Area Forecast Discussion
Issued by NWS Quad Cities, IA IL

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FXUS63 KDVN 231727

Area Forecast Discussion
National Weather Service Quad Cities IA IL
1227 PM CDT Wed Aug 23 2017


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


.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 18Z TAFS through 18Z Thursday Afternoon)
ISSUED AT 1227 PM CDT Wed Aug 23 2017

VFR conditions forecast through the period. High clouds may move
into the area late in the period and limit the development of MVFR
vsbys. Light easterly winds expected tomorrow, so went with VRB at
this time.




LONG TERM...Uttech
AVIATION...Gibbs is the U.S. government's official web portal to all federal, state and local government web resources and services.