An unseasonably cold upper level storm system moved slowly south from the northern Rockies with an associated potent surface cold front. Rain and higher terrain snow developed along the cold front as it plunged south into New Mexico on the 11th. Very heavy snow fell in the Sangre de Cristo Mountains where up to a foot was reported in less than 12 hours. A sharp band of snow then developed over eastern New Mexico along the Interstate 40 corridor east of the Sandia Mountains. The area from Santa Rosa to Tucumcari was slammed with snowfall rates on the order of one to two inches per hour on the evening of the 11th. Severe travel conditions developed over the area with numerous rollovers and closed roadways. Snow gradually ended over the eastern plains during the overnight hours but persisted through the 12th over the high terrain of northern New Mexico. Storm total accumulations in the higher terrain of northern New Mexico ranged from 12 to 20 inches. Clearing skies, exceptionally dry air, and snow pack led to record temperatures across parts of New Mexico in the wake of this system.

Heavy Snow in CENTRAL HIGHLANDS, NEW MEXICO
From 11-NOV-18 16:00:00 to 12-NOV-18 05:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Seven inches of snow reported around Pedernal. Difficult travel conditions were reported along Interstate 40 and several semi trailers rolled over. Extent of injuries is unknown.

Winter Weather in SANTA FE METRO AREA, NEW MEXICO
From 12-NOV-18 10:00:00 to 12-NOV-18 12:00:00 (MST-7)
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A vehicle slid off Interstate 25 and rolled over. Two people were taken to the hospital with injuries and the vehicle was destroyed. The extent of injuries is unknown.

Heavy Snow in NORTHEAST HIGHLANDS, NEW MEXICO
From 11-NOV-18 13:00:00 to 12-NOV-18 14:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Snowfall amounts ranged from 2 to 8 inches across the Las Vegas area. Difficult travel conditions were reported.

Heavy Snow in GUADALUPE COUNTY, NEW MEXICO
From 11-NOV-18 16:00:00 to 12-NOV-18 16:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Snowfall amounts ranged from 3 to 6 inches along Interstate 40 around Santa Rosa and Cuervo. Severe travel conditions were reported.

Heavy Snow in QUAY COUNTY, NEW MEXICO
From 11-NOV-18 15:00:00 to 12-NOV-18 13:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Snowfall amounts ranged from 5 to 11 inches along Interstate 40 around Tucumcari. Severe travel conditions were reported. The 10.5 inches at the Tucumcari COOP location smashed the daily record for November 12th and was the second heaviest snowfall for any day in November.

Heavy Snow in WEST SLOPES OF THE SANGRE DE CRISTO MOUNTAINS, NEW MEXICO
From 11-NOV-18 10:00:00 to 12-NOV-18 21:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Observations showed 5 to 15 inches of snow fell across the area.

Heavy Snow in NORTHERN SANGRE DE CRISTO MOUNTAINS ABOVE 9500 FEET/RED RIVER, NEW MEXICO
From 11-NOV-18 10:00:00 to 12-NOV-18 21:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Observations showed 10 to 18 inches of snow fell across the area. Bobcat Pass was closed for several hours east of Red River. Severe travel conditions were reported across the area.

Heavy Snow in SOUTHERN SANGRE DE CRISTO MOUNTAINS ABOVE 9500 FEET, NEW MEXICO
From 11-NOV-18 10:00:00 to 12-NOV-18 21:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Ski Santa Fe and SNOTELs showed 11 to 15 inches of snow fell across the area.

Heavy Snow in EAST SLOPES OF THE SANGRE DE CRISTO MOUNTAINS, NEW MEXICO
From 11-NOV-18 10:00:00 to 12-NOV-18 21:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Several observations showed 10 to 14 inches of snow fell across the area. U.S. 64 was closed for several hours. Severe travel conditions were reported across much of the area.

Heavy Snow in UPPER RIO GRANDE VALLEY, NEW MEXICO
From 11-NOV-18 11:00:00 to 12-NOV-18 06:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Several observations showed 4 to 9 inches of snow fell across the area. Severe travel conditions were reported across much of the area.

Heavy Snow in SANDIA/MANZANO MOUNTAINS, NEW MEXICO
From 11-NOV-18 16:00:00 to 12-NOV-18 05:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Observations showed 4 to 11 inches of snow reported across the area. Difficult travel conditions were reported.

Heavy Snow in ESTANCIA VALLEY, NEW MEXICO
From 11-NOV-18 16:00:00 to 12-NOV-18 05:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Observations showed 4 to 9 inches of snow reported across the area. Difficult travel conditions were reported.