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Home Return to list Severe Thunderstorm Warning 0096 Issued by the Denver / Boulder Forecast Office
Action: New Issued At: 2026-06-20 15:13:26
263
WUUS55 KBOU 202013
SVRBOU
COC001-005-121-202100-
/O.NEW.KBOU.SV.W.0096.260620T2013Z-260620T2100Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Denver CO
213 PM MDT Sat Jun 20 2026
The National Weather Service in Denver has issued a
* Severe Thunderstorm Warning for...
Southeastern Adams County in northeastern Colorado...
Eastern Arapahoe County in northeastern Colorado...
Southwestern Washington County in northeastern Colorado...
* Until 300 PM MDT.
* At 213 PM MDT, a severe thunderstorm was located 4 miles north of
Cottonwood Valley, or 30 miles north of Limon, moving northeast at
25 mph.
HAZARD...Ping pong ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect
wind damage to roofs, siding, and trees.
* Locations impacted include...
Last Chance, Woodlin School, Lindon and Cottonwood Valley.
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.
A Tornado Watch remains in effect until 900 PM MDT Saturday for a
portion of northeast Colorado.
&&
LAT...LON 3974 10390 3978 10393 3998 10350 3969 10332
3957 10375 3957 10377
PARTITION...608005
TIME...MOT...LOC 2012Z 242DEG 21KT 3969 10378
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
63
Action: Continued Issued At: 2026-06-20 15:27:27
551
WWUS55 KBOU 202027
SVSBOU
Severe Weather Statement
National Weather Service Denver CO
227 PM MDT Sat Jun 20 2026
COC001-005-202037-
/O.CAN.KBOU.SV.W.0096.000000T0000Z-260620T2100Z/
Adams CO-Arapahoe CO-
227 PM MDT Sat Jun 20 2026
...SEVERE THUNDERSTORM WARNING IS CANCELLED FOR ADAMS AND EASTERN
ARAPAHOE COUNTIES...
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.
&&
LAT...LON 3985 10371 3998 10350 3969 10332 3960 10368
3960 10370 3971 10371
PARTITION...608005
TIME...MOT...LOC 2013Z 242DEG 21KT 3970 10378
$$
COC121-202100-
/O.CON.KBOU.SV.W.0096.000000T0000Z-260620T2100Z/
Washington CO-
227 PM MDT Sat Jun 20 2026
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 3 PM MDT FOR
SOUTHWESTERN WASHINGTON COUNTY...
At 227 PM MDT, a severe thunderstorm was located 5 miles west of Last
Chance, or 32 miles north of Limon, moving northeast at 25 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Woodlin School, Last Chance and Lindon.
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.
A Tornado Watch remains in effect until 900 PM MDT Saturday for a
portion of northeast Colorado.
&&
LAT...LON 3985 10371 3998 10350 3969 10332 3960 10368
3960 10370 3971 10371
TIME...MOT...LOC 2013Z 242DEG 21KT 3970 10378
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
63
Action: Cancelled Issued At: 2026-06-20 15:27:27
551
WWUS55 KBOU 202027
SVSBOU
Severe Weather Statement
National Weather Service Denver CO
227 PM MDT Sat Jun 20 2026
COC001-005-202037-
/O.CAN.KBOU.SV.W.0096.000000T0000Z-260620T2100Z/
Adams CO-Arapahoe CO-
227 PM MDT Sat Jun 20 2026
...SEVERE THUNDERSTORM WARNING IS CANCELLED FOR ADAMS AND EASTERN
ARAPAHOE COUNTIES...
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.
&&
LAT...LON 3985 10371 3998 10350 3969 10332 3960 10368
3960 10370 3971 10371
PARTITION...608005
TIME...MOT...LOC 2013Z 242DEG 21KT 3970 10378
$$
COC121-202100-
/O.CON.KBOU.SV.W.0096.000000T0000Z-260620T2100Z/
Washington CO-
227 PM MDT Sat Jun 20 2026
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 3 PM MDT FOR
SOUTHWESTERN WASHINGTON COUNTY...
At 227 PM MDT, a severe thunderstorm was located 5 miles west of Last
Chance, or 32 miles north of Limon, moving northeast at 25 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Woodlin School, Last Chance and Lindon.
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.
A Tornado Watch remains in effect until 900 PM MDT Saturday for a
portion of northeast Colorado.
&&
LAT...LON 3985 10371 3998 10350 3969 10332 3960 10368
3960 10370 3971 10371
TIME...MOT...LOC 2013Z 242DEG 21KT 3970 10378
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
63
Action: Continued Issued At: 2026-06-20 15:47:43
227
WWUS55 KBOU 202047
SVSBOU
Severe Weather Statement
National Weather Service Denver CO
247 PM MDT Sat Jun 20 2026
COC121-202100-
/O.CON.KBOU.SV.W.0096.000000T0000Z-260620T2100Z/
Washington CO-
247 PM MDT Sat Jun 20 2026
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 3 PM MDT FOR
SOUTHWESTERN WASHINGTON COUNTY...
At 247 PM MDT, a severe thunderstorm was located 7 miles south of
Woodrow, or 27 miles south of Fort Morgan, moving northeast at 20
mph. Another severe thunderstorm was located near Last Chance and
was moving northeast at 20 mph.
HAZARD...60 mph wind gusts and half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Woodlin School and Last Chance.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter inside a well-built structure and stay away from
windows. This storm is capable of producing damaging winds and large
hail.
A Tornado Watch remains in effect until 900 PM MDT Saturday for a
portion of northeast Colorado.
&&
LAT...LON 3988 10366 3998 10350 3976 10336 3972 10351
3972 10358 3979 10364 3984 10369
TIME...MOT...LOC 2027Z 209DEG 16KT 3981 10367
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
63
Action: Expired Issued At: 2026-06-20 15:59:58
549
WWUS55 KBOU 202059
SVSBOU
Severe Weather Statement
National Weather Service Denver CO
259 PM MDT Sat Jun 20 2026
COC121-202109-
/O.EXP.KBOU.SV.W.0096.000000T0000Z-260620T2100Z/
Washington CO-
259 PM MDT Sat Jun 20 2026
...SEVERE THUNDERSTORM WARNING WILL EXPIRE AT 3 PM MDT FOR
SOUTHWESTERN WASHINGTON COUNTY...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However, small
hail, gusty winds, and heavy rain are still possible with this
thunderstorm.
A Tornado Watch remains in effect until 900 PM MDT Saturday for a
portion of northeast Colorado.
&&
LAT...LON 3988 10366 3998 10350 3976 10336 3972 10351
3972 10358 3979 10364 3984 10369
TIME...MOT...LOC 2047Z 209DEG 16KT 3989 10361
$$
63
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