Alert archive / California / Mesoscale Discussions
Mesoscale Discussions in California, 2014
14 mesoscale discussions in 2014. 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 mesoscale discussions reaches back to 2003.
Mesoscale Discussions by county
Each county as a circle sized by its count in 2014. Tap one for its archive.
- Mesoscale Discussions
- 14
- Busiest month
- December5 mesoscale discussions
- Busiest day
- September 26, 20142 mesoscale discussions
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 28, 11:32 AM PST | Mesoscale Discussion | SPC | Fresno, Kern, Madera, Tulare | 118 min |
| Apr 1, 2:43 PM PDT | Mesoscale Discussion | SPC | Alameda, Amador, Calaveras, Colusa, Contra Costa, Fresno and 15 more | 3 hr |
| May 19, 3:09 PM PDT | Mesoscale Discussion | SPC | Colusa, Glenn, Tehama | 2 hr |
| Jul 22, 4:45 PM PDT | Mesoscale Discussion | SPC | Lassen, Modoc, Siskiyou, Trinity | 3 hr |
| Aug 11, 2:42 PM PDT | Mesoscale Discussion | SPC | Butte, Lassen, Modoc, Nevada, Placer, Plumas and 4 more | 2 hr |
| Aug 21, 2:39 PM PDT | Mesoscale Discussion | SPC | Imperial | 2 hr |
| Sep 20, 5:33 PM PDT | Mesoscale Discussion | SPC | Amador, Calaveras, El Dorado, Fresno, Madera, Mariposa and 3 more | 117 min |
| Sep 25, 5:40 PM PDT | Mesoscale Discussion | SPC | Glenn | 2 hr |
| Sep 26, 3:09 PM PDT | Mesoscale Discussion | SPC | Imperial | 66 min |
| Dec 2, 9:46 PM PST | Mesoscale Discussion | SPC | Marin, San Mateo | 119 min |
| Dec 3, 12:35 AM PST | Mesoscale Discussion | SPC | Santa Cruz | 85 min |
| Dec 11, 12:01 PM PST | Mesoscale Discussion | SPC | Del Norte, Humboldt | 59 min |
| Dec 11, 9:26 PM PST | Mesoscale Discussion | SPC | Santa Barbara, Ventura | 3 hr |
| Dec 17, 1:24 AM PST | Mesoscale Discussion | SPC | Orange, Ventura | 2 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Fresno County3
- Madera County3
- Tulare County2
- Amador County2
- Calaveras County2
- Colusa County2
- Mariposa County2
- Sacramento County2
- Santa Cruz County2
- Glenn County2
- Tehama County2
- Lassen County2
- Modoc County2
- Siskiyou County2
- Imperial County2
- Ventura County2
- Kern County1
- Alameda County1
- Contra Costa County1
- Kings County1
- Merced County1
- Monterey County1
- San Benito County1
- San Joaquin County1
- San Luis Obispo County1
- Santa Clara County1
- Solano County1
- Stanislaus County1
- Sutter County1
- Yolo County1
- Trinity County1
- Butte County1
- Nevada County1
- Placer County1
- Plumas County1
- Shasta County1
- Sierra County1
- El Dorado County1
- Tuolumne County1
- Marin County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20132015
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.