Columbus, Nebraska 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

278
FXUS63 KOAX 081032
AFDOAX

Area Forecast Discussion
National Weather Service Omaha/Valley NE
532 AM CDT Tue Jul 8 2025

.KEY MESSAGES...

- Showers and thunderstorms associated with a departing complex
  will gradually taper off through the morning hours.

- Additional storm chances persist through the work week, with
  the greatest potential for severe weather and excessive
  rainfall on Thursday.

- A trend toward drier and milder conditions is expected next
  weekend.

&&

.DISCUSSION...
Issued at 246 AM CDT Tue Jul 8 2025

Short Term (Today and Tomorrow)

As of 2 AM, MRMS composite reflectivity displays last night`s MCS
pushing into northeast KS and northwest MO, leaving behind gradually
decaying showers and thunderstorms across the area. Zooming out,
water vapor imagery this morning displays a ridge centered over the
Four Corners region, leaving much of our area in northwesterly flow
aloft with a series of shortwave disturbances riding the ridge and
pushing into the area through the remainder of the work week.

Showers will continue to taper off through the morning with skies
clearing into the afternoon. This should allow afternoon highs to
climb into the mid to upper 80s. We can`t rule out a few diurnally
driven showers later today, though this chance remains low (< 20%),
given how overworked the environment is from the overnight MCS.

Wednesday will see similar conditions, with highs expected to top
out in the upper 80s to low 90s. An approaching shortwave
disturbance and associated vorticity maxima will approach the area
into the evening, bringing our next chance for precipitation (PoPs
20-35%). Storms are expected to initiate to our west along an
associated surface trough, with more than sufficient instability and
modest shear, bringing the potential for organized storms capable of
damaging winds and hail. However, shear gradually weakens as the
storms progress eastward towards our area. The main question that
remains is how storms will hold together as they progress into our
area, with the potential for them congealing into another MCS. The
SPC currently clips northeast NE with a marginal risk (level 1 of 5)
for severe weather.

Long Term (Thursday and Beyond)

Thursday is shaping up to be a day of active weather as a two potent
shortwave disturbance rounds the ridge and interact with each other
as they push from the northern Rockies into the northern Plains.
Ahead of an associated surface trough, strong southerly low-level
flow will help to usher in moisture, with a plume of 70+ dewpoints
excepted across the region. Additionally, steep mid-level lapse
rates and a tongue of very strong instability is expected to pull
into the area. Questions still remain with this setup and the
expected storm mode, though severe weather potential will be
something to keep an eye on. Additionally, the setup is looking
favorable for excessive rainfall given PWAT values pushing near 2".
PoPs currently peak at 45-60% late Thursday night before gradually
tapering off through Friday. The majority of the CWA is in both a
slight risk (level 2 of 5) for severe weather from SPC and
a slight risk for excessive rainfall (level 2 of 4) from WPC.

A brief cool down is expected Friday and Saturday on the back side
of the departing system, with highs taking a subtle drop into the
upper 70s to low 80s. PoPs taper off through the weekend as we
remain in zonal to northwesterly flow aloft with little to no
disturbances sliding by. High temperatures are expected to rebound
to the upper 80s by the end of the weekend.

&&

.AVIATION /12Z TAFS THROUGH 12Z WEDNESDAY/...
Issued at 528 AM CDT Tue Jul 8 2025

Patchy fog and low-level stratus capable of MVFR conditions
will be possible this morning, although this possibility has not
been included in the TAFs at this time due to the limited
coverage. Amendments will be made if needed. Otherwise, VFR
conditions are expected through the remainder of the period.
Winds will remain calm, with the direction varying. Scattered,
high clouds will move in this afternoon.

&&

.OAX WATCHES/WARNINGS/ADVISORIES...
NE...None.
IA...None.

&&

$$

DISCUSSION...Wood
AVIATION...Wood