Alert archive / South Dakota / Custer County

Weather alerts in Custer County, South Dakota, 2019

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

Custer County and its neighbors

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

Alerts
270
Warnings
72
Watches
37
Advisories
47
Busiest month
July74 alerts
Busiest day
August 11, 201912 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 4 tornado warnings covering Custer County in 2019 had a tornado report inside them.

Custer County, 2019

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings4175%0
Severe thunderstorm warnings433226%2488%26 min
Flash flood warnings3233%3100%74 min

Each office's whole area, 2019

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Rapid City, SD: tornado warnings24771%1377%11 min
NWS Rapid City, SD: severe thunderstorm warnings44428935%58887%24 min
NWS Rapid City, SD: flash flood warnings241250%2886%94 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 7, 1:20 PM MSTWind AdvisoryUNR9 hr
Jan 12, 12:10 AM MSTDense Fog AdvisoryUNR11 hr
Jan 12, 5:11 PM MSTDense Fog AdvisoryUNR16 hr
Jan 15, 8:43 PM MSTDense Fog AdvisoryUNR9 hr
Jan 20, 1:40 PM MSTWinter Weather AdvisoryUNR38 hr
Jan 25, 3:11 AM MSTWinter Weather AdvisoryUNR48 hr
Jan 25, 3:12 AM MSTHigh Wind WatchUNR47 hr
Jan 27, 2:41 AM MSTHigh Wind WarningUNR32 hr
Jan 27, 2:41 AM MSTWinter Weather AdvisoryUNR32 hr
Jan 28, 2:21 AM MSTWind AdvisoryUNR9 hr
Feb 5, 2:23 PM MSTWind Chill AdvisoryUNR4 days
Feb 5, 2:23 PM MSTWinter Weather AdvisoryUNR35 hr
Feb 14, 2:14 PM MSTWinter Weather AdvisoryUNR24 hr
Feb 17, 1:43 PM MSTWind Chill AdvisoryUNR19 hr
Feb 24, 1:33 PM MSTWind Chill AdvisoryUNR20 hr
Mar 1, 2:05 PM MSTWinter Weather AdvisoryUNR22 hr
Mar 2, 3:14 AM MSTWind Chill WarningUNR56 hr
Mar 2, 3:14 AM MSTWind Chill AdvisoryUNR35 hr
Mar 4, 3:48 AM MSTWind Chill AdvisoryUNR7 hr
Mar 5, 2:10 PM MSTWinter Storm WatchUNR12 hr
Mar 6, 2:13 AM MSTWinter Storm WarningUNR27 hr
Mar 6, 2:13 AM MSTWinter Weather AdvisoryUNR31 hr
Mar 7, 7:10 AM MSTWinter Storm WatchUNR20 hr
Mar 8, 3:19 AM MSTWinter Weather AdvisoryUNR41 hr
Mar 11, 2:48 AM MDTWinter Storm WatchUNR36 hr
Mar 12, 3:09 AM MDTBlizzard WarningUNR63 hr
Mar 12, 3:09 AM MDTWinter Storm WarningUNR55 hr
Mar 12, 9:53 PM MDTAreal Flood AdvisoryUNR12 hr
Mar 13, 3:59 AM MDTMesoscale DiscussionSPC4 hr
Mar 13, 6:20 AM MDTMesoscale DiscussionSPC4 hr
Mar 13, 1:37 PM MDTMesoscale DiscussionSPC4 hr
Mar 13, 5:26 PM MDTMesoscale DiscussionSPC6 hr
Mar 14, 2:35 AM MDTWinter Weather AdvisoryUNR15 hr
Mar 24, 2:53 AM MDTDense Fog AdvisoryUNR33 hr
Mar 26, 12:34 AM MDTDense Fog AdvisoryUNR9 hr
Apr 7, 3:01 PM MDTWinter Storm WatchUNR36 hr
Apr 9, 3:08 AM MDTBlizzard WarningUNR64 hr
Apr 9, 3:08 AM MDTWinter Storm WarningUNR63 hr
Apr 11, 5:52 PM MDTWinter Weather AdvisoryUNR12 hr
Apr 18, 3:06 AM MDTWind AdvisoryUNR15 hr
Apr 28, 1:56 PM MDTWinter Storm WatchUNR24 hr
Apr 29, 2:10 PM MDTWinter Storm WarningUNR45 hr
Apr 29, 2:10 PM MDTWinter Weather AdvisoryUNR45 hr
May 1, 11:30 AM MDTWinter Weather AdvisoryUNR4 hr
May 6, 5:03 PM MDTDense Fog AdvisoryUNR16 hr
May 7, 2:35 PM MDTDense Fog AdvisoryUNR18 hr
May 7, 2:43 PM MDTWinter Weather AdvisoryUNR27 hr
May 11, 1:38 PM MDTFrost AdvisoryUNR17 hr
May 14, 5:00 PM MDTMesoscale DiscussionSPC90 min
May 14, 5:18 PM MDTSpecial Weather StatementUNR27 min
May 14, 6:41 PM MDTSpecial Weather StatementUNR49 min
May 19, 2:45 AM MDTWinter Storm WatchUNR24 hr
May 19, 2:47 PM MDTFlood WatchUNR72 hr
May 20, 2:56 AM MDTWinter Storm WarningUNR54 hr
May 21, 2:08 PM MDTAreal Flood WarningUNR71 hr
May 24, 10:53 PM MDTAreal Flood AdvisoryUNR11 hr
May 25, 2:54 AM MDTFlood WatchUNR4 days
May 26, 4:23 AM MDTSpecial Weather StatementUNR52 min
May 26, 2:07 PM MDTMesoscale DiscussionSPC113 min
May 27, 8:30 AM MDTDense Fog AdvisoryUNR6 hr
May 28, 8:14 AM MDTAreal Flood WarningUNR3 days
May 31, 7:56 AM MDTAreal Flood AdvisoryUNR7 days
May 31, 12:14 PM MDTSpecial Weather StatementUNR31 min
Jun 1, 2:47 PM MDTSpecial Weather StatementUNR28 min
Jun 1, 3:18 PM MDTSpecial Weather StatementUNR27 min
Jun 2, 12:58 PM MDTSevere Thunderstorm WarningUNR62 min
Jun 2, 1:28 PM MDTSevere Thunderstorm WarningUNR32 min
Jun 2, 1:58 PM MDTSevere Thunderstorm WarningUNR62 min
Jun 2, 2:26 PM MDTSevere Thunderstorm WarningUNR20 min
Jun 2, 2:56 PM MDTSevere Thunderstorm WarningUNR64 min
Jun 2, 3:37 PM MDTMesoscale DiscussionSPC53 min
Jun 4, 11:44 AM MDTSpecial Weather StatementUNR16 min
Jun 5, 12:38 PM MDTMesoscale DiscussionSPC2 hr
Jun 5, 8:35 PM MDTSpecial Weather StatementUNR25 min
Jun 7, 2:54 PM MDTMesoscale DiscussionSPC3 hr
Jun 7, 3:45 PM MDTSevere Thunderstorm WatchSPC6 hr
Jun 7, 5:16 PM MDTSevere Thunderstorm WarningUNR22 min
Jun 7, 5:47 PM MDTSpecial Weather StatementUNR28 min
Jun 14, 11:57 AM MDTSpecial Weather StatementUNR18 min
Jun 17, 12:04 PM MDTMesoscale DiscussionSPC86 min
Jun 19, 2:53 PM MDTSpecial Weather StatementUNR22 min
Jun 19, 4:00 PM MDTMesoscale DiscussionSPC2 hr
Jun 19, 8:02 PM MDTMesoscale DiscussionSPC118 min
Jun 23, 2:32 PM MDTSpecial Weather StatementUNR28 min
Jun 24, 8:58 PM MDTSpecial Weather StatementUNR32 min
Jun 24, 9:10 PM MDTSpecial Weather StatementUNR20 min
Jun 24, 9:31 PM MDTSpecial Weather StatementUNR29 min
Jun 25, 4:19 PM MDTMesoscale DiscussionSPC2 hr
Jun 26, 2:36 PM MDTMesoscale DiscussionSPC2 hr
Jun 26, 4:37 PM MDTSevere Thunderstorm WatchSPC6 hr
Jun 26, 6:01 PM MDTMesoscale DiscussionSPC119 min
Jun 26, 7:50 PM MDTSevere Thunderstorm WarningUNR55 min
Jun 30, 11:23 AM MDTMesoscale DiscussionSPC97 min
Jun 30, 11:54 AM MDTSevere Thunderstorm WatchSPC5 hr
Jun 30, 2:20 PM MDTSpecial Weather StatementUNR25 min
Jun 30, 2:35 PM MDTMesoscale DiscussionSPC85 min
Jun 30, 3:01 PM MDTSevere Thunderstorm WarningUNR26 min
Jul 1, 2:32 AM MDTSpecial Weather StatementUNR13 min
Jul 2, 9:06 PM MDTSpecial Weather StatementUNR24 min
Jul 3, 12:43 PM MDTMesoscale DiscussionSPC2 hr
Jul 3, 1:29 PM MDTSevere Thunderstorm WatchSPC9 hr
Jul 3, 3:59 PM MDTSpecial Weather StatementUNR46 min
Jul 3, 4:10 PM MDTMesoscale DiscussionSPC2 hr
Jul 3, 4:19 PM MDTSevere Thunderstorm WarningUNR41 min
Jul 3, 4:26 PM MDTTornado WarningUNR34 min
Jul 3, 4:56 PM MDTTornado WarningUNR49 min
Jul 3, 5:42 PM MDTTornado WarningUNR33 min
Jul 3, 5:58 PM MDTSevere Thunderstorm WarningUNR62 min
Jul 3, 6:10 PM MDTSevere Thunderstorm WarningUNR35 min
Jul 3, 6:14 PM MDTAreal Flood WarningUNR19 hr
Jul 3, 6:31 PM MDTSevere Thunderstorm WarningUNR59 min
Jul 3, 6:39 PM MDTSevere Thunderstorm WarningUNR66 min
Jul 3, 7:24 PM MDTSpecial Weather StatementUNR51 min
Jul 3, 9:26 PM MDTMesoscale DiscussionSPC64 min
Jul 3, 10:59 PM MDTSevere Thunderstorm WarningUNR61 min
Jul 4, 1:56 PM MDTMesoscale DiscussionSPC2 hr
Jul 4, 2:31 PM MDTSevere Thunderstorm WatchSPC8 hr
Jul 4, 7:28 PM MDTMesoscale DiscussionSPC92 min
Jul 4, 8:02 PM MDTSevere Thunderstorm WarningUNR43 min
Jul 4, 8:20 PM MDTTornado WarningUNR25 min
Jul 4, 8:38 PM MDTSevere Thunderstorm WarningUNR67 min
Jul 4, 8:53 PM MDTAreal Flood WarningUNR24 hr
Jul 4, 9:54 PM MDTSpecial Weather StatementUNR51 min
Jul 5, 12:44 PM MDTMesoscale DiscussionSPC61 min
Jul 5, 12:46 PM MDTFlash Flood WatchUNR7 hr
Jul 5, 1:15 PM MDTSevere Thunderstorm WatchSPC8 hr
Jul 5, 5:04 PM MDTSpecial Weather StatementUNR41 min
Jul 5, 5:19 PM MDTMesoscale DiscussionSPC116 min
Jul 5, 6:11 PM MDTSpecial Weather StatementUNR49 min
Jul 5, 6:42 PM MDTAreal Flood WarningUNR36 hr
Jul 8, 5:06 PM MDTSevere Thunderstorm WarningUNR39 min
Jul 8, 5:41 PM MDTSevere Thunderstorm WarningUNR33 min
Jul 8, 5:45 PM MDTSpecial Weather StatementUNR30 min
Jul 9, 12:37 PM MDTMesoscale DiscussionSPC2 hr
Jul 9, 1:31 PM MDTSevere Thunderstorm WatchSPC6 hr
Jul 9, 4:42 PM MDTMesoscale DiscussionSPC2 hr
Jul 12, 8:58 PM MDTSpecial Weather StatementUNR32 min
Jul 14, 1:49 PM MDTMesoscale DiscussionSPC2 hr
Jul 14, 2:19 PM MDTSevere Thunderstorm WarningUNR41 min
Jul 15, 2:20 PM MDTMesoscale DiscussionSPC2 hr
Jul 15, 2:54 PM MDTSevere Thunderstorm WatchSPC7 hr
Jul 15, 5:42 PM MDTMesoscale DiscussionSPC93 min
Jul 15, 7:46 PM MDTSpecial Weather StatementUNR29 min
Jul 16, 1:26 PM MDTMesoscale DiscussionSPC94 min
Jul 16, 2:50 PM MDTSevere Thunderstorm WatchSPC9 hr
Jul 16, 6:00 PM MDTMesoscale DiscussionSPC90 min
Jul 16, 6:11 PM MDTSevere Thunderstorm WarningUNR49 min
Jul 16, 6:56 PM MDTSevere Thunderstorm WarningUNR49 min
Jul 17, 3:04 PM MDTMesoscale DiscussionSPC2 hr
Jul 17, 4:38 PM MDTSevere Thunderstorm WatchSPC6 hr
Jul 17, 6:46 PM MDTMesoscale DiscussionSPC119 min
Jul 19, 9:33 PM MDTMesoscale DiscussionSPC87 min
Jul 23, 3:57 PM MDTSevere Thunderstorm WarningUNR63 min
Jul 23, 5:38 PM MDTSpecial Weather StatementUNR67 min
Jul 23, 5:43 PM MDTSevere Thunderstorm WarningUNR22 min
Jul 23, 6:18 PM MDTSpecial Weather StatementUNR57 min
Jul 24, 6:46 PM MDTSpecial Weather StatementUNR29 min
Jul 24, 6:53 PM MDTSevere Thunderstorm WarningUNR67 min
Jul 24, 9:48 PM MDTSpecial Weather StatementUNR42 min
Jul 27, 1:54 AM MDTFlash Flood WatchUNR24 hr
Jul 27, 1:50 PM MDTMesoscale DiscussionSPC2 hr
Jul 30, 2:55 PM MDTMesoscale DiscussionSPC2 hr
Jul 30, 5:08 PM MDTSevere Thunderstorm WatchSPC7 hr
Jul 30, 5:13 PM MDTSevere Thunderstorm WarningUNR62 min
Jul 30, 5:56 PM MDTSevere Thunderstorm WarningUNR49 min
Jul 30, 6:06 PM MDTSpecial Weather StatementUNR24 min
Jul 30, 6:41 PM MDTSpecial Weather StatementUNR34 min
Jul 31, 1:41 AM MDTSpecial Weather StatementUNR64 min
Jul 31, 2:03 AM MDTSevere Thunderstorm WarningUNR57 min
Jul 31, 1:50 PM MDTFlash Flood WatchUNR38 hr
Jul 31, 2:49 PM MDTMesoscale DiscussionSPC2 hr
Jul 31, 9:59 PM MDTSpecial Weather StatementUNR31 min
Aug 2, 1:12 PM MDTSpecial Weather StatementUNR33 min
Aug 2, 1:45 PM MDTSpecial Weather StatementUNR45 min
Aug 2, 2:27 PM MDTSpecial Weather StatementUNR33 min
Aug 2, 2:43 PM MDTFlash Flood WarningUNR3 hr
Aug 2, 2:56 PM MDTSpecial Weather StatementUNR49 min
Aug 2, 5:46 PM MDTAreal Flood WarningUNR18 hr
Aug 3, 1:37 PM MDTSpecial Weather StatementUNR23 min
Aug 3, 2:22 PM MDTMesoscale DiscussionSPC2 hr
Aug 3, 3:11 PM MDTSpecial Weather StatementUNR34 min
Aug 3, 3:47 PM MDTSpecial Weather StatementUNR28 min
Aug 3, 4:15 PM MDTSpecial Weather StatementUNR30 min
Aug 4, 2:38 PM MDTSevere Thunderstorm WarningUNR52 min
Aug 5, 2:29 PM MDTSpecial Weather StatementUNR31 min
Aug 5, 2:46 PM MDTSevere Thunderstorm WarningUNR29 min
Aug 5, 3:07 PM MDTSpecial Weather StatementUNR23 min
Aug 5, 3:14 PM MDTSevere Thunderstorm WarningUNR31 min
Aug 5, 3:30 PM MDTFlash Flood WarningUNR3 hr
Aug 5, 3:47 PM MDTSevere Thunderstorm WarningUNR43 min
Aug 5, 4:26 PM MDTSpecial Weather StatementUNR19 min
Aug 7, 6:53 PM MDTSpecial Weather StatementUNR37 min
Aug 9, 2:18 AM MDTSpecial Weather StatementUNR87 min
Aug 10, 1:34 PM MDTSpecial Weather StatementUNR41 min
Aug 10, 1:56 PM MDTMesoscale DiscussionSPC94 min
Aug 10, 2:44 PM MDTSpecial Weather StatementUNR31 min
Aug 10, 3:04 PM MDTSevere Thunderstorm WatchSPC7 hr
Aug 10, 3:15 PM MDTSpecial Weather StatementUNR45 min
Aug 10, 3:17 PM MDTSevere Thunderstorm WarningUNR41 min
Aug 10, 4:53 PM MDTMesoscale DiscussionSPC2 hr
Aug 10, 5:30 PM MDTSpecial Weather StatementUNR30 min
Aug 10, 6:06 PM MDTSpecial Weather StatementUNR24 min
Aug 10, 6:13 PM MDTSevere Thunderstorm WarningUNR62 min
Aug 10, 6:27 PM MDTFlash Flood WarningUNR93 min
Aug 10, 7:02 PM MDTSpecial Weather StatementUNR28 min
Aug 10, 8:02 PM MDTAreal Flood WarningUNR9 hr
Aug 10, 8:34 PM MDTMesoscale DiscussionSPC86 min
Aug 11, 3:15 AM MDTFlash Flood WatchUNR25 hr
Aug 11, 1:59 PM MDTTornado WatchSPC10 hr
Aug 11, 5:02 PM MDTSevere Thunderstorm WarningUNR58 min
Aug 11, 5:39 PM MDTAreal Flood AdvisoryUNR3 hr
Aug 11, 5:54 PM MDTMesoscale DiscussionSPC66 min
Aug 11, 5:55 PM MDTSevere Thunderstorm WarningUNR35 min
Aug 11, 6:34 PM MDTAreal Flood AdvisoryUNR3 hr
Aug 14, 11:44 AM MDTSpecial Weather StatementUNR31 min
Aug 14, 12:21 PM MDTSpecial Weather StatementUNR24 min
Aug 14, 12:39 PM MDTSevere Thunderstorm WarningUNR28 min
Aug 14, 8:14 PM MDTMesoscale DiscussionSPC91 min
Aug 14, 10:56 PM MDTMesoscale DiscussionSPC94 min
Aug 16, 5:21 PM MDTSpecial Weather StatementUNR24 min
Aug 16, 6:12 PM MDTSevere Thunderstorm WarningUNR33 min
Aug 16, 6:39 PM MDTSevere Thunderstorm WarningUNR51 min
Aug 16, 7:12 PM MDTSevere Thunderstorm WarningUNR48 min
Aug 17, 11:31 AM MDTMesoscale DiscussionSPC119 min
Aug 17, 12:55 PM MDTSpecial Weather StatementUNR35 min
Aug 17, 1:19 PM MDTSevere Thunderstorm WatchSPC7 hr
Aug 17, 2:10 PM MDTSpecial Weather StatementUNR35 min
Aug 17, 2:12 PM MDTSevere Thunderstorm WarningUNR63 min
Aug 17, 3:03 PM MDTSevere Thunderstorm WarningUNR42 min
Aug 23, 2:58 PM MDTSevere Thunderstorm WatchSPC7 hr
Aug 25, 6:15 PM MDTMesoscale DiscussionSPC2 hr
Aug 25, 6:33 PM MDTSevere Thunderstorm WatchSPC6 hr
Aug 25, 7:55 PM MDTSevere Thunderstorm WarningUNR65 min
Aug 25, 8:19 PM MDTSpecial Weather StatementUNR41 min
Aug 25, 8:49 PM MDTMesoscale DiscussionSPC116 min
Sep 1, 4:09 PM MDTMesoscale DiscussionSPC2 hr
Sep 10, 1:53 PM MDTTornado WatchSPC7 hr
Sep 17, 3:48 PM MDTSpecial Weather StatementUNR27 min
Sep 20, 2:07 PM MDTMesoscale DiscussionSPC113 min
Sep 20, 4:02 PM MDTSevere Thunderstorm WatchSPC9 hr
Sep 20, 6:53 PM MDTMesoscale DiscussionSPC2 hr
Sep 20, 7:58 PM MDTSevere Thunderstorm WarningUNR62 min
Sep 20, 9:39 PM MDTSpecial Weather StatementUNR36 min
Sep 29, 7:38 PM MDTMesoscale DiscussionSPC3 hr
Oct 2, 2:08 AM MDTFreeze WatchUNR12 hr
Oct 2, 1:54 PM MDTFreeze WarningUNR19 hr
Oct 7, 3:03 PM MDTWinter Storm WatchUNR44 hr
Oct 8, 3:38 PM MDTWinter Storm WarningUNR53 hr
Oct 9, 11:27 AM MDTWinter Weather AdvisoryUNR50 hr
Oct 9, 10:07 PM MDTMesoscale DiscussionSPC6 hr
Oct 16, 3:02 AM MDTFire Weather WatchUNR11 hr
Oct 16, 1:42 PM MDTRed Flag WarningUNR30 hr
Oct 19, 3:39 AM MDTHigh Wind WatchUNR24 hr
Oct 19, 5:40 PM MDTWinter Storm WarningUNR30 hr
Oct 19, 5:40 PM MDTWinter Weather AdvisoryUNR28 hr
Oct 20, 3:25 AM MDTWind AdvisoryUNR18 hr
Oct 26, 2:36 AM MDTWinter Weather AdvisoryUNR27 hr
Oct 26, 2:38 AM MDTWind AdvisoryUNR15 hr
Nov 9, 2:53 AM MSTWinter Weather AdvisoryUNR46 hr
Nov 18, 1:28 AM MSTWind AdvisoryUNR14 hr
Nov 20, 7:59 AM MSTWind AdvisoryUNR10 hr
Nov 26, 1:26 PM MSTWinter Storm WatchUNR61 hr
Nov 28, 2:17 AM MSTBlizzard WarningUNR70 hr
Nov 28, 2:17 AM MSTWinter Storm WarningUNR3 days
Nov 30, 1:48 AM MSTMesoscale DiscussionSPC6 hr
Nov 30, 7:17 PM MSTWinter Weather AdvisoryUNR13 hr
Dec 14, 6:13 AM MSTFreezing Fog AdvisoryUNR7 hr
Dec 21, 12:27 PM MSTWind AdvisoryUNR22 hr
Dec 26, 2:34 PM MSTWinter Storm WatchUNR23 hr
Dec 27, 2:03 PM MSTWinter Weather AdvisoryUNR52 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 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.