Alert archive / Nebraska / Keya Paha County

Weather alerts in Keya Paha County, Nebraska, 2009

141 weather alerts in 2009, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Keya Paha County and its neighbors

Each county as a circle sized by its count in 2009. Tap one for its archive.

Alerts: 141
Warnings: 36
Watches: 26
Advisories: 33
Busiest month: June30 alerts
Busiest day: June 17, 20096 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 5 tornado warnings covering Keya Paha County in 2009 had a tornado report inside them.

Keya Paha County, 2009

	Warnings	With a report	False alarm ratio	Reports	Inside a warning
Tornado warnings	5	1	80%	0
Severe thunderstorm warnings	17	3	82%	4	0%
Flash flood warnings	1	0	100%	0

Each office's whole area, 2009

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS North Platte, NE: tornado warnings	71	11	85%	20	65%	15 min
NWS North Platte, NE: severe thunderstorm warnings	416	197	53%	456	76%	22 min
NWS North Platte, NE: flash flood warnings	8	4	50%	4	100%	61 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 9, 3:34 AM CST	Wind Advisory	LBF	14 hr
Jan 11, 3:16 PM CST	Wind Advisory	LBF	27 hr
Jan 12, 2:46 AM CST	High Wind Warning	LBF	13 hr
Jan 12, 10:56 AM CST	Mesoscale Discussion	SPC	6 hr
Jan 12, 11:02 AM CST	Winter Storm Warning	LBF	5 hr
Jan 14, 2:58 AM CST	Wind Chill Advisory	LBF	10 hr
Jan 14, 4:40 PM CST	Wind Chill Advisory	LBF	9 hr
Jan 17, 3:17 AM CST	Wind Advisory	LBF	12 hr
Jan 18, 3:30 AM CST	Wind Advisory	LBF	15 hr
Jan 19, 3:19 AM CST	Wind Advisory	LBF	15 hr
Jan 24, 3:29 AM CST	Winter Weather Advisory	LBF	64 hr
Feb 9, 3:34 PM CST	Wind Advisory	LBF	12 hr
Feb 25, 3:04 PM CST	Winter Weather Advisory	LBF	16 hr
Feb 27, 3:30 AM CST	Winter Weather Advisory	LBF	21 hr
Feb 27, 11:25 AM CST	Mesoscale Discussion	SPC	4 hr
Mar 7, 3:40 AM CST	Winter Storm Warning	LBF	29 hr
Mar 7, 3:40 AM CST	Winter Weather Advisory	LBF	29 hr
Mar 9, 3:42 PM CDT	Winter Weather Advisory	LBF	23 hr
Mar 10, 3:03 PM CDT	Wind Chill Advisory	LBF	19 hr
Mar 15, 3:10 PM CDT	Fire Weather Watch	LBF	13 hr
Mar 16, 3:50 AM CDT	Red Flag Warning	LBF	16 hr
Mar 22, 3:26 PM CDT	Winter Weather Advisory	LBF	51 hr
Mar 23, 10:13 AM CDT	Mesoscale Discussion	SPC	2 hr
Mar 23, 12:16 PM CDT	Tornado Watch	SPC	4 hr
Mar 23, 3:11 PM CDT	Mesoscale Discussion	SPC	94 min
Mar 23, 3:21 PM CDT	Severe Thunderstorm Warning	LBF	39 min
Mar 24, 3:41 AM CDT	Wind Advisory	LBF	17 hr
Mar 29, 3:28 AM CDT	Winter Storm Watch	LBF	25 hr
Mar 29, 9:57 PM CDT	Winter Storm Warning	LBF	42 hr
Mar 30, 3:20 PM CDT	Mesoscale Discussion	SPC	6 hr
Mar 30, 3:54 PM CDT	Blizzard Warning	LBF	21 hr
Mar 30, 7:59 PM CDT	Mesoscale Discussion	SPC	4 hr
Mar 30, 10:02 PM CDT	Wind Advisory	LBF	21 hr
Mar 31, 1:22 AM CDT	Mesoscale Discussion	SPC	4 hr
Apr 2, 3:28 AM CDT	Winter Storm Watch	LBF	24 hr
Apr 3, 3:36 AM CDT	Blizzard Warning	LBF	51 hr
Apr 4, 11:25 AM CDT	Mesoscale Discussion	SPC	3 hr
Apr 4, 3:20 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 14, 5:28 PM CDT	Wind Advisory	LBF	28 hr
Apr 22, 3:03 PM CDT	Fire Weather Watch	LBF	13 hr
Apr 23, 4:18 AM CDT	Red Flag Warning	LBF	16 hr
Apr 29, 9:27 PM CDT	Mesoscale Discussion	SPC	93 min
May 4, 6:21 PM CDT	Mesoscale Discussion	SPC	84 min
May 8, 2:13 PM CDT	Wind Advisory	LBF	5 hr
May 12, 3:09 PM CDT	Wind Advisory	LBF	29 hr
May 12, 7:08 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
May 12, 8:42 PM CDT	Mesoscale Discussion	SPC	93 min
May 19, 3:34 AM CDT	Wind Advisory	LBF	19 hr
May 19, 2:58 PM CDT	Red Flag Warning	LBF	4 hr
May 20, 3:01 PM CDT	Mesoscale Discussion	SPC	89 min
May 29, 6:15 PM CDT	Mesoscale Discussion	SPC	60 min
May 31, 4:30 PM CDT	Severe Thunderstorm Warning	LBF	23 min
Jun 7, 11:16 AM CDT	Mesoscale Discussion	SPC	119 min
Jun 13, 5:26 PM CDT	Mesoscale Discussion	SPC	64 min
Jun 13, 6:21 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Jun 13, 8:58 PM CDT	Mesoscale Discussion	SPC	62 min
Jun 14, 7:17 PM CDT	Mesoscale Discussion	SPC	118 min
Jun 15, 4:08 PM CDT	Mesoscale Discussion	SPC	67 min
Jun 15, 6:45 PM CDT	Severe Thunderstorm Warning	LBF	30 min
Jun 15, 7:09 PM CDT	Severe Thunderstorm Warning	LBF	66 min
Jun 17, 5:02 PM CDT	Mesoscale Discussion	SPC	88 min
Jun 17, 5:26 PM CDT	Mesoscale Discussion	SPC	94 min
Jun 17, 5:37 PM CDT	Tornado Warning	LBF	38 min
Jun 17, 5:43 PM CDT	Mesoscale Discussion	SPC	92 min
Jun 17, 6:15 PM CDT	Tornado Warning	LBF	30 min
Jun 17, 6:21 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 17, 11:01 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 18, 1:46 AM CDT	Mesoscale Discussion	SPC	89 min
Jun 18, 6:52 PM CDT	Mesoscale Discussion	SPC	113 min
Jun 18, 11:55 PM CDT	Severe Thunderstorm Watch	SPC	4 hr
Jun 23, 1:38 AM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 23, 4:43 AM CDT	Mesoscale Discussion	SPC	92 min
Jun 23, 7:24 AM CDT	Mesoscale Discussion	SPC	96 min
Jun 24, 10:24 PM CDT	Tornado Warning	LBF	36 min
Jun 24, 10:57 PM CDT	Tornado Warning	LBF	33 min
Jun 24, 11:30 PM CDT	Tornado Warning	LBF	30 min
Jun 26, 4:50 PM CDT	Tornado Watch	SPC	7 hr
Jun 26, 8:41 PM CDT	Severe Thunderstorm Warning	LBF	64 min
Jun 26, 9:37 PM CDT	Severe Thunderstorm Warning	LBF	23 min
Jun 26, 9:50 PM CDT	Severe Thunderstorm Warning	LBF	55 min
Jun 26, 10:16 PM CDT	Severe Thunderstorm Warning	LBF	12 min
Jun 29, 8:37 PM CDT	Severe Thunderstorm Warning	LBF	38 min
Jul 7, 11:05 PM CDT	Mesoscale Discussion	SPC	55 min
Jul 9, 3:07 AM CDT	Mesoscale Discussion	SPC	83 min
Jul 11, 7:14 AM CDT	Mesoscale Discussion	SPC	61 min
Jul 13, 5:52 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 13, 7:39 PM CDT	Severe Thunderstorm Warning	LBF	66 min
Jul 13, 11:24 PM CDT	Mesoscale Discussion	SPC	66 min
Jul 13, 11:35 PM CDT	Severe Thunderstorm Warning	LBF	55 min
Jul 16, 4:12 AM CDT	Mesoscale Discussion	SPC	2 hr
Jul 23, 3:30 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 23, 7:41 PM CDT	Mesoscale Discussion	SPC	64 min
Jul 23, 8:20 PM CDT	Severe Thunderstorm Warning	LBF	40 min
Jul 31, 1:35 PM CDT	Mesoscale Discussion	SPC	115 min
Aug 3, 6:58 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 3, 8:02 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 3, 10:14 PM CDT	Severe Thunderstorm Warning	LBF	46 min
Aug 3, 10:40 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 4, 12:16 AM CDT	Severe Thunderstorm Warning	LBF	29 min
Aug 4, 10:30 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 4, 11:37 PM CDT	Mesoscale Discussion	SPC	83 min
Aug 6, 9:15 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 7, 8:57 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Aug 8, 10:52 AM CDT	Mesoscale Discussion	SPC	23 min
Aug 8, 11:15 AM CDT	Severe Thunderstorm Watch	SPC	4 hr
Aug 8, 12:36 PM CDT	Severe Thunderstorm Warning	LBF	39 min
Aug 8, 2:17 PM CDT	Mesoscale Discussion	SPC	58 min
Aug 12, 2:22 PM CDT	Mesoscale Discussion	SPC	83 min
Aug 14, 4:28 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 14, 7:45 PM CDT	Mesoscale Discussion	SPC	60 min
Aug 14, 11:01 PM CDT	Flash Flood Warning	LBF	3 hr
Aug 15, 3:08 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Aug 15, 6:52 PM CDT	Mesoscale Discussion	SPC	53 min
Aug 18, 3:35 PM CDT	Mesoscale Discussion	SPC	115 min
Aug 18, 6:10 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Aug 18, 8:12 PM CDT	Severe Thunderstorm Warning	LBF	33 min
Aug 18, 9:41 PM CDT	Mesoscale Discussion	SPC	64 min
Sep 8, 2:53 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Sep 8, 7:10 PM CDT	Mesoscale Discussion	SPC	2 hr
Sep 20, 9:40 PM CDT	Severe Thunderstorm Warning	LBF	28 min
Sep 26, 2:34 PM CDT	Wind Advisory	LBF	25 hr
Sep 28, 3:45 AM CDT	Frost Advisory	LBF	29 hr
Sep 30, 3:57 PM CDT	Wind Advisory	LBF	49 hr
Oct 10, 3:53 PM CDT	Winter Storm Watch	LBF	12 hr
Oct 11, 3:41 AM CDT	Winter Weather Advisory	LBF	30 hr
Oct 20, 7:07 AM CDT	Dense Fog Advisory	LBF	5 hr
Oct 27, 4:04 PM CDT	Winter Storm Warning	LBF	66 hr
Oct 29, 3:08 AM CDT	Winter Weather Advisory	LBF	34 hr
Oct 29, 11:53 AM CDT	Winter Storm Watch	LBF	4 hr
Oct 29, 6:57 PM CDT	Mesoscale Discussion	SPC	4 hr
Nov 6, 9:23 AM CST	Red Flag Warning	LBF	9 hr
Dec 7, 3:18 PM CST	Winter Weather Advisory	LBF	36 hr
Dec 8, 3:41 AM CST	Wind Chill Advisory	LBF	30 hr
Dec 9, 3:43 PM CST	Wind Chill Advisory	LBF	18 hr
Dec 13, 2:43 PM CST	Wind Chill Advisory	LBF	21 hr
Dec 21, 4:13 AM CST	Winter Storm Watch	LBF	11 hr
Dec 21, 3:40 PM CST	Winter Storm Warning	LBF	5 days
Dec 21, 5:15 PM CST	Winter Weather Advisory	LBF	6 hr
Dec 24, 4:44 AM CST	Winter Weather Advisory	LBF	3 days
Dec 24, 3:40 PM CST	Blizzard Warning	LBF	44 hr
Dec 25, 7:21 AM CST	Mesoscale Discussion	SPC	5 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	17
Tornado Warning	5
Severe Thunderstorm Watch	17
Tornado Watch	2
Mesoscale Discussion	46
Flooding
Flash Flood Warning	1
Winter
Blizzard Warning	3
Winter Storm Warning	5
Winter Storm Watch	5
Winter Weather Advisory	11
Cold
Frost Advisory	1
Wind Chill Advisory	6
Wind and dust
High Wind Warning	1
Wind Advisory	14
Fire
Red Flag Warning	4
Fire Weather Watch	2
Fog and smoke
Dense Fog Advisory	1

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2008 2010

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.