Colorado, 1999

Heavy Snow in Colorado, April 1 to 2, 1999

April 1 to 2, 1999 · NWS BOU · 7 events in 7 counties and zones

Moist upslope conditions allowed for heavy snow to develop in and near the Front Range Foothills. In the foothills, snowfall totals included: 10 inches at Aspen Park and Evergreen, 9 inches at Hot Sulphur Springs and Turkey Creek, 8 inches at Idaho Springs, Genessee and St.

Where it happened

Every event with a place to put it; 7 filed by county or forecast zone are drawn at its center, in a lighter ring. 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

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The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
7

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.

Moist upslope conditions allowed for heavy snow to develop in and near the Front Range Foothills. In the foothills, snowfall totals included: 10 inches at Aspen Park and Evergreen, 9 inches at Hot Sulphur Springs and Turkey Creek, 8 inches at Idaho Springs, Genessee and St. Mary's Glacier, 7 inches at Aspen Springs, Crow Hill, Intercanyon and Lake George, with 4 to 6 inches elsewhere. Along the Urban Corridor, snowfall totals included: 10 inches, 5 miles south-southeast of Sedalia, 8 inches at Littleton, 7 inches at Morrison, 6 inches at Highlands Ranch and 4 miles northwest of Larkspur, 4 to 5 inches at the National Weather Service Office in Denver, 2 miles northwest of Louisville, Northglenn and Parker.

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

7 heavy snow. Local standard time, as filed.

Heavy Snow, Middle Park

When
April 1, 5:00 PM MST to April 2, 5:00 AM MST
Where
Middle Park forecast zone
Reported by
TRAINED SPOTTER
Coordinates
39.869, -106.117 (the zone’s center; the record gives no point)

Heavy Snow, Northern Front Range Foothills/Upper Laramie and Cache la Poudre River Basins

When
April 1, 5:00 PM MST to April 2, 5:00 AM MST
Where
Northern Front Range Foothills/Upper Laramie and Cache la Poudre River Basins forecast zone
Reported by
TRAINED SPOTTER
Coordinates
40.380, -105.410 (the zone’s center; the record gives no point)

Heavy Snow, Southern Front Range Foothills/Clear Creek Basin

When
April 1, 5:00 PM MST to April 2, 5:00 AM MST
Where
Southern Front Range Foothills/Clear Creek Basin forecast zone
Reported by
TRAINED SPOTTER
Coordinates
39.516, -105.413 (the zone’s center; the record gives no point)

Heavy Snow, South Park

When
April 1, 5:00 PM MST to April 2, 5:00 AM MST
Where
South Park forecast zone
Reported by
TRAINED SPOTTER
Coordinates
39.119, -105.717 (the zone’s center; the record gives no point)

Heavy Snow, Eastern Boulder County/Boulder and Vicinity

When
April 1, 5:00 PM MST to April 2, 5:00 AM MST
Where
Eastern Boulder County/Boulder and Vicinity forecast zone
Reported by
TRAINED SPOTTER
Coordinates
39.878, -105.220 (the zone’s center; the record gives no point)

Heavy Snow, Denver Metropolitan Area

When
April 1, 5:00 PM MST to April 2, 5:00 AM MST
Where
Denver Metropolitan Area forecast zone
Reported by
TRAINED SPOTTER
Coordinates
39.714, -104.707 (the zone’s center; the record gives no point)

Heavy Snow, Eastern Douglas and Western Elbert Counties/Castle Rock and Vicinity

When
April 1, 5:00 PM MST to April 2, 5:00 AM MST
Where
Eastern Douglas and Western Elbert Counties/Castle Rock and Vicinity forecast zone
Reported by
TRAINED SPOTTER
Coordinates
39.422, -104.468 (the zone’s center; the record gives no point)

What these are

Heavy Snow
Snowfall reaching the local warning threshold without the other hazards of a winter storm.

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, April 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 2026-10-01. Each event’s entry at NCEI: 5690548, 5690549, 5690550, 5690551, 5690552, 5690553, 5690554.