Alert archive / Colorado

Weather alerts in Lincoln County, Colorado

4,556 weather alerts since 1986, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Lincoln County and its neighbors

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

Alerts
4,556
Warnings
2,041
Watches
762
Advisories
421
Busiest year
2026296 alerts
Average year
111over 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, 53% of tornado reports in Lincoln County fell inside a tornado warning issued on average 14 minutes before, and 79% of the tornado warnings had no report inside them.

Tornado warnings by year

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
200813285%367%19 min
200915380%1136%13 min
20109367%3100%18 min
201140100%0
20136183%250%0 min
201411464%771%14 min
201550100%70%
201610100%0
201730100%0
20186267%3100%11 min
20192150%1100%21 min
202010100%10%
202110460%888%14 min
202210100%0
202340100%30%
202420100%0
202520100%0
Share of tornado reports inside a tornado warning, by year.

Severe thunderstorm warnings by year

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
2008331167%1675%24 min
2009431858%2564%14 min
20107271%1118%15 min
201128968%1747%20 min
20127357%850%21 min
201320480%3100%7 min
2014381074%1856%27 min
201531777%1080%17 min
201639490%683%18 min
2017431272%1889%19 min
2018431174%1883%23 min
2019391074%10100%17 min
2020491667%1995%23 min
2021351363%2176%24 min
202234974%1486%20 min
2023811977%4183%18 min
2024713058%3385%18 min
2025853164%6284%22 min

Flash flood warnings by year

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
200830100%0
200920100%10%
201050100%0
201340100%20%
201430100%0
201520100%0
201710100%0
201810100%0
201920100%0
202310190%250%117 min
20245260%2100%39 min
202510100%0

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 21, 12:28 AM MDTSevere Thunderstorm WarningBOU19 min
Sep 21, 12:07 AM MDTSevere Thunderstorm WarningBOU23 min
Sep 20, 11:39 PM MDTSevere Thunderstorm WarningBOU51 min
Sep 20, 10:29 PM MDTSevere Thunderstorm WarningBOU46 min
Sep 20, 9:29 PM MDTSevere Thunderstorm WarningBOU31 min
Sep 20, 3:41 PM MDTSevere Thunderstorm Warning Considerable damage threatBOU34 min
Sep 20, 3:01 PM MDTSevere Thunderstorm WarningBOU44 min
Sep 20, 2:30 PM MDTSevere Thunderstorm WarningBOU45 min
Sep 19, 3:52 PM MDTSevere Thunderstorm Warning Considerable damage threatBOU38 min
Sep 19, 3:14 PM MDTSevere Thunderstorm WarningBOU46 min
Sep 19, 2:43 PM MDTSevere Thunderstorm WarningBOU47 min
Sep 10, 12:38 AM MDTSevere Thunderstorm WarningBOU21 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.