Alert archive / South Dakota / Custer County

Weather alerts in Custer County, South Dakota, 2023

250 weather alerts in 2023, 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 2023. Tap one for its archive.

Alerts
250
Warnings
81
Watches
29
Advisories
45
Busiest month
July65 alerts
Busiest day
June 21, 202311 alerts

Over time

By month

Warning verification

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

Custer County, 2023

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings665024%5186%28 min
Flash flood warnings110%1100%128 min

Each office's whole area, 2023

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Rapid City, SD: tornado warnings6267%560%18 min
NWS Rapid City, SD: severe thunderstorm warnings33123629%53282%24 min
NWS Rapid City, SD: flash flood warnings11555%1292%78 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 1, 1:53 AM MSTWinter Storm WarningUNR59 hr
Jan 3, 1:10 AM MSTDense Fog AdvisoryUNR10 hr
Jan 3, 8:31 PM MSTDense Fog AdvisoryUNR13 hr
Jan 17, 3:37 AM MSTDense Fog AdvisoryUNR8 hr
Jan 17, 5:09 PM MSTDense Fog AdvisoryUNR18 hr
Jan 25, 1:49 PM MSTWinter Storm WatchUNR13 hr
Jan 26, 2:59 AM MSTWinter Storm WatchUNR23 hr
Jan 26, 2:59 AM MSTWinter Weather AdvisoryUNR18 hr
Jan 26, 8:30 PM MSTWinter Weather AdvisoryUNR49 hr
Jan 29, 12:35 PM MSTWind Chill AdvisoryUNR22 hr
Jan 30, 1:45 PM MSTWind Chill AdvisoryUNR19 hr
Feb 5, 12:55 PM MSTWinter Weather AdvisoryUNR26 hr
Feb 8, 1:41 AM MSTHigh Wind WatchUNR12 hr
Feb 8, 1:37 PM MSTWind AdvisoryUNR19 hr
Feb 13, 2:41 AM MSTWinter Storm WatchUNR11 hr
Feb 13, 2:41 AM MSTWinter Weather AdvisoryUNR50 hr
Feb 13, 1:39 PM MSTWind AdvisoryUNR33 hr
Feb 19, 1:00 PM MSTWinter Storm WatchUNR25 hr
Feb 20, 1:55 PM MSTWinter Storm WarningUNR63 hr
Feb 23, 12:44 AM MSTWind Chill AdvisoryUNR10 hr
Feb 23, 1:48 PM MSTWind Chill AdvisoryUNR19 hr
Feb 27, 1:29 PM MSTWind AdvisoryUNR33 hr
Mar 2, 1:03 PM MSTWinter Weather AdvisoryUNR40 hr
Mar 6, 2:54 AM MSTWinter Weather AdvisoryUNR39 hr
Mar 6, 1:43 PM MSTWinter Storm WarningUNR20 hr
Mar 7, 1:09 PM MSTWinter Storm WatchUNR13 hr
Mar 8, 2:19 AM MSTWinter Weather AdvisoryUNR35 hr
Mar 13, 1:31 PM MDTHigh Wind WatchUNR24 hr
Mar 15, 1:41 PM MDTWind AdvisoryUNR15 hr
Mar 17, 2:00 AM MDTWind AdvisoryUNR18 hr
Mar 21, 2:12 PM MDTWinter Weather AdvisoryUNR37 hr
Mar 27, 2:28 PM MDTWinter Weather AdvisoryUNR7 hr
Mar 30, 2:14 PM MDTWinter Storm WarningUNR33 hr
Mar 30, 2:14 PM MDTWinter Weather AdvisoryUNR28 hr
Apr 1, 2:24 PM MDTWinter Storm WatchUNR24 hr
Apr 2, 2:03 PM MDTBlizzard WarningUNR59 hr
Apr 2, 2:03 PM MDTWinter Storm WarningUNR59 hr
Apr 4, 12:41 AM MDTMesoscale DiscussionSPC4 hr
Apr 4, 1:57 AM MDTWinter Weather AdvisoryUNR34 hr
Apr 18, 3:15 AM MDTHigh Wind WatchUNR10 hr
Apr 18, 12:58 PM MDTWind AdvisoryUNR31 hr
Apr 18, 4:46 PM MDTMesoscale DiscussionSPC2 hr
Apr 18, 6:20 PM MDTSpecial Weather StatementUNR25 min
Apr 18, 6:51 PM MDTSpecial Weather StatementUNR24 min
Apr 18, 7:26 PM MDTMesoscale DiscussionSPC64 min
Apr 20, 2:39 AM MDTWind AdvisoryUNR40 hr
Apr 27, 2:12 AM MDTWind AdvisoryUNR22 hr
May 7, 1:52 PM MDTMesoscale DiscussionSPC3 hr
May 10, 2:02 PM MDTMesoscale DiscussionSPC88 min
May 10, 10:27 PM MDTSpecial Weather StatementUNR48 min
May 10, 10:37 PM MDTSevere Thunderstorm WarningUNR38 min
May 12, 1:57 AM MDTWind AdvisoryUNR19 hr
May 16, 3:18 PM MDTSpecial Weather StatementUNR27 min
May 17, 11:37 AM MDTSpecial Weather StatementUNR38 min
May 17, 11:52 AM MDTMesoscale DiscussionSPC113 min
May 26, 4:26 PM MDTSevere Thunderstorm WatchSPC6 hr
May 27, 2:01 PM MDTSevere Thunderstorm WatchSPC7 hr
May 27, 4:48 PM MDTMesoscale DiscussionSPC87 min
May 27, 5:46 PM MDTSevere Thunderstorm WarningUNR44 min
May 27, 6:31 PM MDTSpecial Weather StatementUNR44 min
May 28, 2:21 PM MDTSpecial Weather StatementUNR24 min
May 28, 2:48 PM MDTSpecial Weather StatementUNR42 min
May 28, 2:57 PM MDTSpecial Weather StatementUNR33 min
May 28, 4:23 PM MDTSpecial Weather StatementUNR37 min
May 28, 4:54 PM MDTSpecial Weather StatementUNR36 min
May 29, 12:24 PM MDTMesoscale DiscussionSPC3 hr
May 29, 1:57 PM MDTSpecial Weather StatementUNR33 min
May 29, 2:21 PM MDTSevere Thunderstorm WarningUNR54 min
May 30, 1:50 PM MDTSpecial Weather StatementUNR40 min
May 30, 4:56 PM MDTSevere Thunderstorm WarningUNR49 min
May 31, 2:29 PM MDTSpecial Weather StatementUNR31 min
May 31, 2:39 PM MDTMesoscale DiscussionSPC3 hr
May 31, 2:45 PM MDTSevere Thunderstorm WarningUNR45 min
May 31, 3:12 PM MDTSevere Thunderstorm Warning Considerable damage threatUNR63 min
May 31, 4:21 PM MDTSpecial Weather StatementUNR24 min
May 31, 4:28 PM MDTSpecial Weather StatementUNR32 min
May 31, 5:27 PM MDTSpecial Weather StatementUNR33 min
Jun 20, 9:58 PM MDTSevere Thunderstorm WarningUNR47 min
Jun 20, 10:43 PM MDTSpecial Weather StatementUNR32 min
Jun 20, 10:50 PM MDTMesoscale DiscussionSPC115 min
Jun 20, 11:02 PM MDTSpecial Weather StatementUNR28 min
Jun 20, 11:07 PM MDTSpecial Weather StatementUNR23 min
Jun 20, 11:31 PM MDTSpecial Weather StatementUNR29 min
Jun 21, 12:21 AM MDTSpecial Weather StatementUNR24 min
Jun 21, 12:34 AM MDTSevere Thunderstorm WarningUNR41 min
Jun 21, 12:54 AM MDTSevere Thunderstorm Warning Considerable damage threatUNR51 min
Jun 21, 1:38 AM MDTSevere Thunderstorm WarningUNR26 min
Jun 21, 1:59 AM MDTSpecial Weather StatementUNR31 min
Jun 23, 1:28 PM MDTMesoscale DiscussionSPC2 hr
Jun 23, 4:55 PM MDTMesoscale DiscussionSPC2 hr
Jun 23, 5:17 PM MDTTornado WatchSPC8 hr
Jun 23, 7:26 PM MDTSevere Thunderstorm WarningUNR49 min
Jun 23, 7:33 PM MDTSevere Thunderstorm WarningUNR42 min
Jun 23, 8:13 PM MDTSevere Thunderstorm WarningUNR23 min
Jun 26, 2:24 PM MDTMesoscale DiscussionSPC3 hr
Jun 27, 1:11 AM MDTSevere Thunderstorm WarningUNR64 min
Jun 27, 2:02 AM MDTSevere Thunderstorm Warning Considerable damage threatUNR43 min
Jun 27, 2:34 AM MDTSevere Thunderstorm Warning Considerable damage threatUNR56 min
Jun 27, 1:21 PM MDTSevere Thunderstorm WatchSPC9 hr
Jun 27, 4:32 PM MDTMesoscale DiscussionSPC88 min
Jun 28, 1:21 PM MDTMesoscale DiscussionSPC84 min
Jun 28, 1:56 PM MDTSevere Thunderstorm WatchSPC7 hr
Jun 28, 3:57 PM MDTSevere Thunderstorm WarningUNR59 min
Jun 28, 5:16 PM MDTMesoscale DiscussionSPC119 min
Jun 28, 5:43 PM MDTSevere Thunderstorm WarningUNR34 min
Jun 28, 7:59 PM MDTMesoscale DiscussionSPC91 min
Jun 29, 12:48 PM MDTSpecial Weather StatementUNR42 min
Jun 29, 1:30 PM MDTSevere Thunderstorm WarningUNR40 min
Jun 30, 1:02 PM MDTSpecial Weather StatementUNR43 min
Jun 30, 1:18 PM MDTSevere Thunderstorm WarningUNR42 min
Jun 30, 1:55 PM MDTAreal Flood WarningUNR4 hr
Jul 2, 3:14 PM MDTSpecial Weather StatementUNR46 min
Jul 3, 2:47 PM MDTMesoscale DiscussionSPC58 min
Jul 3, 3:03 PM MDTSevere Thunderstorm WatchSPC11 hr
Jul 3, 5:31 PM MDTSevere Thunderstorm WarningUNR59 min
Jul 3, 5:56 PM MDTMesoscale DiscussionSPC94 min
Jul 3, 6:21 PM MDTSevere Thunderstorm WarningUNR54 min
Jul 3, 6:24 PM MDTSevere Thunderstorm WarningUNR51 min
Jul 3, 6:32 PM MDTSpecial Weather StatementUNR28 min
Jul 3, 7:01 PM MDTSevere Thunderstorm WarningUNR59 min
Jul 3, 7:25 PM MDTSevere Thunderstorm WarningUNR37 min
Jul 3, 7:42 PM MDTSevere Thunderstorm WarningUNR20 min
Jul 3, 8:05 PM MDTSpecial Weather StatementUNR25 min
Jul 3, 8:37 PM MDTSevere Thunderstorm Warning Considerable damage threatUNR53 min
Jul 3, 9:30 PM MDTSevere Thunderstorm WarningUNR60 min
Jul 3, 9:38 PM MDTMesoscale DiscussionSPC97 min
Jul 6, 1:53 PM MDTMesoscale DiscussionSPC2 hr
Jul 6, 6:20 PM MDTSpecial Weather StatementUNR40 min
Jul 10, 3:35 PM MDTSpecial Weather StatementUNR25 min
Jul 10, 3:55 PM MDTSpecial Weather StatementUNR35 min
Jul 10, 4:02 PM MDTSevere Thunderstorm WarningUNR58 min
Jul 11, 1:04 PM MDTMesoscale DiscussionSPC116 min
Jul 11, 2:43 PM MDTSevere Thunderstorm WatchSPC8 hr
Jul 11, 6:08 PM MDTSevere Thunderstorm WarningUNR24 min
Jul 11, 6:15 PM MDTSevere Thunderstorm WarningUNR13 min
Jul 11, 6:27 PM MDTMesoscale DiscussionSPC93 min
Jul 11, 9:59 PM MDTSevere Thunderstorm WarningUNR46 min
Jul 11, 10:33 PM MDTSevere Thunderstorm Warning Considerable damage threatUNR57 min
Jul 11, 10:43 PM MDTSevere Thunderstorm WarningUNR29 min
Jul 11, 11:10 PM MDTSevere Thunderstorm WatchSPC7 hr
Jul 12, 12:29 AM MDTSpecial Weather StatementUNR31 min
Jul 12, 1:04 AM MDTSpecial Weather StatementUNR41 min
Jul 12, 1:44 AM MDTSpecial Weather StatementUNR31 min
Jul 13, 1:23 PM MDTMesoscale DiscussionSPC2 hr
Jul 13, 2:31 PM MDTSpecial Weather StatementUNR44 min
Jul 14, 12:31 AM MDTSpecial Weather StatementUNR29 min
Jul 16, 2:31 PM MDTMesoscale DiscussionSPC2 hr
Jul 17, 4:48 PM MDTMesoscale DiscussionSPC57 min
Jul 17, 5:17 PM MDTSevere Thunderstorm WatchSPC7 hr
Jul 17, 7:38 PM MDTMesoscale DiscussionSPC2 hr
Jul 17, 7:39 PM MDTSevere Thunderstorm WarningUNR66 min
Jul 17, 8:28 PM MDTSevere Thunderstorm Warning Considerable damage threatUNR62 min
Jul 17, 9:31 PM MDTSevere Thunderstorm WarningUNR43 min
Jul 18, 12:15 PM MDTMesoscale DiscussionSPC3 hr
Jul 18, 10:45 PM MDTSevere Thunderstorm WarningUNR45 min
Jul 18, 11:16 PM MDTSpecial Weather StatementUNR59 min
Jul 21, 3:02 PM MDTSpecial Weather StatementUNR28 min
Jul 21, 3:57 PM MDTSpecial Weather StatementUNR33 min
Jul 21, 4:25 PM MDTSevere Thunderstorm WarningUNR29 min
Jul 21, 7:22 PM MDTSpecial Weather StatementUNR23 min
Jul 23, 3:08 PM MDTSpecial Weather StatementUNR52 min
Jul 24, 9:20 PM MDTSevere Thunderstorm WarningUNR55 min
Jul 24, 10:12 PM MDTSevere Thunderstorm WarningUNR63 min
Jul 27, 4:30 PM MDTSpecial Weather StatementUNR30 min
Jul 28, 1:27 PM MDTSevere Thunderstorm WarningUNR27 min
Jul 28, 11:15 PM MDTSevere Thunderstorm WarningUNR60 min
Jul 30, 1:25 PM MDTMesoscale DiscussionSPC2 hr
Jul 30, 1:53 PM MDTSevere Thunderstorm Warning Considerable damage threatUNR50 min
Jul 30, 1:56 PM MDTSevere Thunderstorm WatchSPC10 hr
Jul 30, 7:12 PM MDTSevere Thunderstorm Warning Considerable damage threatUNR78 min
Jul 30, 7:42 PM MDTSevere Thunderstorm Warning Considerable damage threatUNR63 min
Jul 30, 7:50 PM MDTSpecial Weather StatementUNR25 min
Jul 30, 8:43 PM MDTSevere Thunderstorm Warning Considerable damage threatUNR62 min
Jul 30, 8:44 PM MDTSpecial Weather StatementUNR31 min
Jul 30, 9:21 PM MDTSevere Thunderstorm Warning Considerable damage threatUNR54 min
Jul 31, 2:47 PM MDTMesoscale DiscussionSPC88 min
Aug 2, 2:03 PM MDTFlood WatchUNR72 hr
Aug 3, 7:01 PM MDTSevere Thunderstorm WarningUNR44 min
Aug 8, 4:34 PM MDTSevere Thunderstorm WarningUNR41 min
Aug 12, 1:56 PM MDTMesoscale DiscussionSPC2 hr
Aug 12, 2:41 PM MDTSevere Thunderstorm WatchSPC6 hr
Aug 12, 2:41 PM MDTSevere Thunderstorm Warning Considerable damage threatUNR49 min
Aug 12, 3:23 PM MDTSevere Thunderstorm Warning Considerable damage threatUNR67 min
Aug 12, 3:34 PM MDTSevere Thunderstorm WarningUNR41 min
Aug 12, 4:21 PM MDTSevere Thunderstorm Warning Considerable damage threatUNR69 min
Aug 12, 5:00 PM MDTSpecial Weather StatementUNR30 min
Aug 12, 5:13 PM MDTSpecial Weather StatementUNR32 min
Aug 12, 5:18 PM MDTSevere Thunderstorm WarningUNR57 min
Aug 12, 6:07 PM MDTSevere Thunderstorm WarningUNR39 min
Aug 12, 6:08 PM MDTSevere Thunderstorm WarningUNR67 min
Aug 12, 6:51 PM MDTSpecial Weather StatementUNR39 min
Aug 12, 6:58 PM MDTSevere Thunderstorm WarningUNR22 min
Aug 12, 8:10 PM MDTMesoscale DiscussionSPC2 hr
Aug 12, 8:15 PM MDTSpecial Weather StatementUNR45 min
Aug 12, 8:44 PM MDTSpecial Weather StatementUNR46 min
Aug 12, 11:05 PM MDTSpecial Weather StatementUNR40 min
Aug 12, 11:20 PM MDTSevere Thunderstorm WarningUNR55 min
Aug 13, 12:17 AM MDTSpecial Weather StatementUNR43 min
Aug 17, 1:30 PM MDTHeat AdvisoryUNR30 hr
Aug 22, 7:33 PM MDTSpecial Weather StatementUNR42 min
Aug 22, 8:11 PM MDTSpecial Weather StatementUNR49 min
Aug 24, 2:41 PM MDTMesoscale DiscussionSPC2 hr
Sep 4, 12:45 PM MDTMesoscale DiscussionSPC3 hr
Sep 4, 1:55 PM MDTSevere Thunderstorm Warning Considerable damage threatUNR50 min
Sep 4, 2:00 PM MDTSevere Thunderstorm Warning Considerable damage threatUNR45 min
Sep 4, 2:05 PM MDTSevere Thunderstorm WatchSPC6 hr
Sep 5, 1:43 AM MDTWind AdvisoryUNR13 hr
Sep 8, 5:23 PM MDTSpecial Weather StatementUNR37 min
Sep 8, 5:28 PM MDTMesoscale DiscussionSPC92 min
Sep 9, 2:38 PM MDTSpecial Weather StatementUNR52 min
Sep 9, 2:58 PM MDTSevere Thunderstorm WarningUNR42 min
Sep 9, 4:19 PM MDTMesoscale DiscussionSPC86 min
Sep 9, 4:28 PM MDTSpecial Weather StatementUNR32 min
Sep 9, 6:00 PM MDTSevere Thunderstorm WatchSPC8 hr
Sep 13, 4:34 PM MDTSevere Thunderstorm WarningUNR56 min
Sep 13, 5:37 PM MDTSpecial Weather StatementUNR38 min
Sep 13, 6:36 PM MDTFlash Flood WarningUNR3 hr
Sep 13, 9:42 PM MDTAreal Flood WarningUNR12 hr
Sep 22, 12:18 PM MDTMesoscale DiscussionSPC117 min
Sep 22, 1:36 PM MDTSevere Thunderstorm WatchSPC7 hr
Oct 2, 6:35 PM MDTSevere Thunderstorm WarningUNR55 min
Oct 2, 7:25 PM MDTSevere Thunderstorm Warning Considerable damage threatUNR65 min
Oct 2, 7:30 PM MDTSevere Thunderstorm Warning Considerable damage threatUNR44 min
Oct 5, 1:46 AM MDTFreeze WatchUNR33 hr
Oct 6, 2:03 AM MDTFreeze WarningUNR30 hr
Oct 10, 2:50 AM MDTWinter Storm WatchUNR35 hr
Oct 11, 2:07 AM MDTHigh Wind WatchUNR12 hr
Oct 11, 1:38 PM MDTWinter Storm WarningUNR27 hr
Oct 11, 1:43 PM MDTWind AdvisoryUNR52 hr
Oct 12, 4:56 PM MDTWinter Weather AdvisoryUNR4 hr
Oct 17, 2:20 AM MDTWind AdvisoryUNR37 hr
Oct 17, 5:52 PM MDTHigh Wind WarningUNR3 hr
Oct 17, 6:52 PM MDTWind AdvisoryUNR20 hr
Oct 18, 5:38 AM MDTHigh Wind WarningUNR7 hr
Oct 25, 1:50 AM MDTWind AdvisoryUNR21 hr
Oct 25, 1:56 PM MDTWinter Weather AdvisoryUNR32 hr
Nov 15, 1:30 AM MSTWind AdvisoryUNR37 hr
Nov 19, 12:33 PM MSTWind AdvisoryUNR30 hr
Nov 22, 1:07 PM MSTWinter Weather AdvisoryUNR44 hr
Dec 3, 1:21 AM MSTHigh Wind WatchUNR23 hr
Dec 4, 12:19 AM MSTWind AdvisoryUNR17 hr
Dec 6, 2:05 AM MSTWind AdvisoryUNR4 days
Dec 6, 1:43 PM MSTHigh Wind WarningUNR22 hr
Dec 23, 2:41 AM MSTWind AdvisoryUNR35 hr
Dec 24, 2:08 AM MSTBlizzard WarningUNR66 hr
Dec 25, 2:05 AM MSTWinter Storm WatchUNR12 hr
Dec 25, 1:43 PM MSTWinter Weather AdvisoryUNR36 hr
Dec 26, 3:33 AM MSTMesoscale DiscussionSPC5 hr
Dec 26, 8:04 PM MSTWinter Weather AdvisoryUNR6 hr
Dec 31, 2:50 AM MSTDense Fog AdvisoryUNR10 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 archive20222024

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.