Forecast Discussion
NWS Omaha/Valley, NE

583
FXUS63 KOAX 311723
AFDOAX

Area Forecast Discussion
National Weather Service Omaha/Valley NE
1223 PM CDT Sun May 31 2026

.KEY MESSAGES...

- Additional storms expected overnight tonight into Sunday.
  Potential for isolated damaging winds and large hail.

- A summer-like pattern sets up next week keeping warm and
  muggy weather in place with additional daily chances for
  showers and thunderstorms throughout the week.

- Potential for hotter temperatures next weekend and beyond,
  with daily chances for showers and storms continuing through
  the weekend.

&&

.DISCUSSION...
Issued at 1022 PM CDT Sat May 30 2026

A line of storms has moved into southeast Nebraska this
evening, associated with a trough axis stretching from Oregon
east across Nebraska. These storms are moving into an
environment with weaker shear though with sufficient elevated
instability for hail up to quarter-size. 00Z CAMs have come in
predicting this line will mostly dissipate over the next few
hours, with redevelopment as the trough axis arrives closer to
1-3am over northeast Kansas/southeast Nebraska. Again, we could
see some damaging wind and hail threat, but with limited shear
the severe weather potential should remain low.

Storms should mostly clear our area after daybreak on Sunday.
Mid-level dry air advecting in should limit coverage of
additional showers and storms through the day on Sunday as we
stay in a fairly baroclinic pattern near the nose of a jet
streak stretching from central California east into western
Nebraska. This jet streak shifts north on Monday as we start to
see ridging build up over the Central US. As high pressure
builds we see precip chances drop off and clearing skies on
Monday. Moisture streams up the west side of the ridge,
generating showers and storms across western Nebraska and Kansas
on Monday evening, developing into an MCS. Confidence is low on
how this convective complex will evolve and track this far out,
but we could see some potential storms overnight Monday night
into early Tuesday if it tracks east into our area.

As we go into next week, we see the west-east trough axis from
Sunday cut off, holding in place and spinning, forcing ridge
development to shift eastward into midweek. Tuesday, the evening
storm development sets up across Central Kansas and Nebraska
with potential for an overnight MCS tracking into our area from
this development. Wednesday-Thursday the ridge shifts far enough
east that the belt of moisture sets up over our area. This means
afternoon/evening storm development over our area.

Toward the end of the week we see a potent jet streak and
upper-level trough push into the PacNW. This finally forces
troughing over the Intermountain West eastward, dampening the
ridge and forcing it eastward over the Tennessee Valley. We`ve
seen an interesting shift in the pattern going into next weekend
from previous forecasts, now seeing ridging set up farther north
going into next weekend with southwesterly flow setting up over
the Central Plains. If this occurs, while we will still see
significant warming with temperatures likely climbing into at
least the upper 80s-low 90s, storm chances will continue going
into next weekend with some potential for severe weather.

&&

.AVIATION /18Z TAFS THROUGH 18Z MONDAY/...
Issued at 1219 PM CDT Sun May 31 2026

VFR conditions have returned to the area as low clouds have
pushed northeast. Expect these conditions to persist with the
exception of a chance at reduced visibility during heavy rain
with the threat of thunderstorms at KOMA between 03Z and 05Z
Monday. Expect the other two TAF sites to remain dry.

Southerly winds will become light and variable overnight.

&&

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

&&

$$

DISCUSSION...McCoy
AVIATION...Nicolaisen

NWS OAX Office Area Forecast Discussion

Forecast Discussion
NWS Hastings, NE

835
FXUS63 KGID 311751
AFDGID

Area Forecast Discussion
National Weather Service Hastings NE
1251 PM CDT Sun May 31 2026

...AVIATION UPDATE...

.KEY MESSAGES...

- Scattered showers/storms continue overnight through the mid morning
  hours. Small hail is possible in the strongest storms.

- Highs in the upper 70s to 80s on today with the best chances
  for afternoon/evening showers/storms east of the forecast
  area.

- Scattered thunderstorm chances return Monday evening/night. A
  few of these storms could be strong-severe. Off and on
  chances for storms continue through the end of the forecast
  period with highs generally in the 80s.

&&

.UPDATE...
Issued at 1245 AM CDT Sun May 31 2026

Today...

The band of thunderstorms that brought damaging wind gusts to
southwestern portions of the area has exited northeastern portions
of the area. Behind this band, two clusters of storms are ongoing
over the area. The first is across Osborne and Mitchel counties
in Kansas where weak shear is keeping storms sub-severe despite
CAPE values of 2000 J/Kg. Storms will remain pulse-y with cores
quickly strengthening and weakening. Small hail is possible in
these storms. Another concern with these storms is continued
locally heavy rainfall given the potential for multiple rounds
of storms (training) with PWAT values around 1.5". Over time
this cluster will gradually shift east/northeast out of the
area. Another cluster of showers/storms is developing across
Lincoln/Custer/Dawson counties. These showers/storms are
expected to shift east across portions of Nebraska through the
early morning hours. Lower instability over Nebraska should
limit the strength of these storms, though a stronger core could
briefly produce small hail. These showers/storms are expected
to move east of the forecast area by the mid-late morning hours
(~10am).

Skies clear from west to east during the daytime hours, though low
stratus may linger across eastern portions of the area into the
afternoon. Winds start the day southerly but shift to the
west/southwest behind a dryline. Highs today will be in the upper
70s to upper 80s warmest in the west where skies clear the soonest.
Models indicate that the best chances for precipitation are east of
the area, closer to the NE/IA border. If a storm were to form in the
area this afternoon, it would be most likely to impact locations
along Highway 81, though the forecast for Sunday afternoon/evening
is currently dry.

Southwesterly flow sits over the area on Monday with a low over the
west/Rockies and a ridge over the Midwest. Highs on Monday climb
into the 80s under partly cloudy skies. The next disturbance
associated with western troughing brings the next chance for rain to
the area. Storms are favored to develop over Western NE/KS and move
into the area during the evening hours. Of note/focus is the
potential for an MCS to develop across portions of central/northern
Kansas which would carry an overall higher threat for damaging wind
gusts. Details will become clearer over the next 24-36 hours as we
move deeper into the range of Hi-res model guidance. Otherwise the
forecast remains on track with highs generally in the 80s and off an
on chances for showers/storms (mainly evening-overnight). Details on
any severe chances will be come clearer as we get closer in time.

&&

.DISCUSSION...
Issued at 242 PM CDT Sat May 30 2026

Looks like it will be fairly active across the local area this
evening as CU is just starting to get agitated along the
dryline across southwestern Kansas. Despite fairly marginal
shear, this CU will be moving into an area of increased (and
very strong) instability which will help fuel explosive growth
as they track northward towards the local area. This will most
likely favor some large hail and strong wind gust potential as
the storms expand and merge, but if a few storms are able to
remain discrete, an isolated tornado (as advertised by SPC) will
also be possible across our local area.

This activity across southwestern Kansas this afternoon is only
one area of concern, and a separate area of convection is
anticipated to develop across the high plains to our west in
response to an upper level low rotating across northern
Colorado. Eventually, these two clusters of storms may merge
across the local area by mid to late evening as it lifts
northeast of the area overnight. As these lines of storms merge,
the main threat should transition to strong winds late tonight,
with some possible sub-severe redevelopment hinted at in its
wake during the pre-dawn hours Sunday.

Thereafter...the main upper level low will then lift north
toward Montana by Sunday afternoon, with a weak west
southwesterly flow steering addition weak disturbances across
the local area as we go through the upcoming work week. While
Sunday afternoon/evening looks fairly quiet, this will result in
periodic, mainly evening/night-time chances for thunderstorms
across the local area, along with seasonably warm temperatures
through the end of the extended periods. Overall, the best shot
for some severe weather appears to be with the late afternoon
and evening convection today, but cannot rule out more isolated
chances for strong or severe storms later in the period.

&&

.AVIATION /18Z TAFS THROUGH 18Z MONDAY/...
Issued at 1230 PM CDT Sun May 31 2026

For KGRI/KEAR Airports:

Prevailing VFR conditions anticipated through the period.

Expect the BKN cloud deck near 5KFT this afternoon to continue
to erode over the next couple of hours, with mostly sunny skies
anticipated for the remainder of the afternoon. Could see some
mid level clouds near 15 KFT spill across the area during the
overnight and morning hours Monday, but these should have little
impact. VSBYs are anticipated to be good and winds less than 10
KTS through the period.

&&

.GID WATCHES/WARNINGS/ADVISORIES...
NE...None.
KS...None.

&&

$$

UPDATE...Davis
DISCUSSION...Rossi
AVIATION...Rossi

NWS GID Office Area Forecast Discussion