Alert archive / New York / Bronx County
Weather alerts in Bronx County, New York, 2020
143 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Bronx County and its neighbors
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Alerts
- 143
- Warnings
- 24
- Watches
- 16
- Advisories
- 41
- Busiest month
- July33 alerts
- Busiest day
- July 22, 20208 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
0 of 2 tornado warnings covering Bronx County in 2020 had a tornado report inside them.
Bronx County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 11 | 10 | 9% | 2 | 100% | 18 min |
| Flash flood warnings | 4 | 2 | 50% | 0 |
Each office's whole area, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS New York, NY: tornado warnings | 8 | 1 | 88% | 3 | 33% | 2 min |
| NWS New York, NY: severe thunderstorm warnings | 104 | 62 | 40% | 196 | 85% | 26 min |
| NWS New York, NY: flash flood warnings | 30 | 17 | 43% | 64 | 88% | 68 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 4, 11:36 AM EST | Dense Fog Advisory | OKX | 6 hr |
| Jan 7, 3:39 PM EST | Wind Advisory | OKX | 27 hr |
| Jan 8, 9:08 AM EST | Special Weather Statement | OKX | 37 min |
| Jan 8, 1:44 PM EST | Special Weather Statement | OKX | 46 min |
| Jan 8, 2:33 PM EST | Special Weather Statement | OKX | 42 min |
| Jan 11, 1:12 PM EST | Wind Advisory | OKX | 24 hr |
| Jan 15, 1:19 PM EST | Wind Advisory | OKX | 30 hr |
| Jan 17, 3:54 AM EST | Winter Weather Advisory | OKX | 45 hr |
| Jan 24, 3:27 AM EST | Coastal Flood Statement | OKX | 36 hr |
| Feb 6, 3:37 PM EST | Wind Advisory | OKX | 30 hr |
| Feb 6, 8:13 PM EST | High Wind Warning | OKX | 23 hr |
| Feb 27, 10:08 AM EST | Wind Advisory | OKX | 8 hr |
| Mar 3, 10:31 PM EST | Special Weather Statement | OKX | 44 min |
| Mar 12, 3:40 AM EDT | Coastal Flood Statement | OKX | 24 hr |
| Mar 20, 5:40 AM EDT | Dense Fog Advisory | OKX | 8 hr |
| Apr 3, 4:04 PM EDT | Coastal Flood Statement | OKX | 18 hr |
| Apr 7, 4:25 PM EDT | Coastal Flood Statement | OKX | 34 hr |
| Apr 8, 3:39 PM EDT | Coastal Flood Statement | OKX | 22 hr |
| Apr 8, 3:44 PM EDT | Wind Advisory | OKX | 28 hr |
| Apr 9, 11:09 AM EDT | Mesoscale Discussion | SPC | 66 min |
| Apr 9, 12:01 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Apr 9, 1:26 PM EDT | Special Weather Statement | OKX | 49 min |
| Apr 11, 4:12 PM EDT | High Wind Watch | OKX | 24 hr |
| Apr 12, 3:54 PM EDT | High Wind Warning | OKX | 27 hr |
| Apr 12, 5:01 PM EDT | Coastal Flood Statement | OKX | 25 hr |
| Apr 13, 9:35 AM EDT | Areal Flood Advisory | OKX | 115 min |
| Apr 13, 2:42 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Apr 13, 4:56 PM EDT | Special Weather Statement | OKX | 49 min |
| Apr 20, 3:51 PM EDT | Wind Advisory | OKX | 30 hr |
| Apr 21, 1:27 PM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Apr 21, 2:12 PM EDT | Severe Thunderstorm Warning | OKX | 48 min |
| Apr 21, 2:33 PM EDT | Tornado Warning | OKX | 27 min |
| Apr 30, 10:47 AM EDT | Wind Advisory | OKX | 12 hr |
| May 5, 3:37 PM EDT | Coastal Flood Advisory | OKX | 33 hr |
| May 6, 4:52 PM EDT | Coastal Flood Advisory | OKX | 33 hr |
| May 7, 3:41 PM EDT | Coastal Flood Statement | OKX | 34 hr |
| May 7, 3:41 PM EDT | Coastal Flood Advisory | OKX | 34 hr |
| May 11, 3:31 PM EDT | Special Weather Statement | OKX | 29 min |
| May 11, 4:50 PM EDT | Special Weather Statement | OKX | 40 min |
| May 29, 2:12 PM EDT | Special Weather Statement | OKX | 48 min |
| May 29, 7:53 PM EDT | Special Weather Statement | OKX | 52 min |
| Jun 3, 6:46 PM EDT | Coastal Flood Statement | OKX | 29 hr |
| Jun 3, 6:58 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Jun 3, 9:03 PM EDT | Special Weather Statement | OKX | 42 min |
| Jun 5, 12:19 AM EDT | Special Weather Statement | OKX | 41 min |
| Jun 6, 2:16 PM EDT | Special Weather Statement | OKX | 59 min |
| Jun 6, 2:33 PM EDT | Special Weather Statement | OKX | 42 min |
| Jun 27, 12:34 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 28, 12:37 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Jun 28, 1:32 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 28, 6:47 PM EDT | Severe Thunderstorm Warning | OKX | 35 min |
| Jun 28, 7:20 PM EDT | Mesoscale Discussion | SPC | 55 min |
| Jun 29, 5:44 PM EDT | Special Weather Statement | OKX | 61 min |
| Jun 29, 5:49 PM EDT | Areal Flood Advisory | OKX | 48 min |
| Jun 30, 11:59 AM EDT | Areal Flood Advisory | OKX | 61 min |
| Jul 1, 6:10 PM EDT | Special Weather Statement | OKX | 65 min |
| Jul 2, 6:30 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 3, 5:01 PM EDT | Special Weather Statement | OKX | 59 min |
| Jul 3, 7:26 PM EDT | Areal Flood Advisory | OKX | 94 min |
| Jul 6, 3:31 PM EDT | Severe Thunderstorm Warning | OKX | 44 min |
| Jul 6, 4:02 PM EDT | Flash Flood Warning | OKX | 115 min |
| Jul 6, 4:33 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Jul 6, 4:35 PM EDT | Areal Flood Advisory | OKX | 3 hr |
| Jul 6, 4:39 PM EDT | Severe Thunderstorm Warning | OKX | 66 min |
| Jul 6, 4:49 PM EDT | Flash Flood Warning | OKX | 62 min |
| Jul 8, 5:24 AM EDT | Heat Advisory | OKX | 35 hr |
| Jul 8, 4:37 PM EDT | Special Weather Statement | OKX | 38 min |
| Jul 9, 4:05 PM EDT | Flash Flood Watch | OKX | 29 hr |
| Jul 9, 5:39 PM EDT | Tropical Storm Warning | OKX | 32 hr |
| Jul 10, 1:11 PM EDT | Areal Flood Advisory | OKX | 3 hr |
| Jul 10, 1:30 PM EDT | Flash Flood Warning | OKX | 4 hr |
| Jul 11, 2:25 PM EDT | Areal Flood Advisory | OKX | 3 hr |
| Jul 11, 7:05 PM EDT | Special Weather Statement | OKX | 40 min |
| Jul 17, 3:41 PM EDT | Heat Advisory | OKX | 3 days |
| Jul 22, 1:45 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 22, 2:57 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 22, 3:27 PM EDT | Heat Advisory | OKX | 28 hr |
| Jul 22, 6:01 PM EDT | Special Weather Statement | OKX | 44 min |
| Jul 22, 6:30 PM EDT | Severe Thunderstorm Warning | OKX | 45 min |
| Jul 22, 6:55 PM EDT | Areal Flood Advisory | OKX | 95 min |
| Jul 22, 7:01 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Jul 22, 7:17 PM EDT | Special Weather Statement | OKX | 43 min |
| Jul 23, 2:49 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 23, 4:28 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 23, 6:48 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Jul 25, 2:57 PM EDT | Heat Advisory | OKX | 3 days |
| Jul 30, 1:20 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Jul 31, 1:25 AM EDT | Special Weather Statement | OKX | 35 min |
| Aug 2, 3:32 PM EDT | Flash Flood Watch | OKX | 48 hr |
| Aug 2, 6:00 PM EDT | Tropical Storm Watch | OKX | 17 hr |
| Aug 3, 5:20 AM EDT | Tropical Storm Warning | OKX | 39 hr |
| Aug 3, 4:43 PM EDT | Coastal Flood Advisory | OKX | 33 hr |
| Aug 3, 8:51 PM EDT | Special Weather Statement | OKX | 39 min |
| Aug 3, 9:05 PM EDT | Special Weather Statement | OKX | 40 min |
| Aug 4, 6:45 AM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 4, 7:23 AM EDT | Tornado Watch | SPC | 9 hr |
| Aug 4, 11:13 AM EDT | Mesoscale Discussion | SPC | 92 min |
| Aug 4, 11:51 AM EDT | Areal Flood Advisory | OKX | 3 hr |
| Aug 9, 3:52 PM EDT | Heat Advisory | OKX | 3 days |
| Aug 12, 2:59 PM EDT | Special Weather Statement | OKX | 46 min |
| Aug 12, 3:14 PM EDT | Flash Flood Warning | OKX | 113 min |
| Aug 12, 3:51 PM EDT | Severe Thunderstorm Warning | OKX | 39 min |
| Aug 12, 3:59 PM EDT | Areal Flood Advisory | OKX | 92 min |
| Aug 13, 10:20 AM EDT | Areal Flood Advisory | OKX | 95 min |
| Aug 13, 11:41 AM EDT | Areal Flood Advisory | OKX | 105 min |
| Aug 22, 2:24 PM EDT | Areal Flood Advisory | OKX | 66 min |
| Aug 22, 2:34 PM EDT | Special Weather Statement | OKX | 26 min |
| Aug 25, 3:12 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 25, 4:01 PM EDT | Special Weather Statement | OKX | 44 min |
| Aug 25, 6:00 PM EDT | Severe Thunderstorm Warning | OKX | 45 min |
| Aug 25, 6:11 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 27, 6:35 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Aug 27, 7:27 PM EDT | Special Weather Statement | OKX | 48 min |
| Aug 27, 7:34 PM EDT | Severe Thunderstorm Warning | OKX | 41 min |
| Aug 27, 8:14 PM EDT | Severe Thunderstorm Warning | OKX | 31 min |
| Aug 29, 6:45 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 10, 6:19 AM EDT | Areal Flood Advisory | OKX | 116 min |
| Sep 10, 9:16 PM EDT | Areal Flood Advisory | OKX | 89 min |
| Sep 30, 2:59 AM EDT | Areal Flood Advisory | OKX | 4 hr |
| Sep 30, 3:36 AM EDT | Special Weather Statement | OKX | 54 min |
| Oct 6, 3:15 PM EDT | Wind Advisory | OKX | 31 hr |
| Oct 21, 12:25 AM EDT | Dense Fog Advisory | OKX | 9 hr |
| Nov 1, 3:05 PM EST | Wind Advisory | OKX | 26 hr |
| Nov 15, 3:33 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Nov 15, 7:01 PM EST | Mesoscale Discussion | SPC | 59 min |
| Nov 15, 7:32 PM EST | Severe Thunderstorm Watch | SPC | 5 hr |
| Nov 15, 7:57 PM EST | Severe Thunderstorm Warning | OKX | 63 min |
| Nov 15, 8:36 PM EST | Tornado Warning | OKX | 24 min |
| Nov 15, 8:41 PM EST | Severe Thunderstorm Warning | OKX | 64 min |
| Nov 16, 3:46 PM EST | Freeze Watch | OKX | 23 hr |
| Nov 17, 2:40 PM EST | Freeze Warning | OKX | 17 hr |
| Nov 30, 10:54 AM EST | Wind Advisory | OKX | 11 hr |
| Nov 30, 4:37 PM EST | Mesoscale Discussion | SPC | 53 min |
| Nov 30, 5:41 PM EST | Special Weather Statement | OKX | 49 min |
| Nov 30, 6:48 PM EST | Special Weather Statement | OKX | 87 min |
| Dec 14, 4:00 PM EST | Winter Storm Watch | OKX | 36 hr |
| Dec 15, 3:40 PM EST | Winter Storm Warning | OKX | 45 hr |
| Dec 15, 3:41 PM EST | Coastal Flood Advisory | OKX | 37 hr |
| Dec 16, 5:31 PM EST | Special Weather Statement | OKX | 74 min |
| Dec 16, 6:48 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Dec 22, 3:49 PM EST | High Wind Watch | OKX | 23 hr |
| Dec 23, 2:43 PM EST | Flood Watch | OKX | 43 hr |
| Dec 23, 2:55 PM EST | High Wind Warning | OKX | 41 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 | 11 |
| Tornado Warning | 2 |
| Severe Thunderstorm Watch | 7 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 22 |
| Special Weather Statement | 32 |
| Flooding | |
| Flash Flood Warning | 4 |
| Flash Flood Watch | 2 |
| Flood Watch | 1 |
| Areal Flood Advisory | 16 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 1 |
| Heat | |
| Heat Advisory | 5 |
| Cold | |
| Freeze Warning | 1 |
| Freeze Watch | 1 |
| Wind and dust | |
| High Wind Warning | 3 |
| High Wind Watch | 2 |
| Wind Advisory | 11 |
| Fog and smoke | |
| Dense Fog Advisory | 3 |
| Tropical | |
| Tropical Storm Warning | 2 |
| Tropical Storm Watch | 1 |
| Coast and beach | |
| Coastal Flood Advisory | 5 |
| Coastal Flood Statement | 8 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20192021
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.