On June 7th, a shortwave trough amplified as it ejected out into the northern Great Plains. On the same morning, a low-pressure system developed in the Nebraska Panhandle and slowly traversed east into north-central Nebraska.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS OAX wrote it up.
On June 7th, a shortwave trough amplified as it ejected out into the northern Great Plains. On the same morning, a low-pressure system developed in the Nebraska Panhandle and slowly traversed east into north-central Nebraska. By early afternoon, a stationary front had formed across central and eastern Nebraska. By 3 PM, thunderstorms had developed in north-central Nebraska where the stationary front intersected the surface low. These storms grew upscale into several bowing segments and propagated southeast across the state. While most of the severe weather remained west of the Omaha NWS forecast area, a couple severe wind gusts were reported in southeast Nebraska west of US Highway 77.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Omaha, NE wrote its last area forecast discussion before the first event at Jun 7, 6:07 PM CST, 1 hour 20 minutes earlier. Its key messages:
Area Forecast Discussion National Weather Service Omaha/Valley NE Issued by National Weather Service St Louis MO 707 PM CDT Fri Jun 7 2024 .KEY MESSAGES... - Severe thunderstorms will develop (95% chance) in northern Nebraska by mid to late afternoon, and move across parts of eastern Nebraska and southwest Iowa through late tonight. - The strongest storms may produce areas of significant damaging wind and hail, flash flooding, and a lesser-but-non- zero chance for a tornado. The greatest potential for significant severe weather is southwest of a line from Oneill to Columbus to Syracuse to Nebraska City. - There is another chance for showers or a storm late Saturday, and another low (20-30%) chance for storms on Monday night into Tuesday. - The large scale weather pattern becomes increasingly favorable for a few rounds of strong to severe storms late next week into the weekend. && .DISCUSSION... Issued at 248 PM CDT Fri Jun 7 2024 Skies are partly cloudy this afternoon with a weak boundary bisecting the northern and southern half of our area around the Platte River. There is greater cloud cover north of the boundary and winds are more easterly, while south of the boundary winds are generally out of the south or southeast and skies are more clear. We're watching an upper-level shortwave currently visible in water vapor imagery over western South Dakota, approaching our are. We're already seeing storms out near Valentine associated with this wave and expect additional development around and ahead of these storms over the next few hours. CAPE values in north-central Nebraska with these storms are estimated to be around 2500+ J/kg with effective bulk shear around 50+ kt. Low- level shear (0-1 km) is less impressive, only around 11-12 kt. These environmental parameters indicate a significant hail and wind threat initially with a lesser tornado threat. CAMs show these storms continuing to develop and move along the stationary boundary southeastward toward Ord, Grand Island, and possibly as far east as Columbus. Trends have taken the strongest of the storms farther west, hopefully taking them out of northeast Nebraska completely. Southeast Nebraska isn't looking as lucky with the eastern extent of the corridor of strong storms moving through Lincoln to Peru, NE. As storms start to move into southeast Nebraska, they will tap into an incredibly moist air mass with PWAT values possibly approaching 1.9 inches, which would be a record for June 7th if true. This will make these storms very efficient rain producers, despite the speed of the storms, so they could very well put down a very quick 1-2 inches of rainfall, and if they stall at all, expect flash flooding to quickly become a concern. The speed of this system is really our only saving grace here as far as flash flooding potential. The storms should be out of our area by 1-2 AM tonight, with the cold front moving through actually a few hours later. We could see some low clouds spread across the area Saturday morning which will hang around until early afternoon. This will keep temperatures cooler on Saturday with afternoon highs only in the mid 70s across much of our area. Another shortwave will bring low chances for storms to far southeast Nebraska overnight Saturday night, but better chances will be south of our area. Temperatures will stay mild on Sunday and Monday with highs in the upper 70s to low 80s and mostly sunny skies. Our next widespread chance for showers and storms will be Monday night as we see the breakdown of the upper-level ridge over the Inter-Mountain West with a strong trough passing to our north. The upper-air pattern flips toward the end of the week with a high likelihood of a large-scale trough building into the western CONUS and a series of short wave troughs ejecting into the Plains. Boundary layer moisture will increase and this is a favorable setup for increasing potential for rounds of severe weather by next weekend into the following week. Most model guidance keeps the heart of the jet stream north of the local area, but embedded waves of enhanced mid/upper winds will drive severe potential. There is plenty of time to watch this unfold, but certainly appears to be a signal for an active weather period. && .AVIATION /00Z TAFS THROUGH 00Z SUNDAY/... Issued at 654 PM CDT Fri Jun 7 2024 The primary concern will at least initially be strong to severe thunderstorms moving southeast out of central Nebraska into south-central and southeast Nebraska this evening. Additional thunderstorms extend along a warm front over southeast section of Nebraska, where much of the convection will tend to track through this evening. The strongest cells will include hail, strong winds potentially over 60 mph, and visibility reductions below 1SM with any direct impact. Any direct impact will be best handled and timed out by later amendments/tempo groups, but much of the support for higher impact convection skim along and southwest of KLNK. Thunderstorms move southeast and exit the region 05-07z. Light and variable surface flow is expected through a majority of the 06z-12z timeframe. Guidance is leaning more pessimistic into IFR cigs, but held with low end MVFR for now. Should trends continue, IFR may be warranted along and just behind the cold front in the 09z-15z window. Improvement is expected with VFR returning from mid to late morning Saturday. && .OAX WATCHES/WARNINGS/ADVISORIES... NE...None. IA...None. && DISCUSSION... AVIATION...00
Hazardous Weather Outlook National Weather Service Omaha/Valley NE 310 PM CDT Fri Jun 7 2024 IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034- 042>045-050>053-065>068-078-088>093-081015- Monona-Harrison-Shelby-Pottawattamie-Mills-Montgomery-Fremont- Page-Knox-Cedar-Thurston-Antelope-Pierce-Wayne-Boone-Madison- Stanton-Cuming-Burt-Platte-Colfax-Dodge-Washington-Butler- Saunders-Douglas-Sarpy-Seward-Lancaster-Cass-Otoe-Saline- Jefferson-Gage-Johnson-Nemaha-Pawnee-Richardson- 310 PM CDT Fri Jun 7 2024 This Hazardous Weather Outlook is for portions of southwest Iowa...west central Iowa...east central Nebraska...northeast Nebraska and southeast Nebraska. .DAY ONE...Tonight and Saturday Strong to severe thunderstorms will develop in northern Nebraska by mid to late afternoon, and move across parts of eastern Nebraska and southwest Iowa through the evening. The strongest storms may produce areas of significant damaging wind and hail, flash flooding, and a chance for a few brief tornadoes. The greatest chance for severe weather is southwest of a line from Oneill to Columbus to Syracuse to Nebraska City....between 6 PM and 1 AM. The greatest chance for flash flooding is generally along or just south of this line. .DAYS TWO THROUGH SEVEN...Saturday night through Friday The probability of hazardous weather is low at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated through tonight, though hail and wind reports are appreciated.
Special Weather Statement
National Weather Service Omaha/Valley Nebraska
622 PM CDT Fri Jun 7 2024
NEZ066-072345-
Lancaster NE-
622 PM CDT Fri Jun 7 2024
...A STRONG THUNDERSTORM WILL IMPACT NORTHEASTERN LANCASTER COUNTY
THROUGH 645 PM CDT...
At 622 PM CDT, Doppler radar was tracking a strong thunderstorm over
northeastern Lincoln, moving east at 30 mph.
HAZARD...Wind gusts up to 50 mph and pea size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.
* Locations impacted include...
Lincoln, Waverly, Lincoln Airport, Holmes Lake Park, Walton, and
Pioneers Park.
This includes Interstate 80 in Nebraska between mile markers 397 and
414.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
A Severe Thunderstorm Watch remains in effect until 1100 PM CDT for
southeastern Nebraska.
&&
LAT...LON 4075 9674 4084 9680 4091 9676 4094 9646
4069 9646 4069 9647
TIME...MOT...LOC 2322Z 271DEG 24KT 4082 9666
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...50 MPH
DeWaldSpecial Weather Statement
National Weather Service Omaha/Valley Nebraska
654 PM CDT Fri Jun 7 2024
NEZ066>068-080030-
Cass NE-Otoe NE-Lancaster NE-
654 PM CDT Fri Jun 7 2024
...A STRONG THUNDERSTORM WILL IMPACT EAST CENTRAL LANCASTER...
NORTHWESTERN OTOE AND SOUTHWESTERN CASS COUNTIES THROUGH 730 PM
CDT...
At 653 PM CDT, Doppler radar was tracking a strong thunderstorm 3
miles west of Eagle, or 9 miles east of Lincoln, moving east at 25
mph.
HAZARD...Wind gusts up to 50 mph and half inch hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.
* Locations impacted include...
Eagle, Elmwood, Walton, and Alvo.
This includes Interstate 80 in Nebraska near mile marker 409.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
A Severe Thunderstorm Watch remains in effect until 1100 PM CDT for
southeastern Nebraska.
&&
LAT...LON 4072 9659 4090 9659 4091 9628 4071 9629
TIME...MOT...LOC 2353Z 271DEG 20KT 4081 9650
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH
DeWaldPreliminary Local Storm Report
National Weather Service Omaha/Valley NE
827 PM CDT Fri Jun 7 2024
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0827 PM Tstm Wnd Gst 5 NE Garland 41.00N 96.91W
06/07/2024 E64 MPH Lancaster NE Trained Spotter
&&The Omaha radar (KOAX), 58 km away, was scanning. The volume nearest the first event began at 01:27 UTC.
2 thunderstorm wind. Local standard time, as filed.
A trained spotter estimated winds of 60 to 64 mph on the northwest side of Branched Oak.
Emergency management reported a 65 miles per hour wind gust.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Nebraska in 2024Every state in 2024This day in weather historyWarnings in Nebraska, June 2024
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 1198285, 1198294.