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, roads remained icy across much of the area through the day on the 17th and roadways were not fully cleared of ice until the afternoon of 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 mid teens in interior parts of southeast Louisiana to low and mid 20s along in coastal area. Record low temperatures on the Jan 17th included 20 degrees at New Orleans International Airport and 14 degrees at Baton Rouge Airport.  High temperatures only went above freezing for a few hours on the afternoon of the 17th. Due to unusually cold temperatures and bursting of water pipes occurred in many locations in coastal parishes, especially elevated houses.  Bursting of pipes and residents running water to prevent pipe freezing caused low water pressure in many areas resulting in boil water advisories in several coastal parishes including the City of New Orleans. Many schools and businesses, especially in coastal parishes were closed from the Jan 16th -18th due to either icy roadways or lack of water pressure.

Heavy Snow in EAST FELICIANA, LOUISIANA
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: Trained Spotter

A trained spotter reported 2.5 inches of snow at Jackson.

Heavy Snow in EAST BATON ROUGE, LOUISIANA
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: Public

Reports from the public in East Baton Rouge Parish included 3.25 inches of snow at Olive Branch and 2.5 inches at Zachary. Areas in Baton Rouge proper generally received around an inch of snow.

Heavy Snow in POINTE COUPEE, LOUISIANA
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: Broadcast Media

A Baton Rouge television station reported 2.5 inches of snow at Morganza in Pointe Coupee Parish. New Roads reported 2 inches of snow.

Winter Weather in WEST FELICIANA, LOUISIANA
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

Louisiana Highway 10 in West Feliciana Parish was reported closed due to icy conditions. The deputy chief of the West Feliciana Parish Fire District was killed north of St. Francisville when he was struck by another vehicle while investigating an accident due to the icy road conditions.

Heavy Snow in ST. HELENA, LOUISIANA
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 St. Helena Parish Emergency Manager reported 2 inches of snow near Easleyville and a little over an inch of snow at Pine Grove.

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

Sleet was reported at Napoleonville, with accumulations less than one quarter inch.

Winter Weather in ST. TAMMANY, LOUISIANA
From 16-JAN-18 18:00:00 to 17-JAN-18 00:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

A combination of freezing rain, sleet and snow produced accumulations generally one inch or less over mainly the western half of the parish.

Heavy Snow in NORTHERN TANGIPAHOA, LOUISIANA
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 Tangipahoa Parish Emergency Manager reported 4 inches of snow at Kentwood, and 2 inches of snow at Amite.

Winter Weather in SOUTHERN TANGIPAHOA, LOUISIANA
From 16-JAN-18 18:00:00 to 17-JAN-18 00:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Tangipahoa Parish Emergency Manager reported that accumulations of snow in the Hammond area were less than one inch.

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

The Washington Parish Emergency Manager reported 2 inches of snow at Franklinton and 1.75 inches near Bogalusa.

Heavy Snow in WEST BATON ROUGE, LOUISIANA
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 West Baton Rouge Emergency Manager reported 3 inches of snow just west of Port Allen, and 2 inches at Livonia and near Erwinville.

Heavy Snow in WEST FELICIANA, LOUISIANA
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: Broadcast Media

A Baton Rouge television station relayed a public report of 3 inches of snow at St. Francisville.

Winter Weather in ORLEANS, LOUISIANA
From 17-JAN-18 04:45:00 to 17-JAN-18 04:45:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

A 57 year old male was killed when he was hit by a vehicle on Interstate 10 near the High Rise after an accident due to icy roads.

Winter Weather in UPPER JEFFERSON, LOUISIANA
From 17-JAN-18 09:30:00 to 17-JAN-18 09:30:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

An 8 month old child was killed and his mother critically injured when their vehicle slid off an icy bridge into a canal in Metairie.

Extreme Cold/Wind Chill in POINTE COUPEE, LOUISIANA
From 17-JAN-18 11:00:00 to 17-JAN-18 11:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

In New Roads, One person died of hypothermia and another person was hospitalized when overnight temperatures dropped into the teens during early morning hours of Jan 17th. The elderly couple were disabled and were wheelchair bound. There was no heat in the house as they couple were afraid of using space heaters due to risk of a house fire.  The coroner reported temperatures was around 20 inside their house.