Alert archive / New York / Greene County
Weather alerts in Greene County, New York, 2009
118 weather alerts in 2009, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Greene County and its neighbors
Each county as a circle sized by its count in 2009. Tap one for its archive.
- Alerts
- 118
- Warnings
- 28
- Watches
- 22
- Advisories
- 35
- Busiest month
- July40 alerts
- Busiest day
- July 29, 200910 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Greene County, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 18 | 5 | 72% | 3 | 33% | 2 min |
| Flash flood warnings | 2 | 2 | 0% | 3 | 100% | 83 min |
Each office's whole area, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Albany, NY: tornado warnings | 1 | 0 | 100% | 0 | ||
| NWS Albany, NY: severe thunderstorm warnings | 149 | 75 | 50% | 182 | 91% | 25 min |
| NWS Albany, NY: flash flood warnings | 35 | 21 | 40% | 56 | 71% | 63 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 5, 3:16 PM EST | Winter Storm Watch | ALY | 22 hr |
| Jan 6, 4:49 AM EST | Winter Storm Warning | ALY | 50 hr |
| Jan 7, 12:10 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 7, 6:08 AM EST | Mesoscale Discussion | SPC | 3 hr |
| Jan 7, 3:55 PM EST | Winter Weather Advisory | ALY | 13 hr |
| Jan 9, 4:05 AM EST | Winter Storm Watch | ALY | 23 hr |
| Jan 10, 3:05 AM EST | Winter Storm Warning | ALY | 31 hr |
| Jan 10, 7:58 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 16, 3:51 AM EST | Wind Chill Advisory | ALY | 8 hr |
| Jan 16, 3:46 PM EST | Wind Chill Advisory | ALY | 17 hr |
| Jan 26, 11:37 AM EST | Winter Storm Watch | ALY | 28 hr |
| Jan 27, 11:10 AM EST | Winter Storm Warning | ALY | 41 hr |
| Jan 28, 7:53 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Jan 28, 12:24 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 11, 2:42 AM EST | Flood Watch | ALY | 55 hr |
| Feb 11, 3:22 PM EST | Wind Advisory | ALY | 30 hr |
| Feb 18, 3:46 AM EST | Winter Weather Advisory | ALY | 31 hr |
| Feb 18, 6:28 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 27, 4:27 AM EST | Flood Watch | ALY | 21 hr |
| Mar 1, 3:56 AM EST | Winter Storm Watch | ALY | 12 hr |
| Mar 1, 4:00 PM EST | Winter Weather Advisory | ALY | 28 hr |
| Mar 10, 4:02 AM EDT | Flood Watch | ALY | 32 hr |
| Apr 3, 3:40 PM EDT | Wind Advisory | ALY | 26 hr |
| Apr 29, 3:42 AM EDT | Frost Advisory | ALY | 28 hr |
| May 9, 12:43 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 9, 2:56 PM EDT | Mesoscale Discussion | SPC | 94 min |
| May 14, 8:52 AM EDT | Wind Advisory | ALY | 9 hr |
| May 16, 6:29 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 17, 4:11 AM EDT | Freeze Warning | ALY | 24 hr |
| May 18, 4:21 AM EDT | Frost Advisory | ALY | 14 hr |
| May 18, 4:21 AM EDT | Freeze Warning | ALY | 28 hr |
| May 24, 11:49 AM EDT | Mesoscale Discussion | SPC | 116 min |
| May 31, 3:17 AM EDT | Frost Advisory | ALY | 28 hr |
| Jun 15, 12:18 PM EDT | Severe Thunderstorm Warning | ALY | 57 min |
| Jun 15, 1:00 PM EDT | Severe Thunderstorm Warning | ALY | 60 min |
| Jun 15, 1:35 PM EDT | Severe Thunderstorm Warning | ALY | 32 min |
| Jun 15, 6:56 PM EDT | Severe Thunderstorm Warning | ALY | 64 min |
| Jun 20, 4:34 PM EDT | Areal Flood Advisory | ALY | 7 hr |
| Jun 25, 5:30 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 25, 8:21 PM EDT | Mesoscale Discussion | SPC | 54 min |
| Jun 25, 8:44 PM EDT | Severe Thunderstorm Warning | ALY | 61 min |
| Jun 26, 12:32 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 30, 10:57 AM EDT | Mesoscale Discussion | SPC | 93 min |
| Jun 30, 11:37 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 30, 2:18 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Jun 30, 2:32 PM EDT | Severe Thunderstorm Warning | ALY | 58 min |
| Jun 30, 3:05 PM EDT | Severe Thunderstorm Warning | ALY | 55 min |
| Jun 30, 3:16 PM EDT | Flash Flood Watch | ALY | 55 hr |
| Jun 30, 3:21 PM EDT | Severe Thunderstorm Warning | ALY | 54 min |
| Jun 30, 4:25 PM EDT | Mesoscale Discussion | SPC | 65 min |
| Jul 1, 12:03 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jul 1, 2:55 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 1, 3:57 PM EDT | Areal Flood Advisory | ALY | 4 hr |
| Jul 1, 5:44 PM EDT | Mesoscale Discussion | SPC | 61 min |
| Jul 2, 3:20 PM EDT | Mesoscale Discussion | SPC | 55 min |
| Jul 3, 4:00 AM EDT | Flash Flood Watch | ALY | 9 hr |
| Jul 7, 11:05 AM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 7, 11:35 AM EDT | Severe Thunderstorm Warning | ALY | 55 min |
| Jul 7, 2:00 PM EDT | Mesoscale Discussion | SPC | 90 min |
| Jul 7, 4:41 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 7, 4:43 PM EDT | Severe Thunderstorm Warning | ALY | 50 min |
| Jul 11, 2:37 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Jul 16, 12:04 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Jul 16, 1:39 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 16, 4:55 PM EDT | Mesoscale Discussion | SPC | 65 min |
| Jul 16, 6:15 PM EDT | Severe Thunderstorm Warning | ALY | 60 min |
| Jul 16, 6:16 PM EDT | Mesoscale Discussion | SPC | 59 min |
| Jul 16, 6:27 PM EDT | Areal Flood Advisory | ALY | 101 min |
| Jul 16, 6:47 PM EDT | Severe Thunderstorm Warning | ALY | 28 min |
| Jul 17, 4:49 AM EDT | Dense Fog Advisory | ALY | 3 hr |
| Jul 24, 8:40 PM EDT | Areal Flood Advisory | ALY | 2 hr |
| Jul 26, 3:51 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 29, 3:45 AM EDT | Flash Flood Watch | ALY | 26 hr |
| Jul 29, 12:22 PM EDT | Mesoscale Discussion | SPC | 23 min |
| Jul 29, 12:49 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 29, 2:02 PM EDT | Severe Thunderstorm Warning | ALY | 58 min |
| Jul 29, 2:19 PM EDT | Areal Flood Advisory | ALY | 3 hr |
| Jul 29, 2:22 PM EDT | Mesoscale Discussion | SPC | 23 min |
| Jul 29, 2:43 PM EDT | Flash Flood Warning | ALY | 6 hr |
| Jul 29, 4:22 PM EDT | Severe Thunderstorm Warning | ALY | 53 min |
| Jul 29, 4:58 PM EDT | Severe Thunderstorm Warning | ALY | 62 min |
| Jul 29, 5:05 PM EDT | Mesoscale Discussion | SPC | 55 min |
| Jul 29, 10:11 PM EDT | Areal Flood Warning | ALY | 15 hr |
| Jul 30, 1:12 AM EDT | Areal Flood Advisory | ALY | 3 hr |
| Jul 30, 3:37 PM EDT | Flash Flood Watch | ALY | 28 hr |
| Jul 31, 10:20 AM EDT | Mesoscale Discussion | SPC | 85 min |
| Jul 31, 11:09 AM EDT | Areal Flood Advisory | ALY | 3 hr |
| Jul 31, 11:59 AM EDT | Areal Flood Advisory | ALY | 3 hr |
| Jul 31, 12:14 PM EDT | Flash Flood Warning | ALY | 4 hr |
| Jul 31, 4:26 PM EDT | Areal Flood Advisory | ALY | 3 hr |
| Aug 10, 4:40 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 10, 5:09 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 10, 8:15 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 19, 1:21 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Aug 21, 10:01 AM EDT | Mesoscale Discussion | SPC | 119 min |
| Aug 21, 10:47 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 21, 1:36 PM EDT | Severe Thunderstorm Warning | ALY | 54 min |
| Aug 21, 2:57 PM EDT | Severe Thunderstorm Warning | ALY | 63 min |
| Sep 8, 6:06 AM EDT | Dense Fog Advisory | ALY | 3 hr |
| Sep 19, 3:18 AM EDT | Frost Advisory | ALY | 29 hr |
| Oct 7, 4:21 AM EDT | Wind Advisory | ALY | 16 hr |
| Oct 11, 3:07 AM EDT | Freeze Warning | ALY | 30 hr |
| Oct 15, 2:46 PM EDT | Winter Weather Advisory | ALY | 18 hr |
| Oct 31, 12:15 PM EDT | Wind Advisory | ALY | 6 hr |
| Nov 27, 4:10 AM EST | High Wind Warning | ALY | 33 hr |
| Nov 27, 4:10 AM EST | Wind Advisory | ALY | 33 hr |
| Dec 3, 6:22 AM EST | Areal Flood Advisory | ALY | 3 hr |
| Dec 5, 3:44 AM EST | Winter Weather Advisory | ALY | 19 hr |
| Dec 8, 4:25 AM EST | Winter Weather Advisory | ALY | 31 hr |
| Dec 8, 4:54 PM EST | Winter Storm Warning | ALY | 22 hr |
| Dec 8, 11:32 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Dec 13, 10:00 AM EST | Freezing Rain Advisory | ALY | 10 hr |
| Dec 25, 4:47 AM EST | Freezing Rain Advisory | ALY | 49 hr |
| Dec 25, 5:03 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Dec 26, 12:37 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Dec 27, 7:02 AM EST | Areal Flood Advisory | ALY | 4 hr |
| Dec 28, 4:18 PM EST | Wind Chill Advisory | ALY | 41 hr |
| Dec 29, 6:06 AM EST | Wind Advisory | ALY | 13 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 | 17 |
| Severe Thunderstorm Watch | 11 |
| Mesoscale Discussion | 33 |
| Flooding | |
| Areal Flood Warning | 1 |
| Flash Flood Warning | 2 |
| Flash Flood Watch | 4 |
| Flood Watch | 3 |
| Areal Flood Advisory | 11 |
| Winter | |
| Winter Storm Warning | 4 |
| Winter Storm Watch | 4 |
| Freezing Rain Advisory | 2 |
| Winter Weather Advisory | 6 |
| Cold | |
| Freeze Warning | 3 |
| Frost Advisory | 4 |
| Wind Chill Advisory | 3 |
| Wind and dust | |
| High Wind Warning | 1 |
| Wind Advisory | 7 |
| Fog and smoke | |
| Dense Fog Advisory | 2 |
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.