Alert archive / New York / Suffolk County
Weather alerts in Suffolk County, New York, 2017
194 weather alerts in 2017, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Suffolk County and its neighbors
Each county as a circle sized by its count in 2017. Tap one for its archive.
- Alerts
- 194
- Warnings
- 25
- Watches
- 18
- Advisories
- 72
- Busiest month
- March24 alerts
- Busiest day
- July 13, 20178 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Suffolk County, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 2 | 1 | 50% | 12 | 8% | 3 min |
| Flash flood warnings | 4 | 0 | 100% | 8 | 0% |
Each office's whole area, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS New York, NY: tornado warnings | 1 | 0 | 100% | 0 | ||
| NWS New York, NY: severe thunderstorm warnings | 41 | 31 | 24% | 97 | 65% | 23 min |
| NWS New York, NY: flash flood warnings | 21 | 13 | 38% | 48 | 54% | 52 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, 3:14 PM EST | Winter Weather Advisory | OKX | 19 hr |
| Jan 6, 4:03 AM EST | Winter Storm Watch | OKX | 11 hr |
| Jan 6, 4:46 AM EST | Special Weather Statement | OKX | 89 min |
| Jan 6, 3:22 PM EST | Winter Storm Warning | OKX | 33 hr |
| Jan 6, 3:22 PM EST | Winter Weather Advisory | OKX | 343 days |
| Jan 7, 10:29 AM EST | Special Weather Statement | OKX | 61 min |
| Jan 7, 11:27 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 21, 5:20 AM EST | High Wind Watch | OKX | 281 days |
| Jan 21, 4:04 PM EST | Coastal Flood Watch | OKX | 25 hr |
| Jan 21, 6:52 PM EST | Dense Fog Advisory | OKX | 10 hr |
| Jan 22, 4:55 AM EST | High Wind Warning | OKX | 42 hr |
| Jan 22, 5:24 AM EST | Coastal Flood Advisory | OKX | 27 hr |
| Jan 22, 11:23 AM EST | Wind Advisory | OKX | 43 hr |
| Jan 22, 4:35 PM EST | Coastal Flood Warning | OKX | 30 hr |
| Jan 23, 4:16 AM EST | Coastal Flood Watch | OKX | 10 hr |
| Jan 23, 2:20 PM EST | Coastal Flood Warning | OKX | 21 hr |
| Jan 23, 8:51 PM EST | Coastal Flood Statement | OKX | 11 hr |
| Jan 24, 7:31 AM EST | Coastal Flood Advisory | OKX | 3 hr |
| Jan 24, 11:12 AM EST | Coastal Flood Advisory | OKX | 108 min |
| Feb 1, 12:47 AM EST | Dense Fog Advisory | OKX | 2 hr |
| Feb 7, 3:22 PM EST | Winter Storm Watch | OKX | 12 hr |
| Feb 8, 3:42 AM EST | Winter Storm Warning | OKX | 38 hr |
| Feb 8, 3:17 PM EST | Blizzard Warning | OKX | 27 hr |
| Feb 9, 4:55 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 9, 9:21 AM EST | Special Weather Statement | OKX | 84 min |
| Feb 9, 11:05 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 9, 11:32 AM EST | Special Weather Statement | OKX | 88 min |
| Feb 11, 3:43 AM EST | Winter Weather Advisory | OKX | 45 hr |
| Feb 12, 4:15 AM EST | High Wind Watch | OKX | 11 hr |
| Feb 12, 3:35 PM EST | Wind Advisory | OKX | 26 hr |
| Feb 13, 1:02 PM EST | High Wind Warning | OKX | 5 hr |
| Feb 22, 11:44 PM EST | Dense Fog Advisory | OKX | 11 hr |
| Feb 25, 12:13 AM EST | Dense Fog Advisory | OKX | 13 hr |
| Feb 25, 5:26 PM EST | Dense Fog Advisory | OKX | 4 hr |
| Mar 1, 3:45 AM EST | Wind Advisory | OKX | 23 hr |
| Mar 1, 7:26 AM EST | Dense Fog Advisory | OKX | 5 hr |
| Mar 2, 3:14 AM EST | High Wind Warning | OKX | 10 hr |
| Mar 2, 12:52 PM EST | Wind Advisory | OKX | 5 hr |
| Mar 8, 6:42 AM EST | Special Weather Statement | OKX | 48 min |
| Mar 9, 3:27 AM EST | Winter Weather Advisory | OKX | 37 hr |
| Mar 9, 3:07 PM EST | Winter Storm Warning | OKX | 18 hr |
| Mar 10, 8:18 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Mar 10, 11:06 AM EST | Special Weather Statement | OKX | 54 min |
| Mar 10, 12:21 PM EST | Special Weather Statement | OKX | 54 min |
| Mar 11, 3:38 PM EST | Blizzard Watch | OKX | 36 hr |
| Mar 12, 4:12 PM EDT | Winter Storm Warning | OKX | 40 hr |
| Mar 12, 4:23 PM EDT | Coastal Flood Watch | OKX | 16 hr |
| Mar 13, 4:18 AM EDT | Blizzard Warning | OKX | 35 hr |
| Mar 13, 8:33 AM EDT | Coastal Flood Warning | OKX | 31 hr |
| Mar 13, 8:33 AM EDT | Coastal Flood Advisory | OKX | 31 hr |
| Mar 14, 8:55 AM EDT | Wind Advisory | OKX | 9 hr |
| Mar 14, 10:11 AM EDT | Areal Flood Advisory | OKX | 3 hr |
| Mar 14, 2:03 PM EDT | Areal Flood Advisory | OKX | 3 hr |
| Mar 22, 4:08 AM EDT | Wind Advisory | OKX | 14 hr |
| Mar 27, 9:20 AM EDT | Dense Fog Advisory | OKX | 3 hr |
| Mar 27, 3:49 PM EDT | Dense Fog Advisory | OKX | 11 hr |
| Mar 28, 12:04 PM EDT | Areal Flood Advisory | OKX | 116 min |
| Mar 31, 3:57 AM EDT | Coastal Flood Advisory | OKX | 25 hr |
| Apr 4, 3:27 PM EDT | Flood Watch | OKX | 50 hr |
| Apr 4, 9:52 PM EDT | Special Weather Statement | OKX | 8 min |
| Apr 5, 4:42 PM EDT | Coastal Flood Advisory | OKX | 27 hr |
| Apr 6, 3:12 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Apr 6, 5:44 PM EDT | Severe Thunderstorm Warning | OKX | 19 min |
| Apr 6, 6:25 PM EDT | Special Weather Statement | OKX | 50 min |
| Apr 25, 3:48 AM EDT | Coastal Flood Advisory | OKX | 21 hr |
| Apr 26, 3:44 PM EDT | Dense Fog Advisory | OKX | 14 hr |
| Apr 27, 3:52 PM EDT | Coastal Flood Statement | OKX | 10 hr |
| May 5, 1:21 PM EDT | Areal Flood Advisory | OKX | 4 hr |
| May 13, 3:35 AM EDT | Coastal Flood Statement | OKX | 21 hr |
| May 14, 5:41 PM EDT | Special Weather Statement | OKX | 49 min |
| May 19, 4:59 PM EDT | Special Weather Statement | OKX | 31 min |
| May 24, 4:35 AM EDT | Coastal Flood Statement | OKX | 19 hr |
| May 24, 3:58 PM EDT | Coastal Flood Advisory | OKX | 33 hr |
| May 26, 3:50 AM EDT | Coastal Flood Statement | OKX | 22 hr |
| May 26, 12:00 PM EDT | Rip Current Statement | OKX | 9 hr |
| May 27, 10:41 AM EDT | Coastal Flood Statement | OKX | 16 hr |
| May 28, 6:30 AM EDT | Coastal Flood Statement | OKX | 22 hr |
| May 31, 9:11 PM EDT | Dense Fog Advisory | OKX | 6 hr |
| Jun 1, 4:09 PM EDT | Special Weather Statement | OKX | 51 min |
| Jun 8, 4:38 PM EDT | Rip Current Statement | OKX | 50 hr |
| Jun 13, 2:25 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 15, 4:01 PM EDT | Rip Current Statement | OKX | 4 days |
| Jun 16, 10:58 AM EDT | Areal Flood Advisory | OKX | 107 min |
| Jun 16, 12:36 PM EDT | Special Weather Statement | OKX | 54 min |
| Jun 16, 1:35 PM EDT | Special Weather Statement | OKX | 40 min |
| Jun 17, 4:34 PM EDT | Rip Current Statement | OKX | 52 hr |
| Jun 17, 8:26 PM EDT | Dense Fog Advisory | OKX | 7 hr |
| Jun 19, 11:13 AM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 20, 3:13 AM EDT | Rip Current Statement | OKX | 18 hr |
| Jun 21, 5:51 AM EDT | Rip Current Statement | OKX | 15 hr |
| Jun 21, 2:38 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 22, 3:49 AM EDT | Coastal Flood Statement | OKX | 19 hr |
| Jun 24, 6:54 AM EDT | Mesoscale Discussion | SPC | 66 min |
| Jun 24, 7:19 AM EDT | Areal Flood Advisory | OKX | 116 min |
| Jun 24, 8:35 AM EDT | Areal Flood Advisory | OKX | 3 hr |
| Jun 24, 12:00 PM EDT | Rip Current Statement | OKX | 9 hr |
| Jun 24, 12:00 PM EDT | High Surf Advisory | OKX | 9 hr |
| Jun 27, 12:00 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 28, 3:37 PM EDT | Rip Current Statement | OKX | 3 days |
| Jul 1, 10:53 AM EDT | Special Weather Statement | OKX | 112 min |
| Jul 7, 11:47 AM EDT | Areal Flood Advisory | OKX | 3 hr |
| Jul 10, 4:49 PM EDT | Rip Current Statement | OKX | 27 hr |
| Jul 11, 5:20 PM EDT | Severe Thunderstorm Warning | OKX | 25 min |
| Jul 11, 6:58 PM EDT | Special Weather Statement | OKX | 32 min |
| Jul 12, 8:27 PM EDT | Special Weather Statement | OKX | 33 min |
| Jul 13, 11:09 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 13, 1:11 PM EDT | Flash Flood Watch | OKX | 6 hr |
| Jul 13, 1:57 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 13, 4:43 PM EDT | Mesoscale Discussion | SPC | 62 min |
| Jul 13, 5:07 PM EDT | Special Weather Statement | OKX | 53 min |
| Jul 13, 5:37 PM EDT | Special Weather Statement | OKX | 38 min |
| Jul 13, 6:10 PM EDT | Special Weather Statement | OKX | 50 min |
| Jul 19, 3:17 AM EDT | Heat Advisory | OKX | 63 hr |
| Jul 23, 1:09 AM EDT | Areal Flood Advisory | OKX | 2 hr |
| Jul 23, 4:19 AM EDT | Coastal Flood Statement | OKX | 21 hr |
| Jul 23, 3:41 PM EDT | Flash Flood Watch | OKX | 15 hr |
| Jul 23, 5:29 PM EDT | Rip Current Statement | OKX | 52 hr |
| Jul 28, 2:29 PM EDT | Areal Flood Advisory | OKX | 2 hr |
| Jul 28, 6:08 PM EDT | Rip Current Statement | OKX | 51 hr |
| Aug 2, 1:30 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 6, 4:12 PM EDT | Rip Current Statement | OKX | 24 hr |
| Aug 7, 3:00 AM EDT | Flash Flood Watch | OKX | 15 hr |
| Aug 12, 10:26 PM EDT | Rip Current Statement | OKX | 22 hr |
| Aug 14, 12:02 PM EDT | Rip Current Statement | OKX | 57 hr |
| Aug 18, 9:24 AM EDT | Areal Flood Advisory | OKX | 51 min |
| Aug 18, 9:59 AM EDT | Flash Flood Warning | OKX | 61 min |
| Aug 18, 10:24 AM EDT | Areal Flood Advisory | OKX | 51 min |
| Aug 18, 11:06 AM EDT | Areal Flood Advisory | OKX | 54 min |
| Aug 18, 11:17 AM EDT | Areal Flood Advisory | OKX | 118 min |
| Aug 18, 12:30 PM EDT | Areal Flood Advisory | OKX | 60 min |
| Aug 19, 3:25 AM EDT | Rip Current Statement | OKX | 17 hr |
| Aug 21, 4:21 PM EDT | Rip Current Statement | OKX | 29 hr |
| Aug 22, 10:53 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Aug 23, 12:06 PM EDT | Rip Current Statement | OKX | 6 hr |
| Aug 27, 3:20 PM EDT | Rip Current Statement | OKX | 4 days |
| Aug 29, 3:58 AM EDT | High Surf Advisory | OKX | 40 hr |
| Sep 2, 4:21 PM EDT | Rip Current Statement | OKX | 29 hr |
| Sep 4, 3:38 PM EDT | Rip Current Statement | OKX | 6 days |
| Sep 6, 8:40 AM EDT | Special Weather Statement | OKX | 65 min |
| Sep 6, 10:35 PM EDT | Areal Flood Advisory | OKX | 3 hr |
| Sep 11, 4:16 PM EDT | Rip Current Statement | OKX | 3 days |
| Sep 16, 4:32 AM EDT | Rip Current Statement | OKX | 37 hr |
| Sep 16, 4:28 PM EDT | High Surf Advisory | OKX | 4 days |
| Sep 16, 11:38 PM EDT | Dense Fog Advisory | OKX | 9 hr |
| Sep 17, 5:12 PM EDT | Tropical Storm Watch | OKX | 60 hr |
| Sep 17, 7:01 PM EDT | Rip Current Statement | OKX | 5 days |
| Sep 18, 5:48 PM EDT | Coastal Flood Warning | OKX | 30 hr |
| Sep 18, 5:48 PM EDT | Coastal Flood Advisory | OKX | 42 hr |
| Sep 19, 5:07 PM EDT | Coastal Flood Advisory | OKX | 55 hr |
| Sep 21, 8:10 PM EDT | Coastal Flood Advisory | OKX | 28 hr |
| Sep 24, 3:30 AM EDT | Rip Current Statement | OKX | 5 days |
| Sep 24, 4:06 PM EDT | High Surf Advisory | OKX | 4 days |
| Sep 28, 4:37 PM EDT | Rip Current Statement | OKX | 25 hr |
| Sep 30, 11:16 AM EDT | Flash Flood Warning | OKX | 119 min |
| Sep 30, 11:27 AM EDT | Flash Flood Warning | OKX | 2 hr |
| Sep 30, 1:26 PM EDT | Areal Flood Advisory | OKX | 2 hr |
| Oct 14, 10:56 PM EDT | Dense Fog Advisory | OKX | 8 hr |
| Oct 23, 3:58 PM EDT | Wind Advisory | OKX | 34 hr |
| Oct 24, 7:44 PM EDT | Areal Flood Advisory | OKX | 2 hr |
| Oct 24, 8:55 PM EDT | Mesoscale Discussion | SPC | 65 min |
| Oct 24, 10:43 PM EDT | Flash Flood Watch | OKX | 6 hr |
| Oct 24, 11:12 PM EDT | Flash Flood Warning | OKX | 63 min |
| Oct 26, 1:17 PM EDT | Special Weather Statement | OKX | 43 min |
| Oct 28, 3:37 AM EDT | Flash Flood Watch | OKX | 49 hr |
| Oct 28, 3:18 PM EDT | High Wind Warning | OKX | 37 hr |
| Oct 29, 1:25 PM EDT | Coastal Flood Advisory | OKX | 19 hr |
| Oct 29, 3:51 PM EDT | Wind Advisory | OKX | 20 hr |
| Oct 29, 5:24 PM EDT | Areal Flood Advisory | OKX | 2 hr |
| Oct 29, 5:50 PM EDT | Areal Flood Warning | OKX | 6 hr |
| Oct 29, 6:13 PM EDT | Areal Flood Advisory | OKX | 2 hr |
| Oct 29, 8:38 PM EDT | Areal Flood Advisory | OKX | 3 hr |
| Oct 29, 8:48 PM EDT | Special Weather Statement | OKX | 117 min |
| Oct 29, 11:05 PM EDT | Areal Flood Advisory | OKX | 115 min |
| Oct 30, 8:46 AM EDT | Coastal Flood Statement | OKX | 6 hr |
| Oct 31, 3:42 PM EDT | Frost Advisory | OKX | 17 hr |
| Nov 7, 5:55 PM EST | Coastal Flood Statement | OKX | 21 hr |
| Nov 9, 3:27 AM EST | Freeze Watch | OKX | 12 hr |
| Nov 9, 3:51 PM EST | Freeze Warning | OKX | 42 hr |
| Nov 16, 9:35 AM EST | Special Weather Statement | OKX | 55 min |
| Nov 18, 3:39 AM EST | Wind Advisory | OKX | 38 hr |
| Nov 18, 3:24 PM EST | Coastal Flood Statement | OKX | 21 hr |
| Nov 18, 3:36 PM EST | High Wind Warning | OKX | 3 hr |
| Nov 18, 6:06 PM EST | High Wind Warning | OKX | 9 hr |
| Nov 18, 6:06 PM EST | Wind Advisory | OKX | 24 hr |
| Dec 3, 4:44 PM EST | Coastal Flood Statement | OKX | 20 hr |
| Dec 4, 4:27 PM EST | Coastal Flood Statement | OKX | 21 hr |
| Dec 5, 11:36 PM EST | Special Weather Statement | OKX | 54 min |
| Dec 8, 3:31 AM EST | Winter Weather Advisory | OKX | 46 hr |
| Dec 8, 3:22 PM EST | Winter Storm Warning | OKX | 27 hr |
| Dec 13, 2:49 PM EST | Winter Weather Advisory | OKX | 19 hr |
| Dec 15, 5:13 PM EST | Special Weather Statement | OKX | 107 min |
| Dec 17, 3:28 PM EST | Winter Weather Advisory | OKX | 17 hr |
| Dec 24, 2:42 AM EST | Wind Advisory | OKX | 37 hr |
| Dec 29, 3:33 PM EST | Winter Weather Advisory | OKX | 27 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 | 2 |
| Severe Thunderstorm Watch | 2 |
| Mesoscale Discussion | 14 |
| Special Weather Statement | 26 |
| Flooding | |
| Areal Flood Warning | 1 |
| Flash Flood Warning | 4 |
| Flash Flood Watch | 5 |
| Flood Watch | 1 |
| Areal Flood Advisory | 22 |
| Winter | |
| Blizzard Warning | 2 |
| Winter Storm Warning | 5 |
| Blizzard Watch | 1 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 8 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Freeze Warning | 1 |
| Freeze Watch | 1 |
| Frost Advisory | 1 |
| Wind and dust | |
| High Wind Warning | 6 |
| High Wind Watch | 2 |
| Wind Advisory | 11 |
| Fog and smoke | |
| Dense Fog Advisory | 13 |
| Tropical | |
| Tropical Storm Watch | 1 |
| Coast and beach | |
| Coastal Flood Warning | 4 |
| Coastal Flood Watch | 3 |
| Coastal Flood Advisory | 12 |
| High Surf Advisory | 4 |
| Coastal Flood Statement | 14 |
| Rip Current Statement | 25 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20162018
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.