Colorado, 1999

Damaging Wind in Colorado, June 17, 1999

June 17, 1999 · NWS GJT · 1 event in 1 county or zone

A line of thunderstorms moved across the Grand Junction area from the west, blowing down a number of trees. The steel vents on the roof of a bank were blown off and a large sign was blown off an office building.

Where it happened

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

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  • Hail
  • Winter weather
  • Heat and drought
  • Cold
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The toll

Deaths
0
Injuries
0
Property damage
$5,000
Crop damage
None recorded
Events
1

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 GJT wrote it up.

A line of thunderstorms moved across the Grand Junction area from the west, blowing down a number of trees. The steel vents on the roof of a bank were blown off and a large sign was blown off an office building. The peak wind speed measured at Walker Field Airport (KGJT) was 55 MPH (48 knots) Stronger winds were estimated by law enforcement personnel in other parts of the Grand Valley.

The radar

The Grand Junction radar (KGJX), 29 km away, was scanning. The volume nearest the first event began at 00:08 UTC.

Open the radar archive at this moment

Event by event

1 thunderstorm wind. Local standard time, as filed.

Thunderstorm Wind, Mesa

When
June 17, 5:08 PM MST to 5:18 PM MST
Where
Mesa County, Grand Jct
Measured
60 kt (69 mph)
Property damage
$5,000
Reported by
GENERAL PUBLIC
Coordinates
39.080, -108.550

What these are

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 1999Every state in 1999This day in weather historyWarnings in Colorado, June 1999

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: 5715343.