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Area forecast discussion
National Weather Service La Crosse WI
1052 PM CDT Tue Jul 23 2019

Short term...(tonight through Wednesday night)
issued at 130 PM CDT Tue Jul 23 2019

Keeping an eye on convective potential this afternoon with incoming
mid-level shortwave trough/weak pv-advection. Better potential looks
to be east of the Mississippi River and mainly across central WI.
Otherwise, beside the smoke haze aloft from Alaska wildfires, skies
were mostly sunny with temperatures as of 1 PM in the mid 70s to
lower 80s. De points remain rather pleasant as well sitting in the
upper 50s/near 60.

A slight chance of showers/isolated thunder will continue into this
evening, mainly east of the Mississippi River as that mid-level wave
drops through. Convection expected to shut off soon after sunset
with loss of surface heating and as the wave exits southeast. The
remainder of the night looks quiet as a high pressure ridge settles
overhead. Under mostly clear skies and very light airflow, there
will be the potential for some fog, mainly in the river valleys.
Otherwise, plan on lows in the mid 50s to lower 60s.

Wednesday will be quiet overall. Northwest flow aloft will bring
another wave southeastward but appears forcing for any showers will
be east of our area. We will like see just a build up of cumulus
otherwise with highs topping off in the lower/mid 80s.

Wednesday night will see a slight increase in high/mid clouds mainly
after midnight in warm air advection ahead of a cold front moving
east across the northern plains. Plan on overnight lows ranging from
the upper 50s/low 60s.

Long term...(thursday through tuesday)
issued at 130 PM CDT Tue Jul 23 2019

Warm air advection continues Thursday ahead of the incoming cold
front from the plains. Better moisture transport stays well
northwest of the area, so expecting dry weather through the day with
highs topping off in the 80s.

Shower thunderstorm chances increase overnight Thursday into Friday
as the cold front finally makes its way through the area. Better
forcing/moisture transport looks to be north of the area, so better
chances for convection will be more across northern WI into the up.
Will keep a 20-40% pop in for areas mainly north of I-90. Look for
highs Friday well into the 80s.

Frontal boundary looks to hang up across the area through the
weekend with another reinforcing cold front rolling in Sunday night
into Monday. This will keep shower/thunder chances going into early
next week but chances of severe weather/heavy rainfall looks low at
this point.

&&

Aviation...(for the 06z tafs through 06z Wednesday night)
issued at 1103 PM CDT Tue Jul 23 2019

A brief period of MVFR to IFR conditions are possible in br at klse
early Wednesday morning, otherwise VFR conditions are expected
through the taf period. An isolated shower or thunderstorm cannot be
ruled out Wednesday afternoon at klse, otherwise high pressure will
provide quiet weather.

&&

Arx watches/warnings/advisories...
WI...none.
Minnesota...none.
Iowa...none.
&&

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