Alert archive / Nebraska / Sarpy County

Weather alerts in Sarpy County, Nebraska, 2013

118 weather alerts in 2013, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Sarpy County and its neighbors

Each county as a circle sized by its count in 2013. Tap one for its archive.

Alerts
118
Warnings
24
Watches
17
Advisories
23
Busiest month
May25 alerts
Busiest day
October 4, 201310 alerts

Over time

By month

Warning verification

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

Sarpy County, 2013

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings211624%1593%14 min
Flash flood warnings00

Each office's whole area, 2013

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Omaha, NE: tornado warnings23770%1979%16 min
NWS Omaha, NE: severe thunderstorm warnings22912446%26682%16 min
NWS Omaha, NE: flash flood warnings221245%1694%37 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, 7:31 PM CSTDense Fog AdvisoryOAX16 hr
Jan 27, 3:22 PM CSTDense Fog AdvisoryOAX35 hr
Jan 29, 4:00 AM CSTWinter Weather AdvisoryOAX29 hr
Jan 29, 8:29 PM CSTMesoscale DiscussionSPC4 hr
Feb 9, 3:17 PM CSTWind AdvisoryOAX36 hr
Feb 18, 9:57 AM CSTSpecial Weather StatementOAX78 min
Feb 18, 3:15 PM CSTWinter Storm WatchOAX49 hr
Feb 19, 4:09 PM CSTWinter Storm WarningOAX60 hr
Feb 21, 1:24 PM CSTMesoscale DiscussionSPC4 hr
Mar 4, 3:54 AM CSTWind AdvisoryOAX35 hr
Mar 9, 3:39 AM CSTWinter Storm WarningOAX46 hr
Mar 9, 3:39 AM CSTWinter Weather AdvisoryOAX45 hr
Mar 12, 1:53 PM CDTSpecial Weather StatementOAX3 hr
Mar 23, 4:34 AM CDTWinter Weather AdvisoryOAX26 hr
Mar 24, 7:00 AM CDTWinter Weather AdvisoryOAX3 hr
Apr 9, 8:06 PM CDTSevere Thunderstorm WarningOAX24 min
Apr 9, 8:16 PM CDTSevere Thunderstorm WarningOAX29 min
Apr 9, 8:53 PM CDTSevere Thunderstorm WarningOAX37 min
Apr 9, 10:01 PM CDTSpecial Weather StatementOAX59 min
Apr 24, 7:01 PM CDTSpecial Weather StatementOAX59 min
Apr 29, 7:26 PM CDTMesoscale DiscussionSPC3 hr
May 1, 3:53 PM CDTWinter Weather AdvisoryOAX18 hr
May 1, 8:10 PM CDTMesoscale DiscussionSPC4 hr
May 9, 3:19 PM CDTSpecial Weather StatementOAX86 min
May 11, 2:56 PM CDTFrost AdvisoryOAX17 hr
May 13, 3:36 PM CDTFire Weather WatchOAX12 hr
May 14, 3:55 AM CDTRed Flag WarningOAX17 hr
May 18, 8:33 PM CDTMesoscale DiscussionSPC117 min
May 18, 9:26 PM CDTSevere Thunderstorm WatchSPC5 hr
May 19, 12:54 AM CDTSpecial Weather StatementOAX51 min
May 19, 3:14 PM CDTSevere Thunderstorm WarningOAX31 min
May 19, 3:46 PM CDTSevere Thunderstorm WarningOAX44 min
May 19, 4:50 PM CDTSevere Thunderstorm WatchSPC5 hr
May 26, 6:47 PM CDTMesoscale DiscussionSPC88 min
May 26, 11:03 PM CDTSevere Thunderstorm WatchSPC6 hr
May 27, 1:40 AM CDTMesoscale DiscussionSPC95 min
May 27, 1:53 AM CDTSevere Thunderstorm WarningOAX37 min
May 27, 2:29 AM CDTSevere Thunderstorm WarningOAX31 min
May 29, 8:54 AM CDTMesoscale DiscussionSPC2 hr
May 29, 10:13 AM CDTFlash Flood WatchOAX28 hr
May 29, 6:24 PM CDTTornado WatchSPC4 hr
May 30, 7:34 PM CDTSevere Thunderstorm WarningOAX26 min
May 30, 7:41 PM CDTMesoscale DiscussionSPC2 hr
May 30, 7:50 PM CDTSevere Thunderstorm WarningOAX25 min
May 30, 8:03 PM CDTSevere Thunderstorm WarningOAX27 min
May 30, 8:27 PM CDTSevere Thunderstorm WarningOAX33 min
Jun 8, 3:16 PM CDTMesoscale DiscussionSPC89 min
Jun 8, 3:56 PM CDTSevere Thunderstorm WatchSPC6 hr
Jun 8, 5:39 PM CDTMesoscale DiscussionSPC96 min
Jun 8, 7:05 PM CDTSpecial Weather StatementOAX25 min
Jun 8, 7:44 PM CDTMesoscale DiscussionSPC2 hr
Jun 14, 2:28 AM CDTMesoscale DiscussionSPC2 hr
Jun 14, 3:10 PM CDTMesoscale DiscussionSPC2 hr
Jun 14, 3:37 PM CDTTornado WatchSPC6 hr
Jun 14, 6:11 PM CDTMesoscale DiscussionSPC94 min
Jun 14, 7:50 PM CDTSpecial Weather StatementOAX40 min
Jun 14, 8:03 PM CDTSevere Thunderstorm WarningOAX42 min
Jun 14, 8:41 PM CDTSevere Thunderstorm WarningOAX34 min
Jun 14, 8:44 PM CDTSevere Thunderstorm WarningOAX46 min
Jun 14, 9:43 PM CDTSpecial Weather StatementOAX32 min
Jun 23, 7:54 PM CDTMesoscale DiscussionSPC96 min
Jun 24, 9:25 AM CDTSpecial Weather StatementOAX50 min
Jun 24, 9:53 AM CDTSevere Thunderstorm WarningOAX37 min
Jun 25, 8:23 PM CDTMesoscale DiscussionSPC97 min
Jun 27, 4:28 AM CDTMesoscale DiscussionSPC62 min
Jun 27, 11:35 AM CDTMesoscale DiscussionSPC115 min
Jun 27, 2:05 PM CDTSpecial Weather StatementOAX25 min
Jul 2, 5:59 PM CDTSpecial Weather StatementOAX31 min
Jul 7, 9:14 PM CDTMesoscale DiscussionSPC2 hr
Jul 8, 3:20 PM CDTHeat AdvisoryOAX28 hr
Jul 21, 6:27 PM CDTSevere Thunderstorm WarningOAX48 min
Jul 21, 7:30 PM CDTSevere Thunderstorm WarningOAX45 min
Jul 22, 3:08 PM CDTSevere Thunderstorm WatchSPC9 hr
Jul 25, 5:18 PM CDTSevere Thunderstorm WatchSPC4 hr
Jul 30, 3:40 PM CDTDense Fog AdvisoryOAX17 hr
Aug 1, 3:25 PM CDTMesoscale DiscussionSPC95 min
Aug 1, 6:02 PM CDTMesoscale DiscussionSPC58 min
Aug 1, 6:07 PM CDTSevere Thunderstorm WatchSPC7 hr
Aug 1, 7:15 PM CDTSpecial Weather StatementOAX45 min
Aug 6, 5:07 AM CDTMesoscale DiscussionSPC83 min
Aug 6, 6:35 AM CDTSevere Thunderstorm WatchSPC4 hr
Aug 6, 8:49 AM CDTSpecial Weather StatementOAX26 min
Aug 6, 9:26 AM CDTMesoscale DiscussionSPC64 min
Aug 6, 6:51 PM CDTSevere Thunderstorm WatchSPC3 hr
Aug 6, 9:37 PM CDTMesoscale DiscussionSPC113 min
Aug 25, 3:27 AM CDTHeat AdvisoryOAX64 hr
Aug 30, 3:39 AM CDTHeat AdvisoryOAX15 hr
Sep 1, 1:10 AM CDTMesoscale DiscussionSPC95 min
Sep 1, 3:01 AM CDTSpecial Weather StatementOAX44 min
Sep 1, 3:23 AM CDTSevere Thunderstorm WarningOAX37 min
Sep 19, 1:19 PM CDTMesoscale DiscussionSPC86 min
Oct 3, 12:24 AM CDTSpecial Weather StatementOAX51 min
Oct 3, 3:52 PM CDTMesoscale DiscussionSPC113 min
Oct 3, 7:32 PM CDTMesoscale DiscussionSPC2 hr
Oct 3, 8:16 PM CDTSevere Thunderstorm WatchSPC9 hr
Oct 3, 9:13 PM CDTTornado WatchSPC5 hr
Oct 3, 9:59 PM CDTSpecial Weather StatementOAX31 min
Oct 3, 11:30 PM CDTSevere Thunderstorm WarningOAX30 min
Oct 3, 11:42 PM CDTMesoscale DiscussionSPC93 min
Oct 4, 2:06 AM CDTMesoscale DiscussionSPC84 min
Oct 4, 1:28 PM CDTMesoscale DiscussionSPC2 hr
Oct 4, 2:38 PM CDTTornado WatchSPC7 hr
Oct 4, 5:20 PM CDTMesoscale DiscussionSPC85 min
Oct 14, 6:11 PM CDTSpecial Weather StatementOAX49 min
Oct 14, 6:58 PM CDTSpecial Weather StatementOAX32 min
Oct 30, 6:45 AM CDTMesoscale DiscussionSPC2 hr
Oct 30, 8:31 AM CDTSevere Thunderstorm WarningOAX29 min
Oct 30, 9:13 AM CDTSevere Thunderstorm WarningOAX32 min
Nov 1, 5:27 PM CDTSpecial Weather StatementOAX48 min
Nov 2, 3:55 PM CDTWind AdvisoryOAX27 hr
Nov 21, 11:54 AM CSTWinter Weather AdvisoryOAX12 hr
Dec 4, 3:20 AM CSTWinter Weather AdvisoryOAX6 hr
Dec 7, 3:47 PM CSTWinter Weather AdvisoryOAX22 hr
Dec 8, 3:34 AM CSTWind Chill AdvisoryOAX31 hr
Dec 13, 3:26 PM CSTWinter Weather AdvisoryOAX6 hr
Dec 22, 3:40 AM CSTWind Chill AdvisoryOAX32 hr
Dec 23, 4:02 AM CSTWind Chill AdvisoryOAX28 hr
Dec 28, 3:27 PM CSTWind AdvisoryOAX15 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 archive20122014

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.