Alert archive / New York / Lewis County
Weather alerts in Lewis County, New York, 2018
144 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Lewis County and its neighbors
Each county as a circle sized by its count in 2018. Tap one for its archive.
- Alerts
- 144
- Warnings
- 36
- Watches
- 16
- Advisories
- 37
- Busiest month
- February26 alerts
- Busiest day
- May 4, 201811 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Lewis County, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 14 | 9 | 36% | 9 | 89% | 25 min |
| Flash flood warnings | 1 | 0 | 100% | 0 |
Each office's whole area, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Buffalo, NY: tornado warnings | 4 | 0 | 100% | 1 | 0% | |
| NWS Buffalo, NY: severe thunderstorm warnings | 71 | 45 | 37% | 135 | 80% | 23 min |
| NWS Buffalo, NY: flash flood warnings | 17 | 9 | 47% | 39 | 87% | 58 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 1, 2:44 PM EST | Wind Chill Advisory | BUF | 19 hr |
| Jan 1, 2:44 PM EST | Winter Weather Advisory | BUF | 34 hr |
| Jan 2, 2:51 PM EST | Special Weather Statement | BUF | 84 min |
| Jan 2, 4:08 PM EST | Lake Effect Snow Warning | BUF | 9 hr |
| Jan 3, 3:42 AM EST | Wind Chill Watch | BUF | 24 hr |
| Jan 4, 3:38 AM EST | Wind Chill Warning | BUF | 3 days |
| Jan 7, 3:30 AM EST | Winter Weather Advisory | BUF | 51 hr |
| Jan 9, 8:34 PM EST | Flood Watch | BUF | 67 hr |
| Jan 10, 12:09 PM EST | Winter Weather Advisory | BUF | 12 hr |
| Jan 10, 3:03 PM EST | Winter Storm Watch | BUF | 23 hr |
| Jan 11, 2:31 PM EST | Winter Storm Warning | BUF | 45 hr |
| Jan 12, 8:11 AM EST | Areal Flood Warning | BUF | 12 hr |
| Jan 12, 7:04 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 13, 12:22 AM EST | River Flood Warning | BUF | 23 hr |
| Jan 13, 3:47 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 13, 11:57 AM EST | River Flood Warning | BUF | 68 hr |
| Jan 13, 2:38 PM EST | Wind Chill Advisory | BUF | 19 hr |
| Jan 17, 8:30 AM EST | Winter Weather Advisory | BUF | 37 hr |
| Jan 23, 12:51 PM EST | Winter Weather Advisory | BUF | 15 hr |
| Jan 23, 2:30 PM EST | Special Weather Statement | BUF | 60 min |
| Jan 23, 2:35 PM EST | Severe Thunderstorm Warning | BUF | 40 min |
| Feb 1, 2:38 PM EST | Winter Weather Advisory | BUF | 34 hr |
| Feb 2, 12:48 PM EST | Lake Effect Snow Warning | BUF | 27 hr |
| Feb 3, 2:36 PM EST | Winter Weather Advisory | BUF | 37 hr |
| Feb 5, 3:47 AM EST | Winter Weather Advisory | BUF | 42 hr |
| Feb 5, 2:52 PM EST | Winter Storm Watch | BUF | 24 hr |
| Feb 6, 2:55 PM EST | Winter Storm Warning | BUF | 27 hr |
| Feb 6, 3:50 PM EST | Special Weather Statement | BUF | 55 min |
| Feb 6, 4:54 PM EST | Special Weather Statement | BUF | 51 min |
| Feb 6, 7:19 PM EST | Special Weather Statement | BUF | 41 min |
| Feb 7, 11:25 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 7, 2:53 PM EST | Lake Effect Snow Warning | BUF | 45 hr |
| Feb 8, 5:43 PM EST | Special Weather Statement | BUF | 92 min |
| Feb 8, 7:14 PM EST | Special Weather Statement | BUF | 91 min |
| Feb 8, 8:52 PM EST | Special Weather Statement | BUF | 83 min |
| Feb 8, 10:12 PM EST | Special Weather Statement | BUF | 93 min |
| Feb 9, 3:35 AM EST | Winter Weather Advisory | BUF | 66 hr |
| Feb 9, 8:45 AM EST | Special Weather Statement | BUF | 90 min |
| Feb 11, 10:48 AM EST | Special Weather Statement | BUF | 57 min |
| Feb 11, 11:45 AM EST | Special Weather Statement | BUF | 60 min |
| Feb 14, 7:56 AM EST | Special Weather Statement | BUF | 94 min |
| Feb 18, 4:23 AM EST | Flood Watch | BUF | 4 days |
| Feb 22, 8:41 PM EST | High Wind Watch | BUF | 42 hr |
| Feb 23, 3:11 AM EST | Winter Weather Advisory | BUF | 13 hr |
| Feb 24, 3:33 AM EST | Winter Weather Advisory | BUF | 30 hr |
| Feb 24, 2:58 PM EST | Wind Advisory | BUF | 24 hr |
| Feb 28, 3:53 AM EST | Winter Storm Watch | BUF | 23 hr |
| Mar 1, 3:12 AM EST | Winter Storm Warning | BUF | 42 hr |
| Mar 6, 2:28 PM EST | Winter Storm Watch | BUF | 13 hr |
| Mar 7, 3:39 AM EST | Winter Weather Advisory | BUF | 3 days |
| Mar 12, 1:52 PM EDT | Winter Weather Advisory | BUF | 60 hr |
| Mar 13, 4:32 AM EDT | Winter Storm Warning | BUF | 50 hr |
| Mar 30, 1:47 PM EDT | Wind Advisory | BUF | 39 hr |
| Apr 2, 4:36 AM EDT | High Wind Watch | BUF | 34 hr |
| Apr 3, 4:58 AM EDT | High Wind Warning | BUF | 42 hr |
| Apr 4, 7:43 PM EDT | Special Weather Statement | BUF | 62 min |
| Apr 13, 4:30 AM EDT | Winter Weather Advisory | BUF | 57 hr |
| Apr 13, 3:04 PM EDT | Flood Watch | BUF | 71 hr |
| Apr 14, 4:15 AM EDT | Winter Storm Warning | BUF | 46 hr |
| Apr 14, 4:21 AM EDT | High Wind Watch | BUF | 24 hr |
| Apr 14, 7:55 PM EDT | Mesoscale Discussion | SPC | 5 hr |
| Apr 15, 4:17 AM EDT | High Wind Warning | BUF | 36 hr |
| Apr 17, 12:49 PM EDT | Winter Weather Advisory | BUF | 23 hr |
| May 4, 3:58 AM EDT | Wind Advisory | BUF | 19 hr |
| May 4, 2:18 PM EDT | Mesoscale Discussion | SPC | 87 min |
| 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, 4:04 PM EDT | High Wind Warning | BUF | 7 hr |
| May 4, 4:20 PM EDT | Mesoscale Discussion | SPC | 55 min |
| May 4, 4:27 PM EDT | Severe Thunderstorm Warning | BUF | 33 min |
| May 4, 4:50 PM EDT | Severe Thunderstorm Warning | BUF | 22 min |
| May 4, 4:59 PM EDT | Severe Thunderstorm Warning | BUF | 61 min |
| May 4, 5:32 PM EDT | Severe Thunderstorm Warning | BUF | 58 min |
| May 4, 5:44 PM EDT | Severe Thunderstorm Warning | BUF | 61 min |
| May 22, 9:01 PM EDT | Dense Fog Advisory | BUF | 5 hr |
| Jun 1, 5:59 PM EDT | Flash Flood Warning | BUF | 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, 6:51 PM EDT | Severe Thunderstorm Warning | BUF | 54 min |
| Jun 13, 7:12 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Jun 13, 7:43 PM EDT | Severe Thunderstorm Warning | BUF | 62 min |
| Jun 18, 12:19 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jun 18, 1:33 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 18, 2:10 PM EDT | Special Weather Statement | BUF | 35 min |
| Jun 18, 2:14 PM EDT | Severe Thunderstorm Warning | BUF | 46 min |
| Jun 29, 3:33 AM EDT | Heat Advisory | BUF | 4 days |
| Jun 29, 2:10 PM EDT | Excessive Heat Warning | BUF | 3 days |
| Jul 2, 3:30 PM EDT | Severe Thunderstorm Warning | BUF | 60 min |
| Jul 2, 3:55 PM EDT | Severe Thunderstorm Warning | BUF | 49 min |
| Jul 2, 4:20 PM EDT | Special Weather Statement | ALY | 40 min |
| Jul 3, 4:36 PM EDT | Heat Advisory | BUF | 27 hr |
| Jul 4, 2:44 PM EDT | Heat Advisory | BUF | 29 hr |
| Jul 6, 1:02 AM EDT | Special Weather Statement | BUF | 58 min |
| Jul 10, 12:57 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 23, 5:53 PM EDT | Special Weather Statement | BUF | 22 min |
| Jul 26, 10:54 PM EDT | Special Weather Statement | BUF | 66 min |
| Jul 27, 12:46 AM EDT | Special Weather Statement | BUF | 29 min |
| Jul 27, 1:34 AM EDT | Special Weather Statement | BUF | 41 min |
| Jul 27, 1:48 AM EDT | Special Weather Statement | BUF | 57 min |
| Aug 6, 3:12 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 6, 4:43 PM EDT | Severe Thunderstorm Warning | BUF | 41 min |
| Aug 7, 4:35 AM EDT | Severe Thunderstorm Warning | BUF | 55 min |
| Aug 12, 7:08 PM EDT | Special Weather Statement | BUF | 37 min |
| Aug 14, 4:53 PM EDT | Special Weather Statement | BUF | 37 min |
| Aug 14, 5:27 PM EDT | Special Weather Statement | BUF | 48 min |
| Aug 15, 2:45 PM EDT | Special Weather Statement | ALY | 45 min |
| Aug 15, 3:04 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 27, 3:44 AM EDT | Heat Advisory | BUF | 63 hr |
| Aug 29, 1:19 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Aug 29, 2:14 PM EDT | Special Weather Statement | BUF | 61 min |
| Aug 29, 3:16 PM EDT | Special Weather Statement | BUF | 29 min |
| Sep 3, 1:48 PM EDT | Severe Thunderstorm Warning | BUF | 27 min |
| Sep 4, 1:45 PM EDT | Heat Advisory | BUF | 30 hr |
| Sep 21, 4:27 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Sep 21, 4:50 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Sep 21, 7:04 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Oct 4, 4:07 AM EDT | Frost Advisory | BUF | 28 hr |
| Oct 27, 1:44 PM EDT | Winter Weather Advisory | BUF | 18 hr |
| Nov 6, 4:30 PM EST | Special Weather Statement | BUF | 30 min |
| Nov 9, 3:53 AM EST | Winter Weather Advisory | BUF | 53 hr |
| Nov 10, 12:46 PM EST | Special Weather Statement | BUF | 59 min |
| Nov 10, 1:47 PM EST | Special Weather Statement | BUF | 58 min |
| Nov 10, 4:34 PM EST | Snow Squall Warning | BUF | 41 min |
| Nov 10, 5:12 PM EST | Snow Squall Warning | BUF | 48 min |
| Nov 12, 3:24 AM EST | Winter Weather Advisory | BUF | 30 hr |
| Nov 14, 2:19 PM EST | Winter Weather Advisory | BUF | 43 hr |
| Nov 15, 3:39 AM EST | Winter Storm Warning | BUF | 30 hr |
| Nov 15, 10:06 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Nov 16, 3:56 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Nov 16, 12:50 PM EST | Winter Weather Advisory | BUF | 21 hr |
| Nov 20, 3:41 AM EST | Winter Weather Advisory | BUF | 39 hr |
| Nov 21, 9:09 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Nov 21, 10:09 AM EST | Snow Squall Warning | BUF | 36 min |
| Nov 25, 2:07 PM EST | Winter Storm Watch | BUF | 28 hr |
| Nov 26, 5:53 PM EST | Winter Weather Advisory | BUF | 48 hr |
| Dec 1, 2:52 AM EST | Winter Weather Advisory | BUF | 23 hr |
| Dec 5, 3:53 AM EST | Winter Weather Advisory | BUF | 45 hr |
| Dec 5, 8:23 PM EST | Winter Storm Warning | BUF | 29 hr |
| Dec 6, 4:03 PM EST | Special Weather Statement | BUF | 87 min |
| Dec 6, 5:36 PM EST | Special Weather Statement | BUF | 69 min |
| Dec 6, 8:19 PM EST | Special Weather Statement | BUF | 71 min |
| Dec 11, 8:03 PM EST | Special Weather Statement | BUF | 42 min |
| Dec 27, 3:39 AM EST | Winter Weather Advisory | BUF | 26 hr |
| Dec 28, 2:59 AM EST | Mesoscale Discussion | SPC | 6 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 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.