Alert archive / Oklahoma / Harper County

Weather alerts in Harper County, Oklahoma, 2025

256 weather alerts in 2025, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Harper County and its neighbors

Each county as a circle sized by its count in 2025. Tap one for its archive.

Alerts
256
Warnings
78
Watches
36
Advisories
52
Busiest month
April42 alerts
Busiest day
April 24, 202516 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 7 tornado warnings covering Harper County in 2025 had a tornado report inside them; 1 of 1 tornado reports fell inside a warning, on average 23 minutes after it went out.

Harper County, 2025

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings7271%1100%23 min
Severe thunderstorm warnings511767%1493%27 min
Flash flood warnings20100%0

Each office's whole area, 2025

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Norman, OK: tornado warnings1842288%2681%19 min
NWS Norman, OK: severe thunderstorm warnings1,15937268%96581%22 min
NWS Norman, OK: flash flood warnings1643877%8674%102 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.

IssuedProductOfficeLasted
Jan 4, 1:52 AM CSTWind AdvisoryOUN40 hr
Jan 4, 1:30 PM CSTWinter Weather AdvisoryOUN26 hr
Jan 4, 6:09 PM CSTDense Fog AdvisoryOUN5 hr
Jan 5, 12:58 PM CSTCold Weather AdvisoryOUN20 hr
Jan 8, 12:10 PM CSTWinter Storm WarningOUN38 hr
Jan 8, 12:10 PM CSTWinter Weather AdvisoryOUN48 hr
Jan 19, 1:20 AM CSTCold Weather AdvisoryOUN56 hr
Jan 19, 1:50 PM CSTWinter Weather AdvisoryOUN28 hr
Jan 21, 2:22 AM CSTExtreme Cold WarningOUN7 hr
Jan 29, 6:22 PM CSTDense Fog AdvisoryOUN17 hr
Feb 5, 12:14 AM CSTWinter Weather AdvisoryOUN11 hr
Feb 5, 7:31 PM CSTDense Fog AdvisoryOUN14 hr
Feb 7, 7:57 PM CSTDense Fog AdvisoryOUN12 hr
Feb 10, 1:48 PM CSTWinter Weather AdvisoryOUN46 hr
Feb 12, 12:45 PM CSTCold Weather AdvisoryOUN20 hr
Feb 14, 2:48 AM CSTWind AdvisoryOUN15 hr
Feb 16, 2:49 AM CSTExtreme Cold WatchOUN34 hr
Feb 17, 9:14 AM CSTWinter Weather AdvisoryOUN39 hr
Feb 17, 12:24 PM CSTExtreme Cold WarningOUN69 hr
Feb 20, 11:58 AM CSTCold Weather AdvisoryOUN21 hr
Mar 3, 2:30 AM CSTHigh Wind WatchOUN23 hr
Mar 3, 2:30 AM CSTWind AdvisoryOUN55 hr
Mar 3, 9:33 PM CSTTornado WatchSPC7 hr
Mar 4, 1:32 AM CSTHigh Wind WarningOUN22 hr
Mar 6, 2:55 AM CSTWind AdvisoryOUN18 hr
Mar 7, 1:29 PM CSTWinter Weather AdvisoryOUN37 hr
Mar 12, 2:34 PM CDTHigh Wind WatchOUN23 hr
Mar 12, 2:38 PM CDTFire Weather WatchOUN12 hr
Mar 12, 2:38 PM CDTRed Flag WarningOUN30 hr
Mar 13, 2:15 AM CDTRed Flag WarningOUN44 hr
Mar 13, 1:51 PM CDTHigh Wind WarningOUN30 hr
Mar 14, 1:12 PM CDTBlowing Dust AdvisoryOUN8 hr
Mar 15, 2:05 AM CDTRed Flag WarningOUN19 hr
Mar 15, 2:33 PM CDTFire Weather WatchOUN22 hr
Mar 15, 2:33 PM CDTFire Weather WatchOUN47 hr
Mar 16, 12:35 PM CDTRed Flag WarningOUN33 hr
Mar 17, 2:39 AM CDTRed Flag WarningOUN64 hr
Mar 18, 3:02 AM CDTHigh Wind WatchOUN10 hr
Mar 18, 1:22 PM CDTHigh Wind WarningOUN30 hr
Mar 23, 1:41 AM CDTWind AdvisoryOUN10 hr
Mar 28, 1:13 PM CDTRed Flag WarningOUN31 hr
Mar 31, 3:04 AM CDTFire Weather WatchOUN12 hr
Mar 31, 2:36 PM CDTRed Flag WarningOUN29 hr
Apr 1, 1:52 AM CDTWind AdvisoryOUN23 hr
Apr 2, 1:33 AM CDTSpecial Weather StatementOUN57 min
Apr 5, 1:37 AM CDTWind AdvisoryOUN17 hr
Apr 5, 2:44 PM CDTFreeze WatchOUN22 hr
Apr 6, 12:44 PM CDTFreeze WarningOUN19 hr
Apr 15, 2:02 PM CDTFire Weather WatchOUN22 hr
Apr 16, 12:22 PM CDTRed Flag WarningOUN33 hr
Apr 17, 3:42 AM CDTWind AdvisoryOUN16 hr
Apr 21, 5:51 AM CDTDense Fog AdvisoryOUN3 hr
Apr 22, 3:25 PM CDTMesoscale DiscussionSPC2 hr
Apr 22, 5:35 PM CDTSevere Thunderstorm WatchSPC9 hr
Apr 22, 6:43 PM CDTSpecial Weather StatementOUN32 min
Apr 22, 7:31 PM CDTSpecial Weather StatementOUN29 min
Apr 23, 5:30 PM CDTSevere Thunderstorm WatchSPC9 hr
Apr 24, 3:49 PM CDTSpecial Weather StatementOUN26 min
Apr 24, 3:58 PM CDTSpecial Weather StatementOUN17 min
Apr 24, 4:03 PM CDTSevere Thunderstorm WarningOUN42 min
Apr 24, 4:45 PM CDTSevere Thunderstorm Warning Considerable damage threatOUN45 min
Apr 24, 4:55 PM CDTSevere Thunderstorm WatchSPC7 hr
Apr 24, 4:58 PM CDTTornado WarningOUN32 min
Apr 24, 5:11 PM CDTMesoscale DiscussionSPC94 min
Apr 24, 5:25 PM CDTTornado WarningOUN32 min
Apr 24, 5:26 PM CDTFlash Flood WarningOUN4 hr
Apr 24, 5:41 PM CDTSpecial Weather StatementOUN34 min
Apr 24, 5:48 PM CDTSevere Thunderstorm WarningOUN42 min
Apr 24, 5:56 PM CDTSevere Thunderstorm WarningOUN49 min
Apr 24, 6:15 PM CDTTornado WarningOUN45 min
Apr 24, 6:42 PM CDTAreal Flood AdvisoryOUN4 hr
Apr 24, 6:44 PM CDTSevere Thunderstorm Warning Considerable damage threatOUN46 min
Apr 24, 6:44 PM CDTSevere Thunderstorm Warning Considerable damage threatOUN46 min
Apr 24, 7:05 PM CDTSevere Thunderstorm WarningOUN25 min
Apr 24, 7:07 PM CDTMesoscale DiscussionSPC83 min
Apr 24, 7:35 PM CDTSpecial Weather StatementOUN25 min
Apr 24, 7:50 PM CDTSevere Thunderstorm WarningOUN40 min
Apr 24, 7:59 PM CDTSpecial Weather StatementOUN31 min
Apr 24, 8:24 PM CDTSevere Thunderstorm WarningOUN51 min
Apr 24, 8:34 PM CDTSevere Thunderstorm WarningOUN41 min
Apr 24, 9:09 PM CDTSevere Thunderstorm WarningOUN51 min
Apr 24, 9:27 PM CDTTornado WarningOUN33 min
Apr 29, 12:50 AM CDTMesoscale DiscussionSPC115 min
Apr 29, 2:37 AM CDTSevere Thunderstorm WatchSPC7 hr
Apr 29, 6:35 PM CDTSpecial Weather StatementOUN25 min
Apr 30, 9:29 PM CDTSpecial Weather StatementOUN31 min
Apr 30, 9:57 PM CDTSpecial Weather StatementOUN33 min
May 5, 1:41 AM CDTFlood WatchOUN39 hr
May 18, 3:21 PM CDTMesoscale DiscussionSPC114 min
May 18, 3:38 PM CDTTornado WatchSPC8 hr
May 18, 4:53 PM CDTSevere Thunderstorm WarningOUN52 min
May 18, 5:11 PM CDTMesoscale DiscussionSPC94 min
May 18, 5:36 PM CDTSevere Thunderstorm Warning Considerable damage threatOUN24 min
May 18, 7:01 PM CDTSevere Thunderstorm WarningOUN44 min
May 18, 7:06 PM CDTSevere Thunderstorm Warning Destructive damage threatOUN39 min
May 18, 7:16 PM CDTMesoscale DiscussionSPC119 min
May 18, 7:31 PM CDTSevere Thunderstorm WarningOUN44 min
May 19, 7:42 PM CDTSpecial Weather StatementOUN33 min
May 24, 11:52 PM CDTSevere Thunderstorm WatchSPC9 hr
May 28, 2:07 PM CDTSpecial Weather StatementOUN23 min
May 28, 3:15 PM CDTSpecial Weather StatementOUN30 min
May 28, 5:22 PM CDTMesoscale DiscussionSPC113 min
May 28, 5:53 PM CDTSevere Thunderstorm WatchSPC7 hr
May 28, 7:04 PM CDTMesoscale DiscussionSPC86 min
May 28, 7:38 PM CDTSevere Thunderstorm Warning Considerable damage threatOUN52 min
May 28, 8:27 PM CDTSpecial Weather StatementOUN33 min
May 28, 9:26 PM CDTSpecial Weather StatementOUN34 min
May 28, 9:52 PM CDTSevere Thunderstorm WarningOUN38 min
May 28, 10:28 PM CDTSpecial Weather StatementOUN32 min
Jun 2, 5:00 PM CDTMesoscale DiscussionSPC90 min
Jun 2, 5:51 PM CDTSevere Thunderstorm WatchSPC7 hr
Jun 2, 6:02 PM CDTSpecial Weather StatementOUN43 min
Jun 2, 6:45 PM CDTSpecial Weather StatementOUN30 min
Jun 5, 3:19 AM CDTFlood WatchOUN58 hr
Jun 6, 12:18 AM CDTSevere Thunderstorm WarningOUN57 min
Jun 6, 12:33 AM CDTMesoscale DiscussionSPC57 min
Jun 6, 12:54 AM CDTSevere Thunderstorm WatchSPC7 hr
Jun 6, 1:13 AM CDTSevere Thunderstorm WarningOUN62 min
Jun 6, 1:42 AM CDTAreal Flood AdvisoryOUN3 hr
Jun 6, 3:18 AM CDTAreal Flood AdvisoryOUN3 hr
Jun 6, 9:00 AM CDTRiver Flood AdvisoryOUN64 hr
Jun 6, 9:16 PM CDTMesoscale DiscussionSPC89 min
Jun 6, 10:08 PM CDTTornado WatchSPC8 hr
Jun 6, 11:41 PM CDTMesoscale DiscussionSPC94 min
Jun 7, 12:00 AM CDTSevere Thunderstorm WarningOUN45 min
Jun 7, 12:42 AM CDTSevere Thunderstorm Warning Destructive damage threatOUN48 min
Jun 8, 2:04 PM CDTSevere Thunderstorm WatchSPC7 hr
Jun 15, 5:25 AM CDTSpecial Weather StatementOUN50 min
Jun 17, 11:58 AM CDTFlood WatchOUN22 hr
Jun 17, 1:27 PM CDTMesoscale DiscussionSPC2 hr
Jun 17, 3:40 PM CDTTornado WatchSPC6 hr
Jun 17, 8:13 PM CDTMesoscale DiscussionSPC2 hr
Jun 17, 11:27 PM CDTAreal Flood AdvisoryOUN2 hr
Jun 18, 12:07 AM CDTSpecial Weather StatementOUN53 min
Jun 22, 10:33 AM CDTWind AdvisoryOUN8 hr
Jun 23, 4:45 PM CDTMesoscale DiscussionSPC2 hr
Jun 29, 12:41 AM CDTSpecial Weather StatementOUN49 min
Jul 5, 5:29 PM CDTMesoscale DiscussionSPC61 min
Jul 6, 4:54 PM CDTMesoscale DiscussionSPC2 hr
Jul 6, 10:23 PM CDTAreal Flood AdvisoryOUN3 hr
Jul 6, 10:35 PM CDTSpecial Weather StatementOUN40 min
Jul 6, 11:23 PM CDTAreal Flood AdvisoryOUN3 hr
Jul 8, 1:19 PM CDTMesoscale DiscussionSPC2 hr
Jul 8, 8:59 PM CDTSevere Thunderstorm WarningOUN29 min
Jul 8, 9:29 PM CDTSpecial Weather StatementOUN31 min
Jul 11, 3:16 PM CDTMesoscale DiscussionSPC119 min
Jul 11, 5:27 PM CDTSpecial Weather StatementOUN33 min
Jul 12, 2:57 AM CDTSpecial Weather StatementOUN33 min
Jul 12, 3:27 AM CDTSpecial Weather StatementOUN33 min
Jul 19, 12:45 PM CDTHeat AdvisoryOUN30 hr
Jul 20, 12:10 PM CDTHeat AdvisoryOUN31 hr
Jul 21, 5:10 PM CDTSpecial Weather StatementOUN50 min
Jul 21, 5:26 PM CDTSevere Thunderstorm WarningOUN34 min
Jul 21, 5:59 PM CDTSpecial Weather StatementOUN46 min
Jul 21, 6:10 PM CDTSevere Thunderstorm WarningOUN35 min
Jul 21, 6:32 PM CDTSevere Thunderstorm WarningOUN43 min
Jul 21, 7:10 PM CDTSpecial Weather StatementOUN35 min
Jul 23, 4:03 PM CDTSpecial Weather StatementOUN27 min
Jul 23, 4:39 PM CDTSpecial Weather StatementOUN36 min
Jul 23, 7:01 PM CDTSpecial Weather StatementOUN29 min
Jul 24, 5:16 PM CDTAreal Flood AdvisoryOUN3 hr
Jul 24, 6:38 PM CDTSpecial Weather StatementOUN37 min
Aug 2, 11:03 PM CDTMesoscale DiscussionSPC87 min
Aug 2, 11:36 PM CDTSevere Thunderstorm WatchSPC6 hr
Aug 3, 1:38 AM CDTSpecial Weather StatementOUN22 min
Aug 3, 2:13 AM CDTSpecial Weather StatementOUN32 min
Aug 3, 6:21 PM CDTMesoscale DiscussionSPC84 min
Aug 3, 7:54 PM CDTSevere Thunderstorm WatchSPC6 hr
Aug 3, 8:06 PM CDTSevere Thunderstorm Warning Destructive damage threatOUN39 min
Aug 3, 8:38 PM CDTSevere Thunderstorm Warning Considerable damage threatOUN52 min
Aug 3, 9:19 PM CDTSevere Thunderstorm WarningOUN41 min
Aug 3, 9:29 PM CDTMesoscale DiscussionSPC91 min
Aug 6, 11:54 AM CDTHeat AdvisoryOUN32 hr
Aug 7, 12:55 AM CDTHeat AdvisoryOUN43 hr
Aug 10, 11:06 AM CDTFlood WatchOUN20 hr
Aug 10, 11:08 PM CDTMesoscale DiscussionSPC97 min
Aug 10, 11:31 PM CDTSevere Thunderstorm WatchSPC6 hr
Aug 11, 12:33 AM CDTSevere Thunderstorm Warning Considerable damage threatOUN42 min
Aug 11, 1:10 AM CDTSevere Thunderstorm WarningOUN50 min
Aug 17, 5:24 PM CDTSpecial Weather StatementOUN36 min
Aug 17, 6:19 PM CDTSpecial Weather StatementOUN26 min
Aug 17, 6:46 PM CDTSpecial Weather StatementOUN29 min
Aug 17, 7:05 PM CDTSevere Thunderstorm Warning Considerable damage threatOUN25 min
Aug 17, 7:29 PM CDTSevere Thunderstorm WarningOUN46 min
Aug 17, 8:40 PM CDTSpecial Weather StatementOUN35 min
Aug 17, 9:01 PM CDTSevere Thunderstorm WarningOUN29 min
Aug 18, 3:28 PM CDTSpecial Weather StatementOUN32 min
Aug 18, 3:45 PM CDTSevere Thunderstorm Warning Considerable damage threatOUN45 min
Aug 18, 4:31 PM CDTSpecial Weather StatementOUN29 min
Aug 18, 5:03 PM CDTSpecial Weather StatementOUN27 min
Aug 18, 5:18 PM CDTSevere Thunderstorm Warning Considerable damage threatOUN42 min
Aug 18, 5:48 PM CDTSevere Thunderstorm Warning Considerable damage threatOUN42 min
Aug 18, 5:56 PM CDTAreal Flood AdvisoryOUN3 hr
Aug 24, 4:56 PM CDTSpecial Weather StatementOUN49 min
Aug 25, 12:01 AM CDTFlood WatchOUN36 hr
Aug 27, 11:34 PM CDTFlood WatchOUN12 hr
Aug 27, 11:38 PM CDTSpecial Weather StatementOUN37 min
Aug 28, 1:18 AM CDTSpecial Weather StatementOUN27 min
Aug 28, 1:36 AM CDTSevere Thunderstorm WarningOUN39 min
Aug 28, 2:19 AM CDTAreal Flood AdvisoryOUN3 hr
Aug 28, 6:21 AM CDTAreal Flood AdvisoryOUN3 hr
Aug 31, 7:30 AM CDTDense Fog AdvisoryOUN116 min
Sep 1, 2:01 PM CDTMesoscale DiscussionSPC2 hr
Sep 1, 3:11 PM CDTSpecial Weather StatementOUN34 min
Sep 1, 3:41 PM CDTSevere Thunderstorm WarningOUN49 min
Sep 1, 3:47 PM CDTSevere Thunderstorm WarningOUN43 min
Sep 1, 4:25 PM CDTSpecial Weather StatementOUN50 min
Sep 4, 10:51 PM CDTSpecial Weather StatementOUN24 min
Sep 4, 11:18 PM CDTSpecial Weather StatementOUN27 min
Sep 8, 7:51 AM CDTSpecial Weather StatementOUN24 min
Sep 8, 3:53 PM CDTMesoscale DiscussionSPC2 hr
Sep 8, 4:54 PM CDTSevere Thunderstorm WatchSPC8 hr
Sep 8, 5:09 PM CDTSevere Thunderstorm Warning Considerable damage threatOUN51 min
Sep 8, 5:34 PM CDTTornado WarningOUN41 min
Sep 8, 5:57 PM CDTSevere Thunderstorm Warning Considerable damage threatOUN48 min
Sep 8, 6:12 PM CDTTornado WarningOUN48 min
Sep 8, 6:17 PM CDTAreal Flood AdvisoryOUN3 hr
Sep 8, 6:45 PM CDTSevere Thunderstorm Warning Destructive damage threatOUN45 min
Sep 8, 6:55 PM CDTTornado WarningOUN50 min
Sep 8, 6:59 PM CDTFlash Flood WarningOUN3 hr
Sep 8, 7:08 PM CDTSevere Thunderstorm Warning Considerable damage threatOUN22 min
Sep 8, 7:28 PM CDTSevere Thunderstorm Warning Considerable damage threatOUN47 min
Sep 8, 7:31 PM CDTMesoscale DiscussionSPC3 hr
Sep 8, 8:12 PM CDTSevere Thunderstorm Warning Considerable damage threatOUN48 min
Sep 10, 3:37 AM CDTSpecial Weather StatementOUN38 min
Sep 14, 1:21 PM CDTMesoscale DiscussionSPC2 hr
Sep 14, 4:05 PM CDTSpecial Weather StatementOUN25 min
Sep 14, 4:27 PM CDTSpecial Weather StatementOUN33 min
Sep 14, 4:33 PM CDTSevere Thunderstorm WarningOUN29 min
Sep 14, 4:53 PM CDTSpecial Weather StatementOUN37 min
Sep 14, 5:50 PM CDTSpecial Weather StatementOUN25 min
Sep 15, 2:35 PM CDTSevere Thunderstorm WarningOUN17 min
Sep 15, 3:10 PM CDTSpecial Weather StatementOUN35 min
Sep 17, 5:02 PM CDTSevere Thunderstorm WarningOUN28 min
Sep 17, 5:29 PM CDTSevere Thunderstorm WarningOUN31 min
Sep 17, 5:55 PM CDTSevere Thunderstorm WarningOUN50 min
Sep 17, 6:03 PM CDTSpecial Weather StatementOUN27 min
Sep 20, 2:39 PM CDTMesoscale DiscussionSPC3 hr
Sep 22, 6:31 AM CDTDense Fog AdvisoryOUN4 hr
Sep 22, 7:18 PM CDTMesoscale DiscussionSPC117 min
Sep 22, 8:23 PM CDTSevere Thunderstorm WatchSPC7 hr
Sep 22, 11:07 PM CDTMesoscale DiscussionSPC113 min
Sep 22, 11:28 PM CDTSpecial Weather StatementOUN32 min
Oct 13, 11:46 PM CDTDense Fog AdvisoryOUN9 hr
Oct 28, 12:01 PM CDTWind AdvisoryOUN28 hr
Oct 28, 12:11 PM CDTFreeze WatchOUN23 hr
Oct 29, 11:09 AM CDTFreeze WarningOUN21 hr
Nov 7, 10:48 AM CSTFreeze WatchOUN24 hr
Nov 8, 10:56 AM CSTFreeze WarningOUN46 hr
Nov 28, 12:03 PM CSTWind AdvisoryOUN30 hr
Dec 5, 7:55 AM CSTDense Fog AdvisoryOUN3 hr
Dec 8, 7:14 AM CSTFreezing Fog AdvisoryOUN3 hr
Dec 18, 4:30 AM CSTWind AdvisoryOUN14 hr
Dec 18, 9:26 AM CSTRed Flag WarningOUN9 hr
Dec 23, 4:35 PM CSTDense Fog AdvisoryOUN17 hr
Dec 27, 11:33 AM CSTWind AdvisoryOUN31 hr

By product

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

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force nowTornadoes on recordForecastThe radar archive20242026

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.