Alert archive / Pennsylvania / Clearfield County
Weather alerts in Clearfield County, Pennsylvania, 2018
140 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Clearfield County and its neighbors
Each county as a circle sized by its count in 2018. Tap one for its archive.
- Alerts
- 140
- Warnings
- 24
- Watches
- 18
- Advisories
- 43
- Busiest month
- May20 alerts
- Busiest day
- October 2, 201813 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
1 of 3 tornado warnings covering Clearfield County in 2018 had a tornado report inside them.
Clearfield County, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 3 | 1 | 67% | 0 | ||
| Severe thunderstorm warnings | 10 | 8 | 20% | 5 | 80% | 28 min |
| Flash flood warnings | 1 | 1 | 0% | 4 | 100% | 110 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 3, 3:29 AM EST | Wind Chill Watch | CTP | 24 hr |
| Jan 4, 3:46 AM EST | Wind Chill Warning | CTP | 62 hr |
| Jan 4, 3:46 AM EST | Wind Chill Advisory | CTP | 3 days |
| Jan 7, 2:38 PM EST | Winter Weather Advisory | CTP | 40 hr |
| Jan 10, 3:07 PM EST | Winter Storm Watch | CTP | 38 hr |
| 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, 4:58 PM EST | Areal Flood Advisory | CTP | 3 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 12, 8:24 PM EST | Areal Flood Advisory | CTP | 4 hr |
| Jan 13, 1:21 PM EST | Wind Chill Advisory | CTP | 21 hr |
| Jan 18, 9:03 AM EST | Special Weather Statement | CTP | 87 min |
| Jan 29, 4:32 AM EST | Winter Weather Advisory | CTP | 38 hr |
| Feb 1, 5:25 PM EST | Special Weather Statement | CTP | 50 min |
| Feb 1, 7:15 PM EST | Special Weather Statement | CTP | 90 min |
| Feb 3, 2:44 PM EST | Winter Weather Advisory | CTP | 42 hr |
| Feb 5, 2:40 PM EST | Winter Storm Watch | CTP | 24 hr |
| Feb 6, 3:57 AM EST | Winter Weather Advisory | CTP | 38 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 13, 10:50 PM EST | Special Weather Statement | CTP | 25 min |
| Feb 16, 1:27 AM EST | Areal Flood Warning | CTP | 6 hr |
| Feb 16, 1:43 AM EST | Areal Flood Advisory | CTP | 5 hr |
| Feb 16, 8:15 AM EST | Areal Flood Advisory | CTP | 3 hr |
| Feb 21, 2:14 PM EST | Winter Weather Advisory | CTP | 46 hr |
| Feb 22, 11:29 AM EST | Flood Watch | CTP | 68 hr |
| Feb 25, 4:28 AM EST | Areal Flood Advisory | CTP | 5 hr |
| Mar 1, 3:48 PM EST | Winter Weather Advisory | CTP | 23 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 8, 3:32 AM EST | Winter Weather Advisory | CTP | 39 hr |
| Mar 13, 5:17 PM EDT | Special Weather Statement | CTP | 58 min |
| Mar 15, 11:37 AM EDT | Special Weather Statement | CTP | 53 min |
| Mar 15, 12:26 PM EDT | Special Weather Statement | CTP | 49 min |
| Mar 16, 1:20 AM EDT | Special Weather Statement | CTP | 55 min |
| Mar 20, 4:36 AM EDT | Winter Weather Advisory | CTP | 39 hr |
| Mar 27, 5:00 AM EDT | Winter Weather Advisory | CTP | 12 hr |
| Mar 29, 2:28 AM EDT | Dense Fog Advisory | CTP | 8 hr |
| Mar 29, 8:43 PM EDT | Special Weather Statement | CTP | 17 min |
| Apr 1, 4:17 AM EDT | Winter Weather Advisory | CTP | 29 hr |
| Apr 3, 3:25 PM EDT | Wind Advisory | CTP | 12 hr |
| Apr 3, 6:38 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 4, 3:36 AM EDT | High Wind Warning | CTP | 16 hr |
| Apr 4, 1:37 PM EDT | Special Weather Statement | CTP | 53 min |
| Apr 5, 12:23 AM EDT | Special Weather Statement | CTP | 52 min |
| Apr 16, 1:45 PM EDT | Special Weather Statement | CTP | 45 min |
| Apr 17, 3:52 PM EDT | Special Weather Statement | CTP | 83 min |
| Apr 17, 5:12 PM EDT | Special Weather Statement | CTP | 63 min |
| Apr 27, 8:26 PM EDT | Severe Thunderstorm Warning | CTP | 34 min |
| May 2, 4:45 AM EDT | Red Flag Warning | CTP | 16 hr |
| May 3, 2:23 PM EDT | Special Weather Statement | CTP | 37 min |
| May 3, 4:57 PM EDT | Special Weather Statement | CTP | 33 min |
| May 4, 2:23 PM EDT | Mesoscale Discussion | SPC | 97 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, 5:22 PM EDT | Severe Thunderstorm Warning | CTP | 83 min |
| May 4, 6:49 PM EDT | Special Weather Statement | CTP | 26 min |
| May 7, 1:15 AM EDT | Dense Fog Advisory | CTP | 8 hr |
| May 10, 2:24 PM EDT | Special Weather Statement | CTP | 81 min |
| May 15, 11:43 AM EDT | Mesoscale Discussion | SPC | 3 hr |
| May 15, 12:00 PM EDT | Severe Thunderstorm Warning | CTP | 75 min |
| May 15, 12:26 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 15, 12:58 PM EDT | Severe Thunderstorm Warning | CTP | 57 min |
| May 15, 1:42 PM EDT | Severe Thunderstorm Warning | CTP | 63 min |
| May 28, 2:16 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 28, 4:40 PM EDT | Special Weather Statement | CTP | 35 min |
| May 31, 12:51 PM EDT | Special Weather Statement | CTP | 54 min |
| May 31, 2:10 PM EDT | Areal Flood Advisory | CTP | 110 min |
| May 31, 3:57 PM EDT | Areal Flood Advisory | CTP | 108 min |
| Jun 5, 3:05 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 13, 6:10 PM EDT | Mesoscale Discussion | SPC | 95 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 18, 4:12 PM EDT | Special Weather Statement | CTP | 33 min |
| Jun 18, 10:19 PM EDT | Severe Thunderstorm Warning | CTP | 71 min |
| Jun 24, 2:51 PM EDT | Special Weather Statement | CTP | 54 min |
| Jun 27, 7:37 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 27, 8:16 PM EDT | Special Weather Statement | CTP | 74 min |
| 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, 1:23 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Jul 5, 4:17 AM EDT | Flash Flood Watch | CTP | 30 hr |
| Jul 30, 4:10 PM EDT | Areal Flood Advisory | CTP | 110 min |
| Aug 1, 4:06 AM EDT | Flash Flood Watch | CTP | 3 days |
| Aug 4, 2:59 AM EDT | Dense Fog Advisory | CTP | 6 hr |
| Aug 11, 11:34 PM EDT | Areal Flood Advisory | CTP | 56 min |
| Aug 13, 5:19 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Aug 16, 5:21 PM EDT | Special Weather Statement | CTP | 39 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 27, 9:44 AM EDT | Special Weather Statement | CTP | 76 min |
| Sep 3, 5:49 PM EDT | Special Weather Statement | CTP | 41 min |
| Sep 6, 11:55 AM EDT | Special Weather Statement | CTP | 35 min |
| Sep 6, 1:20 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 8, 3:33 AM EDT | Flood Watch | CTP | 64 hr |
| Sep 10, 2:41 AM EDT | Areal Flood Warning | CTP | 9 hr |
| Sep 10, 10:19 AM EDT | Areal Flood Warning | CTP | 9 hr |
| Sep 10, 9:19 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Sep 11, 12:13 AM EDT | Areal Flood Advisory | CTP | 3 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 21, 4:50 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Sep 21, 6:30 PM EDT | Severe Thunderstorm Warning | CTP | 60 min |
| Sep 21, 7:04 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Sep 21, 8:37 PM EDT | Special Weather Statement | CTP | 38 min |
| 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, 4:26 PM EDT | Severe Thunderstorm Warning | CTP | 64 min |
| Oct 2, 4:42 PM EDT | Tornado Warning | CTP | 63 min |
| Oct 2, 4:43 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 2, 5:02 PM EDT | Tornado Warning | CTP | 43 min |
| Oct 2, 5:27 PM EDT | Severe Thunderstorm Warning | CTP | 93 min |
| Oct 2, 5:32 PM EDT | Tornado Warning | CTP | 58 min |
| Oct 2, 6:19 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Oct 2, 7:00 PM EDT | Severe Thunderstorm Warning | CTP | 90 min |
| Oct 2, 7:24 PM EDT | Mesoscale Discussion | SPC | 81 min |
| Oct 2, 7:59 PM EDT | Flash Flood Warning | CTP | 3 hr |
| Oct 2, 10:57 PM EDT | Areal Flood Warning | CTP | 6 hr |
| Oct 8, 3:30 AM EDT | Dense Fog Advisory | CTP | 7 hr |
| Oct 13, 1:13 PM EDT | Frost Advisory | CTP | 19 hr |
| Nov 2, 3:12 AM EDT | Special Weather Statement | CTP | 33 min |
| Nov 2, 3:46 AM EDT | Special Weather Statement | CTP | 29 min |
| Nov 10, 5:37 AM EST | Special Weather Statement | CTP | 113 min |
| Nov 10, 8:33 AM EST | Snow Squall Warning | CTP | 42 min |
| Nov 14, 4:31 AM EST | Winter Storm Watch | CTP | 11 hr |
| 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 16, 8:47 PM EST | Winter Weather Advisory | CTP | 11 hr |
| Nov 21, 3:23 PM EST | Special Weather Statement | CTP | 112 min |
| Nov 23, 11:02 AM EST | Winter Weather Advisory | CTP | 27 hr |
| Nov 24, 10:08 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Nov 29, 1:26 PM EST | Winter Weather Advisory | CTP | 24 hr |
| Dec 2, 7:37 PM EST | Dense Fog Advisory | CTP | 8 hr |
| Dec 3, 1:09 AM EST | Dense Fog Advisory | CTP | 3 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.