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Home Return to list Severe Thunderstorm Warning 0104 Issued by the Denver / Boulder Forecast Office
Action: New Issued At: 2026-06-20 23:47:12
318
WUUS55 KBOU 210446
SVRBOU
COC087-123-210530-
/O.NEW.KBOU.SV.W.0104.260621T0446Z-260621T0530Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Denver CO
1046 PM MDT Sat Jun 20 2026
The National Weather Service in Denver has issued a
* Severe Thunderstorm Warning for...
West Central Morgan County in northeastern Colorado...
South Central Weld County in northeastern Colorado...
* Until 1130 PM MDT.
* At 1046 PM MDT, a severe thunderstorm was located near Riverside
Reservoir, or 24 miles east of Greeley, moving east at 30 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...
Wiggins, Riverside Reservoir, Orchard, Goodrich, Jackson Reservoir
and Masters.
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.
&&
LAT...LON 4023 10444 4044 10435 4037 10399 4013 10406
TIME...MOT...LOC 0446Z 286DEG 23KT 4032 10433
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
63
Action: Continued Issued At: 2026-06-20 23:58:27
490
WWUS55 KBOU 210458
SVSBOU
Severe Weather Statement
National Weather Service Denver CO
1058 PM MDT Sat Jun 20 2026
COC087-123-210530-
/O.CON.KBOU.SV.W.0104.000000T0000Z-260621T0530Z/
Morgan CO-Weld CO-
1058 PM MDT Sat Jun 20 2026
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM MDT
FOR WEST CENTRAL MORGAN AND SOUTH CENTRAL WELD COUNTIES...
At 1058 PM MDT, a severe thunderstorm was located near Riverside
Reservoir, or 24 miles west of Fort Morgan, moving southeast at 25
mph.
HAZARD...60 mph wind gusts and half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Wiggins, Riverside Reservoir, Orchard, Goodrich, Jackson Reservoir
and Masters.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter inside a well-built structure and stay away from
windows. This storm is capable of producing damaging winds and large
hail.
&&
LAT...LON 4023 10444 4043 10429 4037 10399 4013 10406
TIME...MOT...LOC 0446Z 292DEG 22KT 4030 10433
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
63
Action: Continued Issued At: 2026-06-21 00:12:43
924
WWUS55 KBOU 210512
SVSBOU
Severe Weather Statement
National Weather Service Denver CO
1112 PM MDT Sat Jun 20 2026
COC087-123-210530-
/O.CON.KBOU.SV.W.0104.000000T0000Z-260621T0530Z/
Morgan CO-Weld CO-
1112 PM MDT Sat Jun 20 2026
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM MDT
FOR WEST CENTRAL MORGAN AND SOUTHEASTERN WELD COUNTIES...
At 1112 PM MDT, a severe thunderstorm was located 4 miles west of
Wiggins, or 19 miles west of Fort Morgan, moving southeast 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...
Wiggins, Orchard, Goodrich and Jackson Reservoir.
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.
&&
LAT...LON 4015 10415 4019 10429 4040 10412 4040 10411
4039 10411 4037 10399 4013 10406
TIME...MOT...LOC 0458Z 304DEG 23KT 4026 10425
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
09
Action: Cancelled Issued At: 2026-06-21 00:22:13
206
WWUS55 KBOU 210521
SVSBOU
Severe Weather Statement
National Weather Service Denver CO
1121 PM MDT Sat Jun 20 2026
COC087-123-210531-
/O.CAN.KBOU.SV.W.0104.000000T0000Z-260621T0530Z/
Morgan CO-Weld CO-
1121 PM MDT Sat Jun 20 2026
...SEVERE THUNDERSTORM WARNING IS CANCELLED FOR WEST CENTRAL MORGAN
AND SOUTHEASTERN WELD COUNTIES...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled. However, gusty winds are
still possible with this thunderstorm.
&&
LAT...LON 4015 10415 4019 10429 4040 10412 4040 10411
4039 10411 4037 10399 4013 10406
TIME...MOT...LOC 0512Z 304DEG 23KT 4021 10415
$$
09
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