Colorado, 2026

Hail and Damaging Wind in Colorado, June 1, 2026

June 1, 2026 · NWS BOU · 35 events in 9 counties and zones

75 inch in diameter. Additional severe thunderstorms brought hail up to 2 inch in diameter to the eastern Colorado plains.

Where it happened

Every event with a place to put it. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

Open the live radar over this ground

The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
35

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS BOU wrote it up.

A severe thunderstorm tracked across northern Denver and nearby suburbs producing hail up to 1.75 inch in diameter. Additional severe thunderstorms brought hail up to 2 inch in diameter to the eastern Colorado plains.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Denver/Boulder, CO wrote its last area forecast discussion before the first event at Jun 1, 10:58 AM MST, 1 hour 7 minutes earlier. Its key messages:

  • A chance for strong and severe thunderstorms this afternoon and again Tuesday afternoon, with locally heavy rain possible.
  • Thunderstorm chances will continue on Wednesday with lower threat for severe storms, however, locally heavy rain will be possible.
  • Trending warmer and drier by the end of the week.
Area forecast discussion, Jun 1, 10:58 AM MST, 1 hour 7 minutes before
Area Forecast Discussion
National Weather Service Denver/Boulder CO
1158 AM MDT Mon Jun 1 2026

.KEY MESSAGES...

- A chance for strong and severe thunderstorms this afternoon and
  again Tuesday afternoon, with locally heavy rain possible.

- Thunderstorm chances will continue on Wednesday with lower
  threat for severe storms, however, locally heavy rain will be
  possible.

- Trending warmer and drier by the end of the week.

&&

.DISCUSSION /Through Sunday/...
Issued at 231 AM MDT Mon Jun 1 2026

Already seeing sct high based showers and a few weak tstms across
portions of nern CO early this morning.  This appears to be
associated with some mid level instability and along the srn portion
of an upper level jet.  Latest data suggest this activity will
continue thru mid morning with a few stronger storms possible closer
to the WY-NE border area.

By aftn, SW flow aloft will remain over the area as easterly flow in
the lower levels occurs behind a weak cool front.  SBCAPE over the
plains will range from 1500-2000 j/kg by aftn with a favorable shear
profile.  Sct tstms will develop near Denver by 20z and then move
rapidly ENE across the plains by 00Z.  Damaging winds and large hail
will likely occur with a few of the storms, with a brief tornado or
two possible initially, before storms consolidate into a solid line.
Meanwhile, across the higher terrain tstm coverage will be more
widely sct.  Highs today will be in the upper 70s to lower 80s
across the plains.

On Tue, the flow aloft will remain SW with the low level flow
becoming more SSE across the plains.  Once again, SBCAPE will range
from 1500-2000 j/kg with a favorable shear profile.  However, not
sure where best focus for tstms will be in the aftn.  If a Denver
cyclone were to develop, then storms may fire off the DCVZ and then
move ENE across the plains, with a few svr storms possible.  Once
again over the higher terrain expect tstm coverage will be more
isold to wdly sct.  As for highs, readings will be in the upper 70's
to mid 80's over the plains.

By Wed, the flow aloft will become more zonal and weaken. Meanwhile,
will still see SSE low level flow across the plains with possibly a
Denver cyclone and associated DCVZ.  SBCAPE will still be in the
1500-2000 j/kg range by aftn so there will still be some threat of
isold svr storms.  In addition, storm motions will be slower so may
see some heavier rainfall in those areas that get storms.   Across
the higher terrain, storm coverage will generally remain widely sct.
Highs over nern CO will be in the lower to mid 80's.

For Thu and Fri, the flow aloft will remain nearly zonal as an upper
level trough moves across the nrn Rockies.  SBCAPE over the plains
will likely stay in the 1500-2000 j/kg range both days.  Overall,
focus for tstm development is hard to pinpoint this far out so will
just keep pops in the chc category.  Highs across the plains will
be in the 80's on Thu with mid 80's to lower 90's by Fri.

Looking ahead to next weekend, an upper level trough is fcst to
develop over the wrn US with the flow aloft becoming more SSW.  For
now it looks drier with warmer temps.

&&

.AVIATION /18Z TAFS through 18Z Tuesday/...
Issued at 1158 AM MDT Mon Jun 1 2026

East to southeast winds have increased moisture across the area
and brought stratocumulus clouds at 3,500 to 5,000 feet. These
clouds will burn off soon as the airmass warms.  This increase in
moisture will fuel thunderstorm development this afternoon
beginning around 19Z. Main time frame for a thunderstorm at DEN
will be 20Z to 23Z. Hail (possibly large), heavy rain, and wind
gusts to 50 knots will be possible under the stronger storms.
Models agree there should only be one round of thunderstorms this
afternoon, so by 22-00Z, expect storms to be east of DEN. 

Low clouds will develop after midnight between 08Z and 10Z and
then linger most of Tuesday morning. Ceilings are expected to be
in the 1000 to 3000 foot range, with a slight chance (20%) of
ceilings under 1,000 feet.  A Denver cyclone is expected to help
form the low clouds. Then mid morning winds become southeast. This
will end the threat of lower ceilings (~1000 feet) and slowly
erode the remaining low clouds. Another round of afternoon
thunderstorms is expected, beginning around 21Z. There's a chance
the airmass is capped, with the best chance for this occurring
north of Denver.  

&&

.BOU WATCHES/WARNINGS/ADVISORIES...
None.

&&

DISCUSSION...RPK
AVIATION...12

In the hours before

Special weather statement, Jun 1, 7:22 AM MST, 4 hours 43 minutes before
Special Weather Statement
National Weather Service Denver CO
822 AM MDT Mon Jun 1 2026

COZ042-044-048-011500-
Logan County CO-Morgan County CO-Northeast Weld County CO-
822 AM MDT Mon Jun 1 2026

...A STRONG THUNDERSTORM WILL IMPACT NORTHERN MORGAN...WEST CENTRAL
LOGAN AND EASTERN WELD COUNTIES UNTIL 9 AM MDT...

At 822 AM MDT, Doppler radar was tracking a strong thunderstorm 4
miles south of Stoneham, or 22 miles north of Fort Morgan, moving
northeast at 30 mph.

HAZARD...Wind gusts up to 40 mph and penny size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
  Pawnee Pass, Willard, Stoneham and Logan Corners.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the weather situation closely and be alert for threatening
weather conditions.

&&

LAT...LON 4052 10371 4059 10379 4083 10345 4063 10324
      4045 10363
TIME...MOT...LOC 1422Z 230DEG 28KT 4055 10365

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...40 MPH

09
Special weather statement, Jun 1, 7:58 AM MST, 4 hours 7 minutes before
Special Weather Statement
National Weather Service Denver CO
858 AM MDT Mon Jun 1 2026

COZ048-011545-
Logan County CO-
858 AM MDT Mon Jun 1 2026

...A STRONG THUNDERSTORM WILL IMPACT WEST CENTRAL LOGAN COUNTY UNTIL
945 AM MDT...

At 858 AM MDT, Doppler radar was tracking a strong thunderstorm near
Logan Corners, or 8 miles west of Sterling, moving northeast at 15
mph.

HAZARD...Wind gusts up to 40 mph and penny size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
  Northwestern Sterling, North Sterling Reservoir and Logan Corners.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the weather situation closely and be alert for threatening
weather conditions.

&&

LAT...LON 4058 10334 4069 10348 4084 10330 4070 10306
TIME...MOT...LOC 1458Z 225DEG 13KT 4066 10335

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...40 MPH

09

The radar

The Denver radar (KFTG), 42 km away, was scanning. The volume nearest the first event began at 19:03 UTC.

Open the radar archive at this moment

Event by event

33 hail, 1 funnel cloud, 1 thunderstorm wind. Local standard time, as filed.

Hail, Denver

When
June 1, 12:05 PM MST to 12:07 PM MST
Where
Denver County, 6.01 mi WNW of Denver
Measured
1 in hail
Reported by
Trained Spotter
Coordinates
39.750, -105.040

Hail, Denver

When
June 1, 12:06 PM MST to 12:09 PM MST
Where
Denver County, 3.26 mi WNW of Denver
Measured
0.75 in hail
Reported by
Public
Coordinates
39.740, -104.990

The report was received via mPING.

Hail, Denver

When
June 1, 12:07 PM MST to 12:10 PM MST
Where
Denver County, 3.26 mi WNW of Denver
Measured
1 in hail
Reported by
NWS Employee
Coordinates
39.740, -104.990

Hail, Denver

When
June 1, 12:10 PM MST to 12:13 PM MST
Where
Denver County, 4.83 mi W of Denver
Measured
1 in hail
Reported by
Trained Spotter
Coordinates
39.740, -105.020

Hail, Denver

When
June 1, 12:10 PM MST to 12:13 PM MST
Where
Denver County, 3.97 mi WNW of Denver
Measured
1.75 in hail
Reported by
Public
Coordinates
39.750, -105.000

Hail, Denver

When
June 1, 12:11 PM MST to 12:14 PM MST
Where
Denver County, 2.66 mi W of Denver
Measured
1 in hail
Reported by
Public
Coordinates
39.730, -104.980

The report was received via mPING.

Hail, Denver

When
June 1, 12:14 PM MST to 12:17 PM MST
Where
Denver County, 2.13 mi W of Denver
Measured
1.5 in hail
Reported by
Trained Spotter
Coordinates
39.730, -104.970

Hail, Denver

When
June 1, 12:15 PM MST to 12:19 PM MST
Where
Denver County, 2.66 mi W of Denver
Measured
1 in hail
Reported by
Public
Coordinates
39.730, -104.980

Most of the hail was smaller.

Hail, Denver

When
June 1, 12:19 PM MST to 12:22 PM MST
Where
Denver County, 0.87 mi NE of Denver
Measured
1 in hail
Reported by
Public
Coordinates
39.740, -104.920

The report was received via mPING.

Hail, Denver

When
June 1, 12:22 PM MST to 12:28 PM MST
Where
Denver County, 1.48 mi NNE of Denver
Measured
1.75 in hail
Reported by
Trained Spotter
Coordinates
39.750, -104.920

Hail, Denver

When
June 1, 12:23 PM MST to 12:25 PM MST
Where
Denver County, 0.87 mi NE of Denver
Measured
1 in hail
Reported by
Public
Coordinates
39.740, -104.920

The report was received via mPING.

Hail, Denver

When
June 1, 12:23 PM MST to 12:29 PM MST
Where
Denver County, 1.27 mi WNW of Denver
Measured
1.25 in hail
Reported by
Trained Spotter
Coordinates
39.740, -104.950

The report was received via mPING.

Hail, Denver

When
June 1, 12:30 PM MST to 12:31 PM MST
Where
Denver County, 1.74 mi NE of Denver
Measured
0.88 in hail
Reported by
Trained Spotter
Coordinates
39.750, -104.910

Hail, Douglas

When
June 1, 12:31 PM MST to 12:33 PM MST
Where
Douglas County, 3.27 mi WSW of Highlands Ranch
Measured
1.5 in hail
Reported by
Public
Coordinates
39.540, -105.030

Hail, Douglas

When
June 1, 12:34 PM MST to 12:37 PM MST
Where
Douglas County, 4.34 mi E of Greenland
Measured
1.25 in hail
Reported by
Public
Coordinates
39.160, -104.750

The report was received via mPING.

Funnel Cloud, Douglas

When
June 1, 12:34 PM MST to 12:39 PM MST
Where
Douglas County, 3.98 mi ENE of Louviers
Reported by
Trained Spotter
Coordinates
39.490, -104.930

The funnel dropped from the south west edge of the storm. Was clean and wide for about 5 minutes, then became ropy before disappearing.

Hail, Arapahoe

When
June 1, 12:40 PM MST to 12:41 PM MST
Where
Arapahoe County, 6.01 mi WNW of (Bkf)buckley Air Force Base
Measured
1 in hail
Reported by
Public
Coordinates
39.720, -104.860

The report was received via mPING.

Hail, Adams

When
June 1, 12:50 PM MST to 1:05 PM MST
Where
Adams County, 2.11 mi NE of Aurora
Measured
1.25 in hail
Reported by
Public
Coordinates
39.750, -104.820

The report was received via mPING.

Hail, Arapahoe

When
June 1, 1:30 PM MST
Where
Arapahoe County, 4.25 mi E of (Bkf)buckley Air Force Base
Measured
1 in hail
Reported by
Broadcast Media
Coordinates
39.700, -104.670

Hail, Arapahoe

When
June 1, 1:32 PM MST
Where
Arapahoe County, 5.22 mi ENE of Arapahoe Park
Measured
1 in hail
Reported by
Public
Coordinates
39.670, -104.600

The report was received via mPING.

Hail, Adams

When
June 1, 1:40 PM MST to 1:45 PM MST
Where
Adams County, 0.87 mi SE of Watkins
Measured
1 in hail
Reported by
Public
Coordinates
39.740, -104.590

The report was received via mPING.

Hail, Adams

When
June 1, 1:55 PM MST to 2:10 PM MST
Where
Adams County, 1.27 mi ESE of Manila
Measured
1.75 in hail
Reported by
Broadcast Media
Coordinates
39.760, -104.480

Hail, Adams

When
June 1, 2:06 PM MST to 2:18 PM MST
Where
Adams County, 2.23 mi WSW of Bennett
Measured
1 in hail
Reported by
Public
Coordinates
39.740, -104.470

The report was received via mPING.

Hail, Adams

When
June 1, 2:06 PM MST to 2:18 PM MST
Where
Adams County, 0.87 mi SW of Bennett
Measured
1.25 in hail
Reported by
Public
Coordinates
39.740, -104.440

The report was received via mPING.

Hail, Adams

When
June 1, 2:08 PM MST to 2:20 PM MST
Where
Adams County, 1.27 mi ESE of Bennett
Measured
2 in hail
Reported by
Trained Spotter
Coordinates
39.740, -104.410

Hail, Arapahoe

When
June 1, 2:08 PM MST to 2:20 PM MST
Where
Arapahoe County, 10.19 mi W of Byers
Measured
1.5 in hail
Reported by
Public
Coordinates
39.740, -104.410

The report was received via mPING.

Hail, Arapahoe

When
June 1, 2:08 PM MST to 2:20 PM MST
Where
Arapahoe County, 10.19 mi W of Byers
Measured
1.75 in hail
Reported by
Public
Coordinates
39.740, -104.410

The report was received via mPING.

Hail, Douglas

When
June 1, 2:25 PM MST
Where
Douglas County, 2.14 mi SSE of Parker
Measured
0.88 in hail
Reported by
Trained Spotter
Coordinates
39.490, -104.760

Hail, Adams

When
June 1, 2:34 PM MST to 2:45 PM MST
Where
Adams County, 3.61 mi NNW of Strasburg
Measured
1.5 in hail
Reported by
NWS Employee
Coordinates
39.770, -104.320

Hail, Weld

When
June 1, 2:38 PM MST to 2:39 PM MST
Where
Weld County, 5.5 mi NNW of Carr
Measured
1 in hail
Reported by
Public
Coordinates
40.970, -104.920

Hail, Washington

When
June 1, 3:21 PM MST to 3:25 PM MST
Where
Washington County, 6.35 mi E of Woodrow
Measured
2 in hail
Reported by
Public
Coordinates
39.980, -103.460

The report was received via mPING.

Hail, Elbert

When
June 1, 3:54 PM MST to 3:55 PM MST
Where
Elbert County, 3.01 mi ENE of Elizabeth
Measured
1 in hail
Reported by
Public
Coordinates
39.370, -104.550

The report was received via mPING.

Hail, Elbert

When
June 1, 3:56 PM MST to 4:01 PM MST
Where
Elbert County, 1.07 mi E of Simla
Measured
1.5 in hail
Reported by
Trained Spotter
Coordinates
39.170, -104.010

Hail, Lincoln

When
June 1, 4:40 PM MST
Where
Lincoln County, 0.87 mi SE of Limon
Measured
1 in hail
Reported by
Broadcast Media
Coordinates
39.260, -103.690

Thunderstorm Wind, Phillips

When
June 1, 5:28 PM MST
Where
Phillips County, 7.6 mi S of Holyoke
Measured
52 kt (60 mph) measured gust
Reported by
Mesonet
Coordinates
40.470, -102.300

Mesonet station CO048 located along US 385 south of Holyoke.

What these are

Hail
Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
Funnel Cloud
A rotating column of cloud extending from a thunderstorm that did not reach the ground.
Thunderstorm Wind
Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Colorado in 2026Every state in 2026This day in weather historyWarnings in Colorado, June 2026

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 1330787, 1330788, 1330789, 1330790, 1330791, 1330792, 1330793, 1330794, 1330795, 1330796, 1330797, 1330798, 1330799, 1330800, 1330802, 1330838, 1330803, 1330804, 1330806, 1330805, 1330807, 1330809, 1330808, 1330810, 1330811, 1330812, 1330813, 1330816, 1330815, 1330814, 1330818, 1330819, 1330820, 1330821, 1330822.