Freezing fog developed across much of the eastern plains of New Mexico during the early morning hours of the 11th. Fog continued through much of the day as temperatures struggled to reach the freezing mark behind an arctic front. Areas from Las Vegas to Clines Corners reported visibilities down to one quarter mile or less.  Farther east, near Tucumcari, the fog was not as dense. However, the fog resulted in a coating of ice on Interstate 40 that caused an animal rescue volunteer to lose control of the pickup she was driving, which slid into oncoming traffic.  The female driver and an 8-week old puppy died in the crash.

Freezing Fog in FAR NORTHEAST HIGHLANDS, NEW MEXICO
From 11-FEB-12 03:00:00 to 11-FEB-12 23:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Visibility bounced between one quarter mile and four miles at Raton for over 12 hours.

Freezing Fog in NORTHEAST HIGHLANDS, NEW MEXICO
From 11-FEB-12 03:30:00 to 11-FEB-12 22:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

One quarter mile visibility persisted at Las Vegas for over 8 hours.

Freezing Fog in UNION COUNTY, NEW MEXICO
From 10-FEB-12 09:15:00 to 11-FEB-12 11:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Visibility bounced between two and four miles at Clayton, though briefly dropped as low as one quarter mile.

Freezing Fog in HARDING COUNTY, NEW MEXICO
From 10-FEB-12 09:30:00 to 11-FEB-12 12:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Visibility was below four miles across Harding County for several hours.

Freezing Fog in EASTERN SAN MIGUEL COUNTY, NEW MEXICO
From 11-FEB-12 03:00:00 to 11-FEB-12 22:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Visibility was below four miles across eastern San Miguel County for several hours.

Freezing Fog in GUADALUPE COUNTY, NEW MEXICO
From 11-FEB-12 04:00:00 to 11-FEB-12 22:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Visibility was below four miles across Guadalupe County for several hours.

Freezing Fog in CURRY COUNTY, NEW MEXICO
From 11-FEB-12 05:00:00 to 11-FEB-12 11:15:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Visibility was below two miles across Curry County for several hours, and briefly dropped down to one quarter mile.

Freezing Fog in ROOSEVELT COUNTY, NEW MEXICO
From 11-FEB-12 05:00:00 to 11-FEB-12 11:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Visibility was below 3 miles for several hours.

Freezing Fog in DE BACA COUNTY, NEW MEXICO
From 11-FEB-12 05:00:00 to 11-FEB-12 11:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Visibility was below 3 miles for several hours.

Freezing Fog in QUAY COUNTY, NEW MEXICO
From 11-FEB-12 05:15:00 to 11-FEB-12 14:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

An animal rescue volunteer and an 8-week old puppy died in a crash on Interstate 40 near Tucumcari when freezing fog iced over the interstate.  Her pickup slid off I-40 onto oncoming traffic around 10 am and hit a tractor-trailer rig.  The semi then hit another vehicle and pinned it against the median barrier where both caught fire, but the occupants escaped.  At the time of the accident, visibility was reduced to approximately 4 miles with a temperature of 19 degrees.

Freezing Fog in CENTRAL HIGHLANDS, NEW MEXICO
From 11-FEB-12 06:00:00 to 11-FEB-12 22:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

One quarter mile visibility in freezing fog persisted for over 12 hours at Clines Corners.

Freezing Fog in EAST SLOPES OF THE SANGRE DE CRISTO MOUNTAINS, NEW MEXICO
From 11-FEB-12 03:00:00 to 11-FEB-12 22:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

The lower elevations of the east slopes had visibilities down to one quarter mile in freezing fog.

Freezing Fog in RATON RIDGE/JOHNSON MESA, NEW MEXICO
From 10-FEB-12 22:00:00 to 11-FEB-12 23:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

One quarter mile visibility in freezing fog persisted for over 12 hours at Capulin.