- Day Three
acus03 kwns 200725
Storm Prediction Center ac 200724
Day 3 convective outlook
National Weather Service Storm Prediction Center Norman OK
0124 am CST sun Jan 20 2019
Valid 221200z - 231200z
..no severe thunderstorm areas forecast...
only isolated weak thunderstorms are possible Tuesday night across
parts of Louisiana and southern Mississippi.
Low pressure will move rapidly northeast from Kansas into lower Michigan on
Tuesday as a large upper trough develops across the plains. At the
surface, high pressure will shift off the East Coast allowing for
minimal low-level moisture return over the Gulf of Mexico. Lower 60s
f dewpoints will move inland as far north as southern MS Tuesday
night ahead of a cold front which will support an increasing threat
of precipitation. Instability will be very weak, and mostly
offshore, but a few weak storms may develop over la and into
southern MS overnight. With such weak instability, severe weather is
unlikely despite increasing shear.