FIRST ALERT WEATHER DAY in effect for Tuesday--Your updated fore - WAFF-TV: News, Weather and Sports for Huntsville, AL

FIRST ALERT WEATHER DAY in effect for Tuesday--Your updated forecast and timeline

(WAFF) -

Tuesday is a First Alert Weather Day for the potential for severe storms across North Alabama and southern Tennessee during the evening and overnight hours. 

A wind advisory will go into effect at noon Tuesday ahead of our advancing storm system.

You should expect to see the winds increase throughout the night and early Tuesday morning. Winds sustained at 20-30 mph with wind gusts up to 40 mph will be possible ahead of the strong to severe storms that will develop late Tuesday afternoon and evening.

The threat for severe weather will begin to develop as we enter the late afternoon hours (4 p.m.). Temperatures will warm into the lower 70s and the air will become unstable across all of North Alabama and southern Tennessee. 

The threat for supercell-type storms will happen roughly between 4-7 p.m. Any supercells that develop in the afternoon and early evening will be capable of large hail, strong tornadoes, significant lightning and damaging winds in excess of 65 mph. They will track northeast at 50 mph.  

The secondary threat for severe storms will come from a squall line that will track from west to east across North Alabama into the early morning hours.(11 p.m.-3 a.m.). Damaging straight line winds in excess of 65 mph will be possible along the main line in addition to embedded tornadoes (EF-0-EF-1). Rainfall totals between 2-4” could cause flash flooding by the evening hours.

Stay tuned for the latest forecast as we could still see a few changes in the setup. Remain weather alert.

Make sure you have the 48 First Alert Weather App handy - you can customize weather alerts for your neighborhood and also receive notices when lightning strikes near your area. Click here for more information or text 'APPS' to 44848.

Take the time now to ensure your weather radio is correctly programmed and has fresh batteries - click here for instructions on how to program your radio.

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