Alert archive / California / Flash Flood Warnings / 2021

Flash Flood Warnings in California, October 2021

14 flash flood warnings in October 2021. 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 flash flood warnings reaches back to 1986.

Flash Flood Warnings by county

Each county as a circle sized by its count in October 2021. Tap one for its archive.

Flash Flood Warnings: 14
Busiest day: October 25, 20217 flash flood warnings

Over time

By day

Days in UTC, the clock the archive keeps.

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
Oct 22, 4:25 AM PDT	Flash Flood Warning	MFR	Siskiyou	2 hr
Oct 24, 5:19 AM PDT	Flash Flood Warning Considerable damage threat	STO	Lassen, Plumas	22 hr
Oct 24, 6:11 AM PDT	Flash Flood Warning	REV	Lassen, Plumas	21 hr
Oct 24, 6:42 AM PDT	Flash Flood Warning	REV	Lassen, Plumas	20 hr
Oct 24, 7:47 AM PDT	Flash Flood Warning Considerable damage threat	STO	El Dorado	25 hr
Oct 24, 12:27 PM PDT	Flash Flood Warning Considerable damage threat	MTR	Napa, Sonoma	5 hr
Oct 24, 12:28 PM PDT	Flash Flood Warning	MTR	Napa	62 min
Oct 24, 5:45 PM PDT	Flash Flood Warning Considerable damage threat	STO	Nevada, Placer	9 hr
Oct 24, 11:10 PM PDT	Flash Flood Warning Considerable damage threat	REV	Alpine, El Dorado, Mono	6 hr
Oct 25, 1:07 AM PDT	Flash Flood Warning Considerable damage threat	MTR	Monterey	4 hr
Oct 25, 3:23 AM PDT	Flash Flood Warning	HNX	Fresno	4 hr
Oct 25, 4:02 AM PDT	Flash Flood Warning Considerable damage threat	HNX	Fresno, Madera	12 hr
Oct 25, 8:22 AM PDT	Flash Flood Warning	LOX	Santa Barbara	3 hr
Oct 25, 4:20 PM PDT	Flash Flood Warning Considerable damage threat	SGX	San Bernardino	3 hr

By county

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

Nearby

Alerts in force now Tornadoes on record The radar archive 2020 2022

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.