Alert archive / South Dakota / Jerauld County

Weather alerts in Jerauld County, South Dakota, 2013

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

Jerauld County and its neighbors

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

Alerts
83
Warnings
15
Watches
13
Advisories
36
Busiest month
June17 alerts
Busiest day
June 21, 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.

0 of 1 tornado warnings covering Jerauld County in 2013 had a tornado report inside them.

Jerauld County, 2013

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings10100%0
Severe thunderstorm warnings880%2100%26 min
Flash flood warnings110%0

Each office's whole area, 2013

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Sioux Falls, SD: tornado warnings201240%3884%21 min
NWS Sioux Falls, SD: severe thunderstorm warnings1238630%16987%21 min
NWS Sioux Falls, SD: flash flood warnings161131%1782%89 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 11, 3:34 AM CSTWinter Weather AdvisoryFSD29 hr
Jan 20, 3:44 AM CSTWind Chill AdvisoryFSD48 hr
Jan 27, 7:35 PM CSTDense Fog AdvisoryFSD30 hr
Jan 28, 4:04 AM CSTWinter Weather AdvisoryFSD26 hr
Jan 30, 4:09 AM CSTWind Chill WarningFSD32 hr
Jan 30, 4:09 AM CSTWind Chill AdvisoryFSD53 hr
Jan 30, 4:09 AM CSTWind Chill AdvisoryFSD53 hr
Feb 7, 2:52 PM CSTWinter Storm WatchFSD13 hr
Feb 8, 4:11 AM CSTBlizzard WatchFSD36 hr
Feb 9, 4:25 AM CSTBlizzard WarningFSD56 hr
Feb 17, 3:11 PM CSTWind AdvisoryFSD30 hr
Feb 18, 2:51 PM CSTWind Chill AdvisoryFSD42 hr
Feb 19, 3:36 AM CSTWinter Storm WatchFSD35 hr
Feb 20, 11:02 AM CSTWinter Weather AdvisoryFSD49 hr
Mar 3, 2:33 PM CSTWind AdvisoryFSD48 hr
Mar 8, 3:06 PM CSTWinter Weather AdvisoryFSD30 hr
Mar 9, 4:56 AM CSTMesoscale DiscussionSPC5 hr
Mar 17, 4:27 AM CDTWind AdvisoryFSD39 hr
Mar 17, 4:27 AM CDTWind AdvisoryFSD15 hr
Apr 7, 3:55 AM CDTWinter Storm WatchFSD25 hr
Apr 8, 4:59 AM CDTWinter Storm WarningFSD3 days
Apr 9, 6:46 PM CDTMesoscale DiscussionSPC5 hr
Apr 15, 4:22 AM CDTWinter Storm WatchFSD35 hr
Apr 16, 3:30 PM CDTWinter Weather AdvisoryFSD48 hr
Apr 17, 10:51 AM CDTWinter Weather AdvisoryFSD29 hr
Apr 21, 4:05 PM CDTWinter Weather AdvisoryFSD30 hr
May 6, 5:31 AM CDTDense Fog AdvisoryFSD3 hr
May 11, 3:59 AM CDTFrost AdvisoryFSD29 hr
May 17, 7:59 PM CDTSevere Thunderstorm WatchSPC3 hr
May 17, 10:26 PM CDTMesoscale DiscussionSPC64 min
May 18, 8:33 PM CDTMesoscale DiscussionSPC117 min
May 24, 10:27 AM CDTWind AdvisoryFSD6 hr
May 25, 10:59 PM CDTMesoscale DiscussionSPC91 min
May 26, 3:24 AM CDTMesoscale DiscussionSPC96 min
May 26, 8:06 AM CDTSevere Thunderstorm WarningFSD39 min
May 27, 11:55 PM CDTSevere Thunderstorm WarningFSD50 min
Jun 20, 9:37 PM CDTMesoscale DiscussionSPC23 min
Jun 21, 9:09 AM CDTSevere Thunderstorm WatchSPC7 hr
Jun 21, 12:01 PM CDTMesoscale DiscussionSPC89 min
Jun 21, 1:40 PM CDTSevere Thunderstorm WarningFSD50 min
Jun 21, 1:58 PM CDTTornado WatchSPC7 hr
Jun 21, 2:30 PM CDTSevere Thunderstorm WarningFSD45 min
Jun 21, 2:48 PM CDTSevere Thunderstorm WarningFSD27 min
Jun 21, 5:59 PM CDTMesoscale DiscussionSPC91 min
Jun 21, 8:56 PM CDTMesoscale DiscussionSPC94 min
Jun 21, 9:07 PM CDTSevere Thunderstorm WatchSPC5 hr
Jun 22, 4:18 AM CDTFlash Flood WatchFSD27 hr
Jun 22, 9:21 PM CDTSevere Thunderstorm WatchSPC6 hr
Jun 22, 10:34 PM CDTMesoscale DiscussionSPC86 min
Jun 22, 11:33 PM CDTSevere Thunderstorm WarningFSD57 min
Jun 22, 11:48 PM CDTMesoscale DiscussionSPC87 min
Jun 22, 11:50 PM CDTTornado WarningFSD25 min
Jun 23, 12:12 AM CDTSevere Thunderstorm WarningFSD63 min
Jul 7, 5:03 PM CDTSevere Thunderstorm WarningFSD42 min
Jul 7, 5:15 PM CDTFlash Flood WarningFSD4 hr
Jul 8, 4:00 PM CDTSevere Thunderstorm WatchSPC7 hr
Jul 8, 7:36 PM CDTMesoscale DiscussionSPC84 min
Jul 12, 3:35 AM CDTHeat AdvisoryFSD17 hr
Jul 13, 11:29 PM CDTMesoscale DiscussionSPC61 min
Jul 17, 2:55 PM CDTHeat AdvisoryFSD28 hr
Aug 10, 7:26 PM CDTMesoscale DiscussionSPC94 min
Aug 12, 2:26 PM CDTMesoscale DiscussionSPC3 hr
Aug 24, 3:13 AM CDTHeat AdvisoryFSD7 days
Aug 31, 2:10 PM CDTMesoscale DiscussionSPC2 hr
Aug 31, 2:49 PM CDTSevere Thunderstorm WatchSPC7 hr
Sep 6, 3:31 AM CDTHeat AdvisoryFSD15 hr
Sep 8, 9:58 PM CDTMesoscale DiscussionSPC2 hr
Sep 30, 10:33 PM CDTWind AdvisoryFSD4 hr
Oct 10, 4:21 AM CDTWind AdvisoryFSD41 hr
Oct 12, 2:56 PM CDTFrost AdvisoryFSD18 hr
Oct 14, 3:04 PM CDTWind AdvisoryFSD22 hr
Dec 3, 3:42 AM CSTWinter Weather AdvisoryFSD41 hr
Dec 3, 3:09 PM CSTWinter Storm WarningFSD30 hr
Dec 4, 3:17 PM CSTWind Chill AdvisoryFSD69 hr
Dec 8, 3:54 AM CSTWind Chill AdvisoryFSD32 hr
Dec 10, 12:32 AM CSTWind AdvisoryFSD5 hr
Dec 10, 3:49 AM CSTWind Chill AdvisoryFSD32 hr
Dec 19, 1:31 PM CSTMesoscale DiscussionSPC4 hr
Dec 22, 3:54 AM CSTWind Chill AdvisoryFSD56 hr
Dec 22, 9:51 PM CSTWind Chill WarningFSD12 hr
Dec 22, 9:51 PM CSTWind Chill AdvisoryFSD38 hr
Dec 27, 3:14 PM CSTWind Chill AdvisoryFSD60 hr
Dec 28, 4:04 AM CSTWind AdvisoryFSD24 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.