On the afternoon of June 25th, thunderstorms developed in southwestern Nebraska ahead of an approaching cold front. These thunderstorms produced damaging hail up to half dollar in size within the area.
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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 GLD wrote it up.
On the afternoon of June 25th, thunderstorms developed in southwestern Nebraska ahead of an approaching cold front. These thunderstorms produced damaging hail up to half dollar in size within the area.
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 Goodland, KS wrote its last area forecast discussion before the first event at Jun 25, 11:21 AM CST, 2 hours 34 minutes earlier.
Area Forecast Discussion National Weather Service Goodland KS 1121 AM MDT Fri Jun 25 2021 .SHORT TERM...(Today through Saturday night) Issued at 355 AM MDT Fri Jun 25 2021 Overview: Troughing /cyclonic flow/ aloft will prevail over the central CONUS.. downstream of an amplifying ridge along the Pacific coast.. and upstream of an amplifying ridge along the Mid- Atlantic/Southeast coast. Today-Tonight: Another complex/challenging forecast. Widespread convection yesterday evening and ongoing convection early this morning have significantly modified/depleted the elevated mixed layer (EML).. with mid-level lapse rates presently on the order of 6.5-7.5 C/km (per 09Z SPC Mesoanalysis). While some recovery is anticipated this afternoon, full replenishment (i.e. 8-9 C/km mid- level lapse rates) will likely be relegated to southeast CO and far southwest KS (in closer proximity to the Raton Mesa), where WSW flow aloft (downstream of the Desert Southwest) will prevail.. in contrast to areas further north (i.e. northern CO and WY) -- where cyclonic flow aloft is more firmly established and cloud cover/convection are more likely to mitigate diurnal heating. A variety of small amplitude waves were present upstream of the area this morning.. the most notable of which was situated in northeast UT and southwest WY. The aforementioned wave is anticipated to progress eastward across the Rockies this afternoon.. aiding in the development of scattered convection along the Colorado Front Range. A rather chaotic low-level (sfc-850 mb) pattern -- considerably altered by recent and ongoing convection, as evidenced by the presence of numerous outflow boundaries and sporadic pressure falls/rises at automated observations sites -- introduces additional complexity (uncertainty) to the forecast, particularly with regard to the evolution of the MSLP/height pattern and thermodynamic environment this aft/eve.. when convection (emanating from the CO Front Range) will be approaching from the west. As one might expect, simulated reflectivity forecasts via recent runs of the HRRR/NAM NEST display poor model-to-model and run-to-run continuity. While it is likely that convection emanating from the Rockies will progress into eastern CO and western KS this aft/eve (after ~22Z), convective coverage/mode.. and extent/magnitude of severe weather threat.. remain highly uncertain. Sat-Sat night: Troughing /cyclonic flow/ is anticipated to shift eastward into the Northern/Central Plains. With the Tri-State area situated on the western periphery of the trough (in closer proximity to northerly flow aloft) and an inverted sfc ridge extending southward along the lee of the Rockies.. the focus for widespread convection is anticipated to shift southward into the Southern Plains (TX/OK).. and diurnal convection in the Rockies should largely be confined/pinned to the Colorado Front Range. .LONG TERM...(Sunday through Friday) Issued at 222 AM MDT Fri Jun 25 2021 The extended period begins with the axis of a longwave trough over the High Plains with a highly amplified ridge over the Pacific Northwest along with another strong area of high pressure over the eastern CONUS. Slightly below normal temperatures look to be expected Sunday and Monday as high temperatures will range from the low 70s to low 80s each day with northerly winds. Guidance indicates disturbances riding down the eastern side of the ridge creating widespread showers and storms over the Front Range. Currently it appears as if the best chance of precipitation in the Tri-State area will be along and west of the Kansas/Colorado border, with more scattered to isolated chances along a McCook to Colby to Leoti line. The severe weather risk at this time looks to be low due to low CAPE and low wind shear for each day. Tuesday through the remainder of the extended period looks to be fairly similar as the trough axis remains over the High Plains. It appears that the high pressure over the eastern CONUS shifts off to the east over the Atlantic Ocean during the day Tuesday which will allow for more southerly flow leading to a gradually warming of temperatures through the remainder of the week. As the trough slowly moves east, a piece of energy breaks off and creates a cut off low like feature that meanders around the High Plains for the duration of the forecast which will create diurnal chances for showers and storms. Overall confidence of where these showers and storms will develop is unclear at this time due to variances in positioning of synoptic features in guidance. High temperatures Tuesday will be slightly warmer than the previous days as highs will range from the upper 70s to mid 80s. By the end of the work week high temperatures will recover to near normal temperatures for early July in the mid 80s to low 90s. && .AVIATION...(For the 18Z TAFS through 18Z Saturday afternoon) Issued at 1115 AM MDT Fri Jun 25 2021 VFR to MVFR conditions are expected during the TAF period. A SW to NNE oriented line of showers and weak thunderstorms are moving within the western vicinity of both MCK and GLD terminals as of 17Z. Around 22Z, storms will begin to develop over eastern Colorado and move east across the area, impacting GLD around the 00-03Z time frame and MCK around 01-04Z. Hazards with these storms include large hail and up to 70 mph wind gusts. Winds are expected to vary from NW to E/SE this afternoon ahead of any developing storms with a few gusts possible around 20 kts. After the storms move out of the area, VFR conditions should return with NW winds around 5-15 kts through the end of the period. && .GLD WATCHES/WARNINGS/ADVISORIES... KS...NONE. CO...NONE. NE...NONE. && SHORT TERM...VINCENT LONG TERM...TT AVIATION...KMK
Hazardous Weather Outlook National Weather Service Goodland KS 1152 AM MDT Fri Jun 25 2021 COZ090>092-KSZ001>004-013>016-027>029-041-042-NEZ079>081-261800- Yuma-Kit Carson-Cheyenne-Rawlins-Decatur-Norton-Sherman-Thomas- Sheridan-Graham-Wallace-Logan-Gove-Greeley-Wichita-Dundy-Hitchcock- Red Willow- 1152 AM MDT Fri Jun 25 2021 /1252 PM CDT Fri Jun 25 2021/ This hazardous weather outlook is for extreme southwest Nebraska... northwest Kansas and east central Colorado. .DAY ONE...THIS AFTERNOON AND TONIGHT... Severe thunderstorms capable of producing large hail up to 1 inch and damaging winds up to 70 mph are possible across the majority of the area this afternoon and evening, mainly between 4 PM and 11 PM MDT. Scattered thunderstorms will develop along portions of the Colorado Front Range this afternoon, progressing eastward into western Kansas during the late afternoon and evening. Isolated/scattered storms are developing across portions of southwest Nebraska and northwest Kansas and may continue through the early afternoon. Some uncertainty remains with regard to storm coverage and the impact on the environment from the isolated/scattered storms over NW Kansas and SW Nebraska. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH FRIDAY... Hazardous weather is not anticipated at this time. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report any severe or significant weather to the National Weather Service in Goodland via social media or telephone.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
959 AM MDT FRI JUN 25 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0830 PM TSTM WND DMG 8 S WALLACE 38.80N 101.59W
06/24/2021 WALLACE KS PUBLIC
DELAYED REPORT VIA SOCIAL MEDIA. LARGE LIVE
TREE LIMB SEVERAL FEET LONG IN SIZE WAS
SNAPPED OFF A TREE DUE TO STRONG WINDS. TIME
ESTIMATED.
&&
KMKSpecial Weather Statement National Weather Service Goodland KS 214 PM CDT Fri Jun 25 2021 NEZ080-251930- Hitchcock NE- 214 PM CDT Fri Jun 25 2021 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN HITCHCOCK COUNTY UNTIL 230 PM CDT... At 214 PM CDT, Doppler radar was tracking a strong thunderstorm 5 miles south of Palisade, or 9 miles northwest of Trenton, moving east at 15 mph. Nickel size hail and wind gusts up to 50 mph will be possible with this storm. Locations impacted include... Trenton and Palisade. LAT...LON 4010 10095 4020 10125 4035 10121 4035 10089 TIME...MOT...LOC 1914Z 281DEG 13KT 4027 10114 024
Special Weather Statement National Weather Service Goodland KS 231 PM CDT Fri Jun 25 2021 NEZ080-251945- Hitchcock NE- 231 PM CDT Fri Jun 25 2021 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN HITCHCOCK COUNTY UNTIL 245 PM CDT... At 231 PM CDT, Doppler radar was tracking a strong thunderstorm 5 miles northwest of Trenton, moving southeast at 20 mph. Nickel size hail and wind gusts up to 50 mph will be possible with this storm. Locations impacted include... Trenton and Culbertson. LAT...LON 4011 10084 4019 10119 4035 10110 4035 10076 TIME...MOT...LOC 1931Z 292DEG 16KT 4025 10106 024
The Goodland radar (KGLD), 112 km away, was scanning. The volume nearest the first event began at 19:54 UTC.
2 hail. Local standard time, as filed.
Quarter to half dollar sized hail reported at location along which may have caused possible crop damage.
Report received of hail ranging from half inch to quarter size at location.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Nebraska in 2021Every state in 2021This day in weather historyWarnings in Nebraska, June 2021
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: 968203, 968204.