A Winter Weather Advisory in effect for North Alabama means light snowfall accumulations could impact travel on Tuesday. We expect around 1/2” on the low end to as much as 2-4” on the high end around North Alabama and Southern Tennessee from midnight to 10 AM Tuesday:
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Tuesday’ snowfall and what follows: A ‘Winter Weather Advisory’ issued by the National Weather Service in Huntsville means their expectation is an average snowfall of two inches of less and some impact to travel. There is a chance a Winter Storm Warning could be required given the expected high snow-to-liquid ratios: around 20:1 or higher.
That means a small fraction of an inch of rainfall, as little as 0.05” to 0.15” could produce snowfall as great as 1 to 3 inches. In spite of sunshine and a brief warm-up Monday, the ground will be cold enough for most of the snow to accumulate on both road surfaces and elevated objects. Snow and ice-covered roads are likely Tuesday morning through Wednesday; roads that stay shaded – especially where heavier amounts fall – may stay icy through Thursday when temperatures finally rise above freezing again.
A big ‘catch’ in the thawing process will be how cold it gets behind the snow: temperatures around 0ºF to 10ºF Wednesday morning with a wind chill well below zero. The brutally-cold air will keep the snow/ice frozen hard, and as the sun melts some of it Wednesday, anything that is liquid at sundown will freeze hard through Wednesday night into Thursday.
Track the winter weather with WHNT.com’s Interactive Radar or swipe over to the radar feature on Live Alert 19! Also be sure you’ve installed the WHNT News 19 ‘News App’ for push alerts on school and business closings as well as emergency highway information (if needed) in North Alabama and Southern Tennessee.
From the National Weather Service In Huntsville:
…Accumulating snow expected on Tuesday…
.A strong cold front will move through the region late Monday
night, with temperatures falling below freezing by midnight.
Meanwhile, a band of light snow is expected to develop behind the
front and enter northwest Alabama by sunrise on Tuesday. This band
of light snow will continue to move through the area during the
day before exiting the area shortly after sunset. Although
snow accumulations will generally remain below 1 inch,
temperatures are expected to be in the lower to mid 20s areawide.
This could create hazardous travel conditions through the day.
Madison-Morgan-Marshall-Jackson-De Kalb-Cullman-Franklin TN-
Including the cities of Huntsville, Decatur, Albertville, Boaz,
Guntersville, Arab, Scottsboro, Fort Payne, Rainsville, Cullman,
Winchester, Sewanee, Decherd, Estill Springs, and Cowan
354 AM CST Mon Jan 15 2018
…WINTER WEATHER ADVISORY IN EFFECT FROM 6 AM TO 9 PM CST
* WHAT…Light snow expected. Plan on slippery road conditions,
including during the evening commute on Tuesday. Total snow
accumulations of up to one inch are expected.
* WHERE…Portions of north central and northeast Alabama and
southern middle Tennessee.
* WHEN…From 6 AM to 9 PM CST Tuesday.
* ADDITIONAL DETAILS…Be prepared for reduced visibilities at
A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.