Scientific Forecaster Discussion
fxus64 klch 221126
Area forecast discussion
National Weather Service Lake Charles la
526 am CST Wed Feb 22 2017
infrared satellite imagery and surface observations Show Low level
stratus resulting in MVFR cigs across eastern taf sites. These
sites could see tempo IFR cigs through 15z this morning. The low
level stratus is expected to mix out giving way to VFR conditions
at all taf sites by early afternoon with northerly winds. Winds
should drop to variable after sunset tonight.
Previous discussion... /issued 255 am CST Wed Feb 22 2017/
wx map shows departing sfc low over the NE Gulf, with weak high
pressure building eastward from Texas. Slightly cooler and drier
air will continue to filter across the region this morning.
Only very slow clearing from west to east will continue today as
wrap around clouds associated with the upper low over MS/Alabama moves
slowly east as well. Thus, keeping mostly cloudy to cloudy skies
over c and SC la with highs only making it into the lower/mid 70s.
Further west over southeast TX, clearing skies will allow temps to rise
into the upper 70s.
For the remainder of the week, weak high pressure will gradually
slide eastward tonight and Thursday. Southerly winds will increase
Thursday night into Friday morning as low pressure intensifies
over the Central Plains. A stronger cold front will move through
the region late Friday night into Saturday morning. With limited
moisture, only going with 20% over south central Louisiana, with
less further west. Behind the front, temperatures will return to
normal values for Sunday.
Cool spell will not last long, as return flow expected by Monday with
temperatures rising to about 10-15 degrees above normal once again.
Bring in slight chances of precipitation by Tuesday with the approach
of the next upper level disturbance and frontal boundary.
northerly winds behind a departing cool front will linger today
before becoming light and variable tonight and Thursday as high
pressure settles over the region. Onshore flow will increase
Thursday afternoon into Friday morning as low pressure intensifies
over the Central Plains. Stronger offshore flow will return
Friday night and Saturday morning with a stronger cold frontal
Preliminary point temps/pops...
aex 73 53 79 57 / 0 0 0 10
lch 75 56 76 60 / 0 0 0 10
lft 74 54 78 59 / 0 0 0 10
bpt 78 57 77 62 / 0 0 0 10