Alert archive / Pennsylvania / Indiana County
Weather alerts in Indiana County, Pennsylvania, 2018
100 weather alerts in 2018, 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 2018. Tap one for its archive.
- Alerts
- 100
- Warnings
- 35
- Watches
- 11
- Advisories
- 10
- Busiest month
- May21 alerts
- Busiest day
- May 12, 20186 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
0 of 3 tornado warnings covering Indiana County in 2018 had a tornado report inside them.
Indiana County, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 3 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 17 | 12 | 29% | 8 | 88% | 18 min |
| Flash flood warnings | 3 | 3 | 0% | 4 | 75% | 147 min |
Each office's whole area, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Pittsburgh, PA: tornado warnings | 21 | 4 | 81% | 14 | 43% | 12 min |
| NWS Pittsburgh, PA: severe thunderstorm warnings | 207 | 154 | 26% | 416 | 80% | 19 min |
| NWS Pittsburgh, PA: flash flood warnings | 79 | 54 | 32% | 204 | 84% | 62 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 12, 1:03 AM EST | Areal Flood Advisory | PBZ | 8 hr |
| Jan 12, 2:38 AM EST | Areal Flood Warning | PBZ | 12 hr |
| Jan 12, 2:30 PM EST | Areal Flood Warning | PBZ | 3 hr |
| Jan 12, 5:21 PM EST | Areal Flood Warning | PBZ | 18 hr |
| Jan 12, 7:04 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 15, 7:59 PM EST | Special Weather Statement | PBZ | 61 min |
| Jan 23, 2:59 AM EST | Special Weather Statement | PBZ | 61 min |
| Feb 2, 12:01 PM EST | Special Weather Statement | PBZ | 74 min |
| Feb 7, 5:28 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Feb 12, 4:28 AM EST | Special Weather Statement | PBZ | 77 min |
| Feb 12, 5:32 AM EST | Special Weather Statement | PBZ | 73 min |
| Feb 15, 8:34 PM EST | Areal Flood Warning | PBZ | 17 hr |
| Feb 16, 4:28 AM EST | River Flood Warning | PBZ | 26 hr |
| Feb 16, 2:17 PM EST | Areal Flood Advisory | PBZ | 18 hr |
| Feb 22, 7:29 AM EST | Areal Flood Warning | PBZ | 9 hr |
| Feb 22, 11:50 AM EST | River Flood Watch | PBZ | 48 hr |
| Mar 7, 6:45 AM EST | Special Weather Statement | PBZ | 2 hr |
| Mar 15, 11:18 AM EDT | Special Weather Statement | PBZ | 42 min |
| Mar 16, 5:42 AM EDT | Special Weather Statement | PBZ | 33 min |
| Mar 29, 8:34 PM EDT | Special Weather Statement | PBZ | 26 min |
| Apr 3, 6:38 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 3, 8:33 PM EDT | Severe Thunderstorm Warning | PBZ | 27 min |
| Apr 13, 10:53 AM EDT | River Flood Watch | PBZ | 47 hr |
| May 3, 4:47 PM EDT | Severe Thunderstorm Warning | PBZ | 28 min |
| May 4, 2:44 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 4, 4:20 PM EDT | Mesoscale Discussion | SPC | 55 min |
| May 4, 5:51 PM EDT | Severe Thunderstorm Warning | PBZ | 54 min |
| May 10, 1:54 PM EDT | Special Weather Statement | PBZ | 51 min |
| May 10, 3:03 PM EDT | Severe Thunderstorm Warning | PBZ | 27 min |
| May 12, 12:07 AM EDT | Special Weather Statement | PBZ | 23 min |
| May 12, 1:51 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 12, 2:47 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 12, 3:29 PM EDT | Severe Thunderstorm Warning | PBZ | 46 min |
| May 12, 4:13 PM EDT | Severe Thunderstorm Warning | PBZ | 32 min |
| May 12, 5:05 PM EDT | Mesoscale Discussion | SPC | 115 min |
| May 13, 8:39 AM EDT | Special Weather Statement | PBZ | 36 min |
| May 14, 11:56 AM EDT | Mesoscale Discussion | SPC | 64 min |
| May 14, 12:29 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| May 15, 11:43 AM EDT | Mesoscale Discussion | SPC | 3 hr |
| May 15, 12:26 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 15, 12:45 PM EDT | Severe Thunderstorm Warning | PBZ | 45 min |
| May 15, 1:20 PM EDT | Severe Thunderstorm Warning | PBZ | 14 min |
| May 19, 6:48 PM EDT | Severe Thunderstorm Warning | PBZ | 27 min |
| May 19, 7:20 PM EDT | Areal Flood Advisory | PBZ | 3 hr |
| Jun 5, 3:05 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 5, 4:12 PM EDT | Special Weather Statement | PBZ | 33 min |
| Jun 5, 4:46 PM EDT | Special Weather Statement | PBZ | 29 min |
| Jun 5, 4:57 PM EDT | Severe Thunderstorm Warning | PBZ | 33 min |
| Jun 13, 6:10 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jun 13, 6:12 PM EDT | Tornado Warning | PBZ | 33 min |
| Jun 13, 6:33 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 13, 6:53 PM EDT | Severe Thunderstorm Warning | PBZ | 52 min |
| Jun 13, 7:06 PM EDT | Tornado Warning | PBZ | 24 min |
| Jun 13, 7:27 PM EDT | Tornado Warning | PBZ | 22 min |
| Jun 13, 8:43 PM EDT | Mesoscale Discussion | SPC | 62 min |
| Jun 18, 3:45 PM EDT | Severe Thunderstorm Warning | PBZ | 45 min |
| Jun 18, 4:29 PM EDT | Severe Thunderstorm Warning | PBZ | 16 min |
| Jun 20, 10:58 PM EDT | Areal Flood Advisory | PBZ | 3 hr |
| Jun 21, 4:00 AM EDT | Areal Flood Warning | PBZ | 3 hr |
| Jun 27, 7:37 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 27, 9:30 PM EDT | Areal Flood Advisory | PBZ | 3 hr |
| Jul 2, 3:49 PM EDT | Severe Thunderstorm Warning | PBZ | 26 min |
| Jul 5, 2:55 AM EDT | Areal Flood Advisory | PBZ | 3 hr |
| Jul 5, 4:18 AM EDT | Areal Flood Advisory | PBZ | 3 hr |
| Jul 5, 5:32 AM EDT | Areal Flood Advisory | PBZ | 3 hr |
| Jul 5, 3:58 PM EDT | Special Weather Statement | PBZ | 47 min |
| Jul 15, 5:02 AM EDT | Special Weather Statement | PBZ | 58 min |
| Jul 15, 5:54 AM EDT | Special Weather Statement | PBZ | 36 min |
| Jul 27, 1:57 PM EDT | Special Weather Statement | PBZ | 33 min |
| Jul 27, 2:21 PM EDT | Special Weather Statement | PBZ | 24 min |
| Jul 27, 2:31 PM EDT | Severe Thunderstorm Warning | PBZ | 29 min |
| Jul 27, 4:49 PM EDT | Special Weather Statement | PBZ | 26 min |
| Jul 30, 11:58 AM EDT | Areal Flood Advisory | PBZ | 23 min |
| Jul 30, 12:20 PM EDT | Flash Flood Warning | PBZ | 3 hr |
| Jul 30, 1:56 PM EDT | Flash Flood Warning | PBZ | 3 hr |
| Aug 13, 2:05 PM EDT | Areal Flood Advisory | PBZ | 115 min |
| Aug 16, 5:07 PM EDT | Special Weather Statement | PBZ | 38 min |
| Aug 21, 1:52 PM EDT | Severe Thunderstorm Warning | PBZ | 38 min |
| Aug 21, 2:16 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Aug 21, 2:41 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 21, 4:56 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 21, 7:13 PM EDT | Flash Flood Warning | PBZ | 3 hr |
| Aug 29, 8:10 PM EDT | Special Weather Statement | PBZ | 35 min |
| Sep 1, 2:13 PM EDT | Special Weather Statement | PBZ | 32 min |
| Sep 6, 1:20 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 8, 11:25 AM EDT | River Flood Watch | PBZ | 36 hr |
| Sep 9, 3:00 PM EDT | Areal Flood Warning | PBZ | 18 hr |
| Sep 9, 3:05 PM EDT | River Flood Warning | PBZ | 40 hr |
| Sep 9, 4:15 PM EDT | Areal Flood Warning | PBZ | 18 hr |
| Sep 10, 11:02 AM EDT | Areal Flood Warning | PBZ | 6 hr |
| Sep 10, 4:57 PM EDT | Areal Flood Warning | PBZ | 18 hr |
| Sep 21, 4:32 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Sep 21, 7:04 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Sep 21, 7:58 PM EDT | Severe Thunderstorm Warning | PBZ | 47 min |
| Sep 21, 8:42 PM EDT | Special Weather Statement | PBZ | 33 min |
| Oct 2, 2:26 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 2, 2:55 PM EDT | Tornado Watch | SPC | 8 hr |
| Oct 2, 4:43 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 2, 7:24 PM EDT | Mesoscale Discussion | SPC | 81 min |
| Nov 15, 9:56 AM EST | Mesoscale Discussion | SPC | 6 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 archive20172019
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.