Alert archive / California / Excessive Heat Warnings

Excessive Heat Warnings in California, 2009

16 excessive heat warnings in 2009. 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 excessive heat warnings reaches back to 2005.

Excessive Heat Warnings by county

Each county as a circle sized by its count in 2009. Tap one for its archive.

Excessive Heat Warnings
16
Busiest month
July8 excessive heat warnings
Busiest day
July 16, 20092 excessive heat warnings

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
Jun 25, 2:27 PM PDTExcessive Heat WarningMTRSanta Clara3 days
Jul 11, 5:36 AM PDTExcessive Heat WarningPSR4 days
Jul 16, 2:02 PM PDTExcessive Heat WarningVEFInyo, San Bernardino62 hr
Jul 16, 2:50 PM PDTExcessive Heat WarningPSR4 days
Jul 17, 10:07 AM PDTExcessive Heat WarningLOX5 days
Jul 19, 3:45 PM PDTExcessive Heat WarningHNX24 hr
Jul 26, 3:53 AM PDTExcessive Heat WarningPSR3 days
Jul 28, 9:26 AM PDTExcessive Heat WarningVEFInyo, San Bernardino11 hr
Jul 31, 1:31 PM PDTExcessive Heat WarningPSR6 days
Aug 20, 2:43 PM PDTExcessive Heat WarningVEFInyo, San Bernardino28 hr
Aug 26, 1:47 PM PDTExcessive Heat WarningPSR30 hr
Aug 26, 1:47 PM PDTExcessive Heat WarningPSR4 days
Aug 27, 3:35 AM PDTExcessive Heat WarningVEFInyo, San Bernardino39 hr
Aug 27, 2:51 PM PDTExcessive Heat WarningPSR53 hr
Aug 28, 4:22 AM PDTExcessive Heat WarningVEFInyo, San Bernardino39 hr
Aug 29, 3:34 AM PDTExcessive Heat WarningPSR40 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. July 16, 20092excessive heat warnings
  2. August 26, 20092excessive heat warnings
  3. August 27, 20092excessive heat warnings
  4. June 25, 20091excessive heat warnings
  5. July 11, 20091excessive heat warnings
  6. July 17, 20091excessive heat warnings
  7. July 19, 20091excessive heat warnings
  8. July 26, 20091excessive heat warnings
  9. July 28, 20091excessive heat warnings
  10. July 31, 20091excessive heat warnings
  11. August 20, 20091excessive heat warnings
  12. August 28, 20091excessive heat warnings

Nearby

Alerts in force nowTornadoes on recordThe radar archive20082010

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.