Alert archive / New York / Sullivan County
Weather alerts in Sullivan County, New York, 2020
134 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Sullivan County and its neighbors
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Alerts
- 134
- Warnings
- 43
- Watches
- 14
- Advisories
- 29
- Busiest month
- July33 alerts
- Busiest day
- July 6, 202010 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 Sullivan County in 2020 had a tornado report inside them.
Sullivan County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 27 | 19 | 30% | 24 | 79% | 23 min |
| Flash flood warnings | 2 | 2 | 0% | 1 | 100% | 64 min |
Each office's whole area, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Binghamton, NY: tornado warnings | 6 | 0 | 100% | 0 | ||
| NWS Binghamton, NY: severe thunderstorm warnings | 136 | 92 | 32% | 361 | 76% | 22 min |
| NWS Binghamton, NY: flash flood warnings | 31 | 17 | 45% | 39 | 82% | 94 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 |
|---|---|---|---|
| Dec 31, 7:00 PM EST | Snow Squall Warning | BGM | 49 min |
| Jan 11, 1:36 PM EST | Wind Advisory | BGM | 23 hr |
| Jan 12, 5:27 AM EST | Special Weather Statement | BGM | 48 min |
| Jan 15, 2:36 PM EST | Wind Advisory | BGM | 28 hr |
| Jan 17, 3:10 PM EST | Winter Weather Advisory | BGM | 38 hr |
| Jan 24, 3:11 PM EST | Winter Weather Advisory | BGM | 23 hr |
| Feb 5, 3:52 AM EST | Winter Weather Advisory | BGM | 38 hr |
| Feb 7, 4:01 AM EST | Wind Advisory | BGM | 15 hr |
| Feb 9, 2:59 PM EST | Winter Weather Advisory | BGM | 19 hr |
| Feb 11, 8:37 AM EST | Dense Fog Advisory | BGM | 4 hr |
| Feb 11, 2:47 PM EST | Winter Weather Advisory | BGM | 45 hr |
| Feb 26, 3:25 PM EST | Wind Advisory | BGM | 34 hr |
| Feb 29, 9:45 AM EST | Special Weather Statement | BGM | 75 min |
| Mar 3, 9:41 PM EST | Special Weather Statement | BGM | 34 min |
| Mar 20, 5:14 PM EDT | Special Weather Statement | BGM | 31 min |
| Mar 22, 4:14 AM EDT | Winter Storm Watch | BGM | 10 hr |
| Mar 22, 1:44 PM EDT | Winter Storm Warning | BGM | 32 hr |
| Apr 9, 3:55 AM EDT | Wind Advisory | BGM | 11 hr |
| Apr 9, 11:24 AM EDT | Special Weather Statement | BGM | 51 min |
| Apr 12, 2:04 PM EDT | Wind Advisory | BGM | 32 hr |
| Apr 13, 2:42 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Apr 13, 4:56 PM EDT | Special Weather Statement | BGM | 34 min |
| Apr 13, 8:14 PM EDT | River Flood Warning | BGM | 6 hr |
| Apr 17, 3:34 AM EDT | Winter Weather Advisory | BGM | 30 hr |
| Apr 17, 6:55 PM EDT | Mesoscale Discussion | SPC | 4 hr |
| Apr 29, 3:07 AM EDT | Flood Watch | BGM | 49 hr |
| May 7, 8:44 PM EDT | Special Weather Statement | BGM | 61 min |
| May 10, 2:29 PM EDT | Freeze Watch | BGM | 12 hr |
| May 11, 2:48 AM EDT | Freeze Warning | BGM | 30 hr |
| May 12, 10:08 AM EDT | Freeze Warning | BGM | 23 hr |
| May 13, 10:23 AM EDT | Freeze Warning | BGM | 22 hr |
| May 15, 2:59 PM EDT | Mesoscale Discussion | SPC | 91 min |
| May 15, 5:52 PM EDT | Severe Thunderstorm Warning | BGM | 33 min |
| May 29, 12:27 PM EDT | Mesoscale Discussion | SPC | 63 min |
| May 29, 2:25 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 29, 3:03 PM EDT | Mesoscale Discussion | SPC | 87 min |
| May 29, 6:01 PM EDT | Areal Flood Advisory | BGM | 99 min |
| May 29, 8:01 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Jun 3, 6:53 PM EDT | Severe Thunderstorm Warning | BGM | 67 min |
| Jun 3, 6:58 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Jun 6, 12:53 PM EDT | Special Weather Statement | BGM | 52 min |
| Jun 10, 1:39 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 11, 6:55 AM EDT | Areal Flood Advisory | BGM | 113 min |
| Jun 11, 8:22 AM EDT | Special Weather Statement | BGM | 53 min |
| Jun 28, 12:37 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Jun 28, 1:32 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 28, 2:03 PM EDT | Severe Thunderstorm Warning | BGM | 57 min |
| Jun 28, 3:01 PM EDT | Severe Thunderstorm Warning | BGM | 59 min |
| Jun 28, 3:05 PM EDT | Severe Thunderstorm Warning | BGM | 55 min |
| Jun 28, 4:08 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 3, 5:37 PM EDT | Special Weather Statement | BGM | 53 min |
| Jul 6, 4:56 PM EDT | Special Weather Statement | BGM | 49 min |
| Jul 6, 5:03 PM EDT | Severe Thunderstorm Warning | BGM | 42 min |
| Jul 6, 5:10 PM EDT | Special Weather Statement | BGM | 65 min |
| Jul 6, 5:19 PM EDT | Severe Thunderstorm Warning | BGM | 41 min |
| Jul 6, 5:43 PM EDT | Areal Flood Advisory | BGM | 3 hr |
| Jul 6, 5:47 PM EDT | Severe Thunderstorm Warning | BGM | 43 min |
| Jul 6, 6:05 PM EDT | Severe Thunderstorm Warning | BGM | 55 min |
| Jul 6, 6:35 PM EDT | Special Weather Statement | BGM | 55 min |
| Jul 6, 6:43 PM EDT | Severe Thunderstorm Warning | BGM | 62 min |
| Jul 6, 6:54 PM EDT | Special Weather Statement | BGM | 51 min |
| Jul 8, 11:29 AM EDT | Areal Flood Advisory | BGM | 3 hr |
| Jul 8, 2:07 PM EDT | Areal Flood Advisory | BGM | 96 min |
| Jul 10, 3:25 AM EDT | Flash Flood Watch | BGM | 22 hr |
| Jul 10, 5:29 PM EDT | Areal Flood Advisory | BGM | 6 hr |
| Jul 11, 2:06 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Jul 12, 9:48 PM EDT | Special Weather Statement | BGM | 57 min |
| Jul 19, 5:52 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Jul 19, 6:29 PM EDT | Severe Thunderstorm Warning | BGM | 46 min |
| Jul 19, 6:46 PM EDT | Severe Thunderstorm Warning | BGM | 44 min |
| Jul 19, 7:14 PM EDT | Severe Thunderstorm Warning | BGM | 46 min |
| Jul 19, 7:14 PM EDT | Severe Thunderstorm Warning | BGM | 34 min |
| Jul 22, 1:45 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 22, 2:57 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 22, 4:26 PM EDT | Severe Thunderstorm Warning | BGM | 45 min |
| Jul 22, 4:39 PM EDT | Severe Thunderstorm Warning | BGM | 33 min |
| Jul 22, 5:19 PM EDT | Special Weather Statement | BGM | 11 min |
| Jul 23, 12:05 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Jul 23, 2:49 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 23, 4:28 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 23, 6:48 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Jul 30, 1:20 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Jul 30, 7:11 PM EDT | Special Weather Statement | BGM | 64 min |
| Aug 2, 2:00 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 2, 3:10 PM EDT | Tornado Watch | SPC | 7 hr |
| Aug 2, 6:45 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 3, 4:05 AM EDT | Flash Flood Watch | BGM | 41 hr |
| Aug 3, 3:14 PM EDT | Wind Advisory | BGM | 27 hr |
| Aug 4, 8:40 AM EDT | Special Weather Statement | BGM | 35 min |
| Aug 4, 9:09 AM EDT | Tornado Warning | BGM | 36 min |
| Aug 4, 12:03 PM EDT | Areal Flood Advisory | BGM | 6 hr |
| Aug 4, 2:16 PM EDT | Flash Flood Warning | BGM | 4 hr |
| Aug 4, 5:32 PM EDT | River Flood Warning | BGM | 5 hr |
| Aug 11, 10:28 PM EDT | Areal Flood Advisory | BGM | 3 hr |
| Aug 17, 11:37 PM EDT | Severe Thunderstorm Warning | BGM | 23 min |
| Aug 17, 11:57 PM EDT | Severe Thunderstorm Warning | BGM | 33 min |
| Aug 25, 1:21 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 25, 3:10 PM EDT | Special Weather Statement | BGM | 65 min |
| Aug 27, 12:38 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 27, 1:22 PM EDT | Tornado Watch | SPC | 7 hr |
| Aug 27, 3:10 PM EDT | Severe Thunderstorm Warning | BGM | 65 min |
| Aug 27, 3:46 PM EDT | Severe Thunderstorm Warning | BGM | 59 min |
| Aug 27, 4:21 PM EDT | Severe Thunderstorm Warning | BGM | 24 min |
| Aug 27, 4:56 PM EDT | Severe Thunderstorm Warning | BGM | 64 min |
| Aug 27, 5:23 PM EDT | Severe Thunderstorm Warning | BGM | 37 min |
| Aug 27, 5:50 PM EDT | Severe Thunderstorm Warning | BGM | 55 min |
| Aug 29, 1:36 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Aug 29, 6:29 PM EDT | Severe Thunderstorm Warning | BGM | 46 min |
| Aug 29, 6:45 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 29, 7:46 PM EDT | Severe Thunderstorm Warning | BGM | 39 min |
| Sep 18, 3:12 AM EDT | Frost Advisory | BGM | 29 hr |
| Sep 19, 3:04 PM EDT | Frost Advisory | BGM | 18 hr |
| Sep 20, 2:41 PM EDT | Freeze Warning | BGM | 18 hr |
| Oct 6, 2:45 PM EDT | Wind Advisory | BGM | 29 hr |
| Nov 1, 3:08 PM EST | Wind Advisory | BGM | 28 hr |
| Nov 1, 5:06 PM EST | Special Weather Statement | BGM | 54 min |
| Nov 15, 3:33 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Nov 15, 6:29 PM EST | Special Weather Statement | BGM | 76 min |
| Nov 15, 7:11 PM EST | Severe Thunderstorm Warning | BGM | 41 min |
| Nov 30, 4:27 PM EST | Areal Flood Advisory | BGM | 2 hr |
| Nov 30, 4:51 PM EST | Special Weather Statement | BGM | 54 min |
| Dec 14, 3:42 AM EST | Winter Storm Watch | BGM | 48 hr |
| Dec 15, 3:53 AM EST | Winter Storm Warning | BGM | 54 hr |
| Dec 16, 6:48 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Dec 16, 10:12 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Dec 22, 2:59 PM EST | Flood Watch | BGM | 69 hr |
| Dec 24, 3:57 AM EST | Wind Advisory | BGM | 27 hr |
| Dec 24, 11:30 AM EST | River Flood Warning | BGM | 37 hr |
| Dec 25, 12:54 AM EST | Flash Flood Warning | BGM | 6 hr |
| Dec 25, 6:01 AM EST | Areal Flood Warning | BGM | 6 hr |
| Dec 25, 10:20 AM EST | River Flood Warning | BGM | 17 hr |
| Dec 25, 10:21 AM EST | River Flood Warning | BGM | 22 hr |
| Dec 28, 7:22 AM EST | Special Weather Statement | BGM | 53 min |
| Dec 30, 3:20 AM EST | Winter Weather Advisory | BGM | 27 hr |
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 archive20192021
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.