Alert archive / New York / Cortland County
Weather alerts in Cortland County, New York, 2018
143 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Cortland County and its neighbors
Each county as a circle sized by its count in 2018. Tap one for its archive.
- Alerts
- 143
- Warnings
- 35
- Watches
- 17
- Advisories
- 37
- Busiest month
- July24 alerts
- Busiest day
- July 17, 20188 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Cortland County, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 18 | 12 | 33% | 6 | 67% | 11 min |
| Flash flood warnings | 2 | 2 | 0% | 1 | 100% | 15 min |
Each office's whole area, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Binghamton, NY: tornado warnings | 8 | 4 | 50% | 8 | 50% | 4 min |
| NWS Binghamton, NY: severe thunderstorm warnings | 95 | 47 | 51% | 196 | 67% | 25 min |
| NWS Binghamton, NY: flash flood warnings | 67 | 41 | 39% | 150 | 88% | 93 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 3, 4:01 AM EST | Wind Chill Watch | BGM | 24 hr |
| Jan 3, 3:09 PM EST | Winter Weather Advisory | BGM | 3 days |
| Jan 4, 3:37 AM EST | Wind Chill Warning | BGM | 3 days |
| Jan 10, 2:57 PM EST | Flood Watch | BGM | 4 days |
| Jan 10, 3:10 PM EST | Winter Storm Watch | BGM | 37 hr |
| Jan 12, 3:54 AM EST | Winter Storm Warning | BGM | 32 hr |
| Jan 12, 6:20 AM EST | Areal Flood Advisory | BGM | 4 hr |
| Jan 12, 9:20 AM EST | River Flood Warning | BGM | 54 hr |
| Jan 12, 7:04 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 13, 3:47 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 13, 2:51 PM EST | Wind Chill Advisory | BGM | 19 hr |
| Jan 15, 3:05 PM EST | Winter Weather Advisory | BGM | 42 hr |
| Feb 2, 9:27 AM EST | Snow Squall Warning | BGM | 48 min |
| Feb 2, 9:50 AM EST | Snow Squall Warning | BGM | 55 min |
| Feb 3, 3:26 PM EST | Winter Weather Advisory | BGM | 34 hr |
| Feb 5, 3:10 PM EST | Winter Storm Watch | BGM | 24 hr |
| Feb 6, 3:33 PM EST | Winter Storm Warning | BGM | 28 hr |
| Feb 7, 5:28 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Feb 7, 11:25 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 10, 3:14 PM EST | Winter Weather Advisory | BGM | 19 hr |
| Feb 21, 3:04 PM EST | Winter Weather Advisory | BGM | 26 hr |
| Feb 22, 3:21 PM EST | Winter Weather Advisory | BGM | 28 hr |
| Feb 28, 4:04 AM EST | Winter Storm Watch | BGM | 36 hr |
| Mar 1, 4:15 AM EST | Winter Storm Warning | BGM | 45 hr |
| Mar 2, 3:15 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Mar 6, 7:13 PM EST | Winter Weather Advisory | BGM | 11 hr |
| Mar 12, 3:15 AM EDT | Winter Weather Advisory | BGM | 70 hr |
| Mar 13, 3:57 AM EDT | Winter Weather Advisory | BGM | 49 hr |
| Mar 13, 3:50 PM EDT | Winter Storm Warning | BGM | 37 hr |
| Mar 14, 5:05 PM EDT | Special Weather Statement | BGM | 55 min |
| Mar 14, 6:11 PM EDT | Special Weather Statement | BGM | 109 min |
| Mar 14, 8:13 PM EDT | Special Weather Statement | BGM | 2 hr |
| Mar 14, 10:00 PM EDT | Special Weather Statement | BGM | 2 hr |
| Mar 30, 4:38 PM EDT | River Flood Warning | BGM | 31 hr |
| Apr 3, 4:15 AM EDT | High Wind Watch | BGM | 11 hr |
| Apr 3, 3:13 PM EDT | High Wind Warning | BGM | 31 hr |
| Apr 3, 3:13 PM EDT | Wind Advisory | BGM | 12 hr |
| Apr 5, 8:52 AM EDT | Special Weather Statement | BGM | 53 min |
| Apr 13, 3:37 PM EDT | Winter Weather Advisory | BGM | 62 hr |
| Apr 15, 11:02 AM EDT | Wind Advisory | BGM | 27 hr |
| May 4, 3:50 AM EDT | Wind Advisory | BGM | 19 hr |
| May 4, 2:23 PM EDT | Mesoscale Discussion | SPC | 97 min |
| May 4, 2:44 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 4, 4:20 PM EDT | Mesoscale Discussion | SPC | 55 min |
| May 4, 5:39 PM EDT | Special Weather Statement | BGM | 66 min |
| May 4, 5:49 PM EDT | Severe Thunderstorm Warning | BGM | 41 min |
| May 4, 6:27 PM EDT | Severe Thunderstorm Warning | BGM | 63 min |
| May 15, 8:29 AM EDT | Special Weather Statement | BGM | 61 min |
| May 15, 11:43 AM EDT | Mesoscale Discussion | SPC | 3 hr |
| May 15, 1:03 PM EDT | Tornado Watch | SPC | 4 hr |
| May 28, 2:16 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 28, 2:22 PM EDT | Special Weather Statement | BGM | 38 min |
| May 28, 2:39 PM EDT | Severe Thunderstorm Warning | BGM | 66 min |
| May 28, 3:17 PM EDT | Severe Thunderstorm Warning | BGM | 43 min |
| May 28, 4:03 PM EDT | Special Weather Statement | BGM | 42 min |
| Jun 1, 3:20 PM EDT | Areal Flood Advisory | BGM | 3 hr |
| Jun 1, 4:25 PM EDT | Areal Flood Advisory | BGM | 3 hr |
| Jun 13, 3:30 PM EDT | Mesoscale Discussion | SPC | 60 min |
| Jun 13, 4:06 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 13, 7:12 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Jun 13, 7:24 PM EDT | Special Weather Statement | BGM | 51 min |
| Jun 13, 7:30 PM EDT | Special Weather Statement | BGM | 45 min |
| Jun 13, 7:54 PM EDT | Severe Thunderstorm Warning | BGM | 51 min |
| Jun 13, 8:10 PM EDT | Severe Thunderstorm Warning | BGM | 50 min |
| Jun 17, 2:26 PM EDT | Heat Advisory | BGM | 30 hr |
| Jun 18, 12:19 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jun 18, 4:04 PM EDT | Mesoscale Discussion | SPC | 26 min |
| Jun 18, 4:33 PM EDT | Special Weather Statement | BGM | 57 min |
| Jun 29, 3:49 AM EDT | Heat Advisory | BGM | 5 days |
| Jul 2, 1:03 PM EDT | Mesoscale Discussion | SPC | 72 min |
| Jul 2, 4:46 PM EDT | Special Weather Statement | BGM | 44 min |
| Jul 2, 4:50 PM EDT | Severe Thunderstorm Warning | BGM | 25 min |
| Jul 2, 5:14 PM EDT | Severe Thunderstorm Warning | BGM | 46 min |
| Jul 2, 5:27 PM EDT | Special Weather Statement | BGM | 48 min |
| Jul 2, 6:00 PM EDT | Severe Thunderstorm Warning | BGM | 45 min |
| Jul 2, 6:25 PM EDT | Severe Thunderstorm Warning | BGM | 50 min |
| Jul 3, 3:24 PM EDT | Heat Advisory | BGM | 30 hr |
| Jul 16, 6:35 PM EDT | Severe Thunderstorm Warning | BGM | 40 min |
| Jul 16, 7:15 PM EDT | Severe Thunderstorm Warning | BGM | 60 min |
| Jul 16, 7:39 PM EDT | Special Weather Statement | BGM | 36 min |
| Jul 16, 7:57 PM EDT | Severe Thunderstorm Warning | BGM | 63 min |
| Jul 16, 9:03 PM EDT | Severe Thunderstorm Warning | BGM | 42 min |
| Jul 16, 9:06 PM EDT | Special Weather Statement | BGM | 39 min |
| Jul 16, 9:16 PM EDT | Areal Flood Advisory | BGM | 3 hr |
| Jul 16, 9:30 PM EDT | Flash Flood Warning | BGM | 3 hr |
| Jul 16, 9:49 PM EDT | Special Weather Statement | BGM | 41 min |
| Jul 16, 10:26 PM EDT | Special Weather Statement | BGM | 64 min |
| Jul 16, 11:29 PM EDT | Special Weather Statement | BGM | 46 min |
| Jul 17, 1:48 AM EDT | Areal Flood Advisory | BGM | 104 min |
| Jul 23, 12:07 PM EDT | Flash Flood Watch | BGM | 62 hr |
| Jul 23, 2:40 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 24, 6:10 PM EDT | Special Weather Statement | BGM | 50 min |
| Jul 25, 5:52 PM EDT | Severe Thunderstorm Warning | BGM | 38 min |
| Aug 8, 12:09 PM EDT | Flash Flood Watch | BGM | 12 hr |
| Aug 8, 2:41 PM EDT | Special Weather Statement | BGM | 49 min |
| Aug 8, 6:15 PM EDT | Areal Flood Advisory | BGM | 2 hr |
| Aug 13, 3:15 AM EDT | Flash Flood Watch | BGM | 45 hr |
| Aug 13, 6:41 PM EDT | Areal Flood Advisory | BGM | 4 hr |
| Aug 14, 11:46 AM EDT | Areal Flood Advisory | BGM | 3 hr |
| Aug 17, 3:44 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 27, 3:44 AM EDT | Heat Advisory | BGM | 64 hr |
| Aug 29, 9:34 PM EDT | Severe Thunderstorm Warning | BGM | 56 min |
| Sep 2, 3:25 PM EDT | Heat Advisory | BGM | 27 hr |
| Sep 4, 2:00 PM EDT | Heat Advisory | BGM | 30 hr |
| Sep 8, 4:14 AM EDT | Flood Watch | BGM | 62 hr |
| Sep 12, 1:46 AM EDT | Dense Fog Advisory | BGM | 8 hr |
| Sep 17, 4:10 AM EDT | Flash Flood Watch | BGM | 32 hr |
| Sep 17, 11:48 PM EDT | Areal Flood Advisory | BGM | 4 hr |
| Sep 18, 12:10 AM EDT | Flash Flood Warning | BGM | 6 hr |
| Sep 18, 6:15 AM EDT | Areal Flood Warning | BGM | 6 hr |
| Sep 21, 7:04 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Sep 21, 7:40 PM EDT | Severe Thunderstorm Warning | BGM | 35 min |
| Sep 21, 8:10 PM EDT | Severe Thunderstorm Warning | BGM | 35 min |
| Sep 26, 2:22 PM EDT | Special Weather Statement | BGM | 38 min |
| Sep 26, 2:48 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 26, 3:21 PM EDT | Areal Flood Advisory | BGM | 114 min |
| Oct 11, 2:30 PM EDT | Special Weather Statement | BGM | 60 min |
| Oct 13, 3:32 AM EDT | Frost Advisory | BGM | 29 hr |
| Nov 6, 5:43 PM EST | Special Weather Statement | BGM | 47 min |
| Nov 10, 10:29 AM EST | Special Weather Statement | BGM | 91 min |
| Nov 10, 11:56 AM EST | Special Weather Statement | BGM | 94 min |
| Nov 12, 2:54 PM EST | Winter Weather Advisory | BGM | 20 hr |
| Nov 13, 2:31 PM EST | Winter Weather Advisory | BGM | 23 hr |
| Nov 14, 4:46 AM EST | Winter Storm Watch | BGM | 23 hr |
| Nov 14, 5:38 AM EST | Special Weather Statement | BGM | 52 min |
| Nov 14, 10:16 AM EST | Special Weather Statement | BGM | 89 min |
| Nov 15, 4:02 AM EST | Winter Storm Warning | BGM | 30 hr |
| Nov 15, 4:39 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Nov 15, 10:06 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Nov 16, 3:56 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Nov 21, 11:35 AM EST | Snow Squall Warning | BGM | 55 min |
| Nov 21, 12:07 PM EST | Snow Squall Warning | BGM | 53 min |
| Nov 26, 5:47 PM EST | Winter Weather Advisory | BGM | 49 hr |
| Nov 27, 10:59 AM EST | Winter Storm Warning | BGM | 16 hr |
| Dec 7, 12:15 AM EST | Special Weather Statement | BGM | 60 min |
| Dec 13, 12:36 PM EST | Special Weather Statement | BGM | 39 min |
| Dec 13, 2:01 PM EST | Special Weather Statement | BGM | 44 min |
| Dec 15, 11:52 AM EST | Winter Weather Advisory | BGM | 34 hr |
| Dec 19, 3:18 PM EST | Flood Watch | BGM | 58 hr |
| Dec 21, 8:00 PM EST | Special Weather Statement | BGM | 45 min |
| Dec 24, 3:29 AM EST | Winter Weather Advisory | BGM | 23 hr |
| Dec 24, 4:38 PM EST | Special Weather Statement | BGM | 37 min |
| Dec 24, 5:13 PM EST | Special Weather Statement | BGM | 47 min |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20172019
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.