Weather alerts in Rock County, Nebraska, 2010

230 weather alerts in 2010, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Rock County and its neighbors

Each county as a circle sized by its count in 2010. Tap one for its archive.

Alerts: 230
Warnings: 65
Watches: 50
Advisories: 57
Busiest month: June58 alerts
Busiest day: May 24, 201013 alerts

Over time

By month

Warning verification

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

0 of 5 tornado warnings covering Rock County in 2010 had a tornado report inside them.

Rock County, 2010

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	5	0	100%	0
Severe thunderstorm warnings	41	27	34%	11	73%	20 min
Flash flood warnings	2	0	100%	0

Each office's whole area, 2010

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS North Platte, NE: tornado warnings	74	6	92%	13	46%	16 min
NWS North Platte, NE: severe thunderstorm warnings	388	213	45%	413	80%	21 min
NWS North Platte, NE: flash flood warnings	29	5	83%	13	69%	119 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 1, 9:28 PM CST	Wind Chill Advisory	LBF	13 hr
Jan 5, 3:34 AM CST	Winter Weather Advisory	LBF	59 hr
Jan 5, 9:32 PM CST	Winter Storm Warning	LBF	30 hr
Jan 6, 3:49 AM CST	Wind Chill Advisory	LBF	54 hr
Jan 7, 3:29 AM CST	Wind Chill Warning	LBF	31 hr
Jan 18, 3:25 PM CST	Dense Fog Advisory	LBF	21 hr
Jan 19, 3:23 PM CST	Winter Weather Advisory	LBF	19 hr
Jan 20, 6:56 PM CST	Dense Fog Advisory	LBF	7 hr
Jan 21, 2:13 AM CST	Freezing Fog Advisory	LBF	9 hr
Jan 21, 7:24 PM CST	Dense Fog Advisory	LBF	9 hr
Jan 22, 3:54 AM CST	Freezing Fog Advisory	LBF	97 min
Jan 22, 5:28 AM CST	Winter Weather Advisory	LBF	6 hr
Jan 22, 3:45 PM CST	Winter Weather Advisory	LBF	6 hr
Jan 23, 5:42 AM CST	Winter Weather Advisory	LBF	4 hr
Jan 24, 3:36 AM CST	Wind Advisory	LBF	17 hr
Jan 24, 9:40 PM CST	Wind Advisory	LBF	20 hr
Feb 3, 3:49 PM CST	Winter Weather Advisory	LBF	40 hr
Feb 8, 3:57 AM CST	Wind Chill Advisory	LBF	9 hr
Feb 14, 3:27 AM CST	Wind Advisory	LBF	15 hr
Feb 14, 3:27 AM CST	Winter Weather Advisory	LBF	8 hr
Feb 14, 11:42 AM CST	Winter Weather Advisory	LBF	6 hr
Feb 28, 2:45 AM CST	Freezing Fog Advisory	LBF	6 hr
Mar 2, 8:51 PM CST	Freezing Fog Advisory	LBF	82 min
Mar 2, 10:13 PM CST	Dense Fog Advisory	LBF	11 hr
Mar 8, 8:53 AM CST	Dense Fog Advisory	LBF	6 hr
Mar 10, 9:32 AM CST	River Flood Warning	LBF	48 hr
Mar 10, 3:29 PM CST	Winter Storm Watch	LBF	12 hr
Mar 11, 3:40 AM CST	Winter Storm Warning	LBF	32 hr
Mar 18, 3:33 AM CDT	Winter Weather Advisory	LBF	36 hr
Mar 29, 4:28 AM CDT	Red Flag Warning	LBF	16 hr
Mar 30, 4:09 AM CDT	Red Flag Warning	LBF	15 hr
Mar 31, 3:50 PM CDT	Fire Weather Watch	LBF	12 hr
Apr 1, 4:08 AM CDT	Red Flag Warning	LBF	17 hr
Apr 12, 3:43 PM CDT	Wind Advisory	LBF	30 hr
Apr 13, 1:17 PM CDT	High Wind Warning	LBF	8 hr
Apr 13, 3:44 PM CDT	Mesoscale Discussion	SPC	91 min
Apr 13, 5:38 PM CDT	Mesoscale Discussion	SPC	97 min
Apr 23, 1:18 PM CDT	Tornado Watch	SPC	7 hr
Apr 23, 6:14 PM CDT	Severe Thunderstorm Warning	LBF	46 min
Apr 23, 7:02 PM CDT	Mesoscale Discussion	SPC	88 min
Apr 23, 7:28 PM CDT	Tornado Watch	SPC	5 hr
Apr 23, 9:22 PM CDT	Mesoscale Discussion	SPC	53 min
Apr 24, 3:38 AM CDT	Wind Advisory	LBF	15 hr
Apr 26, 3:51 AM CDT	Wind Advisory	LBF	16 hr
May 1, 3:30 AM CDT	Wind Advisory	LBF	13 hr
May 3, 2:49 PM CDT	Fire Weather Watch	LBF	13 hr
May 4, 4:11 AM CDT	Red Flag Warning	LBF	15 hr
May 5, 3:44 AM CDT	Wind Advisory	LBF	12 hr
May 7, 3:59 AM CDT	Wind Advisory	LBF	15 hr
May 10, 2:32 AM CDT	Mesoscale Discussion	SPC	88 min
May 22, 4:09 AM CDT	Wind Advisory	LBF	12 hr
May 22, 8:52 PM CDT	Tornado Watch	SPC	4 hr
May 23, 12:39 PM CDT	Wind Advisory	LBF	33 hr
May 23, 7:50 PM CDT	Severe Thunderstorm Watch	SPC	4 hr
May 23, 9:43 PM CDT	Severe Thunderstorm Warning	LBF	62 min
May 23, 10:19 PM CDT	Tornado Warning	LBF	41 min
May 23, 11:12 PM CDT	Mesoscale Discussion	SPC	2 hr
May 23, 11:54 PM CDT	Severe Thunderstorm Watch	SPC	4 hr
May 24, 1:57 AM CDT	Severe Thunderstorm Warning	LBF	48 min
May 24, 4:05 AM CDT	High Wind Warning	LBF	15 hr
May 24, 2:06 PM CDT	Tornado Warning	LBF	24 min
May 24, 2:33 PM CDT	Tornado Watch	SPC	5 hr
May 24, 3:26 PM CDT	Tornado Warning	LBF	19 min
May 24, 3:52 PM CDT	Tornado Warning	LBF	24 min
May 24, 4:12 PM CDT	Tornado Warning	LBF	35 min
May 24, 6:03 PM CDT	Mesoscale Discussion	SPC	87 min
May 24, 7:17 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
May 24, 7:26 PM CDT	Severe Thunderstorm Warning	LBF	64 min
May 29, 2:20 PM CDT	Mesoscale Discussion	SPC	25 min
May 29, 3:39 PM CDT	Mesoscale Discussion	SPC	36 min
May 29, 3:58 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
May 29, 8:29 PM CDT	Severe Thunderstorm Warning	LBF	19 min
May 29, 8:34 PM CDT	Mesoscale Discussion	SPC	86 min
May 31, 3:22 PM CDT	Mesoscale Discussion	SPC	113 min
Jun 1, 8:46 AM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 1, 10:47 AM CDT	Severe Thunderstorm Warning	LBF	24 min
Jun 1, 12:37 PM CDT	Mesoscale Discussion	SPC	53 min
Jun 1, 12:46 PM CDT	Severe Thunderstorm Warning	LBF	44 min
Jun 1, 3:20 PM CDT	Areal Flood Advisory	LBF	4 hr
Jun 1, 3:45 PM CDT	Mesoscale Discussion	SPC	60 min
Jun 3, 3:14 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 5, 12:31 AM CDT	Mesoscale Discussion	SPC	29 min
Jun 5, 12:45 AM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 7, 3:40 PM CDT	Flash Flood Watch	LBF	15 hr
Jun 7, 7:23 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 7, 10:31 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 10, 1:41 AM CDT	Mesoscale Discussion	SPC	2 hr
Jun 10, 3:16 AM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 10, 4:28 AM CDT	Severe Thunderstorm Warning	LBF	47 min
Jun 10, 4:45 AM CDT	Severe Thunderstorm Warning	LBF	45 min
Jun 10, 4:58 AM CDT	Severe Thunderstorm Warning	LBF	47 min
Jun 10, 5:10 AM CDT	Severe Thunderstorm Warning	LBF	50 min
Jun 10, 5:36 AM CDT	Mesoscale Discussion	SPC	114 min
Jun 10, 5:47 AM CDT	Severe Thunderstorm Warning	LBF	43 min
Jun 10, 8:36 AM CDT	Areal Flood Advisory	LBF	6 hr
Jun 10, 3:25 PM CDT	Flood Watch	LBF	4 days
Jun 10, 7:01 PM CDT	Tornado Watch	SPC	5 hr
Jun 10, 10:37 PM CDT	Mesoscale Discussion	SPC	53 min
Jun 10, 10:57 PM CDT	Severe Thunderstorm Warning	LBF	48 min
Jun 10, 11:24 PM CDT	Severe Thunderstorm Warning	LBF	51 min
Jun 10, 11:33 PM CDT	Severe Thunderstorm Warning	LBF	42 min
Jun 10, 11:47 PM CDT	Severe Thunderstorm Watch	SPC	4 hr
Jun 11, 12:07 AM CDT	Severe Thunderstorm Warning	LBF	38 min
Jun 11, 1:31 AM CDT	Areal Flood Advisory	LBF	7 hr
Jun 11, 1:45 AM CDT	Mesoscale Discussion	SPC	60 min
Jun 11, 10:03 AM CDT	Areal Flood Advisory	LBF	8 hr
Jun 11, 11:17 PM CDT	Severe Thunderstorm Warning	LBF	43 min
Jun 11, 11:43 PM CDT	Flash Flood Warning	LBF	10 hr
Jun 12, 1:31 AM CDT	Areal Flood Advisory	LBF	3 hr
Jun 12, 1:49 AM CDT	Areal Flood Warning	LBF	6 hr
Jun 12, 9:26 AM CDT	Areal Flood Advisory	LBF	6 hr
Jun 12, 4:59 PM CDT	Areal Flood Advisory	LBF	12 hr
Jun 12, 11:55 PM CDT	Severe Thunderstorm Warning	LBF	50 min
Jun 13, 12:34 AM CDT	Flash Flood Warning	LBF	10 hr
Jun 13, 10:30 AM CDT	Areal Flood Warning	LBF	48 hr
Jun 15, 10:23 AM CDT	Areal Flood Advisory	LBF	24 hr
Jun 17, 3:48 AM CDT	Wind Advisory	LBF	13 hr
Jun 18, 3:19 AM CDT	Mesoscale Discussion	SPC	86 min
Jun 19, 10:08 PM CDT	Mesoscale Discussion	SPC	67 min
Jun 19, 10:39 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 20, 4:26 AM CDT	Mesoscale Discussion	SPC	94 min
Jun 20, 4:46 AM CDT	Mesoscale Discussion	SPC	89 min
Jun 20, 9:07 AM CDT	Flash Flood Watch	LBF	19 hr
Jun 22, 6:30 PM CDT	Tornado Watch	SPC	6 hr
Jun 22, 7:08 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 22, 9:59 PM CDT	Mesoscale Discussion	SPC	91 min
Jun 22, 10:00 PM CDT	Severe Thunderstorm Warning	LBF	45 min
Jun 22, 10:26 PM CDT	Severe Thunderstorm Warning	LBF	49 min
Jun 25, 5:32 PM CDT	Mesoscale Discussion	SPC	118 min
Jun 26, 3:58 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 26, 4:50 PM CDT	Tornado Watch	SPC	7 hr
Jun 26, 11:01 PM CDT	Severe Thunderstorm Warning	LBF	59 min
Jul 2, 3:59 AM CDT	Wind Advisory	LBF	12 hr
Jul 3, 3:03 PM CDT	Flash Flood Watch	LBF	13 hr
Jul 3, 5:27 PM CDT	Mesoscale Discussion	SPC	63 min
Jul 3, 6:17 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 3, 8:45 PM CDT	Mesoscale Discussion	SPC	60 min
Jul 3, 10:04 PM CDT	Mesoscale Discussion	SPC	56 min
Jul 6, 2:50 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 6, 6:22 PM CDT	Mesoscale Discussion	SPC	53 min
Jul 6, 9:20 PM CDT	Mesoscale Discussion	SPC	25 min
Jul 10, 1:55 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 10, 5:17 PM CDT	Mesoscale Discussion	SPC	58 min
Jul 10, 7:57 PM CDT	Severe Thunderstorm Warning	LBF	48 min
Jul 10, 9:16 PM CDT	Mesoscale Discussion	SPC	59 min
Jul 11, 6:13 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jul 11, 6:27 PM CDT	Severe Thunderstorm Warning	LBF	48 min
Jul 11, 6:42 PM CDT	Severe Thunderstorm Warning	LBF	48 min
Jul 11, 7:14 PM CDT	Severe Thunderstorm Warning	LBF	61 min
Jul 11, 7:38 PM CDT	Mesoscale Discussion	SPC	67 min
Jul 11, 8:29 PM CDT	Severe Thunderstorm Warning	LBF	31 min
Jul 17, 4:05 PM CDT	Mesoscale Discussion	SPC	55 min
Jul 17, 4:37 PM CDT	Tornado Watch	SPC	5 hr
Jul 17, 5:52 PM CDT	Severe Thunderstorm Warning	LBF	53 min
Jul 19, 5:42 PM CDT	Mesoscale Discussion	SPC	63 min
Jul 19, 6:31 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 21, 7:22 PM CDT	Mesoscale Discussion	SPC	83 min
Jul 21, 9:51 PM CDT	Areal Flood Advisory	LBF	3 hr
Jul 22, 3:39 PM CDT	Flood Watch	LBF	31 hr
Jul 22, 10:19 PM CDT	Mesoscale Discussion	SPC	86 min
Jul 27, 5:13 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 29, 3:30 PM CDT	Tornado Watch	SPC	7 hr
Jul 29, 6:12 PM CDT	Mesoscale Discussion	SPC	93 min
Jul 29, 9:04 PM CDT	Mesoscale Discussion	SPC	56 min
Aug 1, 4:49 PM CDT	Mesoscale Discussion	SPC	86 min
Aug 1, 5:15 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Aug 1, 8:03 PM CDT	Mesoscale Discussion	SPC	117 min
Aug 2, 1:44 PM CDT	Mesoscale Discussion	SPC	61 min
Aug 3, 3:02 PM CDT	Mesoscale Discussion	SPC	58 min
Aug 3, 3:37 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Aug 7, 2:24 AM CDT	Heat Advisory	LBF	37 hr
Aug 8, 2:10 PM CDT	Severe Thunderstorm Warning	LBF	50 min
Aug 8, 2:32 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 9, 6:26 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Aug 16, 2:50 PM CDT	Mesoscale Discussion	SPC	85 min
Aug 16, 3:08 PM CDT	Severe Thunderstorm Watch	SPC	4 hr
Aug 16, 5:32 PM CDT	Mesoscale Discussion	SPC	28 min
Aug 19, 5:30 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Aug 19, 6:08 PM CDT	Severe Thunderstorm Warning	LBF	52 min
Aug 19, 6:48 PM CDT	Severe Thunderstorm Warning	LBF	42 min
Aug 19, 6:54 PM CDT	Severe Thunderstorm Warning	LBF	51 min
Aug 19, 7:26 PM CDT	Severe Thunderstorm Warning	LBF	49 min
Aug 19, 8:11 PM CDT	Mesoscale Discussion	SPC	64 min
Aug 21, 4:44 PM CDT	Fire Weather Watch	LBF	11 hr
Aug 22, 3:15 AM CDT	Red Flag Warning	LBF	16 hr
Aug 25, 2:41 PM CDT	Fire Weather Watch	LBF	38 hr
Aug 27, 4:59 AM CDT	Red Flag Warning	LBF	16 hr
Aug 30, 2:45 PM CDT	Mesoscale Discussion	SPC	30 min
Aug 30, 3:23 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 30, 4:38 PM CDT	Severe Thunderstorm Warning	LBF	52 min
Aug 30, 4:56 PM CDT	Severe Thunderstorm Warning	LBF	49 min
Aug 30, 5:36 PM CDT	Severe Thunderstorm Warning	LBF	54 min
Sep 1, 11:42 PM CDT	Severe Thunderstorm Warning	LBF	48 min
Sep 2, 12:27 AM CDT	Severe Thunderstorm Warning	LBF	63 min
Sep 2, 1:11 AM CDT	Severe Thunderstorm Watch	SPC	5 hr
Sep 5, 3:02 PM CDT	Wind Advisory	LBF	28 hr
Sep 14, 5:43 PM CDT	Mesoscale Discussion	SPC	92 min
Sep 14, 6:22 PM CDT	Tornado Watch	SPC	4 hr
Sep 14, 8:02 PM CDT	Mesoscale Discussion	SPC	88 min
Sep 20, 8:34 PM CDT	Mesoscale Discussion	SPC	86 min
Sep 22, 8:48 AM CDT	Mesoscale Discussion	SPC	87 min
Sep 22, 8:59 AM CDT	Severe Thunderstorm Warning	LBF	46 min
Sep 22, 9:40 AM CDT	Severe Thunderstorm Warning	LBF	50 min
Sep 22, 3:24 PM CDT	Mesoscale Discussion	SPC	96 min
Sep 22, 3:46 PM CDT	Flash Flood Watch	LBF	18 hr
Sep 22, 4:00 PM CDT	Tornado Watch	SPC	7 hr
Sep 22, 7:41 PM CDT	Mesoscale Discussion	SPC	2 hr
Oct 2, 3:02 AM CDT	Frost Advisory	LBF	30 hr
Oct 7, 3:43 PM CDT	Fire Weather Watch	LBF	12 hr
Oct 14, 2:20 PM CDT	Fire Weather Watch	LBF	13 hr
Oct 23, 8:59 PM CDT	Severe Thunderstorm Warning	LBF	46 min
Oct 23, 9:04 PM CDT	Severe Thunderstorm Warning	LBF	41 min
Oct 25, 3:13 PM CDT	High Wind Watch	LBF	36 hr
Oct 25, 3:13 PM CDT	High Wind Warning	LBF	26 hr
Oct 26, 3:32 AM CDT	Wind Advisory	LBF	39 hr
Oct 26, 4:45 PM CDT	Wind Advisory	LBF	3 hr
Oct 27, 3:03 AM CDT	High Wind Warning	LBF	16 hr
Oct 29, 4:07 AM CDT	Fire Weather Watch	LBF	12 hr
Nov 20, 11:29 PM CST	Winter Weather Advisory	LBF	13 hr
Nov 22, 12:46 AM CST	Winter Weather Advisory	LBF	8 hr
Nov 23, 3:30 PM CST	Freezing Rain Advisory	LBF	21 hr
Nov 28, 4:01 PM CST	Wind Advisory	LBF	38 hr
Dec 10, 2:53 PM CST	Wind Advisory	LBF	27 hr
Dec 10, 10:19 PM CST	Winter Weather Advisory	LBF	20 hr
Dec 11, 3:18 PM CST	Wind Chill Advisory	LBF	19 hr
Dec 15, 3:18 PM CST	Winter Weather Advisory	LBF	5 hr
Dec 20, 2:10 AM CST	Winter Weather Advisory	LBF	8 hr
Dec 28, 11:42 PM CST	Winter Storm Watch	LBF	15 hr
Dec 29, 2:27 PM CST	Winter Storm Warning	LBF	58 hr
Dec 31, 11:22 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	41
Tornado Warning	5
Severe Thunderstorm Watch	23
Tornado Watch	11
Mesoscale Discussion	58
Flooding
Areal Flood Warning	2
Flash Flood Warning	2
River Flood Warning	1
Flash Flood Watch	4
Flood Watch	2
Areal Flood Advisory	9
Winter
Winter Storm Warning	3
Winter Storm Watch	2
Freezing Rain Advisory	1
Winter Weather Advisory	14
Heat
Heat Advisory	1
Cold
Wind Chill Warning	1
Frost Advisory	1
Wind Chill Advisory	4
Wind and dust
High Wind Warning	4
High Wind Watch	1
Wind Advisory	18
Fire
Red Flag Warning	6
Fire Weather Watch	7
Fog and smoke
Dense Fog Advisory	5
Freezing Fog Advisory	4

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2009 2011

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.