Area Forecast Discussion
Issued by NWS Grand Forks, ND

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FXUS63 KFGF 240914

Area Forecast Discussion
National Weather Service Grand Forks ND
314 AM CST Fri Feb 24 2017

.SHORT TERM...(Today and tonight)
Issued at 314 AM CST Fri Feb 24 2017

Temperatures will be the main forecast concern for the period.

Water vapor loop continues to show split flow aloft with the main
upper low to our south over Neb moving into IA today.
Precipitationfrom this system will continue to remain well to
our south and east. A weak northern branch shortwave will also be
moving through, bringing a bit of clouds and maybe a flurry this
morning. Even with cirrus coming up from the south and mid level
clouds this morning from the northern branch shortwave, there
should be some sunshine during the day today. However, we will be
deeper into the colder air with north winds somewhat breezy over
the southern counties. Have highs today between 5 to 10 degrees
cooler than yesterday, topping out mostly in the 20s.

Tonight, conditions should remain fairly quiet under northwesterly
flow aloft and weak high pressure moving east. Mid level moisture
will begin to come in from the west and should bring some clouds,
but some parts of the CWA, most likely the northeast, should
remain mostly clear. Have temps ranging from single digits to mid
teens in the southwest.

.LONG TERM...(Saturday through Thursday)
Issued at 314 AM CST Fri Feb 24 2017

Saturday and Sunday...A weak shortwave moving through the
northwesterly flow aloft will bring a chance for some light precip
Saturday afternoon and night. There is still some variation
between the model runs, but at this point it seems that the weak
surface trough will move along the ND/SD border, with best precip
chances moving across the western counties Saturday afternoon and
into the southern counties for Saturday night. Amounts will be
very very light, with a half an inch or less expected. Northwest
to westerly flow will continue into Sunday and Sunday night, and
there are signs of another even weaker shortwave moving through.
Any precip from these will be even lighter and amount to no more
than flurries. Temps over the weekend will be near seasonal
values, with highs ranging from near 20 north to low 30s south and
lows in the single digits to teens.

Monday through Friday...Models show a general broad trof across the
northern plains and into the Great Lakes to start the period. An
impulse propagating across the region will bring chances for light

By Tuesday...the upper pattern shifts to a more southwesterly flow
with a wave ejecting out of the Rockies. Model vary greatly as to
placement of surface features so confidence is low as to where the
greatest chances for precipitation are. Therefore...will continue to
follow guidance and go with a blended soln with respect to POPs for
now. Behind the system...expect a slight cooling trend to impact the
area by Thursday.  Another wave is forecast to approach the area by
the end the period bringing another chance for light pcpn...and
temperatures continuing near seasonal norms.


.AVIATION...(For the 06Z TAFS through 06Z Friday night)
Issued at 1142 PM CST Thu Feb 23 2017

Dealing with remains of MVFR stratocu in the southern RRV and
parts of wcntrl MN. These have been in and out of Fargo. As
continued north winds bring in drier airmass at 850 mb will
continue to see less of these stratocu and do expect VFR cigs for
the majority of the time this period at all TAF sites. One slight
flaw is area of 4-5k ft agl clouds Rolla to just west of Winnipeg.
These are slowly moving east and southeast and may for a time
move into DVL/GFK late tonight/friday morning. North winds 5 to 15
kts overnight 10-18 kts Friday.




LONG TERM...JR/Hopkins
AVIATION...Riddle is the U.S. government's official web portal to all federal, state and local government web resources and services.