Coralville, Iowa 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

556
FXUS63 KDVN 141727
AFDDVN

Area Forecast Discussion
National Weather Service Quad Cities IA IL
1227 PM CDT Sun Jun 14 2026

.KEY MESSAGES...

- Several cold fronts pushing down across the region will make
  for seasonally cooler air across the area for much of the week
  ahead with highs in the 70s to low 80s, and lows in 50s to
  low 60s.

- There may be a few showers and thunderstorms on Tuesday but
  the next significant chance for showers and thunderstorms
  still appears to be on Wednesday as wave energy arrives in
  northwest flow aloft.

&&

.SHORT TERM /THROUGH MONDAY NIGHT/...
Issued at 150 AM CDT Sun Jun 14 2026

Water vapor imagery shows an upper level trough oriented east-west
across the northern Plains and Upper Midwest, with convection draped
along a slow-moving cold front from the Great Lakes through the
central Plains. As of 1 AM, this front has passed through the CWA,
leaving behind isolated post-frontal showers east of a line from
Dubuque to Ottumwa. These showers will continue moving east through
the early morning hours as this trough scoops across the Upper
midwest, eventually exiting the CWA by 8 AM. Following their
passage, northwesterly flow will take hold, leading to a cool and
breezy day. Lows this morning are expected in the mid to upper 50s
following cold advection behind the front. Highs will reach into the
low to mid 70s despite strong mixing, and may be further limited by
a band of scattered to broken diurnal cumulus during peak heating.
In addition, strong mixing will support northwesterly surface winds
of 10-20 mph, with gusts up to 25-30 mph, during the day.

Past this evening, the story turns to multiple upper level
shortwaves embedded in the northwesterly flow. The first of these is
expected late tonight into early Monday morning, though limited
moisture return given the northwesterly regime will keep any
rainfall chances at/near zero. This cold reinforcement overnight,
coupled with clear skies and weak winds, will allow lows overnight
into Monday morning to drop into the low 50s, with some areas
dipping into the upper 40s. Otherwise, another cool but pleasant day
is expected Monday, with the main difference from Sunday being not
as breezy. A second shortwave will pass through Monday afternoon and
evening, though once again will be dry given the lack of abundant
moisture.

&&

.LONG TERM /TUESDAY THROUGH SATURDAY/...
Issued at 150 AM CDT Sun Jun 14 2026

The beginning of the extended period, similar to the end of the
short term, is marked by the passage of several shortwaves embedded
in the upper level flow, with the next on Tuesday. While moisture
will be difficult to come by, with IVT tracks pointing to extended
travel from the Hudson Bay or the Gulf, there is a chance for light
rainfall, with a 65% chance of being less than 0.25 inches.

Following the low chances of rain on Tuesday, Wednesday brings
higher chances for not only rain, but also severe thunderstorms as a
stronger shortwave moves through the flow. Ahead of this shortwave,
strong southerly flow will advect moisture into the central and
northern Plains before moving eastward ahead of the shortwave. With
sustained northwesterly flow, some questions remain in how much
moisture advection will be possible, though the majority of
deterministic models suggest that moisture will not be an issue.
This, coupled with favorable mid- and low-level jet dynamics,
suggests that if there is enough instability, severe thunderstorms
could be possible. Greater clarity over the next several days,
especially with regard to moisture and instability, will help
establish the potential with this system.

Once this shortwave moves through, a quieter period is in store
through the end of the week as low level ridging sets up to the
south of the CWA. This will block moisture from the Gulf for a few
days before some moisture makes its way northward by Saturday, with
this being the next potential period for rain.

&&

.AVIATION /18Z TAFS THROUGH 18Z MONDAY/...
Issued at 1220 PM CDT Sun Jun 14 2026

VFR expected today into Monday with breezy NW winds (gusting up
to 25 kts) this afternoon into the early evening before
subsiding. Stratocumulus clouds between 4000-6000 ft AGL will
move across the area (north to south) through the early to mid
afternoon, with coverage decreasing thereafter.

&&

.DVN WATCHES/WARNINGS/ADVISORIES...
IA...None.
IL...None.
MO...None.

&&

$$

SHORT TERM...Ellingworth
LONG TERM...Ellingworth
AVIATION...Uttech