Alert archive / Nebraska / Richardson County

Weather alerts in Richardson County, Nebraska, 2009

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

Richardson County and its neighbors

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

Alerts: 158
Warnings: 35
Watches: 30
Advisories: 34
Busiest month: June58 alerts
Busiest day: June 7, 200912 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 1 tornado warnings covering Richardson County in 2009 had a tornado report inside them.

Richardson County, 2009

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	1	0	100%	0
Severe thunderstorm warnings	22	15	32%	17	88%	20 min
Flash flood warnings	2	0	100%	1	0%

Each office's whole area, 2009

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Omaha, NE: tornado warnings	17	5	71%	7	100%	16 min
NWS Omaha, NE: severe thunderstorm warnings	216	129	40%	280	85%	21 min
NWS Omaha, NE: flash flood warnings	7	2	71%	5	80%	137 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 11, 2:49 PM CST	Wind Advisory	OAX	13 hr
Jan 12, 2:56 AM CST	Winter Weather Advisory	OAX	7 hr
Jan 12, 9:31 AM CST	Wind Advisory	OAX	11 hr
Jan 14, 4:09 AM CST	Wind Chill Advisory	OAX	32 hr
Feb 9, 3:13 AM CST	Wind Advisory	OAX	24 hr
Feb 9, 8:43 AM CST	Mesoscale Discussion	SPC	32 min
Feb 11, 1:02 PM CST	Winter Storm Watch	OAX	25 hr
Feb 12, 1:44 PM CST	Winter Storm Warning	OAX	27 hr
Feb 12, 1:44 PM CST	Winter Weather Advisory	OAX	24 hr
Feb 27, 3:35 AM CST	Winter Weather Advisory	OAX	33 hr
Feb 27, 6:22 PM CST	Mesoscale Discussion	SPC	4 hr
Mar 6, 9:17 PM CST	Mesoscale Discussion	SPC	118 min
Mar 22, 3:13 PM CDT	Wind Advisory	OAX	31 hr
Mar 23, 3:11 PM CDT	Mesoscale Discussion	SPC	94 min
Mar 23, 3:50 PM CDT	Tornado Watch	SPC	6 hr
Mar 23, 6:01 PM CDT	Severe Thunderstorm Warning	OAX	59 min
Mar 23, 6:04 PM CDT	Mesoscale Discussion	SPC	116 min
Mar 23, 6:31 PM CDT	Severe Thunderstorm Warning	OAX	30 min
Mar 23, 6:58 PM CDT	Severe Thunderstorm Warning	OAX	32 min
Mar 31, 11:22 AM CDT	Wind Advisory	OAX	8 hr
Apr 4, 3:00 AM CDT	Wind Advisory	OAX	16 hr
Apr 4, 1:12 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 4, 2:06 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Apr 4, 3:52 PM CDT	Mesoscale Discussion	SPC	53 min
Apr 5, 3:30 AM CDT	Winter Weather Advisory	OAX	13 hr
Apr 5, 11:39 AM CDT	Wind Advisory	OAX	7 hr
Apr 20, 11:02 AM CDT	Wind Advisory	OAX	8 hr
Apr 20, 2:01 PM CDT	Red Flag Warning	OAX	5 hr
Apr 25, 10:09 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Apr 26, 2:10 AM CDT	Mesoscale Discussion	SPC	95 min
Apr 26, 3:30 AM CDT	Flash Flood Watch	OAX	14 hr
Apr 26, 9:21 AM CDT	Severe Thunderstorm Warning	OAX	41 min
Apr 26, 9:34 AM CDT	Severe Thunderstorm Watch	SPC	6 hr
Apr 26, 12:30 PM CDT	Mesoscale Discussion	SPC	60 min
Apr 26, 12:48 PM CDT	Tornado Watch	SPC	4 hr
Apr 26, 2:41 PM CDT	Mesoscale Discussion	SPC	3 hr
Apr 26, 3:45 PM CDT	Severe Thunderstorm Warning	OAX	22 min
May 7, 1:12 PM CDT	Mesoscale Discussion	SPC	93 min
May 7, 1:44 PM CDT	Tornado Watch	SPC	6 hr
May 7, 3:55 PM CDT	Mesoscale Discussion	SPC	65 min
May 7, 5:42 PM CDT	Mesoscale Discussion	SPC	2 hr
May 12, 1:22 PM CDT	Mesoscale Discussion	SPC	53 min
May 15, 2:03 AM CDT	Mesoscale Discussion	SPC	87 min
May 15, 7:14 AM CDT	Mesoscale Discussion	SPC	91 min
May 15, 7:42 AM CDT	Severe Thunderstorm Watch	SPC	5 hr
May 15, 10:01 AM CDT	Severe Thunderstorm Warning	OAX	44 min
May 15, 10:30 AM CDT	Flash Flood Warning	OAX	2 hr
May 15, 10:43 AM CDT	Severe Thunderstorm Warning	OAX	37 min
May 15, 11:48 AM CDT	Mesoscale Discussion	SPC	57 min
Jun 1, 2:55 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 1, 3:29 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Jun 1, 3:44 PM CDT	Flash Flood Watch	OAX	15 hr
Jun 1, 4:10 PM CDT	Severe Thunderstorm Warning	OAX	35 min
Jun 1, 5:25 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 1, 6:52 PM CDT	Mesoscale Discussion	SPC	83 min
Jun 1, 8:11 PM CDT	Areal Flood Advisory	OAX	4 hr
Jun 1, 9:27 PM CDT	Mesoscale Discussion	SPC	63 min
Jun 6, 12:35 AM CDT	Severe Thunderstorm Watch	SPC	4 hr
Jun 6, 2:22 AM CDT	Mesoscale Discussion	SPC	23 min
Jun 6, 3:12 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 6, 5:21 PM CDT	Mesoscale Discussion	SPC	114 min
Jun 6, 9:01 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 6, 11:04 PM CDT	Mesoscale Discussion	SPC	86 min
Jun 6, 11:09 PM CDT	Severe Thunderstorm Warning	OAX	51 min
Jun 7, 12:01 AM CDT	Severe Thunderstorm Warning	OAX	44 min
Jun 7, 12:44 AM CDT	Mesoscale Discussion	SPC	61 min
Jun 7, 4:45 AM CDT	Mesoscale Discussion	SPC	30 min
Jun 7, 2:36 PM CDT	Mesoscale Discussion	SPC	114 min
Jun 7, 3:45 PM CDT	Tornado Watch	SPC	7 hr
Jun 7, 4:54 PM CDT	Tornado Warning	OAX	66 min
Jun 7, 5:25 PM CDT	Severe Thunderstorm Warning	OAX	35 min
Jun 7, 5:57 PM CDT	Severe Thunderstorm Warning	OAX	50 min
Jun 7, 5:59 PM CDT	Severe Thunderstorm Warning	OAX	46 min
Jun 7, 10:15 PM CDT	Severe Thunderstorm Warning	OAX	45 min
Jun 7, 10:22 PM CDT	Mesoscale Discussion	SPC	53 min
Jun 7, 10:30 PM CDT	Severe Thunderstorm Warning	OAX	60 min
Jun 7, 10:53 PM CDT	Tornado Watch	SPC	5 hr
Jun 12, 5:32 PM CDT	Mesoscale Discussion	SPC	58 min
Jun 14, 10:36 PM CDT	Mesoscale Discussion	SPC	114 min
Jun 14, 11:45 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 15, 1:09 AM CDT	Areal Flood Advisory	OAX	3 hr
Jun 15, 6:07 AM CDT	River Flood Advisory	OAX	36 hr
Jun 15, 4:01 PM CDT	Flash Flood Watch	OAX	10 hr
Jun 15, 7:33 PM CDT	Mesoscale Discussion	SPC	87 min
Jun 15, 8:14 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 15, 9:11 PM CDT	Severe Thunderstorm Warning	OAX	64 min
Jun 15, 9:32 PM CDT	Mesoscale Discussion	SPC	88 min
Jun 15, 9:59 PM CDT	Areal Flood Advisory	OAX	3 hr
Jun 15, 10:25 PM CDT	Flash Flood Warning	OAX	5 hr
Jun 15, 11:18 PM CDT	Mesoscale Discussion	SPC	87 min
Jun 16, 2:30 AM CDT	Mesoscale Discussion	SPC	60 min
Jun 17, 12:17 PM CDT	Mesoscale Discussion	SPC	58 min
Jun 17, 12:52 PM CDT	Tornado Watch	SPC	8 hr
Jun 17, 2:42 PM CDT	Severe Thunderstorm Warning	OAX	63 min
Jun 17, 2:47 PM CDT	Mesoscale Discussion	SPC	28 min
Jun 17, 3:55 PM CDT	Severe Thunderstorm Warning	OAX	50 min
Jun 17, 5:43 PM CDT	Mesoscale Discussion	SPC	92 min
Jun 17, 9:04 PM CDT	Tornado Watch	SPC	3 hr
Jun 17, 11:33 PM CDT	Mesoscale Discussion	SPC	87 min
Jun 19, 12:37 PM CDT	Mesoscale Discussion	SPC	83 min
Jun 19, 1:36 PM CDT	Severe Thunderstorm Watch	SPC	4 hr
Jun 21, 12:56 AM CDT	Mesoscale Discussion	SPC	94 min
Jun 21, 3:46 PM CDT	Heat Advisory	OAX	3 days
Jun 23, 1:31 PM CDT	Excessive Heat Warning	OAX	25 hr
Jun 24, 2:40 PM CDT	Severe Thunderstorm Warning	OAX	35 min
Jun 24, 3:10 PM CDT	Severe Thunderstorm Warning	OAX	50 min
Jun 24, 3:36 PM CDT	Mesoscale Discussion	SPC	114 min
Jul 3, 4:54 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jul 3, 9:20 PM CDT	Mesoscale Discussion	SPC	55 min
Jul 8, 2:16 AM CDT	Mesoscale Discussion	SPC	59 min
Jul 9, 9:32 AM CDT	Severe Thunderstorm Watch	SPC	4 hr
Jul 9, 11:54 AM CDT	Mesoscale Discussion	SPC	96 min
Jul 10, 2:28 AM CDT	Mesoscale Discussion	SPC	62 min
Jul 10, 2:36 AM CDT	Severe Thunderstorm Warning	OAX	39 min
Jul 14, 3:05 PM CDT	Mesoscale Discussion	SPC	115 min
Aug 4, 1:10 AM CDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 8, 3:38 AM CDT	Heat Advisory	OAX	14 hr
Aug 9, 1:18 PM CDT	Mesoscale Discussion	SPC	27 min
Aug 9, 3:44 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 9, 5:49 PM CDT	Mesoscale Discussion	SPC	86 min
Aug 17, 12:57 AM CDT	Severe Thunderstorm Warning	OAX	33 min
Aug 17, 1:22 AM CDT	Mesoscale Discussion	SPC	83 min
Aug 19, 5:19 PM CDT	Mesoscale Discussion	SPC	26 min
Aug 19, 5:32 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 26, 5:45 AM CDT	Mesoscale Discussion	SPC	90 min
Sep 5, 6:59 AM CDT	Dense Fog Advisory	OAX	2 hr
Sep 7, 5:17 AM CDT	Dense Fog Advisory	OAX	5 hr
Sep 30, 11:44 PM CDT	Mesoscale Discussion	SPC	91 min
Oct 1, 3:10 PM CDT	Wind Advisory	OAX	24 hr
Oct 9, 4:13 AM CDT	Freeze Watch	OAX	11 hr
Oct 9, 4:13 AM CDT	Freeze Warning	OAX	29 hr
Oct 10, 5:56 AM CDT	Mesoscale Discussion	SPC	5 hr
Oct 10, 3:34 PM CDT	Freeze Warning	OAX	12 hr
Nov 15, 2:55 PM CST	Winter Weather Advisory	OAX	30 hr
Nov 16, 6:41 AM CST	Mesoscale Discussion	SPC	5 hr
Nov 16, 9:20 AM CST	Winter Storm Warning	OAX	8 hr
Nov 16, 12:12 PM CST	Mesoscale Discussion	SPC	4 hr
Nov 20, 3:54 AM CST	Dense Fog Advisory	OAX	6 hr
Nov 20, 10:18 AM CST	Dense Fog Advisory	OAX	102 min
Nov 20, 9:56 PM CST	Dense Fog Advisory	OAX	14 hr
Dec 6, 4:20 AM CST	Winter Storm Watch	OAX	35 hr
Dec 6, 4:20 AM CST	Winter Weather Advisory	OAX	23 hr
Dec 7, 4:04 AM CST	Winter Storm Warning	OAX	41 hr
Dec 7, 3:45 PM CST	Blizzard Watch	OAX	21 hr
Dec 8, 11:22 AM CST	Mesoscale Discussion	SPC	5 hr
Dec 8, 12:55 PM CST	Blizzard Warning	OAX	17 hr
Dec 8, 9:38 PM CST	Mesoscale Discussion	SPC	6 hr
Dec 9, 5:42 AM CST	Winter Weather Advisory	OAX	10 hr
Dec 9, 3:34 PM CST	Wind Chill Advisory	OAX	18 hr
Dec 13, 4:28 AM CST	Freezing Fog Advisory	OAX	5 hr
Dec 13, 8:17 PM CST	Winter Weather Advisory	OAX	13 hr
Dec 21, 4:01 AM CST	Winter Storm Watch	OAX	60 hr
Dec 22, 3:47 PM CST	Winter Storm Warning	OAX	56 hr
Dec 22, 3:47 PM CST	Winter Weather Advisory	OAX	32 hr
Dec 22, 3:47 PM CST	Freezing Rain Advisory	OAX	13 hr
Dec 24, 1:32 PM CST	Mesoscale Discussion	SPC	4 hr
Dec 24, 4:00 PM CST	Blizzard Warning	OAX	44 hr
Dec 25, 3:26 PM CST	Winter Weather Advisory	OAX	39 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	22
Tornado Warning	1
Severe Thunderstorm Watch	15
Tornado Watch	7
Mesoscale Discussion	59
Flooding
Flash Flood Warning	2
Flash Flood Watch	3
Areal Flood Advisory	3
River Flood Advisory	1
Winter
Blizzard Warning	2
Winter Storm Warning	4
Blizzard Watch	1
Winter Storm Watch	3
Freezing Rain Advisory	1
Winter Weather Advisory	10
Heat
Excessive Heat Warning	1
Heat Advisory	2
Cold
Freeze Warning	2
Freeze Watch	1
Wind Chill Advisory	2
Wind and dust
Wind Advisory	9
Fire
Red Flag Warning	1
Fog and smoke
Dense Fog Advisory	5
Freezing 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.