Alert archive / Oklahoma / Seminole County

Weather alerts in Seminole County, Oklahoma, 2023

224 weather alerts in 2023, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Seminole County and its neighbors

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

Alerts: 224
Warnings: 75
Watches: 26
Advisories: 63
Busiest month: July45 alerts
Busiest day: July 9, 202311 alerts

Over time

By month

Warning verification

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

2 of 8 tornado warnings covering Seminole County in 2023 had a tornado report inside them.

Seminole County, 2023

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	8	2	75%	0
Severe thunderstorm warnings	39	21	46%	18	89%	31 min
Flash flood warnings	4	3	25%	2	100%	94 min

Each office's whole area, 2023

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Norman, OK: tornado warnings	102	31	70%	37	86%	14 min
NWS Norman, OK: severe thunderstorm warnings	894	318	64%	884	84%	24 min
NWS Norman, OK: flash flood warnings	57	17	70%	38	74%	76 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 2, 2:02 PM CST	Mesoscale Discussion	SPC	118 min
Jan 2, 3:34 PM CST	Tornado Watch	SPC	6 hr
Jan 11, 2:13 PM CST	Wind Advisory	OUN	16 hr
Jan 23, 3:36 AM CST	Winter Storm Watch	OUN	10 hr
Jan 23, 3:36 AM CST	Winter Weather Advisory	OUN	50 hr
Jan 23, 1:23 PM CST	Winter Storm Warning	OUN	37 hr
Jan 24, 11:08 AM CST	Mesoscale Discussion	SPC	6 hr
Jan 29, 12:44 PM CST	Winter Weather Advisory	OUN	4 days
Jan 30, 8:58 AM CST	Winter Storm Warning	OUN	3 days
Jan 30, 12:00 PM CST	Winter Weather Advisory	OUN	3 days
Feb 5, 5:55 AM CST	Dense Fog Advisory	OUN	4 hr
Feb 13, 2:35 AM CST	Wind Advisory	OUN	39 hr
Feb 15, 3:20 PM CST	Mesoscale Discussion	SPC	55 min
Feb 15, 3:45 PM CST	Severe Thunderstorm Watch	SPC	7 hr
Feb 15, 8:17 PM CST	Severe Thunderstorm Warning Considerable damage threat	OUN	43 min
Feb 15, 8:25 PM CST	Tornado Warning	OUN	50 min
Feb 15, 8:48 PM CST	Areal Flood Advisory	OUN	3 hr
Feb 15, 9:00 PM CST	Tornado Warning	OUN	40 min
Feb 22, 4:30 AM CST	Special Weather Statement	OUN	30 min
Feb 25, 4:22 PM CST	Wind Advisory	OUN	38 hr
Feb 26, 7:02 PM CST	Mesoscale Discussion	SPC	118 min
Feb 26, 7:32 PM CST	Tornado Watch	SPC	5 hr
Feb 26, 9:27 PM CST	Severe Thunderstorm Warning Considerable damage threat	OUN	48 min
Feb 26, 9:31 PM CST	Severe Thunderstorm Warning Considerable damage threat	OUN	44 min
Feb 26, 9:36 PM CST	Tornado Warning Tornado observed	OUN	39 min
Feb 26, 9:56 PM CST	Tornado Warning	OUN	36 min
Feb 26, 10:15 PM CST	Severe Thunderstorm Warning Considerable damage threat	OUN	45 min
Feb 26, 10:16 PM CST	Severe Thunderstorm Warning Considerable damage threat	OUN	44 min
Feb 26, 10:17 PM CST	Mesoscale Discussion	SPC	88 min
Feb 26, 10:20 PM CST	Tornado Warning	OUN	14 min
Mar 2, 7:23 AM CST	Mesoscale Discussion	SPC	3 hr
Mar 16, 2:48 AM CDT	Wind Advisory	OUN	22 hr
Mar 22, 2:37 PM CDT	Flood Watch	OUN	43 hr
Mar 23, 1:57 PM CDT	River Flood Advisory	OUN	12 hr
Mar 23, 2:33 PM CDT	Mesoscale Discussion	SPC	87 min
Mar 23, 3:10 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Mar 23, 3:13 PM CDT	Special Weather Statement	OUN	32 min
Mar 23, 3:21 PM CDT	Severe Thunderstorm Warning	OUN	20 min
Mar 23, 6:42 PM CDT	Severe Thunderstorm Warning	OUN	28 min
Mar 23, 11:00 PM CDT	River Flood Warning	OUN	10 hr
Mar 24, 12:51 AM CDT	Areal Flood Advisory	OUN	3 hr
Mar 25, 1:26 AM CDT	Dense Fog Advisory	OUN	10 hr
Mar 30, 2:46 AM CDT	Wind Advisory	OUN	40 hr
Mar 30, 3:02 PM CDT	Mesoscale Discussion	SPC	118 min
Mar 31, 1:02 PM CDT	High Wind Warning	OUN	6 hr
Apr 4, 3:06 PM CDT	Mesoscale Discussion	SPC	114 min
Apr 19, 4:48 PM CDT	Tornado Watch	SPC	6 hr
Apr 19, 8:02 PM CDT	Mesoscale Discussion	SPC	88 min
Apr 19, 9:31 PM CDT	Mesoscale Discussion	SPC	59 min
Apr 19, 10:13 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	47 min
Apr 26, 8:11 AM CDT	River Flood Advisory	OUN	12 hr
May 5, 3:48 AM CDT	Dense Fog Advisory	OUN	5 hr
May 9, 5:56 AM CDT	Dense Fog Advisory	OUN	2 hr
May 11, 2:22 PM CDT	Mesoscale Discussion	SPC	113 min
May 11, 3:44 PM CDT	Tornado Watch	SPC	10 hr
May 11, 9:26 PM CDT	Tornado Warning	OUN	49 min
May 11, 10:01 PM CDT	Mesoscale Discussion	SPC	89 min
May 11, 10:12 PM CDT	Tornado Warning	OUN	33 min
May 12, 9:59 AM CDT	Flood Watch	OUN	3 days
May 12, 3:39 PM CDT	Severe Thunderstorm Watch	SPC	10 hr
May 13, 4:46 PM CDT	Special Weather Statement	OUN	29 min
May 15, 8:27 AM CDT	Areal Flood Advisory	OUN	4 hr
May 15, 9:10 AM CDT	Flash Flood Warning	OUN	5 hr
May 19, 6:04 AM CDT	Special Weather Statement	OUN	41 min
May 19, 6:43 AM CDT	Areal Flood Advisory	OUN	3 hr
May 19, 12:49 PM CDT	Mesoscale Discussion	SPC	86 min
May 19, 1:09 PM CDT	Severe Thunderstorm Watch	SPC	9 hr
May 19, 3:30 PM CDT	Mesoscale Discussion	SPC	90 min
Jun 15, 2:34 PM CDT	Tornado Watch	SPC	6 hr
Jun 15, 5:25 PM CDT	Severe Thunderstorm Warning	OUN	17 min
Jun 15, 6:29 PM CDT	Severe Thunderstorm Warning	OUN	29 min
Jun 15, 8:44 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 15, 9:35 PM CDT	Mesoscale Discussion	SPC	55 min
Jun 15, 9:47 PM CDT	Severe Thunderstorm Warning	OUN	43 min
Jun 15, 9:55 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	50 min
Jun 15, 10:45 PM CDT	Special Weather Statement	OUN	30 min
Jun 17, 8:21 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 17, 10:15 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 17, 10:52 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	38 min
Jun 17, 11:24 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	51 min
Jun 17, 11:26 PM CDT	Severe Thunderstorm Warning	OUN	49 min
Jun 18, 12:12 AM CDT	Severe Thunderstorm Warning	OUN	14 min
Jun 18, 1:34 AM CDT	Special Weather Statement	OUN	26 min
Jun 18, 2:44 PM CDT	Heat Advisory	OUN	54 hr
Jun 21, 10:02 AM CDT	Mesoscale Discussion	SPC	118 min
Jun 21, 11:46 AM CDT	Special Weather Statement	OUN	29 min
Jun 21, 12:14 PM CDT	Special Weather Statement	OUN	31 min
Jun 23, 11:18 AM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jun 23, 12:47 PM CDT	Mesoscale Discussion	SPC	118 min
Jun 23, 1:20 PM CDT	Special Weather Statement	OUN	40 min
Jun 23, 1:45 PM CDT	Heat Advisory	OUN	31 hr
Jun 23, 1:57 PM CDT	Special Weather Statement	OUN	33 min
Jun 23, 2:24 PM CDT	Severe Thunderstorm Warning	OUN	32 min
Jun 24, 3:23 AM CDT	Heat Advisory	OUN	41 hr
Jun 26, 2:55 PM CDT	Heat Advisory	OUN	29 hr
Jun 27, 8:53 AM CDT	Severe Thunderstorm Watch	SPC	4 hr
Jun 27, 3:27 PM CDT	Heat Advisory	OUN	30 hr
Jun 28, 2:33 PM CDT	Excessive Heat Warning	OUN	6 hr
Jun 28, 3:32 PM CDT	Heat Advisory	OUN	29 hr
Jul 3, 12:53 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 3, 3:15 PM CDT	Special Weather Statement	OUN	30 min
Jul 3, 4:49 PM CDT	Areal Flood Advisory	OUN	3 hr
Jul 7, 8:35 AM CDT	Severe Thunderstorm Warning	OUN	40 min
Jul 7, 9:14 AM CDT	Severe Thunderstorm Warning	OUN	20 min
Jul 8, 12:13 AM CDT	Severe Thunderstorm Warning	OUN	26 min
Jul 8, 12:31 AM CDT	Mesoscale Discussion	SPC	59 min
Jul 9, 3:25 AM CDT	Severe Thunderstorm Warning	OUN	50 min
Jul 9, 3:38 AM CDT	Mesoscale Discussion	SPC	97 min
Jul 9, 3:59 AM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 9, 4:09 AM CDT	Areal Flood Advisory	OUN	3 hr
Jul 9, 4:10 AM CDT	Severe Thunderstorm Warning	OUN	50 min
Jul 9, 4:57 AM CDT	Areal Flood Advisory	OUN	3 hr
Jul 9, 5:00 AM CDT	Severe Thunderstorm Warning	OUN	60 min
Jul 9, 5:48 AM CDT	Severe Thunderstorm Warning	OUN	42 min
Jul 9, 5:51 AM CDT	Flash Flood Warning	OUN	3 hr
Jul 9, 12:29 PM CDT	River Flood Warning	OUN	2 hr
Jul 9, 2:31 PM CDT	River Flood Advisory	OUN	7 hr
Jul 10, 12:30 PM CDT	Flood Watch	OUN	21 hr
Jul 11, 12:40 AM CDT	Mesoscale Discussion	SPC	95 min
Jul 11, 2:37 AM CDT	Severe Thunderstorm Warning	OUN	53 min
Jul 11, 2:42 AM CDT	Areal Flood Advisory	OUN	3 hr
Jul 11, 2:46 AM CDT	Severe Thunderstorm Warning	OUN	23 min
Jul 11, 3:11 AM CDT	Flash Flood Warning	OUN	6 hr
Jul 11, 6:14 AM CDT	River Flood Advisory	OUN	3 hr
Jul 11, 9:06 AM CDT	River Flood Warning	OUN	11 hr
Jul 11, 2:10 PM CDT	Heat Advisory	OUN	13 hr
Jul 12, 3:07 AM CDT	Excessive Heat Warning	OUN	18 hr
Jul 12, 3:07 AM CDT	Excessive Heat Warning	OUN	42 hr
Jul 13, 2:37 PM CDT	Heat Advisory	OUN	30 hr
Jul 13, 9:37 PM CDT	Mesoscale Discussion	SPC	83 min
Jul 14, 12:05 AM CDT	Areal Flood Advisory	OUN	3 hr
Jul 14, 12:25 AM CDT	Special Weather Statement	OUN	35 min
Jul 14, 12:04 PM CDT	Flood Watch	OUN	16 hr
Jul 14, 2:07 PM CDT	River Flood Advisory	OUN	21 hr
Jul 14, 4:58 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 14, 8:28 PM CDT	Mesoscale Discussion	SPC	92 min
Jul 16, 1:56 PM CDT	Heat Advisory	OUN	3 days
Jul 18, 9:57 AM CDT	Excessive Heat Warning	OUN	34 hr
Jul 19, 2:58 PM CDT	Heat Advisory	OUN	29 hr
Jul 24, 2:15 AM CDT	Heat Advisory	OUN	42 hr
Jul 25, 1:32 PM CDT	Heat Advisory	OUN	30 hr
Jul 26, 1:13 PM CDT	Heat Advisory	OUN	31 hr
Jul 30, 3:05 AM CDT	Heat Advisory	OUN	41 hr
Jul 31, 3:50 AM CDT	Heat Advisory	OUN	40 hr
Aug 1, 4:19 AM CDT	Heat Advisory	OUN	41 hr
Aug 1, 3:08 PM CDT	Excessive Heat Warning	OUN	30 hr
Aug 1, 3:08 PM CDT	Heat Advisory	OUN	54 hr
Aug 2, 2:59 PM CDT	Excessive Heat Warning	OUN	30 hr
Aug 2, 2:59 PM CDT	Heat Advisory	OUN	54 hr
Aug 3, 2:53 PM CDT	Excessive Heat Warning	OUN	30 hr
Aug 3, 2:53 PM CDT	Heat Advisory	OUN	44 hr
Aug 4, 2:44 AM CDT	Excessive Heat Warning	OUN	42 hr
Aug 6, 2:42 AM CDT	Mesoscale Discussion	SPC	2 hr
Aug 6, 3:44 AM CDT	Special Weather Statement	OUN	31 min
Aug 8, 12:55 AM CDT	Special Weather Statement	OUN	35 min
Aug 8, 1:07 AM CDT	Mesoscale Discussion	SPC	113 min
Aug 8, 1:10 AM CDT	Special Weather Statement	OUN	35 min
Aug 8, 1:27 AM CDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 8, 1:50 AM CDT	Special Weather Statement	OUN	25 min
Aug 8, 3:28 AM CDT	Mesoscale Discussion	SPC	92 min
Aug 8, 4:46 AM CDT	Special Weather Statement	OUN	29 min
Aug 10, 1:46 PM CDT	Excessive Heat Warning	OUN	31 hr
Aug 10, 1:46 PM CDT	Heat Advisory	OUN	31 hr
Aug 11, 12:11 AM CDT	Special Weather Statement	OUN	34 min
Aug 11, 12:47 AM CDT	Special Weather Statement	OUN	28 min
Aug 11, 12:49 AM CDT	Severe Thunderstorm Warning	OUN	21 min
Aug 11, 2:20 AM CDT	Mesoscale Discussion	SPC	115 min
Aug 11, 2:04 PM CDT	Excessive Heat Warning	OUN	31 hr
Aug 11, 2:04 PM CDT	Heat Advisory	OUN	29 hr
Aug 12, 2:29 PM CDT	Excessive Heat Warning	OUN	31 hr
Aug 12, 2:29 PM CDT	Heat Advisory	OUN	31 hr
Aug 16, 4:37 PM CDT	Heat Advisory	OUN	28 hr
Aug 17, 4:33 PM CDT	Heat Advisory	OUN	28 hr
Aug 18, 3:08 AM CDT	Heat Advisory	OUN	42 hr
Aug 18, 3:04 PM CDT	Excessive Heat Warning	OUN	30 hr
Aug 19, 2:41 AM CDT	Excessive Heat Warning	OUN	42 hr
Aug 19, 2:41 AM CDT	Heat Advisory	OUN	42 hr
Aug 20, 2:08 AM CDT	Excessive Heat Warning	OUN	43 hr
Aug 21, 3:02 AM CDT	Excessive Heat Warning	OUN	42 hr
Aug 22, 2:53 AM CDT	Excessive Heat Warning	OUN	42 hr
Aug 23, 2:16 AM CDT	Heat Advisory	OUN	43 hr
Aug 24, 2:19 AM CDT	Heat Advisory	OUN	43 hr
Aug 25, 2:06 PM CDT	Heat Advisory	OUN	30 hr
Sep 4, 3:08 PM CDT	Heat Advisory	OUN	28 hr
Sep 5, 4:04 PM CDT	Mesoscale Discussion	SPC	2 hr
Sep 5, 4:58 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Sep 5, 8:11 PM CDT	Severe Thunderstorm Warning	OUN	25 min
Sep 19, 10:14 AM CDT	Special Weather Statement	OUN	31 min
Sep 19, 4:43 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Sep 19, 8:27 PM CDT	Mesoscale Discussion	SPC	93 min
Sep 19, 9:15 PM CDT	Severe Thunderstorm Warning	OUN	45 min
Sep 19, 9:52 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	36 min
Sep 23, 4:03 PM CDT	Severe Thunderstorm Watch	SPC	10 hr
Sep 23, 6:06 PM CDT	Severe Thunderstorm Warning	OUN	39 min
Sep 23, 6:24 PM CDT	Severe Thunderstorm Warning	OUN	51 min
Sep 23, 6:27 PM CDT	Severe Thunderstorm Warning	OUN	48 min
Sep 23, 6:38 PM CDT	Mesoscale Discussion	SPC	2 hr
Sep 23, 7:08 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	52 min
Sep 23, 7:48 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	57 min
Sep 23, 9:44 PM CDT	Mesoscale Discussion	SPC	91 min
Sep 23, 10:12 PM CDT	Severe Thunderstorm Warning	OUN	48 min
Sep 23, 10:54 PM CDT	Severe Thunderstorm Warning Destructive damage threat	OUN	51 min
Sep 23, 11:00 PM CDT	Tornado Warning	OUN	30 min
Sep 23, 11:32 PM CDT	Severe Thunderstorm Warning Destructive damage threat	OUN	58 min
Sep 23, 11:45 PM CDT	Severe Thunderstorm Warning	OUN	45 min
Sep 24, 12:24 AM CDT	Areal Flood Advisory	OUN	3 hr
Oct 4, 1:34 PM CDT	Special Weather Statement	OUN	26 min
Oct 4, 2:21 PM CDT	Special Weather Statement	OUN	24 min
Oct 4, 2:45 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Oct 4, 5:00 PM CDT	Flash Flood Warning	OUN	6 hr
Oct 4, 5:21 PM CDT	Mesoscale Discussion	SPC	84 min
Oct 4, 6:45 PM CDT	Areal Flood Advisory	OUN	5 hr
Oct 23, 1:10 PM CDT	Flood Watch	OUN	65 hr
Oct 25, 5:40 PM CDT	Special Weather Statement	OUN	35 min
Oct 25, 6:29 PM CDT	Special Weather Statement	OUN	31 min
Oct 29, 4:34 AM CDT	Freeze Warning	OUN	28 hr
Oct 30, 3:52 AM CDT	Freeze Warning	OUN	29 hr
Nov 16, 2:04 AM CST	Dense Fog Advisory	OUN	9 hr
Nov 19, 11:16 PM CST	Special Weather Statement	OUN	29 min
Nov 20, 12:28 AM CST	Mesoscale Discussion	SPC	2 hr
Dec 3, 3:17 AM CST	Dense Fog Advisory	OUN	7 hr
Dec 7, 3:05 AM CST	Wind Advisory	OUN	15 hr
Dec 22, 12:08 AM CST	Dense Fog Advisory	OUN	12 hr
Dec 22, 6:56 PM CST	Dense Fog Advisory	OUN	16 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	39
Tornado Warning	8
Severe Thunderstorm Watch	15
Tornado Watch	5
Mesoscale Discussion	35
Special Weather Statement	25
Flooding
Flash Flood Warning	4
River Flood Warning	3
Flood Watch	5
Areal Flood Advisory	11
River Flood Advisory	5
Winter
Winter Storm Warning	2
Winter Storm Watch	1
Winter Weather Advisory	3
Heat
Excessive Heat Warning	16
Heat Advisory	30
Cold
Freeze Warning	2
Wind and dust
High Wind Warning	1
Wind Advisory	6
Fog and smoke
Dense Fog Advisory	8

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.