Alert archive / Oklahoma / Stephens County

Weather alerts in Stephens County, Oklahoma, 2012

177 weather alerts in 2012, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Stephens County and its neighbors

Each county as a circle sized by its count in 2012. Tap one for its archive.

Alerts
177
Warnings
38
Watches
28
Advisories
31
Busiest month
May35 alerts
Busiest day
February 3, 20129 alerts

Over time

By month

Warning verification

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

Stephens County, 2012

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings241442%1486%15 min
Flash flood warnings00

Each office's whole area, 2012

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Norman, OK: tornado warnings542259%4384%18 min
NWS Norman, OK: severe thunderstorm warnings52327048%64481%25 min
NWS Norman, OK: flash flood warnings9544%7100%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.

IssuedProductOfficeLasted
Jan 10, 3:32 PM CSTWind AdvisoryOUN31 hr
Jan 21, 2:52 PM CSTRed Flag WarningOUN27 hr
Jan 21, 3:01 PM CSTWind AdvisoryOUN28 hr
Feb 2, 7:38 PM CSTSevere Thunderstorm WatchSPC7 hr
Feb 3, 2:25 AM CSTTornado WatchSPC8 hr
Feb 3, 7:15 AM CSTMesoscale DiscussionSPC90 min
Feb 3, 11:59 AM CSTMesoscale DiscussionSPC91 min
Feb 3, 12:26 PM CSTTornado WatchSPC8 hr
Feb 3, 2:57 PM CSTSpecial Weather StatementOUN18 min
Feb 3, 3:13 PM CSTSpecial Weather StatementOUN17 min
Feb 3, 3:34 PM CSTSpecial Weather StatementOUN26 min
Feb 3, 3:35 PM CSTSevere Thunderstorm WarningOUN55 min
Feb 12, 4:21 AM CSTWinter Weather AdvisoryOUN30 hr
Feb 13, 9:40 PM CSTDense Fog AdvisoryOUN3 hr
Feb 14, 12:25 AM CSTFreezing Fog AdvisoryOUN9 hr
Feb 14, 4:20 AM CSTDense Fog AdvisoryOUN8 hr
Feb 14, 3:47 PM CSTDense Fog AdvisoryOUN20 hr
Feb 19, 2:46 PM CSTWind AdvisoryOUN28 hr
Feb 20, 1:39 PM CSTMesoscale DiscussionSPC66 min
Feb 20, 3:35 PM CSTSpecial Weather StatementOUN25 min
Feb 21, 1:43 PM CSTRed Flag WarningOUN4 hr
Feb 23, 5:45 AM CSTRed Flag WarningOUN10 hr
Feb 28, 9:47 PM CSTMesoscale DiscussionSPC58 min
Feb 29, 4:14 AM CSTFire Weather WatchOUN23 hr
Mar 1, 3:09 AM CSTRed Flag WarningOUN15 hr
Mar 5, 9:58 PM CSTWind AdvisoryOUN21 hr
Mar 8, 5:07 AM CSTWind AdvisoryOUN12 hr
Mar 8, 7:37 AM CSTSpecial Weather StatementOUN23 min
Mar 8, 7:52 AM CSTSevere Thunderstorm WarningOUN38 min
Mar 8, 2:54 PM CSTMesoscale DiscussionSPC66 min
Mar 19, 1:56 AM CDTSevere Thunderstorm WatchSPC4 hr
Mar 19, 3:09 AM CDTFlash Flood WatchOUN32 hr
Mar 19, 9:42 AM CDTSevere Thunderstorm WarningOUN48 min
Mar 19, 10:05 AM CDTMesoscale DiscussionSPC115 min
Mar 19, 1:05 PM CDTAreal Flood AdvisoryOUN3 hr
Mar 19, 2:32 PM CDTSpecial Weather StatementOUN28 min
Mar 21, 12:39 PM CDTMesoscale DiscussionSPC2 hr
Mar 21, 2:14 PM CDTSevere Thunderstorm WarningOUN33 min
Mar 29, 6:24 AM CDTDense Fog AdvisoryOUN4 hr
Mar 31, 5:33 AM CDTDense Fog AdvisoryOUN4 hr
Apr 2, 9:12 PM CDTMesoscale DiscussionSPC63 min
Apr 2, 10:51 PM CDTSevere Thunderstorm WatchSPC5 hr
Apr 2, 11:19 PM CDTSpecial Weather StatementOUN26 min
Apr 2, 11:30 PM CDTSevere Thunderstorm WarningOUN60 min
Apr 3, 1:14 AM CDTMesoscale DiscussionSPC2 hr
Apr 3, 3:32 AM CDTMesoscale DiscussionSPC88 min
Apr 3, 6:23 AM CDTSpecial Weather StatementOUN37 min
Apr 3, 8:36 AM CDTMesoscale DiscussionSPC84 min
Apr 7, 10:17 AM CDTMesoscale DiscussionSPC88 min
Apr 7, 2:29 PM CDTMesoscale DiscussionSPC61 min
Apr 8, 1:58 AM CDTSpecial Weather StatementOUN32 min
Apr 9, 2:36 AM CDTDense Fog AdvisoryOUN7 hr
Apr 10, 8:01 AM CDTDense Fog AdvisoryOUN119 min
Apr 13, 12:10 PM CDTMesoscale DiscussionSPC2 hr
Apr 13, 1:28 PM CDTTornado WatchSPC8 hr
Apr 13, 3:39 PM CDTMesoscale DiscussionSPC96 min
Apr 14, 1:48 AM CDTWind AdvisoryOUN26 hr
Apr 14, 1:23 PM CDTMesoscale DiscussionSPC2 hr
Apr 15, 2:44 AM CDTSevere Thunderstorm WarningOUN45 min
Apr 15, 3:40 AM CDTSpecial Weather StatementOUN65 min
Apr 19, 6:10 PM CDTMesoscale DiscussionSPC2 hr
Apr 19, 6:38 PM CDTSevere Thunderstorm WatchSPC6 hr
Apr 19, 8:26 PM CDTSevere Thunderstorm WarningOUN27 min
Apr 19, 9:13 PM CDTMesoscale DiscussionSPC62 min
Apr 19, 10:49 PM CDTMesoscale DiscussionSPC116 min
Apr 28, 6:33 PM CDTSevere Thunderstorm WatchSPC7 hr
Apr 28, 10:36 PM CDTTornado WatchSPC3 hr
Apr 28, 10:54 PM CDTMesoscale DiscussionSPC2 hr
Apr 30, 8:55 PM CDTMesoscale DiscussionSPC65 min
Apr 30, 9:51 PM CDTTornado WatchSPC4 hr
Apr 30, 10:33 PM CDTSevere Thunderstorm WarningOUN57 min
Apr 30, 11:28 PM CDTMesoscale DiscussionSPC92 min
Apr 30, 11:30 PM CDTSpecial Weather StatementOUN60 min
May 1, 1:19 AM CDTMesoscale DiscussionSPC56 min
May 4, 3:49 PM CDTSevere Thunderstorm WatchSPC7 hr
May 4, 5:40 PM CDTSevere Thunderstorm WarningOUN65 min
May 4, 7:28 PM CDTMesoscale DiscussionSPC62 min
May 19, 9:03 PM CDTSevere Thunderstorm WatchSPC7 hr
May 20, 1:30 AM CDTMesoscale DiscussionSPC90 min
May 20, 8:23 AM CDTSpecial Weather StatementOUN37 min
May 23, 4:06 AM CDTWind AdvisoryOUN17 hr
May 28, 2:54 PM CDTMesoscale DiscussionSPC96 min
May 28, 3:48 PM CDTSevere Thunderstorm WatchSPC8 hr
May 28, 6:14 PM CDTMesoscale DiscussionSPC91 min
May 28, 6:31 PM CDTSevere Thunderstorm WarningOUN44 min
May 28, 7:00 PM CDTSevere Thunderstorm WarningOUN45 min
May 29, 3:06 PM CDTMesoscale DiscussionSPC84 min
May 29, 3:55 PM CDTSevere Thunderstorm WatchSPC12 hr
May 29, 6:47 PM CDTMesoscale DiscussionSPC88 min
May 29, 8:21 PM CDTMesoscale DiscussionSPC54 min
May 29, 10:58 PM CDTSevere Thunderstorm WarningOUN47 min
May 29, 11:28 PM CDTMesoscale DiscussionSPC62 min
May 29, 11:46 PM CDTSevere Thunderstorm WarningOUN44 min
May 30, 12:28 AM CDTSevere Thunderstorm WarningOUN62 min
May 30, 1:31 AM CDTSpecial Weather StatementOUN29 min
May 30, 1:35 AM CDTSevere Thunderstorm WarningOUN40 min
May 30, 2:23 AM CDTSevere Thunderstorm WarningOUN67 min
May 30, 6:13 PM CDTSevere Thunderstorm WatchSPC8 hr
May 30, 7:33 PM CDTSevere Thunderstorm WarningOUN57 min
May 30, 8:53 PM CDTSevere Thunderstorm WarningOUN52 min
May 30, 10:44 PM CDTSpecial Weather StatementOUN61 min
May 30, 11:32 PM CDTSpecial Weather StatementOUN43 min
May 31, 12:10 AM CDTSpecial Weather StatementOUN35 min
Jun 3, 2:13 AM CDTSpecial Weather StatementOUN47 min
Jun 3, 3:01 AM CDTSpecial Weather StatementOUN29 min
Jun 3, 9:46 PM CDTMesoscale DiscussionSPC59 min
Jun 3, 10:06 PM CDTSevere Thunderstorm WatchSPC3 hr
Jun 6, 1:40 PM CDTMesoscale DiscussionSPC2 hr
Jun 6, 3:28 PM CDTAreal Flood AdvisoryOUN3 hr
Jun 11, 11:08 PM CDTSpecial Weather StatementOUN37 min
Jun 11, 11:42 PM CDTSpecial Weather StatementOUN33 min
Jun 12, 10:32 AM CDTMesoscale DiscussionSPC88 min
Jun 13, 4:16 AM CDTSpecial Weather StatementOUN29 min
Jun 13, 4:58 AM CDTSpecial Weather StatementOUN47 min
Jun 16, 3:02 PM CDTMesoscale DiscussionSPC88 min
Jun 17, 2:04 PM CDTMesoscale DiscussionSPC56 min
Jun 17, 5:18 PM CDTSevere Thunderstorm WarningOUN42 min
Jun 17, 6:07 PM CDTSpecial Weather StatementOUN23 min
Jun 26, 11:25 AM CDTHeat AdvisoryOUN3 days
Jul 9, 4:35 PM CDTSevere Thunderstorm WarningOUN40 min
Jul 14, 7:02 PM CDTSpecial Weather StatementOUN58 min
Jul 14, 7:31 PM CDTSevere Thunderstorm WarningOUN44 min
Jul 20, 5:09 AM CDTHeat AdvisoryOUN4 days
Jul 20, 3:45 PM CDTMesoscale DiscussionSPC3 hr
Jul 27, 3:08 PM CDTHeat AdvisoryOUN9 days
Aug 2, 4:12 AM CDTFire Weather WatchOUN24 hr
Aug 3, 4:38 AM CDTFire Weather WatchOUN10 hr
Aug 3, 4:38 AM CDTRed Flag WarningOUN17 hr
Aug 3, 2:55 PM CDTRed Flag WarningOUN31 hr
Aug 6, 3:11 PM CDTHeat AdvisoryOUN31 hr
Aug 7, 9:45 AM CDTSpecial Weather StatementOUN30 min
Aug 9, 1:43 PM CDTRed Flag WarningOUN5 hr
Aug 14, 5:42 PM CDTMesoscale DiscussionSPC63 min
Aug 14, 6:04 PM CDTSevere Thunderstorm WatchSPC5 hr
Aug 18, 2:42 PM CDTSpecial Weather StatementOUN33 min
Aug 18, 3:16 PM CDTSpecial Weather StatementOUN29 min
Sep 5, 10:58 PM CDTSpecial Weather StatementOUN32 min
Sep 7, 4:10 AM CDTWind AdvisoryOUN18 hr
Sep 7, 2:44 PM CDTMesoscale DiscussionSPC2 hr
Sep 7, 5:24 PM CDTSpecial Weather StatementOUN51 min
Sep 17, 5:17 AM CDTDense Fog AdvisoryOUN5 hr
Sep 23, 4:06 AM CDTFire Weather WatchOUN11 hr
Sep 23, 3:04 PM CDTRed Flag WarningOUN29 hr
Sep 25, 7:29 PM CDTSevere Thunderstorm WatchSPC4 hr
Sep 25, 9:33 PM CDTMesoscale DiscussionSPC87 min
Sep 25, 11:35 PM CDTSpecial Weather StatementOUN25 min
Sep 26, 4:37 AM CDTSpecial Weather StatementOUN23 min
Sep 26, 5:03 AM CDTSevere Thunderstorm WarningOUN42 min
Sep 26, 10:19 PM CDTSevere Thunderstorm WarningOUN41 min
Sep 26, 11:02 PM CDTSpecial Weather StatementOUN43 min
Sep 27, 4:31 AM CDTSpecial Weather StatementOUN29 min
Oct 7, 3:13 PM CDTFrost AdvisoryOUN18 hr
Oct 13, 1:00 PM CDTTornado WatchSPC8 hr
Oct 13, 2:55 PM CDTMesoscale DiscussionSPC95 min
Oct 13, 5:27 PM CDTSevere Thunderstorm WarningOUN63 min
Oct 13, 6:43 PM CDTSpecial Weather StatementOUN32 min
Oct 13, 6:59 PM CDTMesoscale DiscussionSPC2 hr
Oct 25, 2:31 PM CDTFreeze WatchOUN23 hr
Oct 25, 2:31 PM CDTFreeze WarningOUN43 hr
Oct 26, 1:53 PM CDTFreeze WatchOUN24 hr
Oct 27, 2:22 PM CDTFreeze WarningOUN20 hr
Nov 9, 2:33 PM CSTWind AdvisoryOUN33 hr
Nov 11, 5:36 AM CSTFreeze WarningOUN28 hr
Nov 20, 5:18 AM CSTDense Fog AdvisoryOUN5 hr
Dec 9, 1:30 AM CSTDense Fog AdvisoryOUN5 hr
Dec 14, 6:58 AM CSTFire Weather WatchOUN21 hr
Dec 15, 4:02 AM CSTRed Flag WarningOUN13 hr
Dec 19, 4:06 AM CSTWind AdvisoryOUN30 hr
Dec 23, 2:33 PM CSTWinter Storm WatchOUN21 hr
Dec 24, 3:31 AM CSTWinter Storm WarningOUN38 hr
Dec 24, 12:01 PM CSTWinter Weather AdvisoryOUN30 hr
Dec 25, 2:32 AM CSTMesoscale DiscussionSPC4 hr
Dec 25, 9:31 AM CSTMesoscale DiscussionSPC5 hr
Dec 25, 11:02 AM CSTMesoscale DiscussionSPC4 hr
Dec 25, 11:37 AM CSTBlizzard WarningOUN6 hr
Dec 25, 2:50 PM CSTMesoscale DiscussionSPC4 hr
Dec 25, 3:38 PM CSTWind Chill AdvisoryOUN17 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 archive20112013

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.