Area Forecast Discussion
Issued by NWS Little Rock, AR
FXUS64 KLZK 212047
Area Forecast Discussion
National Weather Service Little Rock AR
247 PM CST Tue Feb 21 2017
.Short term...Tonight through Thursday night...
Biggest concern this period will be dealing with an upper level low
passing to the south of the state. With all short term models in
basically good agreement with this feature, will simply blend
forecast solutions this afternoon.
Cut off upper low clearly seen on moisture channel imagery this
afternoon and is currently straddling the Arkansas/Louisiana
border. System expected to move east and then southeast and just
to the south of Mobile Bay by Wednesday morning.
Moisture continues to wrap around the departing system with numerous
showers across the county warning area. Airmass is stable enough
that thunderstorms are not expected although a clap of thunder or
two can be totally discounted. Shower activity will continue
through early evening before starting to wane and a pre-tonight
period will be added to the forecast. Moisture looks to remain deep
through the night with little if any clearing and fog formation is
In the wake of the upper low, weak upper ridging will move in for
Wednesday and with quasi-zonal flow in place aloft, highs in the mid
70s should be common across the state. Meanwhile, low pressure will
kick out of the Rockies on Thursday and be located in the central
high plains by the end of the period. Southerly flow will get
cranking for Thursday and record breaking temperatures will be
Cold front associated with the system Thursday/Thursday night will
be over northwest Oklahoma by the end of the period and forecast to
come through in the extended period. Mav/Mex numbers look good and
are generally accepted.
.Long Term...Friday thru Tuesday...
Primary concern at the beginning of the extended term will be
relating to fire weather conditions. A front will be pushing through
the state during the day, bringing much cooler and drier air to the
region, along with gusty winds.
Afternoon RH values will drop down into the 30 percent range, and
west to northwest winds will be gusty, especially during the
The second issue of note will be a return of freezing temperatures
to the state. On Saturday night temperatures across the northwest
half of the state are expected to drop down below the 32 degree
mark. In an ordinary February this would not be of much
significance, but due to the unseasonably warm weather of late, this
may catch some residents by surprise.
With little snow cover to the north - you have to go all the way to
northern Minnesota and northern North Dakota right now to find any,
the impact of the cold front will be significantly lessened. By
Monday the surface high will settle to the east, bringing a return
southerly flow to the area. Afternoon high temperatures on Thursday
will be back up into the 70`s across much of the state.
With the return flow in place on Monday and Tuesday, and a swly flow
aloft, I went ahead and went with the consensus model guidance of 20-
30 POPs across much of the area. This seems reasonable given the
likelihood of shortwaves rippling out ahead of the next trof taking
shape in the swrn Us.
.PRELIMINARY POINT TEMPS/POPS...
Batesville AR 51 74 55 77 / 20 0 0 0
Camden AR 51 76 52 81 / 20 0 0 0
Harrison AR 49 76 53 78 / 10 0 0 0
Hot Springs AR 50 74 52 78 / 20 0 0 0
Little Rock AR 51 75 53 79 / 20 0 0 0
Monticello AR 53 74 53 79 / 30 0 0 0
Mount Ida AR 49 75 53 79 / 10 0 0 0
Mountain Home AR 48 75 53 77 / 10 0 0 0
Newport AR 51 74 53 77 / 20 10 0 0
Pine Bluff AR 52 74 53 79 / 20 0 0 0
Russellville AR 49 76 52 80 / 10 0 0 0
Searcy AR 51 74 52 78 / 20 0 0 0
Stuttgart AR 53 73 54 78 / 20 0 0 0
Short Term...56 / Long Term...53