Quasqueton, Iowa Weather Forecast Discussion

002
FXUS63 KDVN 271920
AFDDVN
Area Forecast Discussion
National Weather Service Quad Cities IA IL
220 PM CDT Sat Sep 27 2025
.KEY MESSAGES...
- A prolonged period of dry weather will be seen through next
  week with not much of a cool down.
&&
.SHORT TERM /THROUGH SUNDAY/...
Issued at 218 PM CDT Sat Sep 27 2025
Deep mixing has allowed wind gusts of up to 20 mph to develop across
the area ahead of the approaching front. Winds will diminish with
sunset.
Tonight into Sunday the front will move into the area and generally
stall south of I-80 before dissipating. The low levels of the
atmosphere are quite dry so only some mid and high level clouds will
mark its passing.
The dryness of the air should allow temperatures to drop behind the
front tonight while remaining elevated ahead of it. Full sunshine
for Sunday will result in above normal temperatures similar or just
slightly cooler than Saturday.
&&
.LONG TERM /SUNDAY NIGHT THROUGH FRIDAY/...
Issued at 218 PM CDT Sat Sep 27 2025
Sunday night through Saturday
Assessment...A near certainty (>95%) of above normal temperatures
and no rain.
The thermal ridge will remain across the area for the first part of
the work week before retrograding into the Plains. Monday and
Tuesday look to be the warmest days. With record highs in the 90s
both days, no records are expected to be broken but we may be within
5 degrees of them.
As the thermal ridge retrogrades into the Plains, a blocking pattern
will develop along the east coast with high pressure over New
England and the mid-Atlantic with Humberto and eventually Imelda
(per NHC forecasts) off the southeast coast. The blocking pattern
will stall the eastward progression of systems across the CONUS for
much of the coming week until a trof kicks both tropical systems out
to sea.
With low level easterly to east southeast flow across the area
through Wednesday night, larger than normal diurnal temperature
swings should be seen due to the dry air and negative feedbacks from
the dry ground.
From the large scale synoptic picture, the potential is there for
high level clouds from the tropical systems to move around the west
edge of the high and potentially into the Midwest. If this occurs,
the opacity of the high clouds will dictate how much of a cool down
occurs late next week.
&&
.AVIATION /18Z TAFS THROUGH 18Z SUNDAY/...
Issued at 1215 PM CDT Sat Sep 27 2025
Frontal passage after 06z/28 across eastern Iowa and northern
Illinois will shift winds around to the north and northeast by
12z/28. Outside of a few high level clouds and winds generally
under 10 knots, VFR conditions will be seen.
&&
.CLIMATE...
Issued at 233 AM CDT Thu Sep 25 2025
The latest 8-14 day temperature outlook from the Climate
Prediction Center shows very high probabilities (70%) of above
normal temperatures for the Oct 2nd to Oct 8th timeframe. Normal
highs for this period are in the upper 60s/lower 70s and normal
lows are in the mid to upper 40s. While above normal
temperatures are likely, the humidity levels will be tolerable.
&&
.DVN WATCHES/WARNINGS/ADVISORIES...
IA...None.
IL...None.
MO...None.
&&
$$
SHORT TERM...08
LONG TERM...08
AVIATION...08
CLIMATE...Gross

NWS DVN Office Area Forecast Discussion