textproduct: Hastings

KEY MESSAGES

- Scattered storms will continue to pass in and out of multiple portions of the area through the rest of the day. The best storm chances will gradually shift from northwest to southeast portions of the area through the day and night.

- The main hazards possible with the strongest storms would be gusty winds up to around 60MPH, hail up to the size of quarters and heavy rainfall that could lead to a few localized areas of flooding.

- The next chance for precipitation beyond tonight (20-60 percent; increasing towards the east) does not come until Friday.

- A heat advisory will be in effect for southeast portions of the area from noon until 7PM today. Temperatures as high as 95-102 degrees with heat index values as high as 105-109 degrees will be possible for these areas.

- Cooler temperatures will fill in behind the cold front today with highs retuning to the upper 70s to mid 80s for both Wednesday and Thursday.

UPDATE

Issued at 1217 AM CDT Tue Sep 8 2026

A handful of storms tonight will continue to slide in and out of primarily central to northwest portions of the area (locations near, north and west of the Tri-Cities) through the rest of the morning. These storms have and will continue to form along a high moisture reservoir/low-level jet steered corridor, that currently stretches from northern Arizona to central Nebraska. Though the potential for a few stronger storms still remain this morning, generally speaking, the instability (500-1,000J/km of MLCAPE) and shear (20-40 kts) does not appear to be all that supportive for sustaining strong to borderline severe storm for very long. Given the moist (and high theta-e) environment, strong PWAT values this morning as high as 1.5-2in suggest that a few of the stronger/heavier downpours may deposit more appreciable rainfall amounts. A few areas of flooding can't be ruled out across locations that receive multiple rounds of the "more efficient" rainstorms.

This region of scattered convective activity has formed ahead of an approaching trough/upper-level disturbance that will soon shake things up here locally. For starters, a cold front is on the way in from the northwest today. This frontal passage will claim responsibility for the highs in the 80s across locations near and northwest of the Tri-Cities today as well as the upper 70s to mid 80s highs that will return back to the full area for both Wednesday and Thursday. Locations near and south of the state line should still see temperatures climb as high as the mid 90s to low 100s today as the front will not be expected to reach these locations before the peak heating of the day. A Heat Advisory will be in effect from noon until 7PM tonight for Nuckolls and Thayer counties in Nebraska as well as Rooks, Smith, Osborne, Jewell and Mitchell counties in Kansas. Heat index values in these areas will rise to as high as 105-109 degrees this afternoon.

Scattered storms will continue to develop along the southwest to northeast oriented pre-frontal moisture/instability axis through the remainder of the day. The cluster of storms will gradually shift south and east during the day and night. A few strong to severe storms will again be possible this evening as instability rebuilds across portions of the area mainly along, south and east of the Tri-Cities. A marginal risk of severe weather is currently in place across areas south and east of a line that extends from Furnas up to Nance counties. A few storms may be able to produce wind gusts in excess of 60MPH with hail up to the size of quarters. Locally heavy rainfall amounts may additionally lead to a few localized area of flooding.

Northerly winds behind the passing front today will advect in a cooler and drier airmass. This will keep temperatures out of the 90s through Thursday with dewpoints falling back to the mid 50s to mid 60s. In addition, no chances for precipitation currently lie between Wednesday and Friday morning as more stable conditions are expected to establish behind the upper-level disturbance.

DISCUSSION

Issued at 215 PM CDT Mon Sep 7 2026

Relatively deep mixing is resulting in breezy south winds with gusts near 30 MPH across much of the area. Spotty gusts as high as 40 MPH cannot be ruled out through late afternoon.

Convection is expected to develop along a pre-frontal trough over western Nebraska this evening, potentially reaching Furnas/Gosper/Dawson counties by around 7pm. A few of these storms could be marginally severe through the evening, but intensity is expected to wane by midnight. The primary threat would be wind given the deep mixing and high cloud bases.

Scattered showers and thunderstorms persist through the overnight and into Tuesday morning as a cold front pushes in from the northwest. South of the front should remain mostly clear, allowing for one more day of heat index values near/over 105 degrees. A Heat Advisory was issued for areas that are most favored to remain south of the front into the afternoon, although there is some potential for this to "bust" if the frontal timing were to speed up. Fun fact: this is the latest Heat Advisory ever issued by NWS Hastings. Prior to this year, we had never issued a heat advisory in September, but there have been 4 days with Heat Advisories this September!

Most of the storms during the daytime should be non-severe, although CAMs hint at slightly more robust convection along the front late Tuesday afternoon into the evening. This would favor southeastern portions of the forecast area that are warmer and therefore more unstable.

Wednesday and Thursday trend drier with more seasonable temperatures (highs in the low 80s and lows in the upper 50s to low 60s). That said, some low PoPs (10-20%) persist over portions of Kansas. Above-normal temperatures are favored to return Friday, but another system will provide a cooldown and additional rain/t-storm chances for Saturday through next Monday.

AVIATION /06Z TAFS THROUGH 06Z WEDNESDAY/

Issued at 1217 AM CDT Tue Sep 8 2026

For KGRI/KEAR Airports:

An overall low-confidence forecast for this TAF period, driven primarily by widespread precipitation chances across the area. Hard to have a high degree of confidence in chances the further out in the period you go. For the first few hours, radar showing a swath of scattered showers/storms gradually working its way NE across portions of central NE...decided to go with a tempo group through 09Z at both sites, though chances are likely better at KEAR than KGRI. Chances look to be more sparse as we get more into the early morning/hours around dawn...before picking back up as a surface cold front gradually sinks south through the area. The better chances near this front looking to roughly be through mid-late afternoon...then sink further south as we get into the evening hours. Currently have VFR conditions throughout the period, even with the tempo/PROB30 groups...though activity could result in more variable gusty winds. Winds ahead of the cold front look to be on the lighter side...and models continue to show the potential for LLWS for the first few hours of this period. Winds turn a bit more variable along the front...then switching to the NNE behind the front. Can't rule out some gusty conditions with the initial passage of the front...but speeds should diminish later in the period.

GID WATCHES/WARNINGS/ADVISORIES

NE...Heat Advisory from noon today to 7 PM CDT this evening for NEZ086-087. KS...Heat Advisory from noon today to 7 PM CDT this evening for KSZ006-007-017>019.