Chadron, Nebraska 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

974
FXUS65 KCYS 041120
AFDCYS

Area Forecast Discussion
National Weather Service Cheyenne WY
520 AM MDT Tue Aug 4 2026

.KEY MESSAGES...

- A cool airmass will descend over the Intermountain West for
  cooler temperatures Tuesday.

- Warming resumes Wednesday as a ridge builds back in, with
  similar temperatures next weekend as this past weekend.

&&

.SHORT TERM /THROUGH TONIGHT/...
Issued at 1221 AM MDT Tue Aug 4 2026

What a difference a day makes as we will enjoy a day that is not
sweltering as a cooler airmass settles in behind the passage of a
cold front that dove south across the CWA on Monday. Expect highs
today to only top out in the 70s, with a few 80s across our far west
forecast zones. These cooler temperatures will be short-lived
though, as we will heat up once again starting Wednesday with a
return of ridging, more on that in the long term discussion. In the
meantime, we will stay in under a weak upper level trough, with
zonal flow overhead. This set-up will not only keep our temperatures
cooler, but our minimum RH values will be slightly higher then what
we have been seeing in previous days. So, this afternoon`s RH values
will only dip into the 30s and 40s primarily east of the I-25
corridor, putting an end to the critical fire weather concerns.
However, out west in Carbon County, minimum RH values will dip into
the 10s, bringing continued elevated fire weather concerns to this
portion of the CWA. One other thing, due to smoke that has been
plaguing the area from wildfires to our west, the Wyoming Air
Quality Division has an Air Quality Alert (AQA) in place through
the Tuesday morning across southeast Wyoming, thereafter the
smoke will begin to clear out, allowing an end to the alert.

&&

.LONG TERM /WEDNESDAY THROUGH MONDAY/...
Issued at 212 PM MDT Mon Aug 3 2026

The long term will be largely uneventful as we see high pressure
building back in, bringing warm and dry weather alongside a
risk of critical fire weather conditions. Wednesday starts with
some lingering precipitation in the Nebraska Panhandle as the
trough is departing the region, but this will be quickly
escaping and bringing in a dry spell that will last through the
remainder of the long term. That being said, Wednesday should
still be quite a fair late summer day, with temperatures in the
70`s to 80`s across our area thanks to the cold front that`s
currently passing over the region. But a high pressure ridge
will build back in, dominating into the weekend with highs
gradually rising back into the 90`s to triple digits for most of
our CWA outside of the mountains. Along with this will come dry
air, with daytime relative humidity values into the single
digit to teens each day. Because of this, expect an elevated
fire weather environment, with the potential to become critical
with any increase in winds. This could be notably possible over
the weekend when the ridge flattens due to troughing to our
north, causing an enhanced pressure gradient primarily for our
northern zones bringing breezy winds. Otherwise, summer has no
intention of leaving early as our streak of warm temperatures
continues.

&&

.AVIATION /12Z TAFS THROUGH 12Z WEDNESDAY/...
Issued at 520 AM MDT Tue Aug 4 2026

VFR conditions will prevail across all terminals through this TAF
period even though there is copious amounts of smoke in the region
from fires to our west. Most of this smoke should remain aloft and
not impact CIGs and/or VIS, which would reduce flight categories.
Satellite imagery shows lower CIGs moving in due to low level winds
pumping in moisture and may impact KCYS and the Nebraska Terminals;
however, CIGs should remain above 5K feet. Winds will generally
remain less than 10 knots across all sites, except KLAR where SE
gusts to 25 knots are possible by this afternoon into the evening
hours.

&&

.CYS WATCHES/WARNINGS/ADVISORIES...
WY...Air Quality Alert until 11 AM MDT this morning for WYZ101>119.
NE...None.

&&

$$

SHORT TERM...RZ
LONG TERM...CG
AVIATION...RZ