Alert archive / Pennsylvania / Allegheny County

Weather alerts in Allegheny County, Pennsylvania, 2022

158 weather alerts in 2022, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Allegheny County and its neighbors

Each county as a circle sized by its count in 2022. Tap one for its archive.

Alerts: 158
Warnings: 48
Watches: 20
Advisories: 32
Busiest month: June29 alerts
Busiest day: June 22, 202211 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 Allegheny County in 2022 had a tornado report inside them.

Allegheny County, 2022

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	1	0	100%	0
Severe thunderstorm warnings	27	23	15%	52	79%	27 min
Flash flood warnings	6	5	17%	12	100%	31 min

Each office's whole area, 2022

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Pittsburgh, PA: tornado warnings	19	2	89%	5	60%	17 min
NWS Pittsburgh, PA: severe thunderstorm warnings	224	170	24%	543	85%	21 min
NWS Pittsburgh, PA: flash flood warnings	29	20	31%	45	98%	40 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, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.

Issued	Product	Office	Lasted
Jan 10, 11:13 PM EST	Special Weather Statement	PBZ	47 min
Jan 10, 11:58 PM EST	Special Weather Statement	PBZ	47 min
Jan 14, 4:09 AM EST	Winter Storm Watch	PBZ	32 hr
Jan 15, 12:33 PM EST	Winter Storm Warning	PBZ	54 hr
Jan 16, 4:24 PM EST	Mesoscale Discussion	SPC	6 hr
Jan 22, 2:43 PM EST	Winter Weather Advisory	PBZ	28 hr
Jan 23, 1:11 PM EST	Special Weather Statement	PBZ	94 min
Jan 28, 12:26 PM EST	Wind Chill Advisory	PBZ	45 hr
Feb 1, 3:09 AM EST	Winter Storm Watch	PBZ	35 hr
Feb 2, 1:50 PM EST	Winter Storm Warning	PBZ	44 hr
Feb 3, 11:22 AM EST	River Flood Advisory	PBZ	55 hr
Feb 3, 5:26 PM EST	Areal Flood Advisory	PBZ	7 hr
Feb 3, 5:55 PM EST	Mesoscale Discussion	SPC	4 hr
Feb 3, 10:50 PM EST	Mesoscale Discussion	SPC	4 hr
Feb 4, 6:55 AM EST	Areal Flood Warning	PBZ	12 hr
Feb 4, 5:20 PM EST	River Flood Warning	PBZ	9 hr
Feb 16, 9:12 PM EST	River Flood Watch	PBZ	3 days
Feb 17, 10:34 AM EST	River Flood Watch	PBZ	58 hr
Feb 17, 11:30 AM EST	River Flood Advisory	PBZ	65 hr
Feb 17, 8:54 PM EST	Areal Flood Advisory	PBZ	2 hr
Feb 18, 10:20 AM EST	River Flood Warning	PBZ	18 hr
Feb 18, 10:20 AM EST	River Flood Warning	PBZ	33 hr
Feb 19, 5:56 AM EST	Mesoscale Discussion	SPC	5 hr
Feb 19, 8:59 AM EST	Special Weather Statement	PBZ	46 min
Feb 19, 9:44 AM EST	Special Weather Statement	PBZ	46 min
Feb 21, 11:25 PM EST	Flood Watch	PBZ	18 hr
Feb 22, 3:10 PM EST	River Flood Advisory	PBZ	21 days
Feb 25, 4:15 AM EST	Areal Flood Advisory	PBZ	6 hr
Mar 7, 11:37 AM EST	River Flood Advisory	PBZ	23 hr
Mar 7, 3:38 PM EST	Special Weather Statement	PBZ	52 min
Mar 7, 3:53 PM EST	Mesoscale Discussion	SPC	2 hr
Mar 7, 4:28 PM EST	Severe Thunderstorm Warning	PBZ	47 min
Mar 10, 2:43 AM EST	Winter Storm Watch	PBZ	25 hr
Mar 11, 3:32 AM EST	Winter Weather Advisory	PBZ	31 hr
Mar 12, 2:33 AM EST	Mesoscale Discussion	SPC	6 hr
Mar 23, 2:35 PM EDT	Tornado Watch	SPC	7 hr
Mar 26, 7:48 AM EDT	Special Weather Statement	PBZ	27 min
Mar 28, 10:21 AM EDT	Special Weather Statement	PBZ	54 min
Mar 29, 12:52 PM EDT	Winter Weather Advisory	PBZ	21 hr
Mar 31, 11:06 AM EDT	Special Weather Statement	PBZ	39 min
Mar 31, 11:16 AM EDT	Severe Thunderstorm Warning	PBZ	44 min
Apr 1, 8:02 AM EDT	Special Weather Statement	PBZ	43 min
Apr 14, 8:40 AM EDT	Special Weather Statement	PBZ	65 min
Apr 14, 9:37 AM EDT	Special Weather Statement	PBZ	83 min
Apr 15, 6:30 AM EDT	Wind Advisory	PBZ	13 hr
Apr 26, 11:41 AM EDT	Frost Advisory	PBZ	18 hr
Apr 27, 3:02 AM EDT	Freeze Warning	PBZ	30 hr
Apr 28, 11:49 AM EDT	Freeze Warning	PBZ	21 hr
May 3, 2:29 PM EDT	Tornado Watch	SPC	7 hr
May 3, 5:35 PM EDT	Severe Thunderstorm Warning	PBZ	25 min
May 3, 5:49 PM EDT	Tornado Warning	PBZ	26 min
May 3, 6:11 PM EDT	Severe Thunderstorm Warning	PBZ	22 min
May 3, 6:29 PM EDT	Severe Thunderstorm Warning	PBZ	31 min
May 6, 7:29 AM EDT	Flood Watch	PBZ	25 hr
May 6, 9:01 AM EDT	Areal Flood Advisory	PBZ	3 hr
May 6, 11:05 AM EDT	River Flood Advisory	PBZ	71 hr
May 6, 11:46 AM EDT	Areal Flood Advisory	PBZ	2 hr
May 16, 7:08 PM EDT	Special Weather Statement	PBZ	37 min
May 16, 7:45 PM EDT	Special Weather Statement	PBZ	45 min
May 21, 8:04 PM EDT	Special Weather Statement	PBZ	26 min
May 21, 8:09 PM EDT	Severe Thunderstorm Warning	PBZ	36 min
Jun 1, 1:00 PM EDT	Mesoscale Discussion	SPC	90 min
Jun 1, 2:19 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
Jun 1, 4:47 PM EDT	Mesoscale Discussion	SPC	88 min
Jun 1, 7:04 PM EDT	Mesoscale Discussion	SPC	86 min
Jun 1, 7:41 PM EDT	Special Weather Statement	PBZ	49 min
Jun 7, 2:09 PM EDT	Mesoscale Discussion	SPC	2 hr
Jun 7, 6:36 PM EDT	Special Weather Statement	PBZ	24 min
Jun 7, 6:40 PM EDT	Special Weather Statement	PBZ	35 min
Jun 8, 6:26 PM EDT	Mesoscale Discussion	SPC	2 hr
Jun 8, 10:30 PM EDT	Severe Thunderstorm Warning	PBZ	19 min
Jun 8, 10:51 PM EDT	Special Weather Statement	PBZ	24 min
Jun 8, 11:21 PM EDT	Special Weather Statement	PBZ	39 min
Jun 13, 11:42 PM EDT	Mesoscale Discussion	SPC	2 hr
Jun 14, 12:45 AM EDT	Severe Thunderstorm Watch	SPC	5 hr
Jun 14, 1:28 AM EDT	Special Weather Statement	PBZ	47 min
Jun 14, 1:17 PM EDT	Heat Advisory	PBZ	32 hr
Jun 16, 2:14 PM EDT	Severe Thunderstorm Watch	SPC	11 hr
Jun 16, 3:31 PM EDT	Mesoscale Discussion	SPC	89 min
Jun 22, 2:24 PM EDT	Mesoscale Discussion	SPC	96 min
Jun 22, 3:25 PM EDT	Severe Thunderstorm Warning	PBZ	35 min
Jun 22, 3:40 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 22, 3:59 PM EDT	Severe Thunderstorm Warning	PBZ	31 min
Jun 22, 4:15 PM EDT	Severe Thunderstorm Warning	PBZ	30 min
Jun 22, 4:26 PM EDT	Severe Thunderstorm Warning	PBZ	49 min
Jun 22, 4:43 PM EDT	Severe Thunderstorm Warning	PBZ	47 min
Jun 22, 4:54 PM EDT	Mesoscale Discussion	SPC	96 min
Jun 22, 5:02 PM EDT	Severe Thunderstorm Warning	PBZ	43 min
Jun 22, 5:14 PM EDT	Severe Thunderstorm Warning	PBZ	31 min
Jun 22, 5:42 PM EDT	Severe Thunderstorm Warning	PBZ	48 min
Jul 1, 8:35 PM EDT	Mesoscale Discussion	SPC	85 min
Jul 13, 7:45 PM EDT	Special Weather Statement	PBZ	45 min
Jul 17, 5:30 AM EDT	Flash Flood Warning	PBZ	3 hr
Jul 17, 6:00 AM EDT	Areal Flood Advisory	PBZ	2 hr
Jul 17, 9:58 AM EDT	Flood Watch	PBZ	22 hr
Jul 22, 12:50 PM EDT	Mesoscale Discussion	SPC	115 min
Jul 23, 11:39 AM EDT	Severe Thunderstorm Watch	SPC	4 hr
Jul 23, 1:44 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 23, 1:50 PM EDT	Severe Thunderstorm Warning	PBZ	40 min
Jul 23, 2:06 PM EDT	Severe Thunderstorm Warning	PBZ	39 min
Jul 23, 2:26 PM EDT	Severe Thunderstorm Warning	PBZ	49 min
Jul 23, 2:38 PM EDT	Severe Thunderstorm Warning	PBZ	37 min
Jul 23, 3:02 PM EDT	Severe Thunderstorm Warning Considerable damage threat	PBZ	43 min
Jul 23, 3:37 PM EDT	Mesoscale Discussion	SPC	113 min
Jul 24, 6:59 AM EDT	Special Weather Statement	PBZ	31 min
Jul 24, 7:13 AM EDT	Special Weather Statement	PBZ	32 min
Jul 25, 5:36 AM EDT	Special Weather Statement	PBZ	24 min
Jul 25, 5:47 AM EDT	Flash Flood Warning	PBZ	3 hr
Jul 25, 5:55 AM EDT	Severe Thunderstorm Warning	PBZ	35 min
Jul 25, 6:09 AM EDT	Severe Thunderstorm Warning	PBZ	36 min
Jul 25, 6:21 AM EDT	Special Weather Statement	PBZ	24 min
Jul 28, 10:39 AM EDT	Areal Flood Advisory	PBZ	2 hr
Jul 28, 12:50 PM EDT	Flash Flood Warning	PBZ	115 min
Aug 4, 9:06 AM EDT	Special Weather Statement	PBZ	24 min
Aug 4, 2:23 PM EDT	Severe Thunderstorm Warning	PBZ	20 min
Aug 4, 2:42 PM EDT	Special Weather Statement	PBZ	48 min
Aug 4, 3:18 PM EDT	Severe Thunderstorm Warning	PBZ	42 min
Aug 5, 2:20 PM EDT	Areal Flood Advisory	PBZ	73 min
Aug 5, 5:01 PM EDT	Special Weather Statement	PBZ	29 min
Aug 5, 5:07 PM EDT	Flash Flood Warning	PBZ	113 min
Aug 5, 6:32 PM EDT	Flash Flood Warning	PBZ	2 hr
Aug 21, 7:39 AM EDT	Areal Flood Advisory	PBZ	3 hr
Aug 21, 9:12 AM EDT	Areal Flood Advisory	PBZ	3 hr
Aug 29, 3:42 PM EDT	Flash Flood Warning	PBZ	96 min
Aug 29, 4:05 PM EDT	Special Weather Statement	PBZ	25 min
Aug 29, 4:13 PM EDT	Severe Thunderstorm Warning	PBZ	34 min
Sep 5, 3:04 AM EDT	Flood Watch	PBZ	20 hr
Sep 5, 7:07 PM EDT	Areal Flood Advisory	PBZ	2 hr
Sep 25, 2:51 PM EDT	Mesoscale Discussion	SPC	84 min
Oct 8, 9:09 AM EDT	Frost Advisory	PBZ	24 hr
Oct 16, 9:13 AM EDT	Freeze Watch	PBZ	27 hr
Oct 19, 3:22 AM EDT	Freeze Watch	PBZ	8 hr
Oct 19, 11:38 AM EDT	Freeze Warning	PBZ	21 hr
Nov 2, 2:19 AM EDT	Dense Fog Advisory	PBZ	8 hr
Nov 2, 10:58 PM EDT	Dense Fog Advisory	PBZ	12 hr
Nov 11, 7:14 PM EST	Areal Flood Advisory	PBZ	4 hr
Nov 11, 8:34 PM EST	Areal Flood Advisory	PBZ	3 hr
Nov 12, 3:19 PM EST	River Flood Advisory	PBZ	5 hr
Nov 16, 11:15 PM EST	Special Weather Statement	PBZ	45 min
Nov 18, 12:30 PM EST	Snow Squall Warning	PBZ	45 min
Nov 18, 1:09 PM EST	Snow Squall Warning	PBZ	51 min
Nov 18, 1:50 PM EST	Snow Squall Warning	PBZ	55 min
Nov 18, 1:53 PM EST	Mesoscale Discussion	SPC	4 hr
Nov 18, 2:56 PM EST	Snow Squall Warning	PBZ	64 min
Nov 27, 12:19 PM EST	Mesoscale Discussion	SPC	116 min
Nov 27, 2:29 PM EST	Severe Thunderstorm Warning	PBZ	46 min
Nov 27, 2:41 PM EST	Severe Thunderstorm Warning	PBZ	35 min
Nov 27, 3:06 PM EST	Special Weather Statement	PBZ	54 min
Nov 30, 10:01 AM EST	Special Weather Statement	PBZ	44 min
Dec 3, 11:22 AM EST	Special Weather Statement	PBZ	38 min
Dec 3, 11:55 AM EST	Special Weather Statement	PBZ	50 min
Dec 21, 2:35 PM EST	Wind Chill Watch	PBZ	20 hr
Dec 22, 3:02 AM EST	High Wind Watch	PBZ	8 hr
Dec 22, 11:01 AM EST	Wind Chill Warning	PBZ	62 hr
Dec 22, 11:01 AM EST	Winter Weather Advisory	PBZ	25 hr
Dec 22, 11:04 AM EST	Wind Advisory	PBZ	40 hr
Dec 23, 7:49 AM EST	Mesoscale Discussion	SPC	4 hr
Dec 24, 9:09 AM EST	Wind Chill Advisory	PBZ	16 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	27
Tornado Warning	1
Severe Thunderstorm Watch	5
Tornado Watch	2
Mesoscale Discussion	23
Special Weather Statement	35
Flooding
Areal Flood Warning	1
Flash Flood Warning	6
River Flood Warning	3
Flood Watch	4
River Flood Watch	2
Areal Flood Advisory	13
River Flood Advisory	6
Winter
Snow Squall Warning	4
Winter Storm Warning	2
Winter Storm Watch	3
Winter Weather Advisory	4
Heat
Heat Advisory	1
Cold
Freeze Warning	3
Wind Chill Warning	1
Freeze Watch	2
Wind Chill Watch	1
Frost Advisory	2
Wind Chill Advisory	2
Wind and dust
High Wind Watch	1
Wind Advisory	2
Fog and smoke
Dense Fog Advisory	2

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2021 2023

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.