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Severe Thunderstorm Warning 0021
Issued by the Grand Junction Forecast Office

Action Issued Starts Expiration
New 2025-09-11 13:45:50 2025-09-11 13:45:00 2025-09-11 14:15:00
Continued 2025-09-11 14:02:50 2025-09-11 14:15:00
Cancelled 2025-09-11 14:02:50 2025-09-11 14:15:00
Expired 2025-09-11 14:11:50 2025-09-11 14:15:00


Action: New
Issued At: 2025-09-11 13:45:50

632 
WUUS55 KGJT 111845
SVRGJT
COC029-051-097-111915-
/O.NEW.KGJT.SV.W.0021.250911T1845Z-250911T1915Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Grand Junction CO
1245 PM MDT Thu Sep 11 2025

The National Weather Service in Grand Junction has issued a

* Severe Thunderstorm Warning for...
  Southwestern Pitkin County in west central Colorado...
  Northeastern Delta County in west central Colorado...
  Northwestern Gunnison County in west central Colorado...

* Until 115 PM MDT.

* At 1245 PM MDT, a severe thunderstorm was located 11 miles
  northeast of Paonia, or 38 miles northwest of Gunnison, moving
  northeast at 35 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...
  Marble, Redstone, and Somerset.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3883 10742 3898 10755 3924 10715 3902 10696
TIME...MOT...LOC 1845Z 235DEG 29KT 3895 10741 

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

$$

KAA


Action: Continued
Issued At: 2025-09-11 14:02:50

010 
WWUS55 KGJT 111902
SVSGJT

Severe Weather Statement
National Weather Service Grand Junction CO
102 PM MDT Thu Sep 11 2025

COC029-111911-
/O.CAN.KGJT.SV.W.0021.000000T0000Z-250911T1915Z/
Delta CO-
102 PM MDT Thu Sep 11 2025

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN DELTA COUNTY IS
CANCELLED...

The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

&&

LAT...LON 3893 10733 3903 10742 3924 10715 3902 10696
TIME...MOT...LOC 1901Z 235DEG 29KT 3903 10727 

$$

COC051-097-111915-
/O.CON.KGJT.SV.W.0021.000000T0000Z-250911T1915Z/
Pitkin CO-Gunnison CO-
102 PM MDT Thu Sep 11 2025

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 PM MDT
FOR SOUTHWESTERN PITKIN AND NORTHWESTERN GUNNISON COUNTIES...

At 101 PM MDT, a severe thunderstorm was located near Marble, or 35
miles south of Glenwood Springs, moving northeast at 35 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...
Marble.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3893 10733 3903 10742 3924 10715 3902 10696
TIME...MOT...LOC 1901Z 235DEG 29KT 3903 10727 

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

$$

KAA


Action: Cancelled
Issued At: 2025-09-11 14:02:50

010 
WWUS55 KGJT 111902
SVSGJT

Severe Weather Statement
National Weather Service Grand Junction CO
102 PM MDT Thu Sep 11 2025

COC029-111911-
/O.CAN.KGJT.SV.W.0021.000000T0000Z-250911T1915Z/
Delta CO-
102 PM MDT Thu Sep 11 2025

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN DELTA COUNTY IS
CANCELLED...

The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

&&

LAT...LON 3893 10733 3903 10742 3924 10715 3902 10696
TIME...MOT...LOC 1901Z 235DEG 29KT 3903 10727 

$$

COC051-097-111915-
/O.CON.KGJT.SV.W.0021.000000T0000Z-250911T1915Z/
Pitkin CO-Gunnison CO-
102 PM MDT Thu Sep 11 2025

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 PM MDT
FOR SOUTHWESTERN PITKIN AND NORTHWESTERN GUNNISON COUNTIES...

At 101 PM MDT, a severe thunderstorm was located near Marble, or 35
miles south of Glenwood Springs, moving northeast at 35 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...
Marble.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3893 10733 3903 10742 3924 10715 3902 10696
TIME...MOT...LOC 1901Z 235DEG 29KT 3903 10727 

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

$$

KAA


Action: Expired
Issued At: 2025-09-11 14:11:50

196 
WWUS55 KGJT 111911
SVSGJT

Severe Weather Statement
National Weather Service Grand Junction CO
111 PM MDT Thu Sep 11 2025

COC051-097-111920-
/O.EXP.KGJT.SV.W.0021.000000T0000Z-250911T1915Z/
Pitkin CO-Gunnison CO-
111 PM MDT Thu Sep 11 2025

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN PITKIN AND
NORTHWESTERN GUNNISON COUNTIES WILL EXPIRE AT 115 PM MDT...

The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However, gusty
winds are still possible with this thunderstorm.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Grand Junction.

&&

LAT...LON 3893 10733 3903 10742 3924 10715 3902 10696
TIME...MOT...LOC 1910Z 235DEG 29KT 3904 10725 

$$

KAA



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