textproduct: North Platte

KEY MESSAGES

- Isolated severe thunderstorms will be possible late this afternoon into the evening across western Nebraska.

- Warmer temperatures by Sunday, but lower humidity should keep any heat headlines at bay.

- Increasing heat and humidity is expected across all of western and north central Nebraska for late week and into Independence Day weekend.

SHORT TERM /THROUGH SUNDAY NIGHT/

Issued at 325 AM CDT Sat Jun 27 2026

Severe potential late this afternoon and evening is the concern in the very near term. A deep area of upper level low pressure is located across the northern Rockies region. At the surface low pressure will deepen across eastern WY through the day. This surface low is quite deep, with most models suggesting it in the neighborhood of 990mb by very late this afternoon into this evening. As the low deepens it will help back the surface low-level flow to SE ahead of the dryline. By late this afternoon the dryline should be located from near Goodland, KS to Alliance up to near Chadron. The mid-level flow increases during the afternoon, with 0-6km bulk shear values really ramping up by mid to late afternoon. Mid-level lapse rates will be steep, and along with the rich low-level moisture and heating, SBCAPE values on the order of 4000 to 5000 J/KG will be in place east of the dryline. Most high-res model guidance develops at least a couple of cells near the dryline by late afternoon. Of note, there is a strong capping inversion in place. It appears though that strong heating near and west of the dryline should erode this cap and allow for convective initiation. Any storm that develops will likely become a supercell and quickly severe as they move off the dryline into the moist and unstable atmosphere. Sounding profiles strongly support this scenario. Once storms become rooted in the boundary layer would expect them to survive through at least mid-evening as they move eastward toward central NE. Later in the evening as the low-level jet increases, elevated convection will likely develop across north central Nebraska.

On Sunday the WY surface low should move eastward into SD. A surface trough will move eastward across the area as this occurs. Drier air should filter into the area as this occurs limiting the convective potential. Otherwise it will be rather hot, with highs into the lower 90s. Lower surface dew points should keep heat index readings in check, however.

LONG TERM /MONDAY THROUGH FRIDAY/

Issued at 325 AM CDT Sat Jun 27 2026

Broad southwest flow continues aloft into next week, with an upper shortwave progged to eject out of southern Nevada towards the northern Plains by midweek. This suggests at least some threat for near daily thunderstorms through Wednesday, with mesoscale features largely driving the areal extent of any storms. With flow remaining strong aloft, a threat for strong to severe storms appears possible each day as well. The first threat looks to arrive on Monday evening, though timing differences in the upper trough axis lends low confidence in thunderstorm formation locally. The faster solutions keep the deeper surface moisture east, and with it the greatest threat for convection initiation. Slower solutions suggest at least some threat for strong to severe storms across central and north central Nebraska by late evening and into the overnight hours. Large hail and damaging winds looks to be the primary hazards should storms initiate far enough west to impact the local area. Mesoscale details will need to be resolved as we head into midweek to have much clarity on additional thunderstorm threats, and trends will continue to be monitored.

Upper ridging then begins to establish across the Midwest and Ohio River Valley towards late week, with height rises across the Plains as this occurs. A persistent warm advection regime establishes late week as well, boosting highs each day. Widespread upper 80s to low 90s return by Thursday and highs may challenge the middle to upper 90s by Friday and Independence Day. This will overlap with surface dewpoints in the middle to upper 60s, and this combination will lead to increasing heat indicies as we head into the holiday weekend. With lots of outdoor activities planned this weekend across the area, the threat for hazardous heat will need to be monitored closely.

AVIATION /12Z TAFS THROUGH 12Z SUNDAY/

Issued at 625 AM CDT Sat Jun 27 2026

Widespread low stratus and patchy fog persists into early this afternoon across all of western and north central Nebraska, with IFR/LIFR CIGs continuing. By early to mid-afternoon, gradual improvement back to VFR is expected for all terminals. VFR conditions then prevail into tonight.

Isolated thunderstorm development is possible across western Nebraska this evening, though confidence is too low for any TS inclusion at KLBF for now.

Winds remain strong from the south today and tonight, with widespread southerly gusts of 25 to 35kts this afternoon. As winds weaken overnight, southerly LLWS is expected to develop across southwest Nebraska and the Sandhills.

LBF WATCHES/WARNINGS/ADVISORIES

None.