Alert archive / Pennsylvania / Blair County
Weather alerts in Blair County, Pennsylvania, 2008
104 weather alerts in 2008, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Blair County and its neighbors
Each county as a circle sized by its count in 2008. Tap one for its archive.
- Alerts
- 104
- Warnings
- 24
- Watches
- 17
- Advisories
- 44
- Busiest month
- June22 alerts
- Busiest day
- June 16, 20084 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Blair County, 2008
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 16 | 10 | 38% | 8 | 100% | 22 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2008
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS State College, PA: tornado warnings | 5 | 0 | 100% | 2 | 0% | |
| NWS State College, PA: severe thunderstorm warnings | 184 | 86 | 53% | 179 | 84% | 26 min |
| NWS State College, PA: flash flood warnings | 4 | 3 | 25% | 13 | 31% | 88 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 8, 3:19 PM EST | Wind Advisory | CTP | 19 hr |
| Jan 9, 3:50 AM EST | Mesoscale Discussion | SPC | 115 min |
| Jan 17, 3:27 AM EST | Winter Weather Advisory | CTP | 24 hr |
| Jan 28, 2:01 PM EST | Freezing Rain Advisory | CTP | 20 hr |
| Jan 29, 10:36 AM EST | Wind Advisory | CTP | 29 hr |
| Jan 31, 2:17 PM EST | Winter Storm Warning | CTP | 29 hr |
| Feb 1, 7:36 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Feb 5, 3:45 AM EST | Flood Watch | CTP | 39 hr |
| Feb 6, 2:55 AM EST | Dense Fog Advisory | CTP | 5 hr |
| Feb 9, 4:06 AM EST | Wind Advisory | CTP | 42 hr |
| Feb 10, 3:45 AM EST | Wind Chill Advisory | CTP | 30 hr |
| Feb 11, 3:59 AM EST | Winter Storm Watch | CTP | 12 hr |
| Feb 11, 3:58 PM EST | Winter Weather Advisory | CTP | 44 hr |
| Feb 12, 1:06 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 12, 7:41 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 21, 3:21 AM EST | Winter Storm Watch | CTP | 11 hr |
| Feb 21, 2:45 PM EST | Winter Weather Advisory | CTP | 42 hr |
| Feb 22, 7:01 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 25, 3:15 PM EST | Winter Weather Advisory | CTP | 36 hr |
| Feb 29, 4:24 AM EST | Snow Advisory | CTP | 24 hr |
| Mar 3, 5:25 AM EST | Flood Watch | CTP | 54 hr |
| Mar 5, 1:01 AM EST | River Flood Warning | CTP | 16 hr |
| Mar 5, 1:01 AM EST | River Flood Warning | CTP | 15 hr |
| Mar 7, 3:34 AM EST | Flood Watch | CTP | 38 hr |
| Mar 8, 6:16 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Mar 8, 10:04 AM EST | Wind Advisory | CTP | 17 hr |
| Mar 19, 9:04 PM EDT | Wind Advisory | CTP | 16 hr |
| Mar 21, 3:45 AM EDT | Snow Advisory | CTP | 31 hr |
| Apr 19, 4:56 PM EDT | Red Flag Warning | CTP | 6 hr |
| Apr 20, 9:25 AM EDT | Flood Watch | CTP | 19 hr |
| Apr 26, 2:16 PM EDT | Mesoscale Discussion | SPC | 59 min |
| Apr 26, 5:03 PM EDT | Severe Thunderstorm Warning | CTP | 57 min |
| May 11, 4:17 AM EDT | Flood Watch | CTP | 32 hr |
| May 11, 3:23 PM EDT | High Wind Warning | CTP | 5 hr |
| May 28, 3:16 PM EDT | Frost Advisory | CTP | 17 hr |
| Jun 5, 2:34 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Jun 10, 2:54 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 16, 10:19 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 16, 11:28 AM EDT | Severe Thunderstorm Watch | SPC | 10 hr |
| Jun 16, 3:44 PM EDT | Severe Thunderstorm Warning | CTP | 61 min |
| Jun 16, 4:43 PM EDT | Severe Thunderstorm Warning | CTP | 62 min |
| Jun 22, 2:24 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 22, 6:48 PM EDT | Severe Thunderstorm Warning | CTP | 57 min |
| Jun 22, 11:42 PM EDT | Severe Thunderstorm Warning | CTP | 48 min |
| Jun 23, 11:10 AM EDT | Mesoscale Discussion | SPC | 95 min |
| Jun 26, 9:16 PM EDT | Severe Thunderstorm Warning | CTP | 44 min |
| Jun 26, 9:45 PM EDT | Severe Thunderstorm Warning | CTP | 60 min |
| Jun 28, 5:43 PM EDT | Severe Thunderstorm Warning | CTP | 32 min |
| Jun 28, 6:06 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Jun 28, 6:31 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 28, 7:32 PM EDT | Severe Thunderstorm Warning | CTP | 58 min |
| Jun 29, 2:04 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jun 29, 4:11 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 29, 4:14 PM EDT | Mesoscale Discussion | SPC | 91 min |
| 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 |
| Jul 5, 6:59 AM EDT | Areal Flood Advisory | CTP | 3 hr |
| Jul 5, 10:51 AM EDT | Areal Flood Advisory | CTP | 3 hr |
| Jul 7, 1:53 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Jul 20, 12:35 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 20, 4:04 PM EDT | Severe Thunderstorm Warning | CTP | 56 min |
| Jul 20, 4:28 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 20, 4:59 PM EDT | Severe Thunderstorm Warning | CTP | 76 min |
| Jul 23, 1:28 PM EDT | Mesoscale Discussion | SPC | 62 min |
| Jul 24, 1:45 PM EDT | Severe Thunderstorm Warning | CTP | 45 min |
| Jul 24, 1:56 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 24, 2:43 PM EDT | Severe Thunderstorm Warning | CTP | 47 min |
| Sep 9, 4:31 AM EDT | Severe Thunderstorm Warning | CTP | 44 min |
| Sep 9, 5:11 AM EDT | Severe Thunderstorm Warning | CTP | 64 min |
| Sep 9, 6:14 AM EDT | Severe Thunderstorm Warning | CTP | 46 min |
| Sep 14, 4:50 PM EDT | Wind Advisory | CTP | 11 hr |
| Sep 14, 8:18 PM EDT | High Wind Warning | CTP | 8 hr |
| Sep 30, 4:34 AM EDT | Dense Fog Advisory | CTP | 5 hr |
| Oct 5, 5:19 AM EDT | Dense Fog Advisory | CTP | 4 hr |
| Oct 6, 3:11 AM EDT | Frost Advisory | CTP | 29 hr |
| Oct 17, 3:48 AM EDT | Freeze Watch | CTP | 24 hr |
| Oct 17, 9:12 PM EDT | Frost Advisory | CTP | 12 hr |
| Oct 18, 3:24 AM EDT | Freeze Warning | CTP | 30 hr |
| Oct 28, 4:25 AM EDT | Wind Advisory | CTP | 23 hr |
| Nov 14, 1:17 AM EST | Dense Fog Advisory | CTP | 8 hr |
| Nov 24, 8:58 AM EST | Winter Weather Advisory | CTP | 19 hr |
| Nov 29, 2:52 PM EST | Winter Weather Advisory | CTP | 34 hr |
| Dec 9, 4:25 PM EST | Winter Storm Watch | CTP | 22 hr |
| Dec 10, 2:00 PM EST | Winter Weather Advisory | CTP | 44 hr |
| Dec 11, 12:04 AM EST | Mesoscale Discussion | SPC | 3 hr |
| Dec 11, 3:44 AM EST | Winter Storm Warning | CTP | 30 hr |
| Dec 15, 2:44 PM EST | Winter Storm Watch | CTP | 14 hr |
| Dec 16, 4:44 AM EST | Winter Weather Advisory | CTP | 31 hr |
| Dec 18, 4:04 PM EST | Winter Weather Advisory | CTP | 26 hr |
| Dec 19, 12:44 PM EST | Areal Flood Advisory | CTP | 3 hr |
| Dec 19, 4:54 PM EST | Areal Flood Advisory | CTP | 3 hr |
| Dec 20, 3:05 PM EST | Winter Weather Advisory | CTP | 24 hr |
| Dec 21, 2:41 PM EST | Wind Chill Advisory | CTP | 19 hr |
| Dec 21, 10:25 PM EST | Wind Advisory | CTP | 7 hr |
| Dec 23, 5:58 AM EST | Winter Weather Advisory | CTP | 29 hr |
| Dec 24, 3:15 PM EST | Areal Flood Advisory | CTP | 3 hr |
| Dec 24, 3:21 PM EST | Wind Advisory | CTP | 13 hr |
| Dec 24, 7:04 PM EST | Areal Flood Advisory | CTP | 6 hr |
| Dec 25, 2:15 AM EST | Areal Flood Advisory | CTP | 6 hr |
| Dec 26, 5:05 PM EST | Areal Flood Advisory | CTP | 3 hr |
| Dec 26, 8:05 PM EST | Areal Flood Advisory | CTP | 3 hr |
| Dec 27, 3:58 PM EST | Dense Fog Advisory | CTP | 16 hr |
| Dec 30, 2:26 PM EST | Wind Advisory | CTP | 35 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 | 7 |
| Mesoscale Discussion | 19 |
| Flooding | |
| River Flood Warning | 2 |
| Flood Watch | 5 |
| Areal Flood Advisory | 10 |
| Winter | |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 4 |
| Freezing Rain Advisory | 1 |
| Snow Advisory | 2 |
| Winter Weather Advisory | 11 |
| Cold | |
| Freeze Warning | 1 |
| Freeze Watch | 1 |
| Frost Advisory | 3 |
| Wind Chill Advisory | 2 |
| Wind and dust | |
| High Wind Warning | 2 |
| Wind Advisory | 10 |
| Fire | |
| Red Flag Warning | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 5 |
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.