During the evening strong to low end severe thunderstorms moved across East Central Colorado. The largest hail reported was quarter size near Kit Carson.
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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.
During the evening strong to low end severe thunderstorms moved across East Central Colorado. The largest hail reported was quarter size near Kit Carson.
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 9, 5:04 PM MST, 41 minutes earlier.
Area Forecast Discussion National Weather Service Goodland KS 604 PM MDT Fri Jun 9 2023 .UPDATE... Issued at 604 PM MDT Fri Jun 9 2023 Updated the forecast for latest thunderstorm activity. Main idea was to drop chances for precipitation where storms have worked over the environment (basically Benkelman south to Goodland east to Hill City and north to McCook). Did increase pops along the boundaries where convection is ongoing and storms moving in from the west. Activity should begin moving southeast through the evening and then exit by midnight. Still could see some marginally severe storms with hail and wind as the primary threats, and also heavy rainfall where storms are able to move over the same locations repeatedly. && .SHORT TERM...(This evening through Sunday Night) Issued at 338 PM MDT Fri Jun 9 2023 At the start of the short term period, the latest upper air RAP analysis shows the CWA having a south-southeasterly flow aloft being underneath the back end of a ridge with an upper air low over south ID. Current radar imagery and surface observations show showers and storms occurring mostly from Goodland to Hoxie to Norton with some isolated showers along I-70. Models show the upper air pattern pretty much staying the same going into the evening with a shortwave disturbance traveling through the flow over the CWA. At the surface, models show this first round of showers and storms to continue to develop along a stationary boundary cutting across the eastern half of the CWA. In the evening, models show a surface low moving into western KS bringing another round of showers and storms into the CWA as they develop in CO and move eastward across the rest of the CWA though they look to be mostly along and south of I-70. With SBCAPE values continuing to be around 1000 J/kg or above, the severe weather concern continues though the bulk shear values continue to be low (10-20 kts). Large hail up to ping pong balls as well as strong wind gusts look to continue to be a threat. Another concern is for potential flash flooding with areas east of the CO border seeing PWAT values of 1 to 1.2 inches. So will continue to monitor for potential flooding through tonight with storms currently moving slowly and lingering in some areas. Overnight lows look to be in the lower 50s to the lower 60s. Going into Saturday, models show a weak upper air low developing over the CWA by the evening hours within the ridge while an upper air low travels just west of southern CA and another stronger upper air low moves over the Great Lakes region. Another shortwave disturbance is seen traveling through the flow of the CWA during the evening as well. At the surface, chances for showers and storms look to continue for another day with cold front moving through the CWA during the day. Models show bulk shear values starting in the afternoon similar to the previous day, but increasing to around the 30 kt range particularly in the south going into the evening and late evening hours. SBCAPE values look to be in around 1000 J/kg in the west and increase to around 2000 J/kg during the evening. SPC has a marginal risk for severe weather for the entire CWA which looks to be reasonable at this time with storms that develop on Saturday. Large hail and strong winds look to be the potential threats. PWAT values look to be under an inch, so perhaps the flooding concern may be a lesser by a bit compared to the previous day. Will monitor for better timing of the frontal passage along with the precipitation in future forecasts. Daytime highs expect to range between the upper 70s and upper 80s followed by Saturday night's lows in the lower 50s to lower 60s. For Sunday, forecast guidance shows the CWA underneath a weak amplitude ridge throughout the day being between the western low that has now moved over southern CA and the northeastern upper air low still over the Great Lakes. A shortwave trough is seen passing through the flow over the western CWA during the evening. At the surface, the CWA looks to be in a post frontal environment with SBCAPE values under 1000 J/kg for most of the area. However, models show better bulk shear values around 30 kts. Models show another day for chances for showers and thunderstorms, but mostly for the western half of the CWA with the aforementioned trough passing over the region. Severe weather potential looks to be low at this time, but may need to watch for potential flash flooding concerns with PWAT values above 1 inch in some locations. Daytime highs look to cool to between the upper 60s and the upper 70s after the previous day's frontal passage with overnight lows in the lower to middle 50s. .LONG TERM...(Monday through Friday) Issued at 159 PM MDT Fri Jun 9 2023 Active weathe55r continues with chances for showers and storms. Below normal temperatures are expected to start the week, before warming back up closer to normal. The upper pattern at the start of the long term period has the area sandwiched between two low pressure systems - one over the Great Lakes region and another over the southwestern CONUS. Westerly flow backs to the southwest with the nearing trough in the Tuesday timeframe. Flow returns west-northwest for the latter half of the work week as that system slides southeast. PWAT values throughout the period remain generally around 0.75 to an inch, closer to 1.25 inches for eastern portions at times. Best chances for showers and storms currently expected at the beginning of the week before trailing off towards the latter part, though confidence also decreases past this range. Will need to continue to monitor for severe potential given the active pattern and better shear to work with than in recent days. && .AVIATION...(For the 00Z TAFS through 00Z Saturday evening) Issued at 604 PM MDT Fri Jun 9 2023 VFR conditions anticipated over the next 24 hours. Thunderstorms keep attempting to move into the vicinity of KGLD, but as the outflow boundaries slide southwest of the area, expect activity to diminish. Will have to watch the Colorado convection as it could impact KGLD later. KMCK might remain thunderstorm free although there is some fresh development around Imperial with an outflow boundary. Overnight, not expecting any weather significant to aviation. Thunderstorms possible again tomorrow afternoon, but most guidance suggests thunderstorms more likely during the evening, just after the end of the TAF period. && .GLD WATCHES/WARNINGS/ADVISORIES... KS...NONE. CO...NONE. NE...NONE. && UPDATE...RRH SHORT TERM...076 LONG TERM...CC AVIATION...RRH
Hazardous Weather Outlook National Weather Service Goodland KS 1206 PM MDT Fri Jun 9 2023 COZ090>092-KSZ001>004-013>016-027>029-041-042-NEZ079>081-101815- Yuma-Kit Carson-Cheyenne-Rawlins-Decatur-Norton-Sherman-Thomas- Sheridan-Graham-Wallace-Logan-Gove-Greeley-Wichita-Dundy-Hitchcock- Red Willow- 1206 PM MDT Fri Jun 9 2023 /106 PM CDT Fri Jun 9 2023/ This hazardous weather outlook is for extreme southwest Nebraska... northwest Kansas and east central Colorado. .DAY ONE...TODAY AND TONIGHT... A few strong to severe thunderstorms are expected this afternoon going into the night. The primary hazards include hail up to one inch in diameter, wind gusts up to 65 mph, and locally heavy rainfall which could produce flash flooding. The area of greatest concern is generally along and south of Nebraska border. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH FRIDAY... There will be a continued risk for flooding from prolonged heavy rainfall with any storms that develop during the weekend into early next week. A few strong to severe thunderstorms can not be completely ruled out Saturday and Sunday. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected. We would appreciate reports of severe weather and heavy rainfall via telephone and social media.
Special Weather Statement
National Weather Service Goodland KS
649 PM CDT Fri Jun 9 2023
KSZ042-100015-
Wichita KS-
649 PM CDT Fri Jun 9 2023
...A strong thunderstorm will impact portions of southeastern Wichita
County through 715 PM CDT...
At 649 PM CDT, Doppler radar was tracking a strong thunderstorm 12
miles southwest of Modoc, moving northeast at 15 mph.
HAZARD...Wind gusts up to 50 mph and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
This storm will remain over mainly rural areas of southeastern
Wichita County.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 3854 10113 3827 10112 3826 10126
TIME...MOT...LOC 2349Z 212DEG 14KT 3832 10118
MAX HAIL SIZE...0.88 IN
MAX WIND GUST...50 MPH
CASpecial Weather Statement
National Weather Service Goodland KS
559 PM MDT Fri Jun 9 2023
KSZ027-028-041-042-100030-
Wichita KS-Wallace KS-Greeley KS-Logan KS-
559 PM MDT Fri Jun 9 2023
...Strong thunderstorms will impact portions of central Wichita,
eastern Wallace, southwestern Logan and northeastern Greeley Counties
through 630 PM MDT/730 PM CDT/...
At 557 PM MDT/657 PM CDT/, Doppler radar was tracking strong
thunderstorms along a line extending from 6 miles southwest of Sharon
Springs to 6 miles north of Horace to 11 miles east of Tribune.
Movement was northeast at 25 mph.
HAZARD...Wind gusts of 50 to 55 mph and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Strong thunderstorms will be near...
Sharon Springs around 610 PM MDT.
Other locations in the path of these storms include Leoti and
Wallace.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 3852 10188 3885 10188 3914 10152 3914 10148
3877 10148 3858 10113 3853 10113 3834 10154
TIME...MOT...LOC 2357Z 231DEG 24KT 3882 10182 3857 10181 3843 10156
MAX HAIL SIZE...0.88 IN
MAX WIND GUST...55 MPH
CASpecial Weather Statement
National Weather Service Goodland KS
559 PM MDT Fri Jun 9 2023
COZ091-092-100030-
Kit Carson County CO-Cheyenne County CO-
559 PM MDT Fri Jun 9 2023
...Strong thunderstorms will impact portions of western Cheyenne and
western Kit Carson Counties in east central Colorado through 630 PM
MDT...
At 558 PM MDT, Doppler radar was tracking strong thunderstorms along
a line extending from 5 miles south of Arickaree School to 3 miles
south of Seibert to 11 miles southeast of Boyero. Movement was east
at 20 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 damage to outdoor objects is
possible.
Strong thunderstorms will be near...
Seibert around 605 PM MDT.
This includes Interstate 70 in Colorado between mile markers 390 and
425.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 3957 10315 3957 10271 3917 10241 3870 10287
3876 10317
TIME...MOT...LOC 2358Z 290DEG 18KT 3967 10306 3924 10287 3878 10317
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH
CCSpecial Weather Statement
National Weather Service Goodland KS
619 PM MDT Fri Jun 9 2023
COZ091-092-100045-
Kit Carson County CO-Cheyenne County CO-
619 PM MDT Fri Jun 9 2023
...A strong thunderstorm will impact portions of northeastern
Cheyenne and southeastern Kit Carson Counties in east central
Colorado through 645 PM MDT...
At 619 PM MDT, Doppler radar was tracking a strong thunderstorm 14
miles northeast of Cheyenne Wells, moving northeast at 20 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 damage to outdoor objects is
possible.
This storm will remain over mainly rural areas of northeastern
Cheyenne and southeastern Kit Carson Counties in east central
Colorado.
This includes Highway 385 between mile markers 161 and 162, and
between mile markers 164 and 174.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 3897 10236 3925 10221 3917 10205 3898 10205
3886 10217
TIME...MOT...LOC 0019Z 211DEG 16KT 3899 10222
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH
CCSpecial Weather Statement
National Weather Service Goodland KS
626 PM MDT Fri Jun 9 2023
KSZ027-041-100100-
Wallace KS-Greeley KS-
626 PM MDT Fri Jun 9 2023
...A strong thunderstorm will impact portions of southwestern Wallace
and northwestern Greeley Counties through 700 PM MDT...
At 626 PM MDT, Doppler radar was tracking a strong thunderstorm 6
miles south of Weskan, or 13 miles southwest of Sharon Springs,
moving north at 10 mph.
HAZARD...Wind gusts up to 50 mph and penny size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Weskan.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 3872 10205 3883 10205 3899 10196 3889 10182
3885 10187 3864 10187
TIME...MOT...LOC 0026Z 199DEG 9KT 3877 10194
MAX HAIL SIZE...0.75 IN
MAX WIND GUST...50 MPH
CCSpecial Weather Statement
National Weather Service Goodland KS
635 PM MDT Fri Jun 9 2023
COZ091-092-100100-
Kit Carson County CO-Cheyenne County CO-
635 PM MDT Fri Jun 9 2023
...A strong thunderstorm will impact portions of western Cheyenne and
southeastern Kit Carson Counties in east central Colorado through 700
PM MDT...
At 635 PM MDT, Doppler radar was tracking a strong thunderstorm 13
miles south of Stratton, 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 damage to outdoor objects is
possible.
This storm will remain over mainly rural areas of western Cheyenne
and southeastern Kit Carson Counties in east central Colorado,
including the following locations... Firstview.
This includes the following highways...
Interstate 70 in Colorado between mile markers 410 and 424.
Highway 385 between mile markers 162 and 163, and between mile
markers 175 and 183.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 3895 10298 3932 10277 3924 10221 3864 10254
TIME...MOT...LOC 0035Z 282DEG 25KT 3911 10265
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...50 MPH
CCThe Goodland radar (KGLD), 105 km away, was scanning. The volume nearest the first event began at 00:46 UTC.
2 hail. Local standard time, as filed.
The hail may have been larger in size. The heavy rainfall made size estimation difficult while driving.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Colorado in 2023Every state in 2023This day in weather historyWarnings in Colorado, 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: 1114178, 1114179.