Alert archive / Nebraska / Custer County / Severe Thunderstorm Warnings

Severe Thunderstorm Warnings in Custer County, Nebraska, 2023

45 severe thunderstorm warnings in 2023. An alert counts here when it covered this county. The archive of severe thunderstorm warnings reaches back to 1986.

Custer County and its neighbors

Each county as a circle sized by its count in 2023. Tap one for its archive.

Severe Thunderstorm Warnings: 45
Busiest month: July20 severe thunderstorm warnings
Busiest day: September 9, 20236 severe thunderstorm warnings

Over time

By month

Warning verification

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

26 of 45 severe thunderstorm warnings covering Custer County in 2023 had a qualifying storm report inside them; 22 of 25 hail, wind and damage reports fell inside a warning, on average 25 minutes after it went out.

Custer County, 2023

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Severe thunderstorm warnings	45	26	42%	25	88%	25 min

Each office's whole area, 2023

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS North Platte, NE: severe thunderstorm warnings	360	193	46%	336	88%	21 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, Central Time. Each opens its own page with the text, the map, the radar and the sounding.

Issued	Product	Office	Lasted
Mar 30, 7:12 PM CDT	Severe Thunderstorm Warning	LBF	37 min
Apr 13, 6:39 PM CDT	Severe Thunderstorm Warning	LBF	36 min
May 5, 11:23 PM CDT	Severe Thunderstorm Warning	LBF	37 min
May 7, 3:21 AM CDT	Severe Thunderstorm Warning	LBF	24 min
May 7, 3:58 AM CDT	Severe Thunderstorm Warning	LBF	32 min
May 7, 4:11 AM CDT	Severe Thunderstorm Warning	LBF	21 min
May 7, 2:37 PM CDT	Severe Thunderstorm Warning	LBF	38 min
May 7, 3:17 PM CDT	Severe Thunderstorm Warning	LBF	43 min
May 10, 6:43 AM CDT	Severe Thunderstorm Warning	LBF	34 min
May 28, 6:29 PM CDT	Severe Thunderstorm Warning	LBF	33 min
May 29, 8:10 PM CDT	Severe Thunderstorm Warning	LBF	50 min
May 30, 10:56 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LBF	64 min
May 30, 10:59 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LBF	61 min
May 31, 12:30 AM CDT	Severe Thunderstorm Warning	LBF	45 min
Jun 24, 1:21 AM CDT	Severe Thunderstorm Warning	LBF	39 min
Jul 10, 4:55 PM CDT	Severe Thunderstorm Warning	LBF	50 min
Jul 10, 6:33 PM CDT	Severe Thunderstorm Warning	LBF	42 min
Jul 10, 6:41 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LBF	34 min
Jul 10, 6:55 PM CDT	Severe Thunderstorm Warning	LBF	35 min
Jul 11, 9:25 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LBF	50 min
Jul 11, 9:51 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LBF	39 min
Jul 11, 10:24 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LBF	51 min
Jul 11, 10:56 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LBF	37 min
Jul 14, 9:11 AM CDT	Severe Thunderstorm Warning	LBF	49 min
Jul 16, 5:30 AM CDT	Severe Thunderstorm Warning	LBF	45 min
Jul 22, 5:25 PM CDT	Severe Thunderstorm Warning	LBF	24 min
Jul 22, 7:08 PM CDT	Severe Thunderstorm Warning	LBF	52 min
Jul 22, 7:53 PM CDT	Severe Thunderstorm Warning	LBF	40 min
Jul 25, 10:03 PM CDT	Severe Thunderstorm Warning	LBF	12 min
Jul 26, 6:21 PM CDT	Severe Thunderstorm Warning	LBF	39 min
Jul 26, 6:57 PM CDT	Severe Thunderstorm Warning	LBF	31 min
Jul 29, 3:31 AM CDT	Severe Thunderstorm Warning	LBF	44 min
Jul 29, 3:46 AM CDT	Severe Thunderstorm Warning	LBF	44 min
Jul 29, 4:06 AM CDT	Severe Thunderstorm Warning Considerable damage threat	LBF	39 min
Jul 29, 4:43 AM CDT	Severe Thunderstorm Warning Considerable damage threat	LBF	47 min
Sep 4, 9:06 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LBF	39 min
Sep 9, 2:22 PM CDT	Severe Thunderstorm Warning	LBF	53 min
Sep 9, 2:49 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LBF	26 min
Sep 9, 3:11 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LBF	49 min
Sep 9, 3:36 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LBF	39 min
Sep 9, 3:47 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LBF	43 min
Sep 9, 4:29 PM CDT	Severe Thunderstorm Warning	LBF	15 min
Sep 21, 4:10 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LBF	50 min
Sep 21, 5:00 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LBF	19 min
Oct 3, 3:13 PM CDT	Severe Thunderstorm Warning	LBF	47 min

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2022 2024

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.