897
FXUS63 KGID 041155
AFDGID

Area Forecast Discussion
National Weather Service Hastings NE
655 AM CDT Fri Sep 4 2026

.KEY MESSAGES...

- Hot days ahead Friday and Saturday with Heat Advisory in
  effect until 8 PM Saturday. Heat indices will be in the upper
  90s-100s, peaking as high as 110 in the Heat Advisory.

- Isolated storm chances (15-20%) return Friday afternoon, with
  off-and-on chances remaining into next week.

- Above average temperatures, in the 80s-90s, continue through
  next week though cooler than recent highs.

&&

.UPDATE...
Issued at 336 AM CDT Fri Sep 4 2026

Persistent ridging over our area brings another hot day with
high temperatures reaching into the mid 90s-mid 100s. A Heat
Advisory remains in effect until 8 PM Saturday along and
southeast of a line extending from Harlan County to Polk County.
Heat indices in this advisory could peak as high as 110 degrees
on Friday and 106 degrees on Saturday. Areas outside of the
heat advisory will still reach heat indices in the upper 90s-low
100s through Saturday.

Storms chances return Friday afternoon though odds remain relatively
low (15-20%). The HRRR and RRFS are more aggressive with storm
potential but other models keep the area dry through the overnight
hours Friday. Synoptic support for storms is very limited, any
initiation will come from mesoscale interactions which keeps
confidence is storm formation low. Off-and-on storm chances (20-
30%), favoring the overnight hours, remain in place through the
weekend and into next week.

The large ridging pattern finally starts to show some signs of
change beginning Sunday and continuing through the week. The upper
level low, currently over the Northwest, pushes further into
the continent which will start to lower the upper level heights
over our area. At the surface we will start to get some reprieve
from the heat though temps will remain above average. Sunday
will see some slight cooling though highs remain in the low
upper 80s-90s with our southern areas still reaching the low
100s. Highs next week start to come down slowly but stay steady
in the 80s-low 90s, though southern portions could still flirt
with the triple digits.

&&

.DISCUSSION...
Issued at 1238 PM CDT Thu Sep 3 2026

Our persistent upper-level ridge and surface high pressure is
expected to retrograde westward back over the Central Plains
over the next 48 hours, keeping us in high heat through Labor
Day. The current Heat Advisory remains in effect through
Saturday evening, and has been expanded northwestward slightly.
The hottest locations in our CWA will be the southeastern
counties, where afternoon and early evening heat indices will
reach up to ~107 F, with 12z HREF indicating 60 - 80% chances
for heat indices to top 105 F. Overnight lows in the Heat
Advisory zone will offer little relief only getting down to the
low- to-mid 70s F. Heat indices even for our far northwestern
counties in greater central Nebraska will reach into the upper
90s, and these portions of the CWA still only have 10 - 20%
chances for overnight lows to bottom out ~65 F.

Dry conditions are favored through tomorrow (FRI) evening.
Friday evening ~5:00 PM, a few isolated thunderstorms will be
possible (12z HREF probabilities 10 - 20% chances), primarily
west of Highway 183 and north of Kearney. A couple storms also
look to be possible for our counties along the KS / NE state
line as southeasterly surface flow with relatively higher
dewpoints and a strengthening 850-hPa jet overlap as the ridge /
surface high pushes back west. The 12z RRFS and ARW appear the
most aggressive with these storms. However, confidence is lower
(10%) in these storms, but it will be worth watching. The best
chances for precip do look to hold west of North Platte`s CWA,
but a heaviest-precip scenario (i.e. 95th percentile totals)
would bring very localized totals of 0.5 - 0.75 in. Highest
chances to realize these totals would be west of Highway 183.
Regardless, the likeliest scenario is that the majority stay
dry, and those that do receive rain get nothing more than 0.1
in.

Surface winds today will continue at 10 - 20 mph, wobbling from
out of the SSW to SSE. Gusts today will be highest for those in
the Heat Advisory zone, offering a slight bit of relief.
Today`s gusts will top out near 25 mph. Tonight, a few of our
northwestern counties can see a brief shift to northerly winds,
but southerly flow will be the majority`s wind direction through
tonight. There is some uncertainty as to how strong tonight`s
gust can get in the Heat Advisory zone, as a surface inversion
is likely to develop but low-level winds will be strong. Some
mixing would allow relatively breezier conditions to continue
overnight in the Heat Advisory zone. Tomorrow (FRI) afternoon, a
shift to more southeasterly flow at 10 - 15 mph will help bring
in slightly higher moisture content for our potential storms.
Beyond FRI, calmer south-southeasterly flow is expected for SAT
and SUN. MON, however, looks to be the windiest day upcoming,
with 15 - 25 mph sustained winds and 13z NBM probabilities of
gusts >35 mph reaching ~60%.

&&

.AVIATION /12Z TAFS THROUGH 12Z SATURDAY/...
Issued at 637 AM CDT Fri Sep 4 2026

For KGRI/KEAR Airports:

VFR conditions are expected through the TAF period. Light
southerly winds (around 5-10 kts) are expected through the
morning. During the afternoon hours southwesterly winds
strengthen to around 10kts. Winds gust to 18kts at KEAR and an
occasional gust of 15kts may occur at KGRI. Clouds will remain
sparse in the morning before scattered mid-level clouds move in
over the afternoon hours. Cloud bases are expected to remain
above 8000ft through the TAF period. Additionally, there are low
chances (10-20%) of storms in central Nebraska over the
afternoon/evening hours that could track over KEAR and KGRI.
Confidence in storm formation and location is too low to mention
in the TAF at this time.




&&

.CLIMATE...
Issued at 1240 PM CDT Wed Sep 3 2026

Potential Record "Warmest Low" Temperatures This Week

Grand Island (KGRI):
Fri, Sept 4th: 72 (1954,1912,1899)
Sat, Sept 5th: 75 (1945)

Hastings (KHSI):
Fri, Sept 4th: 72 (2015,1925)
Sat, Sept 5th: 74 (1912)

&&

.GID WATCHES/WARNINGS/ADVISORIES...
NE...Heat Advisory until 8 PM CDT Saturday for NEZ049-063-064-
     074>077-083>087.
KS...Heat Advisory until 8 PM CDT Saturday for KSZ005>007-017>019.

&&

$$

UPDATE...McGrew
DISCUSSION...Began/Mangels
AVIATION...McGrew
CLIMATE...Mangels