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Area forecast discussion 
National Weather Service quadrant cities Iowa Illinois
235 am CDT Friday Apr 18 2014

Synopsis...
issued at 233 am CDT Friday Apr 18 2014

06z surface analysis has high pressure from the upper Midwest into the
plains. A cold front ran from lower Michigan into the lower
Mississippi Valley. Radar trends show the rain over Illinois slowly
dissipating as it moves toward Indiana. Dew points were in the 20s
and 30s across the plains and upper Midwest with 40s and 50s across
the lower Mississippi Valley and deep south.

&&

Short term...(today and tonight)
issued at 233 am CDT Friday Apr 18 2014

Quiet and dry conditions will be seen today and tonight as high
pressure slowly moves through the Midwest. Winds are expected to
remain 10 miles per hour or less during the day. High temperatures should be
close to normal.

Long term...(saturday through thursday)
issued at 233 am CDT Friday Apr 18 2014

The upcoming week has all the apparent signs of being a true Spring
week...with each day offering up a mild Promise of leaving the
jacket in the closet when you leave your residence each morning.

This entire weekend will see dry conditions for at least the
easternmost part of Iowa...and more certainly over Illinois. The
weak forcing arriving from the west will be likely only able to
produce rainfall at locations of the best low level convergence.
With the main boundaries located to the northwest of the County Warning Area through
Sunday evening...I will further reduce our forecast probability of precipitation Sunday and
bring in the modest chance probability of precipitation for Sunday night and Monday as the
upper trough passes overhead. Models are showing a weak surface low
tonight with this time period...and should that feature continue to
gain confidence...we could see likely coverage of rainfall even
if diurnal timing is not favored. The GFS...which appears too
moist...it largely thrown out for now on its high quantitative precipitation forecast.
Temperatures Saturday and Sunday will reach the lower to middle 70s.
Winds will be southerly and gusty Saturday...but Sunday appears
less breezy. Thus...for those looking to have Easter activities
outdoors Sunday...it looks like a remarkable day in this otherwise
Cold Spring.

Monday and Tuesday will see somewhat cooler temperatures with the
passing weak upper trough. Mids 60s north to to around 70 are
expected. By Tuesday night...another trough will begin to exit The
Rockies...with a developing warm front to our west. This should
increase clouds...and easterly winds for Wednesday with possible
elevated showers and thunder. Wednesdays temperatures should be a
touch cooler with this rain possibly in the area with dry low level
flow. Guidance has cooled for this period...with highs in the upper
50s north to upper 60s south. This seems reasonable for now...but
could even become a cooler day if we do see persistent clouds and
rainfall. Further chances for showers and storms exists into
Thursday...with milder weather as the front is forecast to lift
north by the GFS and European model (ecmwf) solutions.
Ervin

&&

Aviation...(for the 06z tafs through 06z Friday night)
issued at 1133 PM CDT Thursday Apr 17 2014

High pressure over Minnesota will through WI overnight causing winds over the
middle Mississippi Valley to veer to the northeast then east by
Friday morning. The area of high pressure and the dry low level
air mass will keep VFR conditions over the area tonight. Friday...
winds will continue to veer the to the southeast but remain
light...as low pressure forms over the central/northern plains.
Conditions will remain VFR through Friday evening.



&&

Dvn watches/warnings/advisories...
Iowa...none.
Illinois...none.
MO...none.
&&

$$

Synopsis...08
short term...08
long term...Ervin
aviation...dlf