Alert archive / Pennsylvania / Dense Fog Advisories

Dense Fog Advisories in Pennsylvania, 2012

23 dense fog advisories in 2012. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of dense fog advisories reaches back to 2005.

Dense Fog Advisories by county

Each county as a circle sized by its count in 2012. Tap one for its archive.

Dense Fog Advisories: 23
Busiest month: December9 dense fog advisories
Busiest day: December 17, 20124 dense fog advisories

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	Counties	Lasted
Feb 23, 3:51 AM EST	Dense Fog Advisory	CLE	Crawford, Erie	5 hr
Mar 1, 2:24 AM EST	Dense Fog Advisory	CTP	Adams, Bedford, Blair, Cumberland, Franklin, Fulton and 3 more	6 hr
Mar 3, 6:12 AM EST	Dense Fog Advisory	PHI	Delaware, Philadelphia	3 hr
Mar 17, 3:23 AM EDT	Dense Fog Advisory	CLE	Crawford, Erie	6 hr
Mar 20, 2:02 AM EDT	Dense Fog Advisory	PHI	Delaware, Philadelphia	8 hr
Mar 21, 8:02 PM EDT	Dense Fog Advisory	PHI	Delaware, Philadelphia	14 hr
Mar 22, 11:00 PM EDT	Dense Fog Advisory	CTP	Adams, Cumberland, Dauphin, Lancaster, Lebanon, York	10 hr
Mar 23, 4:22 AM EDT	Dense Fog Advisory	PHI	Berks, Lehigh, Northampton	5 hr
May 15, 3:34 AM EDT	Dense Fog Advisory	PBZ	Allegheny, Beaver, Butler, Greene, Lawrence, Mercer and 2 more	6 hr
May 27, 2:37 AM EDT	Dense Fog Advisory	CTP	Bedford, Blair, Centre, Fulton, Huntingdon, Mifflin	6 hr
Aug 8, 6:27 AM EDT	Dense Fog Advisory	PHI	Delaware, Philadelphia	4 hr
Aug 15, 4:55 AM EDT	Dense Fog Advisory	CLE	Crawford, Erie	4 hr
Oct 3, 12:26 AM EDT	Dense Fog Advisory	PHI	Delaware, Philadelphia	10 hr
Nov 12, 2:42 AM EST	Dense Fog Advisory	PHI	Delaware, Philadelphia	7 hr
Dec 1, 7:09 PM EST	Dense Fog Advisory	PHI	Berks, Carbon, Delaware, Lehigh, Monroe, Northampton and 1 more	14 hr
Dec 1, 7:24 PM EST	Dense Fog Advisory	BGM	Lackawanna, Luzerne, Pike, Wayne	14 hr
Dec 2, 1:10 AM EST	Dense Fog Advisory	CTP	Adams, Cumberland, Dauphin, Franklin, Lancaster, Lebanon and 3 more	8 hr
Dec 3, 2:05 AM EST	Dense Fog Advisory	CLE	Crawford, Erie	8 hr
Dec 9, 7:23 PM EST	Dense Fog Advisory	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	14 hr
Dec 16, 8:41 PM EST	Dense Fog Advisory	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	16 hr
Dec 16, 8:52 PM EST	Dense Fog Advisory	CTP	Lancaster, York	12 hr
Dec 17, 2:38 PM EST	Dense Fog Advisory	CTP	Adams, Lancaster, York	13 hr
Dec 17, 3:27 PM EST	Dense Fog Advisory	PHI	Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more	12 hr

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record The radar archive 2011 2013

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.