Alert archive / South Dakota / Lawrence County

Weather alerts in Lawrence County, South Dakota, 2016

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

Lawrence County and its neighbors

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

Alerts: 193
Warnings: 46
Watches: 21
Advisories: 28
Busiest month: August47 alerts
Busiest day: July 31, 20167 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 Lawrence County in 2016 had a tornado report inside them.

Lawrence County, 2016

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	1	0	100%	0
Severe thunderstorm warnings	30	21	30%	15	73%	11 min
Flash flood warnings	0			0

Each office's whole area, 2016

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Rapid City, SD: tornado warnings	11	3	73%	10	50%	4 min
NWS Rapid City, SD: severe thunderstorm warnings	391	279	29%	553	87%	24 min
NWS Rapid City, SD: flash flood warnings	6	5	17%	7	100%	88 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.

Issued	Product	Office	Lasted
Jan 14, 2:39 AM MST	Winter Weather Advisory	UNR	18 hr
Jan 24, 2:31 AM MST	Winter Weather Advisory	UNR	35 hr
Feb 5, 2:48 AM MST	High Wind Watch	UNR	23 hr
Feb 5, 1:52 PM MST	High Wind Warning	UNR	54 hr
Feb 11, 11:10 AM MST	Wind Advisory	UNR	6 hr
Feb 12, 3:10 PM MST	Winter Weather Advisory	UNR	31 hr
Feb 13, 1:46 PM MST	High Wind Warning	UNR	5 hr
Feb 17, 2:02 PM MST	High Wind Watch	UNR	14 hr
Feb 18, 12:21 AM MST	High Wind Warning	UNR	39 hr
Feb 23, 7:38 PM MST	Wind Advisory	UNR	21 hr
Feb 27, 4:04 PM MST	Wind Advisory	UNR	19 hr
Mar 15, 2:27 PM MDT	Wind Advisory	UNR	28 hr
Mar 21, 3:23 PM MDT	Winter Weather Advisory	UNR	51 hr
Mar 22, 3:53 AM MDT	Winter Storm Warning	UNR	32 hr
Mar 24, 7:17 PM MDT	Winter Weather Advisory	UNR	27 hr
Mar 27, 2:35 PM MDT	Winter Storm Watch	UNR	48 hr
Mar 29, 2:43 PM MDT	Winter Storm Warning	UNR	19 hr
Mar 29, 2:43 PM MDT	Winter Weather Advisory	UNR	19 hr
Mar 30, 2:31 PM MDT	Wind Advisory	UNR	29 hr
Mar 30, 2:31 PM MDT	Winter Weather Advisory	UNR	15 hr
Apr 4, 2:52 AM MDT	High Wind Watch	UNR	25 hr
Apr 5, 3:40 AM MDT	High Wind Warning	UNR	26 hr
Apr 6, 2:59 AM MDT	Wind Advisory	UNR	16 hr
Apr 14, 3:44 PM MDT	Mesoscale Discussion	SPC	2 hr
Apr 16, 3:39 AM MDT	Winter Weather Advisory	UNR	24 hr
Apr 23, 7:16 PM MDT	Special Weather Statement	UNR	29 min
Apr 24, 3:36 AM MDT	Special Weather Statement	UNR	24 min
Apr 25, 3:37 AM MDT	Winter Storm Watch	UNR	24 hr
Apr 26, 3:32 AM MDT	Winter Storm Warning	UNR	22 hr
Apr 27, 10:19 AM MDT	Winter Weather Advisory	UNR	16 hr
Apr 27, 4:50 PM MDT	Special Weather Statement	UNR	55 min
Apr 29, 3:04 PM MDT	Winter Weather Advisory	UNR	17 hr
May 13, 2:46 AM MDT	Freeze Warning	UNR	29 hr
May 14, 2:40 PM MDT	Frost Advisory	UNR	12 hr
May 20, 11:15 AM MDT	Special Weather Statement	UNR	45 min
May 20, 12:32 PM MDT	Special Weather Statement	UNR	28 min
May 20, 5:01 PM MDT	Severe Thunderstorm Warning	UNR	59 min
May 20, 5:48 PM MDT	Mesoscale Discussion	SPC	87 min
May 20, 5:55 PM MDT	Severe Thunderstorm Warning	UNR	30 min
May 28, 1:37 PM MDT	Special Weather Statement	UNR	23 min
May 29, 1:51 PM MDT	Special Weather Statement	UNR	39 min
May 31, 1:52 AM MDT	Wind Advisory	UNR	17 hr
Jun 8, 12:02 PM MDT	Special Weather Statement	UNR	58 min
Jun 8, 12:54 PM MDT	Areal Flood Advisory	UNR	6 hr
Jun 8, 1:06 PM MDT	Special Weather Statement	UNR	54 min
Jun 9, 4:06 PM MDT	Mesoscale Discussion	SPC	84 min
Jun 9, 8:50 PM MDT	Severe Thunderstorm Warning	UNR	55 min
Jun 9, 9:32 PM MDT	Severe Thunderstorm Warning	UNR	58 min
Jun 13, 12:45 PM MDT	Severe Thunderstorm Watch	SPC	9 hr
Jun 13, 2:51 PM MDT	Mesoscale Discussion	SPC	54 min
Jun 13, 6:00 PM MDT	Mesoscale Discussion	SPC	90 min
Jun 14, 2:31 PM MDT	Mesoscale Discussion	SPC	119 min
Jun 18, 3:36 AM MDT	Severe Thunderstorm Warning	UNR	54 min
Jun 18, 4:24 AM MDT	Special Weather Statement	UNR	81 min
Jun 21, 2:27 PM MDT	Mesoscale Discussion	SPC	2 hr
Jun 21, 3:46 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 21, 4:20 PM MDT	Special Weather Statement	UNR	25 min
Jun 24, 5:04 PM MDT	Severe Thunderstorm Warning	UNR	41 min
Jun 24, 6:12 PM MDT	Special Weather Statement	UNR	48 min
Jun 28, 11:32 AM MDT	Mesoscale Discussion	SPC	58 min
Jun 28, 12:55 PM MDT	Mesoscale Discussion	SPC	95 min
Jun 28, 1:37 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 28, 2:32 PM MDT	Special Weather Statement	UNR	28 min
Jun 28, 4:01 PM MDT	Severe Thunderstorm Warning	UNR	44 min
Jun 29, 12:47 PM MDT	Mesoscale Discussion	SPC	88 min
Jun 29, 2:43 PM MDT	Severe Thunderstorm Watch	SPC	5 hr
Jun 29, 6:32 PM MDT	Mesoscale Discussion	SPC	118 min
Jul 3, 2:24 PM MDT	Special Weather Statement	UNR	51 min
Jul 3, 2:38 PM MDT	Mesoscale Discussion	SPC	2 hr
Jul 3, 3:23 PM MDT	Special Weather Statement	UNR	52 min
Jul 3, 9:15 PM MDT	Special Weather Statement	UNR	60 min
Jul 4, 4:16 PM MDT	Special Weather Statement	UNR	59 min
Jul 4, 8:38 PM MDT	Special Weather Statement	UNR	52 min
Jul 4, 9:44 PM MDT	Special Weather Statement	UNR	46 min
Jul 4, 10:19 PM MDT	Special Weather Statement	UNR	56 min
Jul 5, 8:49 PM MDT	Special Weather Statement	UNR	26 min
Jul 6, 1:19 AM MDT	Severe Thunderstorm Warning	UNR	56 min
Jul 6, 1:51 PM MDT	Mesoscale Discussion	SPC	84 min
Jul 6, 2:21 PM MDT	Tornado Watch	SPC	7 hr
Jul 6, 2:31 PM MDT	Severe Thunderstorm Warning	UNR	59 min
Jul 6, 3:22 PM MDT	Severe Thunderstorm Warning	UNR	53 min
Jul 9, 3:29 PM MDT	Special Weather Statement	UNR	31 min
Jul 16, 2:33 PM MDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 16, 4:21 PM MDT	Severe Thunderstorm Warning	UNR	39 min
Jul 16, 4:34 PM MDT	Tornado Warning	UNR	19 min
Jul 16, 4:58 PM MDT	Severe Thunderstorm Warning	UNR	47 min
Jul 16, 5:21 PM MDT	Severe Thunderstorm Warning	UNR	39 min
Jul 16, 5:34 PM MDT	Severe Thunderstorm Warning	UNR	41 min
Jul 18, 1:29 PM MDT	Special Weather Statement	UNR	31 min
Jul 18, 2:17 PM MDT	Severe Thunderstorm Warning	UNR	58 min
Jul 18, 2:30 PM MDT	Special Weather Statement	UNR	30 min
Jul 18, 3:14 PM MDT	Severe Thunderstorm Warning	UNR	61 min
Jul 18, 3:37 PM MDT	Mesoscale Discussion	SPC	83 min
Jul 18, 4:13 PM MDT	Severe Thunderstorm Warning	UNR	62 min
Jul 22, 4:42 AM MDT	Heat Advisory	UNR	13 hr
Jul 26, 2:42 PM MDT	Special Weather Statement	UNR	18 min
Jul 26, 3:49 PM MDT	Special Weather Statement	UNR	41 min
Jul 26, 4:32 PM MDT	Mesoscale Discussion	SPC	118 min
Jul 29, 3:00 PM MDT	Mesoscale Discussion	SPC	90 min
Jul 29, 3:38 PM MDT	Severe Thunderstorm Warning	UNR	41 min
Jul 30, 2:03 PM MDT	Special Weather Statement	UNR	27 min
Jul 30, 2:32 PM MDT	Mesoscale Discussion	SPC	2 hr
Jul 30, 6:45 PM MDT	Severe Thunderstorm Warning	UNR	60 min
Jul 31, 12:00 PM MDT	Mesoscale Discussion	SPC	90 min
Jul 31, 2:48 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 31, 2:56 PM MDT	Severe Thunderstorm Warning	UNR	64 min
Jul 31, 4:00 PM MDT	Special Weather Statement	UNR	45 min
Jul 31, 4:42 PM MDT	Mesoscale Discussion	SPC	2 hr
Jul 31, 4:51 PM MDT	Special Weather Statement	UNR	54 min
Jul 31, 7:04 PM MDT	Special Weather Statement	UNR	56 min
Jul 31, 7:46 PM MDT	Mesoscale Discussion	SPC	89 min
Aug 1, 2:36 PM MDT	Special Weather Statement	UNR	24 min
Aug 1, 2:52 PM MDT	Severe Thunderstorm Warning	UNR	23 min
Aug 1, 3:12 PM MDT	Severe Thunderstorm Warning	UNR	33 min
Aug 1, 3:43 PM MDT	Mesoscale Discussion	SPC	3 hr
Aug 1, 3:46 PM MDT	Severe Thunderstorm Warning	UNR	12 min
Aug 2, 1:46 PM MDT	Mesoscale Discussion	SPC	119 min
Aug 2, 6:13 PM MDT	Severe Thunderstorm Warning	UNR	47 min
Aug 2, 6:59 PM MDT	Severe Thunderstorm Warning	UNR	61 min
Aug 2, 7:10 PM MDT	Mesoscale Discussion	SPC	3 hr
Aug 2, 7:47 PM MDT	Special Weather Statement	UNR	28 min
Aug 2, 8:25 PM MDT	Special Weather Statement	UNR	35 min
Aug 7, 4:14 PM MDT	Special Weather Statement	UNR	31 min
Aug 7, 5:26 PM MDT	Mesoscale Discussion	SPC	2 hr
Aug 8, 4:06 PM MDT	Severe Thunderstorm Warning	UNR	54 min
Aug 8, 5:37 PM MDT	Special Weather Statement	UNR	23 min
Aug 8, 5:47 PM MDT	Special Weather Statement	UNR	43 min
Aug 8, 5:58 PM MDT	Severe Thunderstorm Warning	UNR	38 min
Aug 9, 3:51 PM MDT	Mesoscale Discussion	SPC	114 min
Aug 9, 4:16 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 9, 4:51 PM MDT	Special Weather Statement	UNR	39 min
Aug 9, 5:23 PM MDT	Special Weather Statement	UNR	52 min
Aug 9, 6:03 PM MDT	Special Weather Statement	UNR	42 min
Aug 10, 4:06 PM MDT	Special Weather Statement	UNR	39 min
Aug 10, 4:09 PM MDT	Special Weather Statement	UNR	51 min
Aug 10, 4:18 PM MDT	Mesoscale Discussion	SPC	57 min
Aug 10, 8:54 PM MDT	Special Weather Statement	UNR	36 min
Aug 11, 1:35 PM MDT	Mesoscale Discussion	SPC	2 hr
Aug 11, 2:05 PM MDT	Special Weather Statement	UNR	40 min
Aug 12, 5:37 PM MDT	Special Weather Statement	UNR	53 min
Aug 12, 7:19 PM MDT	Special Weather Statement	UNR	56 min
Aug 12, 7:38 PM MDT	Special Weather Statement	UNR	67 min
Aug 14, 2:24 PM MDT	Mesoscale Discussion	SPC	2 hr
Aug 14, 5:15 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 14, 7:08 PM MDT	Special Weather Statement	UNR	37 min
Aug 14, 7:32 PM MDT	Severe Thunderstorm Warning	UNR	58 min
Aug 14, 8:04 PM MDT	Mesoscale Discussion	SPC	56 min
Aug 15, 2:30 PM MDT	Mesoscale Discussion	SPC	90 min
Aug 17, 2:04 PM MDT	Special Weather Statement	UNR	26 min
Aug 17, 2:33 PM MDT	Special Weather Statement	UNR	27 min
Aug 17, 3:14 PM MDT	Special Weather Statement	UNR	46 min
Aug 26, 3:59 PM MDT	Special Weather Statement	UNR	46 min
Aug 26, 4:16 PM MDT	Severe Thunderstorm Warning	UNR	59 min
Aug 29, 2:34 PM MDT	Special Weather Statement	UNR	26 min
Aug 30, 3:03 PM MDT	Special Weather Statement	UNR	42 min
Aug 30, 3:47 PM MDT	Special Weather Statement	UNR	43 min
Sep 5, 4:37 PM MDT	Severe Thunderstorm Warning	UNR	68 min
Sep 5, 5:09 PM MDT	Mesoscale Discussion	SPC	3 hr
Sep 14, 6:41 PM MDT	Special Weather Statement	UNR	34 min
Sep 14, 7:02 PM MDT	Special Weather Statement	UNR	28 min
Sep 14, 7:25 PM MDT	Special Weather Statement	UNR	50 min
Sep 14, 7:30 PM MDT	Special Weather Statement	UNR	30 min
Sep 15, 2:12 PM MDT	Special Weather Statement	UNR	48 min
Sep 23, 1:23 PM MDT	Mesoscale Discussion	SPC	67 min
Sep 23, 1:39 PM MDT	Wind Advisory	UNR	50 hr
Sep 23, 2:21 PM MDT	Severe Thunderstorm Watch	SPC	8 hr
Sep 23, 5:35 PM MDT	Mesoscale Discussion	SPC	85 min
Sep 23, 7:04 PM MDT	Special Weather Statement	UNR	26 min
Oct 3, 12:46 PM MDT	Mesoscale Discussion	SPC	59 min
Oct 3, 1:04 PM MDT	Severe Thunderstorm Watch	SPC	8 hr
Oct 5, 2:47 PM MDT	Frost Advisory	UNR	18 hr
Oct 6, 2:54 PM MDT	Freeze Warning	UNR	18 hr
Oct 31, 2:57 AM MDT	Wind Advisory	UNR	15 hr
Nov 15, 2:01 PM MST	Winter Storm Watch	UNR	37 hr
Nov 16, 2:45 PM MST	Winter Storm Warning	UNR	42 hr
Nov 26, 9:14 PM MST	Winter Storm Watch	UNR	29 hr
Nov 27, 8:50 PM MST	Winter Storm Warning	UNR	54 hr
Nov 28, 2:14 AM MST	Winter Weather Advisory	UNR	57 hr
Dec 5, 3:13 AM MST	Wind Advisory	UNR	15 hr
Dec 6, 2:54 PM MST	Wind Chill Advisory	UNR	21 hr
Dec 7, 2:41 PM MST	Wind Chill Advisory	UNR	20 hr
Dec 13, 2:02 PM MST	Winter Storm Watch	UNR	47 hr
Dec 15, 2:49 AM MST	Winter Storm Warning	UNR	47 hr
Dec 16, 9:07 AM MST	Mesoscale Discussion	SPC	6 hr
Dec 17, 1:42 AM MST	Wind Chill Warning	UNR	33 hr
Dec 20, 2:38 PM MST	Wind Advisory	UNR	23 hr
Dec 21, 1:54 PM MST	Blizzard Watch	UNR	62 hr
Dec 21, 1:54 PM MST	Winter Storm Watch	UNR	62 hr
Dec 23, 1:57 PM MST	Blizzard Warning	UNR	3 days
Dec 23, 1:57 PM MST	Winter Storm Warning	UNR	67 hr
Dec 25, 3:32 AM MST	Mesoscale Discussion	SPC	6 hr
Dec 25, 11:56 AM MST	Mesoscale Discussion	SPC	5 hr
Dec 25, 5:33 PM MST	Mesoscale Discussion	SPC	6 hr

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

Product	Alerts
Severe storms
Severe Thunderstorm Warning	30
Tornado Warning	1
Severe Thunderstorm Watch	10
Tornado Watch	1
Mesoscale Discussion	38
Special Weather Statement	60
Flooding
Areal Flood Advisory	1
Winter
Blizzard Warning	1
Winter Storm Warning	7
Blizzard Watch	1
Winter Storm Watch	6
Winter Weather Advisory	11
Heat
Heat Advisory	1
Cold
Freeze Warning	2
Wind Chill Warning	1
Frost Advisory	2
Wind Chill Advisory	2
Wind and dust
High Wind Warning	4
High Wind Watch	3
Wind Advisory	11

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2015 2017

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.