Alert archive / New Jersey / Hunterdon County
Weather alerts in Hunterdon County, New Jersey, 2008
126 weather alerts in 2008, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Hunterdon County and its neighbors
Each county as a circle sized by its count in 2008. Tap one for its archive.
- Alerts
- 126
- Warnings
- 32
- Watches
- 26
- Advisories
- 31
- Busiest month
- June23 alerts
- Busiest day
- March 8, 20085 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Hunterdon County, 2008
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 15 | 12 | 20% | 7 | 86% | 23 min |
| Flash flood warnings | 3 | 3 | 0% | 2 | 50% | 129 min |
Each office's whole area, 2008
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Philadelphia/Mount Holly: tornado warnings | 9 | 0 | 100% | 1 | 0% | |
| NWS Philadelphia/Mount Holly: severe thunderstorm warnings | 273 | 120 | 56% | 264 | 79% | 26 min |
| NWS Philadelphia/Mount Holly: flash flood warnings | 37 | 13 | 65% | 21 | 71% | 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 9, 3:34 AM EST | Wind Advisory | PHI | 10 hr |
| Jan 13, 4:57 AM EST | Heavy Snow Warning | PHI | 21 hr |
| Jan 13, 4:57 AM EST | Winter Storm Watch | PHI | 6 hr |
| Jan 17, 10:35 AM EST | Winter Weather Advisory | PHI | 22 hr |
| Jan 17, 12:53 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 29, 7:29 AM EST | Freezing Rain Advisory | PHI | 3 hr |
| Jan 29, 3:20 PM EST | Wind Advisory | PHI | 24 hr |
| Jan 31, 3:27 PM EST | Winter Weather Advisory | PHI | 23 hr |
| Feb 5, 5:04 AM EST | Dense Fog Advisory | PHI | 6 hr |
| Feb 5, 3:32 PM EST | Flood Watch | PHI | 31 hr |
| Feb 9, 3:49 PM EST | Wind Advisory | PHI | 35 hr |
| Feb 11, 3:30 AM EST | Winter Storm Watch | PHI | 24 hr |
| Feb 12, 3:17 AM EST | Winter Storm Warning | PHI | 32 hr |
| Feb 12, 1:06 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 12, 3:28 PM EST | Flood Watch | PHI | 29 hr |
| Feb 12, 4:15 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 12, 7:41 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 13, 3:24 PM EST | River Flood Warning | PHI | 6 hr |
| Feb 21, 9:58 AM EST | Winter Storm Watch | PHI | 6 hr |
| Feb 21, 3:59 PM EST | Winter Storm Warning | PHI | 32 hr |
| Feb 22, 7:01 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 22, 11:38 PM EST | Winter Weather Advisory | PHI | 3 hr |
| Feb 29, 3:45 AM EST | Snow Advisory | PHI | 24 hr |
| Mar 3, 2:17 PM EST | Flood Watch | PHI | 44 hr |
| Mar 5, 2:32 AM EST | Mesoscale Discussion | SPC | 88 min |
| Mar 5, 3:01 AM EST | Severe Thunderstorm Watch | SPC | 3 hr |
| Mar 6, 3:22 PM EST | Flood Watch | PHI | 51 hr |
| Mar 8, 4:40 AM EST | Wind Advisory | PHI | 27 hr |
| Mar 8, 12:36 PM EST | Flash Flood Warning | PHI | 5 hr |
| Mar 8, 3:58 PM EST | High Wind Warning | PHI | 6 hr |
| Mar 8, 4:28 PM EST | River Flood Warning | PHI | 17 hr |
| Mar 8, 6:03 PM EST | Severe Thunderstorm Warning | PHI | 57 min |
| Mar 8, 9:33 PM EST | River Flood Warning | PHI | 13 hr |
| Mar 20, 2:59 AM EDT | Wind Advisory | PHI | 36 hr |
| Apr 1, 9:02 PM EDT | Severe Thunderstorm Warning | PHI | 37 min |
| Apr 15, 3:15 PM EDT | Freeze Warning | PHI | 17 hr |
| Apr 29, 2:58 PM EDT | Frost Advisory | PHI | 17 hr |
| Apr 30, 3:15 PM EDT | Frost Advisory | PHI | 17 hr |
| May 8, 2:47 PM EDT | Flood Watch | PHI | 19 hr |
| May 27, 12:24 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 27, 2:45 PM EDT | Mesoscale Discussion | SPC | 90 min |
| May 27, 7:14 PM EDT | Mesoscale Discussion | SPC | 61 min |
| May 31, 10:25 AM EDT | Tornado Watch | SPC | 7 hr |
| Jun 5, 4:34 AM EDT | Excessive Heat Watch | PHI | 71 hr |
| Jun 6, 3:59 PM EDT | Heat Advisory | PHI | 4 days |
| Jun 8, 11:56 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 8, 2:40 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jun 10, 4:52 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Jun 10, 5:47 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 10, 6:51 PM EDT | Mesoscale Discussion | SPC | 54 min |
| Jun 10, 8:11 PM EDT | Severe Thunderstorm Warning | PHI | 64 min |
| Jun 14, 8:35 PM EDT | Severe Thunderstorm Warning | PHI | 55 min |
| Jun 16, 10:19 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 16, 12:54 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 16, 1:21 PM EDT | Severe Thunderstorm Watch | SPC | 10 hr |
| Jun 16, 5:53 PM EDT | Severe Thunderstorm Warning | PHI | 37 min |
| Jun 16, 6:18 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jun 23, 3:30 AM EDT | Mesoscale Discussion | SPC | 90 min |
| Jun 27, 11:37 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 29, 12:53 PM EDT | Mesoscale Discussion | SPC | 67 min |
| Jun 29, 4:11 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 29, 7:13 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Jun 29, 8:09 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 29, 9:30 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 29, 11:58 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Jun 30, 12:15 AM EDT | Mesoscale Discussion | SPC | 90 min |
| Jul 1, 12:19 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 17, 11:38 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 22, 2:15 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 23, 3:51 AM EDT | Flash Flood Watch | PHI | 25 hr |
| Jul 23, 2:34 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 23, 2:58 PM EDT | Severe Thunderstorm Warning | PHI | 47 min |
| Jul 23, 3:26 PM EDT | Severe Thunderstorm Warning | PHI | 64 min |
| Jul 23, 5:03 PM EDT | Severe Thunderstorm Warning | PHI | 57 min |
| Jul 23, 8:49 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Jul 23, 9:26 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Jul 27, 11:03 AM EDT | Mesoscale Discussion | SPC | 57 min |
| Jul 27, 11:26 AM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 27, 1:44 PM EDT | Severe Thunderstorm Warning | PHI | 61 min |
| Jul 27, 2:11 PM EDT | Severe Thunderstorm Warning | PHI | 64 min |
| Jul 27, 2:30 PM EDT | Areal Flood Advisory | PHI | 2 hr |
| Jul 28, 3:54 AM EDT | Dense Fog Advisory | PHI | 5 hr |
| Aug 2, 10:11 AM EDT | Mesoscale Discussion | SPC | 94 min |
| Aug 2, 10:39 AM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Aug 2, 11:31 AM EDT | Severe Thunderstorm Warning | PHI | 59 min |
| Aug 2, 12:06 PM EDT | Severe Thunderstorm Warning | PHI | 54 min |
| Aug 2, 6:35 PM EDT | Severe Thunderstorm Warning | PHI | 26 min |
| Aug 10, 10:27 AM EDT | Mesoscale Discussion | SPC | 33 min |
| Aug 10, 10:46 AM EDT | Severe Thunderstorm Watch | SPC | 10 hr |
| Aug 10, 1:05 PM EDT | Severe Thunderstorm Warning | PHI | 115 min |
| Aug 10, 1:05 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Aug 11, 10:56 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 15, 2:47 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Sep 4, 3:00 PM EDT | Flood Watch | PHI | 57 hr |
| Sep 5, 12:44 PM EDT | Inland Tropical Storm Warning | PHI | 34 hr |
| Sep 6, 5:47 PM EDT | Areal Flood Warning | PHI | 5 hr |
| Sep 9, 8:35 AM EDT | Mesoscale Discussion | SPC | 115 min |
| Sep 9, 9:21 AM EDT | Severe Thunderstorm Warning | PHI | 39 min |
| Sep 9, 9:33 AM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Sep 9, 9:41 AM EDT | Flash Flood Warning | PHI | 3 hr |
| Sep 9, 10:04 AM EDT | Flash Flood Warning | PHI | 3 hr |
| Oct 7, 3:55 PM EDT | Frost Advisory | PHI | 13 hr |
| Oct 18, 3:25 AM EDT | Frost Advisory | PHI | 30 hr |
| Oct 19, 3:04 AM EDT | Freeze Warning | PHI | 30 hr |
| Oct 27, 2:45 PM EDT | Wind Advisory | PHI | 36 hr |
| Oct 28, 1:40 PM EDT | Mesoscale Discussion | SPC | 4 hr |
| Nov 14, 1:28 AM EST | Dense Fog Advisory | PHI | 8 hr |
| Nov 15, 1:47 PM EST | Mesoscale Discussion | SPC | 58 min |
| Nov 15, 2:56 PM EST | Tornado Watch | SPC | 6 hr |
| Nov 15, 6:15 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Dec 7, 2:57 AM EST | Wind Advisory | PHI | 18 hr |
| Dec 10, 3:28 PM EST | Flood Watch | PHI | 42 hr |
| Dec 11, 10:41 PM EST | Areal Flood Advisory | PHI | 6 hr |
| Dec 11, 11:20 PM EST | Areal Flood Warning | PHI | 14 hr |
| Dec 12, 8:34 AM EST | Areal Flood Advisory | PHI | 3 hr |
| Dec 16, 5:30 AM EST | Winter Weather Advisory | PHI | 32 hr |
| Dec 16, 11:55 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Dec 17, 2:49 PM EST | Winter Storm Watch | PHI | 25 hr |
| Dec 18, 3:41 PM EST | Winter Storm Warning | PHI | 28 hr |
| Dec 20, 2:44 PM EST | Winter Weather Advisory | PHI | 22 hr |
| Dec 21, 2:08 PM EST | Wind Advisory | PHI | 23 hr |
| Dec 23, 1:49 PM EST | Winter Weather Advisory | PHI | 22 hr |
| Dec 27, 3:32 PM EST | Dense Fog Advisory | PHI | 15 hr |
| Dec 30, 3:50 AM EST | Wind Advisory | PHI | 8 hr |
| Dec 31, 5:01 AM EST | High Wind Warning | PHI | 14 hr |
| Dec 31, 3:27 PM EST | Wind Advisory | PHI | 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 archive20072009
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.