Weather alerts in California, 1999
136 weather alerts in 1999, 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 1999. Tap one for its archive.
- Alerts
- 136
- Warnings
- 136
- Watches
- 0
- Advisories
- 0
- Busiest month
- July80 alerts
- Busiest day
- July 13, 199924 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 19, 4:24 PM PST | Severe Thunderstorm Warning | STO | Shasta | 36 min |
| Feb 8, 10:11 PM PST | Flash Flood Warning | MTR | San Mateo | 12 hr |
| Feb 9, 4:08 AM PST | Flash Flood Warning | MTR | Sonoma | 6 hr |
| Feb 9, 8:46 AM PST | Flash Flood Warning | STO | Calaveras | 119 min |
| Feb 9, 10:35 AM PST | Flash Flood Warning | STO | Amador, Calaveras, Tuolumne | 2 hr |
| Apr 1, 2:45 PM PST | Severe Thunderstorm Warning | LOX | Santa Barbara | 60 min |
| Apr 3, 4:45 PM PST | Severe Thunderstorm Warning | MTR | Santa Clara | 45 min |
| Apr 8, 7:58 PM PDT | Severe Thunderstorm Warning | HNX | Kings, Tulare | 32 min |
| Apr 23, 4:35 PM PDT | Severe Thunderstorm Warning | LOX | Los Angeles, Ventura | 60 min |
| Apr 23, 5:30 PM PDT | Severe Thunderstorm Warning | LOX | Los Angeles, Ventura | 60 min |
| May 24, 2:52 PM PDT | Severe Thunderstorm Warning | STO | Amador, Calaveras | 28 min |
| May 24, 4:05 PM PDT | Severe Thunderstorm Warning | STO | Placer | 30 min |
| May 24, 5:50 PM PDT | Severe Thunderstorm Warning | REV | Nevada | 40 min |
| May 24, 7:26 PM PDT | Severe Thunderstorm Warning | REV | Plumas, Sierra | 44 min |
| May 27, 5:10 PM PDT | Flash Flood Warning | LOX | Los Angeles | 110 min |
| May 27, 5:20 PM PDT | Severe Thunderstorm Warning | LOX | Los Angeles | 40 min |
| Jun 2, 2:32 PM PDT | Severe Thunderstorm Warning | STO | Colusa, Glenn | 43 min |
| Jul 8, 12:40 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Jul 9, 12:47 PM PDT | Flash Flood Warning | VEF | Inyo | 3 hr |
| Jul 9, 12:47 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Jul 9, 5:27 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Jul 11, 12:37 PM PDT | Flash Flood Warning | SGX | Riverside | 113 min |
| Jul 11, 1:55 PM PDT | Flash Flood Warning | SGX | San Diego | 65 min |
| Jul 11, 2:56 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Jul 11, 3:15 PM PDT | Flash Flood Warning | SGX | San Bernardino | 60 min |
| Jul 11, 3:41 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Jul 11, 4:00 PM PDT | Flash Flood Warning | SGX | San Bernardino | 60 min |
| Jul 11, 4:27 PM PDT | Flash Flood Warning | HNX | Kern | 3 hr |
| Jul 11, 4:55 PM PDT | Flash Flood Warning | SGX | Riverside | 65 min |
| Jul 11, 4:55 PM PDT | Flash Flood Warning | SGX | San Bernardino | 65 min |
| Jul 11, 5:20 PM PDT | Flash Flood Warning | LOX | Los Angeles | 100 min |
| Jul 11, 5:26 PM PDT | Severe Thunderstorm Warning | SGX | Riverside | 34 min |
| Jul 11, 5:55 PM PDT | Flash Flood Warning | SGX | San Bernardino | 2 hr |
| Jul 11, 5:55 PM PDT | Flash Flood Warning | SGX | Riverside | 2 hr |
| Jul 11, 6:29 PM PDT | Severe Thunderstorm Warning | PSR | Imperial | 61 min |
| Jul 11, 7:30 PM PDT | Flash Flood Warning | SGX | San Diego | 60 min |
| Jul 11, 8:20 PM PDT | Flash Flood Warning | SGX | San Diego | 100 min |
| Jul 12, 1:02 PM PDT | Flash Flood Warning | VEF | San Bernardino | 118 min |
| Jul 12, 1:56 PM PDT | Severe Thunderstorm Warning | HNX | Kern | 34 min |
| Jul 12, 2:00 PM PDT | Flash Flood Warning | SGX | San Diego | 30 min |
| Jul 12, 2:00 PM PDT | Flash Flood Warning | SGX | San Diego | 2 hr |
| Jul 12, 2:30 PM PDT | Severe Thunderstorm Warning | LOX | San Luis Obispo, Santa Barbara | 60 min |
| Jul 12, 2:30 PM PDT | Severe Thunderstorm Warning | LOX | Ventura | 60 min |
| Jul 12, 4:41 PM PDT | Severe Thunderstorm Warning | STO | Tuolumne | 34 min |
| Jul 12, 4:45 PM PDT | Flash Flood Warning | LOX | Los Angeles, Ventura | 2 hr |
| Jul 12, 5:15 PM PDT | Flash Flood Warning | LOX | Los Angeles | 60 min |
| Jul 12, 6:15 PM PDT | Flash Flood Warning | LOX | Los Angeles | 60 min |
| Jul 12, 7:15 PM PDT | Flash Flood Warning | SGX | San Bernardino | 75 min |
| Jul 12, 7:29 PM PDT | Flash Flood Warning | SGX | San Diego | 61 min |
| Jul 12, 8:30 PM PDT | Flash Flood Warning | SGX | San Bernardino | 60 min |
| Jul 12, 9:39 PM PDT | Flash Flood Warning | VEF | San Bernardino | 111 min |
| Jul 12, 11:15 PM PDT | Flash Flood Warning | LOX | Los Angeles | 3 hr |
| Jul 12, 11:55 PM PDT | Flash Flood Warning | LOX | Los Angeles | 2 hr |
| Jul 13, 12:30 AM PDT | Flash Flood Warning | LOX | Ventura | 90 min |
| Jul 13, 1:50 AM PDT | Flash Flood Warning | LOX | Los Angeles, Santa Barbara, Ventura | 3 hr |
| Jul 13, 4:40 AM PDT | Flash Flood Warning | LOX | Santa Barbara | 2 hr |
| Jul 13, 12:13 PM PDT | Flash Flood Warning | LOX | Ventura | 47 min |
| Jul 13, 1:00 PM PDT | Flash Flood Warning | LOX | Ventura | 90 min |
| Jul 13, 2:00 PM PDT | Severe Thunderstorm Warning | LOX | Santa Barbara, Ventura | 60 min |
| Jul 13, 2:10 PM PDT | Flash Flood Warning | VEF | San Bernardino | 2 hr |
| Jul 13, 2:17 PM PDT | Severe Thunderstorm Warning | STO | Tehama | 53 min |
| Jul 13, 2:25 PM PDT | Flash Flood Warning | LOX | Los Angeles, Santa Barbara, Ventura | 95 min |
| Jul 13, 2:25 PM PDT | Flash Flood Warning | LOX | San Luis Obispo | 95 min |
| Jul 13, 2:45 PM PDT | Severe Thunderstorm Warning | STO | Alpine | 60 min |
| Jul 13, 3:06 PM PDT | Severe Thunderstorm Warning | LOX | Los Angeles | 24 min |
| Jul 13, 3:24 PM PDT | Flash Flood Warning | VEF | San Bernardino | 2 hr |
| Jul 13, 4:00 PM PDT | Flash Flood Warning | LOX | Santa Barbara | 60 min |
| Jul 13, 4:07 PM PDT | Flash Flood Warning | PSR | Riverside | 3 hr |
| Jul 13, 4:21 PM PDT | Flash Flood Warning | SGX | San Bernardino | 119 min |
| Jul 13, 5:12 PM PDT | Flash Flood Warning | SGX | Riverside | 108 min |
| Jul 13, 5:17 PM PDT | Flash Flood Warning | LOX | Los Angeles | 73 min |
| Jul 13, 5:24 PM PDT | Flash Flood Warning | VEF | San Bernardino | 2 hr |
| Jul 13, 6:27 PM PDT | Flash Flood Warning | LOX | Los Angeles | 33 min |
| Jul 13, 7:01 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Jul 13, 8:05 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Jul 14, 12:33 PM PDT | Severe Thunderstorm Warning | SGX | San Bernardino | 57 min |
| Jul 14, 2:38 PM PDT | Severe Thunderstorm Warning | HNX | Madera | 57 min |
| Jul 14, 3:15 PM PDT | Flash Flood Warning | LOX | Ventura | 75 min |
| Jul 14, 3:35 PM PDT | Flash Flood Warning | HNX | Madera | 90 min |
| Jul 14, 6:03 PM PDT | Severe Thunderstorm Warning | PSR | Imperial | 42 min |
| Jul 14, 6:22 PM PDT | Flash Flood Warning | VEF | Inyo | 58 min |
| Jul 14, 7:20 PM PDT | Flash Flood Warning | VEF | Inyo | 60 min |
| Jul 14, 8:20 PM PDT | Flash Flood Warning | VEF | Inyo | 115 min |
| Jul 15, 12:21 AM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 84 min |
| Jul 15, 12:25 AM PDT | Flash Flood Warning | VEF | San Bernardino | 110 min |
| Jul 28, 2:55 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Jul 28, 3:20 PM PDT | Flash Flood Warning | SGX | San Diego | 85 min |
| Jul 28, 3:28 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Jul 28, 4:04 PM PDT | Severe Thunderstorm Warning | SGX | San Diego | 41 min |
| Jul 28, 4:29 PM PDT | Flash Flood Warning | PSR | Imperial | 91 min |
| Jul 28, 4:43 PM PDT | Flash Flood Warning | SGX | San Diego | 32 min |
| Jul 28, 4:44 PM PDT | Severe Thunderstorm Warning | PSR | Imperial | 61 min |
| Jul 28, 5:18 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 57 min |
| Jul 28, 5:55 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Jul 28, 6:15 PM PDT | Flash Flood Warning | VEF | San Bernardino | 60 min |
| Jul 28, 6:15 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 60 min |
| Jul 29, 5:03 PM PDT | Flash Flood Warning | VEF | San Bernardino | 117 min |
| Aug 4, 7:03 PM PDT | Severe Thunderstorm Warning | PSR | Imperial | 47 min |
| Aug 4, 8:00 PM PDT | Severe Thunderstorm Warning | PSR | Imperial | 60 min |
| Aug 4, 8:33 PM PDT | Severe Thunderstorm Warning | MFR | Siskiyou | 32 min |
| Aug 4, 9:10 PM PDT | Severe Thunderstorm Warning | MFR | Siskiyou | 30 min |
| Aug 4, 9:45 PM PDT | Severe Thunderstorm Warning | MFR | Siskiyou | 45 min |
| Aug 6, 12:58 PM PDT | Severe Thunderstorm Warning | EKA | Trinity | 42 min |
| Aug 6, 12:58 PM PDT | Severe Thunderstorm Warning | EKA | Trinity | 87 min |
| Aug 6, 1:41 PM PDT | Flash Flood Warning | EKA | Trinity | 3 hr |
| Aug 9, 5:30 PM PDT | Severe Thunderstorm Warning | MFR | Siskiyou | 60 min |
| Aug 10, 1:05 PM PDT | Severe Thunderstorm Warning | MFR | Siskiyou | 30 min |
| Aug 10, 1:25 PM PDT | Severe Thunderstorm Warning | MFR | Siskiyou | 30 min |
| Aug 10, 2:15 PM PDT | Severe Thunderstorm Warning | REV | Mono | 45 min |
| Aug 10, 2:22 PM PDT | Severe Thunderstorm Warning | MFR | Siskiyou | 63 min |
| Aug 10, 3:05 PM PDT | Severe Thunderstorm Warning | MFR | Siskiyou | 60 min |
| Aug 19, 2:59 PM PDT | Severe Thunderstorm Warning | PSR | Riverside | 61 min |
| Aug 19, 5:50 PM PDT | Severe Thunderstorm Warning | SGX | San Diego | 55 min |
| Aug 19, 6:15 PM PDT | Severe Thunderstorm Warning | SGX | San Diego | 45 min |
| Aug 19, 6:40 PM PDT | Flash Flood Warning | SGX | San Diego | 80 min |
| Aug 19, 6:55 PM PDT | Severe Thunderstorm Warning | SGX | San Diego | 35 min |
| Aug 22, 4:28 PM PDT | Severe Thunderstorm Warning | STO | El Dorado | 32 min |
| Aug 22, 4:59 PM PDT | Severe Thunderstorm Warning | STO | Placer | 26 min |
| Aug 23, 2:25 PM PDT | Severe Thunderstorm Warning | STO | Shasta | 60 min |
| Aug 23, 3:00 PM PDT | Severe Thunderstorm Warning | MFR | Modoc, Siskiyou | 60 min |
| Aug 25, 6:36 PM PDT | Severe Thunderstorm Warning | PSR | Imperial | 54 min |
| Aug 27, 10:22 PM PDT | Severe Thunderstorm Warning | PSR | Riverside | 38 min |
| Aug 29, 6:18 PM PDT | Severe Thunderstorm Warning | SGX | San Diego | 57 min |
| Sep 12, 3:40 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 65 min |
| Sep 12, 4:07 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 53 min |
| Sep 12, 5:12 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 63 min |
| Sep 12, 6:17 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 58 min |
| Sep 12, 8:45 PM PDT | Severe Thunderstorm Warning | VEF | Inyo | 60 min |
| Sep 12, 8:45 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 60 min |
| Sep 12, 8:50 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Sep 12, 8:50 PM PDT | Flash Flood Warning | VEF | Inyo | 3 hr |
| Sep 12, 9:44 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 61 min |
| Sep 16, 5:55 AM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 50 min |
| Sep 22, 6:45 AM PDT | Severe Thunderstorm Warning | STO | San Joaquin | 45 min |
| Nov 30, 11:07 AM PST | Severe Thunderstorm Warning | EKA | Del Norte | 63 min |
| Nov 30, 11:12 AM PST | Severe Thunderstorm Warning | EKA | Humboldt | 63 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 | 65 |
| Flooding | |
| Flash Flood Warning | 71 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- San Bernardino County37
- Los Angeles County15
- San Diego County14
- Ventura County11
- Siskiyou County9
- Riverside County8
- Santa Barbara County7
- Imperial County7
- Inyo County6
- Calaveras County3
- Trinity County3
- Shasta County2
- Amador County2
- Tuolumne County2
- Placer County2
- Kern County2
- San Luis Obispo County2
- Madera County2
- San Mateo County1
- Sonoma County1
- Santa Clara County1
- Kings County1
- Tulare County1
- Nevada County1
- Plumas County1
- Sierra County1
- Colusa County1
- Glenn County1
- Tehama County1
- Alpine County1
- Mono County1
- El Dorado County1
- Modoc County1
- San Joaquin County1
- Del Norte County1
- Humboldt County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive19982000
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.