704
FXUS63 KDVN 212350
AFDDVN

Area Forecast Discussion
National Weather Service Quad Cities IA IL
650 PM CDT Thu May 21 2026

...Updated for 00z Aviation...

.KEY MESSAGES...

- Aside from isolated drizzle or light rain on Friday, the end
  of the work week will feature quiet weather with temperatures
  below normal.

- Pattern change will result in increasing temperatures each day
  this weekend, bringing above normal temperatures back to the
  area on Sunday.

- A more active pattern will take shape next week, especially
  midweek and beyond. Thus, temperatures and precipitation
  chances will continue to trend upwards through the next work
  week.

&&

.SHORT TERM /THROUGH FRIDAY NIGHT/...
Issued at 223 PM CDT Thu May 21 2026

High pressure over the Great Lakes Region will keep us under weak
easterly flow tonight, with a mix of clouds and cool temperatures in
the upper 40s to low 50s. Otherwise, we will remain largely dry
through the night.

Tomorrow, the surface high will slowly start to push east, as
two waves push in from the southwest. Our forecast area will
fall between the two waves, which may help to keep us largely
dry through much of the day. Although, with light southeasterly
flow working in aloft, we will see the potential for drizzle to
light rain midday and through the afternoon as these shortwaves
pass to our northwest and southeast. The best chances to see a
drizzle or light shower will be in our east and west, with much
of the central CWA staying away from sufficient
forcing/moisture. With little forcing over the area, any showery
activity should remain isolated to widely scattered, with low
accumulation. Otherwise, it will be a quiet end to the work week
with mostly cloudy skies and temperatures increasing to around
70.

&&

.LONG TERM /SATURDAY THROUGH THURSDAY/...
Issued at 223 PM CDT Thu May 21 2026

This weekend, upper ridge builds over the eastern CONUS, inducing
upper level southwesterly flow. Flow in the llvls remains weaker
through much of Saturday, with an increase in WAA being more
noticeable on Sunday. Thus, Saturday will features temperatures near
to slightly above normal, with better WAA Sunday resulting in
temperatures around 80 throughout. In such a flow pattern, weak
disturbances will pass through the area this weekend, which may
result in a brief shower or isolated storm. Overall chances for this
remain low (about 20-30% or less), largely later Saturday into
Sunday. Any precipitation will be light, 

NWS DVN Office Area Forecast Discussion