National Weather Service Text Product Display

Area Forecast Discussion
Issued by NWS Quad Cities, IA IL

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

000
FXUS63 KDVN 230828
AFDDVN

Area Forecast Discussion
National Weather Service Quad Cities IA IL
328 AM CDT Wed Aug 23 2017

.SYNOPSIS...
Issued at 328 AM CDT Wed Aug 23 2017

High pressure centered over eastern Nebraska and a dry northwest
flow aloft were producing clear skies, light winds and seasonably
cool conditions across the local forecast area. At 3 am,
temperatures were in the lower to mid 50s across the forecast
area.

&&

.SHORT TERM...(Today and Tonight)
ISSUED AT 328 AM CDT Wed Aug 23 2017

High pressure migrating east over the region will provide another
seasonably cool and dry day over the forecast area. With the same
dry airmass and a similar thermal profile, went with similar
highs as yesterday from the mid 70s north to upper 70s south. A
weaker pressure gradient will result in lighter northwest winds,
generally from 10 to 15 mph.

Tonight, there may be a few high clouds, otherwise conditions will
be similar to those found early this morning with lows again in the
lower to mid 50s.

.LONG TERM...(Thursday through Tuesday)
ISSUED AT 328 AM CDT Wed Aug 23 2017

No significant changes to the extended forecast.

Thursday through Tuesday

Expect slightly below normal temps in the mid to upper 70s on avg
and lows in the 50s. Localized areas may fall into the 40s a few of
the nights. Also, shallow radiation fog is possible in favored low-
lying areas late at night into the early mornings.

A trough sinking south into the Upper Midwest will bring chances for
scattered showers and thunderstorms mainly Sunday through Tuesday
(PoPs right now are only 20-40%). The trough is progged to interact
with the remnants of a tropical system over the Deep South, causing
it to stall out over the Upper Mississippi Valley and Western Great
Lakes. However, the chance for widespread heavy rain is low because
the trough is weak and the tropical air mass (high PWATs) is
forecast to stay well to the south and southeast of E Iowa/NW
Illinois. Uttech

&&

.AVIATION...(For the 06Z TAFS through 06Z Wednesday Night)
ISSUED AT 1152 PM CDT Tue Aug 22 2017

Surface high pressure settling into the Midwest under northwest
flow aloft will result in VFR conditions through the forecast
period.

&&

.DVN WATCHES/WARNINGS/ADVISORIES...
IA...NONE.
IL...NONE.
MO...NONE.
&&

$$

SYNOPSIS...Sheets
SHORT TERM...Sheets
LONG TERM...Uttech
AVIATION...Wolf

National Weather Service Weather Forecast Office