206
FXUS63 KDVN 311921
AFDDVN

Area Forecast Discussion
National Weather Service Quad Cities IA IL
221 PM CDT Sat Oct 31 2026

.KEY MESSAGES...

- An active weather pattern early next week will bring rain and
  breezy conditions to the region, including on Election Day.

&&

.SHORT TERM /THROUGH SUNDAY/...
Issued at 215 PM CDT Sat Oct 31 2026

A weak mid-level shortwave trough will drift across the Mid to
Upper Mississippi Valley region today through Sunday. This
system may result in occasional patchy light rain or sprinkles
at times. However, forcing for ascent will be limited and
rainfall amounts will remain light with only a trace to possibly
a few hundredths anticipated. Temperatures this evening for
trick-or-treat activities will be holding in the low/mid 50s
north to upper 50s/low 60s central and south. For Sunday, a
seasonably mild day is expected with highs in the mid 60s for
most areas.

&&

.LONG TERM /SUNDAY NIGHT THROUGH FRIDAY/...
Issued at 215 PM CDT Sat Oct 31 2026

Forecast focus remains on the evolution of a longwave trough early
next week into Wednesday. A synoptically driven mid-latitude system
is progged with a Colorado low deepening as it tracks into the Great
Plains on Monday. Impressive moisture transport ahead of this
system is expected with PW values around 1.5" or near the 99th
percentile and a daily max for Nov 2nd. NBM precip chances ramp
up Monday PM into Tuesday (50-90%) as the upper low pushes out
of the Southern Rockies into the Central Plains. Well above
normal highs in the mid 60s/low 70s are forecast for
Monday/Tuesday, which is still 5-10 degrees below records. It
will also be breezy with southeast to south winds gusting 20-30
mph. For rainfall potential, the NBM 72-hr exceedance
probabilities of 1" ending 12z Thursday remain around 50-80% for
most locations.

Wednesday onward, behind the main synoptic system there will be
periodic lower end chances for rain, but amounts should be
under a quarter inch. Temperatures will be slightly cooler with
highs in the 60s and lows in the 40s, albeit still above normal
for early November.

&&

.AVIATION /18Z TAFS THROUGH 18Z SUNDAY/...
Issued at 1145 AM CDT Sat Oct 31 2026

Occasional patchy light rain or sprinkles are possible today,
but with little in the way of measurable precipitation. Overcast
skies (ceilings between 4000-10000 ft AGL) can be expected
through tonight into Sunday AM, with prevailing VFR anticipated.

&&

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

&&

$$

SHORT TERM...Uttech
LONG TERM...Gross/ZU
AVIATION...Uttech