237
FXUS63 KLBF 171936
AFDLBF

Area Forecast Discussion
National Weather Service North Platte NE
236 PM CDT Sun May 17 2026

.KEY MESSAGES...

- Severe weather likely afternoon and evening with an Enhanced Risk
(level 3 of 5) in place for Central to North Central Nebraska.
Hazards include damaging winds, large hail, and an isolated tornado
or two.

-A Tornado Watch has been issued until 10 pm CDT tonight for
 portions of North Central Nebraska.

- Cooler conditions are expected Monday behind a strong cold front,
with periods of rain and a brief changeover to snow possible Monday
night, mainly across north-central Nebraska.

- Additional chances for light rain return by late week into next
weekend as a more active pattern persists across the region.


&&

.SHORT TERM /THROUGH TONIGHT/...
Issued at 235 PM CDT Sun May 17 2026

Another severe weather day returns this afternoon into tonight. An
strong upper level trough is moving across western CONUS where a
shortwave ejects southwesterly flow into eastern NE. There still
remains some uncertainty on thunderstorm coverage, but as it stands
there is at least moderate to high (60 - 80%) confidence of seeing
scattered strong to severe thunderstorms in east north central
Nebraska along the SD border. A cold front has initiated and pushed
a convective line eastward along the SD/NE border bringing a
damaging wind threat. The main area of concern will be a 45 degree
enhanced risk line from the CO border near Grant to the SD border
near Butte early this evening where CAMS have been showing a trend
of eastern progression along a secondary cold front pushing in from
the northwest. The environment is quite volatile where MUCAPE
ranges from 2000 J/kg to 2500 J/kg. Mid-level lapse rates will
remain steep through the afternoon to early evening with 0 to 6
km shear increasing to 50+ kts. There as been some uncertainty
over the potential of storms developing back westward along the
panhandle and southwest NE but will be closely monitored for
upcoming developments. Additionally, main threats with any
severe storms will be the possibility for damaging winds in
excess of 75 mph, large hail (2.5"+) and a strong tornado or
two. A Tornado Watch has been issued until 10 pm CDT for north
east Nebraska. Severe storms are expected to clear out quickly
late tonight.


&&

.LONG TERM /MONDAY THROUGH SATURDAY/...
Issued at 235 PM CDT Sun May 17 2026

Monday, the longwave trough will settle across the central Rockies
into the Four Corners region. Ahead of this system, a shortwave
trough will move across western Nebraska during the daytime hours.
Strong 700-850mb cold air advection will spread into most of the
region through Monday afternoon, leading to a sharp cold front
through the area. Behind the front, highs will remain in the 40s
across north-central Nebraska, with mid 50s farther south.
Currently, the SPC Day 2 outlook moves the greatest thunderstorm and
severe threat to the east and southeast of the area, though some
thunderstorm risk is still possible for the northeast counties as
some lingering elevated instability remains. Behind the system,
stronger synoptic lift will persist across western Nebraska into
Monday evening. While severe weather is not expected on the cool
side of the system, a steadier rainfall may develop across portions
of the area. 850mb temperatures will fall around 0C with lows in the
upper 20s to low 30s, which will support the potential for a brief
transition to snow. Currently thinking the duration of this
changeover will be quite limited. Since snow in late May is not very
common for the area, folks should still pay attention, as some minor
impacts could occur.

Tuesday into the end of the week, the main storm system will finally
move off to the east of the region with mid to upper level heights
building fairly quickly behind it. Zonal mid level flow will become
established through mid week. More active weather could impact the
area Wednesday through the end of the week, though these systems
continue to look weaker compared to the current storm system.
Precipitation chances will increase from Thursday through the
weekend though, only light rain events appear the most probable at
this time. Temperatures will remain on the cooler side Tuesday into
Wednesday. Temperatures will moderate some, with a return to
seasonable highs by Thursday and slightly above normal temperatures
by the following weekend.

&&

.AVIATION /18Z TAFS THROUGH 18Z MONDAY/...
Issued at 1236 PM CDT Sun May 17 2026

Degraded aviation conditions are likely over the next 24 hours due
to widespread low stratus and periods of rain and thunderstorms.
Currently, thunderstorms are impacting the KVTN terminal with heavy
rainfall, gusty winds, and frequent lightning. This activity will
move east of the terminal over the next couple of hours, though
another round of thunderstorms may develop later this afternoon.
Near the KLBF terminal, IFR to LIFR conditions should gradually
improve over the next few hours, though isolated showers remain
possible. Later tonight, another area of thunderstorms may approach
from the southwest, though most guidance weakens this activity
before it reaches the terminal. Toward the end of the TAF period,
drier conditions are expected to return across much of the area.

&&

.LBF WATCHES/WARNINGS/ADVISORIES...
None.

&&

$$

SHORT TERM...MRS
LONG TERM...Labenz
AVIATION...Labenz

NWS LBF Office Area Forecast Discussion