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Home Return to list Severe Thunderstorm Warning 0102 Issued by the Denver / Boulder Forecast Office
Action: New Issued At: 2026-06-20 22:38:10
534
WUUS55 KBOU 210337
SVRBOU
COC075-210415-
/O.NEW.KBOU.SV.W.0102.260621T0337Z-260621T0415Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Denver CO
937 PM MDT Sat Jun 20 2026
The National Weather Service in Denver has issued a
* Severe Thunderstorm Warning for...
Southwestern Logan County in northeastern Colorado...
* Until 1015 PM MDT.
* At 937 PM MDT, a severe thunderstorm was located near Pawnee Pass,
or 15 miles west of Sterling, 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...
Sterling, Logan Corners, Pawnee Pass and Atwood.
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 4058 10357 4078 10352 4069 10313 4050 10322
TIME...MOT...LOC 0337Z 291DEG 20KT 4068 10347
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
63
Action: Continued Issued At: 2026-06-20 22:47:55
845
WWUS55 KBOU 210347
SVSBOU
Severe Weather Statement
National Weather Service Denver CO
947 PM MDT Sat Jun 20 2026
COC075-210415-
/O.CON.KBOU.SV.W.0102.000000T0000Z-260621T0415Z/
Logan CO-
947 PM MDT Sat Jun 20 2026
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM MDT
FOR SOUTHWESTERN LOGAN COUNTY...
At 947 PM MDT, a severe thunderstorm was located near Logan Corners,
or 11 miles west of Sterling, moving east at 25 mph.
HAZARD...Golf ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect wind
damage to roofs, siding, and trees.
Locations impacted include...
Sterling, Logan Corners and Atwood.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Anyone outdoors should move to shelter inside a well-built structure
and stay away from windows. This storm is capable of producing
dangerous hail and damaging winds.
&&
LAT...LON 4056 10345 4074 10337 4069 10313 4050 10322
TIME...MOT...LOC 0337Z 291DEG 20KT 4067 10346
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
63
Action: Continued Issued At: 2026-06-20 23:00:10
148
WWUS55 KBOU 210359
SVSBOU
Severe Weather Statement
National Weather Service Denver CO
959 PM MDT Sat Jun 20 2026
COC075-210415-
/O.CON.KBOU.SV.W.0102.000000T0000Z-260621T0415Z/
Logan CO-
959 PM MDT Sat Jun 20 2026
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM MDT
FOR SOUTH CENTRAL LOGAN COUNTY...
At 959 PM MDT, a severe thunderstorm was located near Sterling,
moving east at 35 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...
Sterling and Atwood.
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 4053 10335 4072 10325 4069 10313 4050 10322
TIME...MOT...LOC 0347Z 288DEG 28KT 4065 10336
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
63
Action: Expired Issued At: 2026-06-20 23:07:10 263 WWUS55 KBOU 210406 SVSBOU Severe Weather Statement National Weather Service Denver CO 1006 PM MDT Sat Jun 20 2026 COC075-210416- /O.EXP.KBOU.SV.W.0102.000000T0000Z-260621T0415Z/ Logan CO- 1006 PM MDT Sat Jun 20 2026 ...SEVERE THUNDERSTORM WARNING WILL EXPIRE AT 1015 PM MDT FOR SOUTH CENTRAL LOGAN COUNTY... The storm which prompted the warning has weakened below severe limits, and has exited the warned area. Therefore, the warning will be allowed to expire. && LAT...LON 4053 10335 4072 10325 4069 10313 4050 10322 TIME...MOT...LOC 0359Z 288DEG 28KT 4061 10324 $$ 63 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||