Alert archive / South Dakota / Pennington County

Weather alerts in Pennington County, South Dakota, 2014

264 weather alerts in 2014, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Pennington County and its neighbors

Each county as a circle sized by its count in 2014. Tap one for its archive.

Alerts
264
Warnings
80
Watches
39
Advisories
77
Busiest month
June87 alerts
Busiest day
June 27, 201410 alerts

Over time

By month

Warning verification

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

1 of 1 tornado warnings covering Pennington County in 2014 had a tornado report inside them; 1 of 3 tornado reports fell inside a warning, on average 0 minutes after it went out.

Pennington County, 2014

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings110%333%0 min
Severe thunderstorm warnings544124%5387%20 min
Flash flood warnings10100%0

Each office's whole area, 2014

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Rapid City, SD: tornado warnings11555%1050%7 min
NWS Rapid City, SD: severe thunderstorm warnings27721423%38586%22 min
NWS Rapid City, SD: flash flood warnings10550%875%68 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, Mountain Time. Each opens its own page with the text, the map, the radar and the sounding.

IssuedProductOfficeLasted
Jan 3, 4:10 AM MSTWinter Weather AdvisoryUNR21 hr
Jan 3, 9:01 AM MSTWind AdvisoryUNR16 hr
Jan 3, 3:02 PM MSTWind Chill WarningUNR69 hr
Jan 6, 2:58 AM MSTWind Chill AdvisoryUNR9 hr
Jan 11, 1:50 PM MSTWind AdvisoryUNR27 hr
Jan 12, 2:49 PM MSTHigh Wind WatchUNR13 hr
Jan 12, 2:50 PM MSTWinter Storm WatchUNR13 hr
Jan 13, 3:43 AM MSTHigh Wind WarningUNR19 hr
Jan 13, 3:43 AM MSTWind AdvisoryUNR35 hr
Jan 13, 3:43 AM MSTWinter Storm WarningUNR35 hr
Jan 14, 3:22 PM MSTHigh Wind WatchUNR22 hr
Jan 15, 12:47 PM MSTWind AdvisoryUNR3 hr
Jan 15, 1:41 PM MSTHigh Wind WarningUNR28 hr
Jan 16, 12:12 AM MSTWinter Weather AdvisoryUNR13 hr
Jan 17, 2:39 PM MSTWind AdvisoryUNR22 hr
Jan 18, 2:13 AM MSTHigh Wind WarningUNR8 hr
Jan 19, 2:29 PM MSTWind AdvisoryUNR24 hr
Jan 20, 2:56 AM MSTHigh Wind WarningUNR12 hr
Jan 21, 9:48 AM MSTWind AdvisoryUNR8 hr
Jan 23, 2:41 AM MSTHigh Wind WatchUNR25 hr
Jan 23, 8:46 PM MSTHigh Wind WarningUNR27 hr
Jan 25, 3:37 AM MSTHigh Wind WatchUNR5 hr
Jan 25, 9:03 AM MSTHigh Wind WarningUNR35 hr
Jan 26, 3:10 AM MSTWinter Weather AdvisoryUNR14 hr
Jan 26, 1:37 PM MSTWind Chill AdvisoryUNR19 hr
Jan 29, 1:48 PM MSTWinter Weather AdvisoryUNR13 hr
Feb 4, 3:13 AM MSTWind Chill AdvisoryUNR57 hr
Feb 6, 7:36 PM MSTWind Chill AdvisoryUNR13 hr
Feb 16, 4:49 PM MSTHigh Wind WarningUNR4 hr
Feb 18, 2:46 AM MSTWind AdvisoryUNR14 hr
Feb 19, 2:23 PM MSTWind AdvisoryUNR27 hr
Feb 20, 2:48 AM MSTHigh Wind WarningUNR14 hr
Feb 21, 3:15 AM MSTWind AdvisoryUNR11 hr
Feb 23, 3:35 AM MSTWinter Weather AdvisoryUNR35 hr
Feb 27, 4:15 AM MSTWinter Storm WatchUNR24 hr
Feb 28, 3:51 AM MSTWinter Weather AdvisoryUNR37 hr
Feb 28, 2:32 PM MSTWind Chill AdvisoryUNR44 hr
Mar 2, 2:20 PM MSTWind Chill AdvisoryUNR18 hr
Mar 9, 3:13 PM MDTWinter Storm WatchUNR24 hr
Mar 10, 3:01 PM MDTWinter Storm WarningUNR19 hr
Mar 10, 3:01 PM MDTWinter Weather AdvisoryUNR19 hr
Mar 11, 10:20 AM MDTWind AdvisoryUNR8 hr
Mar 15, 8:01 AM MDTWinter Weather AdvisoryUNR11 hr
Mar 16, 3:12 AM MDTWinter Storm WatchUNR24 hr
Mar 17, 3:18 AM MDTWinter Storm WarningUNR27 hr
Mar 17, 3:18 AM MDTWinter Weather AdvisoryUNR30 hr
Mar 21, 2:27 PM MDTWinter Weather AdvisoryUNR30 hr
Mar 29, 3:56 AM MDTWinter Storm WatchUNR25 hr
Mar 30, 5:06 AM MDTWinter Storm WarningUNR37 hr
Mar 30, 12:32 PM MDTBlizzard WarningUNR29 hr
Apr 2, 7:30 AM MDTWinter Weather AdvisoryUNR11 hr
Apr 7, 2:59 AM MDTWind AdvisoryUNR12 hr
Apr 9, 4:38 AM MDTWind AdvisoryUNR15 hr
Apr 12, 3:01 PM MDTWinter Weather AdvisoryUNR19 hr
Apr 22, 2:34 PM MDTWind AdvisoryUNR27 hr
Apr 26, 2:19 PM MDTWinter Storm WatchUNR24 hr
Apr 26, 2:36 PM MDTHigh Wind WatchUNR31 hr
Apr 27, 12:31 AM MDTSpecial Weather StatementUNR44 min
Apr 27, 12:58 AM MDTMesoscale DiscussionSPC2 hr
Apr 27, 2:05 PM MDTWinter Storm WarningUNR20 hr
Apr 27, 9:23 PM MDTHigh Wind WarningUNR45 hr
Apr 28, 10:33 AM MDTWinter Weather AdvisoryUNR19 hr
Apr 29, 5:15 AM MDTWinter Storm WarningUNR13 hr
Apr 29, 6:08 PM MDTWind AdvisoryUNR24 hr
May 5, 2:48 PM MDTMesoscale DiscussionSPC57 min
May 6, 2:29 PM MDTWinter Storm WatchUNR13 hr
May 7, 3:39 AM MDTWinter Storm WarningUNR23 hr
May 7, 3:39 AM MDTWinter Weather AdvisoryUNR32 hr
May 10, 2:53 PM MDTWind AdvisoryUNR25 hr
May 11, 3:26 PM MDTWind AdvisoryUNR27 hr
May 18, 5:12 PM MDTSevere Thunderstorm WatchSPC7 hr
May 18, 7:44 PM MDTMesoscale DiscussionSPC61 min
May 22, 5:00 PM MDTMesoscale DiscussionSPC90 min
May 25, 4:44 AM MDTFlash Flood WatchUNR15 hr
May 27, 1:05 PM MDTSevere Thunderstorm WarningUNR40 min
May 27, 1:14 PM MDTMesoscale DiscussionSPC2 hr
May 27, 1:23 PM MDTTornado WarningUNR37 min
May 27, 1:46 PM MDTSevere Thunderstorm WarningUNR44 min
May 27, 2:23 PM MDTSevere Thunderstorm WarningUNR67 min
May 27, 3:41 PM MDTSevere Thunderstorm WarningUNR64 min
May 28, 1:57 AM MDTSpecial Weather StatementUNR48 min
May 29, 2:15 PM MDTMesoscale DiscussionSPC60 min
May 29, 2:45 PM MDTSevere Thunderstorm WatchSPC6 hr
May 29, 5:25 PM MDTMesoscale DiscussionSPC65 min
May 29, 7:47 PM MDTMesoscale DiscussionSPC58 min
May 31, 8:45 PM MDTSevere Thunderstorm WarningUNR45 min
Jun 3, 2:02 AM MDTMesoscale DiscussionSPC118 min
Jun 3, 3:48 AM MDTSpecial Weather StatementUNR42 min
Jun 3, 5:07 AM MDTSpecial Weather StatementUNR38 min
Jun 3, 6:00 AM MDTMesoscale DiscussionSPC2 hr
Jun 3, 8:08 AM MDTSevere Thunderstorm WarningUNR67 min
Jun 3, 8:36 AM MDTSevere Thunderstorm WatchSPC7 hr
Jun 3, 1:37 PM MDTSevere Thunderstorm WatchSPC6 hr
Jun 3, 4:40 PM MDTSevere Thunderstorm WarningUNR36 min
Jun 3, 5:40 PM MDTMesoscale DiscussionSPC65 min
Jun 4, 12:58 PM MDTMesoscale DiscussionSPC92 min
Jun 4, 1:44 PM MDTSevere Thunderstorm WatchSPC6 hr
Jun 4, 4:15 PM MDTSevere Thunderstorm WarningUNR30 min
Jun 4, 5:12 PM MDTSevere Thunderstorm WatchSPC8 hr
Jun 4, 6:30 PM MDTSevere Thunderstorm WarningUNR46 min
Jun 4, 6:34 PM MDTSevere Thunderstorm WarningUNR40 min
Jun 10, 2:43 PM MDTSevere Thunderstorm WatchSPC7 hr
Jun 10, 4:54 PM MDTMesoscale DiscussionSPC66 min
Jun 10, 6:56 PM MDTSevere Thunderstorm WarningUNR36 min
Jun 10, 8:09 PM MDTSpecial Weather StatementUNR51 min
Jun 10, 8:50 PM MDTSevere Thunderstorm WarningUNR55 min
Jun 13, 1:46 PM MDTMesoscale DiscussionSPC89 min
Jun 13, 2:09 PM MDTSevere Thunderstorm WatchSPC9 hr
Jun 13, 5:42 PM MDTSpecial Weather StatementUNR33 min
Jun 13, 6:11 PM MDTMesoscale DiscussionSPC2 hr
Jun 13, 7:06 PM MDTSevere Thunderstorm WarningUNR54 min
Jun 13, 8:26 PM MDTMesoscale DiscussionSPC94 min
Jun 14, 5:59 AM MDTSevere Thunderstorm WarningUNR61 min
Jun 14, 6:14 AM MDTMesoscale DiscussionSPC2 hr
Jun 14, 6:43 AM MDTSevere Thunderstorm WarningUNR77 min
Jun 14, 10:23 AM MDTAreal Flood AdvisoryUNR6 hr
Jun 16, 3:03 PM MDTMesoscale DiscussionSPC117 min
Jun 16, 5:56 PM MDTSevere Thunderstorm WarningUNR49 min
Jun 16, 6:43 PM MDTSevere Thunderstorm WarningUNR62 min
Jun 16, 6:55 PM MDTSevere Thunderstorm WarningUNR50 min
Jun 16, 7:07 PM MDTAreal Flood AdvisoryUNR3 hr
Jun 16, 7:41 PM MDTSevere Thunderstorm WarningUNR64 min
Jun 17, 11:40 AM MDTMesoscale DiscussionSPC2 hr
Jun 17, 12:31 PM MDTTornado WatchSPC7 hr
Jun 17, 2:22 PM MDTMesoscale DiscussionSPC113 min
Jun 17, 2:42 PM MDTFlash Flood WatchUNR9 hr
Jun 17, 5:02 PM MDTMesoscale DiscussionSPC88 min
Jun 17, 7:58 PM MDTSevere Thunderstorm WatchSPC5 hr
Jun 17, 10:08 PM MDTSevere Thunderstorm WarningUNR82 min
Jun 17, 11:07 PM MDTSevere Thunderstorm WarningUNR53 min
Jun 18, 12:05 AM MDTSevere Thunderstorm WarningUNR55 min
Jun 18, 12:19 AM MDTMesoscale DiscussionSPC56 min
Jun 18, 3:45 AM MDTMesoscale DiscussionSPC90 min
Jun 18, 5:39 AM MDTSevere Thunderstorm WarningUNR66 min
Jun 19, 1:37 PM MDTMesoscale DiscussionSPC53 min
Jun 21, 1:23 PM MDTMesoscale DiscussionSPC67 min
Jun 21, 1:56 PM MDTSevere Thunderstorm WatchSPC7 hr
Jun 21, 5:03 PM MDTSevere Thunderstorm WarningUNR47 min
Jun 21, 5:20 PM MDTAreal Flood AdvisoryUNR3 hr
Jun 21, 5:23 PM MDTSevere Thunderstorm WarningUNR67 min
Jun 21, 6:20 PM MDTSevere Thunderstorm WarningUNR55 min
Jun 21, 6:36 PM MDTSevere Thunderstorm WarningUNR54 min
Jun 21, 7:40 PM MDTSevere Thunderstorm WarningUNR32 min
Jun 21, 9:14 PM MDTSevere Thunderstorm WarningUNR50 min
Jun 24, 2:48 PM MDTFlash Flood WatchUNR3 days
Jun 25, 12:58 PM MDTMesoscale DiscussionSPC2 hr
Jun 25, 1:50 PM MDTSevere Thunderstorm WatchSPC7 hr
Jun 25, 3:33 PM MDTSevere Thunderstorm WarningUNR42 min
Jun 25, 5:07 PM MDTMesoscale DiscussionSPC83 min
Jun 25, 7:13 PM MDTSevere Thunderstorm WarningUNR32 min
Jun 25, 8:15 PM MDTMesoscale DiscussionSPC90 min
Jun 26, 12:35 PM MDTMesoscale DiscussionSPC115 min
Jun 26, 2:07 PM MDTMesoscale DiscussionSPC53 min
Jun 26, 3:01 PM MDTSevere Thunderstorm WatchSPC8 hr
Jun 26, 5:48 PM MDTMesoscale DiscussionSPC87 min
Jun 26, 5:56 PM MDTSevere Thunderstorm WarningUNR64 min
Jun 26, 8:13 PM MDTMesoscale DiscussionSPC62 min
Jun 26, 8:45 PM MDTAreal Flood AdvisoryUNR6 hr
Jun 26, 8:50 PM MDTSpecial Weather StatementUNR40 min
Jun 26, 9:02 PM MDTAreal Flood AdvisoryUNR6 hr
Jun 26, 9:09 PM MDTAreal Flood AdvisoryUNR3 hr
Jun 26, 9:13 PM MDTSevere Thunderstorm WarningUNR62 min
Jun 27, 2:20 AM MDTAreal Flood AdvisoryUNR6 hr
Jun 27, 3:57 PM MDTMesoscale DiscussionSPC93 min
Jun 27, 4:17 PM MDTSevere Thunderstorm WatchSPC6 hr
Jun 27, 5:47 PM MDTSevere Thunderstorm WarningUNR58 min
Jun 27, 6:04 PM MDTSevere Thunderstorm WarningUNR56 min
Jun 27, 6:41 PM MDTMesoscale DiscussionSPC94 min
Jun 27, 7:37 PM MDTSevere Thunderstorm WarningUNR68 min
Jun 27, 9:55 PM MDTAreal Flood AdvisoryUNR12 hr
Jun 28, 6:36 PM MDTSpecial Weather StatementUNR39 min
Jun 30, 2:47 AM MDTWind AdvisoryUNR16 hr
Jul 4, 2:43 PM MDTMesoscale DiscussionSPC92 min
Jul 4, 6:35 PM MDTSevere Thunderstorm WarningUNR55 min
Jul 5, 4:03 PM MDTMesoscale DiscussionSPC57 min
Jul 10, 1:57 PM MDTSevere Thunderstorm WarningUNR48 min
Jul 10, 2:37 PM MDTMesoscale DiscussionSPC83 min
Jul 10, 2:45 PM MDTSevere Thunderstorm WarningUNR45 min
Jul 11, 5:06 PM MDTSpecial Weather StatementUNR39 min
Jul 12, 3:07 PM MDTSevere Thunderstorm WarningUNR38 min
Jul 22, 2:30 PM MDTMesoscale DiscussionSPC2 hr
Jul 22, 2:57 PM MDTSevere Thunderstorm WatchSPC7 hr
Jul 22, 5:29 PM MDTSevere Thunderstorm WarningUNR46 min
Jul 22, 6:09 PM MDTSevere Thunderstorm WarningUNR51 min
Jul 22, 6:21 PM MDTMesoscale DiscussionSPC114 min
Jul 22, 6:40 PM MDTSevere Thunderstorm WarningUNR65 min
Jul 22, 8:17 PM MDTMesoscale DiscussionSPC88 min
Jul 22, 9:07 PM MDTSpecial Weather StatementUNR38 min
Jul 23, 12:47 AM MDTSpecial Weather StatementUNR43 min
Jul 23, 1:08 AM MDTSpecial Weather StatementUNR37 min
Jul 23, 1:11 AM MDTSevere Thunderstorm WarningUNR24 min
Jul 23, 2:19 AM MDTMesoscale DiscussionSPC116 min
Jul 24, 7:53 PM MDTWind AdvisoryUNR9 hr
Aug 1, 12:17 PM MDTSpecial Weather StatementUNR43 min
Aug 4, 3:21 PM MDTAreal Flood AdvisoryUNR6 hr
Aug 5, 5:58 PM MDTSevere Thunderstorm WarningUNR62 min
Aug 5, 7:00 PM MDTAreal Flood AdvisoryUNR6 hr
Aug 5, 7:13 PM MDTFlash Flood WarningUNR6 hr
Aug 8, 10:27 AM MDTAreal Flood AdvisoryUNR6 hr
Aug 9, 8:14 PM MDTSevere Thunderstorm WarningUNR45 min
Aug 9, 8:20 PM MDTSpecial Weather StatementUNR40 min
Aug 9, 8:37 PM MDTAreal Flood AdvisoryUNR3 hr
Aug 9, 8:53 PM MDTSpecial Weather StatementUNR37 min
Aug 13, 1:52 PM MDTFlash Flood WatchUNR44 hr
Aug 14, 2:10 PM MDTSevere Thunderstorm WarningUNR31 min
Aug 17, 12:56 PM MDTMesoscale DiscussionSPC64 min
Aug 17, 1:21 PM MDTSevere Thunderstorm WatchSPC8 hr
Aug 17, 2:48 PM MDTSevere Thunderstorm WarningUNR57 min
Aug 17, 3:15 PM MDTSevere Thunderstorm WarningUNR60 min
Aug 17, 3:29 PM MDTSevere Thunderstorm WarningUNR61 min
Aug 17, 3:37 PM MDTSpecial Weather StatementUNR38 min
Aug 17, 4:06 PM MDTSevere Thunderstorm WarningUNR54 min
Aug 17, 4:09 PM MDTMesoscale DiscussionSPC96 min
Aug 17, 4:23 PM MDTSevere Thunderstorm WarningUNR18 min
Aug 17, 5:43 PM MDTMesoscale DiscussionSPC62 min
Aug 22, 9:46 PM MDTFlood WatchUNR23 hr
Aug 27, 3:36 PM MDTAreal Flood AdvisoryUNR6 hr
Aug 30, 2:12 PM MDTMesoscale DiscussionSPC3 hr
Aug 30, 5:35 PM MDTSevere Thunderstorm WarningUNR55 min
Aug 30, 5:49 PM MDTMesoscale DiscussionSPC86 min
Aug 30, 6:21 PM MDTSevere Thunderstorm WarningUNR54 min
Aug 30, 6:27 PM MDTSevere Thunderstorm WatchSPC4 hr
Aug 31, 3:10 PM MDTSpecial Weather StatementUNR65 min
Aug 31, 10:09 PM MDTAreal Flood AdvisoryUNR12 hr
Sep 1, 1:34 PM MDTSpecial Weather StatementUNR41 min
Sep 1, 1:47 PM MDTMesoscale DiscussionSPC88 min
Sep 3, 2:09 PM MDTWind AdvisoryUNR25 hr
Sep 7, 2:57 PM MDTMesoscale DiscussionSPC93 min
Sep 7, 3:34 PM MDTSpecial Weather StatementUNR26 min
Sep 7, 3:54 PM MDTSpecial Weather StatementUNR36 min
Sep 10, 3:30 AM MDTWinter Weather AdvisoryUNR32 hr
Sep 10, 2:18 PM MDTWinter Storm WarningUNR21 hr
Sep 11, 11:53 AM MDTFreeze WarningUNR20 hr
Sep 20, 2:11 AM MDTWind AdvisoryUNR15 hr
Sep 29, 11:16 AM MDTFlood WatchUNR24 hr
Sep 30, 2:53 AM MDTWind AdvisoryUNR15 hr
Sep 30, 6:29 AM MDTAreal Flood AdvisoryUNR13 hr
Oct 2, 2:16 PM MDTWind AdvisoryUNR27 hr
Oct 5, 3:29 AM MDTWind AdvisoryUNR15 hr
Oct 12, 3:30 AM MDTWind AdvisoryUNR15 hr
Oct 15, 2:17 PM MDTWind AdvisoryUNR28 hr
Oct 26, 2:41 PM MDTWind AdvisoryUNR27 hr
Oct 30, 2:23 PM MDTWind AdvisoryUNR28 hr
Nov 4, 1:02 PM MSTWind AdvisoryUNR27 hr
Nov 6, 2:05 PM MSTHigh Wind WatchUNR13 hr
Nov 7, 2:54 AM MSTHigh Wind WarningUNR15 hr
Nov 8, 2:37 PM MSTWinter Storm WatchUNR13 hr
Nov 9, 3:16 AM MSTWinter Weather AdvisoryUNR36 hr
Nov 14, 2:55 AM MSTWinter Weather AdvisoryUNR35 hr
Nov 15, 2:46 PM MSTWinter Weather AdvisoryUNR36 hr
Nov 22, 8:02 AM MSTHigh Wind WatchUNR13 hr
Nov 22, 2:50 PM MSTWind AdvisoryUNR29 hr
Nov 22, 9:11 PM MSTHigh Wind WarningUNR17 hr
Nov 25, 3:40 AM MSTWind AdvisoryUNR23 hr
Dec 14, 3:29 AM MSTWinter Weather AdvisoryUNR38 hr
Dec 14, 8:46 PM MSTFreezing Rain AdvisoryUNR11 hr
Dec 21, 3:13 AM MSTWinter Storm WatchUNR12 hr
Dec 21, 2:55 PM MSTHigh Wind WarningUNR29 hr
Dec 21, 2:55 PM MSTWinter Storm WarningUNR48 hr
Dec 21, 2:55 PM MSTWinter Weather AdvisoryUNR45 hr
Dec 24, 2:02 PM MSTWinter Weather AdvisoryUNR33 hr
Dec 28, 3:34 AM MSTWinter Weather AdvisoryUNR29 hr
Dec 29, 3:40 AM MSTWind Chill AdvisoryUNR31 hr
Dec 30, 2:30 PM MSTWind Chill AdvisoryUNR18 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 archive20132015

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.