111 
WUUS55 KBOU 212157
SVRBOU
COC075-212230-
/O.NEW.KBOU.SV.W.0016.260521T2157Z-260521T2230Z/

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

The National Weather Service in Denver has issued a

* Severe Thunderstorm Warning for...
  Northwestern Logan County in northeastern Colorado...

* Until 430 PM MDT.

* At 357 PM MDT, a severe thunderstorm was located 4 miles west of
  North Sterling Reservoir, or 14 miles northwest 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...
  North Sterling Reservoir and Padroni.

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.

Tornadoes can develop quickly from severe thunderstorms. Seek shelter
immediately in an interior room on the lowest floor of a well-built
structure.

&&

LAT...LON 4069 10344 4094 10345 4095 10312 4071 10307
TIME...MOT...LOC 2157Z 257DEG 16KT 4079 10335

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

$$

63

468 
WWUS55 KBOU 212209
SVSBOU

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

COC075-212230-
/O.CON.KBOU.SV.W.0016.000000T0000Z-260521T2230Z/
Logan CO-
409 PM MDT Thu May 21 2026

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM MDT FOR
NORTHWESTERN LOGAN COUNTY...

At 409 PM MDT, a severe thunderstorm was located over North Sterling
Reservoir, or 14 miles north 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...
  North Sterling Reservoir and Padroni.

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.

Tornadoes can develop quickly from severe thunderstorms. Seek shelter
immediately in an interior room on the lowest floor of a well-built
structure.

&&

LAT...LON 4069 10340 4094 10337 4095 10312 4071 10307
TIME...MOT...LOC 2157Z 257DEG 16KT 4079 10335

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

$$

63