Alert archive / Oklahoma / Ottawa County

Weather alerts in Ottawa County, Oklahoma, 2019

268 weather alerts in 2019, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Ottawa County and its neighbors

Each county as a circle sized by its count in 2019. Tap one for its archive.

Alerts
268
Warnings
71
Watches
38
Advisories
67
Busiest month
May71 alerts
Busiest day
April 30, 201915 alerts

Over time

By month

Warning verification

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

7 of 12 tornado warnings covering Ottawa County in 2019 had a tornado report inside them; 3 of 3 tornado reports fell inside a warning, on average 15 minutes after it went out.

Ottawa County, 2019

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings12742%3100%15 min
Severe thunderstorm warnings241154%850%25 min
Flash flood warnings8538%2100%309 min

Each office's whole area, 2019

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Tulsa, OK: tornado warnings1143867%5980%17 min
NWS Tulsa, OK: severe thunderstorm warnings37714562%36077%23 min
NWS Tulsa, OK: flash flood warnings1224464%16189%139 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 1, 6:56 PM CSTRiver Flood WarningTSA23 hr
Jan 2, 10:45 AM CSTWinter Weather AdvisoryTSA43 hr
Jan 11, 6:59 AM CSTRiver Flood WarningTSA54 hr
Jan 18, 3:29 AM CSTWind AdvisoryTSA33 hr
Jan 18, 3:09 PM CSTWinter Weather AdvisoryTSA22 hr
Jan 21, 3:29 AM CSTWind AdvisoryTSA16 hr
Jan 22, 3:50 PM CSTWinter Weather AdvisoryTSA11 hr
Feb 5, 2:37 PM CSTWinter Weather AdvisoryTSA42 hr
Feb 6, 3:41 PM CSTDense Fog AdvisoryTSA8 hr
Feb 6, 9:06 PM CSTMesoscale DiscussionSPC114 min
Feb 9, 2:52 PM CSTWinter Weather AdvisoryTSA20 hr
Feb 14, 2:26 PM CSTWinter Weather AdvisoryTSA34 hr
Feb 16, 5:40 PM CSTWinter Weather AdvisoryTSA10 hr
Feb 18, 3:27 PM CSTWinter Weather AdvisoryTSA38 hr
Feb 22, 3:41 PM CSTWind AdvisoryTSA33 hr
Feb 26, 3:54 PM CSTWinter Weather AdvisoryTSA44 hr
Mar 2, 3:54 AM CSTWinter Weather AdvisoryTSA32 hr
Mar 3, 3:24 PM CSTWind Chill AdvisoryTSA19 hr
Mar 9, 1:58 AM CSTMesoscale DiscussionSPC92 min
Mar 9, 2:31 AM CSTSevere Thunderstorm WatchSPC7 hr
Mar 9, 4:05 AM CSTWind AdvisoryTSA14 hr
Mar 9, 4:45 AM CSTMesoscale DiscussionSPC60 min
Mar 12, 11:49 AM CDTWind AdvisoryTSA55 hr
Mar 12, 2:10 PM CDTRiver Flood WarningTSA4 days
Mar 26, 4:52 AM CDTDense Fog AdvisoryTSA5 hr
Mar 29, 8:39 AM CDTMesoscale DiscussionSPC96 min
Mar 29, 11:30 PM CDTMesoscale DiscussionSPC3 hr
Mar 30, 12:59 AM CDTSevere Thunderstorm WatchSPC6 hr
Mar 30, 3:33 PM CDTFreeze WarningTSA17 hr
Mar 31, 3:25 PM CDTFreeze WarningTSA18 hr
Apr 5, 3:26 AM CDTDense Fog AdvisoryTSA6 hr
Apr 5, 9:07 AM CDTDense Fog AdvisoryTSA113 min
Apr 10, 3:23 AM CDTWind AdvisoryTSA19 hr
Apr 11, 3:15 PM CDTFrost AdvisoryTSA17 hr
Apr 13, 6:11 PM CDTWind AdvisoryTSA5 hr
Apr 17, 9:52 PM CDTMesoscale DiscussionSPC83 min
Apr 17, 11:48 PM CDTSpecial Weather StatementTSA42 min
Apr 29, 3:40 AM CDTFlash Flood WatchTSA3 days
Apr 29, 10:48 AM CDTRiver Flood WatchTSA24 hr
Apr 29, 10:48 AM CDTRiver Flood WatchTSA38 hr
Apr 30, 9:56 AM CDTRiver Flood WarningTSA21 days
Apr 30, 11:41 AM CDTMesoscale DiscussionSPC2 hr
Apr 30, 12:02 PM CDTTornado WatchSPC13 hr
Apr 30, 1:06 PM CDTSevere Thunderstorm WarningTSA39 min
Apr 30, 3:26 PM CDTMesoscale DiscussionSPC2 hr
Apr 30, 3:43 PM CDTTornado WarningTSA47 min
Apr 30, 4:26 PM CDTTornado WarningTSA49 min
Apr 30, 4:56 PM CDTTornado WarningTSA19 min
Apr 30, 5:05 PM CDTTornado WarningTSA40 min
Apr 30, 5:27 PM CDTAreal Flood AdvisoryTSA2 hr
Apr 30, 5:43 PM CDTTornado WarningTSA32 min
Apr 30, 6:00 PM CDTMesoscale DiscussionSPC90 min
Apr 30, 6:15 PM CDTSevere Thunderstorm WarningTSA30 min
Apr 30, 6:18 PM CDTFlash Flood WarningTSA6 hr
Apr 30, 6:43 PM CDTTornado WarningTSA32 min
Apr 30, 8:48 PM CDTFlash Flood WarningTSA6 hr
May 1, 12:14 AM CDTAreal Flood WarningTSA18 hr
May 1, 12:41 AM CDTRiver Flood WarningTSA61 hr
May 1, 1:16 AM CDTAreal Flood WarningTSA18 hr
May 2, 4:21 AM CDTFlash Flood WatchTSA41 hr
May 6, 9:16 PM CDTRiver Flood WarningTSA9 days
May 6, 10:18 PM CDTMesoscale DiscussionSPC57 min
May 6, 11:28 PM CDTSpecial Weather StatementTSA47 min
May 6, 11:54 PM CDTSpecial Weather StatementTSA51 min
May 7, 12:25 AM CDTAreal Flood AdvisoryTSA3 hr
May 7, 12:38 AM CDTSpecial Weather StatementTSA37 min
May 8, 3:16 AM CDTSpecial Weather StatementTSA59 min
May 8, 4:04 AM CDTSpecial Weather StatementTSA41 min
May 15, 9:58 AM CDTRiver Flood AdvisoryTSA52 hr
May 18, 9:10 AM CDTTornado WatchSPC8 hr
May 18, 9:38 AM CDTMesoscale DiscussionSPC2 hr
May 18, 12:30 PM CDTSevere Thunderstorm WarningTSA45 min
May 18, 12:40 PM CDTSevere Thunderstorm WarningTSA50 min
May 18, 1:08 PM CDTSevere Thunderstorm WarningTSA67 min
May 18, 8:54 PM CDTRiver Flood WarningTSA19 days
May 19, 12:32 AM CDTSevere Thunderstorm WarningTSA43 min
May 19, 12:00 PM CDTFlash Flood WatchTSA51 hr
May 20, 12:43 PM CDTSevere Thunderstorm WarningTSA47 min
May 20, 1:26 PM CDTSevere Thunderstorm WarningTSA19 min
May 20, 2:20 PM CDTRiver Flood WarningTSA7 days
May 20, 4:35 PM CDTMesoscale DiscussionSPC115 min
May 20, 5:14 PM CDTTornado WatchSPC8 hr
May 20, 6:51 PM CDTFlash Flood WarningTSA8 hr
May 20, 8:39 PM CDTSevere Thunderstorm WarningTSA66 min
May 20, 9:39 PM CDTSevere Thunderstorm WarningTSA40 min
May 20, 10:30 PM CDTMesoscale DiscussionSPC60 min
May 21, 2:42 AM CDTFlash Flood WarningTSA6 hr
May 21, 5:09 AM CDTTornado WatchSPC9 hr
May 21, 7:26 AM CDTMesoscale DiscussionSPC94 min
May 21, 7:33 AM CDTSevere Thunderstorm WarningTSA57 min
May 21, 7:52 AM CDTFlash Flood WarningTSA3 hr
May 21, 8:49 AM CDTAreal Flood WarningTSA24 hr
May 22, 3:07 AM CDTFlash Flood WatchTSA28 hr
May 22, 3:06 PM CDTMesoscale DiscussionSPC114 min
May 22, 3:32 PM CDTTornado Watch PDSSPC7 hr
May 22, 5:05 PM CDTMesoscale DiscussionSPC85 min
May 22, 6:12 PM CDTSevere Thunderstorm WarningTSA63 min
May 22, 6:32 PM CDTTornado WarningTSA43 min
May 22, 6:58 PM CDTTornado WarningTSA47 min
May 22, 7:32 PM CDTMesoscale DiscussionSPC88 min
May 22, 8:49 PM CDTTornado WarningTSA41 min
May 22, 9:11 PM CDTAreal Flood AdvisoryTSA3 hr
May 22, 9:34 PM CDTMesoscale DiscussionSPC56 min
May 22, 9:44 PM CDTTornado WatchSPC8 hr
May 22, 11:47 PM CDTFlash Flood WarningTSA3 hr
May 23, 12:29 AM CDTSevere Thunderstorm WarningTSA46 min
May 23, 12:30 AM CDTTornado WarningTSA45 min
May 23, 12:57 AM CDTTornado Warning Tornado observedTSA45 min
May 23, 12:59 AM CDTMesoscale DiscussionSPC91 min
May 23, 1:22 AM CDTSevere Thunderstorm WarningTSA38 min
May 23, 1:48 AM CDTSevere Thunderstorm WarningTSA42 min
May 23, 3:20 AM CDTAreal Flood WarningTSA24 hr
May 23, 4:08 AM CDTSpecial Weather StatementTSA37 min
May 24, 12:25 PM CDTFlash Flood WatchTSA44 hr
May 24, 9:16 PM CDTMesoscale DiscussionSPC29 min
May 24, 11:01 PM CDTAreal Flood AdvisoryTSA3 hr
May 25, 8:47 PM CDTSevere Thunderstorm WatchSPC6 hr
May 26, 1:39 AM CDTMesoscale DiscussionSPC2 hr
May 26, 8:52 AM CDTFlash Flood WatchTSA4 hr
May 26, 9:19 AM CDTAreal Flood AdvisoryTSA4 hr
May 28, 3:29 PM CDTFlash Flood WatchTSA30 hr
May 28, 7:27 PM CDTSpecial Weather StatementTSA48 min
May 29, 9:40 AM CDTMesoscale DiscussionSPC65 min
May 29, 10:04 AM CDTSevere Thunderstorm WatchSPC7 hr
May 29, 2:41 PM CDTAreal Flood AdvisoryTSA3 hr
May 29, 4:17 PM CDTAreal Flood WarningTSA24 hr
Jun 1, 5:01 PM CDTSpecial Weather StatementTSA29 min
Jun 1, 5:28 PM CDTSpecial Weather StatementTSA32 min
Jun 1, 9:14 PM CDTSpecial Weather StatementTSA46 min
Jun 1, 9:52 PM CDTSpecial Weather StatementTSA23 min
Jun 3, 2:41 PM CDTSpecial Weather StatementTSA49 min
Jun 3, 3:32 PM CDTSpecial Weather StatementTSA28 min
Jun 3, 4:25 PM CDTAreal Flood AdvisoryTSA3 hr
Jun 3, 4:39 PM CDTAreal Flood AdvisoryTSA3 hr
Jun 3, 7:19 PM CDTAreal Flood AdvisoryTSA6 hr
Jun 6, 3:20 AM CDTFlash Flood WatchTSA22 hr
Jun 15, 12:40 AM CDTSevere Thunderstorm WatchSPC4 hr
Jun 15, 2:04 AM CDTMesoscale DiscussionSPC86 min
Jun 15, 3:36 AM CDTSpecial Weather StatementTSA39 min
Jun 15, 4:13 AM CDTSpecial Weather StatementTSA47 min
Jun 15, 8:06 PM CDTMesoscale DiscussionSPC114 min
Jun 15, 9:35 PM CDTFlash Flood WatchTSA8 hr
Jun 15, 11:47 PM CDTSevere Thunderstorm WatchSPC4 hr
Jun 16, 3:56 AM CDTSpecial Weather StatementTSA49 min
Jun 16, 8:09 AM CDTRiver Flood AdvisoryTSA22 hr
Jun 17, 5:58 AM CDTRiver Flood WarningTSA4 days
Jun 17, 6:41 AM CDTAreal Flood AdvisoryTSA2 hr
Jun 18, 9:19 PM CDTSpecial Weather StatementTSA26 min
Jun 18, 9:47 PM CDTSpecial Weather StatementTSA28 min
Jun 19, 3:33 AM CDTAreal Flood AdvisoryTSA117 min
Jun 21, 2:22 PM CDTFlash Flood WatchTSA61 hr
Jun 22, 4:32 AM CDTMesoscale DiscussionSPC88 min
Jun 23, 7:07 AM CDTMesoscale DiscussionSPC83 min
Jun 23, 7:21 AM CDTSevere Thunderstorm WatchSPC5 hr
Jun 23, 8:24 AM CDTFlash Flood WarningTSA6 hr
Jun 23, 8:27 AM CDTRiver Flood WarningTSA4 days
Jun 23, 2:29 PM CDTRiver Flood WarningTSA43 hr
Jun 26, 3:09 AM CDTSpecial Weather StatementTSA51 min
Jun 26, 3:43 AM CDTSpecial Weather StatementTSA32 min
Jun 26, 4:14 AM CDTSpecial Weather StatementTSA46 min
Jul 3, 5:42 PM CDTSpecial Weather StatementTSA63 min
Jul 5, 3:29 PM CDTSpecial Weather StatementTSA61 min
Jul 7, 8:16 AM CDTRiver Flood AdvisoryTSA50 hr
Jul 8, 3:52 PM CDTHeat AdvisoryTSA28 hr
Jul 9, 3:30 PM CDTHeat AdvisoryTSA26 hr
Jul 10, 11:29 AM CDTMesoscale DiscussionSPC3 hr
Jul 10, 11:34 AM CDTSpecial Weather StatementTSA41 min
Jul 10, 12:00 PM CDTSpecial Weather StatementTSA45 min
Jul 16, 2:20 PM CDTExcessive Heat WarningTSA31 hr
Jul 17, 2:46 PM CDTExcessive Heat WarningTSA30 hr
Jul 18, 3:27 PM CDTHeat AdvisoryTSA30 hr
Jul 19, 3:55 PM CDTHeat AdvisoryTSA29 hr
Jul 20, 3:55 PM CDTHeat AdvisoryTSA29 hr
Jul 21, 8:21 PM CDTMesoscale DiscussionSPC84 min
Jul 21, 9:52 PM CDTSevere Thunderstorm WarningTSA38 min
Jul 21, 9:59 PM CDTMesoscale DiscussionSPC61 min
Jul 21, 10:29 PM CDTSpecial Weather StatementTSA31 min
Jul 21, 11:40 PM CDTMesoscale DiscussionSPC65 min
Jul 29, 4:29 PM CDTSpecial Weather StatementTSA31 min
Jul 29, 4:55 PM CDTSpecial Weather StatementTSA35 min
Jul 29, 5:09 PM CDTSevere Thunderstorm WarningTSA36 min
Aug 1, 2:27 AM CDTSpecial Weather StatementTSA48 min
Aug 1, 3:12 AM CDTSpecial Weather StatementTSA48 min
Aug 1, 8:34 AM CDTRiver Flood WarningTSA4 days
Aug 1, 9:33 AM CDTFlash Flood WatchTSA55 hr
Aug 2, 9:24 AM CDTAreal Flood AdvisoryTSA3 hr
Aug 3, 11:46 AM CDTAreal Flood AdvisoryTSA3 hr
Aug 4, 3:12 AM CDTDense Fog AdvisoryTSA6 hr
Aug 6, 4:52 PM CDTMesoscale DiscussionSPC2 hr
Aug 6, 7:36 PM CDTSpecial Weather StatementTSA24 min
Aug 6, 8:06 PM CDTSpecial Weather StatementTSA39 min
Aug 6, 8:29 PM CDTSpecial Weather StatementTSA46 min
Aug 7, 11:40 PM CDTSpecial Weather StatementTSA50 min
Aug 8, 3:42 AM CDTFlash Flood WatchTSA33 hr
Aug 8, 9:15 AM CDTRiver Flood WarningTSA4 days
Aug 8, 10:44 AM CDTAreal Flood AdvisoryTSA2 hr
Aug 9, 3:09 PM CDTHeat AdvisoryTSA29 hr
Aug 9, 3:09 PM CDTHeat AdvisoryTSA53 hr
Aug 10, 3:12 PM CDTHeat AdvisoryTSA53 hr
Aug 12, 9:34 AM CDTRiver Flood WarningTSA47 hr
Aug 16, 6:04 AM CDTMesoscale DiscussionSPC56 min
Aug 18, 1:42 AM CDTMesoscale DiscussionSPC93 min
Aug 18, 2:42 AM CDTSevere Thunderstorm WatchSPC4 hr
Aug 18, 3:47 AM CDTHeat AdvisoryTSA41 hr
Aug 18, 4:52 AM CDTSpecial Weather StatementTSA53 min
Aug 18, 6:09 AM CDTMesoscale DiscussionSPC66 min
Aug 18, 1:46 PM CDTRiver Flood AdvisoryTSA18 hr
Aug 19, 3:11 AM CDTHeat AdvisoryTSA42 hr
Aug 20, 2:54 AM CDTHeat AdvisoryTSA40 hr
Aug 22, 1:40 AM CDTSpecial Weather StatementTSA50 min
Aug 22, 3:13 AM CDTFlash Flood WatchTSA34 hr
Aug 22, 4:35 AM CDTAreal Flood AdvisoryTSA3 hr
Aug 22, 5:27 AM CDTAreal Flood AdvisoryTSA3 hr
Aug 24, 8:40 PM CDTFlash Flood WatchTSA16 hr
Aug 25, 4:16 PM CDTHeat AdvisoryTSA27 hr
Aug 26, 3:39 PM CDTMesoscale DiscussionSPC3 hr
Aug 26, 5:10 PM CDTSevere Thunderstorm WatchSPC7 hr
Aug 26, 7:54 PM CDTMesoscale DiscussionSPC2 hr
Aug 26, 8:38 PM CDTSevere Thunderstorm WarningTSA52 min
Aug 26, 9:19 PM CDTTornado WarningTSA19 min
Aug 26, 9:34 PM CDTMesoscale DiscussionSPC116 min
Aug 26, 9:37 PM CDTSevere Thunderstorm WarningTSA53 min
Aug 26, 10:21 PM CDTMesoscale DiscussionSPC114 min
Aug 26, 10:23 PM CDTAreal Flood AdvisoryTSA2 hr
Aug 29, 2:27 PM CDTFlash Flood WatchTSA21 hr
Aug 30, 2:31 AM CDTMesoscale DiscussionSPC89 min
Aug 30, 3:28 AM CDTSpecial Weather StatementTSA62 min
Sep 22, 7:59 AM CDTRiver Flood WarningTSA72 hr
Sep 22, 10:12 AM CDTAreal Flood AdvisoryTSA3 hr
Sep 25, 3:12 PM CDTFlash Flood WatchTSA21 hr
Sep 25, 9:07 PM CDTMesoscale DiscussionSPC113 min
Sep 25, 9:30 PM CDTSevere Thunderstorm WatchSPC8 hr
Sep 25, 9:45 PM CDTSpecial Weather StatementTSA45 min
Sep 25, 10:00 PM CDTSpecial Weather StatementTSA45 min
Sep 25, 10:10 PM CDTSevere Thunderstorm WarningTSA50 min
Sep 25, 10:36 PM CDTSevere Thunderstorm WarningTSA39 min
Sep 25, 10:44 PM CDTAreal Flood AdvisoryTSA3 hr
Sep 25, 10:59 PM CDTFlash Flood WarningTSA4 hr
Sep 25, 11:22 PM CDTMesoscale DiscussionSPC83 min
Sep 25, 11:32 PM CDTSpecial Weather StatementTSA43 min
Sep 25, 11:41 PM CDTSevere Thunderstorm WarningTSA49 min
Oct 10, 9:15 AM CDTSpecial Weather StatementTSA30 min
Oct 10, 12:14 PM CDTMesoscale DiscussionSPC2 hr
Oct 10, 12:51 PM CDTSevere Thunderstorm WatchSPC7 hr
Oct 10, 1:21 PM CDTFlash Flood WatchTSA15 hr
Oct 10, 2:48 PM CDTFreeze WatchTSA22 hr
Oct 11, 1:08 PM CDTFreeze WarningTSA19 hr
Oct 20, 3:32 AM CDTDense Fog AdvisoryTSA8 hr
Oct 20, 9:39 PM CDTMesoscale DiscussionSPC96 min
Oct 20, 9:59 PM CDTSevere Thunderstorm WarningTSA27 min
Oct 20, 10:34 PM CDTSpecial Weather StatementTSA26 min
Oct 20, 10:58 PM CDTSevere Thunderstorm WarningTSA47 min
Oct 30, 3:44 AM CDTFreeze WarningTSA30 hr
Nov 6, 5:09 PM CSTSpecial Weather StatementTSA36 min
Nov 11, 8:52 AM CSTWinter Weather AdvisoryTSA9 hr
Nov 26, 3:09 AM CSTWind AdvisoryTSA24 hr
Nov 26, 6:58 PM CSTHigh Wind WarningTSA104 min
Nov 29, 7:25 PM CSTSpecial Weather StatementTSA50 min
Nov 30, 9:41 PM CSTWind AdvisoryTSA15 hr
Dec 15, 9:36 AM CSTWinter Weather AdvisoryTSA35 hr
Dec 16, 4:24 AM CSTMesoscale DiscussionSPC6 hr
Dec 17, 9:30 PM CSTDense Fog AdvisoryTSA10 hr
Dec 21, 3:46 PM CSTDense Fog AdvisoryTSA21 hr
Dec 22, 3:52 PM CSTDense Fog AdvisoryTSA19 hr
Dec 28, 3:06 PM CSTMesoscale DiscussionSPC84 min
Dec 28, 3:49 PM CSTTornado WatchSPC6 hr
Dec 28, 4:25 PM CSTSpecial Weather StatementTSA50 min
Dec 28, 4:45 PM CSTMesoscale DiscussionSPC90 min

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 archive20182020

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.