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Alliance, Nebraska 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for Alliance NE
National Weather Service Forecast for: Alliance NE
Issued by: National Weather Service Cheyenne, WY
Updated: 3:26 pm MDT Aug 13, 2025
 
This
Afternoon
This Afternoon: Sunny and hot, with a high near 97. South wind 10 to 15 mph.
Hot

Tonight

Tonight: A 20 percent chance of showers before 9pm.  Partly cloudy, with a low around 59. South wind around 10 mph.
Slight Chance
Showers then
Mostly Clear
Thursday

Thursday: Sunny and hot, with a high near 101. West wind 5 to 10 mph.
Hot

Thursday
Night
Thursday Night: A 20 percent chance of showers and thunderstorms before midnight.  Mostly cloudy, with a low around 62. West wind 5 to 10 mph becoming south southwest after midnight.
Slight Chance
T-storms then
Mostly Cloudy
Friday

Friday: Mostly sunny and hot, with a high near 95. West wind 5 to 10 mph becoming east southeast in the afternoon.
Hot

Friday
Night
Friday Night: A 30 percent chance of showers and thunderstorms before midnight.  Mostly cloudy, with a low around 63.
Chance
T-storms then
Partly Cloudy
Saturday

Saturday: A 20 percent chance of showers and thunderstorms after noon.  Mostly sunny and hot, with a high near 93.
Mostly Sunny
then Slight
Chance
T-storms
Saturday
Night
Saturday Night: A chance of showers and thunderstorms before midnight.  Partly cloudy, with a low around 61.
Chance
T-storms then
Partly Cloudy
Sunday

Sunday: A slight chance of showers and thunderstorms after noon.  Sunny and hot, with a high near 94.
Sunny then
Slight Chance
T-storms
Hi 97 °F Lo 59 °F Hi 101 °F Lo 62 °F Hi 95 °F Lo 63 °F Hi 93 °F Lo 61 °F Hi 94 °F

Hazardous Weather Outlook
Severe Thunderstorm Watch
 

This Afternoon
 
Sunny and hot, with a high near 97. South wind 10 to 15 mph.
Tonight
 
A 20 percent chance of showers before 9pm. Partly cloudy, with a low around 59. South wind around 10 mph.
Thursday
 
Sunny and hot, with a high near 101. West wind 5 to 10 mph.
Thursday Night
 
A 20 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 62. West wind 5 to 10 mph becoming south southwest after midnight.
Friday
 
Mostly sunny and hot, with a high near 95. West wind 5 to 10 mph becoming east southeast in the afternoon.
Friday Night
 
A 30 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 63.
Saturday
 
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny and hot, with a high near 93.
Saturday Night
 
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 61.
Sunday
 
A slight chance of showers and thunderstorms after noon. Sunny and hot, with a high near 94.
Sunday Night
 
A slight chance of showers and thunderstorms before midnight. Mostly clear, with a low around 59.
Monday
 
Sunny and hot, with a high near 94.
Monday Night
 
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 59.
Tuesday
 
Sunny and hot, with a high near 92.
Tuesday Night
 
A slight chance of showers and thunderstorms. Mostly clear, with a low around 60.
Wednesday
 
Sunny and hot, with a high near 92.

 

Forecast from NOAA-NWS for Alliance NE.

Weather Forecast Discussion
846
FXUS65 KCYS 132128
AFDCYS

Area Forecast Discussion
National Weather Service Cheyenne WY
328 PM MDT Wed Aug 13 2025

.KEY MESSAGES...

- Hot temperatures and critical fire weather conditions are
  expected Wednesday and Thursday.

- Isolated to widely scattered PM showers and thunderstorms will
  return for Thursday onward.

&&

.SHORT TERM /THROUGH FRIDAY/...
Issued at 306 PM MDT Wed Aug 13 2025

A surface trough is going to push through Southeast Wyoming this
evening to produce some storms in the Northern half of the forecast
area. Looking at mid level water vapor there is some moisture
dropping southeast through the northern counties of Southeast
Wyoming and the northern portion of the Nebraska panhandle. There is
a vort max that will skirt the South Dakota and Nebraska border
coupled with some weak warm air advection. This area of the Northern
panhandle makes it most favorable for storm development or create
the most favorable environment for thunderstorms. Some of the hi-res
guidance has the trough moving more north into South Dakota while
other guidance keeps this feature along the border. So I kept pops
low to represent this uncertainty. SPC mesoanalysis also has about
500 CAPE with 30 knots of shear. With that low of CAPE it is
unlikely that any thunderstorm tapping into this energy pool will
become severe however a gusty shower cannot be ruled out.

Thursday, An upper level shortwave will be responsible for more of
the scattered showers and thunderstorms in the late afternoon and
evening. Moisture looks to retreat back westward to the Laramie
range in the late morning to early afternoon. As this wave lifts
through our region storm motion looks to follow to the northeast.
CAPE and shear look to remain minimal so severity looks uncertain.
SPC has kept our area in general thunder for tomorrow with a
Marginal risk further east.

&&

.LONG TERM /FRIDAY NIGHT THROUGH WEDNESDAY/...
Issued at 306 PM MDT Wed Aug 13 2025

An upper level ridge pushes off to the east at the start of the
long term with westerly flow aloft becoming southwesterly and
moisture advection pushing in at lower levels for Saturday and
Sunday. This will increase the threat of afternoon thunderstorm
activity as a pulse of energy pushes through along with rain
chances hitting the ground on the aforementioned days primarily
across our northern counties, from Niobrara into Box Butte.
Drier air will hold firm across the western zones limiting any
thunderstorm and precipitation chances. There remains some
uncertainty to how much rain will actually reach the ground due
to the fact that dry air has been in place for a while. This
combined with the thunderstorm activity may bring the chances of
dry lighting, creating some concerns regarding fire weather.
Late Sunday into at least mid-week, the ridge that pushed off to
the east early in the long term will retrograde to the Four-
Corners region, bringing back westerly flow aloft. All the
global ensembles show a ridge building in next week, there is
some disagreement as to the amplification of the ridge and how
warm we will get. This mainly has to do with a low pressure
system moving into the Pacific Northwest which may impact how
amplified the ridge will be over us which will be monitored
going forward.

&&

.AVIATION /18Z TAFS THROUGH 18Z THURSDAY/...
Issued at 1123 AM MDT Wed Aug 13 2025

Isolated thunderstorms may impact KCDR and KAIA this afternoon
possibly dropping to MVFR conditions, but coverage will be
around 30 percent or less. Chances of thunderstorms will remain
low, below 10 percent, for most other locations. Relatively
quiet for Aviation concerns across the remainder of the CWA
today into tonight, with generally VFR conditions prevailing.
South winds will become westerly through this afternoon into
tonight.

&&

.CYS WATCHES/WARNINGS/ADVISORIES...
WY...Red Flag Warning until 8 PM MDT this evening for WYZ418>422-
     424-425-427>429.
NE...None.

&&

$$

SHORT TERM...MM
LONG TERM...RZ
AVIATION...RZ
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Forecast Discussion from: NOAA-NWS Script developed by: El Dorado Weather






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