Alert archive / New York / Ontario County
Weather alerts in Ontario County, New York, 2016
86 weather alerts in 2016, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Ontario County and its neighbors
Each county as a circle sized by its count in 2016. Tap one for its archive.
- Alerts
- 86
- Warnings
- 19
- Watches
- 6
- Advisories
- 24
- Busiest month
- August13 alerts
- Busiest day
- May 29, 20167 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Ontario County, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 12 | 5 | 58% | 8 | 38% | 26 min |
| Flash flood warnings | 2 | 2 | 0% | 0 |
Each office's whole area, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Buffalo, NY: tornado warnings | 4 | 0 | 100% | 0 | ||
| NWS Buffalo, NY: severe thunderstorm warnings | 87 | 56 | 36% | 162 | 83% | 27 min |
| NWS Buffalo, NY: flash flood warnings | 9 | 4 | 56% | 11 | 64% | 55 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 2, 3:31 PM EST | Lake Effect Snow Advisory | BUF | 45 hr |
| Jan 8, 2:39 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Jan 9, 12:40 PM EST | High Wind Warning | BUF | 39 hr |
| Jan 9, 12:40 PM EST | Wind Advisory | BUF | 35 hr |
| Jan 12, 1:50 PM EST | Special Weather Statement | BUF | 85 min |
| Jan 14, 1:41 PM EST | Winter Weather Advisory | BUF | 8 hr |
| Feb 1, 3:31 PM EST | Wind Advisory | BUF | 45 hr |
| Feb 11, 10:00 AM EST | Wind Chill Watch | BUF | 18 hr |
| Feb 12, 3:46 AM EST | Wind Chill Warning | BUF | 57 hr |
| Feb 14, 3:25 PM EST | Winter Storm Watch | BUF | 21 hr |
| Feb 15, 3:34 AM EST | Winter Storm Warning | BUF | 41 hr |
| Feb 15, 12:48 PM EST | Flood Watch | BUF | 27 hr |
| Feb 18, 3:37 PM EST | Freezing Rain Advisory | BUF | 21 hr |
| Feb 23, 3:49 AM EST | Winter Weather Advisory | BUF | 39 hr |
| Feb 24, 12:24 PM EST | Special Weather Statement | BUF | 3 hr |
| Mar 1, 3:41 AM EST | Winter Weather Advisory | BUF | 33 hr |
| Mar 16, 2:34 PM EDT | Wind Advisory | BUF | 27 hr |
| Mar 16, 9:59 PM EDT | Special Weather Statement | BUF | 31 min |
| Mar 22, 2:36 PM EDT | Winter Weather Advisory | BUF | 49 hr |
| Mar 27, 8:47 PM EDT | Wind Advisory | BUF | 29 hr |
| Apr 1, 2:39 PM EDT | Winter Weather Advisory | BUF | 38 hr |
| Apr 3, 4:55 AM EDT | Winter Weather Advisory | BUF | 33 hr |
| Apr 3, 2:59 PM EDT | Winter Storm Warning | BUF | 11 hr |
| Apr 5, 2:52 PM EDT | Wind Advisory | BUF | 40 hr |
| May 9, 5:36 PM EDT | Frost Advisory | BUF | 14 hr |
| May 28, 2:02 PM EDT | Special Weather Statement | BUF | 43 min |
| May 28, 6:43 PM EDT | Special Weather Statement | BUF | 32 min |
| May 29, 1:15 PM EDT | Special Weather Statement | BUF | 45 min |
| May 29, 2:03 PM EDT | Special Weather Statement | BUF | 42 min |
| May 29, 2:49 PM EDT | Special Weather Statement | BUF | 26 min |
| May 29, 3:19 PM EDT | Special Weather Statement | BUF | 56 min |
| May 29, 4:40 PM EDT | Severe Thunderstorm Warning | BUF | 35 min |
| May 29, 5:16 PM EDT | Special Weather Statement | BUF | 44 min |
| May 29, 6:41 PM EDT | Flash Flood Warning | BUF | 3 hr |
| Jun 2, 7:32 PM EDT | Flash Flood Warning | BUF | 3 hr |
| Jun 20, 8:06 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 20, 11:04 PM EDT | Mesoscale Discussion | SPC | 56 min |
| Jun 20, 11:43 PM EDT | Severe Thunderstorm Warning | BUF | 23 min |
| Jul 7, 5:47 PM EDT | Special Weather Statement | BUF | 28 min |
| Jul 15, 11:57 AM EDT | Special Weather Statement | BUF | 48 min |
| Jul 15, 12:07 PM EDT | Severe Thunderstorm Warning | BUF | 23 min |
| Jul 15, 12:31 PM EDT | Severe Thunderstorm Warning | BUF | 21 min |
| Jul 18, 11:12 AM EDT | Special Weather Statement | BUF | 33 min |
| Jul 25, 8:40 AM EDT | Severe Thunderstorm Warning | BUF | 35 min |
| Jul 25, 10:51 AM EDT | Mesoscale Discussion | SPC | 114 min |
| Jul 25, 1:24 PM EDT | Special Weather Statement | BUF | 36 min |
| Jul 31, 3:15 PM EDT | Special Weather Statement | BUF | 60 min |
| Jul 31, 4:15 PM EDT | Special Weather Statement | BUF | 45 min |
| Aug 12, 10:36 AM EDT | Heat Advisory | BUF | 7 hr |
| Aug 13, 3:11 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 13, 3:51 PM EDT | Severe Thunderstorm Warning | BUF | 54 min |
| Aug 13, 4:03 PM EDT | Severe Thunderstorm Warning | BUF | 42 min |
| Aug 13, 4:41 PM EDT | Severe Thunderstorm Warning | BUF | 26 min |
| Aug 13, 4:51 PM EDT | Severe Thunderstorm Warning | BUF | 39 min |
| Aug 13, 6:17 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 13, 6:25 PM EDT | Severe Thunderstorm Warning | BUF | 50 min |
| Aug 16, 3:57 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Aug 20, 2:00 PM EDT | Special Weather Statement | BUF | 45 min |
| Aug 20, 2:03 PM EDT | Special Weather Statement | BUF | 42 min |
| Aug 20, 4:08 PM EDT | Special Weather Statement | BUF | 37 min |
| Aug 20, 4:52 PM EDT | Special Weather Statement | BUF | 38 min |
| Sep 8, 1:21 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 10, 8:06 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Sep 17, 6:37 PM EDT | Severe Thunderstorm Warning | BUF | 53 min |
| Sep 17, 6:55 PM EDT | Mesoscale Discussion | SPC | 65 min |
| Sep 17, 7:30 PM EDT | Severe Thunderstorm Warning | BUF | 60 min |
| Sep 17, 9:39 PM EDT | Special Weather Statement | BUF | 66 min |
| Oct 10, 3:55 AM EDT | Frost Advisory | BUF | 29 hr |
| Oct 13, 7:34 PM EDT | Frost Advisory | BUF | 12 hr |
| Oct 20, 4:05 PM EDT | Flash Flood Watch | BUF | 23 hr |
| Nov 18, 2:31 PM EST | Lake Effect Snow Warning | BUF | 4 days |
| Nov 19, 3:59 AM EST | Lake Effect Snow Advisory | BUF | 53 hr |
| Nov 20, 11:07 PM EST | Special Weather Statement | BUF | 113 min |
| Nov 21, 1:36 AM EST | Special Weather Statement | BUF | 114 min |
| Nov 21, 4:34 AM EST | Special Weather Statement | BUF | 116 min |
| Nov 21, 1:45 PM EST | Special Weather Statement | BUF | 3 hr |
| Nov 23, 9:35 AM EST | Winter Weather Advisory | BUF | 24 hr |
| Nov 30, 10:30 PM EST | Special Weather Statement | BUF | 75 min |
| Dec 10, 2:49 PM EST | Winter Weather Advisory | BUF | 43 hr |
| Dec 14, 3:27 PM EST | Winter Weather Advisory | BUF | 36 hr |
| Dec 15, 3:51 PM EST | Special Weather Statement | BUF | 3 hr |
| Dec 15, 6:00 PM EST | Special Weather Statement | BUF | 105 min |
| Dec 15, 8:05 PM EST | Special Weather Statement | BUF | 85 min |
| Dec 16, 3:22 AM EST | Winter Weather Advisory | BUF | 57 hr |
| Dec 25, 12:51 PM EST | Freezing Rain Advisory | BUF | 30 hr |
| Dec 27, 11:50 PM EST | Winter Weather Advisory | BUF | 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 archive20152017
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.