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Severe Thunderstorm Warning 0019
Issued by the Denver / Boulder Forecast Office

Action Issued Starts Expiration
New 2026-05-21 18:33:07 2026-05-21 18:32:00 2026-05-21 19:15:00
Continued 2026-05-21 18:53:08 2026-05-21 19:15:00


Action: New
Issued At: 2026-05-21 18:33:07

898 
WUUS55 KBOU 212332
SVRBOU
COC075-220015-
/O.NEW.KBOU.SV.W.0019.260521T2332Z-260522T0015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Denver CO
532 PM MDT Thu May 21 2026

The National Weather Service in Denver has issued a

* Severe Thunderstorm Warning for...
  West Central Logan County in northeastern Colorado...

* Until 615 PM MDT.

* At 532 PM MDT, a severe thunderstorm was located 5 miles north of
  Pawnee Pass, or 15 miles west of Sterling, moving east at 20 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, Logan Corners, North Sterling Reservoir and Pawnee Pass.

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 4060 10354 4081 10354 4084 10320 4061 10317
TIME...MOT...LOC 2332Z 259DEG 16KT 4070 10346

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

63


Action: Continued
Issued At: 2026-05-21 18:53:08

412 
WWUS55 KBOU 212352
SVSBOU

Severe Weather Statement
National Weather Service Denver CO
552 PM MDT Thu May 21 2026

COC075-220015-
/O.CON.KBOU.SV.W.0019.000000T0000Z-260522T0015Z/
Logan CO-
552 PM MDT Thu May 21 2026

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM MDT FOR
WEST CENTRAL LOGAN COUNTY...

At 552 PM MDT, a severe thunderstorm was located over Pawnee Pass, or
13 miles west of Sterling, moving east at 20 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...
  Sterling, Logan Corners and Pawnee Pass.

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 4060 10354 4076 10352 4078 10320 4061 10317
TIME...MOT...LOC 2332Z 254DEG 15KT 4061 10356

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

63



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