Alert archive / New York / Rockland County
Weather alerts in Rockland County, New York, 2016
123 weather alerts in 2016, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Rockland County and its neighbors
Each county as a circle sized by its count in 2016. Tap one for its archive.
- Alerts
- 123
- Warnings
- 17
- Watches
- 16
- Advisories
- 32
- Busiest month
- July28 alerts
- Busiest day
- February 25, 20168 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Rockland County, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 8 | 5 | 38% | 1 | 100% | 3 min |
| Flash flood warnings | 0 | 1 | 0% |
Each office's whole area, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS New York, NY: tornado warnings | 1 | 1 | 0% | 1 | 100% | 4 min |
| NWS New York, NY: severe thunderstorm warnings | 64 | 37 | 42% | 127 | 61% | 23 min |
| NWS New York, NY: flash flood warnings | 15 | 9 | 40% | 49 | 82% | 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 10, 6:46 AM EST | Areal Flood Advisory | OKX | 3 hr |
| Jan 10, 9:51 AM EST | Areal Flood Advisory | OKX | 114 min |
| Jan 10, 11:37 AM EST | Areal Flood Advisory | OKX | 113 min |
| Jan 10, 2:51 PM EST | Special Weather Statement | OKX | 69 min |
| Jan 10, 3:32 PM EST | Special Weather Statement | OKX | 58 min |
| Jan 12, 3:48 PM EST | Wind Advisory | OKX | 18 hr |
| Jan 21, 3:42 AM EST | Winter Storm Watch | OKX | 43 hr |
| Jan 22, 4:18 AM EST | Winter Storm Warning | OKX | 48 hr |
| Jan 23, 4:20 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Jan 23, 8:51 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 23, 9:26 AM EST | Special Weather Statement | OKX | 3 hr |
| Jan 23, 12:44 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 23, 6:40 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 23, 11:02 PM EST | Areal Flood Advisory | OKX | 3 hr |
| Feb 4, 4:06 PM EST | Winter Weather Advisory | OKX | 20 hr |
| Feb 5, 7:44 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 7, 2:22 PM EST | Winter Weather Advisory | OKX | 28 hr |
| Feb 9, 4:32 AM EST | Winter Weather Advisory | OKX | 17 hr |
| Feb 11, 4:05 PM EST | Wind Chill Watch | OKX | 24 hr |
| Feb 12, 4:04 AM EST | Wind Chill Warning | OKX | 56 hr |
| Feb 14, 3:45 PM EST | Winter Weather Advisory | OKX | 39 hr |
| Feb 15, 6:19 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Feb 16, 1:32 PM EST | Special Weather Statement | OKX | 88 min |
| Feb 16, 7:15 PM EST | Areal Flood Advisory | OKX | 3 hr |
| Feb 23, 4:45 AM EST | Winter Weather Advisory | OKX | 23 hr |
| Feb 24, 6:46 PM EST | Mesoscale Discussion | SPC | 119 min |
| Feb 24, 7:44 PM EST | Severe Thunderstorm Watch | SPC | 8 hr |
| Feb 24, 9:30 PM EST | Special Weather Statement | OKX | 60 min |
| Feb 24, 10:35 PM EST | Severe Thunderstorm Warning | OKX | 55 min |
| Feb 24, 10:39 PM EST | Mesoscale Discussion | SPC | 66 min |
| Feb 24, 11:26 PM EST | Severe Thunderstorm Warning | OKX | 64 min |
| Feb 24, 11:28 PM EST | Areal Flood Advisory | OKX | 3 hr |
| Feb 25, 2:16 AM EST | Areal Flood Advisory | OKX | 14 hr |
| Feb 25, 2:20 AM EST | River Flood Warning | OKX | 30 hr |
| Mar 17, 2:41 PM EDT | Special Weather Statement | OKX | 49 min |
| Mar 17, 7:53 PM EDT | Special Weather Statement | OKX | 22 min |
| Mar 28, 3:19 AM EDT | Wind Advisory | OKX | 32 hr |
| Apr 1, 4:00 AM EDT | High Wind Watch | OKX | 25 hr |
| Apr 1, 1:46 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Apr 2, 4:34 AM EDT | High Wind Warning | OKX | 33 hr |
| Apr 12, 3:38 PM EDT | Freeze Warning | OKX | 16 hr |
| Apr 13, 4:12 AM EDT | Freeze Watch | OKX | 11 hr |
| Apr 13, 3:29 PM EDT | Freeze Warning | OKX | 12 hr |
| Apr 16, 3:39 PM EDT | Frost Advisory | OKX | 15 hr |
| Apr 27, 3:28 AM EDT | Frost Advisory | OKX | 24 hr |
| May 14, 6:25 AM EDT | Dense Fog Advisory | OKX | 95 min |
| May 23, 6:13 PM EDT | Special Weather Statement | OKX | 32 min |
| May 23, 6:27 PM EDT | Special Weather Statement | OKX | 33 min |
| May 28, 5:32 PM EDT | Areal Flood Advisory | OKX | 118 min |
| Jun 5, 5:47 PM EDT | Severe Thunderstorm Warning | OKX | 58 min |
| Jun 7, 4:42 PM EDT | Special Weather Statement | OKX | 33 min |
| Jun 7, 5:14 PM EDT | Special Weather Statement | OKX | 46 min |
| Jun 8, 12:04 PM EDT | Special Weather Statement | OKX | 56 min |
| Jun 11, 2:32 PM EDT | Mesoscale Discussion | SPC | 58 min |
| Jun 28, 9:01 PM EDT | Special Weather Statement | OKX | 59 min |
| Jun 28, 10:59 PM EDT | Special Weather Statement | OKX | 61 min |
| Jul 1, 12:51 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Jul 1, 1:32 PM EDT | Tornado Watch | SPC | 8 hr |
| Jul 1, 4:15 PM EDT | Severe Thunderstorm Warning | OKX | 24 min |
| Jul 1, 4:52 PM EDT | Special Weather Statement | OKX | 53 min |
| Jul 1, 5:12 PM EDT | Severe Thunderstorm Warning | OKX | 48 min |
| Jul 1, 5:21 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Jul 2, 12:28 AM EDT | Special Weather Statement | OKX | 62 min |
| Jul 9, 8:56 PM EDT | Special Weather Statement | OKX | 34 min |
| Jul 9, 9:33 PM EDT | Special Weather Statement | OKX | 42 min |
| Jul 14, 12:58 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 14, 3:17 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Jul 18, 11:40 AM EDT | Mesoscale Discussion | SPC | 95 min |
| Jul 18, 12:05 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 18, 3:21 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Jul 18, 6:49 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Jul 24, 3:27 AM EDT | Heat Advisory | OKX | 39 hr |
| Jul 25, 12:43 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 25, 3:03 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Jul 25, 4:52 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Jul 25, 5:41 PM EDT | Special Weather Statement | OKX | 49 min |
| Jul 25, 5:49 PM EDT | Severe Thunderstorm Warning | OKX | 30 min |
| Jul 25, 6:27 PM EDT | Special Weather Statement | OKX | 48 min |
| Jul 25, 6:32 PM EDT | Severe Thunderstorm Warning | OKX | 43 min |
| Jul 25, 6:46 PM EDT | Areal Flood Advisory | OKX | 119 min |
| Jul 28, 2:32 PM EDT | Flash Flood Watch | OKX | 17 hr |
| Jul 30, 5:09 PM EDT | Areal Flood Advisory | OKX | 111 min |
| Jul 31, 1:25 AM EDT | Areal Flood Advisory | OKX | 2 hr |
| Jul 31, 4:56 AM EDT | Flash Flood Watch | OKX | 10 hr |
| Jul 31, 9:44 PM EDT | Areal Flood Advisory | OKX | 3 hr |
| Aug 1, 11:32 AM EDT | Flash Flood Watch | OKX | 16 hr |
| Aug 6, 2:19 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 6, 4:01 PM EDT | Special Weather Statement | OKX | 44 min |
| Aug 9, 3:45 PM EDT | Heat Advisory | OKX | 5 days |
| Aug 11, 2:27 PM EDT | Excessive Heat Watch | OKX | 24 hr |
| Aug 11, 7:30 PM EDT | Special Weather Statement | OKX | 45 min |
| Aug 11, 7:56 PM EDT | Areal Flood Advisory | OKX | 2 hr |
| Aug 11, 11:02 PM EDT | Areal Flood Advisory | OKX | 118 min |
| Aug 12, 4:15 AM EDT | Excessive Heat Warning | OKX | 65 hr |
| Aug 12, 2:01 PM EDT | Special Weather Statement | OKX | 44 min |
| Aug 13, 6:17 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 13, 7:56 PM EDT | Special Weather Statement | OKX | 49 min |
| Aug 13, 8:53 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 13, 11:19 PM EDT | Special Weather Statement | OKX | 26 min |
| Aug 13, 11:49 PM EDT | Severe Thunderstorm Warning | OKX | 23 min |
| Aug 14, 12:18 AM EDT | Special Weather Statement | OKX | 27 min |
| Aug 14, 1:47 AM EDT | Special Weather Statement | OKX | 28 min |
| Aug 14, 1:48 AM EDT | Special Weather Statement | OKX | 27 min |
| Aug 14, 1:45 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 14, 4:06 PM EDT | Special Weather Statement | OKX | 39 min |
| Oct 14, 3:23 AM EDT | Frost Advisory | OKX | 30 hr |
| Oct 24, 3:16 PM EDT | Freeze Watch | OKX | 13 hr |
| Oct 25, 3:50 AM EDT | Freeze Warning | OKX | 29 hr |
| Oct 30, 2:20 PM EDT | Special Weather Statement | OKX | 40 min |
| Oct 30, 2:48 PM EDT | Special Weather Statement | OKX | 42 min |
| Nov 15, 10:05 AM EST | Special Weather Statement | OKX | 115 min |
| Nov 19, 3:25 PM EST | Wind Advisory | OKX | 52 hr |
| Nov 19, 11:48 PM EST | Special Weather Statement | OKX | 87 min |
| Dec 10, 3:54 PM EST | Winter Weather Advisory | OKX | 41 hr |
| Dec 14, 3:20 PM EST | High Wind Watch | OKX | 13 hr |
| Dec 14, 3:20 PM EST | Wind Advisory | OKX | 24 hr |
| Dec 15, 3:52 AM EST | High Wind Warning | OKX | 24 hr |
| Dec 16, 4:20 AM EST | Winter Weather Advisory | OKX | 35 hr |
| Dec 17, 6:30 AM EST | Special Weather Statement | OKX | 60 min |
| Dec 17, 6:57 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Dec 17, 9:04 AM EST | Special Weather Statement | OKX | 41 min |
| Dec 17, 10:02 AM EST | Special Weather Statement | OKX | 58 min |
| Dec 18, 1:11 AM EST | Dense Fog Advisory | OKX | 7 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.