U.S. Severe Weather Forecast for Tomorrow
Upcoming severe weather outlook.
acus02 kwns 181717
Storm Prediction Center ac 181716
Day 2 convective outlook
National Weather Service Storm Prediction Center Norman OK
1116 am CST Thursday Dec 18 2014
Valid 191200z - 201200z
..there is a marginal risk of severe thunderstorms across parts of the middle to
Upper Texas coast and la coast...
Strong thunderstorms are possible Friday across parts of middle and
Upper Texas coastal areas into the vicinity of the Louisiana coast.
..middle to Upper Texas coast/western la...
An upper-level trough will move from northern Mexico tonight into the Southern
Plains on Friday. At the surface...a moist airmass will be in place
across the Texas coastal plains extending east-northeastward into southern la.
Thunderstorms should be ongoing at the start of the period along a
sharp gradient in low-level moisture from near Victoria northeastward to near
Beaumont. Model forecasts generally move this activity slowly eastward
with time with convection forecast to affect the marginal risk area
through the morning and into the afternoon. Forecast soundings at
Victoria and Beaumont at 18z show 0-6 km shear of 60 to 65 knots and
effective shear near 30 knots. In spite of poor lapse rates...the
amount of shear may be enough to for marginally severe wind gusts
with the strongest cells. Instability along the coasts of Texas and la
is forecast to remain weak throughout the day which should keep any
severe threat brief.