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Gretna, Nebraska 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for Gretna NE
National Weather Service Forecast for: Gretna NE
Issued by: National Weather Service WFO Omaha, NE
Updated: 1:05 am CDT Jul 14, 2025
 
Overnight

Overnight: Clear, with a low around 63. South southwest wind around 6 mph.
Clear

Monday

Monday: Sunny, with a high near 91. South southwest wind 3 to 8 mph.
Sunny

Monday
Night
Monday Night: Clear, with a low around 67. South southeast wind 6 to 8 mph.
Clear

Tuesday

Tuesday: Sunny, with a high near 90. South wind 6 to 10 mph, with gusts as high as 16 mph.
Sunny

Tuesday
Night
Tuesday Night: A 40 percent chance of showers and thunderstorms, mainly after 1am.  Partly cloudy, with a low around 68. Southeast wind around 9 mph.  New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Chance
T-storms

Wednesday

Wednesday: A 20 percent chance of showers and thunderstorms.  Partly sunny, with a high near 86. Southeast wind 7 to 9 mph becoming west in the morning. Winds could gust as high as 17 mph.
Slight Chance
T-storms

Wednesday
Night
Wednesday Night: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 65. North wind around 8 mph.
Chance
T-storms

Thursday

Thursday: A chance of showers and thunderstorms before 1pm, then a slight chance of showers.  Mostly cloudy, with a high near 78. North wind around 8 mph, with gusts as high as 16 mph.
Chance
Showers

Thursday
Night
Thursday Night: A slight chance of showers after 1am.  Partly cloudy, with a low around 62. Northeast wind around 7 mph.
Partly Cloudy
then Slight
Chance
Showers
Lo 63 °F Hi 91 °F Lo 67 °F Hi 90 °F Lo 68 °F Hi 86 °F Lo 65 °F Hi 78 °F Lo 62 °F

 

Overnight
 
Clear, with a low around 63. South southwest wind around 6 mph.
Monday
 
Sunny, with a high near 91. South southwest wind 3 to 8 mph.
Monday Night
 
Clear, with a low around 67. South southeast wind 6 to 8 mph.
Tuesday
 
Sunny, with a high near 90. South wind 6 to 10 mph, with gusts as high as 16 mph.
Tuesday Night
 
A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 68. Southeast wind around 9 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
 
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 86. Southeast wind 7 to 9 mph becoming west in the morning. Winds could gust as high as 17 mph.
Wednesday Night
 
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65. North wind around 8 mph.
Thursday
 
A chance of showers and thunderstorms before 1pm, then a slight chance of showers. Mostly cloudy, with a high near 78. North wind around 8 mph, with gusts as high as 16 mph.
Thursday Night
 
A slight chance of showers after 1am. Partly cloudy, with a low around 62. Northeast wind around 7 mph.
Friday
 
A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 82. Southeast wind 6 to 8 mph.
Friday Night
 
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 66. East southeast wind around 7 mph.
Saturday
 
A chance of showers and thunderstorms. Partly sunny, with a high near 85. Southeast wind 6 to 9 mph, with gusts as high as 16 mph.
Saturday Night
 
A chance of showers and thunderstorms. Partly cloudy, with a low around 67. Southeast wind around 6 mph.
Sunday
 
A slight chance of showers and thunderstorms. Partly sunny, with a high near 86. Southeast wind 6 to 8 mph.

 

Forecast from NOAA-NWS for Gretna NE.

Weather Forecast Discussion
112
FXUS63 KOAX 140443
AFDOAX

Area Forecast Discussion
National Weather Service Omaha/Valley NE
1143 PM CDT Sun Jul 13 2025

.KEY MESSAGES...

- Warmer and humid through Tuesday.

- There is a 20% chance of storms in northeast Nebraska this
  afternoon and evening. If they develop, some could be strong
  to severe (5-10% chance), with damaging winds and hail the
  primary hazards.

- Potential exists for repeated rounds of storms beginning as
  early as late Tuesday afternoon, but questions remain on exact
  timing. If places do see multiple rounds of storms, flooding
  could become a concern again. Some severe weather is also
  possible.

- Cooler temperatures on Thursday into Friday

&&

.DISCUSSION...
Issued at 245 PM CDT Sun Jul 13 2025

     Late this afternoon through Monday...

Mid-level heights are building this afternoon from the northern
Plains into the mid-MO Valley in the wake of a short-wave trough
currently over the upper Great Lakes. In the low levels, a
surface front was analyzed from the eastern Dakotas into north-
central NE as of early afternoon, with that feature expected to
reach the far northwest part of our area late this afternoon or
early this evening before stalling. Latest visible satellite
data show a growing cumulus field along the boundary, which is
indicative of a gradually weakening cap.

Strong daytime heating coupled with some moisture advection and
evapotranspiration effects have contributed to moderately
unstable, pre-frontal air mass with MLCAPE of around 2000 J/kg.
Recent HRRR trends seem to be at odds with the satellite
observations in that the model has backed off on storm
development in our area through this evening. However, the
other CAMs indicate isolated storm development along the front
later today.

Despite the air mass becoming uncapped, the presence of the
mid-level height rises (implied subsidence) and weakening
convergence along the front may limit storm coverage to
isolated at best. On the condition that storms develop and
become sustained, deep-layer shear of 30-35 kt may support some
organization, with the potential for hail approaching severe
levels along with locally strong wind gusts.

Mid-level heights continue to build on Monday, with the
previously stalled surface front developing north into the
Dakotas in response to lee cyclogenesis over the northern High
Plains. High temperatures are expected to be a bit warmer than
those today, with readings in the upper 80s to low 90s.


     Tuesday through Thursday...

The 12z global models continue to advertise mid-level height
falls/troughing across the north-central U.S., due to the
progression of a lead disturbance through that area Tuesday and
Tuesday night, and a second, stronger system Wednesday
afternoon and Wednesday night. At the surface, the models have
come into a little better agreement in suggesting that a
convectively aided front will move into the area Tuesday night.
However, differences still exist on how quickly that boundary
clears our area to the south.

A warm and moist air mass will develop across the region on
Tuesday, with highs again in the upper 80s to low 90s. Dry
weather will continue through much of the day, with the models
in good agreement in the development of a large thunderstorm
complex over SD and north-central NE, which eventually moves
into our area Tuesday night. An associated risk for flooding
rainfall, damaging winds, and hail will exist with those storms
as they move through our area.

On Wednesday and Thursday, uncertainties in the exact frontal
position result in a low confidence in rainfall potential and
attendant flooding and severe-weather risks. This forecast
update will indicate the highest PoPs of 40-50% on Wednesday
night, coincident with the movement of the second mid-level
disturbance through the area, as mentioned above.

Temperatures will trend cooler with highs in the 80s to low 90s
on Wednesday, and 70s to low 80s on Thursday.


     Friday and Saturday...

The models indicate the movement of a low-amplitude disturbance
into the northern Plains on Friday, which will encourage the
northward advance of the previously mentioned surface front
back into or to the immediate north our area. There is some
signal for thunderstorm development along that boundary Friday
afternoon into Friday night within a seemingly favorable
environment for severe weather and flooding, so we will be
keeping an eye on that.

Slightly warmer highs in the 80s are forecast both days.

&&

.AVIATION /06Z TAFS THROUGH 06Z TUESDAY/...
Issued at 1128 PM CDT Sun Jul 13 2025

VFR conditions are expected to prevail through the period with
winds remaining out of the south/southwest. Patchy fog over
parts of western Iowa this evening will likely dissipate over
the next few hours as surface winds increase to 5-10kts.

&&

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

&&

$$

DISCUSSION...Mead
AVIATION...KG
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Forecast Discussion from: NOAA-NWS Script developed by: El Dorado Weather






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