Alert archive / California / Tehama County

Weather alerts in Tehama County, California, 2024

46 weather alerts in 2024, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Tehama County and its neighbors

Each county as a circle sized by its count in 2024. Tap one for its archive.

Alerts
46
Warnings
16
Watches
0
Advisories
8
Busiest month
February12 alerts
Busiest day
February 19, 20245 alerts

Over time

By month

Warning verification

How often warnings here had a storm report inside them, and how much warning the reports had.

Tehama County, 2024

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings40100%0
Flash flood warnings5180%333%96 min

Each office's whole area, 2024

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Sacramento, CA: tornado warnings10100%0
NWS Sacramento, CA: severe thunderstorm warnings100100%10%
NWS Sacramento, CA: flash flood warnings9189%195%96 min

An office's figures cover every county it serves, including across state lines.

Verified by the Iowa Environmental Mesonet's Cow, which matches each storm-based warning with the local storm reports inside its polygon while it was in force, within 15 km of its edge: a tornado warning counts as verified on a tornado report, a severe thunderstorm warning on hail of 1 inch or more, a gust of 58 mph or more, or wind damage, a flash flood warning on a flash flood report. The false alarm ratio is the share of warnings with no such report; "inside a warning" is the probability of detection, the share of reports that fell inside one; lead time runs from the warning's issue to each report inside it, counting zero for a report that came first. A warning with no report is not proof nothing happened: reports come from spotters, the public and damage surveys, and are thin where few people live.

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.

IssuedProductOfficeLasted
Feb 2, 1:26 PM PSTSpecial Weather StatementSTO34 min
Feb 4, 8:36 AM PSTRiver Flood WarningSTO21 days
Feb 4, 1:39 PM PSTRiver Flood WarningSTO37 hr
Feb 4, 7:36 PM PSTSpecial Weather StatementSTO54 min
Feb 18, 8:58 PM PSTRiver Flood WarningSTO42 hr
Feb 18, 10:36 PM PSTAreal Flood AdvisorySTO9 hr
Feb 19, 2:59 PM PSTSevere Thunderstorm WarningSTO46 min
Feb 19, 3:34 PM PSTSevere Thunderstorm WarningSTO56 min
Feb 19, 3:45 PM PSTSevere Thunderstorm WarningSTO34 min
Feb 19, 8:56 PM PSTRiver Flood WarningSTO21 hr
Feb 29, 11:57 AM PSTSpecial Weather StatementSTO63 min
Feb 29, 12:57 PM PSTSpecial Weather StatementSTO33 min
Mar 23, 3:50 PM PDTSpecial Weather StatementSTO25 min
Mar 23, 4:30 PM PDTSpecial Weather StatementSTO45 min
Mar 23, 5:09 PM PDTSpecial Weather StatementSTO51 min
Mar 23, 5:14 PM PDTSpecial Weather StatementSTO46 min
Mar 23, 5:53 PM PDTAreal Flood AdvisorySTO4 hr
Mar 27, 8:04 PM PDTSpecial Weather StatementSTO41 min
Apr 3, 4:26 PM PDTSpecial Weather StatementSTO34 min
Apr 12, 12:40 PM PDTSpecial Weather StatementSTO35 min
May 4, 8:36 AM PDTSpecial Weather StatementSTO54 min
Aug 17, 3:55 PM PDTSpecial Weather StatementSTO35 min
Aug 17, 4:07 PM PDTSevere Thunderstorm WarningSTO38 min
Sep 15, 5:51 PM PDTSpecial Weather StatementSTO24 min
Sep 15, 7:21 PM PDTSpecial Weather StatementSTO24 min
Sep 15, 8:34 PM PDTSpecial Weather StatementSTO56 min
Sep 15, 8:48 PM PDTFlash Flood Warning Considerable damage threatSTO5 hr
Sep 18, 6:37 PM PDTFlash Flood Warning Considerable damage threatSTO4 hr
Nov 11, 8:37 AM PSTSpecial Weather StatementSTO38 min
Nov 11, 9:14 AM PSTFlash Flood Warning Considerable damage threatSTO4 hr
Nov 11, 9:25 AM PSTSpecial Weather StatementSTO35 min
Nov 14, 5:03 PM PSTFlash Flood Warning Considerable damage threatSTO3 hr
Nov 21, 11:56 AM PSTAreal Flood AdvisorySTO36 hr
Nov 21, 2:04 PM PSTRiver Flood WarningSTO51 hr
Nov 22, 9:01 AM PSTAreal Flood AdvisorySTO27 hr
Nov 22, 9:30 AM PSTRiver Flood WarningSTO31 hr
Nov 23, 1:25 AM PSTAreal Flood AdvisorySTO9 hr
Nov 23, 3:37 PM PSTAreal Flood AdvisorySTO6 hr
Dec 14, 4:08 PM PSTRiver Flood WarningSTO15 hr
Dec 24, 2:51 AM PSTFlash Flood WarningSTO3 hr
Dec 24, 8:26 AM PSTAreal Flood AdvisorySTO6 hr
Dec 24, 10:21 AM PSTAreal Flood AdvisorySTO4 hr
Dec 29, 7:57 AM PSTSpecial Weather StatementSTO33 min
Dec 29, 1:06 PM PSTSpecial Weather StatementSTO24 min
Dec 29, 1:33 PM PSTSpecial Weather StatementSTO27 min
Dec 29, 2:02 PM PSTSpecial Weather StatementSTO28 min

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force nowTornadoes on recordForecastThe radar archive20232025

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.