390 
WUUS55 KBOU 222322
SVRBOU
COC075-121-230015-
/O.NEW.KBOU.SV.W.0123.260622T2322Z-260623T0015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Denver CO
522 PM MDT Mon Jun 22 2026

The National Weather Service in Denver has issued a

* Severe Thunderstorm Warning for...
  South Central Logan County in northeastern Colorado...
  Northeastern Washington County in northeastern Colorado...

* Until 615 PM MDT.

* At 522 PM MDT, a severe thunderstorm was located 6 miles southeast
  of Atwood, or 10 miles south of Sterling, moving south at 20 mph.

  HAZARD...Tennis ball size hail and 60 mph wind gusts.

  SOURCE...Trained spotters reported.

  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...
  Merino, Prewitt Reservoir, Burdett, Midway, Fremont Butte and
  Messex.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone outdoors should move to shelter inside a well-built structure
and stay away from windows. This storm has produced dangerous hail
and is capable of producing damaging winds.

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 4050 10347 4051 10299 4019 10281 4020 10346
      4036 10346 4044 10347
TIME...MOT...LOC 2322Z 350DEG 18KT 4048 10322

TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...OBSERVED
MAX HAIL SIZE...2.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Meier

351 
WWUS55 KBOU 222352
SVSBOU

Severe Weather Statement
National Weather Service Denver CO
552 PM MDT Mon Jun 22 2026

COC075-230002-
/O.CAN.KBOU.SV.W.0123.000000T0000Z-260623T0015Z/
Logan CO-
552 PM MDT Mon Jun 22 2026

...SEVERE THUNDERSTORM WARNING IS CANCELLED 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 has
been cancelled.

A Severe Thunderstorm Watch remains in effect until 900 PM MDT Monday
for a portion of northeast Colorado.

&&

LAT...LON 4041 10345 4043 10295 4019 10281 4020 10346
      4036 10346
TIME...MOT...LOC 2322Z 350DEG 18KT 4048 10322

$$


COC121-230015-
/O.CON.KBOU.SV.W.0123.000000T0000Z-260623T0015Z/
Washington CO-
552 PM MDT Mon Jun 22 2026

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM MDT FOR
NORTHEASTERN WASHINGTON COUNTY...

At 552 PM MDT, a severe thunderstorm was located 10 miles north of
Akron, moving south at 35 mph.

HAZARD...Tennis ball size hail and 60 mph wind gusts.

SOURCE...Trained spotters reported.

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...
  Burdett, Midway and Fremont Butte.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone outdoors should move to shelter inside a well-built structure
and stay away from windows. This storm has produced dangerous hail
and is capable of producing damaging winds.

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 4041 10345 4043 10295 4019 10281 4020 10346
      4036 10346
TIME...MOT...LOC 2322Z 353DEG 29KT 4054 10319

TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...OBSERVED
MAX HAIL SIZE...2.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Meier

351 
WWUS55 KBOU 222352
SVSBOU

Severe Weather Statement
National Weather Service Denver CO
552 PM MDT Mon Jun 22 2026

COC075-230002-
/O.CAN.KBOU.SV.W.0123.000000T0000Z-260623T0015Z/
Logan CO-
552 PM MDT Mon Jun 22 2026

...SEVERE THUNDERSTORM WARNING IS CANCELLED 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 has
been cancelled.

A Severe Thunderstorm Watch remains in effect until 900 PM MDT Monday
for a portion of northeast Colorado.

&&

LAT...LON 4041 10345 4043 10295 4019 10281 4020 10346
      4036 10346
TIME...MOT...LOC 2322Z 350DEG 18KT 4048 10322

$$


COC121-230015-
/O.CON.KBOU.SV.W.0123.000000T0000Z-260623T0015Z/
Washington CO-
552 PM MDT Mon Jun 22 2026

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM MDT FOR
NORTHEASTERN WASHINGTON COUNTY...

At 552 PM MDT, a severe thunderstorm was located 10 miles north of
Akron, moving south at 35 mph.

HAZARD...Tennis ball size hail and 60 mph wind gusts.

SOURCE...Trained spotters reported.

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...
  Burdett, Midway and Fremont Butte.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone outdoors should move to shelter inside a well-built structure
and stay away from windows. This storm has produced dangerous hail
and is capable of producing damaging winds.

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 4041 10345 4043 10295 4019 10281 4020 10346
      4036 10346
TIME...MOT...LOC 2322Z 353DEG 29KT 4054 10319

TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...OBSERVED
MAX HAIL SIZE...2.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Meier

827 
WWUS55 KBOU 230007
SVSBOU

Severe Weather Statement
National Weather Service Denver CO
607 PM MDT Mon Jun 22 2026

COC121-230017-
/O.CAN.KBOU.SV.W.0123.000000T0000Z-260623T0015Z/
Washington CO-
607 PM MDT Mon Jun 22 2026

...SEVERE THUNDERSTORM WARNING IS CANCELLED FOR NORTHEASTERN
WASHINGTON COUNTY...

The Severe Thunderstorm Warning that was previously in effect has
been reissued for Washington County and is in effect until 645 PM
MDT. Please refer to that bulletin for the latest severe weather
information.

A Severe Thunderstorm Watch remains in effect until 900 PM MDT Monday
for a portion of northeast Colorado.

&&

LAT...LON 4041 10345 4043 10295 4019 10281 4020 10346
      4036 10346
TIME...MOT...LOC 2352Z 353DEG 29KT 4030 10316

$$

Meier