Area Forecast Discussion
Issued by NWS Springfield, MO
FXUS63 KSGF 151644
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SPRINGFIELD MO
1144 AM CDT Mon Sep 15 2014
.SHORT TERM...(Today and Tuesday night)
A few sprinkles were moving into southern Missouri this morning in
response to weak isentropic ascent over Oklahoma. It`s unlikely
that measurable rainfall will occur with this activity, and we
think the radar echoes will decline through the morning hours.
This will give way to a mostly dry morning across the Ozarks,
under cloudy skies and southerly breezes.
Rain chances however, will increase this afternoon and evening, as
an upper level disturbance forces a cold front into southern
We think sufficient instability will result in some thunderstorms,
particularly along the Interstate 44 corridor late this afternoon.
Eventually this area of rainfall will drift south near the
Arkansas border into the overnight hours. Some models suggest that
convection will persist overnight near the Arkansas border. So we
have left precipitation chances down there into Tuesday morning.
Eventually the stalled out front over Arkansas begins to wash out
and we lose our forcing mechanism for rainfall. This will lead to
dry conditions from Tuesday afternoon and Tuesday night.
.LONG TERM...(Wednesday through Sunday)
Precipitation chances ramp up again on Wednesday as an upper speed
max passes over a mid level zone of baroclinicity. Additional
showers and thunderstorms will occur, and we think most locations
will receive some measurable rain. Specifically if this same
pattern continues into Thursday, which both the GFS and ECMWF suggests.
By Friday and the upcoming weekend, a ridge of high pressure will
build back into the nation`s mid section. This will result in
mostly dry weather along with a warming trend. As a matter of
fact, readings could trend back into the 80s this weekend.
.AVIATION...(For the 18Z TAFS through 18Z Tuesday Afternoon)
Issued at 1144 AM CDT MON SEP 15 2014
Isolated thunderstorm over central MO will likely shift east-
southeast and miss much of the CWA and should remain well
northeast of the 3 terminals. However, a cold front will track
south through the area this afternoon/evening and could bring
widely scattered showers/thunderstorms to the area. For now, will
go with VCTS/CB coding in the 18z TAFS for SGF/JLN for late
afternoon/early evening which will be along the frontal boundary.
Looking like stratus will move in behind the front later this
evening with IFR conditions possible through the overnight hours.