000
FXUS63 KMPX 240255
AFDMPX

Area Forecast Discussion
National Weather Service Twin Cities/Chanhassen MN
955 PM CDT Fri Jun 23 2017

.UPDATE...For 06z Aviation discussion below

&&

.SHORT TERM...(This evening through Saturday)
Issued at 310 PM CDT Fri Jun 23 2017

A few random showers developed during the late morning/early
afternoon in an area of limited instability across
central/southwest Minnesota. Cloud cover and a persistent gusty
northwest wind also kept temperatures from rising too much during
the early afternoon. Although I can`t rule out an isolated rumble
of thunder as a pocket of cooler temperatures move overhead this
afternoon, most of the precipitation is diurnally driven, so any
showers will die off quickly this evening.

A stronger disturbance that was diving south/southeast across
southern Saskatchewan will move across central/southern Minnesota,
and portions of west central Wisconsin Saturday afternoon. Colder
air aloft associated with the disturbance should allow for better
instability and hence, better coverage of precipitation than
today. Therefore, high chance, to likely percentages are noted
for Saturday afternoon in the southeast 1/3 of MPX forecast area.
As temperatures continue to cool in the boundary layer
tonight/Saturday, kept close to previous forecast temperatures in
the low to mid 60s for Saturday afternoon. This is 15 degrees
below normal for late June.

.LONG TERM...(Saturday night through Friday)
Issued at 250 PM CDT Fri Jun 23 2017

Little change to the long term forecast period.  The main topic of
discussion is the deep trough across eastern North America and when
the ridge to the west will displace the cool airmass from the Upper
Midwest.

By tomorrow night, the longwave trough will really encompass the
eastern 2/3 of North America with 850H temps as low as +4C in the
area until the west coast ridge can progress eastward early next
week. We`ll see another shortwave drop down from Canada and bring
more chances for showers and thunderstorms on Sunday.  Limited QPF
would accompany these showers and no severe weather would be
expected with any small storms that do form.

High pressure will fill on Monday which looks to be quite a nice day
weather-wise.  Mostly sunny skies with winds of 5 to 10 MPH, high
temps topping out in the low 70s and dew points holding in the mid
40s.

Winds will turn southerly and increase Tuesday on the back side of
the high as the upper ridge builds eastward across our area.  This
will mark the return to near normal high temperatures for this time
of year with temps around 80 degrees Tuesday through Thursday.  With
that though comes a higher chance of thunderstorms and deeper
moisture.  POPs Tuesday night have been increased into the likely
category as shortwave moves in along with strong warm air and
moisture advection.  That will be our next chance of widespread
appreciable rainfall.

&&

.AVIATION...(For the 00Z TAFS through 00Z Saturday evening)
Issued at 956 PM CDT Fri Jun 23 2017

Cloud cover will be minimal overnight with winds decreasing to
around or below 10 kts. Gusty northwest winds develop again by
late morning Saturday, along with a broken-overcast stratocu
deck. Scattered showers and isolated thunderstorms will most
likely be a bit greater in coverage on Saturday afternoon, with
attendant brief MVFR conditions.

KMSP...
No concerns beyond the above discussion expected.

/OUTLOOK FOR KMSP/
Sun...VFR. Chc MVFR with p.m. -TSRA. Winds NW 10-15 kts.
Mon...VFR. Winds NW 5-10 kts.
Tue...VFR. Chc TSRA aftn, likely late. Winds S 5-10 kts.

&&

.MPX WATCHES/WARNINGS/ADVISORIES...
WI...None.
MN...None.
&&

$$

SHORT TERM...JLT
LONG TERM...SPD
AVIATION...LS