Scientific Forecaster Discussion
Area forecast discussion...updated
National Weather Service Huntsville Alabama
1200 PM CDT Tuesday Sep 1 2015
for 18z tafs
/issued 1048 am CDT Tuesday Sep 1 2015/
areas of dense fog mainly near bodies of water and in the valleys
have finally dissipated. Current visible satellite shows terrain
influenced cumulus already developing and additional cloud cover moving in
from the SW.
Taking a look at regional water vapor...there are 3 upper level
features in play. There is an upper level low over Texas and la that
will stream clouds into the region today and an embedded low across
Indiana. Finally...there is a broad ridge of high pressure across
the southeast coast. High pressure will build today allowing for a
dry forecast and temperatures to warm up into the upper 80s/lower 90s.
Adjusted dewpoints for current trends and upstream observation. Otherwise the
forecast was on track for today.
for 18z tafs... VFR conditions are expected this afternoon into early
evening with a sct035-050agl cumulus layer. Radiation fog is expected
again tonight in area valleys that may again impact khsv and kmsl
with at least MVFR visibilities of 3-5sm. Visibilities could drop to IFR at both
sites as well from 08-12z ranging from as low as 3/4sm at kmsl and
2sm at khsv.
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