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spc ac 191654

day 2 convective outlook
nws storm prediction center norman ok
1054 am cst wed feb 19 2020

valid 201200z - 211200z severe thunderstorm areas forecast...

isolated thunderstorms are possible early thursday morning from the
upper texas coast through the southern louisiana coast. severe
thunderstorms are not expected.

an upper trough is expected to extend from the upper great lakes
southwestward through the central high plains early thursday. this
trough is forecast to progress southeastward throughout the day,
moving through much of the oh valley, northern mid-atlantic and
northeast. upper ridging over the western conus at the beginning of
the period will remain largely in place while gradually dampening.

the upper pattern will act to reinforce the continental polar air
mass already in place across the majority of the conus. this will
lead to predominantly cold and dry conditions preclude thunderstorm
development. the only exception is over the immediate coastal areas
from the upper tx coast through southern la. in this area, a weak
surface low will move northeastward along the frontal zone early
thursday, resulting in enough lift to promote isolated thunderstorm

..mosier.. 02/19/2020

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note: the next day 2 outlook is scheduled by 0700z