Alert archive / Nebraska / Sherman County

Weather alerts in Sherman County, Nebraska, 2019

190 weather alerts in 2019, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Sherman County and its neighbors

Each county as a circle sized by its count in 2019. Tap one for its archive.

Alerts: 190
Warnings: 55
Watches: 26
Advisories: 44
Busiest month: August39 alerts
Busiest day: May 28, 201910 alerts

Over time

By month

Warning verification

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

1 of 2 tornado warnings covering Sherman County in 2019 had a tornado report inside them.

Sherman County, 2019

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	2	1	50%	0
Severe thunderstorm warnings	23	10	57%	1	100%	23 min
Flash flood warnings	7	5	29%	5	80%	77 min

Each office's whole area, 2019

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Hastings, NE: tornado warnings	19	8	58%	28	71%	28 min
NWS Hastings, NE: severe thunderstorm warnings	364	156	57%	459	83%	21 min
NWS Hastings, NE: flash flood warnings	47	12	74%	36	69%	138 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
Jan 7, 3:35 PM CST	Areal Flood Advisory	GID	17 hr
Jan 14, 5:29 PM CST	Dense Fog Advisory	GID	20 hr
Jan 17, 11:19 AM CST	Winter Weather Advisory	GID	33 hr
Jan 21, 3:34 AM CST	Winter Weather Advisory	GID	47 hr
Jan 22, 6:02 PM CST	Winter Weather Advisory	GID	4 hr
Jan 26, 3:13 PM CST	High Wind Watch	GID	12 hr
Jan 27, 3:18 AM CST	High Wind Warning	GID	33 hr
Jan 28, 4:35 AM CST	Wind Chill Advisory	GID	54 hr
Feb 1, 9:10 PM CST	Dense Fog Advisory	GID	14 hr
Feb 2, 9:06 PM CST	Dense Fog Advisory	GID	17 hr
Feb 6, 3:44 AM CST	Winter Weather Advisory	GID	30 hr
Feb 7, 3:30 AM CST	Wind Chill Advisory	GID	31 hr
Feb 10, 3:22 AM CST	Winter Weather Advisory	GID	43 hr
Feb 14, 2:30 AM CST	Winter Weather Advisory	GID	37 hr
Feb 18, 3:05 PM CST	Winter Weather Advisory	GID	41 hr
Feb 21, 3:46 PM CST	Winter Storm Watch	GID	22 hr
Feb 21, 3:46 PM CST	Winter Weather Advisory	GID	8 hr
Feb 21, 11:34 PM CST	Winter Weather Advisory	GID	45 hr
Mar 1, 3:40 PM CST	Winter Weather Advisory	GID	38 hr
Mar 2, 3:38 AM CST	Wind Chill Advisory	GID	56 hr
Mar 4, 8:59 PM CST	Wind Chill Advisory	GID	11 hr
Mar 6, 3:15 AM CST	Winter Weather Advisory	GID	27 hr
Mar 7, 12:09 AM CST	Mesoscale Discussion	SPC	3 hr
Mar 8, 4:12 AM CST	Winter Weather Advisory	GID	30 hr
Mar 8, 4:44 AM CST	Dense Fog Advisory	GID	9 hr
Mar 8, 4:57 PM CST	Dense Fog Advisory	GID	17 hr
Mar 11, 4:35 AM CDT	Flood Watch	GID	58 hr
Mar 11, 1:18 PM CDT	High Wind Watch	GID	23 hr
Mar 12, 9:56 AM CDT	Dense Fog Advisory	GID	24 hr
Mar 12, 11:54 AM CDT	Winter Storm Watch	GID	17 hr
Mar 12, 12:03 PM CDT	High Wind Warning	GID	58 hr
Mar 13, 4:33 AM CDT	Winter Storm Warning	GID	17 hr
Mar 13, 7:25 AM CDT	River Flood Warning	GID	5 days
Mar 13, 8:26 AM CDT	Areal Flood Warning	GID	75 min
Mar 13, 9:38 AM CDT	Areal Flood Warning	GID	53 min
Mar 13, 10:25 AM CDT	Areal Flood Warning	GID	54 hr
Mar 13, 6:06 PM CDT	Flash Flood Warning	GID	62 min
Mar 13, 7:07 PM CDT	Flash Flood Warning	GID	5 hr
Mar 13, 9:54 PM CDT	Blizzard Warning	GID	14 hr
Mar 13, 11:48 PM CDT	Flash Flood Warning	GID	8 hr
Mar 15, 4:19 PM CDT	Areal Flood Warning	GID	24 hr
Mar 26, 2:20 AM CDT	Dense Fog Advisory	GID	10 hr
Apr 5, 3:35 AM CDT	Dense Fog Advisory	GID	6 hr
Apr 8, 4:04 PM CDT	Winter Storm Watch	GID	24 hr
Apr 9, 3:54 PM CDT	Blizzard Warning	GID	41 hr
Apr 9, 3:54 PM CDT	Winter Weather Advisory	GID	51 hr
Apr 10, 10:18 PM CDT	Special Weather Statement	GID	27 min
Apr 10, 10:19 PM CDT	Mesoscale Discussion	SPC	4 hr
Apr 10, 10:50 PM CDT	Special Weather Statement	GID	40 min
Apr 21, 7:04 PM CDT	Severe Thunderstorm Warning	GID	41 min
May 1, 3:21 PM CDT	Freeze Warning	GID	19 hr
May 4, 1:58 PM CDT	Mesoscale Discussion	SPC	2 hr
May 8, 2:47 PM CDT	Freeze Watch	GID	13 hr
May 9, 3:17 AM CDT	Freeze Warning	GID	30 hr
May 16, 8:06 PM CDT	Mesoscale Discussion	SPC	114 min
May 17, 2:59 PM CDT	Tornado Watch	SPC	9 hr
May 17, 4:46 PM CDT	Severe Thunderstorm Warning	GID	44 min
May 17, 5:45 PM CDT	Mesoscale Discussion	SPC	2 hr
May 17, 8:12 PM CDT	Mesoscale Discussion	SPC	2 hr
May 17, 9:36 PM CDT	Severe Thunderstorm Warning	GID	54 min
May 17, 11:14 PM CDT	Mesoscale Discussion	SPC	2 hr
May 17, 11:41 PM CDT	Severe Thunderstorm Warning	GID	52 min
May 23, 8:44 PM CDT	Special Weather Statement	LBF	16 min
May 26, 5:27 PM CDT	Mesoscale Discussion	SPC	63 min
May 27, 4:39 PM CDT	Mesoscale Discussion	SPC	2 hr
May 27, 8:02 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
May 27, 8:47 PM CDT	Mesoscale Discussion	SPC	118 min
May 27, 9:10 PM CDT	Flash Flood Watch	GID	9 hr
May 27, 10:02 PM CDT	Severe Thunderstorm Warning	GID	43 min
May 27, 11:42 PM CDT	Mesoscale Discussion	SPC	63 min
May 28, 12:18 AM CDT	Tornado Warning	GID	27 min
May 28, 12:30 AM CDT	Severe Thunderstorm Warning	GID	45 min
May 28, 12:44 AM CDT	Tornado Warning	GID	31 min
May 28, 1:14 AM CDT	Severe Thunderstorm Warning	GID	46 min
May 28, 1:55 AM CDT	Areal Flood Advisory	GID	14 hr
Jun 3, 1:49 AM CDT	Special Weather Statement	GID	41 min
Jun 5, 12:43 AM CDT	Special Weather Statement	GID	32 min
Jun 8, 2:18 PM CDT	Mesoscale Discussion	SPC	87 min
Jun 8, 2:51 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 8, 5:51 PM CDT	Mesoscale Discussion	SPC	54 min
Jun 8, 8:43 PM CDT	Mesoscale Discussion	SPC	92 min
Jun 8, 8:48 PM CDT	Special Weather Statement	GID	42 min
Jun 17, 2:36 PM CDT	Flood Watch	GID	30 hr
Jun 17, 5:49 PM CDT	Special Weather Statement	GID	41 min
Jun 20, 4:45 AM CDT	Special Weather Statement	GID	15 min
Jun 20, 8:14 PM CDT	Mesoscale Discussion	SPC	91 min
Jun 20, 9:44 PM CDT	Severe Thunderstorm Watch	SPC	9 hr
Jun 21, 12:42 AM CDT	Mesoscale Discussion	SPC	93 min
Jun 21, 12:44 AM CDT	Special Weather Statement	GID	46 min
Jun 21, 4:34 AM CDT	Mesoscale Discussion	SPC	86 min
Jun 25, 1:13 AM CDT	Special Weather Statement	GID	47 min
Jun 25, 1:49 AM CDT	Severe Thunderstorm Warning	GID	41 min
Jun 26, 1:55 AM CDT	Mesoscale Discussion	SPC	2 hr
Jun 26, 2:26 AM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 26, 3:27 AM CDT	Severe Thunderstorm Warning	GID	48 min
Jun 28, 2:44 PM CDT	Heat Advisory	GID	30 hr
Jun 29, 2:25 AM CDT	Heat Advisory	GID	41 hr
Jul 1, 6:20 PM CDT	Special Weather Statement	LBF	40 min
Jul 1, 6:42 PM CDT	Mesoscale Discussion	SPC	3 hr
Jul 2, 3:42 PM CDT	Mesoscale Discussion	SPC	93 min
Jul 4, 10:08 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 5, 1:43 AM CDT	Mesoscale Discussion	SPC	2 hr
Jul 5, 3:09 AM CDT	Severe Thunderstorm Warning	GID	51 min
Jul 5, 4:54 AM CDT	Mesoscale Discussion	SPC	2 hr
Jul 8, 2:26 PM CDT	Mesoscale Discussion	SPC	3 hr
Jul 8, 4:12 PM CDT	Special Weather Statement	LBF	48 min
Jul 8, 8:58 PM CDT	Flash Flood Warning	GID	8 hr
Jul 9, 5:02 AM CDT	Areal Flood Warning	GID	10 hr
Jul 9, 11:45 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 10, 2:17 AM CDT	Special Weather Statement	LBF	28 min
Jul 13, 12:34 AM CDT	Special Weather Statement	GID	41 min
Jul 13, 1:10 AM CDT	Special Weather Statement	GID	50 min
Jul 15, 3:35 PM CDT	Excessive Heat Watch	GID	23 hr
Jul 16, 2:57 PM CDT	Excessive Heat Warning	GID	4 days
Jul 20, 11:01 PM CDT	Mesoscale Discussion	SPC	119 min
Jul 21, 3:45 AM CDT	Areal Flood Advisory	GID	5 hr
Jul 21, 8:50 AM CDT	Areal Flood Advisory	GID	3 hr
Aug 6, 6:19 PM CDT	Mesoscale Discussion	SPC	116 min
Aug 6, 8:19 PM CDT	Severe Thunderstorm Watch	SPC	9 hr
Aug 6, 10:24 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 7, 1:41 AM CDT	Severe Thunderstorm Warning	GID	49 min
Aug 7, 2:15 AM CDT	Severe Thunderstorm Warning	GID	45 min
Aug 7, 2:22 AM CDT	Mesoscale Discussion	SPC	83 min
Aug 7, 3:36 AM CDT	Special Weather Statement	GID	24 min
Aug 7, 3:51 AM CDT	Areal Flood Advisory	GID	8 hr
Aug 10, 1:09 AM CDT	Mesoscale Discussion	SPC	2 hr
Aug 10, 1:22 AM CDT	Special Weather Statement	GID	38 min
Aug 10, 6:32 PM CDT	Mesoscale Discussion	SPC	118 min
Aug 11, 5:15 AM CDT	Flash Flood Watch	GID	22 hr
Aug 11, 9:11 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 11, 9:40 PM CDT	Severe Thunderstorm Watch PDS	SPC	7 hr
Aug 12, 12:43 AM CDT	Severe Thunderstorm Warning	GID	47 min
Aug 12, 1:27 AM CDT	Special Weather Statement	GID	48 min
Aug 15, 8:45 AM CDT	Special Weather Statement	GID	30 min
Aug 16, 8:43 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 21, 1:20 AM CDT	Severe Thunderstorm Warning	GID	40 min
Aug 21, 1:22 AM CDT	Flash Flood Warning	GID	7 hr
Aug 21, 1:22 AM CDT	Mesoscale Discussion	SPC	113 min
Aug 21, 1:28 AM CDT	Severe Thunderstorm Warning	GID	47 min
Aug 21, 1:59 AM CDT	Severe Thunderstorm Warning	GID	46 min
Aug 21, 2:51 AM CDT	Flash Flood Warning	GID	6 hr
Aug 21, 3:15 AM CDT	Mesoscale Discussion	SPC	90 min
Aug 21, 8:14 AM CDT	Areal Flood Warning	GID	12 hr
Aug 22, 8:49 PM CDT	Areal Flood Warning	GID	12 hr
Aug 22, 9:14 PM CDT	Flash Flood Warning	GID	6 hr
Aug 22, 10:44 PM CDT	Special Weather Statement	GID	46 min
Aug 23, 8:45 AM CDT	Areal Flood Warning	GID	54 min
Aug 23, 9:37 AM CDT	Areal Flood Warning	GID	12 hr
Aug 23, 11:18 AM CDT	Flash Flood Watch	GID	41 hr
Aug 26, 3:35 AM CDT	Mesoscale Discussion	SPC	85 min
Aug 26, 4:44 AM CDT	Severe Thunderstorm Warning	GID	46 min
Aug 26, 5:16 AM CDT	Special Weather Statement	LBF	29 min
Aug 26, 5:20 AM CDT	Severe Thunderstorm Warning	GID	40 min
Aug 26, 5:44 AM CDT	Mesoscale Discussion	SPC	91 min
Aug 26, 5:52 AM CDT	Severe Thunderstorm Warning	GID	38 min
Aug 26, 8:46 AM CDT	Areal Flood Advisory	GID	60 hr
Sep 1, 5:12 AM CDT	Dense Fog Advisory	GID	6 hr
Sep 8, 2:53 AM CDT	Dense Fog Advisory	GID	7 hr
Sep 11, 3:31 PM CDT	Severe Thunderstorm Watch	SPC	10 hr
Sep 11, 8:14 PM CDT	Mesoscale Discussion	SPC	2 hr
Sep 11, 11:36 PM CDT	Mesoscale Discussion	SPC	84 min
Sep 11, 11:59 PM CDT	Special Weather Statement	GID	46 min
Sep 12, 12:39 AM CDT	Special Weather Statement	GID	51 min
Sep 19, 5:38 PM CDT	Mesoscale Discussion	SPC	67 min
Sep 28, 9:27 PM CDT	Dense Fog Advisory	GID	11 hr
Sep 30, 3:10 AM CDT	Flash Flood Watch	GID	42 hr
Sep 30, 4:59 PM CDT	Mesoscale Discussion	SPC	2 hr
Sep 30, 6:05 PM CDT	Severe Thunderstorm Warning	GID	40 min
Sep 30, 6:41 PM CDT	Severe Thunderstorm Warning	GID	34 min
Sep 30, 7:07 PM CDT	Severe Thunderstorm Warning	GID	38 min
Sep 30, 7:41 PM CDT	Severe Thunderstorm Warning	GID	49 min
Oct 2, 3:02 AM CDT	Frost Advisory	GID	30 hr
Oct 6, 3:18 AM CDT	Frost Advisory	GID	30 hr
Oct 9, 2:25 AM CDT	Freeze Watch	GID	13 hr
Oct 9, 3:35 PM CDT	Freeze Warning	GID	44 hr
Oct 21, 8:49 AM CDT	High Wind Warning	GID	10 hr
Nov 10, 1:55 PM CST	Winter Weather Advisory	GID	17 hr
Nov 24, 2:00 PM CST	Winter Storm Watch	GID	13 hr
Nov 25, 3:26 AM CST	Winter Storm Warning	GID	48 hr
Nov 26, 10:58 AM CST	Mesoscale Discussion	SPC	6 hr
Nov 26, 5:23 PM CST	Mesoscale Discussion	SPC	6 hr
Nov 27, 2:52 PM CST	Winter Weather Advisory	GID	52 hr
Nov 28, 2:57 PM CST	High Wind Watch	GID	21 hr
Nov 29, 11:52 AM CST	High Wind Warning	GID	45 hr
Nov 29, 1:54 PM CST	Dense Fog Advisory	GID	16 hr
Dec 14, 3:34 AM CST	Winter Weather Advisory	GID	33 hr
Dec 25, 7:40 AM CST	Dense Fog Advisory	GID	4 hr
Dec 26, 2:45 AM CST	Winter Storm Watch	GID	25 hr
Dec 27, 3:37 AM CST	Winter Weather Advisory	GID	62 hr
Dec 28, 5:26 AM CST	Winter Storm Warning	GID	37 hr

By product

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

Product	Alerts
Severe storms
Severe Thunderstorm Warning	23
Tornado Warning	2
Severe Thunderstorm Watch	8
Tornado Watch	1
Mesoscale Discussion	42
Special Weather Statement	23
Flooding
Areal Flood Warning	9
Flash Flood Warning	7
River Flood Warning	1
Flash Flood Watch	4
Flood Watch	2
Areal Flood Advisory	6
Winter
Blizzard Warning	2
Winter Storm Warning	3
Winter Storm Watch	5
Winter Weather Advisory	17
Heat
Excessive Heat Warning	1
Excessive Heat Watch	1
Heat Advisory	2
Cold
Freeze Warning	3
Freeze Watch	2
Frost Advisory	2
Wind Chill Advisory	4
Wind and dust
High Wind Warning	4
High Wind Watch	3
Fog and smoke
Dense Fog Advisory	13

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2018 2020

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.