A strong arctic cold front moved through southern Mississippi and southeast Louisiana during the afternoon hours of the 16th. The cold air behind the front changed the precipitation from rain to freezing rain and snow across portions of the area to the north of Interstate 10. After the precipitation ended, most roads remained icy through much of the day on the 17th and many did not fully open until Jan 18th when temperatures warmed into the upper 30s and lower 40s. The Arctic airmass that spread into the region behind the front brought some of the coldest temperatures to the region in the past 10 years. Low temperatures on the morning of the 17th ranged from the lower teens in southwest Mississippi to mid and upper teens along the coast. High temperatures barely reached freezing. in most areas. Many schools and businesses were closed for two to three days due to wintry precipitation and icing on roadways.   Record low temperatures on the morning of January 17th included Gulfport-Biloxi Airport 17 degrees and Pascagoula Lott Airport 18 degrees.

Winter Weather in AMITE, MISSISSIPPI
From 16-JAN-18 15:00:00 to 16-JAN-18 22:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Moderate to heavy snow was briefly reported across Amite County during the afternoon and early evening hours. About 1.5 inches of snow was reported at Liberty.

Winter Weather in WILKINSON, MISSISSIPPI
From 16-JAN-18 15:00:00 to 16-JAN-18 22:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A brief period of freezing rain and sleet turned to snow across the county, with 1.5 inches of snow reported at Woodville, and an inch of snow reported at Centreville.

Winter Weather in PEARL RIVER, MISSISSIPPI
From 16-JAN-18 16:00:00 to 16-JAN-18 22:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A mix of freezing rain and sleet was reported in McNeil. A glaze of ice was observed on vehicles.

Heavy Snow in WALTHALL, MISSISSIPPI
From 16-JAN-18 16:00:00 to 16-JAN-18 22:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Walthall County Emergency Manager reported 3 inches of snow in Tylertown, with lesser amounts around the county.

Heavy Snow in PEARL RIVER, MISSISSIPPI
From 16-JAN-18 18:00:00 to 17-JAN-18 02:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Pearl River County Emergency Manager reported 2 inches of snow near Poplarville, with lesser amounts of snow and sleet elsewhere in the county.

Winter Weather in HARRISON, MISSISSIPPI
From 16-JAN-18 20:00:00 to 17-JAN-18 03:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Harrison County Emergency Manager reported snow accumulations less than one half inch near DeLisle.

Winter Weather in JACKSON, MISSISSIPPI
From 16-JAN-18 21:00:00 to 17-JAN-18 03:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Jackson County Emergency Manager reported accumulations of snow less than one half inch northwest of Vancleave.

Winter Weather in HANCOCK, MISSISSIPPI
From 16-JAN-18 20:00:00 to 17-JAN-18 02:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Sleet and freezing rain produced icy road conditions across Hancock County.