Severe Thunderstorm Warnings in Osage County, Oklahoma

1,924 severe thunderstorm warnings since 1986. An alert counts here when it covered this county. The archive of severe thunderstorm warnings reaches back to 1986.

Osage County and its neighbors

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

Severe Thunderstorm Warnings: 1,924
Busiest year: 202596 severe thunderstorm warnings
Average year: 47over 41 years on file

Over time

By year

Before October 2007 these were issued for whole counties, and a storm crossing three counties was often three warnings; since then one polygon follows the storm. The count changed with the practice, not only with the weather.

Warning verification

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

From 2008 to 2025, 80% of hail, wind and damage reports in Osage County fell inside a severe thunderstorm warning issued on average 27 minutes before, and 58% of the severe thunderstorm warnings had no report inside them.

Severe thunderstorm warnings by year

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
2008	83	41	51%	37	81%	29 min
2009	80	34	57%	34	68%	34 min
2010	43	18	58%	14	57%	27 min
2011	72	41	43%	42	76%	28 min
2012	43	22	49%	34	68%	27 min
2013	59	30	49%	24	88%	24 min
2014	30	12	60%	4	50%	39 min
2015	36	20	44%	8	100%	26 min
2016	49	25	49%	18	94%	25 min
2017	82	35	57%	24	71%	25 min
2018	66	28	58%	13	85%	31 min
2019	74	27	64%	20	90%	22 min
2020	68	26	62%	15	87%	25 min
2021	38	13	66%	12	92%	25 min
2022	40	9	78%	2	100%	12 min
2023	57	18	68%	10	70%	18 min
2024	89	29	67%	23	78%	33 min
2025	96	36	63%	32	97%	26 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.

The latest severe thunderstorm warnings

The most recent on file, newest first.

Issued	Product	Office	Lasted
Jul 4, 7:42 PM CDT	Severe Thunderstorm Warning Destructive damage threat	TSA	33 min
Jul 4, 7:15 PM CDT	Severe Thunderstorm Warning	TSA	45 min
Jul 4, 7:13 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TSA	47 min
Jul 4, 6:54 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TSA	51 min
Jul 4, 6:37 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TSA	53 min
Jul 4, 6:14 PM CDT	Severe Thunderstorm Warning Destructive damage threat	TSA	31 min
Jul 4, 5:59 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TSA	46 min
Jun 25, 3:19 PM CDT	Severe Thunderstorm Warning	TSA	56 min
Jun 25, 1:57 PM CDT	Severe Thunderstorm Warning	TSA	63 min
Jun 22, 3:56 AM CDT	Severe Thunderstorm Warning	TSA	49 min
Jun 22, 3:05 AM CDT	Severe Thunderstorm Warning	TSA	55 min
Jun 22, 2:30 AM CDT	Severe Thunderstorm Warning	TSA	60 min

Nearby

Alerts in force now Tornadoes on record Forecast The 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.