Area Forecast Discussion
Issued by NWS La Crosse, WI

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FXUS63 KARX 190438

Area Forecast Discussion
National Weather Service La Crosse WI
1138 PM CDT WED MAY 18 2016

.SHORT TERM...(This evening through Thursday)
Issued at 319 PM CDT Wed May 18 2016

Main forecast concerns for tonight are on areas of frost across
portions of central Wisconsin.

High pressure overhead will provide light winds and mostly clear
skies tonight.  This will lead to areas of frost in favored cold
spots across central Wisconsin. A frost advisory goes into effect
tonight and continues through early thursday morning for Jackson,
Monroe, Juneau, and Adams counties. Plan on lows tonight ranging
from the lower 30s across northern Wisconsin to the lower 40s over
northeast Iowa.

A weak shortwave trough slides through the region tomorrow. The
shortwave will do little more than increase cloud cover briefly
across the area as high pressure holds strong at the surface.
Southerly winds will increase and help to bring slightly higher dew
points back into the region. Afternoon relative humidity values
look to fall to the lower 20s once again across central
Wisconsin. Elsewhere look for relative humidity values to fall
into the lower 30s. With winds being relatively light and green
up well underway, we are not expecting any fire weather concerns.

.LONG TERM...(Thursday night through Wednesday)
Issued at 319 PM CDT Wed May 18 2016

High pressure will dominate the weather pattern the rest of the week
with gradually moderating temperatures going into the weekend. By
Saturday, highs will climb well into the 70s with upper 70s expected
by Sunday. We may see some highs touch the lower 80s by Sunday.
Ridging breaks down early next week as southwest flow aloft sets up
across the Upper Mississippi River Valley. Chances for showers and
thunderstorms return Monday and continue into the middle of next
week. Temperatures will remain on the mild side with highs in the
70s and lows in the 50s.


.AVIATION...(For the 06Z TAFS through 06Z Thursday night)
Issued at 1138 PM CDT Wed May 18 2016

Clear skies overnight will give way to late morning/afternoon
cumulus in the 5000 to 7000 ft agl layer. Could see some VFR
ceilings develop mid-late afternoon with increasing mid-level
moisture moving northward along southerly return flow on backside
of departing surface high. Winds will persist from the south-
southeast...generally 10 kts or less at both TAF airfields.


.ARX Watches/Warnings/Advisories...
WI...Frost Advisory until 7 AM CDT Thursday for WIZ034-042>044.



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