Alert archive / South Dakota / Marshall County

Weather alerts in Marshall County, South Dakota, 2016

119 weather alerts in 2016, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Marshall County and its neighbors

Each county as a circle sized by its count in 2016. Tap one for its archive.

Alerts
119
Warnings
24
Watches
21
Advisories
32
Busiest month
July30 alerts
Busiest day
August 10, 201610 alerts

Over time

By month

Warning verification

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

0 of 2 tornado warnings covering Marshall County in 2016 had a tornado report inside them.

Marshall County, 2016

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings20100%0
Severe thunderstorm warnings11918%683%23 min
Flash flood warnings00

Each office's whole area, 2016

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Aberdeen, SD: tornado warnings16475%1436%8 min
NWS Aberdeen, SD: severe thunderstorm warnings29118636%36283%22 min
NWS Aberdeen, SD: flash flood warnings7357%757%36 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 3, 9:23 PM CSTDense Fog AdvisoryABR9 hr
Jan 6, 8:38 PM CSTWinter Weather AdvisoryABR17 hr
Jan 9, 3:49 AM CSTWind Chill AdvisoryABR29 hr
Jan 11, 2:42 PM CSTWind Chill AdvisoryABR19 hr
Jan 15, 3:09 AM CSTWind Chill AdvisoryABR39 hr
Jan 16, 2:55 AM CSTWind Chill WarningABR31 hr
Jan 16, 2:55 AM CSTWind Chill AdvisoryABR48 hr
Feb 5, 3:07 PM CSTBlizzard WatchABR24 hr
Feb 6, 3:36 AM CSTHigh Wind WarningABR44 hr
Feb 6, 3:05 PM CSTBlizzard WarningABR24 hr
Feb 12, 3:14 PM CSTWinter Storm WatchABR12 hr
Feb 12, 3:14 PM CSTWinter Weather AdvisoryABR42 hr
Feb 18, 2:02 PM CSTWind AdvisoryABR25 hr
Mar 4, 5:34 AM CSTFreezing Rain AdvisoryABR4 hr
Mar 5, 2:40 PM CSTWind AdvisoryABR18 hr
Mar 14, 12:38 AM CDTDense Fog AdvisoryABR11 hr
Apr 5, 3:15 AM CDTWind AdvisoryABR31 hr
Apr 6, 3:19 PM CDTWind AdvisoryABR28 hr
Apr 9, 2:42 AM CDTWind AdvisoryABR15 hr
Apr 20, 3:24 AM CDTDense Fog AdvisoryABR7 hr
Apr 24, 12:02 PM CDTSpecial Weather StatementABR13 min
May 10, 2:42 PM CDTMesoscale DiscussionSPC93 min
May 13, 3:04 AM CDTFreeze WarningABR30 hr
May 14, 11:33 AM CDTFrost AdvisoryABR21 hr
May 22, 7:33 PM CDTMesoscale DiscussionSPC87 min
May 25, 6:10 PM CDTMesoscale DiscussionSPC65 min
May 30, 2:48 PM CDTSevere Thunderstorm WatchSPC7 hr
May 30, 6:37 PM CDTMesoscale DiscussionSPC113 min
Jun 3, 1:28 PM CDTMesoscale DiscussionSPC3 hr
Jun 12, 2:30 PM CDTMesoscale DiscussionSPC90 min
Jun 12, 2:50 PM CDTSevere Thunderstorm WatchSPC7 hr
Jun 14, 2:33 PM CDTTornado WatchSPC5 hr
Jun 14, 3:11 PM CDTTornado WarningABR34 min
Jun 22, 3:13 AM CDTSevere Thunderstorm WarningABR33 min
Jul 4, 3:00 PM CDTSevere Thunderstorm WatchSPC7 hr
Jul 4, 5:35 PM CDTMesoscale DiscussionSPC85 min
Jul 4, 8:29 PM CDTMesoscale DiscussionSPC91 min
Jul 4, 9:11 PM CDTSpecial Weather StatementABR34 min
Jul 4, 9:29 PM CDTSpecial Weather StatementABR31 min
Jul 5, 5:08 PM CDTMesoscale DiscussionSPC97 min
Jul 9, 3:04 PM CDTHeat AdvisoryABR28 hr
Jul 9, 10:44 PM CDTMesoscale DiscussionSPC91 min
Jul 9, 11:36 PM CDTSevere Thunderstorm WatchSPC5 hr
Jul 10, 1:24 AM CDTSevere Thunderstorm WarningABR51 min
Jul 10, 10:16 PM CDTMesoscale DiscussionSPC89 min
Jul 10, 10:40 PM CDTSevere Thunderstorm WatchSPC6 hr
Jul 11, 12:16 AM CDTSpecial Weather StatementABR59 min
Jul 11, 4:06 AM CDTMesoscale DiscussionSPC84 min
Jul 11, 8:41 PM CDTSpecial Weather StatementABR49 min
Jul 16, 12:27 PM CDTMesoscale DiscussionSPC2 hr
Jul 16, 1:09 PM CDTSevere Thunderstorm WatchSPC7 hr
Jul 16, 3:18 PM CDTMesoscale DiscussionSPC87 min
Jul 16, 3:34 PM CDTSevere Thunderstorm WarningABR41 min
Jul 16, 4:15 PM CDTSevere Thunderstorm WarningABR45 min
Jul 16, 6:29 PM CDTSevere Thunderstorm WarningABR46 min
Jul 16, 6:57 PM CDTSevere Thunderstorm WatchSPC7 hr
Jul 16, 10:53 PM CDTMesoscale DiscussionSPC67 min
Jul 18, 3:45 AM CDTExcessive Heat WatchABR24 hr
Jul 19, 3:35 AM CDTExcessive Heat WarningABR4 days
Jul 22, 12:28 PM CDTMesoscale DiscussionSPC2 hr
Jul 23, 1:41 PM CDTMesoscale DiscussionSPC3 hr
Jul 23, 3:54 PM CDTMesoscale DiscussionSPC3 hr
Jul 26, 12:09 PM CDTMesoscale DiscussionSPC96 min
Jul 26, 11:56 PM CDTSpecial Weather StatementABR49 min
Aug 1, 3:19 PM CDTSevere Thunderstorm WatchSPC8 hr
Aug 1, 6:42 PM CDTMesoscale DiscussionSPC2 hr
Aug 1, 9:45 PM CDTMesoscale DiscussionSPC90 min
Aug 1, 9:59 PM CDTSevere Thunderstorm WarningABR13 min
Aug 1, 10:33 PM CDTSevere Thunderstorm WarningABR42 min
Aug 3, 3:39 PM CDTSevere Thunderstorm WatchSPC7 hr
Aug 3, 6:29 PM CDTMesoscale DiscussionSPC91 min
Aug 3, 10:59 PM CDTSevere Thunderstorm WatchSPC7 hr
Aug 3, 11:58 PM CDTSevere Thunderstorm WarningABR32 min
Aug 9, 9:51 PM CDTMesoscale DiscussionSPC114 min
Aug 9, 10:19 PM CDTSevere Thunderstorm WatchSPC8 hr
Aug 10, 1:05 AM CDTMesoscale DiscussionSPC55 min
Aug 10, 2:18 AM CDTSevere Thunderstorm WarningABR57 min
Aug 10, 2:40 AM CDTTornado WarningABR35 min
Aug 10, 11:19 AM CDTMesoscale DiscussionSPC2 hr
Aug 10, 1:15 PM CDTSevere Thunderstorm WatchSPC7 hr
Aug 10, 3:45 PM CDTMesoscale DiscussionSPC2 hr
Aug 10, 4:27 PM CDTSevere Thunderstorm WarningABR48 min
Aug 10, 4:33 PM CDTSevere Thunderstorm WarningABR42 min
Aug 10, 8:00 PM CDTSevere Thunderstorm WatchSPC6 hr
Aug 10, 10:50 PM CDTMesoscale DiscussionSPC85 min
Aug 16, 3:19 PM CDTMesoscale DiscussionSPC116 min
Aug 27, 1:32 PM CDTMesoscale DiscussionSPC118 min
Aug 28, 2:15 AM CDTMesoscale DiscussionSPC2 hr
Aug 28, 5:15 PM CDTMesoscale DiscussionSPC90 min
Sep 4, 4:53 PM CDTSevere Thunderstorm WatchSPC7 hr
Sep 4, 6:56 PM CDTMesoscale DiscussionSPC94 min
Sep 4, 9:16 PM CDTMesoscale DiscussionSPC59 min
Sep 7, 2:11 PM CDTMesoscale DiscussionSPC2 hr
Sep 7, 3:19 PM CDTSevere Thunderstorm WatchSPC6 hr
Sep 7, 5:44 PM CDTMesoscale DiscussionSPC61 min
Sep 7, 7:46 PM CDTSpecial Weather StatementABR44 min
Oct 5, 2:37 AM CDTWind AdvisoryABR16 hr
Oct 6, 3:06 PM CDTFreeze WarningABR19 hr
Oct 17, 12:56 AM CDTDense Fog AdvisoryABR3 hr
Nov 16, 3:39 AM CSTBlizzard WatchABR24 hr
Nov 17, 3:53 AM CSTBlizzard WarningABR38 hr
Nov 18, 12:12 PM CSTWinter Weather AdvisoryABR6 hr
Nov 21, 3:26 PM CSTWinter Weather AdvisoryABR23 hr
Nov 28, 3:38 AM CSTWinter Weather AdvisoryABR56 hr
Dec 5, 3:52 AM CSTWind AdvisoryABR41 hr
Dec 5, 4:08 AM CSTWinter Weather AdvisoryABR50 hr
Dec 10, 2:05 PM CSTWinter Weather AdvisoryABR17 hr
Dec 12, 3:50 PM CSTWind Chill AdvisoryABR18 hr
Dec 14, 2:43 AM CSTWind Chill AdvisoryABR30 hr
Dec 15, 2:49 PM CSTWinter Weather AdvisoryABR42 hr
Dec 16, 3:37 AM CSTWind Chill WarningABR56 hr
Dec 18, 11:54 AM CSTWind Chill AdvisoryABR3 hr
Dec 20, 3:22 PM CSTWind AdvisoryABR26 hr
Dec 22, 4:53 AM CSTWinter Storm WatchABR48 hr
Dec 23, 3:06 PM CSTBlizzard WarningABR72 hr
Dec 24, 4:28 AM CSTFreezing Rain AdvisoryABR41 hr
Dec 24, 9:44 PM CSTIce Storm WarningABR29 hr
Dec 25, 9:36 PM CSTHigh Wind WarningABR11 hr
Dec 26, 11:57 AM CSTWind AdvisoryABR6 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 archive20152017

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.