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Home Return to list Severe Thunderstorm Warning 0403 Issued by the Denver / Boulder Forecast Office
Action: New Issued At: 2026-09-20 15:05:29
931
WUUS55 KBOU 202005
SVRBOU
COC095-202045-
/O.NEW.KBOU.SV.W.0403.260920T2005Z-260920T2045Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Denver CO
205 PM MDT Sun Sep 20 2026
The National Weather Service in Denver has issued a
* Severe Thunderstorm Warning for...
Southeastern Phillips County in northeastern Colorado...
* Until 245 PM MDT.
* At 205 PM MDT, a severe thunderstorm was located 8 miles south of
Holyoke, moving east at 20 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. Hail may
accumulate on roadways causing hazardous travel.
* Locations impacted include...
Holyoke and Pleasant Valley.
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 4044 10237 4058 10237 4060 10205 4044 10205
TIME...MOT...LOC 2005Z 266DEG 16KT 4047 10231
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MV
Action: Continued Issued At: 2026-09-20 15:32:30
757
WWUS55 KBOU 202032
SVSBOU
Severe Weather Statement
National Weather Service Denver CO
232 PM MDT Sun Sep 20 2026
COC095-202045-
/O.CON.KBOU.SV.W.0403.000000T0000Z-260920T2045Z/
Phillips CO-
232 PM MDT Sun Sep 20 2026
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 PM MDT FOR
SOUTHEASTERN PHILLIPS COUNTY...
At 232 PM MDT, a severe thunderstorm was located 5 miles south of
Pleasant Valley, or 13 miles southeast of Holyoke, moving east at 25
mph.
HAZARD...Ping pong ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect wind
damage to roofs, siding, and trees. Hail may accumulate on
roadways causing hazardous travel.
Locations impacted include...
Mainly rural areas of Southeastern Phillips County.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter inside a well-built structure and stay away from
windows. This storm is capable of producing damaging winds and large
hail.
&&
LAT...LON 4044 10217 4055 10217 4054 10205 4044 10205
TIME...MOT...LOC 2005Z 268DEG 21KT 4047 10231
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MV
Action: Cancelled Issued At: 2026-09-20 15:38:00 852 WWUS55 KBOU 202037 SVSBOU Severe Weather Statement National Weather Service Denver CO 237 PM MDT Sun Sep 20 2026 COC095-202047- /O.CAN.KBOU.SV.W.0403.000000T0000Z-260920T2045Z/ Phillips CO- 237 PM MDT Sun Sep 20 2026 ...SEVERE THUNDERSTORM WARNING IS CANCELLED FOR SOUTHEASTERN PHILLIPS COUNTY... The storm which prompted the warning has moved out of the area. Therefore, the warning has been cancelled. && LAT...LON 4044 10217 4055 10217 4054 10205 4044 10205 TIME...MOT...LOC 2032Z 268DEG 21KT 4048 10209 $$ MV | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||