Alert archive / Pennsylvania / Carbon County
Weather alerts in Carbon County, Pennsylvania, 2020
139 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Carbon County and its neighbors
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Alerts
- 139
- Warnings
- 30
- Watches
- 14
- Advisories
- 44
- Busiest month
- July33 alerts
- Busiest day
- July 6, 20207 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Carbon County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 14 | 11 | 21% | 9 | 89% | 28 min |
| Flash flood warnings | 1 | 0 | 100% | 0 |
Each office's whole area, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Philadelphia/Mount Holly: tornado warnings | 36 | 9 | 75% | 27 | 59% | 12 min |
| NWS Philadelphia/Mount Holly: severe thunderstorm warnings | 308 | 233 | 24% | 1,626 | 89% | 26 min |
| NWS Philadelphia/Mount Holly: flash flood warnings | 65 | 45 | 31% | 286 | 94% | 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, 8:33 AM EST | Dense Fog Advisory | PHI | 4 hr |
| Jan 8, 7:49 AM EST | Snow Squall Warning | PHI | 41 min |
| Jan 8, 1:48 PM EST | Snow Squall Warning | PHI | 42 min |
| Jan 8, 2:32 PM EST | Special Weather Statement | PHI | 28 min |
| Jan 11, 1:12 PM EST | Wind Advisory | PHI | 24 hr |
| Jan 12, 4:38 AM EST | Special Weather Statement | PHI | 37 min |
| Jan 12, 5:12 AM EST | Special Weather Statement | PHI | 48 min |
| Jan 15, 1:18 PM EST | Wind Advisory | PHI | 30 hr |
| Jan 16, 1:39 PM EST | Special Weather Statement | PHI | 21 min |
| Jan 17, 3:37 AM EST | Winter Weather Advisory | PHI | 41 hr |
| Jan 24, 3:16 AM EST | Winter Weather Advisory | PHI | 33 hr |
| Feb 4, 2:54 PM EST | Winter Weather Advisory | PHI | 43 hr |
| Feb 6, 2:55 PM EST | Wind Advisory | PHI | 27 hr |
| Feb 7, 4:00 AM EST | Winter Weather Advisory | PHI | 14 hr |
| Feb 12, 3:40 AM EST | Winter Weather Advisory | PHI | 26 hr |
| Feb 27, 9:10 AM EST | Wind Advisory | PHI | 9 hr |
| Feb 29, 10:21 AM EST | Snow Squall Warning | PHI | 39 min |
| Feb 29, 11:05 AM EST | Snow Squall Warning | PHI | 55 min |
| Mar 3, 6:50 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Mar 3, 8:09 PM EST | Special Weather Statement | PHI | 51 min |
| Mar 3, 8:39 PM EST | Severe Thunderstorm Warning | PHI | 51 min |
| Mar 3, 10:52 PM EST | Mesoscale Discussion | SPC | 113 min |
| Mar 22, 3:16 AM EDT | Winter Weather Advisory | PHI | 40 hr |
| Apr 8, 1:53 AM EDT | Special Weather Statement | PHI | 37 min |
| Apr 8, 7:19 PM EDT | Wind Advisory | PHI | 24 hr |
| Apr 9, 12:05 PM EDT | Special Weather Statement | PHI | 40 min |
| Apr 9, 3:32 PM EDT | Wind Advisory | PHI | 27 hr |
| Apr 12, 12:25 PM EDT | Wind Advisory | PHI | 29 hr |
| Apr 13, 11:33 AM EDT | Tornado Watch | SPC | 5 hr |
| Apr 13, 1:01 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Apr 13, 1:07 PM EDT | Flash Flood Warning | PHI | 4 hr |
| Apr 13, 1:20 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Apr 25, 3:20 AM EDT | Dense Fog Advisory | PHI | 3 hr |
| Apr 29, 3:14 AM EDT | Flood Watch | PHI | 48 hr |
| Apr 30, 8:22 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| May 7, 3:46 PM EDT | Freeze Warning | PHI | 41 hr |
| May 9, 3:46 AM EDT | Freeze Warning | PHI | 29 hr |
| May 11, 3:24 AM EDT | Freeze Warning | PHI | 27 hr |
| May 12, 9:22 AM EDT | Freeze Warning | PHI | 23 hr |
| May 13, 2:20 PM EDT | Freeze Warning | PHI | 18 hr |
| May 29, 12:27 PM EDT | Mesoscale Discussion | SPC | 63 min |
| May 29, 2:25 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 29, 3:03 PM EDT | Mesoscale Discussion | SPC | 87 min |
| May 29, 3:38 PM EDT | Special Weather Statement | PHI | 82 min |
| May 29, 4:18 PM EDT | Areal Flood Advisory | PHI | 2 hr |
| May 29, 8:01 PM EDT | Mesoscale Discussion | SPC | 119 min |
| May 29, 10:52 PM EDT | Special Weather Statement | PHI | 38 min |
| Jun 3, 8:32 AM EDT | Mesoscale Discussion | SPC | 118 min |
| Jun 3, 10:08 AM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 3, 11:04 AM EDT | Severe Thunderstorm Warning | PHI | 41 min |
| Jun 3, 11:34 AM EDT | Mesoscale Discussion | SPC | 86 min |
| Jun 4, 10:46 PM EDT | Areal Flood Advisory | PHI | 119 min |
| Jun 10, 9:28 PM EDT | Special Weather Statement | PHI | 47 min |
| Jun 10, 10:04 PM EDT | Special Weather Statement | PHI | 41 min |
| Jun 10, 10:22 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jun 11, 5:04 AM EDT | Areal Flood Advisory | PHI | 3 hr |
| Jun 19, 6:46 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Jun 21, 4:14 AM EDT | Dense Fog Advisory | PHI | 5 hr |
| Jun 23, 10:12 PM EDT | Special Weather Statement | PHI | 48 min |
| Jun 24, 12:53 AM EDT | Areal Flood Advisory | PHI | 89 min |
| Jun 27, 12:34 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 28, 3:20 PM EDT | Severe Thunderstorm Warning | PHI | 40 min |
| Jul 3, 5:40 PM EDT | Special Weather Statement | PHI | 35 min |
| Jul 3, 6:09 PM EDT | Special Weather Statement | PHI | 36 min |
| Jul 6, 1:38 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jul 6, 3:56 PM EDT | Severe Thunderstorm Warning | PHI | 64 min |
| Jul 6, 4:00 PM EDT | Special Weather Statement | CTP | 30 min |
| Jul 6, 4:33 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Jul 6, 4:51 PM EDT | Areal Flood Advisory | PHI | 114 min |
| Jul 6, 5:00 PM EDT | Severe Thunderstorm Warning | PHI | 45 min |
| Jul 6, 5:01 PM EDT | Areal Flood Advisory | PHI | 119 min |
| Jul 8, 11:26 AM EDT | Special Weather Statement | PHI | 49 min |
| Jul 8, 12:13 PM EDT | Flash Flood Watch | PHI | 6 hr |
| Jul 8, 12:29 PM EDT | Special Weather Statement | PHI | 61 min |
| Jul 9, 3:00 PM EDT | Flash Flood Watch | PHI | 30 hr |
| Jul 10, 3:12 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jul 10, 9:29 PM EDT | Areal Flood Advisory | PHI | 9 min |
| Jul 10, 9:36 PM EDT | Areal Flood Warning | PHI | 8 hr |
| Jul 11, 2:06 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Jul 12, 7:28 PM EDT | Special Weather Statement | PHI | 32 min |
| Jul 12, 7:31 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jul 12, 8:01 PM EDT | Special Weather Statement | PHI | 29 min |
| Jul 19, 5:52 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Jul 22, 1:36 PM EDT | Special Weather Statement | PHI | 24 min |
| Jul 22, 1:45 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 22, 2:57 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 22, 4:10 PM EDT | Severe Thunderstorm Warning | PHI | 65 min |
| Jul 22, 4:49 PM EDT | Severe Thunderstorm Warning | PHI | 56 min |
| Jul 22, 4:55 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jul 23, 2:43 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jul 23, 2:49 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 23, 4:28 PM EDT | Special Weather Statement | CTP | 32 min |
| Jul 23, 4:28 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 23, 6:48 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Jul 30, 1:20 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Aug 2, 7:49 AM EDT | Areal Flood Advisory | PHI | 84 min |
| Aug 2, 2:00 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 2, 3:33 PM EDT | Flash Flood Watch | PHI | 48 hr |
| Aug 2, 5:14 PM EDT | Special Weather Statement | PHI | 31 min |
| Aug 4, 11:13 AM EDT | Areal Flood Advisory | PHI | 4 hr |
| Aug 4, 8:22 PM EDT | Areal Flood Warning | PHI | 9 hr |
| Aug 7, 10:34 AM EDT | Severe Thunderstorm Warning | PHI | 56 min |
| Aug 7, 11:28 AM EDT | Special Weather Statement | PHI | 47 min |
| Aug 7, 3:46 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Aug 17, 11:59 PM EDT | Severe Thunderstorm Warning | PHI | 46 min |
| Aug 24, 12:44 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 24, 1:15 PM EDT | Severe Thunderstorm Warning | PHI | 21 min |
| Aug 24, 4:05 PM EDT | Areal Flood Advisory | PHI | 2 hr |
| Aug 24, 4:38 PM EDT | Severe Thunderstorm Warning | PHI | 37 min |
| Aug 24, 5:01 PM EDT | Special Weather Statement | PHI | 29 min |
| Aug 25, 3:34 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 25, 6:11 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 27, 7:51 PM EDT | Severe Thunderstorm Warning | PHI | 39 min |
| Aug 29, 3:56 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 29, 5:34 PM EDT | Special Weather Statement | PHI | 56 min |
| Aug 29, 6:08 PM EDT | Special Weather Statement | PHI | 67 min |
| Aug 29, 6:26 PM EDT | Severe Thunderstorm Warning | PHI | 64 min |
| Sep 19, 2:46 PM EDT | Frost Advisory | PHI | 17 hr |
| Sep 20, 3:16 PM EDT | Frost Advisory | PHI | 15 hr |
| Sep 25, 8:01 AM EDT | Dense Fog Advisory | PHI | 119 min |
| Sep 29, 9:24 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Sep 29, 10:17 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Oct 22, 12:25 AM EDT | Dense Fog Advisory | PHI | 9 hr |
| Nov 1, 3:10 AM EST | Wind Advisory | PHI | 36 hr |
| Nov 15, 3:33 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Nov 15, 5:35 PM EST | Severe Thunderstorm Watch | SPC | 5 hr |
| Nov 15, 5:57 PM EST | Severe Thunderstorm Warning | PHI | 78 min |
| Nov 15, 6:52 PM EST | Mesoscale Discussion | SPC | 113 min |
| Nov 30, 3:26 PM EST | Areal Flood Warning | PHI | 4 hr |
| Dec 12, 6:19 PM EST | Dense Fog Advisory | PHI | 7 hr |
| Dec 13, 7:15 PM EST | Winter Storm Watch | PHI | 44 hr |
| Dec 15, 3:18 AM EST | Winter Storm Warning | PHI | 51 hr |
| Dec 16, 1:57 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Dec 16, 6:48 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Dec 22, 3:22 PM EST | Flood Watch | PHI | 66 hr |
| Dec 23, 3:23 PM EST | Wind Advisory | PHI | 38 hr |
| Dec 24, 10:09 PM EST | Areal Flood Advisory | PHI | 6 hr |
| Dec 25, 4:31 AM EST | Areal Flood Warning | PHI | 7 hr |
| Dec 25, 12:13 PM EST | Areal Flood Warning | PHI | 9 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 | 14 |
| Severe Thunderstorm Watch | 7 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 25 |
| Special Weather Statement | 26 |
| Flooding | |
| Areal Flood Warning | 5 |
| Flash Flood Warning | 1 |
| Flash Flood Watch | 3 |
| Flood Watch | 2 |
| Areal Flood Advisory | 21 |
| Winter | |
| Snow Squall Warning | 4 |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 6 |
| Cold | |
| Freeze Warning | 5 |
| Frost Advisory | 2 |
| Wind and dust | |
| Wind Advisory | 9 |
| Fog and smoke | |
| Dense Fog Advisory | 6 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20192021
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.