Weather alerts in Platte County, Wyoming, 2015

202 weather alerts in 2015, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Platte County and its neighbors

Each county as a circle sized by its count in 2015. Tap one for its archive.

Alerts: 202
Warnings: 74
Watches: 38
Advisories: 24
Busiest month: June87 alerts
Busiest day: June 4, 201523 alerts

Over time

By month

Warning verification

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

Platte County, 2015

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			0
Severe thunderstorm warnings	35	18	49%	26	88%	15 min
Flash flood warnings	3	2	33%	1	100%	118 min

Each office's whole area, 2015

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Cheyenne, WY: tornado warnings	10	4	60%	17	47%	18 min
NWS Cheyenne, WY: severe thunderstorm warnings	184	85	54%	207	83%	20 min
NWS Cheyenne, WY: flash flood warnings	22	11	50%	29	93%	95 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 3, 1:29 AM MST	Winter Weather Advisory	CYS	17 hr
Jan 3, 1:43 AM MST	High Wind Watch	CYS	14 hr
Jan 3, 3:13 PM MST	High Wind Warning	CYS	58 hr
Jan 4, 1:15 AM MST	High Wind Watch	CYS	24 hr
Jan 7, 3:13 AM MST	High Wind Watch	CYS	10 hr
Jan 7, 1:10 PM MST	High Wind Warning	CYS	16 hr
Jan 15, 3:13 AM MST	High Wind Watch	CYS	24 hr
Jan 15, 1:58 PM MST	High Wind Warning	CYS	40 hr
Jan 16, 3:19 AM MST	High Wind Watch	CYS	9 hr
Jan 17, 5:49 AM MST	High Wind Watch	CYS	4 hr
Jan 17, 9:34 AM MST	High Wind Warning	CYS	31 hr
Jan 24, 1:30 AM MST	High Wind Warning	CYS	12 hr
Jan 26, 1:41 AM MST	High Wind Watch	CYS	24 hr
Jan 26, 1:28 PM MST	High Wind Warning	CYS	38 hr
Feb 1, 4:22 AM MST	High Wind Watch	CYS	22 hr
Feb 2, 2:41 AM MST	High Wind Warning	CYS	32 hr
Feb 2, 8:31 PM MST	Winter Storm Watch	CYS	6 hr
Feb 2, 8:31 PM MST	Winter Storm Warning	CYS	41 hr
Feb 3, 2:56 AM MST	Winter Weather Advisory	CYS	35 hr
Feb 5, 2:02 PM MST	High Wind Watch	CYS	12 hr
Feb 5, 2:02 PM MST	High Wind Warning	CYS	54 hr
Feb 6, 2:19 AM MST	High Wind Watch	CYS	24 hr
Feb 8, 2:24 PM MST	High Wind Watch	CYS	29 hr
Feb 9, 2:08 PM MST	High Wind Warning	CYS	11 hr
Feb 13, 1:36 PM MST	Winter Storm Watch	CYS	24 hr
Feb 14, 1:51 PM MST	Winter Storm Warning	CYS	37 hr
Feb 14, 1:51 PM MST	Winter Weather Advisory	CYS	37 hr
Feb 18, 2:46 PM MST	High Wind Warning	CYS	18 hr
Feb 20, 1:47 PM MST	Winter Weather Advisory	CYS	38 hr
Mar 1, 2:31 PM MST	Winter Storm Warning	CYS	54 hr
Mar 2, 3:40 AM MST	Winter Weather Advisory	CYS	41 hr
Mar 3, 9:10 PM MST	Wind Chill Advisory	CYS	11 hr
Mar 23, 2:43 AM MDT	High Wind Watch	CYS	24 hr
Mar 23, 11:24 AM MDT	High Wind Warning	CYS	25 hr
Mar 28, 5:46 PM MDT	High Wind Warning	CYS	5 hr
Apr 8, 2:01 PM MDT	Special Weather Statement	CYS	44 min
Apr 8, 2:47 PM MDT	Special Weather Statement	CYS	43 min
Apr 15, 3:21 AM MDT	Winter Weather Advisory	CYS	24 hr
Apr 15, 7:32 PM MDT	Winter Storm Watch	CYS	8 hr
Apr 16, 3:41 AM MDT	Winter Weather Advisory	CYS	67 hr
May 7, 4:01 AM MDT	Winter Storm Watch	CYS	48 hr
May 8, 10:16 PM MDT	Winter Storm Warning	CYS	40 hr
May 9, 2:33 AM MDT	Areal Flood Advisory	CYS	3 hr
May 23, 2:02 PM MDT	Flash Flood Watch	CYS	28 hr
May 23, 2:22 PM MDT	Special Weather Statement	CYS	38 min
May 23, 4:47 PM MDT	Special Weather Statement	CYS	43 min
May 23, 5:24 PM MDT	Areal Flood Warning	CYS	12 hr
May 23, 8:14 PM MDT	Areal Flood Advisory	CYS	6 hr
May 26, 8:11 PM MDT	Special Weather Statement	CYS	49 min
Jun 1, 12:27 PM MDT	Special Weather Statement	CYS	48 min
Jun 1, 1:56 PM MDT	Special Weather Statement	CYS	34 min
Jun 1, 2:36 PM MDT	Special Weather Statement	CYS	39 min
Jun 2, 12:37 PM MDT	Mesoscale Discussion	SPC	53 min
Jun 2, 2:56 PM MDT	Special Weather Statement	CYS	49 min
Jun 2, 3:07 PM MDT	Severe Thunderstorm Warning	CYS	27 min
Jun 3, 12:34 PM MDT	Mesoscale Discussion	SPC	86 min
Jun 3, 2:03 PM MDT	Tornado Watch	SPC	7 hr
Jun 3, 6:48 PM MDT	Special Weather Statement	CYS	27 min
Jun 3, 7:04 PM MDT	Severe Thunderstorm Warning	CYS	41 min
Jun 3, 7:14 PM MDT	Mesoscale Discussion	SPC	61 min
Jun 3, 7:58 PM MDT	Special Weather Statement	CYS	47 min
Jun 3, 8:03 PM MDT	Severe Thunderstorm Warning	CYS	42 min
Jun 3, 8:43 PM MDT	Severe Thunderstorm Warning	CYS	47 min
Jun 3, 8:59 PM MDT	Severe Thunderstorm Watch	SPC	5 hr
Jun 3, 9:34 PM MDT	Severe Thunderstorm Warning	CYS	41 min
Jun 3, 10:15 PM MDT	Flash Flood Warning	CYS	4 hr
Jun 3, 10:16 PM MDT	Severe Thunderstorm Warning	CYS	44 min
Jun 4, 2:16 AM MDT	Flash Flood Warning	CYS	3 hr
Jun 4, 5:21 AM MDT	Areal Flood Warning	CYS	6 hr
Jun 4, 1:53 PM MDT	Mesoscale Discussion	SPC	97 min
Jun 4, 2:20 PM MDT	Tornado Watch	SPC	8 hr
Jun 4, 2:34 PM MDT	Severe Thunderstorm Warning	CYS	41 min
Jun 4, 2:49 PM MDT	Special Weather Statement	CYS	41 min
Jun 4, 3:12 PM MDT	Severe Thunderstorm Warning	CYS	48 min
Jun 4, 3:47 PM MDT	Special Weather Statement	CYS	43 min
Jun 4, 4:00 PM MDT	Severe Thunderstorm Warning	CYS	30 min
Jun 4, 4:27 PM MDT	Severe Thunderstorm Warning	CYS	48 min
Jun 4, 5:17 PM MDT	Severe Thunderstorm Warning	CYS	43 min
Jun 4, 5:22 PM MDT	Mesoscale Discussion	SPC	113 min
Jun 4, 5:57 PM MDT	Flash Flood Warning	CYS	3 hr
Jun 4, 6:15 PM MDT	Severe Thunderstorm Warning	CYS	45 min
Jun 4, 7:14 PM MDT	Severe Thunderstorm Warning	CYS	27 min
Jun 5, 9:43 AM MDT	Flash Flood Watch	CYS	14 hr
Jun 5, 11:34 AM MDT	Special Weather Statement	CYS	41 min
Jun 5, 12:49 PM MDT	Mesoscale Discussion	SPC	86 min
Jun 6, 7:20 PM MDT	Severe Thunderstorm Warning	CYS	55 min
Jun 7, 1:04 AM MDT	Special Weather Statement	CYS	26 min
Jun 10, 3:39 AM MDT	Flash Flood Watch	CYS	38 hr
Jun 13, 7:39 PM MDT	Severe Thunderstorm Warning	CYS	36 min
Jun 13, 9:27 PM MDT	Areal Flood Advisory	CYS	2 hr
Jun 14, 2:59 PM MDT	Special Weather Statement	CYS	31 min
Jun 14, 3:46 PM MDT	Special Weather Statement	CYS	29 min
Jun 14, 3:58 PM MDT	Severe Thunderstorm Warning	CYS	32 min
Jun 14, 4:22 PM MDT	Severe Thunderstorm Warning	CYS	23 min
Jun 14, 4:45 PM MDT	Severe Thunderstorm Warning	CYS	30 min
Jun 14, 5:16 PM MDT	Severe Thunderstorm Warning	CYS	29 min
Jun 14, 5:46 PM MDT	Severe Thunderstorm Warning	CYS	44 min
Jun 15, 2:31 AM MDT	Flash Flood Watch	CYS	24 hr
Jun 15, 12:41 PM MDT	Mesoscale Discussion	SPC	94 min
Jun 15, 2:24 PM MDT	Severe Thunderstorm Watch	SPC	8 hr
Jun 15, 4:22 PM MDT	Mesoscale Discussion	SPC	83 min
Jun 15, 4:33 PM MDT	Special Weather Statement	CYS	42 min
Jun 15, 4:53 PM MDT	Severe Thunderstorm Warning	CYS	37 min
Jun 15, 7:29 PM MDT	Mesoscale Discussion	SPC	91 min
Jun 16, 1:12 PM MDT	Mesoscale Discussion	SPC	2 hr
Jun 16, 1:28 PM MDT	Special Weather Statement	CYS	47 min
Jun 16, 2:02 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 16, 2:35 PM MDT	Special Weather Statement	CYS	25 min
Jun 16, 3:18 PM MDT	Severe Thunderstorm Warning	CYS	42 min
Jun 16, 3:41 PM MDT	Severe Thunderstorm Warning	CYS	49 min
Jun 16, 4:27 PM MDT	Severe Thunderstorm Warning	CYS	48 min
Jun 16, 4:47 PM MDT	Severe Thunderstorm Warning	CYS	43 min
Jun 16, 4:53 PM MDT	Mesoscale Discussion	SPC	97 min
Jun 16, 5:31 PM MDT	Severe Thunderstorm Warning	CYS	44 min
Jun 16, 6:03 PM MDT	Severe Thunderstorm Warning	CYS	27 min
Jun 17, 4:06 PM MDT	Severe Thunderstorm Warning	CYS	24 min
Jun 17, 4:20 PM MDT	Mesoscale Discussion	SPC	55 min
Jun 18, 4:55 PM MDT	Special Weather Statement	CYS	50 min
Jun 18, 5:28 PM MDT	Severe Thunderstorm Warning	CYS	21 min
Jun 23, 4:09 PM MDT	Mesoscale Discussion	SPC	96 min
Jun 24, 12:27 PM MDT	Mesoscale Discussion	SPC	2 hr
Jun 24, 5:12 PM MDT	Special Weather Statement	CYS	33 min
Jun 24, 8:14 PM MDT	Special Weather Statement	CYS	46 min
Jun 24, 10:13 PM MDT	Severe Thunderstorm Warning	CYS	27 min
Jun 25, 9:58 AM MDT	Severe Thunderstorm Warning	CYS	47 min
Jun 25, 10:58 AM MDT	Mesoscale Discussion	SPC	2 hr
Jun 25, 2:10 PM MDT	Mesoscale Discussion	SPC	65 min
Jun 25, 2:30 PM MDT	Severe Thunderstorm Watch	SPC	8 hr
Jun 25, 3:29 PM MDT	Special Weather Statement	CYS	46 min
Jun 25, 4:07 PM MDT	Severe Thunderstorm Warning	CYS	38 min
Jun 25, 4:46 PM MDT	Special Weather Statement	CYS	44 min
Jun 25, 6:12 PM MDT	Special Weather Statement	CYS	48 min
Jun 28, 5:16 PM MDT	Mesoscale Discussion	SPC	119 min
Jun 28, 9:48 PM MDT	Special Weather Statement	CYS	27 min
Jun 28, 10:17 PM MDT	Special Weather Statement	CYS	28 min
Jun 30, 4:31 PM MDT	Mesoscale Discussion	SPC	119 min
Jun 30, 8:07 PM MDT	Special Weather Statement	CYS	23 min
Jul 1, 3:40 PM MDT	Special Weather Statement	CYS	35 min
Jul 1, 3:58 PM MDT	Special Weather Statement	CYS	32 min
Jul 1, 5:02 PM MDT	Special Weather Statement	CYS	43 min
Jul 3, 3:09 AM MDT	Special Weather Statement	CYS	66 min
Jul 3, 2:45 PM MDT	Special Weather Statement	CYS	45 min
Jul 3, 3:12 PM MDT	Severe Thunderstorm Warning	CYS	63 min
Jul 3, 3:59 PM MDT	Severe Thunderstorm Warning	CYS	61 min
Jul 3, 4:17 PM MDT	Special Weather Statement	CYS	43 min
Jul 3, 6:50 PM MDT	Special Weather Statement	CYS	55 min
Jul 4, 12:56 PM MDT	Special Weather Statement	CYS	49 min
Jul 4, 7:23 PM MDT	Special Weather Statement	CYS	52 min
Jul 15, 7:10 PM MDT	Special Weather Statement	CYS	50 min
Jul 17, 3:45 PM MDT	Mesoscale Discussion	SPC	60 min
Jul 17, 5:02 PM MDT	Mesoscale Discussion	SPC	118 min
Jul 17, 5:21 PM MDT	Special Weather Statement	CYS	39 min
Aug 16, 5:12 PM MDT	Special Weather Statement	CYS	48 min
Aug 16, 5:24 PM MDT	Mesoscale Discussion	SPC	2 hr
Aug 17, 2:47 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 17, 6:16 PM MDT	Mesoscale Discussion	SPC	89 min
Aug 17, 10:46 PM MDT	Severe Thunderstorm Warning	CYS	44 min
Sep 29, 1:48 PM MDT	Mesoscale Discussion	SPC	117 min
Sep 29, 4:46 PM MDT	Special Weather Statement	CYS	29 min
Sep 29, 5:50 PM MDT	Special Weather Statement	CYS	25 min
Oct 10, 2:30 AM MDT	High Wind Watch	CYS	18 hr
Oct 10, 8:24 PM MDT	High Wind Warning	CYS	23 hr
Oct 15, 2:06 PM MDT	Frost Advisory	CYS	11 hr
Oct 15, 2:06 PM MDT	Freeze Warning	CYS	19 hr
Oct 31, 1:44 PM MDT	High Wind Warning	CYS	26 hr
Nov 4, 2:26 AM MST	Winter Storm Warning	CYS	24 hr
Nov 4, 2:26 AM MST	Winter Weather Advisory	CYS	30 hr
Nov 8, 6:26 AM MST	High Wind Warning	CYS	5 hr
Nov 10, 1:42 PM MST	Winter Storm Warning	CYS	36 hr
Nov 10, 1:42 PM MST	Winter Weather Advisory	CYS	18 hr
Nov 11, 1:39 PM MST	High Wind Warning	CYS	12 hr
Nov 12, 6:24 AM MST	High Wind Watch	CYS	5 hr
Nov 12, 11:47 AM MST	High Wind Warning	CYS	20 hr
Nov 15, 4:06 PM MST	Winter Weather Advisory	CYS	41 hr
Nov 17, 9:35 AM MST	High Wind Watch	CYS	18 hr
Nov 17, 9:35 AM MST	High Wind Warning	CYS	31 hr
Nov 19, 2:37 PM MST	Winter Weather Advisory	CYS	30 hr
Nov 24, 2:16 PM MST	Winter Weather Advisory	CYS	10 hr
Nov 25, 12:39 AM MST	Winter Storm Warning	CYS	34 hr
Nov 25, 12:39 AM MST	Winter Weather Advisory	CYS	40 hr
Nov 30, 2:52 AM MST	High Wind Watch	CYS	9 hr
Nov 30, 11:51 AM MST	High Wind Warning	CYS	24 hr
Dec 6, 12:37 AM MST	High Wind Watch	CYS	37 hr
Dec 6, 1:18 PM MST	High Wind Warning	CYS	4 days
Dec 8, 3:16 PM MST	High Wind Watch	CYS	11 hr
Dec 10, 9:02 AM MST	High Wind Warning	CYS	14 hr
Dec 11, 4:08 AM MST	Winter Weather Advisory	CYS	42 hr
Dec 13, 2:35 AM MST	Freezing Fog Advisory	CYS	2 hr
Dec 13, 4:43 AM MST	Dense Fog Advisory	CYS	4 hr
Dec 13, 12:44 PM MST	Winter Storm Watch	CYS	25 hr
Dec 14, 4:51 AM MST	Winter Storm Warning	CYS	46 hr
Dec 14, 4:51 AM MST	Winter Weather Advisory	CYS	42 hr
Dec 16, 2:45 PM MST	High Wind Watch	CYS	12 hr
Dec 17, 2:22 AM MST	High Wind Warning	CYS	40 hr
Dec 19, 2:18 PM MST	High Wind Watch	CYS	11 hr
Dec 20, 1:19 AM MST	High Wind Warning	CYS	59 hr
Dec 21, 3:51 AM MST	High Wind Watch	CYS	17 hr
Dec 23, 3:12 AM MST	High Wind Watch	CYS	9 hr
Dec 23, 12:33 PM MST	High Wind Warning	CYS	13 hr
Dec 24, 1:17 PM MST	Winter Weather Advisory	CYS	43 hr
Dec 25, 10:13 PM MST	Winter Storm Warning	CYS	7 hr
Dec 25, 10:13 PM MST	Winter Weather Advisory	CYS	11 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	35
Severe Thunderstorm Watch	5
Tornado Watch	2
Mesoscale Discussion	23
Special Weather Statement	43
Flooding
Areal Flood Warning	2
Flash Flood Warning	3
Flash Flood Watch	4
Areal Flood Advisory	3
Winter
Winter Storm Warning	9
Winter Storm Watch	5
Winter Weather Advisory	17
Cold
Freeze Warning	1
Frost Advisory	1
Wind Chill Advisory	1
Wind and dust
High Wind Warning	24
High Wind Watch	22
Fog and smoke
Dense Fog Advisory	1
Freezing Fog Advisory	1

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2014 2016

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.