Alert archive / Pennsylvania / Mercer County
Weather alerts in Mercer County, Pennsylvania, 2026
179 weather alerts in 2026, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Mercer County and its neighbors
Each county as a circle sized by its count in 2026. Tap one for its archive.
- Alerts
- 179
- Warnings
- 79
- Watches
- 28
- Advisories
- 22
- Busiest month
- September32 alerts
- Busiest day
- September 3, 202616 alerts
Over time
By month
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 |
|---|---|---|---|
| Dec 31, 10:14 PM EST | Snow Squall Warning | PBZ | 61 min |
| Dec 31, 11:01 PM EST | Snow Squall Warning | PBZ | 44 min |
| Jan 11, 7:53 AM EST | Snow Squall Warning | PBZ | 52 min |
| Jan 14, 12:23 AM EST | Winter Weather Advisory | PBZ | 43 hr |
| Jan 17, 11:00 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 17, 1:51 PM EST | Snow Squall Warning | PBZ | 39 min |
| Jan 17, 2:28 PM EST | Snow Squall Warning | PBZ | 62 min |
| Jan 18, 1:18 PM EST | Cold Weather Advisory | PBZ | 47 hr |
| Jan 19, 10:20 AM EST | Snow Squall Warning | PBZ | 55 min |
| Jan 19, 10:27 AM EST | Snow Squall Warning | PBZ | 63 min |
| Jan 19, 11:50 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 19, 12:10 PM EST | Snow Squall Warning | PBZ | 65 min |
| Jan 20, 1:33 PM EST | Winter Weather Advisory | PBZ | 44 hr |
| Jan 21, 10:14 PM EST | Mesoscale Discussion | SPC | 3 hr |
| Jan 22, 2:04 AM EST | Winter Storm Watch | PBZ | 23 hr |
| Jan 22, 12:49 PM EST | Cold Weather Advisory | PBZ | 45 hr |
| Jan 23, 12:53 AM EST | Winter Storm Warning | PBZ | 3 days |
| Jan 25, 10:00 AM EST | Mesoscale Discussion | SPC | 3 hr |
| Jan 25, 11:57 AM EST | Extreme Cold Watch | PBZ | 12 hr |
| Jan 25, 11:52 PM EST | Extreme Cold Warning | PBZ | 3 days |
| Jan 27, 12:02 AM EST | Cold Weather Advisory | PBZ | 35 hr |
| Jan 27, 6:24 PM EST | Snow Squall Warning | PBZ | 51 min |
| Jan 27, 7:15 PM EST | Special Weather Statement | PBZ | 45 min |
| Jan 27, 11:34 PM EST | Cold Weather Advisory | PBZ | 59 hr |
| Jan 29, 11:28 PM EST | Cold Weather Advisory | PBZ | 36 hr |
| Feb 5, 2:09 AM EST | Extreme Cold Watch | PBZ | 10 hr |
| Feb 5, 11:57 AM EST | Extreme Cold Warning | PBZ | 70 hr |
| Feb 5, 12:04 PM EST | Cold Weather Advisory | PBZ | 70 hr |
| Feb 6, 8:29 PM EST | Snow Squall Warning | PBZ | 31 min |
| Feb 6, 8:48 PM EST | Snow Squall Warning | PBZ | 42 min |
| Feb 8, 12:31 PM EST | Cold Weather Advisory | PBZ | 21 hr |
| Feb 15, 8:35 PM EST | Dense Fog Advisory | PBZ | 15 hr |
| Feb 18, 8:13 PM EST | Dense Fog Advisory | PBZ | 13 hr |
| Mar 2, 2:10 AM EST | Winter Weather Advisory | PBZ | 32 hr |
| Mar 3, 12:36 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Mar 3, 5:58 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Mar 4, 12:49 AM EST | Dense Fog Advisory | PBZ | 10 hr |
| Mar 6, 4:29 AM EST | Dense Fog Advisory | PBZ | 6 hr |
| Mar 7, 12:57 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Mar 7, 1:23 PM EST | Tornado Watch | SPC | 5 hr |
| Mar 7, 2:58 PM EST | Severe Thunderstorm Warning | PBZ | 47 min |
| Mar 11, 10:10 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 12, 1:38 AM EDT | Wind Advisory | PBZ | 46 hr |
| Mar 13, 12:41 AM EDT | High Wind Warning | PBZ | 28 hr |
| Mar 15, 1:55 AM EDT | Wind Advisory | PBZ | 46 hr |
| Mar 16, 2:13 AM EDT | Winter Weather Advisory | PBZ | 39 hr |
| Mar 16, 6:13 PM EDT | Mesoscale Discussion | SPC | 4 hr |
| Mar 17, 6:35 PM EDT | Snow Squall Warning | PBZ | 25 min |
| Mar 22, 6:36 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Mar 22, 8:46 PM EDT | Severe Thunderstorm Warning | PBZ | 44 min |
| Mar 26, 4:25 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Mar 26, 4:52 PM EDT | Tornado Watch | SPC | 6 hr |
| Mar 26, 6:43 PM EDT | Tornado Warning | PBZ | 17 min |
| Mar 26, 7:40 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Mar 31, 6:12 PM EDT | Severe Thunderstorm Warning | PBZ | 63 min |
| Mar 31, 6:26 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Mar 31, 6:57 PM EDT | Severe Thunderstorm Warning | PBZ | 63 min |
| Mar 31, 8:18 PM EDT | Severe Thunderstorm Warning | PBZ | 42 min |
| Mar 31, 8:57 PM EDT | Severe Thunderstorm Warning | PBZ | 67 min |
| Mar 31, 9:03 PM EDT | Severe Thunderstorm Warning | PBZ | 34 min |
| Mar 31, 10:33 PM EDT | Flash Flood Warning | PBZ | 3 hr |
| Apr 1, 1:21 AM EDT | Areal Flood Warning | PBZ | 6 hr |
| Apr 1, 5:30 AM EDT | Areal Flood Warning | PBZ | 6 hr |
| Apr 3, 4:15 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 14, 2:03 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Apr 15, 1:44 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 15, 2:56 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 15, 5:37 PM EDT | Severe Thunderstorm Warning | PBZ | 38 min |
| Apr 15, 6:12 PM EDT | Severe Thunderstorm Warning | PBZ | 48 min |
| Apr 16, 2:36 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Apr 16, 3:34 PM EDT | Severe Thunderstorm Warning | PBZ | 41 min |
| Apr 16, 4:08 PM EDT | Severe Thunderstorm Warning | PBZ | 43 min |
| Apr 16, 4:08 PM EDT | Severe Thunderstorm Warning | PBZ | 42 min |
| Apr 18, 12:38 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 18, 12:56 PM EDT | Freeze Watch | PBZ | 12 hr |
| Apr 19, 12:29 AM EDT | Freeze Warning | PBZ | 32 hr |
| Apr 19, 12:17 PM EDT | Freeze Watch | PBZ | 13 hr |
| Apr 20, 12:48 AM EDT | Freeze Warning | PBZ | 32 hr |
| Apr 30, 1:06 AM EDT | Frost Advisory | PBZ | 32 hr |
| May 1, 12:53 PM EDT | Freeze Warning | PBZ | 19 hr |
| May 2, 12:27 PM EDT | Freeze Warning | PBZ | 21 hr |
| May 5, 8:40 PM EDT | Severe Thunderstorm Warning | PBZ | 50 min |
| May 9, 4:36 PM EDT | Mesoscale Discussion | SPC | 84 min |
| May 9, 7:52 PM EDT | Severe Thunderstorm Warning | PBZ | 53 min |
| May 10, 1:20 PM EDT | Frost Advisory | PBZ | 19 hr |
| May 10, 1:20 PM EDT | Freeze Watch | PBZ | 23 hr |
| May 11, 12:45 PM EDT | Freeze Warning | PBZ | 19 hr |
| May 13, 11:56 AM EDT | Mesoscale Discussion | SPC | 3 hr |
| May 13, 1:33 PM EDT | Severe Thunderstorm Warning | PBZ | 42 min |
| May 24, 7:41 PM EDT | Flash Flood Warning | PBZ | 3 hr |
| May 25, 2:11 AM EDT | Dense Fog Advisory | PBZ | 7 hr |
| Jun 6, 11:07 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 6, 11:54 AM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 6, 1:36 PM EDT | Severe Thunderstorm Warning | PBZ | 39 min |
| Jun 11, 12:27 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 11, 1:20 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 14, 1:25 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 14, 1:40 PM EDT | Mesoscale Discussion | SPC | 5 min |
| Jun 14, 4:27 PM EDT | Severe Thunderstorm Warning | PBZ | 63 min |
| Jun 14, 4:52 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Jun 14, 4:54 PM EDT | Severe Thunderstorm Warning | PBZ | 66 min |
| Jun 14, 5:11 PM EDT | Severe Thunderstorm Warning | PBZ | 79 min |
| Jun 20, 2:29 PM EDT | Severe Thunderstorm Warning | PBZ | 46 min |
| Jun 25, 3:10 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 25, 5:52 PM EDT | Mesoscale Discussion | SPC | 23 min |
| Jun 25, 5:56 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 29, 12:53 PM EDT | Heat Advisory | PBZ | 5 days |
| Jun 30, 1:30 AM EDT | Extreme Heat Warning | PBZ | 5 days |
| Jul 3, 12:25 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 3, 6:59 PM EDT | Severe Thunderstorm Warning | PBZ | 46 min |
| Jul 3, 7:36 PM EDT | Severe Thunderstorm Warning | PBZ | 24 min |
| Jul 3, 8:09 PM EDT | Severe Thunderstorm Warning | PBZ | 51 min |
| Jul 3, 9:40 PM EDT | Severe Thunderstorm Warning | PBZ | 52 min |
| Jul 4, 1:36 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 4, 1:59 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 4, 3:30 PM EDT | Severe Thunderstorm Warning | PBZ | 45 min |
| Jul 5, 11:03 AM EDT | Flood Watch | PBZ | 11 hr |
| Jul 5, 1:24 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 5, 2:35 PM EDT | Flash Flood Warning | PBZ | 3 hr |
| Jul 6, 2:09 AM EDT | Flood Watch | PBZ | 21 hr |
| Jul 6, 5:58 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 10, 1:56 AM EDT | Flood Watch | PBZ | 20 hr |
| Jul 10, 1:13 PM EDT | Flash Flood Warning | PBZ | 3 hr |
| Jul 10, 2:50 PM EDT | Severe Thunderstorm Warning | PBZ | 40 min |
| Jul 14, 12:45 PM EDT | Heat Advisory | PBZ | 31 hr |
| Jul 18, 12:18 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Jul 18, 1:02 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 18, 6:26 PM EDT | Severe Thunderstorm Warning | PBZ | 64 min |
| Jul 18, 6:47 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Jul 18, 7:03 PM EDT | Flash Flood Warning | PBZ | 3 hr |
| Jul 18, 7:26 PM EDT | Severe Thunderstorm Warning | PBZ | 49 min |
| Jul 21, 4:16 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Jul 21, 7:19 PM EDT | Special Weather Statement | CLE | 41 min |
| Jul 21, 7:51 PM EDT | Severe Thunderstorm Warning | PBZ | 39 min |
| Aug 2, 2:04 AM EDT | Flood Watch | PBZ | 21 hr |
| Aug 8, 5:54 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 8, 6:27 PM EDT | Severe Thunderstorm Warning | PBZ | 48 min |
| Aug 8, 7:37 PM EDT | Severe Thunderstorm Warning | PBZ | 38 min |
| Aug 10, 8:41 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 10, 9:29 AM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 16, 1:05 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Aug 16, 2:28 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 22, 11:38 AM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 22, 1:22 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 22, 3:50 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Aug 22, 4:06 PM EDT | Severe Thunderstorm Warning | PBZ | 39 min |
| Aug 22, 4:31 PM EDT | Severe Thunderstorm Warning | PBZ | 44 min |
| Sep 1, 6:00 PM EDT | Mesoscale Discussion | SPC | 90 min |
| Sep 2, 6:04 AM EDT | Mesoscale Discussion | SPC | 116 min |
| Sep 2, 8:15 AM EDT | Severe Thunderstorm Warning | PBZ | 60 min |
| Sep 2, 8:51 AM EDT | Mesoscale Discussion | SPC | 84 min |
| Sep 2, 9:12 AM EDT | Severe Thunderstorm Warning | PBZ | 48 min |
| Sep 2, 3:58 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Sep 2, 4:56 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Sep 2, 5:06 PM EDT | Severe Thunderstorm Warning | PBZ | 39 min |
| Sep 2, 8:48 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Sep 3, 2:07 AM EDT | Mesoscale Discussion | SPC | 113 min |
| Sep 3, 2:16 AM EDT | Severe Thunderstorm Warning | PBZ | 45 min |
| Sep 3, 5:31 AM EDT | Severe Thunderstorm Warning | PBZ | 59 min |
| Sep 3, 6:29 AM EDT | Severe Thunderstorm Warning | PBZ | 46 min |
| Sep 3, 11:15 AM EDT | Flood Watch | PBZ | 11 hr |
| Sep 3, 1:44 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Sep 3, 3:03 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Sep 3, 3:34 PM EDT | Severe Thunderstorm Warning | PBZ | 56 min |
| Sep 3, 4:02 PM EDT | Tornado Warning | PBZ | 28 min |
| Sep 3, 4:16 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Sep 3, 4:23 PM EDT | Severe Thunderstorm Warning | PBZ | 67 min |
| Sep 3, 4:55 PM EDT | Severe Thunderstorm Warning | PBZ | 35 min |
| Sep 3, 6:02 PM EDT | Flash Flood Warning | PBZ | 3 hr |
| Sep 3, 6:51 PM EDT | Severe Thunderstorm Warning | PBZ | 54 min |
| Sep 3, 7:29 PM EDT | Flash Flood Warning | PBZ | 3 hr |
| Sep 9, 2:06 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Sep 9, 2:51 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Sep 9, 4:42 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Sep 11, 1:26 PM EDT | Flood Watch | PBZ | 40 hr |
| Sep 13, 3:59 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 13, 5:17 PM EDT | Severe Thunderstorm Warning | PBZ | 30 min |
| Sep 13, 5:26 PM EDT | Flash Flood Warning | PBZ | 3 hr |
| Sep 13, 5:30 PM EDT | Severe Thunderstorm Warning | PBZ | 34 min |
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 archive2025
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.