Colorado, 1991

Tornado and Hail in Colorado, June 1, 1991

June 1, 1991 · NWS DEN · 16 events in 6 counties and zones

12 hail, 3 thunderstorm wind, 1 tornado, as filed by the National Weather Service.

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
16

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.

Event by event

12 hail, 3 thunderstorm wind, 1 tornado. Local standard time, as filed.

Tornado, Washington

When
June 1, 1:00 AM MST
Where
Washington County
Rating
F1
Path length
6 mi
Path width
100 yd
Coordinates
40.150, -103.030

Hail, Jefferson

When
June 1, 3:45 PM CST
Where
Jefferson County
Measured
1.75 in hail
Coordinates
39.430, -105.270

Hail, Jefferson

When
June 1, 4:00 PM CST
Where
Jefferson County
Measured
0.75 in hail
Coordinates
39.620, -105.020

Hail, Jefferson

When
June 1, 4:15 PM CST
Where
Jefferson County
Measured
1 in hail
Coordinates
39.730, -105.100

Hail, Jefferson

When
June 1, 4:45 PM CST
Where
Jefferson County
Measured
1.75 in hail
Coordinates
39.800, -105.080

Hail, Arapahoe

When
June 1, 4:46 PM CST
Where
Arapahoe County
Measured
1.75 in hail
Coordinates
39.620, -105.000

Hail, Denver

When
June 1, 4:59 PM CST
Where
Denver County
Measured
1.75 in hail
Coordinates
39.670, -104.930

Hail, Jefferson

When
June 1, 5:07 PM CST
Where
Jefferson County
Measured
1 in hail
Coordinates
39.800, -105.080

Hail, Denver

When
June 1, 5:17 PM CST
Where
Denver County
Measured
1.25 in hail
Coordinates
39.700, -104.980

Thunderstorm Wind, Adams

When
June 1, 5:20 PM CST
Where
Adams County
Measured
50 kt (58 mph)
Coordinates
39.830, -105.030

Hail, Adams

When
June 1, 5:24 PM CST
Where
Adams County
Measured
1.75 in hail
Coordinates
39.920, -104.350

Hail, Jefferson

When
June 1, 5:35 PM CST
Where
Jefferson County
Measured
1 in hail
Coordinates
39.880, -105.130

Thunderstorm Wind, Boulder

When
June 1, 6:05 PM CST
Where
Boulder County
Measured
70 kt (81 mph)
Coordinates
40.170, -105.100

Thunderstorm Wind, Boulder

When
June 1, 6:20 PM CST
Where
Boulder County
Measured
57 kt (66 mph)
Coordinates
40.170, -105.100

Hail, Jefferson

When
June 1, 6:34 PM CST
Where
Jefferson County
Measured
0.75 in hail
Coordinates
39.730, -105.170

Hail, Adams

When
June 1, 6:34 PM CST
Where
Adams County
Measured
0.75 in hail
Coordinates
39.880, -104.950

What these are

Tornado
A violently rotating column of air in contact with the ground and extending from a thunderstorm, filed with its path, width and Fujita or Enhanced Fujita rating from the damage survey.
Hail
Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
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 1991Every state in 1991This day in weather historyThe tornado archive for Colorado, 1991Warnings in Colorado, June 1991

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: 9985796, 9985797, 9985798, 9985799, 9985800, 9985801, 9985802, 9985803, 9985804, 9985805, 9985806, 9985807, 9985808, 9985809, 9985810, 9985811.