Area Forecast Discussion
Issued by NWS Grand Forks, ND

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FXUS63 KFGF 212026

Area Forecast Discussion
National Weather Service Grand Forks ND
326 PM CDT Sun May 21 2017

.SHORT TERM...(This evening through Monday)
Issued at 319 PM CDT Sun May 21 2017

Area will be under the influence of an 500 mb low which will be
over Minnesota into Monday. The center of the low is advancing
north this mid aftn into the arrowhead region and this upper low
will move north into Ontario then west and back south into north
central MN Monday aftn. Scattered rain showers will continue
around the upper low...tonight more confined to areas east and
north of a Langdon-Grand Forks-Wadena line...then threat for
showers will increase Monday midday-aftn in NW MN as center of low
moves close by. Net result was to keep sct rw- thru the night into
Monday RRV and NW MN, with a period higher pops NW MN Monday aftn.

To the west an upper wave is moving south thru Saskatchwan and
this will drop south thru the next 24 hrs thru wrn ND into SD.
Scattered showers and t-storms with this will stay west of our
fcst area. Thus Devils Lake-Valley City region mostly in between
these two systems thru Monday and has less chance for rain. Temps
will remain below normal daytime Monday...though some sunny breaks
DVL region into SE ND should push that area into the low 60s vs
50s elsewhere.

.LONG TERM...(Monday night through Sunday)
Issued at 319 PM CDT Sun May 21 2017

500 mb low will drop south Monday night into Tuesday. Continued
chc of showers Monday night and then improving weather Tuesday
from the northwest as the upper low departs. Wednesday will see
sunshine return and warmer temps as a brief ridge builds in.

For Thursday and Friday...expect temperatures in the low 70s ahead
of a low pressure system slowly shifting east across the area
bringing increased chances for showers or storms. By Saturday and
Sunday...the system continues progressing east with an upper trof
shifting over the area...bringing slightly cooler temperatures to
the region. A few weak disturbances will propagate around the base
of the trof... triggering periods of light precipitation through the
end of the forecast period.


.AVIATION...(For the 18Z TAFS through 18Z Monday afternoon)
Issued at 105 PM CDT Sun May 21 2017

Upper low will wobble over Minnesota through Monday. This will
maintain low level moisture and lowest ceilings east of the Red
River with IFR and low end MVFR. RRV will see MVFR with psbl low
end VFR at times. DVL on the edge between MVFR/VFR and should go
more VFR as we progress into tonight/Monday. North winds continue
10 to 20 kts.




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