Alert archive / Pennsylvania / Lawrence County
Weather alerts in Lawrence County, Pennsylvania, 2010
148 weather alerts in 2010, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Lawrence County and its neighbors
Each county as a circle sized by its count in 2010. Tap one for its archive.
- Alerts
- 148
- Warnings
- 30
- Watches
- 31
- Advisories
- 25
- Busiest month
- June36 alerts
- Busiest day
- July 24, 20108 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Lawrence County, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 21 | 15 | 29% | 11 | 82% | 22 min |
| Flash flood warnings | 2 | 1 | 50% | 0 |
Each office's whole area, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Pittsburgh, PA: tornado warnings | 13 | 1 | 92% | 4 | 25% | 4 min |
| NWS Pittsburgh, PA: severe thunderstorm warnings | 204 | 124 | 39% | 290 | 82% | 26 min |
| NWS Pittsburgh, PA: flash flood warnings | 24 | 15 | 38% | 29 | 90% | 73 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 1, 2:11 PM EST | Winter Weather Advisory | PBZ | 5 days |
| Jan 6, 8:56 AM EST | Winter Weather Advisory | PBZ | 3 hr |
| Jan 6, 3:27 PM EST | Winter Weather Advisory | PBZ | 67 hr |
| Jan 21, 2:31 PM EST | Winter Weather Advisory | PBZ | 22 hr |
| Jan 24, 4:34 AM EST | Flood Watch | PBZ | 38 hr |
| Jan 25, 7:44 AM EST | Areal Flood Advisory | PBZ | 6 hr |
| Feb 3, 3:00 PM EST | Winter Storm Watch | PBZ | 24 hr |
| Feb 4, 2:31 PM EST | Winter Storm Warning | PBZ | 50 hr |
| Feb 7, 3:04 PM EST | Winter Storm Watch | PBZ | 24 hr |
| Feb 8, 3:19 PM EST | Winter Storm Warning | PBZ | 54 hr |
| Feb 14, 4:52 PM EST | Winter Weather Advisory | PBZ | 4 days |
| Feb 15, 1:41 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Feb 18, 12:05 PM EST | Winter Weather Advisory | PBZ | 4 hr |
| Feb 25, 2:54 AM EST | Winter Weather Advisory | PBZ | 50 hr |
| Mar 10, 4:19 AM EST | Flood Watch | PBZ | 4 days |
| Mar 13, 7:41 AM EST | River Flood Watch | PBZ | 7 hr |
| Mar 22, 6:53 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 3, 3:50 AM EDT | Fire Weather Watch | PBZ | 12 hr |
| Apr 3, 10:18 AM EDT | Red Flag Warning | PBZ | 10 hr |
| Apr 7, 10:01 AM EDT | Red Flag Warning | PBZ | 9 hr |
| Apr 16, 12:44 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 16, 1:28 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 16, 3:23 PM EDT | Severe Thunderstorm Warning | PBZ | 67 min |
| Apr 16, 4:34 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Apr 25, 10:56 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 25, 11:54 AM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 25, 2:26 PM EDT | Mesoscale Discussion | SPC | 94 min |
| May 7, 2:38 PM EDT | Wind Advisory | PBZ | 30 hr |
| May 7, 7:25 PM EDT | Mesoscale Discussion | SPC | 95 min |
| May 7, 9:17 PM EDT | Mesoscale Discussion | SPC | 58 min |
| May 7, 9:31 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 7, 11:29 PM EDT | Severe Thunderstorm Warning | PBZ | 46 min |
| May 8, 12:32 AM EDT | Severe Thunderstorm Warning | PBZ | 43 min |
| May 8, 3:04 PM EDT | Freeze Watch | PBZ | 12 hr |
| May 9, 3:22 AM EDT | Freeze Warning | PBZ | 29 hr |
| May 14, 1:48 AM EDT | Mesoscale Discussion | SPC | 87 min |
| May 14, 3:48 AM EDT | Mesoscale Discussion | SPC | 87 min |
| May 14, 4:14 AM EDT | Severe Thunderstorm Warning | PBZ | 61 min |
| May 14, 5:14 AM EDT | Severe Thunderstorm Warning | PBZ | 61 min |
| May 23, 2:11 AM EDT | Dense Fog Advisory | PBZ | 7 hr |
| May 28, 4:50 PM EDT | Special Weather Statement | PBZ | 25 min |
| May 28, 5:17 PM EDT | Special Weather Statement | PBZ | 43 min |
| May 31, 3:20 PM EDT | Flash Flood Watch | PBZ | 12 hr |
| May 31, 8:47 PM EDT | Areal Flood Advisory | PBZ | 3 hr |
| Jun 2, 1:09 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Jun 2, 1:39 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 2, 4:14 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Jun 2, 7:41 PM EDT | Special Weather Statement | PBZ | 34 min |
| Jun 2, 7:52 PM EDT | Severe Thunderstorm Warning | PBZ | 38 min |
| Jun 2, 8:21 PM EDT | Special Weather Statement | PBZ | 39 min |
| Jun 2, 8:47 PM EDT | Special Weather Statement | PBZ | 58 min |
| Jun 2, 8:47 PM EDT | Severe Thunderstorm Warning | PBZ | 43 min |
| Jun 2, 11:54 PM EDT | Areal Flood Warning | PBZ | 6 hr |
| Jun 4, 1:14 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 4, 3:45 PM EDT | Mesoscale Discussion | SPC | 60 min |
| Jun 5, 3:15 AM EDT | Flash Flood Watch | PBZ | 32 hr |
| Jun 5, 1:35 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Jun 5, 2:08 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 5, 2:27 PM EDT | Severe Thunderstorm Warning | PBZ | 48 min |
| Jun 5, 3:13 PM EDT | Tornado Watch | SPC | 4 hr |
| Jun 6, 2:03 AM EDT | Tornado Watch | SPC | 7 hr |
| Jun 6, 3:38 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 6, 7:05 AM EDT | Mesoscale Discussion | SPC | 115 min |
| Jun 6, 7:51 AM EDT | Tornado Watch | SPC | 7 hr |
| Jun 16, 1:39 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jun 19, 3:59 PM EDT | Special Weather Statement | PBZ | 31 min |
| Jun 19, 6:04 PM EDT | Mesoscale Discussion | SPC | 56 min |
| Jun 22, 4:25 AM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 22, 6:49 AM EDT | Special Weather Statement | PBZ | 56 min |
| Jun 23, 11:52 AM EDT | Mesoscale Discussion | SPC | 53 min |
| Jun 23, 1:37 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 23, 3:13 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Jun 23, 4:46 PM EDT | Special Weather Statement | PBZ | 59 min |
| Jun 23, 5:29 PM EDT | Severe Thunderstorm Warning | PBZ | 61 min |
| Jun 27, 3:49 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jun 27, 4:19 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 27, 4:51 PM EDT | Special Weather Statement | PBZ | 54 min |
| Jun 27, 8:12 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Jun 28, 5:05 PM EDT | Special Weather Statement | PBZ | 55 min |
| Jul 17, 7:33 PM EDT | Severe Thunderstorm Warning | PBZ | 27 min |
| Jul 17, 7:41 PM EDT | Severe Thunderstorm Warning | PBZ | 34 min |
| Jul 17, 8:07 PM EDT | Flash Flood Warning | PBZ | 2 hr |
| Jul 17, 8:37 PM EDT | Severe Thunderstorm Warning | PBZ | 53 min |
| Jul 18, 7:29 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Jul 20, 2:20 PM EDT | Special Weather Statement | PBZ | 55 min |
| Jul 21, 2:45 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 23, 3:30 AM EDT | Heat Advisory | PBZ | 40 hr |
| Jul 23, 12:46 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 23, 6:12 PM EDT | Special Weather Statement | PBZ | 48 min |
| Jul 23, 7:00 PM EDT | Mesoscale Discussion | SPC | 60 min |
| Jul 23, 7:19 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 23, 10:34 PM EDT | Severe Thunderstorm Warning | PBZ | 56 min |
| Jul 23, 10:45 PM EDT | Mesoscale Discussion | SPC | 90 min |
| Jul 24, 12:07 AM EDT | Severe Thunderstorm Warning | PBZ | 53 min |
| Jul 24, 12:36 AM EDT | Areal Flood Advisory | PBZ | 3 hr |
| Jul 24, 5:34 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Jul 24, 6:10 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 24, 7:12 PM EDT | Severe Thunderstorm Warning | PBZ | 63 min |
| Jul 24, 7:56 PM EDT | Severe Thunderstorm Warning | PBZ | 64 min |
| Jul 24, 8:11 PM EDT | Severe Thunderstorm Warning | PBZ | 64 min |
| Jul 24, 9:01 PM EDT | Areal Flood Advisory | PBZ | 3 hr |
| Jul 24, 9:36 PM EDT | Mesoscale Discussion | SPC | 54 min |
| Aug 4, 3:22 PM EDT | Severe Thunderstorm Warning | PBZ | 53 min |
| Aug 4, 10:08 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 4, 11:52 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Aug 5, 7:38 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 11, 11:54 PM EDT | Special Weather Statement | PBZ | 66 min |
| Aug 12, 1:14 AM EDT | Special Weather Statement | PBZ | 61 min |
| Aug 12, 1:35 AM EDT | Areal Flood Advisory | PBZ | 6 hr |
| Aug 14, 1:15 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 14, 7:31 PM EDT | Areal Flood Advisory | PBZ | 3 hr |
| Aug 14, 8:10 PM EDT | Flash Flood Warning | PBZ | 4 hr |
| Sep 7, 8:30 PM EDT | Special Weather Statement | PBZ | 45 min |
| Sep 7, 8:34 PM EDT | Severe Thunderstorm Warning | PBZ | 26 min |
| Sep 16, 4:29 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Sep 16, 5:02 PM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Sep 16, 6:04 PM EDT | Mesoscale Discussion | SPC | 56 min |
| Sep 16, 6:33 PM EDT | Severe Thunderstorm Warning | PBZ | 42 min |
| Sep 22, 2:34 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Oct 11, 3:19 PM EDT | Mesoscale Discussion | SPC | 56 min |
| Oct 12, 3:04 AM EDT | Frost Advisory | PBZ | 30 hr |
| Oct 16, 6:34 PM EDT | Frost Advisory | PBZ | 8 hr |
| Oct 19, 2:17 PM EDT | Frost Advisory | PBZ | 19 hr |
| Oct 26, 3:40 AM EDT | Wind Advisory | PBZ | 15 hr |
| Oct 26, 1:09 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Oct 26, 1:36 PM EDT | Tornado Watch | SPC | 7 hr |
| Oct 26, 4:34 PM EDT | Severe Thunderstorm Warning | PBZ | 56 min |
| Oct 26, 5:45 PM EDT | Mesoscale Discussion | SPC | 90 min |
| Nov 17, 12:09 AM EST | Special Weather Statement | PBZ | 51 min |
| Nov 17, 1:10 AM EST | Special Weather Statement | PBZ | 110 min |
| Nov 29, 1:09 PM EST | Flood Watch | PBZ | 39 hr |
| Nov 29, 1:09 PM EST | Wind Advisory | PBZ | 32 hr |
| Nov 30, 11:26 PM EST | Areal Flood Advisory | PBZ | 6 hr |
| Dec 1, 2:04 AM EST | Areal Flood Warning | PBZ | 11 hr |
| Dec 5, 3:14 AM EST | Winter Weather Advisory | PBZ | 64 hr |
| Dec 10, 2:34 PM EST | Winter Storm Watch | PBZ | 38 hr |
| Dec 12, 3:43 AM EST | Winter Weather Advisory | PBZ | 63 hr |
| Dec 13, 9:38 AM EST | Special Weather Statement | PBZ | 52 min |
| Dec 13, 10:30 AM EST | Special Weather Statement | PBZ | 45 min |
| Dec 13, 11:16 AM EST | Special Weather Statement | PBZ | 59 min |
| Dec 13, 7:11 PM EST | Special Weather Statement | PBZ | 109 min |
| Dec 13, 8:57 PM EST | Special Weather Statement | PBZ | 108 min |
| Dec 14, 8:33 AM EST | Special Weather Statement | PBZ | 57 min |
| Dec 14, 9:55 AM EST | Special Weather Statement | PBZ | 80 min |
| Dec 14, 11:01 AM EST | Special Weather Statement | PBZ | 89 min |
| Dec 14, 12:09 PM EST | Special Weather Statement | PBZ | 81 min |
| Dec 14, 1:04 PM EST | Special Weather Statement | PBZ | 86 min |
| Dec 29, 10:30 PM EST | Freezing Rain Advisory | PBZ | 13 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 | 21 |
| Severe Thunderstorm Watch | 16 |
| Tornado Watch | 4 |
| Mesoscale Discussion | 35 |
| Special Weather Statement | 27 |
| Flooding | |
| Areal Flood Warning | 2 |
| Flash Flood Warning | 2 |
| Flash Flood Watch | 2 |
| Flood Watch | 3 |
| River Flood Watch | 1 |
| Areal Flood Advisory | 7 |
| Winter | |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 3 |
| Freezing Rain Advisory | 1 |
| Winter Weather Advisory | 9 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Freeze Warning | 1 |
| Freeze Watch | 1 |
| Frost Advisory | 3 |
| Wind and dust | |
| Wind Advisory | 3 |
| Fire | |
| Red Flag Warning | 2 |
| Fire Weather Watch | 1 |
| 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 archive20092011
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.