Alert archive / Oklahoma / Tillman County

Severe Thunderstorm Warnings in Tillman County, Oklahoma

1,358 severe thunderstorm warnings since 1986. An alert counts here when it covered this county. The archive of severe thunderstorm warnings reaches back to 1986.

Tillman County and its neighbors

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

Severe Thunderstorm Warnings: 1,358
Busiest year: 201689 severe thunderstorm warnings
Average year: 33over 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, 82% of hail, wind and damage reports in Tillman County fell inside a severe thunderstorm warning issued on average 25 minutes before, and 55% 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	33	14	58%	7	86%	25 min
2009	47	25	47%	13	85%	27 min
2010	18	13	28%	1	100%	40 min
2011	31	18	42%	15	80%	26 min
2012	40	16	60%	17	94%	25 min
2013	41	25	39%	23	87%	19 min
2014	19	10	47%	10	90%	36 min
2015	50	24	52%	18	83%	25 min
2016	89	47	47%	33	88%	26 min
2017	71	28	61%	16	81%	23 min
2018	45	23	49%	24	92%	18 min
2019	53	24	55%	17	88%	22 min
2020	70	31	56%	27	78%	29 min
2021	51	17	67%	13	62%	34 min
2022	46	15	67%	17	82%	25 min
2023	78	33	58%	27	89%	27 min
2024	82	32	61%	31	68%	22 min
2025	70	26	63%	23	65%	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 31, 6:21 PM CDT	Severe Thunderstorm Warning	OUN	39 min
Jul 31, 5:18 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	42 min
Jul 5, 3:46 PM CDT	Severe Thunderstorm Warning	OUN	29 min
Jul 5, 3:24 PM CDT	Severe Thunderstorm Warning	OUN	51 min
Jul 5, 2:22 PM CDT	Severe Thunderstorm Warning	OUN	38 min
Jun 26, 12:42 AM CDT	Severe Thunderstorm Warning	OUN	48 min
Jun 26, 12:07 AM CDT	Severe Thunderstorm Warning	OUN	38 min
Jun 22, 3:10 AM CDT	Severe Thunderstorm Warning	OUN	50 min
Jun 22, 2:36 AM CDT	Severe Thunderstorm Warning	OUN	54 min
Jun 22, 1:46 AM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	59 min
Jun 19, 4:40 AM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	50 min
Jun 19, 4:00 AM CDT	Severe Thunderstorm Warning	OUN	45 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.