Alert archive / California / Severe Thunderstorm Warnings
Severe Thunderstorm Warnings in California, 1998
117 severe thunderstorm warnings in 1998. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of severe thunderstorm warnings reaches back to 1986.
Severe Thunderstorm Warnings by county
Each county as a circle sized by its count in 1998. Tap one for its archive.
- Severe Thunderstorm Warnings
- 117
- Busiest month
- August27 severe thunderstorm warnings
- Busiest day
- May 5, 19987 severe thunderstorm warnings
Over time
By month
The alerts
Every alert, in the order issued. Times are local, Pacific Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 29, 12:44 PM PST | Severe Thunderstorm Warning | HNX | Fresno, Kings | 46 min |
| Jan 29, 2:12 PM PST | Severe Thunderstorm Warning | STO | Sacramento | 33 min |
| Feb 3, 2:55 AM PST | Severe Thunderstorm Warning | LOX | San Luis Obispo, Santa Barbara | 110 min |
| Feb 3, 5:30 AM PST | Severe Thunderstorm Warning | LOX | Ventura | 60 min |
| Feb 3, 6:39 AM PST | Severe Thunderstorm Warning | LOX | Los Angeles | 66 min |
| Feb 3, 7:50 AM PST | Severe Thunderstorm Warning | LOX | Los Angeles | 55 min |
| Feb 3, 10:05 AM PST | Severe Thunderstorm Warning | LOX | Ventura | 55 min |
| Feb 6, 7:57 AM PST | Severe Thunderstorm Warning | LOX | Santa Barbara | 63 min |
| Feb 6, 8:35 AM PST | Severe Thunderstorm Warning | LOX | Los Angeles, Ventura | 70 min |
| Feb 6, 9:10 AM PST | Severe Thunderstorm Warning | LOX | Ventura | 95 min |
| Feb 6, 9:15 AM PST | Severe Thunderstorm Warning | LOX | San Luis Obispo, Santa Barbara | 60 min |
| Feb 6, 9:25 AM PST | Severe Thunderstorm Warning | LOX | Los Angeles, Ventura | 65 min |
| Feb 6, 2:02 PM PST | Severe Thunderstorm Warning | MTR | Santa Clara, Santa Cruz | 58 min |
| Feb 6, 4:37 PM PST | Severe Thunderstorm Warning | STO | Calaveras, Stanislaus | 113 min |
| Feb 7, 5:53 PM PST | Severe Thunderstorm Warning | MTR | Santa Clara, Santa Cruz | 37 min |
| Feb 8, 7:00 PM PST | Severe Thunderstorm Warning | SGX | San Diego | 60 min |
| Feb 8, 8:10 PM PST | Severe Thunderstorm Warning | SGX | San Diego | 60 min |
| Feb 14, 4:37 PM PST | Severe Thunderstorm Warning | STO | Shasta, Tehama | 48 min |
| Feb 14, 5:38 PM PST | Severe Thunderstorm Warning | HNX | Tulare | 37 min |
| Feb 16, 10:40 PM PST | Severe Thunderstorm Warning | SGX | San Diego | 50 min |
| Feb 19, 2:55 PM PST | Severe Thunderstorm Warning | LOX | San Luis Obispo, Santa Barbara | 50 min |
| Feb 19, 3:45 PM PST | Severe Thunderstorm Warning | LOX | San Luis Obispo, Santa Barbara | 45 min |
| Feb 23, 10:25 PM PST | Severe Thunderstorm Warning | SGX | San Diego | 50 min |
| Mar 13, 12:43 PM PST | Severe Thunderstorm Warning | HNX | Fresno, Kings, Madera | 2 hr |
| Mar 13, 2:34 PM PST | Severe Thunderstorm Warning | HNX | Kern | 56 min |
| Mar 24, 1:09 PM PST | Severe Thunderstorm Warning | HNX | Madera, Merced | 66 min |
| Mar 24, 2:35 PM PST | Severe Thunderstorm Warning | HNX | Fresno, Kings | 40 min |
| Mar 24, 2:35 PM PST | Severe Thunderstorm Warning | HNX | Kern | 40 min |
| Mar 24, 2:47 PM PST | Severe Thunderstorm Warning | HNX | Mariposa | 28 min |
| Mar 24, 4:31 PM PST | Severe Thunderstorm Warning | STO | Sacramento, Solano | 49 min |
| Mar 24, 5:25 PM PST | Severe Thunderstorm Warning | STO | Sacramento, San Joaquin | 25 min |
| Mar 24, 5:50 PM PST | Severe Thunderstorm Warning | STO | Sacramento | 25 min |
| Mar 25, 1:29 PM PST | Severe Thunderstorm Warning | SGX | San Diego | 61 min |
| Mar 28, 4:30 PM PST | Severe Thunderstorm Warning | HNX | Madera, Merced | 30 min |
| Mar 28, 5:19 PM PST | Severe Thunderstorm Warning | HNX | Madera, Merced | 26 min |
| Apr 5, 3:15 PM PDT | Severe Thunderstorm Warning | STO | Colusa, Glenn | 50 min |
| Apr 5, 6:53 PM PDT | Severe Thunderstorm Warning | HNX | Fresno, Merced | 57 min |
| Apr 5, 7:35 PM PDT | Severe Thunderstorm Warning | STO | Nevada | 50 min |
| Apr 23, 4:27 PM PDT | Severe Thunderstorm Warning | STO | Calaveras, San Joaquin | 43 min |
| May 4, 3:42 PM PDT | Severe Thunderstorm Warning | STO | San Joaquin, Stanislaus | 43 min |
| May 4, 4:03 PM PDT | Severe Thunderstorm Warning | HNX | Kern | 57 min |
| May 4, 4:48 PM PDT | Severe Thunderstorm Warning | STO | Calaveras, San Joaquin, Stanislaus | 47 min |
| May 4, 5:54 PM PDT | Severe Thunderstorm Warning | HNX | Kings | 31 min |
| May 4, 6:38 PM PDT | Severe Thunderstorm Warning | HNX | Kings | 37 min |
| May 4, 7:49 PM PDT | Severe Thunderstorm Warning | STO | Calaveras, Tuolumne | 31 min |
| May 5, 2:11 PM PDT | Severe Thunderstorm Warning | HNX | Kern | 54 min |
| May 5, 2:23 PM PDT | Severe Thunderstorm Warning | HNX | Fresno, Kings | 57 min |
| May 5, 3:27 PM PDT | Severe Thunderstorm Warning | MTR | San Benito | 63 min |
| May 5, 4:38 PM PDT | Severe Thunderstorm Warning | HNX | Merced | 47 min |
| May 7, 5:01 PM PDT | Severe Thunderstorm Warning | SGX | San Bernardino | 59 min |
| May 16, 2:39 PM PDT | Severe Thunderstorm Warning | STO | Glenn | 61 min |
| Jun 2, 3:38 PM PDT | Severe Thunderstorm Warning | STO | Colusa, Glenn | 37 min |
| Jun 6, 3:35 PM PDT | Severe Thunderstorm Warning | STO | Nevada, Placer | 60 min |
| Jun 6, 4:52 PM PDT | Severe Thunderstorm Warning | HNX | Fresno, Kings, Tulare | 58 min |
| Jun 6, 6:24 PM PDT | Severe Thunderstorm Warning | HNX | Fresno | 61 min |
| Jun 6, 7:33 PM PDT | Severe Thunderstorm Warning | STO | Shasta, Tehama | 42 min |
| Jun 12, 3:15 PM PDT | Severe Thunderstorm Warning | EKA | Mendocino | 45 min |
| Jun 12, 4:03 PM PDT | Severe Thunderstorm Warning | EKA | Mendocino, Trinity | 32 min |
| Jun 12, 4:16 PM PDT | Severe Thunderstorm Warning | STO | Shasta | 44 min |
| Jun 12, 4:52 PM PDT | Severe Thunderstorm Warning | STO | Shasta | 53 min |
| Jun 12, 5:23 PM PDT | Severe Thunderstorm Warning | EKA | Trinity | 47 min |
| Jun 12, 6:10 PM PDT | Severe Thunderstorm Warning | EKA | Trinity | 60 min |
| Jun 12, 7:10 PM PDT | Severe Thunderstorm Warning | EKA | Trinity | 50 min |
| Jul 2, 5:24 PM PDT | Severe Thunderstorm Warning | MFR | Modoc, Siskiyou | 31 min |
| Jul 20, 12:53 AM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 57 min |
| Jul 21, 6:21 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 64 min |
| Jul 22, 3:42 PM PDT | Severe Thunderstorm Warning | MFR | Siskiyou | 58 min |
| Jul 22, 4:36 PM PDT | Severe Thunderstorm Warning | MFR | Siskiyou | 59 min |
| Jul 22, 5:35 PM PDT | Severe Thunderstorm Warning | MFR | Siskiyou | 50 min |
| Jul 22, 6:42 PM PDT | Severe Thunderstorm Warning | MFR | Siskiyou | 48 min |
| Jul 23, 4:55 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 65 min |
| Jul 30, 3:57 PM PDT | Severe Thunderstorm Warning | REV | Lassen | 63 min |
| Aug 8, 5:22 PM PDT | Severe Thunderstorm Warning | PSR | Imperial | 48 min |
| Aug 9, 2:09 PM PDT | Severe Thunderstorm Warning | SGX | San Bernardino | 51 min |
| Aug 11, 12:22 PM PDT | Severe Thunderstorm Warning | PSR | Riverside | 48 min |
| Aug 11, 4:48 PM PDT | Severe Thunderstorm Warning | SGX | San Bernardino | 27 min |
| Aug 11, 4:50 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 60 min |
| Aug 11, 4:55 PM PDT | Severe Thunderstorm Warning | LOX | Los Angeles | 65 min |
| Aug 11, 6:20 PM PDT | Severe Thunderstorm Warning | LOX | Los Angeles | 40 min |
| Aug 12, 2:11 PM PDT | Severe Thunderstorm Warning | SGX | Riverside | 49 min |
| Aug 12, 3:47 PM PDT | Severe Thunderstorm Warning | SGX | San Diego | 73 min |
| Aug 12, 8:29 PM PDT | Severe Thunderstorm Warning | PSR | Riverside | 46 min |
| Aug 12, 9:34 PM PDT | Severe Thunderstorm Warning | PSR | Riverside | 46 min |
| Aug 12, 10:22 PM PDT | Severe Thunderstorm Warning | PSR | Imperial, Riverside | 63 min |
| Aug 13, 3:10 PM PDT | Severe Thunderstorm Warning | SGX | San Bernardino | 40 min |
| Aug 14, 2:21 PM PDT | Severe Thunderstorm Warning | STO | Alpine | 59 min |
| Aug 14, 2:39 PM PDT | Severe Thunderstorm Warning | HNX | Mariposa | 51 min |
| Aug 14, 3:41 PM PDT | Severe Thunderstorm Warning | SGX | San Diego | 49 min |
| Aug 14, 4:00 PM PDT | Severe Thunderstorm Warning | REV | Placer | 60 min |
| Aug 14, 4:37 PM PDT | Severe Thunderstorm Warning | SGX | San Diego | 53 min |
| Aug 14, 5:00 PM PDT | Severe Thunderstorm Warning | REV | Placer | 4 hr |
| Aug 16, 5:36 PM PDT | Severe Thunderstorm Warning | PSR | Imperial | 64 min |
| Aug 24, 4:34 PM PDT | Severe Thunderstorm Warning | SGX | San Diego | 66 min |
| Aug 30, 10:06 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 39 min |
| Aug 31, 2:35 PM PDT | Severe Thunderstorm Warning | SGX | San Diego | 55 min |
| Aug 31, 3:07 PM PDT | Severe Thunderstorm Warning | HNX | Kern | 58 min |
| Aug 31, 3:38 PM PDT | Severe Thunderstorm Warning | LOX | Los Angeles | 67 min |
| Aug 31, 4:07 PM PDT | Severe Thunderstorm Warning | SGX | Riverside | 58 min |
| Aug 31, 4:44 PM PDT | Severe Thunderstorm Warning | LOX | Los Angeles | 76 min |
| Aug 31, 7:28 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 47 min |
| Aug 31, 9:08 PM PDT | Severe Thunderstorm Warning | PSR | Imperial, Riverside | 47 min |
| Sep 2, 2:12 PM PDT | Severe Thunderstorm Warning | SGX | Riverside | 63 min |
| Sep 2, 2:57 PM PDT | Severe Thunderstorm Warning | HNX | Kern | 48 min |
| Sep 2, 3:01 PM PDT | Severe Thunderstorm Warning | LOX | Los Angeles | 89 min |
| Sep 2, 3:25 PM PDT | Severe Thunderstorm Warning | LOX | Ventura | 65 min |
| Sep 2, 3:30 PM PDT | Severe Thunderstorm Warning | LOX | Los Angeles | 90 min |
| Sep 2, 4:28 PM PDT | Severe Thunderstorm Warning | LOX | Ventura | 62 min |
| Sep 2, 4:48 PM PDT | Severe Thunderstorm Warning | LOX | Los Angeles | 72 min |
| Sep 3, 5:10 PM PDT | Severe Thunderstorm Warning | MTR | San Benito | 110 min |
| Sep 3, 6:12 PM PDT | Severe Thunderstorm Warning | MTR | San Benito | 53 min |
| Sep 4, 3:35 PM PDT | Severe Thunderstorm Warning | STO | Sierra | 45 min |
| Sep 7, 2:52 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 63 min |
| Sep 7, 2:53 PM PDT | Severe Thunderstorm Warning | MTR | San Benito | 2 hr |
| Sep 8, 3:32 PM PDT | Severe Thunderstorm Warning | PSR | Imperial | 48 min |
| Sep 9, 3:52 PM PDT | Severe Thunderstorm Warning | PSR | Imperial | 38 min |
| Sep 9, 4:38 PM PDT | Severe Thunderstorm Warning | PSR | Imperial, Riverside | 52 min |
| Sep 9, 5:35 PM PDT | Severe Thunderstorm Warning | EKA | Trinity | 60 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Los Angeles County11
- San Bernardino County11
- San Diego County10
- Riverside County9
- Fresno County7
- Kings County7
- Ventura County7
- Imperial County7
- Kern County6
- Santa Barbara County5
- Merced County5
- Trinity County5
- Siskiyou County5
- Sacramento County4
- San Luis Obispo County4
- Calaveras County4
- Shasta County4
- Madera County4
- San Joaquin County4
- San Benito County4
- Stanislaus County3
- Glenn County3
- Placer County3
- Santa Clara County2
- Santa Cruz County2
- Tehama County2
- Tulare County2
- Mariposa County2
- Colusa County2
- Nevada County2
- Mendocino County2
- Solano County1
- Tuolumne County1
- Modoc County1
- Lassen County1
- Alpine County1
- Sierra County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive19971999
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. Warning verification from the Mesonet's Cow. Rebuilt daily.