Alert archive / New York / Tompkins County
Weather alerts in Tompkins County, New York, 2009
97 weather alerts in 2009, 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 2009. Tap one for its archive.
- Alerts
- 97
- Warnings
- 28
- Watches
- 16
- Advisories
- 22
- Busiest month
- August19 alerts
- Busiest day
- August 10, 200911 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 Tompkins County in 2009 had a tornado report inside them.
Tompkins County, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 20 | 11 | 45% | 4 | 100% | 28 min |
| Flash flood warnings | 1 | 0 | 100% | 0 |
Each office's whole area, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Binghamton, NY: tornado warnings | 13 | 2 | 85% | 9 | 67% | 11 min |
| NWS Binghamton, NY: severe thunderstorm warnings | 183 | 79 | 57% | 164 | 85% | 26 min |
| NWS Binghamton, NY: flash flood warnings | 28 | 13 | 54% | 39 | 62% | 79 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, 3:07 AM EST | Winter Weather Advisory | BGM | 41 hr |
| Jan 7, 12:10 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 9, 2:38 AM EST | Winter Storm Watch | BGM | 13 hr |
| Jan 9, 4:07 PM EST | Winter Storm Warning | BGM | 36 hr |
| Jan 9, 4:07 PM EST | Winter Weather Advisory | BGM | 36 hr |
| Jan 10, 7:58 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 15, 3:41 AM EST | Wind Chill Advisory | BGM | 56 hr |
| Jan 26, 3:05 AM EST | Winter Storm Watch | BGM | 33 hr |
| Jan 27, 11:56 AM EST | Winter Storm Warning | BGM | 33 hr |
| Jan 28, 12:31 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Feb 11, 3:08 AM EST | Flood Watch | BGM | 55 hr |
| Feb 11, 3:07 PM EST | Wind Advisory | BGM | 31 hr |
| Feb 12, 4:38 AM EST | River Flood Warning | BGM | 5 hr |
| Feb 18, 12:38 PM EST | Mesoscale Discussion | SPC | 3 hr |
| Mar 2, 2:46 PM EST | Wind Chill Advisory | BGM | 19 hr |
| Mar 7, 3:24 AM EST | Flood Watch | BGM | 4 days |
| Mar 9, 9:36 AM EDT | Areal Flood Advisory | BGM | 4 hr |
| Apr 3, 2:58 PM EDT | Wind Advisory | BGM | 30 hr |
| Apr 25, 1:24 PM EDT | Mesoscale Discussion | SPC | 66 min |
| May 9, 11:52 AM EDT | Mesoscale Discussion | SPC | 83 min |
| May 9, 12:43 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 10, 3:19 AM EDT | Frost Advisory | BGM | 29 hr |
| May 11, 11:39 AM EDT | Frost Advisory | BGM | 21 hr |
| May 12, 11:32 AM EDT | Frost Advisory | BGM | 21 hr |
| May 16, 12:05 PM EDT | Mesoscale Discussion | SPC | 55 min |
| May 16, 1:00 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 16, 2:07 PM EDT | Severe Thunderstorm Warning | BGM | 53 min |
| May 16, 2:59 PM EDT | Severe Thunderstorm Warning | BGM | 61 min |
| May 16, 3:33 PM EDT | Severe Thunderstorm Warning | BGM | 57 min |
| May 16, 3:55 PM EDT | Mesoscale Discussion | SPC | 65 min |
| May 17, 4:00 AM EDT | Freeze Warning | BGM | 27 hr |
| May 18, 2:10 PM EDT | Freeze Warning | BGM | 18 hr |
| May 23, 12:49 PM EDT | Mesoscale Discussion | SPC | 56 min |
| May 23, 4:51 PM EDT | Severe Thunderstorm Warning | BGM | 54 min |
| May 23, 5:12 PM EDT | Severe Thunderstorm Warning | BGM | 48 min |
| May 30, 3:26 PM EDT | Freeze Watch | BGM | 12 hr |
| May 31, 3:18 AM EDT | Frost Advisory | BGM | 29 hr |
| Jun 9, 11:48 AM EDT | Mesoscale Discussion | SPC | 87 min |
| Jun 9, 3:40 PM EDT | Mesoscale Discussion | SPC | 65 min |
| Jun 25, 12:14 PM EDT | Mesoscale Discussion | SPC | 61 min |
| Jun 25, 12:38 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 25, 3:51 PM EDT | Mesoscale Discussion | SPC | 54 min |
| Jun 25, 4:22 PM EDT | Severe Thunderstorm Warning | BGM | 53 min |
| Jun 25, 4:35 PM EDT | Severe Thunderstorm Warning | BGM | 39 min |
| Jun 25, 4:52 PM EDT | Severe Thunderstorm Warning | BGM | 53 min |
| Jun 25, 5:08 PM EDT | Severe Thunderstorm Warning | BGM | 48 min |
| Jun 25, 6:14 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Jun 26, 12:06 PM EDT | Mesoscale Discussion | SPC | 54 min |
| Jun 26, 12:32 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 26, 2:43 PM EDT | Severe Thunderstorm Warning | BGM | 62 min |
| Jun 26, 6:29 PM EDT | Mesoscale Discussion | SPC | 61 min |
| Jul 11, 10:31 AM EDT | Mesoscale Discussion | SPC | 59 min |
| Jul 11, 10:57 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 11, 2:37 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Jul 11, 3:08 PM EDT | Severe Thunderstorm Warning | BGM | 52 min |
| Jul 11, 7:06 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Jul 11, 8:29 PM EDT | Areal Flood Advisory | BGM | 71 min |
| Jul 11, 8:40 PM EDT | Severe Thunderstorm Warning | BGM | 19 min |
| Jul 21, 1:56 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Jul 24, 2:20 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Jul 25, 3:50 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 26, 4:47 PM EDT | Severe Thunderstorm Warning | BGM | 43 min |
| Aug 4, 6:09 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Aug 9, 11:57 AM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 9, 2:45 PM EDT | Mesoscale Discussion | SPC | 60 min |
| Aug 9, 2:59 PM EDT | Severe Thunderstorm Warning | BGM | 61 min |
| Aug 9, 7:11 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 9, 8:47 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Aug 9, 10:47 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Aug 10, 7:50 AM EDT | Flash Flood Watch | BGM | 14 hr |
| Aug 10, 2:26 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 10, 3:13 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 10, 3:46 PM EDT | Severe Thunderstorm Warning | BGM | 44 min |
| Aug 10, 4:13 PM EDT | Severe Thunderstorm Warning | BGM | 62 min |
| Aug 10, 4:24 PM EDT | Tornado Warning | BGM | 30 min |
| Aug 10, 4:38 PM EDT | Severe Thunderstorm Warning | BGM | 52 min |
| Aug 10, 4:56 PM EDT | Severe Thunderstorm Warning | BGM | 49 min |
| Aug 10, 5:18 PM EDT | Flash Flood Warning | BGM | 3 hr |
| Aug 10, 8:15 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 10, 8:48 PM EDT | Severe Thunderstorm Warning | BGM | 42 min |
| Aug 18, 2:32 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Sep 19, 3:59 AM EDT | Frost Advisory | BGM | 29 hr |
| Sep 23, 1:18 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Sep 28, 2:28 PM EDT | Severe Thunderstorm Warning | BGM | 47 min |
| Oct 7, 2:28 AM EDT | Wind Advisory | BGM | 18 hr |
| Oct 10, 3:15 AM EDT | Frost Advisory | BGM | 29 hr |
| Oct 10, 3:18 PM EDT | Freeze Watch | BGM | 23 hr |
| Oct 11, 2:09 PM EDT | Freeze Warning | BGM | 18 hr |
| Nov 27, 3:39 AM EST | Wind Advisory | BGM | 33 hr |
| Dec 8, 4:17 AM EST | Winter Weather Advisory | BGM | 30 hr |
| Dec 8, 11:32 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Dec 9, 10:35 AM EST | Wind Advisory | BGM | 41 hr |
| Dec 13, 5:16 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Dec 13, 9:21 AM EST | Freezing Rain Advisory | BGM | 6 hr |
| Dec 17, 12:20 AM EST | Lake Effect Snow Advisory | BGM | 7 hr |
| Dec 24, 4:07 PM EST | Winter Weather Advisory | BGM | 41 hr |
| Dec 28, 8:12 AM EST | Winter Weather Advisory | BGM | 4 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 archive20082010
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.