High pressure aloft remained anchored over the southern plains in Late June. On the evening of June 29th, an upper level disturbance, rotating on the northern periphery of the high, triggered thunderstorms across the area.
Every event with a place to put it. Tap one for its entry below.
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 LBF wrote it up.
High pressure aloft remained anchored over the southern plains in Late June. On the evening of June 29th, an upper level disturbance, rotating on the northern periphery of the high, triggered thunderstorms across the area. Hail up to 1.5 inches in diameter and thunderstorm wind gusts up to 64 MPH were reported.
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 North Platte, NE wrote its last area forecast discussion before the first event at Jun 28, 11:49 PM CST, 46 minutes earlier.
Area Forecast Discussion National Weather Service North Platte NE 1249 AM CDT Thu Jun 29 2023 ...Aviation discussion... .SYNOPSIS... Issued at 350 PM CDT Wed Jun 28 2023 Key Messages: - Isolated evening thunderstorms across the west, with scattered showers and thunderstorms after midnight. Isolated storms containing large hail and damaging winds are possible this evening mainly west of Highway 83. - Very active with a good potential for thunderstorms with widespread moderate to heavy rain Thursday through Friday night. - Some storms could contain large hail and damaging winds Thursday night, especially near and south of Highway 2. - Shower and thunderstorm potential returns for Monday night through Wednesday. && .SHORT TERM...(This evening through Thursday night) Issued at 350 PM CDT Wed Jun 28 2023 Tonight, an upper trough will deepen across the Great Basin. Zonal flow aloft will continue across the Central Plains. 0-6km shear from 30-40kts and steep mid level lapse rates will remain across western Nebraska, where a few storms could become severe in the panhandle, possibly developing into a cluster of two moving southeast into the western Sandhills and southwest Nebraska. Areas near and west of Highway 83 will be the main area of concern. Scattered elevated storms should develop after midnight as the low-level jet increases, mainly near and north of I80. On Thursday into Thursday night, the upper trough over the Great Basin will weaken as it begins to lift into the Northern and Central Plains. In doing so, this will increase moisture, deep layer shear and instability across the region. An easterly low-level flow will be in place. Showers and thunderstorms are expected to linger into Thursday morning, especially across the north central. New development should initiate to our west during the afternoon with upscale growth Thursday night. Some storms may be severe, especially south of Highway 2. Likely to categorical POPs Thursday night. .LONG TERM...(Friday through Wednesday) Issued at 350 PM CDT Wed Jun 28 2023 The ECMWF EFI for QPF Thursday night through Friday night indicates anomalously high values across the panhandle, northeast Colorado and all of west central and southwest Nebraska. GFS and ECMWF ensembles have continued forecast QPFs from 1 inch to 1.75 inches, with the heaviest amounts between Highway 2 and I80. The upper trough will move through the region as positively tilted, but will be slow moving. The heaviest precipitation will fall Thursday night through Friday night, with showers and a few thunderstorms lingering into Saturday. There is increasing concern that some localized flooding may occur, with recent rainfall moistening the topsoil. Northwest flow returns to the region Sunday through Monday, with and upper low across Canada bringing a cold front and zonal flow aloft Monday night into Tuesday. Precipitation chances return Monday night through Wednesday. Temperatures from the upper 70s to near 80 Friday and low 80s Saturday Saturday. Warming back to seasonable temperatures Sunday into Tuesday. && .AVIATION...(For the 06Z TAFS through 06Z Thursday night) Issued at 1249M CDT Thu Jun 29 2023 The biggest challenge this valid period is timing and location of convection at TAF sites. At KVTN, Upstream convection currently evident on radar up near the Badlands in South Dakota is trending down and expect continued weakening will occur. Do not currently see a need to mention any convection in the vicinity so will maintain a dry forecast until closer to daybreak when blooming convection overnight looks to pass by just to the south. Expect dry conditions through most of Thursday and do not have enough confidence in convective initiation this evening to mention with this issuance. At KLBF, vigorous thunderstorms are currently sliding by just to the south, but some northward spread of new development is evident on latest radar trends. Will go a bit heavy handed and indicate prevailing showers with VCTS and MVFR vsby through the early portion of the valid period. Winds are also gusting above guidance at issuance and believe winds are being influenced by the storms to the south. Will indicate some robust gusts to 45kt for the first couple of hours and adjust as needed. Convection should be clear of the airfield by daybreak and will maintain a dry forecast until toward the end of the valid period where there is better confidence in new thunderstorm development affecting KLBF. Winds will generally be light to around 10kt with an easterly direction. Winds near thunderstorms will be erratic and gusty. && .LBF WATCHES/WARNINGS/ADVISORIES... NONE. && SYNOPSIS...Roberg SHORT TERM...Roberg LONG TERM...Roberg AVIATION...MBS
Hazardous Weather Outlook National Weather Service North Platte NE 256 PM CDT Wed Jun 28 2023 NEZ004>010-022>029-035>038-056>059-069>071-094-292000- Sheridan-Eastern Cherry-Keya Paha-Boyd-Brown-Rock-Holt-Garden-Grant- Hooker-Thomas-Blaine-Loup-Garfield-Wheeler-Arthur-McPherson-Logan- Custer-Deuel-Keith-Perkins-Lincoln-Chase-Hayes-Frontier- Western Cherry- 256 PM CDT Wed Jun 28 2023 /156 PM MDT Wed Jun 28 2023/ This Hazardous Weather Outlook is for central Nebraska, north central Nebraska, panhandle Nebraska, southwest Nebraska and west central Nebraska. .DAY ONE...Tonight. Scattered thunderstorms are expected tonight. A few severe storms are possible, especially across portions of western into southwest Nebraska. Large hail and damaging winds are the main threats. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Multiple rounds of rain and thunderstorms are expected Thursday and Friday. Though a few strong to briefly severe thunderstorms will be possible each day, the main concern will be heavy rainfall with widespread one to two inches and locally higher amounts possible leading to an increased threat for localized flooding. Continue to monitor later forecasts for more up to date information regarding this threat. .SPOTTER INFORMATION STATEMENT... Spotter activation could be needed across portions of western and southwest Nebraska. Taylor
The national radar mosaic for the moment the first event began.
7 hail, 4 thunderstorm wind. Local standard time, as filed.
Public estimates 60 mph wind gusts and hail causing tree and crop damage.
Public estimated severe wind gusts over 60 mph.
Public estimated a 60 mph wind gust.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Nebraska in 2023Every state in 2023This day in weather historyWarnings in Nebraska, June 2023
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: 1112070, 1112062, 1112064, 1112063, 1112074, 1112071, 1112065, 1112072, 1112066, 1112067, 1112068.