Alert archive / California / 2018
Weather alerts in California, September 2018
135 weather alerts in September 2018, 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 September 2018. Tap one for its archive.
- Alerts
- 135
- Warnings
- 24
- Watches
- 16
- Advisories
- 73
- Busiest day
- September 4, 201813 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 |
|---|---|---|---|---|
| Sep 1, 2:19 AM PDT | Gale Warning | MTR | 24 hr | |
| Sep 1, 5:07 AM PDT | Fire Weather Watch | EKA | 8 hr | |
| Sep 1, 6:42 AM PDT | Wind Advisory | LOX | 2 hr | |
| Sep 1, 1:03 PM PDT | Red Flag Warning | EKA | 16 hr | |
| Sep 1, 2:01 PM PDT | Wind Advisory | LOX | 13 hr | |
| Sep 2, 2:40 AM PDT | Small Craft Advisory | MTR | 3 days | |
| Sep 2, 4:44 AM PDT | Red Flag Warning | EKA | 30 hr | |
| Sep 3, 2:12 AM PDT | Hazardous Seas Warning | EKA | 40 hr | |
| Sep 4, 1:28 PM PDT | Special Weather Statement | HNX | Mariposa | 47 min |
| Sep 4, 2:20 PM PDT | Special Weather Statement | HNX | 40 min | |
| Sep 4, 2:42 PM PDT | Special Weather Statement | HNX | Tulare | 48 min |
| Sep 4, 3:05 PM PDT | Special Weather Statement | HNX | Mariposa | 40 min |
| Sep 4, 3:15 PM PDT | Special Weather Statement | HNX | Tulare | 45 min |
| Sep 4, 3:20 PM PDT | Flash Flood Warning | STO | Alpine, Tuolumne | 3 hr |
| Sep 4, 3:28 PM PDT | Special Weather Statement | HNX | Kern | 47 min |
| Sep 4, 3:47 PM PDT | Special Weather Statement | HNX | Tuolumne | 43 min |
| Sep 4, 4:02 PM PDT | Special Weather Statement | HNX | 43 min | |
| Sep 4, 4:17 PM PDT | Special Weather Statement | HNX | Kern | 43 min |
| Sep 4, 4:20 PM PDT | Special Weather Statement | HNX | Tuolumne | 40 min |
| Sep 4, 4:38 PM PDT | Special Weather Statement | HNX | Mariposa | 52 min |
| Sep 4, 4:47 PM PDT | Special Weather Statement | HNX | 43 min | |
| Sep 4, 5:08 PM PDT | Special Weather Statement | HNX | Mariposa | 52 min |
| Sep 4, 5:09 PM PDT | Areal Flood Advisory | VEF | Inyo | 2 hr |
| Sep 4, 5:12 PM PDT | Special Weather Statement | HNX | 48 min | |
| Sep 4, 5:27 PM PDT | Areal Flood Advisory | VEF | Inyo | 3 hr |
| Sep 4, 6:01 PM PDT | Small Craft Advisory | EKA | 23 hr | |
| Sep 4, 6:02 PM PDT | Special Weather Statement | HNX | Mariposa | 43 min |
| Sep 4, 7:15 PM PDT | Areal Flood Advisory | VEF | Inyo | 3 hr |
| Sep 5, 3:03 AM PDT | Small Craft Advisory | MTR | 15 days | |
| Sep 5, 8:52 PM PDT | Small Craft Advisory | MTR | 2 hr | |
| Sep 6, 2:14 AM PDT | Small Craft Advisory | EKA | 6 days | |
| Sep 6, 2:33 AM PDT | Small Craft Advisory | MTR | 15 days | |
| Sep 6, 3:08 AM PDT | Excessive Heat Watch | PSR | Imperial, Riverside, San Bernardino | 23 hr |
| Sep 6, 9:17 PM PDT | Small Craft Advisory | LOX | 6 hr | |
| Sep 7, 2:19 AM PDT | Excessive Heat Warning | PSR | Imperial, Riverside, San Bernardino | 42 hr |
| Sep 7, 3:05 AM PDT | Small Craft Advisory | LOX | 13 days | |
| Sep 7, 3:06 AM PDT | Small Craft Advisory | MTR | 35 hr | |
| Sep 7, 7:48 PM PDT | Heat Advisory | LOX | Los Angeles | 24 hr |
| Sep 8, 1:42 AM PDT | Dense Fog Advisory | LOX | 7 hr | |
| Sep 8, 2:27 AM PDT | Small Craft Advisory | MTR | 5 days | |
| Sep 8, 9:33 AM PDT | Beach Hazards Statement | LOX | Los Angeles | 64 hr |
| Sep 8, 8:30 PM PDT | Dense Fog Advisory | SGX | Orange, San Diego | 13 hr |
| Sep 8, 8:31 PM PDT | Dense Fog Advisory | LOX | 12 hr | |
| Sep 9, 2:59 AM PDT | Small Craft Advisory | LOX | 17 hr | |
| Sep 9, 2:02 PM PDT | Small Craft Advisory | MTR | 31 hr | |
| Sep 9, 3:01 PM PDT | Fire Weather Watch | REV | El Dorado, Lassen, Modoc, Nevada, Placer, Plumas and 1 more | 20 hr |
| Sep 10, 10:22 AM PDT | Red Flag Warning | STO | 61 hr | |
| Sep 10, 11:10 AM PDT | Red Flag Warning | REV | El Dorado, Lassen, Modoc, Nevada, Placer, Plumas and 1 more | 66 hr |
| Sep 10, 1:38 PM PDT | Frost Advisory | MFR | Modoc, Siskiyou | 19 hr |
| Sep 10, 1:38 PM PDT | Freeze Watch | MFR | Modoc, Siskiyou | 22 hr |
| Sep 10, 2:39 PM PDT | Lake Wind Advisory | REV | Alpine, El Dorado, Nevada, Placer | 53 hr |
| Sep 11, 2:12 AM PDT | Small Craft Advisory | MTR | 43 hr | |
| Sep 11, 2:59 AM PDT | Small Craft Advisory | LOX | 3 days | |
| Sep 11, 4:02 AM PDT | Red Flag Warning | EKA | 21 hr | |
| Sep 11, 12:05 PM PDT | Frost Advisory | MFR | Modoc, Siskiyou | 21 hr |
| Sep 11, 2:06 PM PDT | Frost Advisory | EKA | Mendocino, Trinity | 18 hr |
| Sep 11, 2:27 PM PDT | Red Flag Warning | VEF | Inyo, Tulare | 4 days |
| Sep 12, 1:35 PM PDT | Freeze Watch | MFR | Modoc, Siskiyou | 13 hr |
| Sep 12, 2:41 PM PDT | Small Craft Advisory | MTR | 30 hr | |
| Sep 12, 6:24 PM PDT | Dust Storm Advisory | PSR | Imperial | 96 min |
| Sep 13, 2:19 AM PDT | Freeze Warning | MFR | Modoc, Siskiyou | 31 hr |
| Sep 13, 1:46 PM PDT | Freeze Watch | MFR | Modoc, Siskiyou | 25 hr |
| Sep 13, 2:50 PM PDT | Small Craft Advisory | MTR | 36 hr | |
| Sep 14, 3:12 AM PDT | Small Craft Advisory | LOX | 72 hr | |
| Sep 14, 11:15 AM PDT | Beach Hazards Statement | SGX | Orange | 33 hr |
| Sep 14, 2:11 PM PDT | Small Craft Advisory | MTR | 31 hr | |
| Sep 14, 2:31 PM PDT | Lake Wind Advisory | REV | Alpine, El Dorado, Nevada, Placer | 29 hr |
| Sep 14, 2:39 PM PDT | Freeze Warning | MFR | Modoc, Siskiyou | 18 hr |
| Sep 14, 9:18 PM PDT | Small Craft Advisory | MTR | 102 min | |
| Sep 15, 2:46 AM PDT | Small Craft Advisory | MTR | 42 hr | |
| Sep 16, 2:28 AM PDT | Small Craft Advisory | MTR | 5 days | |
| Sep 16, 2:48 AM PDT | Small Craft Advisory | LOX | 18 hr | |
| Sep 17, 2:46 AM PDT | Small Craft Advisory | LOX | 24 hr | |
| Sep 17, 2:50 AM PDT | Small Craft Advisory | MTR | 44 hr | |
| Sep 17, 3:26 AM PDT | Small Craft Advisory | EKA | 5 days | |
| Sep 18, 2:15 AM PDT | Small Craft Advisory | MTR | 49 hr | |
| Sep 18, 2:38 AM PDT | Small Craft Advisory | LOX | 23 hr | |
| Sep 18, 12:05 PM PDT | Fire Weather Watch | STO | 23 hr | |
| Sep 18, 12:32 PM PDT | Fire Weather Watch | MTR | 23 hr | |
| Sep 19, 2:03 AM PDT | Small Craft Advisory | LOX | 25 hr | |
| Sep 19, 2:13 AM PDT | Small Craft Advisory | MTR | 19 hr | |
| Sep 19, 11:15 AM PDT | Red Flag Warning | STO | 32 hr | |
| Sep 19, 11:37 AM PDT | Red Flag Warning | MTR | San Mateo, Santa Clara, Santa Cruz | 29 hr |
| Sep 19, 10:11 PM PDT | Areal Flood Advisory | VEF | San Bernardino | 2 hr |
| Sep 21, 2:42 AM PDT | Small Craft Advisory | MTR | 4 days | |
| Sep 21, 1:59 PM PDT | Small Craft Advisory | MTR | 67 hr | |
| Sep 21, 8:52 PM PDT | Small Craft Advisory | EKA | 3 days | |
| Sep 22, 3:04 AM PDT | Gale Watch | EKA | 12 hr | |
| Sep 22, 3:07 AM PDT | Small Craft Advisory | MTR | 11 hr | |
| Sep 22, 9:35 AM PDT | Fire Weather Watch | MTR | 24 hr | |
| Sep 22, 12:48 PM PDT | Fire Weather Watch | STO | 24 hr | |
| Sep 22, 2:35 PM PDT | Small Craft Advisory | LOX | 36 hr | |
| Sep 22, 3:06 PM PDT | Gale Warning | EKA | 54 hr | |
| Sep 22, 5:38 PM PDT | Small Craft Advisory | LOX | 9 hr | |
| Sep 23, 4:09 AM PDT | Fire Weather Watch | MFR | Siskiyou | 6 hr |
| Sep 23, 9:09 AM PDT | Small Craft Advisory | LOX | 18 hr | |
| Sep 23, 9:49 AM PDT | Red Flag Warning | MFR | Siskiyou | 49 hr |
| Sep 23, 10:43 AM PDT | Red Flag Warning | EKA | 23 hr | |
| Sep 23, 12:41 PM PDT | Red Flag Warning | STO | 52 hr | |
| Sep 23, 1:46 PM PDT | Small Craft Advisory | MTR | 7 hr | |
| Sep 24, 3:21 AM PDT | Red Flag Warning | MTR | 38 hr | |
| Sep 24, 9:32 AM PDT | Small Craft Advisory | EKA | 11 hr | |
| Sep 24, 9:08 PM PDT | Small Craft Advisory | EKA | 18 hr | |
| Sep 24, 9:08 PM PDT | Hazardous Seas Warning | EKA | 18 hr | |
| Sep 25, 1:07 AM PDT | Red Flag Warning | EKA | 18 hr | |
| Sep 25, 2:51 PM PDT | Small Craft Advisory | EKA | 11 hr | |
| Sep 26, 2:47 PM PDT | Fire Weather Watch | REV | El Dorado, Lassen, Modoc, Nevada, Placer, Sierra | 38 hr |
| Sep 26, 6:12 PM PDT | Small Craft Advisory | MTR | 4 hr | |
| Sep 26, 6:12 PM PDT | Small Craft Advisory | MTR | 28 hr | |
| Sep 27, 8:33 AM PDT | Small Craft Advisory | LOX | 18 hr | |
| Sep 27, 1:16 PM PDT | Beach Hazards Statement | LOX | Los Angeles | 39 hr |
| Sep 27, 1:44 PM PDT | Beach Hazards Statement | SGX | Orange, San Diego | 5 days |
| Sep 27, 2:58 PM PDT | Fire Weather Watch | MFR | Modoc | 20 hr |
| Sep 28, 2:36 AM PDT | Lake Wind Advisory | REV | Alpine, El Dorado, Nevada, Placer | 50 hr |
| Sep 28, 5:10 AM PDT | Red Flag Warning | REV | El Dorado, Nevada, Placer, Sierra | 39 hr |
| Sep 28, 11:50 AM PDT | High Surf Advisory | LOX | Los Angeles | 4 days |
| Sep 28, 12:00 PM PDT | High Surf Advisory | SGX | Orange | 4 days |
| Sep 28, 1:03 PM PDT | Small Craft Advisory | MTR | 9 hr | |
| Sep 28, 2:01 PM PDT | Flash Flood Watch | PSR | Imperial, Riverside, San Bernardino | 5 days |
| Sep 28, 2:20 PM PDT | Flash Flood Watch | VEF | Inyo, San Bernardino | 4 days |
| Sep 29, 2:27 AM PDT | Small Craft Advisory | EKA | 18 hr | |
| Sep 29, 3:21 AM PDT | Wind Advisory | LOX | 7 hr | |
| Sep 29, 3:59 AM PDT | Beach Hazards Statement | LOX | 3 days | |
| Sep 30, 12:28 PM PDT | Dust Storm Advisory | PSR | Imperial | 47 min |
| Sep 30, 12:58 PM PDT | Severe Thunderstorm Warning | PSR | Imperial | 32 min |
| Sep 30, 1:10 PM PDT | Areal Flood Advisory | PSR | Imperial | 2 hr |
| Sep 30, 1:19 PM PDT | Dust Storm Advisory | PSR | Imperial, Riverside | 41 min |
| Sep 30, 2:12 PM PDT | Dust Storm Advisory | PSR | Imperial, Riverside | 48 min |
| Sep 30, 2:38 PM PDT | Special Weather Statement | PSR | Imperial | 37 min |
| Sep 30, 2:51 PM PDT | Areal Flood Advisory | PSR | Imperial, Riverside | 114 min |
| Sep 30, 2:55 PM PDT | Dust Storm Advisory | PSR | Imperial, Riverside | 65 min |
| Sep 30, 3:01 PM PDT | Dust Storm Advisory | PSR | Riverside | 44 min |
| Sep 30, 3:25 PM PDT | Special Weather Statement | PSR | Imperial | 50 min |
| Sep 30, 3:26 PM PDT | Blowing Dust Advisory | PSR | Imperial, Riverside | 4 hr |
| Sep 30, 3:54 PM PDT | Dust Storm Warning | PSR | Riverside | 36 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 | 1 |
| Special Weather Statement | 17 |
| Flooding | |
| Flash Flood Warning | 1 |
| Flash Flood Watch | 2 |
| Areal Flood Advisory | 6 |
| Heat | |
| Excessive Heat Warning | 1 |
| Excessive Heat Watch | 1 |
| Heat Advisory | 1 |
| Cold | |
| Freeze Warning | 2 |
| Freeze Watch | 3 |
| Frost Advisory | 3 |
| Wind and dust | |
| Dust Storm Warning | 1 |
| Blowing Dust Advisory | 1 |
| Dust Storm Advisory | 6 |
| Lake Wind Advisory | 3 |
| Wind Advisory | 3 |
| Fire | |
| Red Flag Warning | 14 |
| Fire Weather Watch | 9 |
| Fog and smoke | |
| Dense Fog Advisory | 3 |
| Coast and beach | |
| High Surf Advisory | 2 |
| Beach Hazards Statement | 5 |
| Marine | |
| Gale Warning | 2 |
| Hazardous Seas Warning | 2 |
| Gale Watch | 1 |
| Small Craft Advisory | 45 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Imperial County14
- Modoc County11
- Riverside County10
- Siskiyou County9
- El Dorado County7
- Nevada County7
- Placer County7
- Mariposa County5
- Inyo County5
- San Bernardino County5
- Alpine County4
- Los Angeles County4
- Orange County4
- Sierra County4
- Tulare County3
- Tuolumne County3
- Lassen County3
- Kern County2
- San Diego County2
- Plumas County2
- Mendocino County1
- Trinity County1
- San Mateo County1
- Santa Clara County1
- Santa Cruz County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20172019
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.