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Home Return to list Severe Thunderstorm Warning 0106 Issued by the Denver / Boulder Forecast Office
Action: New Issued At: 2026-06-21 15:25:59
573
WUUS55 KBOU 212025
SVRBOU
COC121-212100-
/O.NEW.KBOU.SV.W.0106.260621T2025Z-260621T2100Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Denver CO
225 PM MDT Sun Jun 21 2026
The National Weather Service in Denver has issued a
* Severe Thunderstorm Warning for...
Southeastern Washington County in northeastern Colorado...
* Until 300 PM MDT.
* At 225 PM MDT, a severe thunderstorm was located 10 miles north of
Arickaree School, or 23 miles southeast of Akron, moving east at 25
mph.
HAZARD...60 mph wind gusts and half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
* Locations impacted include...
Mainly rural areas of Southeastern Washington County.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter inside a well-built structure and stay away from
windows. This storm is capable of producing damaging winds and large
hail.
Tornadoes can develop quickly from severe thunderstorms. Seek shelter
immediately in an interior room on the lowest floor of a well-built
structure.
&&
LAT...LON 3972 10298 4000 10303 4001 10279 4000 10279
4000 10280 3972 10280
TIME...MOT...LOC 2025Z 276DEG 22KT 3989 10299
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
63
Action: Continued Issued At: 2026-06-21 15:37:00
912
WWUS55 KBOU 212036
SVSBOU
Severe Weather Statement
National Weather Service Denver CO
236 PM MDT Sun Jun 21 2026
COC121-212100-
/O.CON.KBOU.SV.W.0106.000000T0000Z-260621T2100Z/
Washington CO-
236 PM MDT Sun Jun 21 2026
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 3 PM MDT FOR
SOUTHEASTERN WASHINGTON COUNTY...
At 236 PM MDT, a severe thunderstorm was located 12 miles northeast
of Arickaree School, or 26 miles southeast of Akron, moving east at
25 mph.
HAZARD...60 mph wind gusts and half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Mainly rural areas of Southeastern Washington County.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter inside a well-built structure and stay away from
windows. This storm is capable of producing damaging winds and large
hail.
Tornadoes can develop quickly from severe thunderstorms. Seek shelter
immediately in an interior room on the lowest floor of a well-built
structure.
&&
LAT...LON 3972 10298 4000 10303 4001 10279 4000 10279
4000 10280 3972 10280
TIME...MOT...LOC 2025Z 276DEG 22KT 3988 10298
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
63
Action: Continued Issued At: 2026-06-21 15:46:00
194
WWUS55 KBOU 212045
SVSBOU
Severe Weather Statement
National Weather Service Denver CO
245 PM MDT Sun Jun 21 2026
COC121-212100-
/O.CON.KBOU.SV.W.0106.000000T0000Z-260621T2100Z/
Washington CO-
245 PM MDT Sun Jun 21 2026
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 3 PM MDT FOR
EAST CENTRAL WASHINGTON COUNTY...
At 245 PM MDT, a severe thunderstorm was located 14 miles north of
Cope, or 29 miles southeast of Akron, moving east at 25 mph.
HAZARD...60 mph wind gusts and half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Mainly rural areas of East Central Washington County.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter inside a well-built structure and stay away from
windows. This storm is capable of producing damaging winds and large
hail.
Tornadoes can develop quickly from severe thunderstorms. Seek shelter
immediately in an interior room on the lowest floor of a well-built
structure.
&&
LAT...LON 3972 10291 4001 10289 4001 10279 4000 10279
4000 10280 3972 10280
TIME...MOT...LOC 2036Z 276DEG 22KT 3988 10290
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
63
Action: Expired Issued At: 2026-06-21 15:55:00
371
WWUS55 KBOU 212054
SVSBOU
Severe Weather Statement
National Weather Service Denver CO
254 PM MDT Sun Jun 21 2026
COC121-212104-
/O.EXP.KBOU.SV.W.0106.000000T0000Z-260621T2100Z/
Washington CO-
254 PM MDT Sun Jun 21 2026
...SEVERE THUNDERSTORM WARNING WILL EXPIRE AT 3 PM MDT FOR EAST
CENTRAL WASHINGTON COUNTY...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.
A Severe Thunderstorm Watch remains in effect until 800 PM MDT Sunday
for a portion of northeast Colorado.
&&
LAT...LON 3972 10291 4001 10289 4001 10279 4000 10279
4000 10280 3972 10280
TIME...MOT...LOC 2045Z 276DEG 22KT 3987 10283
$$
63
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