242
FXUS63 KGID 201151
AFDGID

Area Forecast Discussion
National Weather Service Hastings NE
651 AM CDT Wed Aug 20 2025

...AVIATION UPDATE...

.KEY MESSAGES...

- Some patchy dense fog is expected to develop across the local
  area by daybreak and then rapidly dissipate by mid-morning.
  Visibilities could fall as low as 1/2 a mile or less in
  spots.

- Hot again this afternoon and Thursday afternoon with heat
  index values climbing into the middle to upper 90s. With light
  winds again today, there will be little relief from the heat
  when venturing outdoors.

- A few pop up showers and an isolated thunderstorm or two will
  be possible across the local area this afternoon, especially
  for areas east of Highway 281. Wind gusts to 50 mph could be
  possible with the strongest storms. Most locations will remain
  dry.

- Additional thunderstorm chances (10-30%) arrive late Thursday
  night into Friday morning, with better chances (30-60%) for
  the entire area Friday night into Saturday morning.

- Noticably cooler weather arrives late in the weekend and will
  likely continue through much of next week.

&&

.DISCUSSION...
Issued at 345 AM CDT Wed Aug 20 2025

Mostly clear skies and light winds once again persisted across
the local area overnight. Latest satellite imagery indicates
some lower clouds and fog are trying to develop in spots, and
expect to see some patchy dense fog development by daybreak.
Latest HRRR continues to indicate there will be at least pockets
of significantly reduced visibilities, but dense fog will
likely not be widespread or last past mid-morning. Thereafter,
the focus will again return to sunny skies and uncomfortably hot
conditions across the local area. While heat index values may
not reach 100 this afternoon as dewpoints are a bit lower than
the past few days, very light winds will provide little relief
from the heat. In addition, there remains some signals in CAMs
that a few spotty afternoon showers and thunderstorms will be
possible, but most of the area will be dry.

For tonight, could again see some patchy fog development across
the local area with clear skies and light winds, but did not
introduce fog into the forecast for Thursday morning as the
focus appears to be further east where the richer dewpoints will
reside. Additionally, cannot completely rule out a pop up shower
or thunderstorm Thursday afternoon, but again, signals are
weaker in model data and opted to keep the forecast dry Thursday
as the vast majority of the area will be dry. This should change
late Thursday night or early Friday morning as a cold front
arrives from the north. This front should push across the area
on Friday, not only helping to moderate temperatures, but also
brining a slightly better chance for precipitation back to the
local area.

Thereafter...the upper level pattern will begin to shift, with
heights aloft falling as northwesterly flow becomes predominant
across the plains. This should result in the return of more
periodic chances for precip starting Friday night, and
continuing off and on in spots (mostly during the evening and
overnight periods) into early next week. At the same time,
temperatures should stay below normal, with a nice stretch of
afternoons in the 70s expected across the local area beginning
Sunday afternoon.

&&

.AVIATION /12Z TAFS THROUGH 12Z THURSDAY/...
Issued at 636 AM CDT Wed Aug 20 2025

For KGRI/KEAR Airports:

Mainly VFR conditions through the period although there could be
some MVFR VSBYs at KGRI for the next couple of hours with some
patchy fog. Other than the patchy fog potential this morning,
mainly clear skies through the afternoon hours along with light
winds...and only the slightest chance for a pop up shower or
weak thunderstorm during the afternoon or early evening
hours...which more than likely will not impact either terminal.
Fog potential again tonight...albeit probs look lower...so
again...mainly VFR conditions expected through the period with
light winds.

&&

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

&&

$$

DISCUSSION...Rossi
AVIATION...Rossi