Alert archive / Pennsylvania / Crawford County

Weather alerts in Crawford County, Pennsylvania, 2011

155 weather alerts in 2011, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Crawford County and its neighbors

Each county as a circle sized by its count in 2011. Tap one for its archive.

Alerts: 155
Warnings: 43
Watches: 31
Advisories: 46
Busiest month: May31 alerts
Busiest day: May 26, 20119 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 1 tornado warnings covering Crawford County in 2011 had a tornado report inside them; 1 of 1 tornado reports fell inside a warning, on average 2 minutes after it went out.

Crawford County, 2011

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	1	1	0%	1	100%	2 min
Severe thunderstorm warnings	22	13	41%	14	79%	16 min
Flash flood warnings	1	1	0%	2	100%	157 min

Each office's whole area, 2011

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Cleveland, OH: tornado warnings	26	1	96%	3	33%	2 min
NWS Cleveland, OH: severe thunderstorm warnings	300	189	37%	448	85%	24 min
NWS Cleveland, OH: flash flood warnings	41	13	68%	27	89%	82 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 1, 4:57 PM EST	Areal Flood Advisory	CLE	12 hr
Jan 2, 5:50 PM EST	Areal Flood Advisory	CLE	42 hr
Jan 6, 3:31 PM EST	Winter Weather Advisory	CLE	6 hr
Jan 6, 9:45 PM EST	Lake Effect Snow Warning	CLE	13 hr
Jan 7, 3:30 AM EST	Lake Effect Snow Watch	CLE	24 hr
Jan 7, 3:18 PM EST	Lake Effect Snow Warning	CLE	44 hr
Jan 10, 2:48 PM EST	Winter Weather Advisory	CLE	61 hr
Jan 17, 3:14 PM EST	Freezing Rain Advisory	CLE	20 hr
Jan 19, 3:56 AM EST	Freezing Rain Advisory	CLE	8 hr
Jan 19, 2:54 PM EST	Winter Weather Advisory	CLE	54 hr
Jan 30, 3:14 PM EST	Winter Storm Watch	CLE	25 hr
Jan 31, 2:54 PM EST	Winter Storm Warning	CLE	42 hr
Feb 1, 12:12 AM EST	Mesoscale Discussion	SPC	5 hr
Feb 1, 8:39 PM EST	Mesoscale Discussion	SPC	6 hr
Feb 2, 8:54 AM EST	Winter Weather Advisory	CLE	6 hr
Feb 5, 3:54 AM EST	Winter Weather Advisory	CLE	18 hr
Feb 10, 3:24 PM EST	Wind Chill Advisory	CLE	17 hr
Feb 13, 11:05 PM EST	Wind Advisory	CLE	16 hr
Feb 18, 5:48 PM EST	Areal Flood Advisory	CLE	18 hr
Feb 18, 9:24 PM EST	Wind Advisory	CLE	13 hr
Feb 20, 3:52 AM EST	Winter Weather Advisory	CLE	47 hr
Feb 20, 2:37 PM EST	Winter Storm Warning	CLE	20 hr
Feb 20, 7:46 PM EST	Mesoscale Discussion	SPC	4 hr
Feb 20, 11:50 PM EST	Mesoscale Discussion	SPC	5 hr
Feb 23, 3:38 PM EST	Winter Storm Watch	CLE	23 hr
Feb 23, 11:19 PM EST	Winter Weather Advisory	CLE	11 hr
Feb 24, 3:54 AM EST	Winter Storm Warning	CLE	36 hr
Feb 25, 2:46 AM EST	Mesoscale Discussion	SPC	4 hr
Feb 27, 3:42 AM EST	Flood Watch	CLE	35 hr
Feb 28, 1:54 AM EST	Areal Flood Warning	CLE	12 hr
Feb 28, 10:18 AM EST	Areal Flood Warning	CLE	50 hr
Mar 3, 11:43 AM EST	Flood Watch	CLE	50 hr
Mar 4, 6:04 AM EST	Freezing Rain Advisory	CLE	4 hr
Mar 5, 9:15 AM EST	Areal Flood Warning	CLE	24 hr
Mar 5, 1:48 PM EST	Flood Watch	CLE	7 hr
Mar 5, 3:22 PM EST	Winter Weather Advisory	CLE	21 hr
Mar 6, 8:59 AM EST	Areal Flood Warning	CLE	6 hr
Mar 6, 8:09 PM EST	River Flood Warning	CLE	20 hr
Mar 9, 3:19 PM EST	Winter Storm Watch	CLE	24 hr
Mar 10, 9:00 AM EST	Areal Flood Warning	CLE	10 hr
Mar 10, 2:51 PM EST	Winter Storm Warning	CLE	31 hr
Mar 10, 6:48 PM EST	Areal Flood Warning	CLE	41 hr
Mar 12, 11:59 AM EST	Areal Flood Advisory	CLE	24 hr
Mar 23, 2:50 PM EDT	Freezing Rain Advisory	CLE	13 hr
Mar 31, 8:31 AM EDT	Dense Fog Advisory	CLE	5 hr
Apr 4, 9:18 AM EDT	Severe Thunderstorm Warning	CLE	42 min
Apr 15, 3:34 PM EDT	Wind Advisory	CLE	22 hr
Apr 16, 1:34 PM EDT	Mesoscale Discussion	SPC	116 min
Apr 16, 3:49 PM EDT	Wind Advisory	CLE	28 hr
Apr 20, 12:18 AM EDT	Severe Thunderstorm Watch	SPC	4 hr
Apr 20, 3:20 AM EDT	Mesoscale Discussion	SPC	85 min
Apr 20, 11:31 AM EDT	Wind Advisory	CLE	4 hr
Apr 25, 12:48 PM EDT	Flood Watch	CLE	63 hr
Apr 25, 1:52 PM EDT	Mesoscale Discussion	SPC	83 min
Apr 25, 2:47 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Apr 27, 1:24 PM EDT	Mesoscale Discussion	SPC	96 min
Apr 27, 3:46 PM EDT	Severe Thunderstorm Warning	CLE	59 min
Apr 27, 9:32 PM EDT	Wind Advisory	CLE	6 hr
Apr 28, 3:55 AM EDT	High Wind Warning	CLE	6 hr
Apr 28, 9:55 AM EDT	Wind Advisory	CLE	6 hr
May 4, 3:45 AM EDT	Frost Advisory	CLE	29 hr
May 12, 11:04 AM EDT	Severe Thunderstorm Watch	SPC	8 hr
May 13, 3:18 PM EDT	Areal Flood Advisory	CLE	3 hr
May 13, 3:50 PM EDT	Areal Flood Warning	CLE	4 hr
May 13, 3:53 PM EDT	Severe Thunderstorm Warning	CLE	67 min
May 13, 7:55 PM EDT	Areal Flood Advisory	CLE	3 hr
May 14, 4:19 AM EDT	Flash Flood Watch	CLE	19 hr
May 14, 9:21 PM EDT	Flash Flood Warning	CLE	4 hr
May 15, 1:32 AM EDT	Areal Flood Advisory	CLE	6 hr
May 15, 10:34 AM EDT	Areal Flood Warning	CLE	9 hr
May 23, 8:25 AM EDT	Mesoscale Discussion	SPC	65 min
May 23, 8:07 PM EDT	Mesoscale Discussion	SPC	83 min
May 23, 8:31 PM EDT	Severe Thunderstorm Watch	SPC	3 hr
May 25, 1:55 PM EDT	Tornado Watch	SPC	8 hr
May 25, 7:50 PM EDT	Severe Thunderstorm Warning	CLE	55 min
May 25, 8:14 PM EDT	Mesoscale Discussion	SPC	2 hr
May 25, 8:17 PM EDT	Areal Flood Warning	CLE	10 hr
May 25, 8:37 PM EDT	Severe Thunderstorm Warning	CLE	53 min
May 25, 9:25 PM EDT	Severe Thunderstorm Warning	CLE	35 min
May 26, 12:53 AM EDT	Severe Thunderstorm Warning	CLE	67 min
May 26, 11:02 AM EDT	Flood Watch	CLE	11 hr
May 26, 4:39 PM EDT	Severe Thunderstorm Warning	CLE	66 min
May 26, 4:53 PM EDT	Tornado Warning	CLE	52 min
May 26, 6:06 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
May 26, 8:11 PM EDT	Severe Thunderstorm Warning	CLE	49 min
May 27, 3:05 PM EDT	Areal Flood Advisory	CLE	4 hr
May 29, 6:05 PM EDT	Mesoscale Discussion	SPC	25 min
May 29, 6:17 PM EDT	Severe Thunderstorm Watch	SPC	5 hr
May 29, 7:28 PM EDT	Mesoscale Discussion	SPC	62 min
May 29, 7:56 PM EDT	Severe Thunderstorm Warning	CLE	64 min
May 31, 4:07 PM EDT	Mesoscale Discussion	SPC	113 min
Jun 4, 12:37 PM EDT	Severe Thunderstorm Warning	CLE	38 min
Jun 7, 5:29 AM EDT	Mesoscale Discussion	SPC	3 hr
Jun 7, 6:47 AM EDT	Severe Thunderstorm Watch	SPC	5 hr
Jun 7, 6:56 AM EDT	Severe Thunderstorm Warning	CLE	64 min
Jun 7, 8:22 AM EDT	Mesoscale Discussion	SPC	113 min
Jun 8, 1:51 AM EDT	Severe Thunderstorm Watch	SPC	3 hr
Jun 9, 3:29 AM EDT	Mesoscale Discussion	SPC	2 hr
Jun 9, 3:56 AM EDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 9, 8:13 AM EDT	Mesoscale Discussion	SPC	2 hr
Jun 9, 10:36 AM EDT	Mesoscale Discussion	SPC	84 min
Jun 16, 3:59 PM EDT	Severe Thunderstorm Warning	CLE	61 min
Jun 23, 12:33 PM EDT	Mesoscale Discussion	SPC	117 min
Jun 28, 1:19 PM EDT	Mesoscale Discussion	SPC	86 min
Jul 2, 9:01 PM EDT	Mesoscale Discussion	SPC	59 min
Jul 11, 3:43 PM EDT	Mesoscale Discussion	SPC	92 min
Jul 18, 12:17 PM EDT	Severe Thunderstorm Warning	CLE	43 min
Jul 18, 3:57 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 18, 8:02 PM EDT	Mesoscale Discussion	SPC	58 min
Jul 20, 3:49 AM EDT	Excessive Heat Watch	CLE	10 hr
Jul 20, 2:15 PM EDT	Excessive Heat Warning	CLE	31 hr
Jul 20, 2:15 PM EDT	Heat Advisory	CLE	20 hr
Jul 25, 11:12 AM EDT	Mesoscale Discussion	SPC	63 min
Jul 25, 11:37 AM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 28, 4:03 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 29, 3:31 AM EDT	Mesoscale Discussion	SPC	89 min
Jul 29, 3:56 AM EDT	Severe Thunderstorm Watch	SPC	5 hr
Aug 1, 3:47 AM EDT	Mesoscale Discussion	SPC	58 min
Aug 1, 8:01 AM EDT	Mesoscale Discussion	SPC	89 min
Aug 9, 6:56 PM EDT	Severe Thunderstorm Watch	SPC	5 hr
Aug 9, 8:31 PM EDT	Mesoscale Discussion	SPC	89 min
Aug 13, 3:37 PM EDT	Flood Watch	CLE	47 hr
Aug 15, 10:11 AM EDT	Areal Flood Advisory	CLE	3 hr
Aug 15, 1:03 PM EDT	Areal Flood Advisory	CLE	3 hr
Aug 18, 9:38 PM EDT	Severe Thunderstorm Warning	CLE	67 min
Aug 19, 5:39 AM EDT	Severe Thunderstorm Warning	CLE	66 min
Aug 19, 6:45 AM EDT	Severe Thunderstorm Warning	CLE	45 min
Aug 21, 2:17 AM EDT	Severe Thunderstorm Warning	CLE	58 min
Aug 24, 9:18 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 24, 10:27 PM EDT	Tornado Watch	SPC	5 hr
Aug 24, 11:48 PM EDT	Mesoscale Discussion	SPC	87 min
Aug 25, 12:41 AM EDT	Severe Thunderstorm Warning	CLE	79 min
Aug 25, 1:35 AM EDT	Areal Flood Advisory	CLE	3 hr
Sep 10, 4:34 AM EDT	Areal Flood Advisory	CLE	5 hr
Sep 13, 6:17 PM EDT	Severe Thunderstorm Warning	CLE	28 min
Sep 13, 6:56 PM EDT	Severe Thunderstorm Warning	CLE	64 min
Sep 13, 7:00 PM EDT	Mesoscale Discussion	SPC	60 min
Sep 13, 7:01 PM EDT	Areal Flood Advisory	CLE	2 hr
Sep 25, 6:34 PM EDT	Mesoscale Discussion	SPC	86 min
Sep 26, 2:16 PM EDT	Mesoscale Discussion	SPC	59 min
Sep 26, 6:16 PM EDT	Severe Thunderstorm Warning	CLE	59 min
Oct 14, 3:19 PM EDT	Wind Advisory	CLE	27 hr
Oct 22, 3:16 PM EDT	Frost Advisory	CLE	18 hr
Oct 27, 3:40 PM EDT	Freeze Warning	CLE	18 hr
Oct 30, 3:25 AM EDT	Dense Fog Advisory	CLE	7 hr
Nov 10, 3:28 PM EST	Lake Effect Snow Advisory	CLE	19 hr
Nov 13, 3:42 AM EST	Wind Advisory	CLE	14 hr
Nov 14, 3:29 PM EST	Tornado Watch	SPC	6 hr
Nov 14, 4:38 PM EST	Mesoscale Discussion	SPC	2 hr
Nov 14, 5:10 PM EST	Areal Flood Advisory	CLE	6 hr
Nov 29, 12:02 PM EST	Areal Flood Advisory	CLE	4 hr
Dec 8, 3:30 PM EST	Winter Weather Advisory	CLE	19 hr
Dec 9, 10:03 AM EST	Lake Effect Snow Advisory	CLE	24 hr
Dec 27, 3:37 AM EST	Lake Effect Snow Watch	CLE	12 hr
Dec 27, 3:37 AM EST	Winter Weather Advisory	CLE	27 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	22
Tornado Warning	1
Severe Thunderstorm Watch	15
Tornado Watch	3
Mesoscale Discussion	35
Flooding
Areal Flood Warning	9
Flash Flood Warning	1
River Flood Warning	1
Flash Flood Watch	1
Flood Watch	6
Areal Flood Advisory	15
Winter
Lake Effect Snow Warning	2
Winter Storm Warning	4
Lake Effect Snow Watch	2
Winter Storm Watch	3
Freezing Rain Advisory	4
Lake Effect Snow Advisory	2
Winter Weather Advisory	10
Heat
Excessive Heat Warning	1
Excessive Heat Watch	1
Heat Advisory	1
Cold
Freeze Warning	1
Frost Advisory	2
Wind Chill Advisory	1
Wind and dust
High Wind Warning	1
Wind Advisory	9
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 2010 2012

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.