Area Forecast Discussion
National Weather Service Huntsville AL
1056 PM CST Mon Jan 15 2018
.NEAR TERM...(Rest of tonight)
Issued at 1056 PM CST Mon Jan 15 2018
The arctic front is quickly moving southeast across the TN Valley
and is about to pass over KDCU after already passing KMSL. The bigger
news is the update in snowfall accumulations...
Made a real quick update to trend snowfall accumulations up due to
the mesoscale trends in snowfall rates with the band of snow to the
NW over N MS/W TN. Snowfall to liquid ratios are looking to be around
15:1 to 20:1 in far NW AL and perhaps 15:1 over north central
AL/southern middle TN.
The upward trend has resulted in a small area over far NW AL having
forecast amount of nearly 2 inches. If the trend continues to hold,
may need to upgrade a few counties to winter storm warning (criteria
is >2 inches). For now though, have just updated the wording in the
winter weather advisory to reflect the current thinking. Also, made
an adjustment to raise probabilities for snow beginning around 09Z-
12Z and trended adjustments to the falling temperatures.
.SHORT TERM...(Tuesday night through Wednesday night)
Issued at 137 PM CST Mon Jan 15 2018