Alert archive / South Dakota / Fall River County

Weather alerts in Fall River County, South Dakota, 2013

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

Fall River County and its neighbors

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

Alerts
176
Warnings
45
Watches
28
Advisories
25
Busiest month
August39 alerts
Busiest day
July 23, 20138 alerts

Over time

By month

Warning verification

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

Fall River County, 2013

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings373019%2789%24 min
Flash flood warnings20100%0

Each office's whole area, 2013

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Rapid City, SD: tornado warnings10190%333%4 min
NWS Rapid City, SD: severe thunderstorm warnings50236328%67390%23 min
NWS Rapid City, SD: flash flood warnings24579%1493%46 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 9, 2:52 AM MSTWinter Storm WatchUNR36 hr
Jan 10, 2:56 PM MSTWinter Storm WarningUNR37 hr
Jan 11, 4:32 AM MSTWinter Weather AdvisoryUNR30 hr
Jan 11, 11:08 AM MSTMesoscale DiscussionSPC6 hr
Feb 7, 2:45 PM MSTWinter Storm WatchUNR38 hr
Feb 9, 4:30 AM MSTWinter Storm WarningUNR42 hr
Feb 9, 4:30 AM MSTWinter Weather AdvisoryUNR42 hr
Feb 12, 2:32 PM MSTWind AdvisoryUNR49 hr
Mar 3, 2:15 PM MSTWind AdvisoryUNR40 hr
Mar 16, 3:28 AM MDTHigh Wind WatchUNR24 hr
Mar 17, 3:10 AM MDTWind AdvisoryUNR33 hr
Mar 22, 3:33 PM MDTWinter Weather AdvisoryUNR11 hr
Apr 7, 2:46 AM MDTWinter Storm WatchUNR36 hr
Apr 8, 4:32 AM MDTWinter Storm WarningUNR70 hr
Apr 9, 5:46 PM MDTMesoscale DiscussionSPC5 hr
Apr 13, 3:14 PM MDTWind AdvisoryUNR29 hr
Apr 15, 3:40 AM MDTWinter Storm WatchUNR24 hr
Apr 16, 3:35 AM MDTWinter Storm WarningUNR35 hr
Apr 16, 3:35 AM MDTWinter Weather AdvisoryUNR47 hr
Apr 21, 3:51 AM MDTWinter Weather AdvisoryUNR35 hr
Apr 21, 5:03 PM MDTSpecial Weather StatementUNR42 min
May 16, 5:15 PM MDTSpecial Weather StatementCYS30 min
May 17, 2:23 PM MDTMesoscale DiscussionSPC97 min
May 17, 3:03 PM MDTSevere Thunderstorm WatchSPC9 hr
May 17, 4:22 PM MDTSevere Thunderstorm WarningUNR53 min
May 17, 5:00 PM MDTSpecial Weather StatementUNR45 min
May 17, 6:28 PM MDTMesoscale DiscussionSPC92 min
May 17, 9:26 PM MDTMesoscale DiscussionSPC64 min
May 18, 2:31 PM MDTMesoscale DiscussionSPC59 min
May 18, 2:55 PM MDTSevere Thunderstorm WatchSPC8 hr
May 18, 9:14 PM MDTMesoscale DiscussionSPC61 min
May 19, 2:05 PM MDTWind AdvisoryUNR46 hr
May 25, 11:43 AM MDTMesoscale DiscussionSPC92 min
May 25, 1:52 PM MDTTornado WatchSPC8 hr
May 26, 2:49 PM MDTMesoscale DiscussionSPC56 min
May 27, 11:36 AM MDTMesoscale DiscussionSPC54 min
May 27, 11:51 AM MDTSevere Thunderstorm WatchSPC10 hr
May 27, 3:52 PM MDTMesoscale DiscussionSPC83 min
May 27, 6:11 PM MDTMesoscale DiscussionSPC94 min
May 27, 6:22 PM MDTSevere Thunderstorm WarningUNR38 min
May 27, 6:42 PM MDTSevere Thunderstorm WarningUNR48 min
May 27, 7:27 PM MDTSevere Thunderstorm WarningUNR63 min
May 28, 2:08 PM MDTMesoscale DiscussionSPC2 hr
May 28, 3:31 PM MDTSpecial Weather StatementCYS44 min
May 28, 4:20 PM MDTSpecial Weather StatementUNR25 min
May 28, 6:52 PM MDTMesoscale DiscussionSPC113 min
May 31, 3:03 AM MDTWind AdvisoryUNR16 hr
Jun 10, 6:02 PM MDTSpecial Weather StatementUNR43 min
Jun 10, 6:23 PM MDTSpecial Weather StatementUNR22 min
Jun 11, 4:06 PM MDTMesoscale DiscussionSPC84 min
Jun 11, 6:23 PM MDTMesoscale DiscussionSPC97 min
Jun 11, 8:15 PM MDTSevere Thunderstorm WarningUNR60 min
Jun 11, 8:16 PM MDTMesoscale DiscussionSPC59 min
Jun 11, 9:49 PM MDTSevere Thunderstorm WarningUNR56 min
Jun 11, 10:40 PM MDTSevere Thunderstorm WarningUNR65 min
Jun 13, 9:05 PM MDTSpecial Weather StatementUNR25 min
Jun 14, 11:34 PM MDTSpecial Weather StatementUNR26 min
Jun 16, 12:47 PM MDTSevere Thunderstorm WarningUNR58 min
Jun 16, 1:34 PM MDTSevere Thunderstorm WarningUNR71 min
Jun 17, 4:16 PM MDTSevere Thunderstorm WarningUNR59 min
Jun 17, 6:32 PM MDTSevere Thunderstorm WarningUNR73 min
Jun 18, 6:29 PM MDTSpecial Weather StatementUNR31 min
Jun 19, 10:50 PM MDTSpecial Weather StatementUNR25 min
Jun 19, 11:57 PM MDTSpecial Weather StatementUNR48 min
Jun 21, 8:09 AM MDTSevere Thunderstorm WatchSPC7 hr
Jun 21, 11:01 AM MDTMesoscale DiscussionSPC89 min
Jun 21, 1:48 PM MDTSevere Thunderstorm WatchSPC8 hr
Jun 21, 4:42 PM MDTSevere Thunderstorm WarningUNR33 min
Jun 21, 5:09 PM MDTSevere Thunderstorm WarningUNR66 min
Jun 21, 5:58 PM MDTSevere Thunderstorm WarningUNR62 min
Jun 21, 8:39 PM MDTMesoscale DiscussionSPC36 min
Jun 22, 1:45 PM MDTMesoscale DiscussionSPC90 min
Jun 22, 2:13 PM MDTTornado WatchSPC6 hr
Jun 22, 7:03 PM MDTAreal Flood AdvisoryUNR6 hr
Jun 24, 1:21 PM MDTMesoscale DiscussionSPC114 min
Jun 24, 2:26 PM MDTSpecial Weather StatementUNR34 min
Jun 24, 2:44 PM MDTSevere Thunderstorm WarningUNR61 min
Jul 6, 7:38 PM MDTSpecial Weather StatementUNR52 min
Jul 6, 8:11 PM MDTSevere Thunderstorm WarningUNR64 min
Jul 7, 4:12 PM MDTMesoscale DiscussionSPC2 hr
Jul 7, 5:03 PM MDTSevere Thunderstorm WatchSPC6 hr
Jul 7, 8:14 PM MDTMesoscale DiscussionSPC2 hr
Jul 8, 2:19 AM MDTSevere Thunderstorm WarningUNR41 min
Jul 8, 8:42 AM MDTAreal Flood AdvisoryUNR12 hr
Jul 8, 1:51 PM MDTMesoscale DiscussionSPC54 min
Jul 8, 3:42 PM MDTMesoscale DiscussionSPC2 hr
Jul 8, 4:01 PM MDTSevere Thunderstorm WatchSPC8 hr
Jul 8, 7:42 PM MDTMesoscale DiscussionSPC2 hr
Jul 10, 4:49 PM MDTMesoscale DiscussionSPC86 min
Jul 10, 6:36 PM MDTSevere Thunderstorm WarningUNR69 min
Jul 10, 7:47 PM MDTSevere Thunderstorm WarningUNR88 min
Jul 18, 2:27 PM MDTMesoscale DiscussionSPC93 min
Jul 20, 1:06 PM MDTMesoscale DiscussionSPC2 hr
Jul 20, 2:19 PM MDTSevere Thunderstorm WarningUNR56 min
Jul 20, 4:03 PM MDTSevere Thunderstorm WatchSPC6 hr
Jul 20, 7:23 PM MDTMesoscale DiscussionSPC97 min
Jul 21, 4:27 PM MDTMesoscale DiscussionSPC63 min
Jul 22, 4:12 PM MDTMesoscale DiscussionSPC93 min
Jul 22, 5:30 PM MDTSevere Thunderstorm WatchSPC7 hr
Jul 22, 7:53 PM MDTSevere Thunderstorm WarningUNR67 min
Jul 22, 8:40 PM MDTSevere Thunderstorm WarningUNR35 min
Jul 22, 9:23 PM MDTMesoscale DiscussionSPC67 min
Jul 22, 11:34 PM MDTMesoscale DiscussionSPC56 min
Jul 23, 2:44 PM MDTSevere Thunderstorm WarningUNR61 min
Jul 23, 3:43 PM MDTSevere Thunderstorm WarningUNR62 min
Jul 23, 3:45 PM MDTMesoscale DiscussionSPC60 min
Jul 23, 4:01 PM MDTSevere Thunderstorm WarningUNR59 min
Jul 24, 12:18 PM MDTMesoscale DiscussionSPC87 min
Jul 24, 6:43 PM MDTMesoscale DiscussionSPC92 min
Jul 26, 7:44 AM MDTSpecial Weather StatementUNR46 min
Jul 29, 11:29 PM MDTSpecial Weather StatementUNR46 min
Jul 30, 5:40 PM MDTSpecial Weather StatementUNR50 min
Jul 30, 6:32 PM MDTSevere Thunderstorm WarningUNR58 min
Jul 30, 7:12 PM MDTSevere Thunderstorm WarningUNR78 min
Aug 1, 11:53 AM MDTMesoscale DiscussionSPC2 hr
Aug 1, 2:25 PM MDTMesoscale DiscussionSPC95 min
Aug 1, 2:59 PM MDTSevere Thunderstorm WatchSPC9 hr
Aug 1, 7:06 PM MDTMesoscale DiscussionSPC54 min
Aug 1, 9:14 PM MDTSevere Thunderstorm WarningUNR76 min
Aug 3, 4:23 AM MDTMesoscale DiscussionSPC97 min
Aug 3, 4:46 AM MDTSevere Thunderstorm WatchSPC5 hr
Aug 3, 6:25 PM MDTSevere Thunderstorm WatchSPC8 hr
Aug 5, 2:04 AM MDTMesoscale DiscussionSPC56 min
Aug 5, 2:14 AM MDTSevere Thunderstorm WatchSPC3 hr
Aug 5, 2:31 PM MDTMesoscale DiscussionSPC89 min
Aug 5, 6:56 PM MDTSevere Thunderstorm WatchSPC5 hr
Aug 7, 4:13 PM MDTMesoscale DiscussionSPC92 min
Aug 7, 5:02 PM MDTSevere Thunderstorm WatchSPC6 hr
Aug 7, 6:49 PM MDTMesoscale DiscussionSPC86 min
Aug 7, 7:05 PM MDTAreal Flood AdvisoryUNR3 hr
Aug 7, 7:38 PM MDTFlash Flood WarningUNR6 hr
Aug 7, 7:59 PM MDTSevere Thunderstorm WarningUNR61 min
Aug 7, 8:27 PM MDTSevere Thunderstorm WarningUNR63 min
Aug 7, 9:20 PM MDTSevere Thunderstorm WarningUNR25 min
Aug 7, 10:05 PM MDTMesoscale DiscussionSPC55 min
Aug 9, 4:24 AM MDTFlash Flood WatchUNR23 hr
Aug 10, 10:28 PM MDTMesoscale DiscussionSPC92 min
Aug 11, 2:37 PM MDTMesoscale DiscussionSPC53 min
Aug 11, 4:58 PM MDTSevere Thunderstorm WarningUNR77 min
Aug 11, 5:21 PM MDTSevere Thunderstorm WarningUNR69 min
Aug 11, 5:28 PM MDTAreal Flood AdvisoryUNR6 hr
Aug 13, 1:17 PM MDTSevere Thunderstorm WatchSPC8 hr
Aug 13, 4:45 PM MDTMesoscale DiscussionSPC90 min
Aug 13, 7:15 PM MDTSevere Thunderstorm WarningUNR60 min
Aug 13, 7:46 PM MDTFlash Flood WarningUNR6 hr
Aug 14, 1:43 AM MDTAreal Flood AdvisoryUNR11 hr
Aug 22, 1:42 PM MDTMesoscale DiscussionSPC3 hr
Aug 28, 7:44 PM MDTSpecial Weather StatementUNR31 min
Aug 28, 7:47 PM MDTSevere Thunderstorm WarningUNR58 min
Aug 28, 8:34 PM MDTSevere Thunderstorm WarningUNR56 min
Aug 30, 1:27 PM MDTMesoscale DiscussionSPC2 hr
Aug 30, 1:54 PM MDTSevere Thunderstorm WatchSPC8 hr
Aug 30, 4:14 PM MDTSevere Thunderstorm WarningUNR46 min
Sep 4, 3:57 PM MDTMesoscale DiscussionSPC2 hr
Sep 4, 7:48 PM MDTSpecial Weather StatementCYS42 min
Sep 8, 3:52 PM MDTMesoscale DiscussionSPC2 hr
Sep 8, 6:47 PM MDTSevere Thunderstorm WatchSPC6 hr
Sep 8, 8:58 PM MDTMesoscale DiscussionSPC2 hr
Sep 17, 4:43 PM MDTSpecial Weather StatementUNR32 min
Sep 18, 1:16 PM MDTMesoscale DiscussionSPC89 min
Sep 22, 4:10 PM MDTMesoscale DiscussionSPC2 hr
Sep 30, 2:28 AM MDTWind AdvisoryUNR12 hr
Oct 2, 3:52 AM MDTWinter Storm WatchUNR58 hr
Oct 3, 3:57 AM MDTWinter Storm WarningUNR62 hr
Oct 4, 7:04 AM MDTMesoscale DiscussionSPC4 hr
Oct 4, 12:43 PM MDTMesoscale DiscussionSPC6 hr
Oct 9, 3:00 PM MDTHigh Wind WatchUNR24 hr
Oct 10, 2:42 PM MDTHigh Wind WarningUNR27 hr
Oct 27, 3:17 PM MDTWinter Weather AdvisoryUNR42 hr
Oct 29, 2:01 PM MDTWinter Weather AdvisoryUNR22 hr
Nov 4, 3:04 AM MSTWinter Weather AdvisoryUNR38 hr
Nov 20, 2:56 PM MSTWinter Weather AdvisoryUNR24 hr
Dec 2, 2:10 PM MSTWinter Weather AdvisoryUNR51 hr
Dec 4, 1:53 PM MSTWind Chill AdvisoryUNR4 days
Dec 8, 3:52 AM MSTWind Chill AdvisoryUNR31 hr
Dec 18, 4:10 AM MSTWinter Weather AdvisoryUNR39 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.