Area Forecast Discussion
Issued by NWS La Crosse, WI

Home | Current Version | Previous Version | Graphics & Text | Print | Product List | Glossary Off
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

000
FXUS63 KARX 302042
AFDARX

AREA FORECAST DISCUSSION
National Weather Service La Crosse WI
Issued by National Weather Service Quad Cities IA IL
342 PM CDT Thu Mar 30 2017

.SHORT TERM...(THIS EVENING THROUGH Friday)
ISSUED AT 340 PM CDT THU MAR 30 2017

Forecast focus on ending the rain tonight then gradual decrease in
cloudiness on Friday.

Tonight: Surface low pressure in western/central IL will shift into
northern Indiana overnight. With the associated closed upper low in
eastern MO also tracking slowly eastward, this will maintain the
cyclonic flow/low stratus across the ARX cwa. Any lingering areas of
rain or showers will gradually come to an end overnight, as the
forcing pushes off to our east. Northerly winds will feed cool air
into the cwa with lows in the lower 30s.

Friday: Gradually the storm system moves into the OH Valley allowing
high pressure ridge to begin building into the cwa, from northwest
to southeast. Clouds will gradually decrease as the day progresses.
Highs should push into the upper 40s to lower 50s, assuming at least
some sunshine in the afternoon.

.LONG TERM...(Friday NIGHT THROUGH Thursday)
ISSUED AT 340 PM CDT THU MAR 30 2017

Forecast focus on parade of storm systems moving through the Midwest.

Friday night through Saturday night: Dry period with a split flow
aloft and surface high pressure dominating the cwa. With clear to
partly cloudy skies temperatures will be trending towards normal
for early April. Highs should be in the 50s with lows in the 30s.

Sunday and Sunday night: Progressive upper level trough should
spread more showers across the cwa. This system is weaker and
moisture is rather limited so rain amounts appear light at this time.
Temperatures will be somewhat cooler due to the clouds and showers
with highs around 50. Pops will be in the 60-80 percent range.

Monday and Monday night: High pressure again brings dry weather but
milder, as the flow aloft becomes southwest. This will allow for
warmer temperatures again, with highs well into the 50s.

Tuesday through Wednesday: Operational models (ECMWF/GFS) similar in
tracking a strong storm system across Iowa, with another potential
widespread rain event for the ARX cwa. However, the Canadian model
suggests the storm system to track farther south, with the northern
fringes of the rain shield remaining along/south of Highway 20.
As of now, the grids will favor the wet look with likely pops over
most of the cwa.

&&

.AVIATION...(FOR THE 18Z TAFS THROUGH 18Z Friday AFTERNOON)
ISSUED AT 105 PM CDT THU MAR 30 2017

MVFR/lcl IFR conds expected this afternoon into tonight, then MVFR
cigs on Friday. Areas of showers will continue this afternoon and
into this evening, especially in sw WI. Northeast to north winds
10 to 15 knots through the period.

&&

.ARX WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

$$

SHORT TERM...Haase
LONG TERM...Haase
AVIATION...Haase


USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.