Area Forecast Discussion
Issued by NWS Grand Forks, ND

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FXUS63 KFGF 170000
AFDFGF

Area Forecast Discussion
National Weather Service Grand Forks ND
700 PM CDT Wed Aug 16 2017

.UPDATE...
Issued at 700 PM CDT Wed Aug 16 2017

Upper level low pressure system was over eastern SD and northeast
NE. Dry slot was nosing into southern MN and is forecast to shift
into much of WI by 12Z Thu. Deformation zone will occur from
eastern SD/southwest MN to northeast MN. Fair amount of rain
expected over the far southeast zones.

&&

.SHORT TERM...(This evening through Thursday)
Issued at 219 PM CDT Wed Aug 16 2017

H7 low just west of FSD to propagate east to MSP by morning. This
track would keep heaviest rain axis just to our south and east as
most recent guidance has been indicating. Even so expecting a 1-2
inch rain along and south of a line from Fergus Falls to Park
Rapids and cannot rule out locally higher amounts. This area
received lesser rain amounts over the past week and with ability
to drain and lack of deep convective potential am not expecting
significant flooding issues however will need to monitor.  Rain
amounts/pops will taper off to the w-nw. Clearing line through the
far nw fa will reach the northern and central valley region by
morning. with light wind, recent rain and clearing fog looks
possible from DVL basin into the northern valley. Fairly dry low
level air upstream however not likely to reach too far into the fa
so lows will hinge pretty close to dewpoints in the 50s to lower
60s.

H7 low will continue to propagate to the great lakes Thursday
taking the rain area with it. Any lingering shra will be limited
to the far east by afternoon. Clouds will limit highs over the
east tomorrow however once any fog burns off expecting full sun
elsewhere with dry column and high convective temperatures. Could
see a respectable thermal gradient across the fa with western
areas reaching seasonal averages around 80s to the 60s in the
east.

.LONG TERM...(Thursday night through Wednesday)
Issued at 219 PM CDT Wed Aug 16 2017

Overall pattern in the extended period looks a little more unsettled
as a series of waves cross the area.

For Thursday night...some rain will linger but mainly east of the
Red River valley. Conditions will improve on Thursday with moderate
temperatures and relatively light winds.

By Friday...an advancing upper level wave will provide chances for
another batch of showers or storms. However...the day on Saturday
looks to be more tranquil before another system approaches the
forecast area late Saturday night into Sunday morning.  This system
is expected to bring another chance for more showers/storms.
Otherwise...temperatures overall through the period look to remain
near seasonal values, with daytime highs in the upper 70s and lows
in the mid 50s.

&&

.AVIATION...(For the 00Z TAFS through 00Z Thursday evening)
Issued at 700 PM CDT Wed Aug 16 2017

MVFR/IFR conditions covered much of southeast ND and northwest and
west central MN. VFR conditions were over northeast ND. Expect IFR
conditions to occur/develop over the MN side of the Red River
after midnight. IFR conditions will continue over southeast ND but
conditions may improve from the west after midnight. Fog may
become a problem in the Devils Lake basin later tonight. So IFR
conditions will be possible in northeast ND later tonight. IFR
cigs and visibilities should improve Thu morning. VFR conditions
will shift east across the area late Thu morning and into the
afternoon.

&&

.FGF WATCHES/WARNINGS/ADVISORIES...
ND...None.
MN...None.
&&

$$

UPDATE...JH
SHORT TERM...Voelker
LONG TERM...Hopkins
AVIATION...JH


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