Alert archive / Pennsylvania / Indiana County
Weather alerts in Indiana County, Pennsylvania, 2017
100 weather alerts in 2017, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Indiana County and its neighbors
Each county as a circle sized by its count in 2017. Tap one for its archive.
- Alerts
- 100
- Warnings
- 38
- Watches
- 8
- Advisories
- 8
- Busiest month
- August24 alerts
- Busiest day
- August 19, 20178 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Indiana County, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 28 | 26 | 7% | 14 | 93% | 23 min |
| Flash flood warnings | 7 | 6 | 14% | 16 | 100% | 94 min |
Each office's whole area, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Pittsburgh, PA: tornado warnings | 14 | 8 | 43% | 18 | 67% | 11 min |
| NWS Pittsburgh, PA: severe thunderstorm warnings | 225 | 186 | 17% | 518 | 88% | 21 min |
| NWS Pittsburgh, PA: flash flood warnings | 76 | 64 | 16% | 268 | 96% | 112 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, 2:21 PM EST | Special Weather Statement | PBZ | 39 min |
| Jan 12, 2:22 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Jan 12, 3:20 PM EST | Special Weather Statement | PBZ | 70 min |
| Jan 29, 6:54 AM EST | Special Weather Statement | PBZ | 81 min |
| Jan 30, 12:06 PM EST | Special Weather Statement | PBZ | 114 min |
| Feb 8, 9:40 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 12, 7:02 PM EST | Severe Thunderstorm Warning | PBZ | 58 min |
| Feb 12, 7:59 PM EST | Severe Thunderstorm Warning | PBZ | 61 min |
| Feb 12, 10:20 PM EST | Special Weather Statement | PBZ | 40 min |
| Feb 12, 11:43 PM EST | Special Weather Statement | PBZ | 62 min |
| Mar 1, 2:19 AM EST | Mesoscale Discussion | SPC | 86 min |
| Mar 1, 11:36 AM EST | Areal Flood Advisory | PBZ | 3 hr |
| Mar 3, 2:26 AM EST | Special Weather Statement | PBZ | 2 hr |
| Mar 3, 11:11 AM EST | Special Weather Statement | PBZ | 79 min |
| Mar 3, 12:27 PM EST | Special Weather Statement | PBZ | 63 min |
| Apr 16, 2:15 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 16, 5:42 PM EDT | Severe Thunderstorm Warning | PBZ | 35 min |
| Apr 20, 2:40 PM EDT | Mesoscale Discussion | SPC | 65 min |
| Apr 20, 3:04 PM EDT | Severe Thunderstorm Warning | PBZ | 41 min |
| Apr 30, 2:58 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 1, 11:59 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 1, 12:32 PM EDT | Tornado Watch | SPC | 4 hr |
| May 1, 2:47 PM EDT | Severe Thunderstorm Warning | PBZ | 58 min |
| May 1, 3:34 PM EDT | Severe Thunderstorm Warning | PBZ | 56 min |
| May 18, 4:35 PM EDT | Mesoscale Discussion | SPC | 85 min |
| May 29, 3:08 AM EDT | Areal Flood Warning | PBZ | 9 hr |
| May 30, 12:03 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 30, 12:39 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 30, 1:25 PM EDT | Severe Thunderstorm Warning | PBZ | 50 min |
| May 30, 1:27 PM EDT | Severe Thunderstorm Warning | PBZ | 25 min |
| May 30, 2:17 PM EDT | Severe Thunderstorm Warning | PBZ | 31 min |
| May 31, 4:06 PM EDT | Severe Thunderstorm Warning | PBZ | 39 min |
| Jun 13, 4:42 PM EDT | Severe Thunderstorm Warning | PBZ | 48 min |
| Jun 15, 4:01 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Jun 15, 5:22 PM EDT | Severe Thunderstorm Warning | PBZ | 38 min |
| Jun 15, 5:50 PM EDT | Special Weather Statement | PBZ | 10 min |
| Jun 16, 3:17 PM EDT | Severe Thunderstorm Warning | PBZ | 28 min |
| Jun 16, 4:07 PM EDT | Areal Flood Advisory | PBZ | 3 hr |
| Jun 18, 12:31 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Jun 18, 1:37 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 19, 8:17 PM EDT | Special Weather Statement | PBZ | 58 min |
| Jun 21, 2:38 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 22, 1:18 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 22, 2:51 PM EDT | Special Weather Statement | PBZ | 24 min |
| Jun 22, 2:55 PM EDT | Severe Thunderstorm Warning | PBZ | 35 min |
| Jun 22, 3:49 PM EDT | Areal Flood Advisory | PBZ | 3 hr |
| Jun 22, 4:36 PM EDT | Areal Flood Advisory | PBZ | 3 hr |
| Jun 22, 4:53 PM EDT | Flash Flood Warning | PBZ | 10 hr |
| Jun 22, 5:52 PM EDT | Flash Flood Warning | PBZ | 9 hr |
| Jun 23, 2:59 AM EDT | Areal Flood Warning | PBZ | 24 hr |
| Jun 23, 2:20 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 23, 4:04 PM EDT | Flash Flood Warning | PBZ | 6 hr |
| Jun 30, 3:05 PM EDT | Special Weather Statement | PBZ | 25 min |
| Jul 1, 10:59 AM EDT | Special Weather Statement | PBZ | 46 min |
| Jul 14, 1:42 AM EDT | Areal Flood Advisory | PBZ | 3 hr |
| Jul 14, 2:30 AM EDT | Flash Flood Warning | PBZ | 3 hr |
| Jul 14, 2:52 AM EDT | Flash Flood Warning | PBZ | 6 hr |
| Jul 14, 10:38 AM EDT | Areal Flood Advisory | PBZ | 112 min |
| Jul 20, 3:50 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 20, 5:37 PM EDT | Special Weather Statement | PBZ | 23 min |
| Jul 24, 2:17 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Jul 28, 2:29 PM EDT | Flash Flood Warning | PBZ | 4 hr |
| Jul 28, 11:51 PM EDT | Flash Flood Warning | PBZ | 8 hr |
| Jul 29, 7:40 AM EDT | Areal Flood Warning | PBZ | 6 hr |
| Aug 4, 11:38 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 4, 1:25 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 4, 2:56 PM EDT | Severe Thunderstorm Warning | PBZ | 34 min |
| Aug 4, 3:46 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Aug 4, 4:00 PM EDT | Special Weather Statement | PBZ | 30 min |
| Aug 4, 7:41 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 19, 2:13 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 19, 2:45 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 19, 4:36 PM EDT | Severe Thunderstorm Warning | PBZ | 39 min |
| Aug 19, 4:43 PM EDT | Severe Thunderstorm Warning | PBZ | 32 min |
| Aug 19, 4:43 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 19, 4:46 PM EDT | Severe Thunderstorm Warning | PBZ | 44 min |
| Aug 19, 5:04 PM EDT | Severe Thunderstorm Warning | PBZ | 28 min |
| Aug 19, 5:34 PM EDT | Severe Thunderstorm Warning | PBZ | 24 min |
| Aug 21, 3:14 PM EDT | Special Weather Statement | PBZ | 31 min |
| Aug 21, 3:30 PM EDT | Severe Thunderstorm Warning | PBZ | 33 min |
| Aug 22, 11:54 AM EDT | Mesoscale Discussion | SPC | 66 min |
| Aug 22, 12:39 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 22, 2:02 PM EDT | Severe Thunderstorm Warning | PBZ | 43 min |
| Aug 22, 2:36 PM EDT | Severe Thunderstorm Warning | PBZ | 39 min |
| Aug 22, 2:37 PM EDT | Severe Thunderstorm Warning | PBZ | 38 min |
| Aug 22, 2:44 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Aug 22, 3:54 PM EDT | Severe Thunderstorm Warning | PBZ | 36 min |
| Aug 22, 4:39 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Sep 13, 11:48 PM EDT | Areal Flood Advisory | PBZ | 3 hr |
| Oct 15, 3:03 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Nov 5, 5:28 PM EST | Severe Thunderstorm Watch | SPC | 5 hr |
| Nov 5, 7:06 PM EST | Mesoscale Discussion | SPC | 84 min |
| Nov 5, 7:37 PM EST | Severe Thunderstorm Warning | PBZ | 53 min |
| Nov 5, 8:13 PM EST | Severe Thunderstorm Warning | PBZ | 47 min |
| Nov 5, 8:25 PM EST | Severe Thunderstorm Warning | PBZ | 38 min |
| Nov 6, 5:04 AM EST | Areal Flood Advisory | PBZ | 3 hr |
| Nov 19, 12:19 AM EST | Special Weather Statement | PBZ | 56 min |
| Dec 12, 7:29 AM EST | Special Weather Statement | PBZ | 61 min |
| Dec 25, 1:16 AM EST | Special Weather Statement | PBZ | 59 min |
| Dec 30, 5:14 PM EST | Special Weather Statement | PBZ | 31 min |
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 | 28 |
| Severe Thunderstorm Watch | 7 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 25 |
| Special Weather Statement | 21 |
| Flooding | |
| Areal Flood Warning | 3 |
| Flash Flood Warning | 7 |
| Areal Flood Advisory | 8 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20162018
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.