Area Forecast Discussion
Issued by NWS Duluth, MN

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FXUS63 KDLH 312337

Area Forecast Discussion
National Weather Service Duluth MN
637 PM CDT TUE MAY 31 2016

Issued at 637 PM CDT Tue May 31 2016

Moderate to heavy rain continued to fall over much of northwest
Wisconsin early this evening. Radar and observations reveal the
heaviest rain, from 2 to 4 inches, from south central Sawyer
county northeast toward west central Iron county. Calls to
spotters and law enforcement reveal only minor flooding at this
time. Area radars shows the overall intensity of the rain has
diminished since late afternoon, but heavy rain will remain
possible for the next few hours. The heaviest rain will gradually
shift east with the 925mb axis of higher theta-e and convergence.
Additional advisories or even warnings for the heavy rainfall may
be needed yet this evening.


.SHORT TERM...(This evening through Wednesday)
Issued at 240 PM CDT Tue May 31 2016

At 300pm, the vertically stacked low was centered in north
central North Dakota...with the dry slot positioned across
western minnesota...wrapping into the eastern Dakotas. Clouds and
rain showers were found in the warm sector lifting over the
eastern half of the forecast area.

The dry slot will migrate over the Minnesota zones this
evening...bringing a break to the precipitation. A few showers or
thunderstorms will be possible through the evening along the
leading edge of the dry slot in a region of surface convergence.
however, latest high resolution guidance suggests any convection
is isolated and short lived. Locations in Northern Wis can expect
the showers and thunderstorms to persists through evening with
periods of heavy rain and possible small hail. The severe risk
looks minimal at this time as clouds limited heating today.

The slow moving area of low pressure will reach NW minnesota
around daybreak...tracking into Ontario Wednesday. The day will
start dry for most locations...with Wrap around clouds and rain
showers spreading south and east across the western lake superior
region through the afternoon. These showers will be light with
minimal QPF. winds will also be gusty out of the southwest to west
as much cooler mid level air with 850hPa temps of only a few
degrees above zero C pushes into the region.

.LONG TERM...(Wednesday night through Monday)
Issued at 344 AM CDT Tue May 31 2016

The northern stream upper level shortwave and closed low will
continue to move slowly along the international border Wednesday
Night. Some lingering showers are possible Wednesday night and
into early Thursday, mainly across the northern portions of the
CWA. A flat westerly flow will establish itself behind the
departing system, with generally dry and cool conditions expected
for Thursday and Thursday night. The weather will then make a
dramatic change for the end of the work week and into the upcoming
weekend. The flat northerly flow will amplify considerably on
Friday night, as an upper level shortwave digs into minnesota and
the western Lake Superior region on Friday night and Saturday. The
system will eventually close off and remain over the Lake Superior
region throughout the weekend. The best chance of showers and a
few thunderstorms will be Friday and Friday night. The models are
in good agreement concerning this system and we have generally
high confidence in this solution. Cooler air will pull southward
out of Canada behind this system, with cool northerly flow
persisting for the end of the weekend. A warm up will then take
place early in the upcoming work week. Highs throughout the period
will generally be in the 60s and 70s. Lows will be in the 40s and
50s. The coolest night looks to be Thursday night, where some 30s
will be possible.


.AVIATION...(For the 00Z TAFS through 00Z Wednesday evening)
Issued at 637 PM CDT Tue May 31 2016

Widespread rain and a few thunderstorms continued over northwest
Wisconsin into parts of the Arrowhead this evening. This activity
will gradually shift east through the evening hours.

A mix of conditions from LIFR to VFR will occur. The lowest
visibility/ceiling will occur around Lake Superior where a moist
flow will continue off the lake tonight. Conditions will gradually
improve either late tonight but more so on Wednesday as a surface
low moves into northern Minnesota switching winds to south to
southwest. Ceilings are expected to be mainly MVFR or low VFR on
Wednesday. Showers are expected to move back into the rest of
northern Minnesota as the low moves through the area.


DLH  43  61  46  64 /  30  30  20  10
INL  47  58  48  62 /  40  70  40  10
BRD  49  62  47  71 /  10  30  20   0
HYR  55  68  47  68 /  70  20  20  10
ASX  47  67  48  66 /  90  10  20  10


.DLH Watches/Warnings/Advisories...
LS...Small Craft Advisory until 4 AM CDT Wednesday for LSZ121-140>148.



SHORT TERM...Graning
AVIATION...Melde is the U.S. government's official web portal to all federal, state and local government web resources and services.