Alert archive / Pennsylvania / Montour County
Weather alerts in Montour County, Pennsylvania, 2018
141 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Montour County and its neighbors
Each county as a circle sized by its count in 2018. Tap one for its archive.
- Alerts
- 141
- Warnings
- 32
- Watches
- 21
- Advisories
- 48
- Busiest month
- August26 alerts
- Busiest day
- July 24, 20189 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 4 tornado warnings covering Montour County in 2018 had a tornado report inside them.
Montour County, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 4 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 7 | 6 | 14% | 4 | 100% | 34 min |
| Flash flood warnings | 6 | 3 | 50% | 1 | 100% | 100 min |
Each office's whole area, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS State College, PA: tornado warnings | 22 | 5 | 77% | 10 | 50% | 7 min |
| NWS State College, PA: severe thunderstorm warnings | 122 | 81 | 34% | 244 | 80% | 30 min |
| NWS State College, PA: flash flood warnings | 57 | 36 | 37% | 89 | 88% | 96 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 4, 3:46 AM EST | Wind Chill Advisory | CTP | 3 days |
| Jan 11, 4:34 AM EST | Flood Watch | CTP | 51 hr |
| Jan 12, 4:46 AM EST | Winter Weather Advisory | CTP | 29 hr |
| Jan 12, 7:04 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 12, 7:24 PM EST | Areal Flood Advisory | CTP | 3 hr |
| Jan 13, 12:56 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 15, 2:22 PM EST | Winter Weather Advisory | CTP | 41 hr |
| Feb 3, 2:44 PM EST | Winter Weather Advisory | CTP | 42 hr |
| Feb 4, 6:32 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 5, 2:40 PM EST | Winter Storm Watch | CTP | 24 hr |
| Feb 6, 2:41 PM EST | Winter Storm Warning | CTP | 27 hr |
| Feb 7, 5:28 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Feb 7, 11:25 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 11, 12:01 AM EST | Dense Fog Advisory | CTP | 10 hr |
| Feb 11, 6:40 PM EST | Dense Fog Advisory | CTP | 5 hr |
| Feb 16, 7:14 PM EST | Winter Weather Advisory | CTP | 33 hr |
| Feb 20, 12:33 AM EST | Dense Fog Advisory | CTP | 9 hr |
| Feb 22, 11:29 AM EST | Flood Watch | CTP | 68 hr |
| Feb 24, 4:12 AM EST | Dense Fog Advisory | CTP | 6 hr |
| Mar 1, 4:03 PM EST | Wind Advisory | CTP | 33 hr |
| Mar 6, 4:21 PM EST | Winter Weather Advisory | CTP | 22 hr |
| Mar 20, 4:36 AM EDT | Winter Weather Advisory | CTP | 39 hr |
| Mar 29, 2:28 AM EDT | Dense Fog Advisory | CTP | 8 hr |
| Apr 1, 4:17 AM EDT | Winter Weather Advisory | CTP | 29 hr |
| Apr 2, 3:47 AM EDT | Mesoscale Discussion | SPC | 6 hr |
| Apr 3, 3:25 PM EDT | Wind Advisory | CTP | 12 hr |
| Apr 4, 3:36 AM EDT | High Wind Warning | CTP | 16 hr |
| Apr 20, 4:27 AM EDT | Freeze Watch | CTP | 10 hr |
| Apr 20, 2:38 PM EDT | Freeze Warning | CTP | 17 hr |
| May 2, 4:45 AM EDT | Red Flag Warning | CTP | 16 hr |
| May 3, 3:46 PM EDT | Special Weather Statement | CTP | 44 min |
| May 3, 4:27 PM EDT | Severe Thunderstorm Warning | CTP | 33 min |
| May 4, 6:20 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| May 4, 8:12 PM EDT | Special Weather Statement | CTP | 78 min |
| May 4, 8:23 PM EDT | Mesoscale Discussion | SPC | 67 min |
| May 4, 8:50 PM EDT | Mesoscale Discussion | SPC | 85 min |
| May 7, 1:15 AM EDT | Dense Fog Advisory | CTP | 8 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, 2:14 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 15, 2:16 PM EDT | Severe Thunderstorm Warning | CTP | 74 min |
| May 15, 2:45 PM EDT | Tornado Warning | CTP | 24 min |
| May 15, 2:48 PM EDT | Tornado Warning | CTP | 42 min |
| Jun 13, 6:33 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 13, 8:43 PM EDT | Mesoscale Discussion | SPC | 62 min |
| Jun 17, 2:14 PM EDT | Heat Advisory | CTP | 30 hr |
| Jun 18, 1:32 PM EDT | Special Weather Statement | CTP | 58 min |
| Jun 18, 1:51 PM EDT | Severe Thunderstorm Warning | CTP | 54 min |
| Jun 18, 2:45 PM EDT | Areal Flood Advisory | CTP | 2 hr |
| Jun 27, 11:32 PM EDT | Special Weather Statement | CTP | 43 min |
| Jun 29, 2:28 PM EDT | Heat Advisory | CTP | 4 days |
| Jul 2, 1:03 PM EDT | Mesoscale Discussion | SPC | 72 min |
| Jul 4, 9:54 AM EDT | Flash Flood Watch | CTP | 10 hr |
| Jul 4, 2:30 PM EDT | Special Weather Statement | CTP | 30 min |
| Jul 5, 4:17 AM EDT | Flash Flood Watch | CTP | 30 hr |
| Jul 21, 4:40 AM EDT | Flash Flood Watch | CTP | 23 hr |
| Jul 23, 3:59 AM EDT | Flash Flood Watch | CTP | 4 days |
| Jul 23, 4:48 AM EDT | Areal Flood Advisory | CTP | 3 hr |
| Jul 23, 5:44 AM EDT | Flash Flood Warning | CTP | 3 hr |
| Jul 23, 8:06 AM EDT | Areal Flood Warning | CTP | 6 hr |
| Jul 23, 2:40 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 23, 10:39 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Jul 23, 11:30 PM EDT | Flash Flood Warning | CTP | 4 hr |
| Jul 23, 11:34 PM EDT | Flash Flood Warning | CTP | 4 hr |
| Jul 24, 2:56 AM EDT | Areal Flood Warning | CTP | 6 hr |
| Jul 24, 5:50 AM EDT | Areal Flood Advisory | CTP | 3 hr |
| Jul 24, 9:06 AM EDT | Areal Flood Warning | CTP | 9 hr |
| Jul 24, 4:25 PM EDT | Areal Flood Advisory | CTP | 2 hr |
| Jul 24, 5:20 PM EDT | Areal Flood Advisory | CTP | 115 min |
| Jul 24, 5:58 PM EDT | Areal Flood Warning | CTP | 48 hr |
| Jul 25, 1:35 AM EDT | Flash Flood Warning | CTP | 5 hr |
| Jul 25, 10:20 AM EDT | River Flood Warning | CTP | 61 hr |
| Jul 25, 5:27 PM EDT | Flash Flood Warning | CTP | 4 hr |
| Aug 1, 4:06 AM EDT | Flash Flood Watch | CTP | 3 days |
| Aug 1, 3:08 PM EDT | Special Weather Statement | CTP | 52 min |
| Aug 1, 3:15 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 3, 3:19 AM EDT | Areal Flood Advisory | CTP | 3 hr |
| Aug 3, 6:26 AM EDT | Areal Flood Advisory | CTP | 3 hr |
| Aug 3, 5:05 PM EDT | Areal Flood Advisory | CTP | 115 min |
| Aug 7, 1:47 PM EDT | Special Weather Statement | CTP | 43 min |
| Aug 7, 1:52 PM EDT | Severe Thunderstorm Warning | CTP | 53 min |
| Aug 7, 2:34 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Aug 7, 2:43 PM EDT | Severe Thunderstorm Warning | CTP | 77 min |
| Aug 8, 3:41 PM EDT | Special Weather Statement | CTP | 49 min |
| Aug 8, 4:56 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Aug 11, 5:47 AM EDT | Areal Flood Advisory | CTP | 118 min |
| Aug 11, 10:54 AM EDT | Flash Flood Watch | CTP | 8 hr |
| Aug 11, 12:14 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Aug 13, 1:46 AM EDT | Flash Flood Watch | CTP | 43 hr |
| Aug 13, 2:20 AM EDT | Areal Flood Advisory | CTP | 3 hr |
| Aug 13, 4:17 AM EDT | Flash Flood Warning | CTP | 9 hr |
| Aug 13, 12:51 PM EDT | Areal Flood Warning | CTP | 6 hr |
| Aug 13, 6:45 PM EDT | Areal Flood Warning | CTP | 12 hr |
| Aug 14, 9:47 AM EDT | River Flood Warning | CTP | 56 hr |
| Aug 14, 2:11 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Aug 17, 6:22 AM EDT | Special Weather Statement | CTP | 53 min |
| Aug 17, 2:42 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 17, 3:44 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 27, 4:25 AM EDT | Heat Advisory | CTP | 64 hr |
| Sep 3, 7:00 PM EDT | Severe Thunderstorm Warning | CTP | 45 min |
| Sep 3, 7:45 PM EDT | Special Weather Statement | CTP | 45 min |
| Sep 6, 1:20 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 6, 2:55 PM EDT | Special Weather Statement | CTP | 35 min |
| Sep 6, 3:15 PM EDT | Areal Flood Advisory | CTP | 2 hr |
| Sep 6, 3:31 PM EDT | Special Weather Statement | CTP | 44 min |
| Sep 6, 4:11 PM EDT | Areal Flood Advisory | CTP | 2 hr |
| Sep 8, 3:33 AM EDT | Flood Watch | CTP | 64 hr |
| Sep 10, 2:28 PM EDT | Areal Flood Advisory | CTP | 5 hr |
| Sep 16, 7:11 AM EDT | Dense Fog Advisory | CTP | 3 hr |
| Sep 17, 4:51 AM EDT | Flash Flood Watch | CTP | 31 hr |
| Sep 18, 5:41 AM EDT | Areal Flood Advisory | CTP | 3 hr |
| Sep 26, 2:48 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 26, 4:41 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Oct 2, 1:12 PM EDT | Flash Flood Watch | CTP | 9 hr |
| Oct 2, 2:26 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 2, 2:55 PM EDT | Tornado Watch | SPC | 8 hr |
| Oct 2, 3:48 PM EDT | Severe Thunderstorm Warning | CTP | 57 min |
| Oct 2, 3:51 PM EDT | Tornado Warning | CTP | 54 min |
| Oct 2, 4:26 PM EDT | Tornado Warning | CTP | 49 min |
| Oct 2, 4:43 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 2, 7:24 PM EDT | Mesoscale Discussion | SPC | 81 min |
| Oct 2, 8:10 PM EDT | Areal Flood Advisory | CTP | 2 hr |
| Oct 8, 4:53 AM EDT | Areal Flood Advisory | CTP | 3 hr |
| Oct 11, 10:07 AM EDT | Areal Flood Advisory | CTP | 3 hr |
| Oct 13, 1:13 PM EDT | Frost Advisory | CTP | 19 hr |
| Oct 17, 2:28 PM EDT | Freeze Watch | CTP | 13 hr |
| Oct 18, 3:14 AM EDT | Freeze Warning | CTP | 30 hr |
| Nov 2, 5:49 AM EDT | Special Weather Statement | CTP | 26 min |
| Nov 2, 6:19 AM EDT | Special Weather Statement | CTP | 26 min |
| Nov 2, 6:51 AM EDT | Special Weather Statement | CTP | 24 min |
| Nov 2, 8:40 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Nov 10, 8:05 AM EST | Snow Squall Warning | CTP | 55 min |
| Nov 14, 3:40 PM EST | Winter Storm Warning | CTP | 38 hr |
| Nov 15, 9:56 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Nov 15, 4:39 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Nov 15, 10:06 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Nov 16, 3:56 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Nov 23, 11:02 AM EST | Winter Weather Advisory | CTP | 27 hr |
| Nov 24, 10:08 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Dec 2, 7:37 PM EST | Dense Fog Advisory | CTP | 8 hr |
| Dec 19, 3:49 AM EST | Flood Watch | CTP | 69 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.