Alert archive / California / Mesoscale Discussions
Mesoscale Discussions in California, 2008
24 mesoscale discussions in 2008. 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 2008. Tap one for its archive.
- Mesoscale Discussions
- 24
- Busiest month
- January17 mesoscale discussions
- Busiest day
- January 5, 20083 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 |
|---|---|---|---|---|
| Jan 4, 3:31 AM PST | Mesoscale Discussion | SPC | Nevada, Placer, Plumas, Sierra, Siskiyou | 3 hr |
| Jan 4, 10:37 AM PST | Mesoscale Discussion | SPC | Alpine, El Dorado, Mono, Nevada, Placer, Plumas and 2 more | 4 hr |
| Jan 4, 4:39 PM PST | Mesoscale Discussion | SPC | Alpine, Tuolumne | 5 hr |
| Jan 5, 10:46 AM PST | Mesoscale Discussion | SPC | Alameda, Contra Costa, Marin, San Mateo, Santa Cruz | 119 min |
| Jan 5, 11:37 AM PST | Mesoscale Discussion | SPC | El Dorado, Nevada, Placer, Sierra, Tuolumne | 5 hr |
| Jan 5, 4:11 PM PST | Mesoscale Discussion | SPC | Alpine, Tuolumne | 5 hr |
| Jan 8, 4:19 AM PST | Mesoscale Discussion | SPC | Shasta, Siskiyou | 3 hr |
| Jan 8, 9:37 AM PST | Mesoscale Discussion | SPC | El Dorado, Nevada, Placer, Plumas, Tuolumne | 6 hr |
| Jan 24, 10:26 AM PST | Mesoscale Discussion | SPC | Amador, Calaveras, El Dorado, Mariposa, Tulare, Tuolumne | 3 hr |
| Jan 24, 1:57 PM PST | Mesoscale Discussion | SPC | Alpine, Mariposa, Tuolumne | 3 hr |
| Jan 27, 9:39 AM PST | Mesoscale Discussion | SPC | Ventura | 2 hr |
| Jan 27, 9:53 AM PST | Mesoscale Discussion | SPC | Siskiyou, Trinity | 6 hr |
| Jan 27, 12:10 PM PST | Mesoscale Discussion | SPC | Fresno, Kings, Merced, Monterey, San Benito, San Luis Obispo | 2 hr |
| Jan 27, 4:06 PM PST | Mesoscale Discussion | SPC | Fresno, Kern, Kings, Los Angeles, Madera, Mariposa and 7 more | 54 min |
| Jan 27, 4:09 PM PST | Mesoscale Discussion | SPC | El Dorado, Lassen, Modoc, Nevada, Placer, Plumas and 3 more | 6 hr |
| Jan 27, 10:38 PM PST | Mesoscale Discussion | SPC | El Dorado, Nevada, Placer, Tuolumne | 6 hr |
| Jan 31, 9:57 AM PST | Mesoscale Discussion | SPC | El Dorado, Lake, Lassen, Nevada, Placer, Plumas and 4 more | 4 hr |
| Feb 2, 8:40 PM PST | Mesoscale Discussion | SPC | El Dorado, Nevada, Placer, Plumas, Sierra, Tulare and 1 more | 6 hr |
| Feb 23, 2:58 PM PST | Mesoscale Discussion | SPC | Alpine, Tuolumne | 6 hr |
| Jun 28, 12:54 PM PDT | Mesoscale Discussion | SPC | Del Norte, Humboldt, Lassen, Modoc, Plumas, Shasta and 3 more | 66 min |
| Aug 25, 11:13 AM PDT | Mesoscale Discussion | SPC | San Diego | 3 hr |
| Sep 11, 11:49 AM PDT | Mesoscale Discussion | SPC | Imperial | 116 min |
| Nov 25, 10:00 PM PST | Mesoscale Discussion | SPC | Kern, Kings, Los Angeles, Orange, San Diego, San Luis Obispo and 2 more | 2 hr |
| Dec 15, 3:00 AM PST | Mesoscale Discussion | SPC | Amador, El Dorado, Madera, Mariposa, Nevada, Placer and 2 more | 4 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Tuolumne County12
- Nevada County9
- Placer County9
- El Dorado County9
- Plumas County7
- Sierra County6
- Siskiyou County6
- Alpine County5
- Mariposa County4
- Tulare County4
- Shasta County3
- Ventura County3
- Trinity County3
- Kings County3
- San Luis Obispo County3
- Lassen County3
- Amador County2
- Fresno County2
- Merced County2
- Monterey County2
- San Benito County2
- Kern County2
- Los Angeles County2
- Madera County2
- Santa Barbara County2
- Modoc County2
- San Diego County2
- Mono County1
- Alameda County1
- Contra Costa County1
- Marin County1
- San Mateo County1
- Santa Cruz County1
- Calaveras County1
- Lake County1
- Del Norte County1
- Humboldt County1
- Tehama County1
- Imperial County1
- Orange County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20072009
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.