Alert archive / California / Mendocino County

Weather alerts in Mendocino County, California, 2016

54 weather alerts in 2016, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Mendocino County and its neighbors

Each county as a circle sized by its count in 2016. Tap one for its archive.

Alerts
54
Warnings
9
Watches
7
Advisories
32
Busiest month
March15 alerts
Busiest day
January 17, 20164 alerts

Over time

By month

Warning verification

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

Mendocino County, 2016

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings00
Flash flood warnings030%

Each office's whole area, 2016

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Medford, OR: severe thunderstorm warnings19289%450%23 min
NWS Medford, OR: flash flood warnings10100%0
NWS Los Angeles, CA: tornado warnings010%
NWS Los Angeles, CA: severe thunderstorm warnings7443%5235%34 min
NWS Los Angeles, CA: flash flood warnings24771%2938%62 min
NWS Eureka, CA: severe thunderstorm warnings50100%0
NWS Eureka, CA: flash flood warnings0200%
NWS San Diego, CA: tornado warnings20100%20%
NWS San Diego, CA: severe thunderstorm warnings14657%2654%34 min
NWS San Diego, CA: flash flood warnings141029%4367%66 min
NWS Las Vegas, NV: tornado warnings010%
NWS Las Vegas, NV: severe thunderstorm warnings921782%6970%23 min
NWS Las Vegas, NV: flash flood warnings1234663%12566%84 min
NWS Hanford, CA: severe thunderstorm warnings14286%1414%25 min
NWS Hanford, CA: flash flood warnings11191%1118%75 min
NWS Sacramento, CA: tornado warnings40100%40%
NWS Sacramento, CA: severe thunderstorm warnings13469%1155%17 min
NWS Sacramento, CA: flash flood warnings4175%1100%61 min
NWS Reno, NV: severe thunderstorm warnings20100%20%
NWS Reno, NV: flash flood warnings50100%50%
NWS San Francisco Bay Area, CA: tornado warnings020%
NWS San Francisco Bay Area, CA: severe thunderstorm warnings20100%10%
NWS San Francisco Bay Area, CA: flash flood warnings23387%9317%121 min
NWS Phoenix, AZ: tornado warnings10100%0
NWS Phoenix, AZ: severe thunderstorm warnings501276%3751%20 min
NWS Phoenix, AZ: flash flood warnings7529%1242%34 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
Jan 16, 1:50 PM PSTRiver Flood WatchEKA20 hr
Jan 17, 7:25 AM PSTAreal Flood AdvisoryEKA14 hr
Jan 17, 9:30 AM PSTRiver Flood WarningEKA28 hr
Jan 17, 9:30 AM PSTRiver Flood WarningEKA29 hr
Jan 17, 11:41 AM PSTAreal Flood AdvisoryEKA13 hr
Jan 18, 5:30 AM PSTRiver Flood AdvisoryEKA4 hr
Mar 4, 2:22 PM PSTRiver Flood WatchEKA24 hr
Mar 5, 1:59 PM PSTRiver Flood WarningEKA21 hr
Mar 5, 2:16 PM PSTRiver Flood AdvisoryEKA22 hr
Mar 5, 3:32 PM PSTAreal Flood AdvisoryEKA8 hr
Mar 5, 6:53 PM PSTAreal Flood AdvisoryEKA5 hr
Mar 9, 4:13 PM PSTRiver Flood WatchEKA18 hr
Mar 10, 5:11 AM PSTAreal Flood AdvisoryEKA5 hr
Mar 10, 9:41 AM PSTRiver Flood WarningEKA49 hr
Mar 10, 3:55 PM PSTRiver Flood AdvisoryEKA43 hr
Mar 11, 3:26 PM PSTRiver Flood WatchEKA41 hr
Mar 12, 8:32 AM PSTSpecial Weather StatementEKA13 min
Mar 13, 7:39 AM PDTAreal Flood AdvisoryEKA7 hr
Mar 13, 8:58 AM PDTRiver Flood WarningEKA25 hr
Mar 13, 10:04 AM PDTRiver Flood AdvisoryEKA25 hr
Mar 13, 10:29 PM PDTRiver Flood AdvisoryEKA10 hr
May 24, 1:58 PM PDTSpecial Weather StatementEKA47 min
May 24, 2:31 PM PDTSpecial Weather StatementEKA44 min
Sep 13, 3:50 AM PDTFrost AdvisoryEKA28 hr
Sep 21, 2:20 PM PDTFrost AdvisoryEKA16 hr
Oct 12, 2:06 PM PDTHigh Surf AdvisoryEKA46 hr
Oct 13, 2:30 PM PDTCoastal Flood AdvisoryEKA22 hr
Oct 14, 3:31 PM PDTWind AdvisoryEKA28 hr
Oct 16, 2:48 AM PDTCoastal Flood AdvisoryEKA11 hr
Nov 2, 10:45 AM PDTBeach Hazards StatementEKA24 hr
Nov 3, 11:16 AM PDTBeach Hazards StatementEKA8 hr
Nov 4, 8:57 PM PDTHigh Surf AdvisoryEKA35 hr
Nov 15, 3:22 PM PSTFreeze WatchEKA23 hr
Nov 16, 2:36 PM PSTFreeze WarningEKA18 hr
Nov 16, 9:50 PM PSTFrost AdvisoryEKA11 hr
Nov 17, 3:23 PM PSTWind AdvisoryEKA36 hr
Nov 23, 9:36 PM PSTFrost AdvisoryEKA11 hr
Nov 25, 3:07 PM PSTWinter Weather AdvisoryEKA41 hr
Nov 28, 5:22 AM PSTHigh Surf AdvisoryEKA36 hr
Nov 30, 2:45 PM PSTFrost AdvisoryEKA18 hr
Dec 1, 2:10 PM PSTFrost AdvisoryEKA19 hr
Dec 3, 3:12 AM PSTHigh Surf AdvisoryEKA19 hr
Dec 6, 4:26 AM PSTFrost AdvisoryEKA30 hr
Dec 10, 8:55 AM PSTAreal Flood AdvisoryEKA8 hr
Dec 12, 5:35 PM PSTFlood WatchEKA70 hr
Dec 13, 3:16 PM PSTRiver Flood WatchEKA24 hr
Dec 14, 2:50 PM PSTRiver Flood AdvisoryEKA39 hr
Dec 14, 3:15 PM PSTRiver Flood WarningEKA44 hr
Dec 15, 5:32 AM PSTAreal Flood AdvisoryEKA11 hr
Dec 15, 10:30 AM PSTRiver Flood WarningEKA22 hr
Dec 15, 3:56 PM PSTRiver Flood AdvisoryEKA15 hr
Dec 16, 1:58 AM PSTFrost AdvisoryEKA31 hr
Dec 17, 3:10 PM PSTHard Freeze WarningEKA18 hr
Dec 18, 5:18 AM PSTBeach Hazards StatementEKA43 hr

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 archive20152017

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.