tuolumne | 57 min |
| Jul 29, 4:36 PM PDT | Severe Thunderstorm Warning | LOX | Los Angeles | 39 min |
| Jul 29, 5:36 PM PDT | Severe Thunderstorm Warning | LOX | Los Angeles | 39 min |
| Jul 29, 6:24 PM PDT | Mesoscale Discussion | SPC | Imperial | 2 hr |
| Jul 30, 2:54 PM PDT | Severe Thunderstorm Warning | STO | Plumas | 46 min |
| Jul 30, 3:56 PM PDT | Severe Thunderstorm Warning | STO | Plumas | 49 min |
| Jul 31, 3:41 AM PDT | Flash Flood Warning | VEF | Inyo | 79 min |
| Jul 31, 10:09 AM PDT | Flash Flood Warning | VEF | Inyo | 3 hr |
| Jul 31, 1:53 PM PDT | Severe Thunderstorm Warning | REV | El Dorado, Placer | 22 min |
| Jul 31, 2:20 PM PDT | Flash Flood Warning | VEF | San Bernardino | 115 min |
| Jul 31, 2:59 PM PDT | Severe Thunderstorm Warning | REV | Nevada, Placer, Sierra | 16 min |
| Jul 31, 3:12 PM PDT | Severe Thunderstorm Warning | REV | Nevada, Sierra | 18 min |
| Jul 31, 3:27 PM PDT | Severe Thunderstorm Warning | REV | Nevada, Sierra | 33 min |
| Jul 31, 3:28 PM PDT | Flash Flood Warning | REV | Nevada, Sierra | 92 min |
| Jul 31, 3:39 PM PDT | Flash Flood Warning | LOX | Santa Barbara | 96 min |
| Jul 31, 3:39 PM PDT | Tornado Warning | REV | Sierra | 21 min |
| Jul 31, 4:00 PM PDT | Severe Thunderstorm Warning | HNX | Kern | 30 min |
| Jul 31, 4:00 PM PDT | Severe Thunderstorm Warning | REV | Plumas, Sierra | 25 min |
| Jul 31, 4:13 PM PDT | Mesoscale Discussion | SPC | Alpine, Amador, Calaveras, El Dorado, Fresno, Kern and 10 more | 2 hr |
| Aug 1, 12:55 PM PDT | Flash Flood Warning | SGX | Riverside | 3 hr |
| Aug 1, 2:30 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Aug 1, 2:40 PM PDT | Flash Flood Warning | PSR | Riverside | 2 hr |
| Aug 1, 3:20 PM PDT | Flash Flood Warning | SGX | Riverside, San Diego | 70 min |
| Aug 1, 4:55 PM PDT | Flash Flood Warning | PSR | Riverside | 50 min |
| Aug 1, 5:40 PM PDT | Flash Flood Warning | HNX | Kern | 3 hr |
| Aug 2, 4:17 PM PDT | Flash Flood Warning | HNX | Fresno, Tulare | 3 hr |
| Aug 3, 8:37 PM PDT | Flash Flood Warning | EKA | Trinity | 113 min |
| Aug 4, 2:52 PM PDT | Severe Thunderstorm Warning | EKA | Humboldt, Trinity | 23 min |
| Aug 4, 3:34 PM PDT | Severe Thunderstorm Warning | EKA | Humboldt, Trinity | 41 min |
| Aug 4, 4:12 PM PDT | Mesoscale Discussion | SPC | Lassen, Modoc, Shasta, Siskiyou, Tehama, Trinity | 2 hr |
| Aug 4, 4:14 PM PDT | Severe Thunderstorm Warning | EKA | Humboldt, Trinity | 31 min |
| Aug 4, 5:03 PM PDT | Severe Thunderstorm Warning | EKA | Humboldt, Trinity | 27 min |
| Aug 4, 8:36 PM PDT | Special Marine Warning | EKA | 24 min | |
| Aug 4, 9:38 PM PDT | Severe Thunderstorm Warning | EKA | Humboldt | 37 min |
| Aug 5, 12:07 AM PDT | Severe Thunderstorm Warning | EKA | Humboldt | 23 min |
| Aug 6, 10:50 AM PDT | Mesoscale Discussion | SPC | Siskiyou | 2 hr |
| Aug 12, 5:39 PM PDT | Severe Thunderstorm Warning | PSR | Imperial | 36 min |
| Aug 14, 1:35 PM PDT | Flash Flood Warning | SGX | San Diego | 55 min |
| Aug 14, 3:29 PM PDT | Flash Flood Warning | SGX | San Diego | 61 min |
| Aug 14, 4:42 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Aug 19, 4:26 PM PDT | Severe Thunderstorm Warning | VEF | Inyo, San Bernardino | 49 min |
| Aug 19, 4:29 PM PDT | Flash Flood Warning | VEF | Inyo, San Bernardino | 2 hr |
| Aug 20, 1:16 AM PDT | Flash Flood Warning | VEF | Inyo | 119 min |
| Aug 20, 3:25 AM PDT | Flash Flood Warning | VEF | Inyo | 2 hr |
| Aug 20, 12:27 PM PDT | Flash Flood Warning | SGX | San Bernardino | 2 hr |
| Aug 20, 1:04 PM PDT | Flash Flood Warning | SGX | Riverside, San Diego | 86 min |
| Aug 20, 2:30 PM PDT | Flash Flood Warning | SGX | Riverside, San Bernardino, San Diego | 2 hr |
| Aug 20, 2:55 PM PDT | Flash Flood Warning | VEF | San Bernardino | 2 hr |
| Aug 20, 3:09 PM PDT | Severe Thunderstorm Warning | SGX | San Diego | 51 min |
| Aug 20, 3:21 PM PDT | Severe Thunderstorm Warning | PSR | Riverside | 54 min |
| Aug 20, 3:53 PM PDT | Flash Flood Warning | LOX | Los Angeles | 67 min |
| Aug 20, 4:24 PM PDT | Severe Thunderstorm Warning | PSR | Riverside | 51 min |
| Aug 20, 4:49 PM PDT | Flash Flood Warning | HNX | Kern | 3 hr |
| Aug 20, 4:56 PM PDT | Flash Flood Warning | LOX | Los Angeles | 64 min |
| Aug 20, 5:00 PM PDT | Flash Flood Warning | VEF | San Bernardino | 2 hr |
| Aug 20, 5:01 PM PDT | Flash Flood Warning | PSR | Imperial | 89 min |
| Aug 20, 5:04 PM PDT | Mesoscale Discussion | SPC | Imperial, Riverside | 2 hr |
| Aug 20, 5:23 PM PDT | Severe Thunderstorm Warning | PSR | Imperial | 52 min |
| Aug 20, 5:57 PM PDT | Flash Flood Warning | LOX | Los Angeles | 63 min |
| Aug 20, 7:31 PM PDT | Flash Flood Warning | VEF | San Bernardino | 119 min |
| Aug 20, 8:42 PM PDT | Flash Flood Warning | VEF | Inyo | 93 min |
| Aug 20, 9:22 PM PDT | Severe Thunderstorm Warning | HNX | Tulare | 28 min |
| Aug 24, 1:32 AM PDT | Severe Thunderstorm Warning | PSR | Imperial | 43 min |
| Aug 24, 5:10 AM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Aug 24, 6:10 AM PDT | Flash Flood Warning | PSR | Riverside | 95 min |
| Aug 24, 7:51 AM PDT | Flash Flood Warning | PSR | Riverside | 24 min |
| Aug 24, 12:46 PM PDT | Mesoscale Discussion | SPC | San Diego | 3 hr |
| Aug 24, 1:08 PM PDT | Flash Flood Warning | SGX | San Diego | 112 min |
| Aug 24, 1:14 PM PDT | Severe Thunderstorm Warning | SGX | San Diego | 106 min |
| Aug 24, 2:22 PM PDT | Severe Thunderstorm Warning | SGX | Riverside | 98 min |
| Aug 24, 2:23 PM PDT | Flash Flood Warning | SGX | Riverside | 97 min |
| Aug 24, 2:39 PM PDT | Severe Thunderstorm Warning | SGX | Riverside | 81 min |
| Aug 25, 12:40 PM PDT | Flash Flood Warning | SGX | San Bernardino | 110 min |
| Aug 25, 12:48 PM PDT | Severe Thunderstorm Warning | SGX | San Bernardino | 102 min |
| Aug 25, 1:50 PM PDT | Severe Thunderstorm Warning | SGX | San Diego | 100 min |
| Aug 25, 2:03 PM PDT | Flash Flood Warning | SGX | San Diego | 117 min |
| Aug 25, 2:10 PM PDT | Flash Flood Warning | SGX | Riverside | 2 hr |
| Aug 25, 3:57 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 63 min |
| Aug 25, 4:52 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 38 min |
| Aug 25, 11:22 PM PDT | Special Marine Warning | MTR | 53 min | |
| Aug 25, 11:22 PM PDT | Special Marine Warning | MTR | 53 min | |
| Aug 25, 11:22 PM PDT | Special Marine Warning | MTR | 53 min | |
| Aug 25, 11:22 PM PDT | Special Marine Warning | MTR | 53 min | |
| Aug 26, 12:26 PM PDT | Mesoscale Discussion | SPC | Imperial, Riverside, San Bernardino | 2 hr |
| Aug 26, 1:07 PM PDT | Flash Flood Warning | SGX | San Bernardino | 113 min |
| Aug 26, 1:22 PM PDT | Flash Flood Warning | SGX | San Diego | 2 hr |
| Aug 26, 1:55 PM PDT | Severe Thunderstorm Watch | SPC | Imperial, Riverside, San Bernardino | 5 hr |
| Aug 26, 2:28 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Aug 26, 3:03 PM PDT | Flash Flood Warning | PSR | Riverside, San Bernardino | 117 min |
| Aug 26, 3:15 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 60 min |
| Aug 26, 4:06 PM PDT | Severe Thunderstorm Warning | PSR | Riverside | 54 min |
| Aug 26, 5:24 PM PDT | Flash Flood Warning | VEF | San Bernardino | 2 hr |
| Aug 27, 12:04 PM PDT | Flash Flood Warning | SGX | San Diego | 86 min |
| Aug 27, 12:05 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Aug 27, 12:33 PM PDT | Flash Flood Warning | PSR | Riverside, San Bernardino | 87 min |
| Aug 27, 1:25 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Aug 27, 2:00 PM PDT | Flash Flood Warning | PSR | Riverside, San Bernardino | 2 hr |
| Aug 27, 4:54 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 66 min |
| Aug 27, 5:15 PM PDT | Flash Flood Warning | SGX | San Diego | 45 min |
| Aug 27, 7:45 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Aug 27, 8:00 PM PDT | Flash Flood Warning | PSR | Riverside | 30 min |
| Aug 28, 11:47 AM PDT | Flash Flood Warning | SGX | San Diego | 103 min |
| Sep 1, 2:55 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Sep 2, 2:23 PM PDT | Flash Flood Warning | SGX | San Bernardino | 97 min |
| Sep 2, 2:27 PM PDT | Severe Thunderstorm Warning | PSR | Riverside, San Bernardino | 63 min |
| Sep 2, 2:27 PM PDT | Flash Flood Warning | VEF | San Bernardino | 2 hr |
| Sep 2, 2:38 PM PDT | Flash Flood Warning | SGX | Riverside | 82 min |
| Sep 2, 3:22 PM PDT | Flash Flood Warning | SGX | San Diego | 68 min |
| Sep 2, 4:28 PM PDT | Flash Flood Warning | SGX | San Diego | 62 min |
| Sep 2, 5:33 PM PDT | Severe Thunderstorm Warning | HNX | Kern | 42 min |
| Sep 3, 9:29 AM PDT | Special Marine Warning | EKA | 91 min | |
| Sep 3, 10:56 AM PDT | Special Marine Warning | EKA | 64 min | |
| Sep 3, 1:45 PM PDT | Flash Flood Warning | LOX | Los Angeles | 60 min |
| Sep 3, 3:53 PM PDT | Severe Thunderstorm Warning | HNX | Fresno | 22 min |
| Sep 3, 4:20 PM PDT | Severe Thunderstorm Warning | STO | El Dorado, Placer | 40 min |
| Sep 3, 5:49 PM PDT | Severe Thunderstorm Warning | HNX | Kern | 26 min |
| Sep 4, 12:40 PM PDT | Severe Thunderstorm Warning | SGX | San Diego | 50 min |
| Sep 4, 1:06 PM PDT | Flash Flood Warning | SGX | San Diego | 84 min |
| Sep 4, 1:17 PM PDT | Flash Flood Warning | SGX | Riverside | 88 min |
| Sep 4, 1:29 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Sep 4, 1:49 PM PDT | Severe Thunderstorm Warning | SGX | San Diego | 71 min |
| Sep 4, 1:58 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 62 min |
| Sep 4, 2:06 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Sep 4, 2:07 PM PDT | Severe Thunderstorm Warning | SGX | San Bernardino | 53 min |
| Sep 4, 2:08 PM PDT | Tornado Warning | SGX | San Bernardino | 37 min |
| Sep 4, 2:09 PM PDT | Flash Flood Warning | SGX | San Bernardino | 81 min |
| Sep 4, 2:24 PM PDT | Flash Flood Warning | SGX | San Diego | 96 min |
| Sep 4, 2:30 PM PDT | Flash Flood Warning | SGX | Riverside | 90 min |
| Sep 4, 3:01 PM PDT | Severe Thunderstorm Warning | REV | Lassen, Plumas | 29 min |
| Sep 4, 3:22 PM PDT | Severe Thunderstorm Warning | SGX | San Diego | 23 min |
| Sep 4, 3:29 PM PDT | Severe Thunderstorm Warning | EKA | Trinity | 31 min |
| Sep 4, 3:46 PM PDT | Severe Thunderstorm Warning | SGX | San Diego | 29 min |
| Sep 4, 3:59 PM PDT | Severe Thunderstorm Warning | PSR | Imperial | 61 min |
| Sep 4, 4:04 PM PDT | Flash Flood Warning | SGX | San Diego | 116 min |
| Sep 4, 4:15 PM PDT | Severe Thunderstorm Warning | SGX | San Diego | 45 min |
| Sep 4, 4:38 PM PDT | Severe Thunderstorm Warning | REV | Nevada, Sierra | 37 min |
| Sep 4, 5:00 PM PDT | Severe Thunderstorm Warning | PSR | Imperial | 60 min |
| Sep 4, 5:06 PM PDT | Severe Thunderstorm Warning | EKA | Trinity | 24 min |
| Sep 4, 5:19 PM PDT | Severe Thunderstorm Warning | REV | Plumas | 26 min |
| Sep 4, 5:20 PM PDT | Flash Flood Warning | SGX | San Diego | 100 min |
| Sep 4, 5:30 PM PDT | Severe Thunderstorm Warning | EKA | Trinity | 45 min |
| Sep 4, 5:31 PM PDT | Severe Thunderstorm Warning | PSR | Riverside | 59 min |
| Sep 4, 5:44 PM PDT | Flash Flood Warning | PSR | Imperial | 2 hr |
| Sep 4, 6:48 PM PDT | Severe Thunderstorm Warning | PSR | Riverside | 57 min |
| Sep 4, 8:20 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 55 min |
| Sep 4, 9:03 PM PDT | Severe Thunderstorm Warning | PSR | Riverside | 57 min |
| Sep 5, 1:30 PM PDT | Flash Flood Warning | SGX | Riverside | 90 min |
| Sep 5, 2:05 PM PDT | Flash Flood Warning | SGX | San Diego | 85 min |
| Oct 30, 11:45 AM PST | Special Marine Warning | SGX | 2 hr | |
| Oct 30, 12:15 PM PST | Special Marine Warning | SGX | 105 min | |
| Oct 31, 5:15 PM PST | Flash Flood Warning | LOX | Ventura | 2 hr |
| Oct 31, 7:06 PM PST | Flash Flood Warning | LOX | Ventura | 69 min |
| Nov 8, 10:50 AM PST | Mesoscale Discussion | SPC | Del Norte, Mendocino, Trinity | 2 hr |
| Nov 8, 2:03 PM PST | Mesoscale Discussion | SPC | Alameda, Colusa, Contra Costa, Glenn, Lake, Marin and 12 more | 2 hr |
| Nov 8, 4:30 PM PST | Mesoscale Discussion | SPC | Amador, El Dorado, Nevada, Placer, Plumas, Sierra | 4 hr |
| Nov 9, 6:20 AM PST | Severe Thunderstorm Warning | STO | Butte, Yuba | 25 min |
| Nov 9, 10:54 AM PST | Mesoscale Discussion | SPC | Alameda, Butte, Colusa, Contra Costa, Lake, Napa and 8 more | 3 hr |
| Nov 9, 12:39 PM PST | Tornado Warning | STO | Solano, Yolo | 31 min |
| Nov 9, 1:11 PM PST | Severe Thunderstorm Warning | STO | Sacramento, Solano, Yolo | 49 min |
| Nov 9, 1:21 PM PST | Severe Thunderstorm Warning | STO | Glenn | 39 min |
| Nov 9, 1:50 PM PST | Severe Thunderstorm Warning | STO | Butte, Glenn, Tehama | 55 min |
| Nov 9, 1:55 PM PST | Special Marine Warning | MTR | 35 min | |
| Nov 9, 2:02 PM PST | Severe Thunderstorm Warning | STO | Sacramento, Yolo | 43 min |
| Nov 9, 2:18 PM PST | Tornado Warning | STO | Glenn, Tehama | 27 min |
| Nov 9, 2:42 PM PST | Severe Thunderstorm Warning | STO | Sacramento, San Joaquin | 48 min |
| Nov 9, 2:48 PM PST | Severe Thunderstorm Warning | STO | Butte, Tehama | 32 min |
| Nov 9, 3:27 PM PST | Mesoscale Discussion | SPC | Alameda, Butte, Colusa, Contra Costa, Fresno, Glenn and 11 more | 2 hr |
| Nov 12, 12:15 AM PST | Flash Flood Warning | LOX | Ventura | 2 hr |
| Nov 12, 5:27 AM PST | Flash Flood Warning | LOX | Los Angeles | 2 hr |
| Nov 12, 9:35 AM PST | Flash Flood Warning | SGX | San Bernardino, San Diego | 2 hr |
| Nov 12, 3:42 PM PST | Flash Flood Warning | LOX | Los Angeles | 63 min |
| Nov 12, 4:43 PM PST | Flash Flood Warning | LOX | Los Angeles | 62 min |
| Nov 12, 5:43 PM PST | Flash Flood Warning | SGX | Orange, Riverside, San Bernardino | 77 min |
| Nov 12, 5:45 PM PST | Flash Flood Warning | LOX | Los Angeles | 105 min |
| Nov 12, 7:30 PM PST | Flash Flood Warning | LOX | Los Angeles | 2 hr |
| Nov 12, 9:30 PM PST | Flash Flood Warning | LOX | Los Angeles | 60 min |
| Dec 9, 10:02 PM PST | Special Marine Warning | MTR | 28 min | |
| Dec 9, 10:02 PM PST | Special Marine Warning | MTR | 28 min | |
| Dec 9, 10:54 PM PST | Special Marine Warning | MTR | 51 min | |
| Dec 9, 10:54 PM PST | Special Marine Warning | MTR | 51 min | |
| Dec 10, 12:01 AM PST | Mesoscale Discussion | SPC | Alpine, El Dorado, Placer, Tuolumne | 6 hr |
| Dec 14, 3:05 AM PST | Mesoscale Discussion | SPC | Amador, Calaveras, El Dorado, Mariposa, Nevada, Placer and 3 more | 5 hr |
| Dec 25, 3:59 AM PST | Mesoscale Discussion | SPC | Alpine, El Dorado, Tuolumne | 6 hr |
| Dec 25, 1:44 PM PST | Flash Flood Warning | SGX | San Bernardino | 4 hr |
| Dec 25, 5:45 PM PST | Flash Flood Warning | SGX | San Bernardino | 4 hr |
| Dec 28, 10:45 AM PST | Mesoscale Discussion | SPC | Lassen, Nevada, Plumas, Sierra, Siskiyou, Trinity | 6 hr |
| Dec 28, 6:15 PM PST | Mesoscale Discussion | SPC | Nevada, Plumas, Shasta, Sierra, Siskiyou, Tehama and 1 more | 6 hr |
| Dec 29, 9:38 AM PST | Mesoscale Discussion | SPC | Alpine, Amador, Calaveras, El Dorado, Mariposa, Nevada and 4 more | 6 hr |
| Dec 29, 11:06 AM PST | Flash Flood Warning | MTR | Napa | 54 min |
| Dec 29, 5:47 PM PST | Flash Flood Warning | MTR | Santa Cruz | 58 min |
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 | 104 |
| Tornado Warning | 7 |
| Severe Thunderstorm Watch | 2 |
| Mesoscale Discussion | 28 |
| Flooding | |
| Flash Flood Warning | 94 |
| Marine | |
| Special Marine Warning | 27 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- San Bernardino County44
- Riverside County31
- San Diego County28
- Tehama County21
- Trinity County19
- Sierra County16
- Nevada County15
- Plumas County15
- Los Angeles County14
- Sacramento County13
- Lassen County12
- Siskiyou County12
- Butte County11
- Yolo County11
- Tuolumne County11
- Imperial County11
- Placer County10
- Yuba County9
- Glenn County9
- El Dorado County9
- Sutter County8
- Solano County8
- Colusa County8
- Shasta County8
- Humboldt County8
- Inyo County7
- San Joaquin County6
- Alpine County6
- Modoc County6
- Kern County6
- Fresno County5
- Tulare County5
- Lake County4
- Napa County4
- Stanislaus County4
- Calaveras County4
- Amador County4
- Merced County3
- Mariposa County3
- Ventura County3
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20022004
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.