Alert archive / Pennsylvania / Bradford County
Weather alerts in Bradford County, Pennsylvania, 2009
100 weather alerts in 2009, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Bradford County and its neighbors
Each county as a circle sized by its count in 2009. Tap one for its archive.
- Alerts
- 100
- Warnings
- 27
- Watches
- 16
- Advisories
- 29
- Busiest month
- May18 alerts
- Busiest day
- May 16, 20098 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Bradford County, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 16 | 8 | 50% | 6 | 67% | 22 min |
| Flash flood warnings | 2 | 0 | 100% | 0 |
Each office's whole area, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Binghamton, NY: tornado warnings | 13 | 2 | 85% | 9 | 67% | 11 min |
| NWS Binghamton, NY: severe thunderstorm warnings | 183 | 79 | 57% | 164 | 85% | 26 min |
| NWS Binghamton, NY: flash flood warnings | 28 | 13 | 54% | 39 | 62% | 79 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 6, 3:07 AM EST | Winter Weather Advisory | BGM | 41 hr |
| Jan 7, 12:10 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 9, 2:38 AM EST | Winter Storm Watch | BGM | 13 hr |
| Jan 9, 4:07 PM EST | Winter Storm Warning | BGM | 36 hr |
| Jan 10, 12:56 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 14, 2:55 PM EST | Winter Weather Advisory | BGM | 12 hr |
| Jan 15, 3:41 AM EST | Wind Chill Advisory | BGM | 56 hr |
| Jan 26, 3:05 AM EST | Winter Storm Watch | BGM | 33 hr |
| Jan 27, 11:56 AM EST | Winter Storm Warning | BGM | 33 hr |
| Jan 28, 12:31 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Jan 28, 7:53 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Feb 11, 3:08 AM EST | Flood Watch | BGM | 55 hr |
| Feb 11, 3:07 PM EST | Wind Advisory | BGM | 31 hr |
| Feb 11, 8:00 PM EST | Mesoscale Discussion | SPC | 60 min |
| Feb 17, 2:55 PM EST | Winter Weather Advisory | BGM | 37 hr |
| Feb 18, 12:38 PM EST | Mesoscale Discussion | SPC | 3 hr |
| Mar 2, 2:46 PM EST | Wind Chill Advisory | BGM | 19 hr |
| Mar 7, 3:24 AM EST | Flood Watch | BGM | 4 days |
| Mar 9, 9:59 AM EDT | River Flood Warning | BGM | 71 hr |
| Mar 23, 3:05 AM EDT | Red Flag Warning | BGM | 17 hr |
| Mar 25, 12:16 PM EDT | Red Flag Warning | BGM | 8 hr |
| Apr 3, 2:58 PM EDT | Wind Advisory | BGM | 30 hr |
| Apr 28, 10:25 AM EDT | Red Flag Warning | BGM | 10 hr |
| May 10, 3:19 AM EDT | Frost Advisory | BGM | 29 hr |
| May 11, 11:39 AM EDT | Frost Advisory | BGM | 21 hr |
| May 12, 11:32 AM EDT | Frost Advisory | BGM | 21 hr |
| May 15, 2:36 AM EDT | Dense Fog Advisory | BGM | 6 hr |
| May 16, 12:05 PM EDT | Mesoscale Discussion | SPC | 55 min |
| May 16, 1:00 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 16, 3:55 PM EDT | Mesoscale Discussion | SPC | 65 min |
| May 16, 4:18 PM EDT | Severe Thunderstorm Warning | BGM | 42 min |
| May 16, 4:32 PM EDT | Severe Thunderstorm Warning | BGM | 58 min |
| May 16, 4:37 PM EDT | Severe Thunderstorm Warning | BGM | 53 min |
| May 16, 5:27 PM EDT | Severe Thunderstorm Warning | BGM | 48 min |
| May 16, 6:29 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 17, 4:00 AM EDT | Freeze Warning | BGM | 27 hr |
| May 18, 2:10 PM EDT | Freeze Warning | BGM | 18 hr |
| May 23, 12:49 PM EDT | Mesoscale Discussion | SPC | 56 min |
| May 24, 3:05 PM EDT | Severe Thunderstorm Warning | BGM | 55 min |
| May 30, 3:26 PM EDT | Freeze Watch | BGM | 12 hr |
| May 31, 3:18 AM EDT | Frost Advisory | BGM | 29 hr |
| Jun 9, 11:48 AM EDT | Mesoscale Discussion | SPC | 87 min |
| Jun 9, 1:31 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 9, 3:40 PM EDT | Mesoscale Discussion | SPC | 65 min |
| Jun 11, 3:16 PM EDT | Flash Flood Watch | BGM | 13 hr |
| Jun 20, 9:27 AM EDT | Areal Flood Advisory | BGM | 3 hr |
| Jun 20, 12:52 PM EDT | Areal Flood Advisory | BGM | 3 hr |
| Jun 25, 12:38 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 26, 12:32 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 26, 1:36 PM EDT | Severe Thunderstorm Warning | BGM | 54 min |
| Jun 26, 1:49 PM EDT | Severe Thunderstorm Warning | BGM | 56 min |
| Jun 26, 2:31 PM EDT | Severe Thunderstorm Warning | BGM | 44 min |
| Jun 26, 2:55 PM EDT | Severe Thunderstorm Warning | BGM | 65 min |
| Jun 26, 6:29 PM EDT | Mesoscale Discussion | SPC | 61 min |
| Jun 30, 5:02 PM EDT | Severe Thunderstorm Warning | BGM | 43 min |
| Jun 30, 6:36 PM EDT | Areal Flood Advisory | BGM | 114 min |
| Jul 1, 6:21 PM EDT | Areal Flood Advisory | BGM | 114 min |
| Jul 1, 6:37 PM EDT | Flash Flood Warning | BGM | 2 hr |
| Jul 2, 5:17 PM EDT | Areal Flood Advisory | BGM | 118 min |
| Jul 2, 6:10 PM EDT | Areal Flood Advisory | BGM | 110 min |
| Jul 2, 6:40 PM EDT | Flash Flood Warning | BGM | 3 hr |
| Jul 7, 12:09 PM EDT | Severe Thunderstorm Warning | BGM | 66 min |
| Jul 11, 10:31 AM EDT | Mesoscale Discussion | SPC | 59 min |
| Jul 11, 3:25 PM EDT | Severe Thunderstorm Warning | BGM | 65 min |
| Jul 11, 7:06 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Jul 21, 1:56 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Jul 24, 2:20 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Jul 25, 3:50 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 9, 11:36 AM EDT | Mesoscale Discussion | SPC | 24 min |
| Aug 9, 11:57 AM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 9, 2:45 PM EDT | Mesoscale Discussion | SPC | 60 min |
| Aug 9, 4:10 PM EDT | Severe Thunderstorm Warning | BGM | 53 min |
| Aug 9, 7:11 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 9, 10:44 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Aug 9, 10:47 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Aug 10, 3:13 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 10, 5:23 PM EDT | Severe Thunderstorm Warning | BGM | 52 min |
| Aug 10, 8:15 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 18, 2:32 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Aug 19, 1:21 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Aug 19, 2:19 PM EDT | Severe Thunderstorm Warning | BGM | 41 min |
| Sep 19, 3:59 AM EDT | Frost Advisory | BGM | 29 hr |
| Sep 23, 6:16 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Sep 28, 4:25 PM EDT | Severe Thunderstorm Warning | BGM | 65 min |
| Oct 1, 3:03 PM EDT | Frost Advisory | BGM | 18 hr |
| Oct 7, 2:28 AM EDT | Wind Advisory | BGM | 18 hr |
| Oct 10, 3:15 AM EDT | Frost Advisory | BGM | 29 hr |
| Oct 10, 3:18 PM EDT | Freeze Watch | BGM | 23 hr |
| Oct 11, 2:09 PM EDT | Freeze Warning | BGM | 18 hr |
| Oct 15, 4:20 AM EDT | Winter Storm Watch | BGM | 47 hr |
| Oct 15, 9:21 AM EDT | Winter Weather Advisory | BGM | 27 hr |
| Oct 24, 11:14 AM EDT | Areal Flood Advisory | BGM | 3 hr |
| Nov 27, 3:39 AM EST | Wind Advisory | BGM | 33 hr |
| Dec 8, 4:17 AM EST | Winter Weather Advisory | BGM | 30 hr |
| Dec 8, 11:32 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Dec 9, 10:35 AM EST | Wind Advisory | BGM | 41 hr |
| Dec 13, 5:16 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Dec 13, 9:21 AM EST | Freezing Rain Advisory | BGM | 6 hr |
| Dec 17, 5:37 AM EST | Special Weather Statement | CTP | 38 min |
| Dec 24, 4:07 PM EST | Winter Weather Advisory | BGM | 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 | 16 |
| Severe Thunderstorm Watch | 8 |
| Mesoscale Discussion | 27 |
| Special Weather Statement | 1 |
| Flooding | |
| Flash Flood Warning | 2 |
| River Flood Warning | 1 |
| Flash Flood Watch | 1 |
| Flood Watch | 2 |
| Areal Flood Advisory | 7 |
| Winter | |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 3 |
| Freezing Rain Advisory | 1 |
| Winter Weather Advisory | 6 |
| Cold | |
| Freeze Warning | 3 |
| Freeze Watch | 2 |
| Frost Advisory | 7 |
| Wind Chill Advisory | 2 |
| Wind and dust | |
| Wind Advisory | 5 |
| Fire | |
| Red Flag Warning | 3 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20082010
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.