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Home Return to list Severe Thunderstorm Warning 0411 Issued by the Denver / Boulder Forecast Office
Action: New Issued At: 2026-09-20 23:29:43
238
WUUS55 KBOU 210429
SVRBOU
COC073-210515-
/O.NEW.KBOU.SV.W.0411.260921T0429Z-260921T0515Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Denver CO
1029 PM MDT Sun Sep 20 2026
The National Weather Service in Denver has issued a
* Severe Thunderstorm Warning for...
Southeastern Lincoln County in east central Colorado...
* Until 1115 PM MDT.
* At 1029 PM MDT, a severe thunderstorm was located 13 miles east of
Karval, or 45 miles southeast of Limon, moving southeast 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...
Mainly rural areas of Southeastern Lincoln 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.
&&
LAT...LON 3857 10343 3888 10337 3886 10316 3869 10316
3869 10317 3853 10317 3852 10326
TIME...MOT...LOC 0429Z 293DEG 19KT 3869 10331
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MV
Action: Continued Issued At: 2026-09-20 23:46:43
601
WWUS55 KBOU 210446
SVSBOU
Severe Weather Statement
National Weather Service Denver CO
1046 PM MDT Sun Sep 20 2026
COC073-210515-
/O.CON.KBOU.SV.W.0411.000000T0000Z-260921T0515Z/
Lincoln CO-
1046 PM MDT Sun Sep 20 2026
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 PM MDT
FOR SOUTHEASTERN LINCOLN COUNTY...
At 1046 PM MDT, a severe thunderstorm was located 19 miles south of
Boyero, or 50 miles southeast of Limon, moving southeast at 20 mph.
HAZARD...60 mph wind gusts and half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Mainly rural areas of Southeastern Lincoln County.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter inside a well-built structure and stay away from
windows. This storm is capable of producing damaging winds and large
hail.
&&
LAT...LON 3854 10332 3885 10328 3886 10316 3869 10316
3869 10317 3853 10317 3852 10322 3852 10327
TIME...MOT...LOC 0429Z 293DEG 19KT 3869 10330
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MV
Action: Expired Issued At: 2026-09-21 00:06:58
007
WWUS55 KBOU 210506
SVSBOU
Severe Weather Statement
National Weather Service Denver CO
1106 PM MDT Sun Sep 20 2026
COC073-210516-
/O.EXP.KBOU.SV.W.0411.000000T0000Z-260921T0515Z/
Lincoln CO-
1106 PM MDT Sun Sep 20 2026
...SEVERE THUNDERSTORM WARNING WILL EXPIRE AT 1115 PM MDT FOR
SOUTHEASTERN LINCOLN COUNTY...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire. However, small hail
is still possible.
A Severe Thunderstorm Watch remains in effect until 300 AM MDT for a
portion of east central Colorado.
&&
LAT...LON 3854 10332 3885 10328 3886 10316 3869 10316
3869 10317 3853 10317 3852 10322 3852 10327
TIME...MOT...LOC 0446Z 293DEG 19KT 3865 10320
$$
MV
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