Cold, Canadian air spilled south into the Southern Plains and Lower Mississippi Valley during January 9th and 10th, ahead of strong high pressure over the Central Plains. Meanwhile, an upper trough traversed the Southern Rockies on the 9th and amplified upon entering the Southern Plains during the early morning hours of the 10th, producing a large swath of heavy snow across much of Western and Central Texas, which eventually moved into East Texas and North Louisiana during the afternoon and evening hours. Snowfall amounts ranged from two to in excess of six inches, with the highest totals falling along a corridor from Smith, Cherokee, Rusk, Panola, Shelby, and Nacogdoches Counties. These accumulations resulted in treacherous travel conditions across these areas, with the weight of the heavy wet snow contributing to a total of 56,128 customers without power across the AEP SWEPCO service area across East Texas and North Louisiana. An additional 55,000 customers with Oncor, Rusk County Electric, Upshur Rural Electric, and the Deep East Texas Electric Coop were also without power following this winter storm.
Here are the snowfall totals measured from various locations across East Texas:
Wood County: 2.6 N Hawkins: 3.0 inches.
Smith County: Bullard: 5.5 inches, Flint: 5 inches, Winona: 5.0 inches, 3 SE Tyler Pounds Field Airport: 4.5 inches, 2.2 NNE Lindale: 4.1 inches, 0.8 ESE Whitehouse: 4.0 inches, Tyler: 4.0 inches, Noonday: 4.0 inches, 3 NE Lindale: 3.5 inches.
Gregg County: Liberty City: 5.0 inches, 1 SW Liberty City: 4.5 inches, East TX Regional Airport: 4 inches, Longview: 3.8 inches, 4 ESE East Mountain: 3 inches, East Longview: 3.0 inches, Judson: 2.0 inches.
Upshur County: 3.9 E Big Sandy: 5.0 inches, Big Sandy: 3.0 inches, Gilmer: 2.8 inches, 1 NE Bettie: 1.8 inches, 2 W Diana: 1.1 inches.
Marion County: Jefferson: 1.5 inches, 15.4 ESE Jefferson: 1.3 inches.
Harrison County: 4 S Hallsville: 4.8 inches, 4.9 NE Marshall: 4.0 inches, Marshall: 3.0                       inches, 1 E Marshall: 2.5 inches, 4.6 WSW Harleton: 2.0 inches, Jonesville: 2.0 inches, Crossroads: 1.5 inches, 2.6 N Karnack: 1.3 inches.
Panola County: Gary City: 5.0 inches, Carthage: 4.5 inches.
Rusk County: 9 WNW Mount Enterprise: 6.5 inches, Henderson: 6.1 inches, 6.9 WNW Henderson: 5.0 inches.
Cherokee County: 3.7 E Bullard: 6.3 inches, 2 W New Summerfield: 6.1 inches, Rusk: 6.0 inches, Jacksonville: 5.5 inches, 7 SSW Jacksonville: 5.0 inches, 3 SSW Jacksonville: 4.0 inches, 10 S Cuney: 4.0 inches.
Angelina County: 5 ESE Wells: 5.0 inches, 7 W Lufkin: 4.2 inches, 2 ESE Zavalla: 3.1 inches, Lufkin: 3.0 inches, Diboll: 2.5 inches.
Nacogdoches County: 9.5 NE Nacogdoches: 6.2 inches, Appleby: 6.0 inches, 5 SSW Nacogdoches: 5.5 inches, Nacogdoches: 5.0 inches, 8 NE Wells: 4.3 inches, 4 SW Appleby: 4.0 inches.
Shelby County: 5 NW Center: 6.5 inches, Center: 6.0 inches, Joaquin: 6.0 inches, Timpson: 5.5 inches.
San Augustine County: 5 N San Augustine: 4.0 inches, 15.3 SE Broaddus: 1.0 inch.
Sabine County: Sexton: 5.0 inches, Hemphill: 2.5 inches.

Winter Storm in WOOD, TEXAS
From 10-JAN-21 14:00:00 to 11-JAN-21 08:11:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Winter Storm in SMITH, TEXAS
From 10-JAN-21 14:00:00 to 11-JAN-21 08:11:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Winter Storm in GREGG, TEXAS
From 10-JAN-21 14:00:00 to 11-JAN-21 08:11:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Winter Storm in UPSHUR, TEXAS
From 10-JAN-21 14:00:00 to 11-JAN-21 08:11:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Winter Storm in MARION, TEXAS
From 10-JAN-21 14:00:00 to 11-JAN-21 08:11:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Winter Storm in HARRISON, TEXAS
From 10-JAN-21 14:00:00 to 11-JAN-21 08:11:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Winter Storm in PANOLA, TEXAS
From 10-JAN-21 14:00:00 to 11-JAN-21 08:11:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Winter Storm in RUSK, TEXAS
From 10-JAN-21 14:00:00 to 11-JAN-21 08:11:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Winter Storm in CHEROKEE, TEXAS
From 10-JAN-21 14:00:00 to 11-JAN-21 08:11:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Winter Storm in ANGELINA, TEXAS
From 10-JAN-21 14:00:00 to 11-JAN-21 08:11:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Winter Storm in NACOGDOCHES, TEXAS
From 10-JAN-21 14:00:00 to 11-JAN-21 08:11:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Winter Storm in SHELBY, TEXAS
From 10-JAN-21 14:00:00 to 11-JAN-21 08:11:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Winter Storm in SAN AUGUSTINE, TEXAS
From 10-JAN-21 14:00:00 to 11-JAN-21 08:11:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Winter Storm in SABINE, TEXAS
From 10-JAN-21 14:00:00 to 11-JAN-21 08:11:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS