Alert archive / Arizona

Weather alerts in La Paz County, Arizona

2,675 weather alerts since 1986, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

La Paz County and its neighbors

Each county as a circle sized by its count since 1986. Tap one for its archive.

Alerts
2,675
Warnings
1,138
Watches
231
Advisories
695
Busiest year
2022356 alerts
Average year
65over 41 years on file

Over time

By year

Before late 2005 the archive holds only tornado, severe thunderstorm, flash flood and marine warnings, and from 1997 SPC's watches, so the jump that year is the archive widening, not the weather.

By month of the year

Warning verification

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

From 2008 to 2025, 0% of tornado reports in La Paz County fell inside a tornado warning, and 0% of the tornado warnings had no report inside them.

Tornado warnings by year

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
2010110%0
2018010%

Severe thunderstorm warnings by year

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
200824196%250%29 min
200912192%1100%9 min
201010460%450%19 min
201140100%20%
201213377%475%37 min
201340100%0
201413377%667%8 min
20158275%450%13 min
201630100%0
201714657%683%21 min
20188188%250%11 min
201919384%1050%19 min
20202150%1100%36 min
202114564%580%26 min
2022561180%4100%16 min
202310190%1100%17 min
20249367%540%28 min
2025230100%0

Flash flood warnings by year

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
20088275%540%112 min
20094250%3100%34 min
20109456%475%58 min
201110100%0
201223865%13100%71 min
20137271%560%48 min
201419289%2100%58 min
201530100%10%
20163167%250%76 min
201714657%6100%75 min
201818761%1191%61 min
2019321844%1995%71 min
202080100%0
202128775%757%135 min
2022722467%2580%83 min
202312650%989%134 min
202440100%0
202513746%5100%117 min

Years from 2008, the first full year of storm-based warnings. The year still running is on its own page.

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.

By product

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

The latest warnings

The most recent on file, newest first.

IssuedProductOfficeLasted
Sep 16, 5:47 PM MSTDust Storm WarningPSR58 min
Sep 16, 5:23 PM MSTSevere Thunderstorm WarningPSR52 min
Sep 16, 3:56 PM MSTSevere Thunderstorm WarningPSR34 min
Sep 7, 12:33 AM MSTExtreme Heat WarningPSR5 days
Sep 1, 7:07 PM MSTFlash Flood Warning Considerable damage threatPSR3 hr
Sep 1, 5:37 PM MSTSevere Thunderstorm WarningPSR38 min
Aug 31, 5:04 PM MSTSevere Thunderstorm Warning Considerable damage threatPSR41 min
Aug 31, 4:40 PM MSTSevere Thunderstorm WarningPSR50 min
Aug 31, 4:22 PM MSTFlash Flood Warning Considerable damage threatPSR4 hr
Aug 31, 4:13 PM MSTSevere Thunderstorm Warning Considerable damage threatPSR47 min
Aug 31, 3:54 PM MSTSevere Thunderstorm WarningPSR51 min
Aug 31, 3:24 PM MSTSevere Thunderstorm Warning Considerable damage threatPSR51 min

Nearby

Alerts in force nowTornadoes on recordForecastThe radar archive

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.