Alert archive / California / Mesoscale Discussions

Mesoscale Discussions in California, 2003

28 mesoscale discussions in 2003. 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 2003. Tap one for its archive.

Mesoscale Discussions
28
Busiest month
December6 mesoscale discussions
Busiest day
November 9, 20033 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
Mar 15, 1:11 PM PSTMesoscale DiscussionSPCTulare2 hr
Apr 1, 3:34 PM PSTMesoscale DiscussionSPCButte, Glenn, Shasta, Tehama116 min
Apr 13, 10:56 AM PDTMesoscale DiscussionSPCColusa, Merced, Sacramento, San Joaquin, Stanislaus, Sutter and 2 more94 min
Apr 21, 11:48 AM PDTMesoscale DiscussionSPCButte, Colusa, Glenn, Merced, Sacramento, San Joaquin and 5 more3 hr
Apr 25, 1:15 PM PDTMesoscale DiscussionSPCButte, Colusa, Glenn, Lake, Shasta, Sutter and 4 more3 hr
May 29, 1:41 PM PDTMesoscale DiscussionSPCAlpine, Butte, El Dorado, Lassen, Modoc, Nevada and 7 more3 hr
May 29, 4:55 PM PDTMesoscale DiscussionSPCLassen, Modoc, Plumas, Shasta, Siskiyou, Tehama and 1 more95 min
May 29, 9:07 PM PDTMesoscale DiscussionSPCLassen, Modoc, Shasta, Siskiyou, Tehama, Trinity53 min
May 30, 3:42 AM PDTMesoscale DiscussionSPCDel Norte, Siskiyou63 min
Jun 6, 3:27 PM PDTMesoscale DiscussionSPCSan Bernardino3 hr
Jul 29, 6:24 PM PDTMesoscale DiscussionSPCImperial2 hr
Jul 31, 4:13 PM PDTMesoscale DiscussionSPCAlpine, Amador, Calaveras, El Dorado, Fresno, Kern and 10 more2 hr
Aug 4, 4:12 PM PDTMesoscale DiscussionSPCLassen, Modoc, Shasta, Siskiyou, Tehama, Trinity2 hr
Aug 6, 10:50 AM PDTMesoscale DiscussionSPCSiskiyou2 hr
Aug 20, 5:04 PM PDTMesoscale DiscussionSPCImperial, Riverside2 hr
Aug 24, 12:46 PM PDTMesoscale DiscussionSPCSan Diego3 hr
Aug 26, 12:26 PM PDTMesoscale DiscussionSPCImperial, Riverside, San Bernardino2 hr
Nov 8, 10:50 AM PSTMesoscale DiscussionSPCDel Norte, Mendocino, Trinity2 hr
Nov 8, 2:03 PM PSTMesoscale DiscussionSPCAlameda, Colusa, Contra Costa, Glenn, Lake, Marin and 12 more2 hr
Nov 8, 4:30 PM PSTMesoscale DiscussionSPCAmador, El Dorado, Nevada, Placer, Plumas, Sierra4 hr
Nov 9, 10:54 AM PSTMesoscale DiscussionSPCAlameda, Butte, Colusa, Contra Costa, Lake, Napa and 8 more3 hr
Nov 9, 3:27 PM PSTMesoscale DiscussionSPCAlameda, Butte, Colusa, Contra Costa, Fresno, Glenn and 11 more2 hr
Dec 10, 12:01 AM PSTMesoscale DiscussionSPCAlpine, El Dorado, Placer, Tuolumne6 hr
Dec 14, 3:05 AM PSTMesoscale DiscussionSPCAmador, Calaveras, El Dorado, Mariposa, Nevada, Placer and 3 more5 hr
Dec 25, 3:59 AM PSTMesoscale DiscussionSPCAlpine, El Dorado, Tuolumne6 hr
Dec 28, 10:45 AM PSTMesoscale DiscussionSPCLassen, Nevada, Plumas, Sierra, Siskiyou, Trinity6 hr
Dec 28, 6:15 PM PSTMesoscale DiscussionSPCNevada, Plumas, Shasta, Sierra, Siskiyou, Tehama and 1 more6 hr
Dec 29, 9:38 AM PSTMesoscale DiscussionSPCAlpine, Amador, Calaveras, El Dorado, Mariposa, Nevada and 4 more6 hr

By county

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

8 more counties

The busiest days

Days with the most alerts issued, by UTC date.

  1. November 9, 20033mesoscale discussions
  2. May 29, 20032mesoscale discussions
  3. May 30, 20032mesoscale discussions
  4. November 8, 20032mesoscale discussions
  5. December 29, 20032mesoscale discussions
  6. March 15, 20031mesoscale discussions
  7. April 1, 20031mesoscale discussions
  8. April 13, 20031mesoscale discussions
  9. April 21, 20031mesoscale discussions
  10. April 25, 20031mesoscale discussions
  11. June 6, 20031mesoscale discussions
  12. July 30, 20031mesoscale discussions

Nearby

Alerts in force nowTornadoes on recordThe radar archive20022004

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.