High pressure was centered off the Atlantic coast.  Southerly flow has transported mild temperatures and moisture northward into the Mid Atlantic Region.  Calm winds and low level moisture led to dense fog overnight.  This was the second consecutive day of dense fog in the region.

Dense Fog in NORTHERN FAUQUIER, VIRGINIA
From 12-JAN-13 17:49:00 to 14-JAN-13 00:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Visibility was reported around a quarter mile at Dulles International and Leesburg Airports.

Dense Fog in RAPPAHANNOCK, VIRGINIA
From 12-JAN-13 19:49:00 to 14-JAN-13 00:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Visibility was reported around a quarter mile at Dulles International and Leesburg Airports.

Dense Fog in ORANGE, VIRGINIA
From 12-JAN-13 18:15:00 to 12-JAN-13 23:55:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Visibility was reported around a quarter mile at Orange Airport.

Dense Fog in CULPEPER, VIRGINIA
From 12-JAN-13 18:15:00 to 13-JAN-13 10:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Visibility was reported around a quarter mile at Culpeper Airport.

Dense Fog in PRINCE WILLIAM, VIRGINIA
From 12-JAN-13 21:55:00 to 13-JAN-13 03:55:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Visibility was reported around a quarter mile at Manassas Airport.

Dense Fog in FAIRFAX, VIRGINIA
From 12-JAN-13 17:49:00 to 14-JAN-13 00:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Visibility was reported around a quarter mile at Dulles International Airport.

Dense Fog in STAFFORD, VIRGINIA
From 12-JAN-13 18:35:00 to 12-JAN-13 23:15:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Visibility was reported around a quarter mile at Stafford Airport.

Dense Fog in KING GEORGE, VIRGINIA
From 12-JAN-13 22:35:00 to 13-JAN-13 23:15:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Visibility was reported around a quarter mile at Stafford and Fredericksburg Airports.

Dense Fog in SPOTSYLVANIA, VIRGINIA
From 13-JAN-13 01:15:00 to 13-JAN-13 11:35:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Visibility was reported around a quarter mile at Fredericksburg Airport.

Dense Fog in SOUTHERN FAUQUIER, VIRGINIA
From 12-JAN-13 18:15:00 to 13-JAN-13 08:55:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Visibility was reported around a quarter mile at Warrenton Airport.

Dense Fog in MADISON, VIRGINIA
From 13-JAN-13 00:53:00 to 13-JAN-13 04:50:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Visibility was reported around a quarter mile at Charlottesville Airport.

Dense Fog in ALBEMARLE, VIRGINIA
From 13-JAN-13 01:53:00 to 13-JAN-13 04:50:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Visibility was reported around a quarter mile at Charlottesville Airport.

Dense Fog in GREENE, VIRGINIA
From 13-JAN-13 01:53:00 to 13-JAN-13 04:50:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Visibility was reported around a quarter mile at Charlottesville Airport.

Dense Fog in NELSON, VIRGINIA
From 13-JAN-13 01:53:00 to 13-JAN-13 04:50:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Visibility was reported around a quarter mile at Charlottesville Airport.

Dense Fog in AUGUSTA, VIRGINIA
From 13-JAN-13 05:35:00 to 13-JAN-13 08:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Visibility was reported around a quarter mile at Shenandoah Airport.

Dense Fog in ROCKINGHAM, VIRGINIA
From 13-JAN-13 05:35:00 to 13-JAN-13 08:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Visibility was reported around a quarter mile at Shenandoah Airport.

Dense Fog in FREDERICK, VIRGINIA
From 13-JAN-13 04:15:00 to 13-JAN-13 09:15:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Visibility was reported around a quarter mile at Winchester Airport.

Dense Fog in CLARKE, VIRGINIA
From 13-JAN-13 04:15:00 to 13-JAN-13 09:15:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Visibility was reported around a quarter mile at Winchester Airport.

Dense Fog in SHENANDOAH, VIRGINIA
From 13-JAN-13 05:05:00 to 13-JAN-13 09:15:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Visibility was reported around a quarter mile at Shenandoah and Winchester Airports.

Dense Fog in ARLINGTON, VIRGINIA
From 13-JAN-13 02:52:00 to 13-JAN-13 05:45:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Visibility was reported around a quarter mile at Reagan National Airport.

Dense Fog in LOUDOUN, VIRGINIA
From 12-JAN-13 17:49:00 to 14-JAN-13 00:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Visibility was reported around a quarter mile at Dulles International and Leesburg Airports.