Alert archive / California / Mesoscale Discussions

Mesoscale Discussions in California, 2004

32 mesoscale discussions in 2004. 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 2004. Tap one for its archive.

Mesoscale Discussions
32
Busiest month
December16 mesoscale discussions
Busiest day
December 30, 20044 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.

IssuedProductOfficeCountiesLasted
Jan 1, 1:48 AM PSTMesoscale DiscussionSPCShasta, Siskiyou, Trinity2 hr
Feb 2, 1:40 AM PSTMesoscale DiscussionSPCAmador, El Dorado, Mariposa, Nevada, Placer, Plumas and 4 more5 hr
Feb 2, 12:31 PM PSTMesoscale DiscussionSPCAlpine, El Dorado, Mariposa, Nevada, Placer, Tuolumne6 hr
Feb 17, 3:02 PM PSTMesoscale DiscussionSPCAlameda, Santa Clara, Santa Cruz118 min
Feb 18, 12:57 PM PSTMesoscale DiscussionSPCKings, Merced, San Benito, Santa Clara, Stanislaus2 hr
Feb 25, 5:24 AM PSTMesoscale DiscussionSPCAlpine, El Dorado, Lassen, Nevada, Placer, Plumas and 4 more6 hr
Aug 13, 11:25 AM PDTMesoscale DiscussionSPCImperial, Riverside, San Bernardino3 hr
Aug 14, 1:16 PM PDTMesoscale DiscussionSPCRiverside, San Bernardino2 hr
Aug 15, 2:38 PM PDTMesoscale DiscussionSPCInyo, San Bernardino2 hr
Aug 17, 1:17 PM PDTMesoscale DiscussionSPCSan Bernardino118 min
Oct 17, 1:59 PM PDTMesoscale DiscussionSPCAmador, Butte, Calaveras, Sacramento, San Joaquin, Shasta and 4 more3 hr
Oct 19, 1:17 AM PDTMesoscale DiscussionSPCLassen, Plumas, Sierra, Siskiyou6 hr
Oct 20, 7:18 AM PDTMesoscale DiscussionSPCSan Diego117 min
Nov 21, 3:15 AM PSTMesoscale DiscussionSPCSan Diego6 hr
Nov 21, 6:16 AM PSTMesoscale DiscussionSPCSan Diego119 min
Nov 27, 9:43 AM PSTMesoscale DiscussionSPCAlpine, El Dorado, Mono, Nevada, Placer, Sierra5 hr
Dec 6, 3:01 PM PSTMesoscale DiscussionSPCNevada, Plumas, Sierra, Siskiyou, Trinity4 hr
Dec 6, 8:18 PM PSTMesoscale DiscussionSPCAlpine, Amador, Calaveras, El Dorado, Lassen, Mariposa and 8 more6 hr
Dec 7, 3:55 AM PSTMesoscale DiscussionSPCAmador, El Dorado, Tuolumne6 hr
Dec 7, 10:57 PM PSTMesoscale DiscussionSPCNevada, Placer, Shasta, Sierra6 hr
Dec 28, 4:48 AM PSTMesoscale DiscussionSPCAmador, Calaveras, Madera, Mariposa, Tulare, Tuolumne4 hr
Dec 28, 10:36 AM PSTMesoscale DiscussionSPCMariposa, Tulare, Tuolumne4 hr
Dec 28, 10:47 AM PSTMesoscale DiscussionSPCSan Luis Obispo, Santa Barbara, Ventura88 min
Dec 28, 11:23 PM PSTMesoscale DiscussionSPCOrange2 hr
Dec 29, 4:42 PM PSTMesoscale DiscussionSPCEl Dorado, Nevada, Placer, Plumas, Sierra, Siskiyou and 1 more5 hr
Dec 29, 10:17 PM PSTMesoscale DiscussionSPCNevada, Plumas, Sierra, Siskiyou, Trinity4 hr
Dec 30, 5:01 AM PSTMesoscale DiscussionSPCEl Dorado, Nevada, Placer, Plumas, Sierra, Siskiyou and 2 more4 hr
Dec 30, 11:03 AM PSTMesoscale DiscussionSPCEl Dorado, Nevada, Placer, Sierra, Tuolumne5 hr
Dec 30, 4:47 PM PSTMesoscale DiscussionSPCAlpine, El Dorado, Nevada, Placer, Plumas, Sierra and 1 more4 hr
Dec 30, 10:15 PM PSTMesoscale DiscussionSPCAlpine, El Dorado, Nevada, Plumas, Sierra, Tuolumne4 hr
Dec 31, 4:20 AM PSTMesoscale DiscussionSPCAlpine, El Dorado, Tulare, Tuolumne4 hr
Dec 31, 10:57 AM PSTMesoscale DiscussionSPCMono4 hr

By county

Every county with at least one alert. A county page lists each alert that covered it.

The busiest days

Days with the most alerts issued, by UTC date.

  1. December 30, 20044mesoscale discussions
  2. December 31, 20044mesoscale discussions
  3. December 28, 20043mesoscale discussions
  4. February 2, 20042mesoscale discussions
  5. November 21, 20042mesoscale discussions
  6. December 7, 20042mesoscale discussions
  7. January 1, 20041mesoscale discussions
  8. February 17, 20041mesoscale discussions
  9. February 18, 20041mesoscale discussions
  10. February 25, 20041mesoscale discussions
  11. August 13, 20041mesoscale discussions
  12. August 14, 20041mesoscale discussions

Nearby

Alerts in force nowTornadoes on recordThe radar archive20032005

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.