Alert archive / Wisconsin / Pierce County

Weather alerts in Pierce County, Wisconsin, 2010

155 weather alerts in 2010, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Pierce County and its neighbors

Each county as a circle sized by its count in 2010. Tap one for its archive.

Alerts: 155
Warnings: 44
Watches: 29
Advisories: 33
Busiest month: August36 alerts
Busiest day: August 13, 201010 alerts

Over time

By month

Warning verification

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

1 of 2 tornado warnings covering Pierce County in 2010 had a tornado report inside them; 2 of 2 tornado reports fell inside a warning, on average 14 minutes after it went out.

Pierce County, 2010

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	2	1	50%	2	100%	14 min
Severe thunderstorm warnings	17	7	59%	7	86%	38 min
Flash flood warnings	4	2	50%	11	73%	57 min

Each office's whole area, 2010

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Twin Cities, MN: tornado warnings	97	33	66%	103	68%	19 min
NWS Twin Cities, MN: severe thunderstorm warnings	269	149	45%	542	68%	26 min
NWS Twin Cities, MN: flash flood warnings	25	15	40%	86	60%	71 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.

Issued	Product	Office	Lasted
Jan 1, 2:22 PM CST	Wind Chill Advisory	MPX	19 hr
Jan 7, 1:57 PM CST	Wind Chill Advisory	MPX	34 hr
Jan 18, 2:55 AM CST	Dense Fog Advisory	MPX	9 hr
Jan 18, 3:44 PM CST	Dense Fog Advisory	MPX	23 hr
Jan 21, 6:25 PM CST	Winter Weather Advisory	MPX	6 hr
Jan 22, 2:51 PM CST	Freezing Rain Advisory	MPX	21 hr
Feb 4, 2:10 PM CST	Winter Weather Advisory	MPX	25 hr
Feb 7, 3:15 PM CST	Winter Weather Advisory	MPX	51 hr
Feb 12, 3:55 PM CST	Dense Fog Advisory	MPX	20 hr
Feb 13, 9:50 AM CST	Winter Weather Advisory	MPX	50 hr
Mar 7, 2:55 PM CST	Dense Fog Advisory	MPX	18 hr
Mar 9, 12:27 AM CST	Dense Fog Advisory	MPX	9 hr
Mar 9, 4:10 PM CST	Dense Fog Advisory	MPX	41 hr
Mar 11, 2:41 PM CST	Dense Fog Advisory	MPX	21 hr
Mar 13, 2:59 PM CST	River Flood Watch	MPX	6 days
Mar 13, 3:54 PM CST	River Flood Watch	MPX	21 hr
Mar 14, 2:00 PM CDT	River Flood Warning	MPX	18 days
Mar 16, 9:12 PM CDT	River Flood Warning	MPX	6 days
Mar 17, 12:03 PM CDT	River Flood Warning	MPX	8 days
Mar 18, 11:44 AM CDT	River Flood Warning	MPX	6 days
Mar 30, 3:20 PM CDT	Red Flag Warning	MPX	18 min
Mar 30, 3:38 PM CDT	Red Flag Warning	MPX	2 hr
Apr 29, 7:00 PM CDT	Severe Thunderstorm Warning	MPX	30 min
Apr 30, 12:01 PM CDT	Mesoscale Discussion	SPC	29 min
May 4, 2:49 PM CDT	Mesoscale Discussion	SPC	56 min
May 8, 3:48 AM CDT	Freeze Warning	MPX	29 hr
May 25, 2:01 PM CDT	Severe Thunderstorm Warning	MPX	28 min
May 25, 7:50 PM CDT	Special Weather Statement	MPX	40 min
May 25, 8:30 PM CDT	Special Weather Statement	MPX	60 min
Jun 15, 1:23 PM CDT	Special Weather Statement	MPX	112 min
Jun 15, 2:01 PM CDT	Mesoscale Discussion	SPC	89 min
Jun 17, 4:46 PM CDT	Mesoscale Discussion	SPC	59 min
Jun 17, 5:50 PM CDT	Tornado Watch	SPC	7 hr
Jun 17, 7:39 PM CDT	Mesoscale Discussion	SPC	96 min
Jun 22, 2:44 AM CDT	Dense Fog Advisory	MPX	6 hr
Jun 22, 4:09 PM CDT	Mesoscale Discussion	SPC	96 min
Jun 22, 9:00 PM CDT	Severe Thunderstorm Watch	SPC	9 hr
Jun 22, 11:47 PM CDT	Mesoscale Discussion	SPC	88 min
Jun 23, 2:36 AM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jun 23, 2:58 AM CDT	Special Weather Statement	MPX	77 min
Jun 23, 2:48 PM CDT	Mesoscale Discussion	SPC	87 min
Jun 25, 3:35 PM CDT	Tornado Watch	SPC	8 hr
Jun 25, 5:57 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 25, 6:31 PM CDT	Severe Thunderstorm Warning	MPX	59 min
Jun 25, 7:09 PM CDT	Severe Thunderstorm Warning	MPX	36 min
Jun 25, 7:17 PM CDT	Tornado Warning	MPX	43 min
Jun 26, 4:34 AM CDT	Flash Flood Watch	MPX	22 hr
Jun 26, 7:56 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 26, 9:53 PM CDT	Severe Thunderstorm Warning	MPX	82 min
Jun 26, 10:14 PM CDT	Areal Flood Advisory	MPX	4 hr
Jun 26, 10:40 PM CDT	Severe Thunderstorm Warning	MPX	61 min
Jun 26, 10:57 PM CDT	Flash Flood Warning	MPX	3 hr
Jun 27, 12:31 AM CDT	Special Weather Statement	MPX	59 min
Jul 5, 11:49 AM CDT	Special Weather Statement	MPX	41 min
Jul 10, 11:41 AM CDT	Mesoscale Discussion	SPC	94 min
Jul 11, 4:25 PM CDT	Severe Thunderstorm Warning	MPX	39 min
Jul 11, 4:55 PM CDT	Severe Thunderstorm Warning	MPX	65 min
Jul 11, 6:39 PM CDT	Special Weather Statement	MPX	51 min
Jul 14, 3:12 AM CDT	Heat Advisory	MPX	15 hr
Jul 14, 8:26 AM CDT	Mesoscale Discussion	SPC	64 min
Jul 14, 9:00 AM CDT	Tornado Watch	SPC	9 hr
Jul 14, 12:34 PM CDT	Mesoscale Discussion	SPC	116 min
Jul 14, 2:33 PM CDT	Severe Thunderstorm Warning	MPX	44 min
Jul 14, 2:46 PM CDT	Tornado Warning	MPX	44 min
Jul 14, 2:55 PM CDT	Severe Thunderstorm Warning	MPX	65 min
Jul 14, 7:46 PM CDT	Severe Thunderstorm Warning	MPX	44 min
Jul 14, 8:09 PM CDT	Mesoscale Discussion	SPC	66 min
Jul 17, 11:58 AM CDT	Mesoscale Discussion	SPC	92 min
Jul 17, 12:28 PM CDT	Tornado Watch	SPC	11 hr
Jul 17, 5:56 PM CDT	Mesoscale Discussion	SPC	94 min
Jul 17, 8:44 PM CDT	Severe Thunderstorm Warning	MPX	61 min
Jul 20, 2:15 PM CDT	Mesoscale Discussion	SPC	60 min
Jul 23, 11:16 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jul 24, 1:28 AM CDT	Special Weather Statement	MPX	47 min
Jul 27, 3:29 PM CDT	Tornado Watch	SPC	7 hr
Jul 27, 7:05 PM CDT	Mesoscale Discussion	SPC	85 min
Jul 27, 8:16 PM CDT	Special Weather Statement	MPX	59 min
Jul 27, 9:01 PM CDT	Special Weather Statement	MPX	59 min
Jul 27, 9:07 PM CDT	Severe Thunderstorm Warning	MPX	38 min
Aug 4, 8:57 PM CDT	Special Weather Statement	MPX	63 min
Aug 7, 8:57 PM CDT	Mesoscale Discussion	SPC	93 min
Aug 7, 9:16 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Aug 7, 11:59 PM CDT	Tornado Watch	SPC	4 hr
Aug 8, 12:45 AM CDT	Special Weather Statement	MPX	90 min
Aug 8, 2:25 AM CDT	Mesoscale Discussion	SPC	65 min
Aug 8, 6:30 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Aug 8, 7:31 PM CDT	Severe Thunderstorm Warning	MPX	39 min
Aug 8, 11:19 PM CDT	Mesoscale Discussion	SPC	86 min
Aug 9, 4:22 AM CDT	Heat Advisory	MPX	16 hr
Aug 10, 5:08 PM CDT	Mesoscale Discussion	SPC	67 min
Aug 10, 11:01 PM CDT	Flash Flood Warning	MPX	3 hr
Aug 11, 2:21 AM CDT	Areal Flood Warning	MPX	3 hr
Aug 11, 6:14 AM CDT	Areal Flood Warning	MPX	6 hr
Aug 12, 10:03 AM CDT	Heat Advisory	MPX	9 hr
Aug 12, 4:37 PM CDT	Flash Flood Watch	MPX	29 hr
Aug 12, 6:41 PM CDT	Tornado Watch	SPC	4 hr
Aug 12, 8:29 PM CDT	Mesoscale Discussion	SPC	61 min
Aug 13, 12:48 AM CDT	Mesoscale Discussion	SPC	57 min
Aug 13, 1:19 AM CDT	Severe Thunderstorm Watch	SPC	4 hr
Aug 13, 3:30 AM CDT	Flash Flood Warning	MPX	3 hr
Aug 13, 3:41 AM CDT	Severe Thunderstorm Warning	MPX	64 min
Aug 13, 4:38 AM CDT	Severe Thunderstorm Warning	MPX	67 min
Aug 13, 5:27 AM CDT	Severe Thunderstorm Watch	SPC	8 hr
Aug 13, 12:04 PM CDT	Mesoscale Discussion	SPC	56 min
Aug 13, 2:39 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 13, 6:52 PM CDT	Special Weather Statement	MPX	53 min
Aug 13, 7:22 PM CDT	Mesoscale Discussion	SPC	53 min
Aug 14, 2:23 PM CDT	Mesoscale Discussion	SPC	67 min
Aug 14, 6:31 PM CDT	Mesoscale Discussion	SPC	59 min
Aug 18, 10:01 AM CDT	Mesoscale Discussion	SPC	119 min
Aug 18, 2:17 PM CDT	Mesoscale Discussion	SPC	118 min
Aug 21, 8:48 PM CDT	Dense Fog Advisory	MPX	12 hr
Aug 31, 5:59 PM CDT	Special Weather Statement	MPX	46 min
Aug 31, 6:04 PM CDT	Areal Flood Advisory	MPX	3 hr
Aug 31, 6:05 PM CDT	Severe Thunderstorm Warning	MPX	40 min
Sep 21, 2:04 AM CDT	Severe Thunderstorm Watch	SPC	5 hr
Sep 22, 4:00 AM CDT	Flood Watch	MPX	46 hr
Sep 22, 5:36 PM CDT	Mesoscale Discussion	SPC	54 min
Sep 22, 8:50 PM CDT	River Flood Watch	MPX	36 hr
Sep 23, 1:57 AM CDT	Areal Flood Warning	MPX	7 hr
Sep 23, 8:39 AM CDT	Flash Flood Warning	MPX	6 hr
Sep 23, 12:06 PM CDT	River Flood Watch	MPX	5 days
Sep 23, 12:06 PM CDT	River Flood Watch	MPX	5 days
Sep 23, 2:25 PM CDT	Areal Flood Warning	MPX	48 hr
Sep 23, 9:05 PM CDT	River Flood Warning	MPX	13 days
Sep 25, 2:42 PM CDT	Areal Flood Warning	MPX	4 days
Sep 27, 10:29 AM CDT	River Flood Warning	MPX	4 days
Sep 27, 10:29 AM CDT	River Flood Warning	MPX	4 days
Sep 29, 4:18 PM CDT	Areal Flood Warning	MPX	5 days
Oct 2, 3:14 AM CDT	Frost Advisory	MPX	30 hr
Oct 2, 3:15 PM CDT	Freeze Warning	MPX	18 hr
Oct 24, 3:57 PM CDT	High Wind Watch	MPX	24 hr
Oct 25, 3:58 PM CDT	High Wind Warning	MPX	47 hr
Nov 12, 3:40 PM CST	Winter Weather Advisory	MPX	36 hr
Nov 13, 2:28 AM CST	Mesoscale Discussion	SPC	5 hr
Nov 20, 3:04 PM CST	Freezing Rain Advisory	MPX	24 hr
Nov 21, 3:07 PM CST	Freezing Rain Advisory	MPX	27 hr
Nov 22, 2:32 AM CST	Mesoscale Discussion	SPC	6 hr
Nov 23, 3:23 PM CST	Winter Weather Advisory	MPX	32 hr
Nov 29, 4:46 AM CST	Winter Weather Advisory	MPX	40 hr
Dec 2, 3:20 AM CST	Winter Storm Watch	MPX	12 hr
Dec 2, 3:17 PM CST	Winter Storm Warning	MPX	39 hr
Dec 9, 3:00 PM CST	Winter Storm Watch	MPX	14 hr
Dec 10, 5:02 AM CST	Winter Storm Warning	MPX	49 hr
Dec 10, 6:19 PM CST	Mesoscale Discussion	SPC	5 hr
Dec 11, 1:47 AM CST	Mesoscale Discussion	SPC	6 hr
Dec 11, 9:56 AM CST	Mesoscale Discussion	SPC	5 hr
Dec 11, 4:13 PM CST	Wind Chill Advisory	MPX	20 hr
Dec 12, 3:59 PM CST	Wind Chill Advisory	MPX	17 hr
Dec 15, 3:29 AM CST	Winter Weather Advisory	MPX	36 hr
Dec 19, 3:28 AM CST	Winter Storm Watch	MPX	11 hr
Dec 19, 2:12 PM CST	Winter Storm Warning	MPX	38 hr
Dec 21, 3:49 AM CST	Winter Weather Advisory	MPX	12 hr
Dec 29, 11:33 AM CST	Dense Fog Advisory	MPX	15 hr
Dec 30, 2:53 PM CST	Winter Weather Advisory	MPX	45 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	17
Tornado Warning	2
Severe Thunderstorm Watch	10
Tornado Watch	7
Mesoscale Discussion	35
Special Weather Statement	14
Flooding
Areal Flood Warning	6
Flash Flood Warning	4
River Flood Warning	7
Flash Flood Watch	2
Flood Watch	1
River Flood Watch	5
Areal Flood Advisory	2
Winter
Winter Storm Warning	3
Winter Storm Watch	3
Freezing Rain Advisory	3
Winter Weather Advisory	10
Heat
Heat Advisory	3
Cold
Freeze Warning	2
Frost Advisory	1
Wind Chill Advisory	4
Wind and dust
High Wind Warning	1
High Wind Watch	1
Fire
Red Flag Warning	2
Fog and smoke
Dense Fog Advisory	10

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2009 2011

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.