Alert archive / New York / Tompkins County

Weather alerts in Tompkins County, New York, 2011

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

Tompkins County and its neighbors

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

Alerts: 172
Warnings: 51
Watches: 29
Advisories: 32
Busiest month: May31 alerts
Busiest day: May 26, 201111 alerts

Over time

By month

Warning verification

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

2 of 5 tornado warnings covering Tompkins County in 2011 had a tornado report inside them; 2 of 2 tornado reports fell inside a warning, on average 12 minutes after it went out.

Tompkins County, 2011

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	5	2	60%	2	100%	12 min
Severe thunderstorm warnings	31	21	32%	13	69%	27 min
Flash flood warnings	5	3	40%	2	100%	164 min

Each office's whole area, 2011

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Binghamton, NY: tornado warnings	32	10	69%	22	68%	13 min
NWS Binghamton, NY: severe thunderstorm warnings	253	156	38%	419	85%	25 min
NWS Binghamton, NY: flash flood warnings	128	66	48%	210	88%	144 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 6, 3:14 PM EST	Winter Weather Advisory	BGM	24 hr
Jan 8, 3:13 PM EST	Lake Effect Snow Advisory	BGM	36 hr
Jan 11, 3:34 AM EST	Winter Weather Advisory	BGM	32 hr
Jan 12, 11:11 AM EST	Lake Effect Snow Advisory	BGM	26 hr
Jan 23, 1:21 PM EST	Wind Chill Advisory	BGM	9 hr
Jan 31, 4:41 AM EST	Winter Storm Watch	BGM	10 hr
Jan 31, 3:07 PM EST	Winter Storm Warning	BGM	42 hr
Jan 31, 3:07 PM EST	Winter Weather Advisory	BGM	25 hr
Feb 1, 2:42 AM EST	Mesoscale Discussion	SPC	4 hr
Feb 2, 8:58 AM EST	Winter Weather Advisory	BGM	4 hr
Feb 2, 3:02 PM EST	Lake Effect Snow Advisory	BGM	12 hr
Feb 4, 2:17 PM EST	Winter Weather Advisory	BGM	36 hr
Feb 5, 1:22 PM EST	Mesoscale Discussion	SPC	4 hr
Feb 7, 3:30 PM EST	Winter Weather Advisory	BGM	16 hr
Feb 14, 9:21 AM EST	Wind Advisory	BGM	13 hr
Feb 18, 3:45 AM EST	Wind Advisory	BGM	19 hr
Feb 18, 10:11 PM EST	High Wind Warning	BGM	16 hr
Feb 19, 8:38 AM EST	Lake Effect Snow Advisory	BGM	13 hr
Feb 19, 2:36 PM EST	Wind Advisory	BGM	7 hr
Feb 20, 4:03 AM EST	Winter Weather Advisory	BGM	30 hr
Feb 20, 11:50 PM EST	Mesoscale Discussion	SPC	5 hr
Feb 24, 3:31 PM EST	Winter Storm Warning	BGM	25 hr
Feb 25, 2:46 AM EST	Mesoscale Discussion	SPC	4 hr
Feb 25, 4:28 AM EST	Mesoscale Discussion	SPC	6 hr
Feb 28, 5:08 AM EST	Flood Watch	BGM	5 hr
Mar 4, 12:12 PM EST	Flood Watch	BGM	61 hr
Mar 5, 3:56 AM EST	Winter Storm Watch	BGM	24 hr
Mar 6, 4:11 AM EST	Winter Storm Warning	BGM	31 hr
Mar 6, 7:32 PM EST	Mesoscale Discussion	SPC	4 hr
Mar 9, 11:56 AM EST	Flood Watch	BGM	42 hr
Mar 22, 3:57 PM EDT	Winter Storm Warning	BGM	30 hr
Mar 22, 3:57 PM EDT	Winter Weather Advisory	BGM	39 hr
Apr 11, 6:43 PM EDT	Mesoscale Discussion	SPC	62 min
Apr 15, 3:12 PM EDT	Wind Advisory	BGM	24 hr
Apr 17, 4:02 AM EDT	Wind Advisory	BGM	16 hr
Apr 26, 1:18 PM EDT	Mesoscale Discussion	SPC	57 min
Apr 26, 1:49 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Apr 26, 4:12 PM EDT	Mesoscale Discussion	SPC	63 min
Apr 26, 5:10 PM EDT	Flash Flood Watch	BGM	9 hr
Apr 26, 6:51 PM EDT	Mesoscale Discussion	SPC	54 min
Apr 27, 11:25 AM EDT	Flash Flood Watch	BGM	27 hr
Apr 27, 3:10 PM EDT	Tornado Watch	SPC	7 hr
Apr 27, 6:50 PM EDT	Mesoscale Discussion	SPC	55 min
Apr 27, 7:50 PM EDT	Severe Thunderstorm Warning	BGM	55 min
Apr 27, 7:56 PM EDT	Tornado Warning	BGM	64 min
Apr 27, 8:44 PM EDT	Severe Thunderstorm Warning	BGM	61 min
Apr 27, 9:03 PM EDT	Mesoscale Discussion	SPC	57 min
Apr 28, 1:05 AM EDT	Areal Flood Advisory	BGM	6 hr
Apr 28, 1:22 AM EDT	Severe Thunderstorm Warning	BGM	53 min
Apr 28, 1:28 AM EDT	Tornado Warning	BGM	32 min
Apr 28, 1:53 AM EDT	Tornado Warning	BGM	52 min
Apr 28, 2:20 AM EDT	Mesoscale Discussion	SPC	55 min
Apr 28, 3:29 AM EDT	Flash Flood Warning	BGM	10 hr
Apr 28, 9:12 AM EDT	Wind Advisory	BGM	7 hr
Apr 29, 5:23 PM EDT	River Flood Warning	BGM	5 days
May 2, 3:31 PM EDT	Flood Watch	BGM	42 hr
May 4, 12:26 PM EDT	River Flood Warning	BGM	6 days
May 7, 1:15 PM EDT	Special Weather Statement	BGM	45 min
May 9, 2:52 PM EDT	Frost Advisory	BGM	17 hr
May 19, 10:47 AM EDT	Mesoscale Discussion	SPC	88 min
May 19, 12:20 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
May 19, 2:17 PM EDT	Mesoscale Discussion	SPC	58 min
May 26, 12:32 AM EDT	Severe Thunderstorm Warning	BGM	43 min
May 26, 1:20 AM EDT	Severe Thunderstorm Warning	BGM	55 min
May 26, 11:55 AM EDT	Mesoscale Discussion	SPC	95 min
May 26, 2:16 PM EDT	Tornado Watch	SPC	8 hr
May 26, 2:57 PM EDT	Mesoscale Discussion	SPC	63 min
May 26, 4:43 PM EDT	Severe Thunderstorm Warning	BGM	62 min
May 26, 4:50 PM EDT	Severe Thunderstorm Warning	BGM	55 min
May 26, 5:05 PM EDT	Severe Thunderstorm Warning	BGM	40 min
May 26, 6:15 PM EDT	Severe Thunderstorm Warning	BGM	17 min
May 26, 6:41 PM EDT	Mesoscale Discussion	SPC	64 min
May 26, 7:50 PM EDT	Severe Thunderstorm Warning	BGM	40 min
May 26, 8:24 PM EDT	Severe Thunderstorm Warning	BGM	51 min
May 26, 8:39 PM EDT	Tornado Warning	BGM	36 min
May 26, 8:47 PM EDT	Severe Thunderstorm Warning	BGM	58 min
May 27, 12:57 PM EDT	Severe Thunderstorm Watch	SPC	9 hr
May 27, 6:14 PM EDT	Mesoscale Discussion	SPC	2 hr
May 27, 7:43 PM EDT	Flash Flood Watch	BGM	7 hr
May 27, 7:52 PM EDT	Severe Thunderstorm Warning	BGM	68 min
May 29, 1:02 PM EDT	Mesoscale Discussion	SPC	58 min
May 29, 8:52 PM EDT	Severe Thunderstorm Watch	SPC	5 hr
May 29, 9:47 PM EDT	Mesoscale Discussion	SPC	58 min
May 29, 11:08 PM EDT	Severe Thunderstorm Warning	BGM	37 min
May 29, 11:36 PM EDT	Severe Thunderstorm Warning	BGM	54 min
May 30, 12:28 AM EDT	Mesoscale Discussion	SPC	92 min
Jun 1, 9:38 AM EDT	Mesoscale Discussion	SPC	37 min
Jun 1, 10:02 AM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 2, 2:54 PM EDT	Frost Advisory	BGM	18 hr
Jun 8, 4:15 PM EDT	Severe Thunderstorm Watch	SPC	6 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 9, 11:33 AM EDT	Mesoscale Discussion	SPC	57 min
Jun 9, 12:06 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
Jun 9, 1:00 PM EDT	Severe Thunderstorm Warning	BGM	60 min
Jun 9, 1:18 PM EDT	Severe Thunderstorm Warning	BGM	57 min
Jun 9, 3:18 PM EDT	Mesoscale Discussion	SPC	87 min
Jun 11, 2:25 PM EDT	Severe Thunderstorm Warning	BGM	65 min
Jun 11, 3:20 PM EDT	Severe Thunderstorm Warning	BGM	40 min
Jun 22, 8:38 PM EDT	Special Weather Statement	BGM	37 min
Jun 23, 5:34 AM EDT	Special Weather Statement	BGM	56 min
Jun 23, 6:25 AM EDT	Special Weather Statement	BGM	50 min
Jun 23, 3:27 PM EDT	Mesoscale Discussion	SPC	2 hr
Jun 24, 11:42 AM EDT	Mesoscale Discussion	SPC	3 hr
Jun 28, 1:19 PM EDT	Mesoscale Discussion	SPC	86 min
Jun 28, 4:38 PM EDT	Special Weather Statement	BGM	52 min
Jun 28, 4:43 PM EDT	Severe Thunderstorm Warning	BGM	47 min
Jun 28, 5:10 PM EDT	Severe Thunderstorm Warning	BGM	50 min
Jun 28, 5:28 PM EDT	Severe Thunderstorm Warning	BGM	47 min
Jun 28, 5:55 PM EDT	Severe Thunderstorm Warning	BGM	50 min
Jun 28, 6:41 PM EDT	Areal Flood Advisory	BGM	3 hr
Jul 6, 1:04 PM EDT	Mesoscale Discussion	SPC	56 min
Jul 6, 1:29 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 6, 6:03 PM EDT	Mesoscale Discussion	SPC	87 min
Jul 6, 6:26 PM EDT	Special Weather Statement	BGM	49 min
Jul 6, 6:42 PM EDT	Special Weather Statement	BGM	48 min
Jul 18, 3:58 PM EDT	Mesoscale Discussion	SPC	92 min
Jul 18, 8:00 PM EDT	Severe Thunderstorm Warning	BGM	60 min
Jul 18, 8:59 PM EDT	Severe Thunderstorm Warning	BGM	46 min
Jul 19, 12:37 AM EDT	Special Weather Statement	BGM	53 min
Jul 19, 1:24 AM EDT	Special Weather Statement	BGM	66 min
Jul 20, 2:34 AM EDT	Excessive Heat Watch	BGM	13 hr
Jul 20, 3:48 PM EDT	Excessive Heat Warning	BGM	28 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 25, 12:30 PM EDT	Severe Thunderstorm Warning	BGM	60 min
Jul 25, 1:27 PM EDT	Severe Thunderstorm Warning	BGM	63 min
Jul 25, 3:16 PM EDT	Mesoscale Discussion	SPC	59 min
Jul 26, 11:05 AM EDT	Mesoscale Discussion	SPC	55 min
Jul 26, 11:28 AM EDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 26, 1:10 PM EDT	Severe Thunderstorm Warning	BGM	50 min
Jul 26, 3:39 PM EDT	Mesoscale Discussion	SPC	66 min
Jul 29, 12:57 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 29, 2:40 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
Aug 1, 8:01 AM EDT	Mesoscale Discussion	SPC	89 min
Aug 1, 12:07 PM EDT	Mesoscale Discussion	SPC	53 min
Aug 7, 2:29 PM EDT	Special Weather Statement	BGM	61 min
Aug 7, 3:53 PM EDT	Mesoscale Discussion	SPC	67 min
Aug 9, 2:36 PM EDT	Special Weather Statement	BGM	54 min
Aug 9, 2:48 PM EDT	Severe Thunderstorm Warning	BGM	57 min
Aug 9, 2:58 PM EDT	Tornado Warning	BGM	47 min
Aug 10, 1:40 PM EDT	Special Weather Statement	BGM	65 min
Aug 19, 2:57 PM EDT	Severe Thunderstorm Warning	BGM	63 min
Aug 19, 4:06 PM EDT	Special Weather Statement	BGM	54 min
Aug 24, 11:48 PM EDT	Mesoscale Discussion	SPC	87 min
Aug 25, 2:31 AM EDT	Mesoscale Discussion	SPC	119 min
Aug 25, 3:16 AM EDT	Severe Thunderstorm Warning	BGM	44 min
Aug 26, 3:33 PM EDT	Flood Watch	BGM	53 hr
Aug 27, 3:21 PM EDT	Wind Advisory	BGM	27 hr
Sep 4, 1:33 PM EDT	Mesoscale Discussion	SPC	87 min
Sep 4, 2:43 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
Sep 4, 6:06 PM EDT	Mesoscale Discussion	SPC	54 min
Sep 6, 4:34 AM EDT	Flood Watch	BGM	61 hr
Sep 7, 9:02 AM EDT	Areal Flood Advisory	BGM	6 hr
Sep 7, 4:28 PM EDT	Flash Flood Warning	BGM	12 hr
Sep 7, 6:22 PM EDT	River Flood Warning	BGM	27 hr
Sep 8, 4:48 AM EDT	Flash Flood Warning	BGM	6 hr
Sep 8, 10:49 AM EDT	Flash Flood Warning	BGM	6 hr
Sep 28, 2:43 AM EDT	Flash Flood Watch	BGM	39 hr
Sep 28, 10:31 PM EDT	Areal Flood Advisory	BGM	4 hr
Sep 28, 11:09 PM EDT	Areal Flood Advisory	BGM	4 hr
Sep 29, 12:16 AM EDT	Flash Flood Warning	BGM	4 hr
Sep 29, 2:39 AM EDT	Areal Flood Advisory	BGM	3 hr
Oct 4, 3:48 PM EDT	Freeze Watch	BGM	12 hr
Oct 5, 3:34 AM EDT	Frost Advisory	BGM	30 hr
Oct 6, 3:30 PM EDT	Frost Advisory	BGM	19 hr
Oct 22, 3:21 AM EDT	Frost Advisory	BGM	31 hr
Oct 27, 3:37 AM EDT	Hard Freeze Warning	BGM	30 hr
Nov 14, 6:03 PM EST	Mesoscale Discussion	SPC	117 min
Nov 14, 7:23 PM EST	Special Weather Statement	BGM	52 min
Dec 28, 4:28 AM EST	Wind Advisory	BGM	14 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	31
Tornado Warning	5
Severe Thunderstorm Watch	13
Tornado Watch	2
Mesoscale Discussion	46
Special Weather Statement	14
Flooding
Flash Flood Warning	5
River Flood Warning	3
Flash Flood Watch	4
Flood Watch	6
Areal Flood Advisory	6
Winter
Winter Storm Warning	4
Winter Storm Watch	2
Lake Effect Snow Advisory	4
Winter Weather Advisory	8
Heat
Excessive Heat Warning	1
Excessive Heat Watch	1
Cold
Hard Freeze Warning	1
Freeze Watch	1
Frost Advisory	5
Wind Chill Advisory	1
Wind and dust
High Wind Warning	1
Wind Advisory	8

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.