Alert archive / California / 2020
Weather alerts in California, August 2020
391 weather alerts in August 2020, 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 August 2020. Tap one for its archive.
- Alerts
- 391
- Warnings
- 114
- Watches
- 42
- Advisories
- 83
- Busiest day
- August 16, 202051 alerts
Over time
By day
Days in UTC, the clock the archive keeps.
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 |
|---|---|---|---|---|
| Aug 1, 2:01 AM PDT | Small Craft Advisory | MTR | 19 hr | |
| Aug 1, 2:01 AM PDT | Small Craft Advisory | MTR | 3 days | |
| Aug 1, 8:45 PM PDT | Small Craft Advisory | LOX | 30 hr | |
| Aug 2, 1:00 AM PDT | Wind Advisory | HNX | 53 hr | |
| Aug 2, 1:52 AM PDT | Excessive Heat Warning | PSR | Imperial | 66 hr |
| Aug 2, 2:34 AM PDT | Small Craft Advisory | MTR | 3 days | |
| Aug 2, 4:52 AM PDT | Dense Fog Advisory | SGX | Orange, San Diego | 3 hr |
| Aug 3, 2:59 AM PDT | Gale Warning | LOX | 24 hr | |
| Aug 3, 5:35 AM PDT | Wind Advisory | LOX | 21 hr | |
| Aug 3, 2:07 PM PDT | Small Craft Advisory | MTR | 31 hr | |
| Aug 3, 9:21 PM PDT | Small Craft Advisory | LOX | 4 days | |
| Aug 4, 3:50 AM PDT | Fire Weather Watch | MFR | Siskiyou | 11 hr |
| Aug 4, 9:03 AM PDT | Gale Warning | LOX | 18 hr | |
| Aug 4, 2:42 PM PDT | Red Flag Warning | MFR | Siskiyou | 32 hr |
| Aug 4, 8:32 PM PDT | Small Craft Advisory | MTR | 24 hr | |
| Aug 5, 3:00 AM PDT | Small Craft Advisory | LOX | 24 hr | |
| Aug 5, 2:05 PM PDT | Small Craft Advisory | MTR | 43 hr | |
| Aug 5, 2:59 PM PDT | Severe Thunderstorm Warning | MFR | Siskiyou | 31 min |
| Aug 5, 3:19 PM PDT | Special Weather Statement | MFR | Siskiyou | 26 min |
| Aug 5, 4:06 PM PDT | Special Weather Statement | MFR | Siskiyou | 24 min |
| Aug 5, 4:18 PM PDT | Special Weather Statement | MFR | Siskiyou | 42 min |
| Aug 5, 4:36 PM PDT | Special Weather Statement | MFR | Siskiyou | 39 min |
| Aug 5, 5:09 PM PDT | Special Weather Statement | MFR | Siskiyou | 51 min |
| Aug 5, 5:26 PM PDT | Special Weather Statement | MFR | Siskiyou | 34 min |
| Aug 5, 6:34 PM PDT | Areal Flood Advisory | MFR | Siskiyou | 56 min |
| Aug 5, 8:35 PM PDT | Wind Advisory | LOX | 6 hr | |
| Aug 6, 3:18 AM PDT | Gale Watch | EKA | 11 hr | |
| Aug 6, 3:18 AM PDT | Small Craft Advisory | EKA | 4 days | |
| Aug 6, 2:02 PM PDT | Small Craft Advisory | MTR | 19 hr | |
| Aug 6, 2:41 PM PDT | Gale Warning | EKA | 4 days | |
| Aug 6, 2:41 PM PDT | Hazardous Seas Watch | EKA | 13 hr | |
| Aug 7, 3:31 AM PDT | Hazardous Seas Warning | EKA | 71 hr | |
| Aug 7, 3:42 PM PDT | Special Weather Statement | STO | Alpine | 48 min |
| Aug 7, 3:52 PM PDT | Special Weather Statement | REV | Alpine, Mono | 68 min |
| Aug 7, 5:12 PM PDT | Special Weather Statement | REV | Sierra | 63 min |
| Aug 7, 6:18 PM PDT | Special Weather Statement | REV | Sierra | 57 min |
| Aug 7, 6:52 PM PDT | Areal Flood Advisory | REV | Sierra | 97 min |
| Aug 7, 6:55 PM PDT | Special Weather Statement | STO | Alpine | 35 min |
| Aug 7, 7:26 PM PDT | Special Weather Statement | REV | Plumas | 34 min |
| Aug 8, 2:03 AM PDT | Small Craft Advisory | MTR | 19 hr | |
| Aug 8, 2:02 PM PDT | Fire Weather Watch | REV | Lassen, Modoc, Plumas, Sierra | 69 hr |
| Aug 8, 4:41 PM PDT | Special Weather Statement | REV | Alpine, Mono | 109 min |
| Aug 8, 7:06 PM PDT | Areal Flood Advisory | REV | Nevada, Sierra | 68 min |
| Aug 8, 8:33 PM PDT | Small Craft Advisory | MTR | 24 hr | |
| Aug 9, 2:56 PM PDT | Special Weather Statement | STO | Sierra | 49 min |
| Aug 9, 3:10 PM PDT | Special Weather Statement | STO | Sierra | 50 min |
| Aug 9, 8:31 PM PDT | Small Craft Advisory | MTR | 24 hr | |
| Aug 10, 2:20 AM PDT | Excessive Heat Watch | PSR | Imperial, Riverside | 35 hr |
| Aug 10, 3:05 AM PDT | Small Craft Advisory | EKA | 4 days | |
| Aug 10, 3:05 AM PDT | Hazardous Seas Warning | EKA | 30 hr | |
| Aug 10, 2:00 PM PDT | Special Weather Statement | HNX | Mariposa | 45 min |
| Aug 10, 2:00 PM PDT | Fire Weather Watch | MFR | Modoc | 25 hr |
| Aug 10, 2:15 PM PDT | Special Weather Statement | STO | Sierra | 30 min |
| Aug 10, 2:26 PM PDT | Special Weather Statement | HNX | Mono | 49 min |
| Aug 10, 3:00 PM PDT | Special Weather Statement | STO | Plumas, Sierra | 75 min |
| Aug 10, 3:32 PM PDT | Flash Flood Warning | REV | Placer | 3 hr |
| Aug 10, 4:57 PM PDT | Special Weather Statement | EKA | Trinity | 33 min |
| Aug 10, 5:25 PM PDT | Special Weather Statement | HNX | Mariposa | 35 min |
| Aug 10, 5:27 PM PDT | Special Weather Statement | REV | Alpine, Lassen, Mono | 108 min |
| Aug 10, 5:56 PM PDT | Special Weather Statement | STO | Plumas | 34 min |
| Aug 10, 6:12 PM PDT | Flash Flood Warning | REV | Plumas | 3 hr |
| Aug 10, 6:23 PM PDT | Special Weather Statement | HNX | 37 min | |
| Aug 11, 1:17 AM PDT | Small Craft Advisory | MTR | 20 hr | |
| Aug 11, 10:40 AM PDT | Red Flag Warning | REV | Lassen, Modoc, Plumas, Sierra | 34 hr |
| Aug 11, 10:42 AM PDT | Lake Wind Advisory | REV | Lassen, Plumas, Sierra | 34 hr |
| Aug 11, 12:12 PM PDT | Flash Flood Warning | REV | Mono | 2 hr |
| Aug 11, 12:14 PM PDT | Excessive Heat Watch | VEF | Inyo, San Bernardino | 25 hr |
| Aug 11, 12:38 PM PDT | Excessive Heat Watch | SGX | Orange, Riverside, San Bernardino, San Diego | 25 hr |
| Aug 11, 12:50 PM PDT | Severe Thunderstorm Warning | REV | Lassen | 55 min |
| Aug 11, 1:05 PM PDT | Excessive Heat Watch | HNX | 38 hr | |
| Aug 11, 1:27 PM PDT | Excessive Heat Warning | PSR | Imperial, Riverside, San Bernardino | 9 days |
| Aug 11, 1:44 PM PDT | Excessive Heat Watch | STO | 46 hr | |
| Aug 11, 1:49 PM PDT | Excessive Heat Watch | LOX | Los Angeles, Santa Barbara | 24 hr |
| Aug 11, 2:14 PM PDT | Special Weather Statement | HNX | Mono | 46 min |
| Aug 11, 2:30 PM PDT | Red Flag Warning | MFR | Modoc | 30 hr |
| Aug 11, 3:23 PM PDT | Special Weather Statement | HNX | 37 min | |
| Aug 11, 3:43 PM PDT | Areal Flood Advisory | HNX | Madera | 2 hr |
| Aug 11, 7:40 PM PDT | Special Weather Statement | REV | Lassen | 65 min |
| Aug 12, 2:23 AM PDT | Gale Watch | EKA | 13 hr | |
| Aug 12, 2:32 AM PDT | Excessive Heat Watch | MTR | Alameda, Contra Costa, Monterey, San Benito, Santa Clara | 35 hr |
| Aug 12, 2:32 AM PDT | Small Craft Advisory | MTR | 48 hr | |
| Aug 12, 6:11 AM PDT | Excessive Heat Watch | MFR | Siskiyou | 31 hr |
| Aug 12, 1:10 PM PDT | Excessive Heat Warning | VEF | Inyo, San Bernardino | 9 days |
| Aug 12, 1:39 PM PDT | Excessive Heat Warning | SGX | Orange, Riverside, San Bernardino, San Diego | 9 days |
| Aug 12, 2:07 PM PDT | Excessive Heat Warning | LOX | Los Angeles, Santa Barbara | 9 days |
| Aug 12, 2:07 PM PDT | Heat Advisory | LOX | 9 days | |
| Aug 12, 2:20 PM PDT | Excessive Heat Watch | EKA | Del Norte, Humboldt, Lake, Mendocino, Trinity | 21 hr |
| Aug 12, 2:30 PM PDT | Red Flag Warning | MFR | Modoc | 30 hr |
| Aug 12, 3:08 PM PDT | Hazardous Seas Warning | EKA | 42 hr | |
| Aug 13, 2:57 AM PDT | Excessive Heat Warning | HNX | 9 days | |
| Aug 13, 11:23 AM PDT | Excessive Heat Warning | EKA | Lake, Mendocino | 56 hr |
| Aug 13, 11:23 AM PDT | Heat Advisory | EKA | Del Norte, Humboldt, Lake, Mendocino, Trinity | 3 days |
| Aug 13, 11:32 AM PDT | Excessive Heat Warning | STO | 6 days | |
| Aug 13, 1:03 PM PDT | Excessive Heat Warning | MTR | Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 4 more | 6 days |
| Aug 13, 1:03 PM PDT | Heat Advisory | MTR | Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 5 more | 32 hr |
| Aug 13, 1:13 PM PDT | Excessive Heat Warning | MFR | Siskiyou | 4 days |
| Aug 13, 1:13 PM PDT | Heat Advisory | MFR | Modoc, Siskiyou | 3 days |
| Aug 14, 8:55 AM PDT | Small Craft Advisory | EKA | 12 hr | |
| Aug 14, 1:21 PM PDT | Fire Weather Watch | MFR | Modoc, Siskiyou | 22 hr |
| Aug 14, 2:07 PM PDT | Small Craft Advisory | MTR | 31 hr | |
| Aug 14, 6:00 PM PDT | Special Weather Statement | HNX | 30 min | |
| Aug 14, 6:27 PM PDT | Small Craft Advisory | LOX | 4 days | |
| Aug 14, 10:38 PM PDT | Fire Weather Watch | EKA | 13 hr | |
| Aug 15, 12:00 AM PDT | Heat Advisory | MTR | Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 5 more | 69 hr |
| Aug 15, 2:14 AM PDT | Dense Smoke Advisory | REV | Lassen, Plumas, Sierra | 6 hr |
| Aug 15, 2:19 AM PDT | Fire Weather Watch | MTR | Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 5 more | 8 hr |
| Aug 15, 3:15 AM PDT | Fire Weather Watch | STO | 8 hr | |
| Aug 15, 10:27 AM PDT | Red Flag Warning | MTR | Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 5 more | 49 hr |
| Aug 15, 11:20 AM PDT | Red Flag Warning | STO | 58 hr | |
| Aug 15, 11:22 AM PDT | Red Flag Warning | EKA | 31 hr | |
| Aug 15, 11:49 AM PDT | Fire Weather Watch | MFR | Modoc | 25 hr |
| Aug 15, 11:49 AM PDT | Red Flag Warning | MFR | Modoc, Siskiyou | 33 hr |
| Aug 15, 12:20 PM PDT | Special Weather Statement | SGX | 25 min | |
| Aug 15, 12:32 PM PDT | Special Weather Statement | LOX | 58 min | |
| Aug 15, 1:01 PM PDT | Flash Flood Warning | LOX | Los Angeles | 119 min |
| Aug 15, 1:16 PM PDT | Special Weather Statement | SGX | San Diego | 29 min |
| Aug 15, 1:47 PM PDT | Areal Flood Advisory | SGX | San Bernardino | 3 hr |
| Aug 15, 1:56 PM PDT | Special Weather Statement | SGX | 49 min | |
| Aug 15, 2:04 PM PDT | Small Craft Advisory | MTR | 8 days | |
| Aug 15, 2:24 PM PDT | Severe Thunderstorm Warning | SGX | Riverside, San Diego | 55 min |
| Aug 15, 2:32 PM PDT | Special Weather Statement | PSR | Riverside | 43 min |
| Aug 15, 2:35 PM PDT | Tornado Warning | REV | Lassen | 55 min |
| Aug 15, 2:58 PM PDT | Flash Flood Warning | LOX | Los Angeles | 2 hr |
| Aug 15, 2:59 PM PDT | Fire Weather Watch | REV | Lassen, Modoc, Plumas, Sierra | 13 hr |
| Aug 15, 3:24 PM PDT | Flash Flood Warning | PSR | Riverside, San Bernardino | 4 hr |
| Aug 15, 3:26 PM PDT | Areal Flood Advisory | HNX | Kern | 2 hr |
| Aug 15, 3:29 PM PDT | Areal Flood Advisory | HNX | Kern | 95 min |
| Aug 15, 3:46 PM PDT | Special Weather Statement | PSR | Riverside | 44 min |
| Aug 15, 3:53 PM PDT | Special Weather Statement | HNX | Kern | 22 min |
| Aug 15, 4:01 PM PDT | Special Weather Statement | HNX | 29 min | |
| Aug 15, 4:08 PM PDT | Severe Thunderstorm Warning | PSR | Riverside | 37 min |
| Aug 15, 4:11 PM PDT | Flash Flood Warning | HNX | Kern | 51 min |
| Aug 15, 4:12 PM PDT | Special Weather Statement | SGX | San Diego | 33 min |
| Aug 15, 4:16 PM PDT | Flash Flood Warning | HNX | Kern | 119 min |
| Aug 15, 4:18 PM PDT | Special Weather Statement | HNX | Kings | 42 min |
| Aug 15, 4:23 PM PDT | Flash Flood Warning | HNX | Fresno, Kings | 79 min |
| Aug 15, 4:38 PM PDT | Flash Flood Warning | PSR | Riverside | 4 hr |
| Aug 15, 4:55 PM PDT | Areal Flood Advisory | LOX | Ventura | 105 min |
| Aug 15, 6:14 PM PDT | Special Weather Statement | HNX | Tulare | 46 min |
| Aug 15, 10:49 PM PDT | Red Flag Warning | LOX | Santa Barbara | 11 hr |
| Aug 16, 12:29 AM PDT | Special Marine Warning | MTR | 31 min | |
| Aug 16, 12:53 AM PDT | Special Marine Warning | MTR | 52 min | |
| Aug 16, 12:59 AM PDT | Special Marine Warning | MTR | 46 min | |
| Aug 16, 1:42 AM PDT | Special Weather Statement | MTR | Monterey, Santa Cruz | 93 min |
| Aug 16, 1:43 AM PDT | Special Marine Warning | MTR | 47 min | |
| Aug 16, 1:46 AM PDT | Special Marine Warning | MTR | 29 min | |
| Aug 16, 2:02 AM PDT | Special Marine Warning | MTR | 43 min | |
| Aug 16, 2:10 AM PDT | Special Marine Warning | MTR | 2 hr | |
| Aug 16, 2:18 AM PDT | Small Craft Advisory | MTR | 5 days | |
| Aug 16, 2:33 AM PDT | Flash Flood Watch | LOX | Santa Barbara | 17 hr |
| Aug 16, 2:41 AM PDT | Severe Thunderstorm Warning | MTR | Alameda, Monterey, San Benito, City and County of San Francisco, San Mateo, Santa Clara and 1 more | 94 min |
| Aug 16, 2:55 AM PDT | Special Marine Warning | MTR | 2 hr | |
| Aug 16, 3:40 AM PDT | Flash Flood Watch | HNX | 17 hr | |
| Aug 16, 3:40 AM PDT | Heat Advisory | REV | Modoc | 4 days |
| Aug 16, 3:42 AM PDT | Red Flag Warning | REV | El Dorado, Lassen, Madera, Modoc, Mono, Nevada and 3 more | 25 hr |
| Aug 16, 3:55 AM PDT | Severe Thunderstorm Warning | MTR | Alameda, Contra Costa, Marin, Monterey, Napa, City and County of San Francisco and 4 more | 80 min |
| Aug 16, 4:05 AM PDT | Special Weather Statement | STO | Solano | 70 min |
| Aug 16, 4:20 AM PDT | Red Flag Warning | EKA | 8 hr | |
| Aug 16, 4:25 AM PDT | Special Marine Warning | MTR | 35 min | |
| Aug 16, 5:04 AM PDT | Special Marine Warning | MTR | 56 min | |
| Aug 16, 5:14 AM PDT | Severe Thunderstorm Warning | MTR | Alameda, Contra Costa, Marin, Napa, City and County of San Francisco, San Mateo and 3 more | 91 min |
| Aug 16, 6:10 AM PDT | Special Marine Warning | MTR | 2 hr | |
| Aug 16, 6:20 AM PDT | Special Weather Statement | STO | Colusa, Glenn | 55 min |
| Aug 16, 6:37 AM PDT | Severe Thunderstorm Warning | MTR | Alameda, Contra Costa, Marin, Monterey, Napa, City and County of San Francisco and 4 more | 83 min |
| Aug 16, 6:40 AM PDT | Special Weather Statement | EKA | Lake | 20 min |
| Aug 16, 6:56 AM PDT | Special Weather Statement | STO | Solano, Yolo | 49 min |
| Aug 16, 7:28 AM PDT | Special Weather Statement | STO | San Joaquin | 47 min |
| Aug 16, 7:37 AM PDT | Special Weather Statement | STO | Glenn | 38 min |
| Aug 16, 7:56 AM PDT | Special Weather Statement | STO | Colusa, Sacramento, Solano, Sutter, Yolo | 64 min |
| Aug 16, 8:07 AM PDT | Special Weather Statement | MTR | Alameda, Contra Costa, Marin, Napa, San Mateo, Santa Clara and 2 more | 38 min |
| Aug 16, 8:16 AM PDT | Special Weather Statement | EKA | Lake | 44 min |
| Aug 16, 8:18 AM PDT | Special Weather Statement | STO | Butte, Glenn, Tehama | 57 min |
| Aug 16, 8:41 AM PDT | Special Weather Statement | MTR | Alameda, Contra Costa, Marin, Napa, San Mateo, Sonoma | 49 min |
| Aug 16, 9:21 AM PDT | Special Weather Statement | EKA | Mendocino | 39 min |
| Aug 16, 9:40 AM PDT | Special Weather Statement | EKA | Trinity | 50 min |
| Aug 16, 10:47 AM PDT | Dense Smoke Advisory | REV | Alpine, El Dorado, Lassen, Nevada, Placer, Plumas and 1 more | 53 hr |
| Aug 16, 12:06 PM PDT | Red Flag Warning | EKA | 16 hr | |
| Aug 16, 12:57 PM PDT | Red Flag Warning | MFR | Modoc, Siskiyou | 55 hr |
| Aug 16, 1:19 PM PDT | Special Weather Statement | HNX | 41 min | |
| Aug 16, 1:42 PM PDT | Flash Flood Warning | HNX | Kern | 3 hr |
| Aug 16, 2:04 PM PDT | Small Craft Advisory | MTR | 6 days | |
| Aug 16, 3:29 PM PDT | Special Weather Statement | HNX | Tulare | 46 min |
| Aug 16, 3:39 PM PDT | Special Weather Statement | HNX | 51 min | |
| Aug 16, 3:51 PM PDT | Special Weather Statement | HNX | Tulare | 39 min |
| Aug 16, 4:24 PM PDT | Flash Flood Warning | LOX | Los Angeles | 81 min |
| Aug 16, 4:35 PM PDT | Special Weather Statement | LOX | 85 min | |
| Aug 16, 4:39 PM PDT | Special Weather Statement | HNX | Tulare | 66 min |
| Aug 16, 4:41 PM PDT | Special Weather Statement | HNX | 49 min | |
| Aug 16, 4:49 PM PDT | Flash Flood Warning | HNX | Tulare | 90 min |
| Aug 16, 5:15 PM PDT | Special Weather Statement | HNX | 45 min | |
| Aug 16, 5:24 PM PDT | Special Weather Statement | HNX | 51 min | |
| Aug 16, 6:00 PM PDT | Special Weather Statement | HNX | 45 min | |
| Aug 16, 6:24 PM PDT | Special Weather Statement | REV | Mono | 3 hr |
| Aug 16, 6:27 PM PDT | Special Weather Statement | HNX | 33 min | |
| Aug 16, 6:59 PM PDT | Special Marine Warning | MTR | 46 min | |
| Aug 16, 7:13 PM PDT | Special Weather Statement | HNX | 47 min | |
| Aug 16, 7:21 PM PDT | Areal Flood Advisory | HNX | Kern | 66 min |
| Aug 16, 9:29 PM PDT | Dust Storm Advisory | PSR | Imperial | 61 min |
| Aug 16, 10:17 PM PDT | Dust Storm Advisory | PSR | Imperial | 58 min |
| Aug 17, 12:56 AM PDT | Special Weather Statement | STO | Sacramento | 64 min |
| Aug 17, 2:54 AM PDT | Small Craft Advisory | EKA | 54 hr | |
| Aug 17, 3:24 AM PDT | Gale Watch | LOX | 23 hr | |
| Aug 17, 3:32 AM PDT | Heat Advisory | EKA | Lake, Mendocino | 23 hr |
| Aug 17, 3:47 AM PDT | Red Flag Warning | EKA | 15 hr | |
| Aug 17, 7:02 AM PDT | Special Weather Statement | STO | Colusa, Glenn | 43 min |
| Aug 17, 7:15 AM PDT | Special Weather Statement | EKA | Lake | 30 min |
| Aug 17, 7:23 AM PDT | Special Weather Statement | STO | Shasta, Tehama | 52 min |
| Aug 17, 7:41 AM PDT | Special Weather Statement | STO | Colusa, Glenn, Sutter, Yolo | 64 min |
| Aug 17, 7:58 AM PDT | Special Weather Statement | STO | Butte, Shasta, Tehama | 62 min |
| Aug 17, 8:46 AM PDT | Special Weather Statement | STO | Butte, Plumas, Shasta, Tehama | 59 min |
| Aug 17, 9:43 AM PDT | Special Weather Statement | STO | Shasta, Tehama | 62 min |
| Aug 17, 9:56 AM PDT | Special Weather Statement | MTR | Marin | 34 min |
| Aug 17, 10:44 AM PDT | Special Weather Statement | MTR | Marin | 31 min |
| Aug 17, 11:02 AM PDT | Special Weather Statement | STO | Glenn, Tehama | 43 min |
| Aug 17, 11:16 AM PDT | Special Weather Statement | MTR | Napa | 29 min |
| Aug 17, 11:26 AM PDT | Special Weather Statement | EKA | Lake | 49 min |
| Aug 17, 11:42 AM PDT | Special Weather Statement | EKA | Lake | 33 min |
| Aug 17, 11:49 AM PDT | Special Weather Statement | STO | Colusa, Yolo | 41 min |
| Aug 17, 12:10 PM PDT | Special Weather Statement | EKA | Mendocino | 50 min |
| Aug 17, 12:13 PM PDT | Special Weather Statement | MFR | Modoc | 62 min |
| Aug 17, 12:31 PM PDT | Fire Weather Watch | REV | Lassen, Modoc | 26 hr |
| Aug 17, 12:31 PM PDT | Special Weather Statement | STO | Colusa, Glenn, Tehama | 59 min |
| Aug 17, 12:42 PM PDT | Fire Weather Watch | MFR | Modoc | 26 hr |
| Aug 17, 12:58 PM PDT | Special Weather Statement | EKA | Trinity | 47 min |
| Aug 17, 1:46 PM PDT | Special Weather Statement | EKA | Trinity | 44 min |
| Aug 17, 1:50 PM PDT | Special Weather Statement | STO | Shasta | 40 min |
| Aug 17, 2:25 PM PDT | Special Weather Statement | MTR | Sonoma | 35 min |
| Aug 17, 2:32 PM PDT | Special Weather Statement | STO | Glenn | 43 min |
| Aug 17, 2:41 PM PDT | Special Weather Statement | EKA | Lake | 49 min |
| Aug 17, 2:59 PM PDT | Special Weather Statement | MTR | Sonoma | 31 min |
| Aug 17, 3:07 PM PDT | Special Weather Statement | MFR | Siskiyou | 23 min |
| Aug 17, 3:09 PM PDT | Special Weather Statement | REV | Alpine, Lassen, Mono, Plumas | 111 min |
| Aug 17, 3:23 PM PDT | Special Weather Statement | STO | Colusa, Glenn, Tehama | 37 min |
| Aug 17, 3:33 PM PDT | Special Weather Statement | EKA | Lake | 57 min |
| Aug 17, 3:44 PM PDT | Special Marine Warning | MTR | 17 min | |
| Aug 17, 4:09 PM PDT | Special Weather Statement | HNX | Mono | 66 min |
| Aug 17, 4:10 PM PDT | Special Weather Statement | STO | Glenn, Shasta, Tehama | 80 min |
| Aug 17, 4:12 PM PDT | Special Weather Statement | HNX | Mono | 63 min |
| Aug 17, 4:33 PM PDT | Special Weather Statement | EKA | Lake | 57 min |
| Aug 17, 5:05 PM PDT | Severe Thunderstorm Warning | HNX | Fresno, Madera, Mariposa, Tuolumne | 55 min |
| Aug 17, 5:38 PM PDT | Special Weather Statement | EKA | Lake | 52 min |
| Aug 17, 5:48 PM PDT | Special Weather Statement | HNX | Mono | 57 min |
| Aug 17, 5:54 PM PDT | Special Weather Statement | STO | Butte, Colusa, Glenn, Shasta, Tehama | 111 min |
| Aug 17, 6:11 PM PDT | Severe Thunderstorm Warning | HNX | Mariposa, Tuolumne | 34 min |
| Aug 17, 7:58 PM PDT | Special Weather Statement | STO | Shasta, Tehama | 77 min |
| Aug 17, 9:29 PM PDT | Heat Advisory | LOX | Santa Barbara | 4 days |
| Aug 17, 9:48 PM PDT | Special Weather Statement | STO | Tehama | 72 min |
| Aug 17, 11:44 PM PDT | Dust Storm Advisory | PSR | Imperial | 61 min |
| Aug 18, 2:13 AM PDT | Excessive Heat Warning | EKA | Lake, Mendocino | 18 hr |
| Aug 18, 2:30 AM PDT | Gale Warning | LOX | 4 days | |
| Aug 18, 3:26 AM PDT | Special Weather Statement | PSR | Imperial | 34 min |
| Aug 18, 11:43 AM PDT | Special Weather Statement | SGX | 32 min | |
| Aug 18, 12:28 PM PDT | Severe Thunderstorm Warning | SGX | Riverside | 46 min |
| Aug 18, 12:30 PM PDT | Flash Flood Watch | HNX | 7 hr | |
| Aug 18, 12:43 PM PDT | Special Weather Statement | SGX | 47 min | |
| Aug 18, 12:50 PM PDT | Flash Flood Warning | SGX | Riverside | 3 hr |
| Aug 18, 12:54 PM PDT | Severe Thunderstorm Warning | SGX | San Bernardino | 66 min |
| Aug 18, 12:57 PM PDT | Special Weather Statement | PSR | Riverside | 48 min |
| Aug 18, 1:00 PM PDT | Flash Flood Warning | SGX | San Bernardino | 3 hr |
| Aug 18, 1:57 PM PDT | Severe Thunderstorm Warning | SGX | San Bernardino | 39 min |
| Aug 18, 2:10 PM PDT | Flash Flood Warning | SGX | Riverside, San Bernardino | 59 min |
| Aug 18, 2:16 PM PDT | Red Flag Warning | MFR | Modoc | 30 hr |
| Aug 18, 2:23 PM PDT | Red Flag Warning | REV | Lassen, Modoc, Plumas, Sierra | 31 hr |
| Aug 18, 2:41 PM PDT | Special Weather Statement | LOX | Los Angeles | 49 min |
| Aug 18, 3:02 PM PDT | Special Weather Statement | SGX | 28 min | |
| Aug 18, 3:11 PM PDT | Special Weather Statement | LOX | Los Angeles | 34 min |
| Aug 18, 3:12 PM PDT | Severe Thunderstorm Warning | SGX | Riverside | 21 min |
| Aug 18, 3:13 PM PDT | Special Weather Statement | HNX | 47 min | |
| Aug 18, 3:35 PM PDT | Special Weather Statement | HNX | 40 min | |
| Aug 18, 3:35 PM PDT | Special Weather Statement | LOX | Los Angeles | 55 min |
| Aug 18, 3:38 PM PDT | Flash Flood Warning | HNX | Tulare | 92 min |
| Aug 18, 3:45 PM PDT | Severe Thunderstorm Warning | REV | Lassen | 45 min |
| Aug 18, 3:48 PM PDT | Areal Flood Advisory | HNX | Kern | 38 min |
| Aug 18, 3:49 PM PDT | Lake Wind Advisory | REV | Lassen, Plumas, Sierra | 29 hr |
| Aug 18, 3:57 PM PDT | Areal Flood Advisory | HNX | Kern | 94 min |
| Aug 18, 4:04 PM PDT | Special Weather Statement | LOX | Ventura | 56 min |
| Aug 18, 4:14 PM PDT | Special Weather Statement | HNX | 31 min | |
| Aug 18, 4:21 PM PDT | Flash Flood Warning | HNX | Kern | 114 min |
| Aug 18, 4:21 PM PDT | Special Weather Statement | LOX | Ventura | 54 min |
| Aug 18, 4:32 PM PDT | Special Weather Statement | HNX | Kern | 28 min |
| Aug 18, 4:44 PM PDT | Special Weather Statement | HNX | 31 min | |
| Aug 18, 4:44 PM PDT | Special Weather Statement | REV | Mono | 2 hr |
| Aug 18, 4:55 PM PDT | Special Weather Statement | HNX | Tulare | 50 min |
| Aug 18, 5:01 PM PDT | Special Weather Statement | LOX | Ventura | 59 min |
| Aug 18, 5:03 PM PDT | Special Weather Statement | HNX | Kern | 42 min |
| Aug 18, 5:15 PM PDT | Flash Flood Warning | LOX | Ventura | 115 min |
| Aug 18, 5:49 PM PDT | Special Weather Statement | PSR | Riverside | 56 min |
| Aug 18, 7:32 PM PDT | Areal Flood Advisory | VEF | San Bernardino | 118 min |
| Aug 18, 9:26 PM PDT | Gale Watch | LOX | 29 hr | |
| Aug 18, 9:26 PM PDT | Small Craft Advisory | LOX | 4 days | |
| Aug 19, 3:20 AM PDT | Red Flag Warning | STO | 30 hr | |
| Aug 19, 9:28 AM PDT | Red Flag Warning | EKA | 24 hr | |
| Aug 19, 10:28 AM PDT | Dense Smoke Advisory | REV | Alpine, El Dorado, Lassen, Modoc, Mono, Nevada and 3 more | 4 days |
| Aug 19, 12:32 PM PDT | Areal Flood Advisory | SGX | San Bernardino | 118 min |
| Aug 19, 1:40 PM PDT | Special Weather Statement | HNX | Tulare | 50 min |
| Aug 19, 1:40 PM PDT | Special Weather Statement | REV | Mono | 110 min |
| Aug 19, 1:55 PM PDT | Flash Flood Warning | LOX | Los Angeles | 79 min |
| Aug 19, 2:17 PM PDT | Special Weather Statement | HNX | Tulare | 43 min |
| Aug 19, 2:21 PM PDT | Special Weather Statement | HNX | 39 min | |
| Aug 19, 2:30 PM PDT | Special Weather Statement | HNX | 45 min | |
| Aug 19, 2:46 PM PDT | Flash Flood Warning | SGX | San Bernardino | 73 min |
| Aug 19, 3:04 PM PDT | Special Weather Statement | LOX | Los Angeles | 56 min |
| Aug 19, 3:07 PM PDT | Special Weather Statement | HNX | Tulare | 38 min |
| Aug 19, 3:34 PM PDT | Special Weather Statement | HNX | 41 min | |
| Aug 19, 3:48 PM PDT | Flash Flood Warning | LOX | Los Angeles | 66 min |
| Aug 19, 4:17 PM PDT | Special Weather Statement | HNX | Tulare | 43 min |
| Aug 19, 4:21 PM PDT | Special Weather Statement | HNX | Kern | 39 min |
| Aug 19, 4:53 PM PDT | Special Weather Statement | HNX | 52 min | |
| Aug 19, 4:58 PM PDT | Special Weather Statement | HNX | 47 min | |
| Aug 19, 4:59 PM PDT | Areal Flood Advisory | VEF | San Bernardino | 3 hr |
| Aug 20, 1:35 PM PDT | Areal Flood Advisory | SGX | San Diego | 52 min |
| Aug 20, 2:30 PM PDT | Small Craft Advisory | EKA | 6 days | |
| Aug 20, 4:49 PM PDT | Areal Flood Advisory | SGX | San Diego | 54 min |
| Aug 20, 5:48 PM PDT | Areal Flood Advisory | VEF | San Bernardino | 117 min |
| Aug 21, 2:33 AM PDT | Gale Warning | MTR | 24 hr | |
| Aug 21, 3:20 AM PDT | Excessive Heat Watch | PSR | Imperial | 47 hr |
| Aug 21, 10:27 AM PDT | Fire Weather Watch | STO | 27 hr | |
| Aug 21, 10:36 AM PDT | Fire Weather Watch | REV | El Dorado, Lassen, Madera, Modoc, Mono, Nevada and 3 more | 59 hr |
| Aug 21, 11:04 AM PDT | Fire Weather Watch | MTR | Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 5 more | 24 hr |
| Aug 21, 12:45 PM PDT | Flash Flood Warning | SGX | San Diego | 44 min |
| Aug 21, 1:09 PM PDT | Special Weather Statement | SGX | San Diego | 51 min |
| Aug 21, 1:13 PM PDT | Areal Flood Advisory | SGX | San Bernardino | 3 hr |
| Aug 21, 1:21 PM PDT | Severe Thunderstorm Warning | SGX | Riverside | 26 min |
| Aug 21, 1:37 PM PDT | Severe Thunderstorm Warning | SGX | San Bernardino | 25 min |
| Aug 21, 2:03 PM PDT | Fire Weather Watch | MFR | Modoc | 12 hr |
| Aug 21, 2:03 PM PDT | Fire Weather Watch | MFR | Modoc, Siskiyou | 37 hr |
| Aug 21, 2:04 PM PDT | Flash Flood Watch | LOX | Santa Barbara | 29 hr |
| Aug 21, 3:53 PM PDT | Special Weather Statement | SGX | San Diego | 37 min |
| Aug 22, 1:35 AM PDT | Red Flag Warning | MFR | Modoc | 42 hr |
| Aug 22, 2:33 AM PDT | Fire Weather Watch | EKA | 24 hr | |
| Aug 22, 11:48 AM PDT | Red Flag Warning | MTR | Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 5 more | 46 hr |
| Aug 22, 1:31 PM PDT | Red Flag Warning | STO | 57 hr | |
| Aug 22, 1:48 PM PDT | Red Flag Warning | EKA | 57 hr | |
| Aug 22, 1:55 PM PDT | Special Weather Statement | SGX | 50 min | |
| Aug 22, 2:00 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 45 min |
| Aug 22, 2:15 PM PDT | Flash Flood Watch | LOX | Santa Barbara | 29 hr |
| Aug 22, 2:21 PM PDT | Severe Thunderstorm Warning | SGX | San Diego | 54 min |
| Aug 22, 2:34 PM PDT | Flash Flood Warning | SGX | San Diego | 76 min |
| Aug 22, 3:11 PM PDT | Special Weather Statement | SGX | 64 min | |
| Aug 22, 4:07 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Aug 22, 4:13 PM PDT | Severe Thunderstorm Warning | SGX | San Bernardino | 47 min |
| Aug 22, 4:55 PM PDT | Areal Flood Advisory | SGX | San Bernardino | 2 hr |
| Aug 22, 6:25 PM PDT | Red Flag Warning | REV | El Dorado, Lassen, Madera, Modoc, Mono, Nevada and 3 more | 41 hr |
| Aug 23, 2:25 AM PDT | Excessive Heat Warning | PSR | Imperial, Riverside, San Bernardino | 6 days |
| Aug 23, 2:41 AM PDT | Red Flag Warning | MFR | Modoc, Siskiyou | 44 hr |
| Aug 23, 2:42 AM PDT | Excessive Heat Warning | VEF | San Bernardino | 5 days |
| Aug 23, 2:06 PM PDT | Small Craft Advisory | MTR | 19 hr | |
| Aug 23, 3:12 PM PDT | Areal Flood Advisory | HNX | Fresno | 2 hr |
| Aug 23, 3:14 PM PDT | Special Weather Statement | HNX | 46 min | |
| Aug 23, 3:22 PM PDT | Special Weather Statement | HNX | 38 min | |
| Aug 23, 3:35 PM PDT | Special Weather Statement | REV | Alpine, Mono | 55 min |
| Aug 23, 4:01 PM PDT | Flash Flood Warning | HNX | Fresno | 81 min |
| Aug 23, 4:17 PM PDT | Special Weather Statement | HNX | 43 min | |
| Aug 23, 5:17 PM PDT | Flash Flood Warning | HNX | Fresno | 118 min |
| Aug 23, 5:40 PM PDT | Special Weather Statement | HNX | Tuolumne | 35 min |
| Aug 23, 6:30 PM PDT | Areal Flood Advisory | REV | Mono | 104 min |
| Aug 23, 9:23 PM PDT | Red Flag Warning | REV | Lassen, Modoc | 33 hr |
| Aug 23, 10:10 PM PDT | Special Weather Statement | STO | Tuolumne | 50 min |
| Aug 24, 12:43 AM PDT | Special Weather Statement | HNX | Mariposa | 47 min |
| Aug 24, 1:36 AM PDT | Special Weather Statement | REV | Alpine, Lassen, Mono | 3 hr |
| Aug 24, 2:26 AM PDT | Small Craft Advisory | LOX | 19 hr | |
| Aug 24, 1:17 PM PDT | Excessive Heat Watch | SGX | Riverside, San Diego | 14 hr |
| Aug 24, 1:17 PM PDT | Heat Advisory | SGX | Riverside, San Bernardino | 4 days |
| Aug 24, 3:48 PM PDT | Fire Weather Watch | REV | Lassen, Modoc, Plumas, Sierra | 14 hr |
| Aug 25, 3:43 AM PDT | Excessive Heat Warning | SGX | Riverside, San Diego | 4 days |
| Aug 25, 5:36 AM PDT | Hazardous Seas Watch | EKA | 9 hr | |
| Aug 25, 6:10 AM PDT | Red Flag Warning | REV | El Dorado, Lassen, Modoc, Nevada, Placer, Plumas and 1 more | 14 hr |
| Aug 25, 9:06 AM PDT | Small Craft Advisory | LOX | 60 hr | |
| Aug 25, 2:34 PM PDT | Gale Warning | EKA | 7 days | |
| Aug 25, 2:34 PM PDT | Small Craft Advisory | EKA | 6 days | |
| Aug 25, 2:34 PM PDT | Hazardous Seas Watch | EKA | 13 hr | |
| Aug 25, 3:00 PM PDT | Special Weather Statement | REV | Lassen, Plumas | 2 hr |
| Aug 25, 5:53 PM PDT | Small Craft Advisory | MTR | 6 days | |
| Aug 26, 2:40 AM PDT | Small Craft Advisory | LOX | 48 hr | |
| Aug 26, 3:34 AM PDT | Hazardous Seas Warning | EKA | 6 days | |
| Aug 26, 4:54 PM PDT | Wind Advisory | LOX | 16 hr | |
| Aug 26, 5:44 PM PDT | Special Weather Statement | REV | Lassen | 106 min |
| Aug 27, 3:24 AM PDT | Heat Advisory | LOX | Los Angeles | 18 hr |
| Aug 27, 2:23 PM PDT | Gale Warning | LOX | 6 hr | |
| Aug 27, 4:18 PM PDT | Wind Advisory | LOX | 11 hr | |
| Aug 27, 9:52 PM PDT | Dense Smoke Advisory | REV | Alpine, El Dorado, Lassen, Nevada, Placer, Plumas and 1 more | 63 hr |
| Aug 28, 1:48 AM PDT | Excessive Heat Warning | PSR | Imperial, Riverside | 18 hr |
| Aug 28, 3:07 AM PDT | Small Craft Advisory | LOX | 6 hr | |
| Aug 28, 9:13 AM PDT | Small Craft Advisory | LOX | 9 hr | |
| Aug 29, 3:50 AM PDT | Fire Weather Watch | EKA | 23 hr | |
| Aug 29, 2:31 PM PDT | Small Craft Advisory | MTR | 6 hr | |
| Aug 29, 4:02 PM PDT | Special Weather Statement | PSR | Imperial | 58 min |
| Aug 29, 5:41 PM PDT | Special Weather Statement | REV | Alpine | 34 min |
| Aug 30, 2:46 AM PDT | Small Craft Advisory | MTR | 18 hr | |
| Aug 30, 3:00 AM PDT | Red Flag Warning | EKA | 32 hr | |
| Aug 31, 3:08 AM PDT | Heat Advisory | MFR | Siskiyou | 6 days |
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 | 20 |
| Tornado Warning | 1 |
| Special Weather Statement | 152 |
| Flooding | |
| Flash Flood Warning | 27 |
| Flash Flood Watch | 5 |
| Areal Flood Advisory | 21 |
| Heat | |
| Excessive Heat Warning | 15 |
| Excessive Heat Watch | 11 |
| Heat Advisory | 11 |
| Wind and dust | |
| Dust Storm Advisory | 3 |
| Lake Wind Advisory | 2 |
| Wind Advisory | 5 |
| Fire | |
| Red Flag Warning | 27 |
| Fire Weather Watch | 19 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
| Dense Smoke Advisory | 4 |
| Marine | |
| Gale Warning | 7 |
| Hazardous Seas Warning | 4 |
| Special Marine Warning | 13 |
| Gale Watch | 4 |
| Hazardous Seas Watch | 3 |
| Small Craft Advisory | 36 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Modoc County28
- Lassen County26
- San Bernardino County25
- Sierra County23
- Plumas County22
- Riverside County22
- Siskiyou County20
- Mono County20
- San Diego County15
- Alameda County14
- Lake County14
- Marin County14
- Sonoma County14
- Contra Costa County13
- Santa Clara County13
- Napa County13
- San Mateo County13
- Santa Cruz County13
- Kern County13
- Alpine County12
- Los Angeles County12
- Monterey County12
- Tehama County12
- Imperial County11
- Tulare County11
- Glenn County11
- City and County of San Francisco10
- San Benito County9
- Nevada County8
- Placer County8
- Colusa County8
- Shasta County8
- Santa Barbara County7
- Mendocino County7
- El Dorado County7
- Trinity County6
- Mariposa County5
- Madera County5
- Fresno County5
- Ventura County5
Nearby
Alerts in force nowTornadoes on recordThe radar archive20192021
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.