Alert archive / South Dakota / Sully County

Weather alerts in Sully County, South Dakota, 2016

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

Sully County and its neighbors

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

Alerts
126
Warnings
40
Watches
20
Advisories
30
Busiest month
July30 alerts
Busiest day
July 10, 20166 alerts

Over time

By month

Warning verification

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

Sully County, 2016

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings291838%989%30 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 9, 3:49 AM CSTWind Chill AdvisoryABR29 hr
Jan 16, 2:55 AM CSTWind Chill AdvisoryABR48 hr
Jan 19, 7:41 PM CSTDense Fog AdvisoryABR14 hr
Feb 5, 3:56 AM CSTHigh Wind WatchABR24 hr
Feb 6, 3:36 AM CSTHigh Wind WarningABR44 hr
Feb 12, 3:14 PM CSTWinter Weather AdvisoryABR42 hr
Feb 13, 10:08 PM CSTWinter Storm WarningABR9 hr
Feb 18, 3:38 AM CSTHigh Wind WatchABR10 hr
Feb 18, 2:02 PM CSTHigh Wind WarningABR25 hr
Feb 29, 11:58 AM CSTWinter Weather AdvisoryABR7 hr
Mar 16, 3:30 AM CDTWind AdvisoryABR15 hr
Mar 30, 2:28 PM CDTWind AdvisoryABR29 hr
Apr 5, 3:15 AM CDTWind AdvisoryABR31 hr
Apr 6, 7:04 AM CDTWind AdvisoryABR3 hr
Apr 6, 3:19 PM CDTWind AdvisoryABR28 hr
Apr 9, 2:42 AM CDTWind AdvisoryABR15 hr
May 13, 3:04 AM CDTFreeze WarningABR30 hr
May 14, 11:33 AM CDTFrost AdvisoryABR21 hr
May 22, 3:20 PM CDTTornado WatchSPC7 hr
May 22, 9:59 PM CDTSevere Thunderstorm WatchSPC5 hr
May 22, 11:08 PM CDTSpecial Weather StatementABR37 min
May 24, 9:02 PM CDTMesoscale DiscussionSPC58 min
May 25, 4:41 PM CDTSpecial Weather StatementABR49 min
May 25, 4:46 PM CDTSevere Thunderstorm WarningABR44 min
May 30, 2:16 PM CDTMesoscale DiscussionSPC59 min
May 30, 2:48 PM CDTSevere Thunderstorm WatchSPC7 hr
May 30, 6:37 PM CDTMesoscale DiscussionSPC113 min
Jun 2, 5:04 PM CDTSevere Thunderstorm WatchSPC6 hr
Jun 2, 7:23 PM CDTMesoscale DiscussionSPC97 min
Jun 2, 8:28 PM CDTSpecial Weather StatementABR47 min
Jun 2, 9:19 PM CDTSevere Thunderstorm WarningABR41 min
Jun 9, 4:04 PM CDTHeat AdvisoryABR52 hr
Jun 12, 6:03 AM CDTSpecial Weather StatementABR72 min
Jun 21, 4:46 PM CDTSevere Thunderstorm WatchSPC7 hr
Jun 21, 8:00 PM CDTMesoscale DiscussionSPC60 min
Jun 22, 12:08 AM CDTSevere Thunderstorm WarningABR52 min
Jun 22, 12:17 AM CDTSevere Thunderstorm WarningABR30 min
Jun 22, 1:15 AM CDTMesoscale DiscussionSPC2 hr
Jun 22, 2:28 AM CDTSevere Thunderstorm WarningABR62 min
Jun 24, 3:33 AM CDTHeat AdvisoryABR15 hr
Jul 4, 11:42 PM CDTSevere Thunderstorm WarningABR35 min
Jul 6, 3:21 PM CDTTornado WatchSPC7 hr
Jul 6, 6:21 PM CDTSevere Thunderstorm WarningABR39 min
Jul 6, 6:48 PM CDTMesoscale DiscussionSPC57 min
Jul 6, 6:57 PM CDTSevere Thunderstorm WarningABR48 min
Jul 6, 7:42 PM CDTSevere Thunderstorm WarningABR48 min
Jul 9, 3:04 PM CDTHeat AdvisoryABR28 hr
Jul 9, 8:32 PM CDTSevere Thunderstorm WatchSPC5 hr
Jul 9, 10:18 PM CDTSevere Thunderstorm WarningABR42 min
Jul 9, 10:44 PM CDTMesoscale DiscussionSPC91 min
Jul 9, 11:02 PM CDTSevere Thunderstorm WarningABR58 min
Jul 10, 12:03 AM CDTSevere Thunderstorm WarningABR22 min
Jul 10, 3:06 PM CDTMesoscale DiscussionSPC84 min
Jul 10, 7:54 PM CDTMesoscale DiscussionSPC96 min
Jul 16, 12:27 PM CDTMesoscale DiscussionSPC2 hr
Jul 16, 5:09 PM CDTMesoscale DiscussionSPC96 min
Jul 16, 6:57 PM CDTSevere Thunderstorm WatchSPC7 hr
Jul 16, 7:07 PM CDTMesoscale DiscussionSPC83 min
Jul 16, 9:03 PM CDTSevere Thunderstorm WarningABR42 min
Jul 18, 3:45 AM CDTExcessive Heat WatchABR24 hr
Jul 19, 3:35 AM CDTExcessive Heat WarningABR4 days
Jul 22, 6:35 PM CDTMesoscale DiscussionSPC55 min
Jul 23, 6:10 AM CDTSevere Thunderstorm WarningABR17 min
Jul 23, 6:33 AM CDTSevere Thunderstorm WarningABR28 min
Jul 23, 7:40 AM CDTSpecial Weather StatementABR50 min
Jul 30, 7:34 PM CDTMesoscale DiscussionSPC86 min
Jul 30, 7:45 PM CDTSevere Thunderstorm WarningABR60 min
Jul 30, 7:48 PM CDTSevere Thunderstorm WatchSPC4 hr
Jul 30, 8:24 PM CDTSevere Thunderstorm WarningABR66 min
Jul 30, 9:27 PM CDTSevere Thunderstorm WarningABR78 min
Aug 1, 2:38 PM CDTMesoscale DiscussionSPC2 hr
Aug 3, 1:24 AM CDTSpecial Weather StatementABR66 min
Aug 3, 3:39 PM CDTSevere Thunderstorm WatchSPC7 hr
Aug 3, 6:29 PM CDTMesoscale DiscussionSPC91 min
Aug 8, 10:14 PM CDTSevere Thunderstorm WarningABR46 min
Aug 9, 3:01 PM CDTHeat AdvisoryABR29 hr
Aug 9, 9:51 PM CDTMesoscale DiscussionSPC114 min
Aug 10, 1:15 PM CDTSevere Thunderstorm WatchSPC7 hr
Aug 10, 3:49 PM CDTMesoscale DiscussionSPC56 min
Aug 10, 6:49 PM CDTSevere Thunderstorm WarningABR41 min
Aug 10, 7:27 PM CDTSevere Thunderstorm WarningABR35 min
Aug 10, 8:00 PM CDTSevere Thunderstorm WatchSPC6 hr
Aug 10, 9:02 PM CDTSevere Thunderstorm WarningABR43 min
Aug 11, 5:56 PM CDTMesoscale DiscussionSPC94 min
Aug 14, 5:42 PM CDTMesoscale DiscussionSPC2 hr
Aug 14, 6:15 PM CDTSevere Thunderstorm WatchSPC7 hr
Aug 14, 7:51 PM CDTSevere Thunderstorm WarningABR39 min
Aug 14, 8:17 PM CDTSevere Thunderstorm WarningABR58 min
Aug 14, 8:58 PM CDTSevere Thunderstorm WarningABR21 min
Aug 14, 9:04 PM CDTMesoscale DiscussionSPC56 min
Aug 14, 9:16 PM CDTSpecial Weather StatementABR44 min
Aug 14, 9:26 PM CDTSevere Thunderstorm WarningABR49 min
Aug 30, 4:51 PM CDTSevere Thunderstorm WarningABR39 min
Aug 30, 5:33 PM CDTSpecial Weather StatementABR57 min
Aug 30, 6:19 PM CDTSevere Thunderstorm WarningABR41 min
Sep 1, 9:10 PM CDTWind AdvisoryABR22 hr
Sep 4, 4:01 PM CDTMesoscale DiscussionSPC89 min
Sep 4, 4:53 PM CDTSevere Thunderstorm WatchSPC7 hr
Sep 4, 6:00 PM CDTSevere Thunderstorm WarningABR45 min
Sep 4, 6:30 PM CDTSpecial Weather StatementABR45 min
Sep 4, 6:56 PM CDTMesoscale DiscussionSPC94 min
Sep 4, 9:16 PM CDTMesoscale DiscussionSPC59 min
Sep 7, 1:20 PM CDTSpecial Weather StatementABR40 min
Sep 24, 2:58 PM CDTWind AdvisoryABR28 hr
Oct 3, 3:19 AM CDTWind AdvisoryABR16 hr
Oct 5, 3:16 PM CDTFrost AdvisoryABR19 hr
Oct 6, 3:06 PM CDTFreeze WarningABR19 hr
Oct 30, 2:55 PM CDTWind AdvisoryABR28 hr
Nov 16, 3:39 AM CSTWinter Storm WatchABR24 hr
Nov 17, 3:53 AM CSTWinter Weather AdvisoryABR32 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 7, 2:23 PM CSTWind Chill AdvisoryABR22 hr
Dec 10, 2:05 PM CSTWinter Weather AdvisoryABR17 hr
Dec 14, 2:43 AM CSTWinter Storm WatchABR36 hr
Dec 15, 4:25 AM CSTWinter Storm WarningABR52 hr
Dec 16, 3:37 AM CSTWind Chill WarningABR56 hr
Dec 16, 10:07 AM CSTMesoscale DiscussionSPC6 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.