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Home Return to list Severe Thunderstorm Warning 0410 Issued by the Denver / Boulder Forecast Office
Action: New Issued At: 2026-09-20 23:09:12
610
WUUS55 KBOU 210409
SVRBOU
COC123-210500-
/O.NEW.KBOU.SV.W.0410.260921T0409Z-260921T0500Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Denver CO
1009 PM MDT Sun Sep 20 2026
The National Weather Service in Denver has issued a
* Severe Thunderstorm Warning for...
Southwestern Weld County in northeastern Colorado...
* Until 1100 PM MDT.
* At 1009 PM MDT, a severe thunderstorm was located 5 miles south of
Gilcrest, or 14 miles south of Greeley, 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...
Platteville, Hudson, Keenesburg, Gilcrest, Milton Reservoir,
Prospect Valley, Roggen, Peckham and Fort St Vrain.
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 4033 10482 4030 10427 4000 10443 4000 10455
4020 10491
TIME...MOT...LOC 0408Z 288DEG 21KT 4022 10475
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MV
Action: Continued Issued At: 2026-09-20 23:28:13
069
WWUS55 KBOU 210427
SVSBOU
Severe Weather Statement
National Weather Service Denver CO
1027 PM MDT Sun Sep 20 2026
COC123-210500-
/O.CON.KBOU.SV.W.0410.000000T0000Z-260921T0500Z/
Weld CO-
1027 PM MDT Sun Sep 20 2026
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 11 PM MDT FOR
SOUTHWESTERN WELD COUNTY...
At 1027 PM MDT, a severe thunderstorm was located 4 miles south of
Milton Reservoir, or 18 miles south of Greeley, moving southeast at
25 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Hudson, Keenesburg, Milton Reservoir, Prospect Valley and Roggen.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter inside a well-built structure and stay away from
windows. This storm is capable of producing damaging winds and large
hail.
&&
LAT...LON 4032 10474 4030 10427 4000 10443 4000 10455
4017 10479
TIME...MOT...LOC 0409Z 293DEG 19KT 4021 10475
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MV
Action: Cancelled Issued At: 2026-09-20 23:47:13
607
WWUS55 KBOU 210447
SVSBOU
Severe Weather Statement
National Weather Service Denver CO
1047 PM MDT Sun Sep 20 2026
COC123-210457-
/O.CAN.KBOU.SV.W.0410.000000T0000Z-260921T0500Z/
Weld CO-
1047 PM MDT Sun Sep 20 2026
...SEVERE THUNDERSTORM WARNING IS CANCELLED FOR SOUTHWESTERN WELD
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 has been cancelled. However, small hail is
still possible with this thunderstorm.
&&
LAT...LON 4032 10474 4030 10427 4000 10443 4000 10455
4017 10479
TIME...MOT...LOC 0427Z 293DEG 19KT 4017 10463
$$
MV
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