Colorado, 1999Heavy Snow in Colorado, May 9 to 10, 1999
May 9 to 10, 1999 · NWS BOU · 2 events in 2 counties and zones
Heavy snow developed in portions of the North Central Mountains and Middle Park. Silverthorne received 7 inches of new snow overnight, while William's Fork Dam registered 6 inches.
Every event with a place to put it; 2 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
Open the live radar over this ground
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 2
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.
Heavy snow developed in portions of the North Central Mountains and Middle Park. Silverthorne received 7 inches of new snow overnight, while William's Fork Dam registered 6 inches.
Heavy Snow, Summit County/Mosquito Range/Indian Peaks / S Grand / Summit / W Clear Creek / W Gilpin / Sw Boulder / Nw Park
- When
- May 9, 5:00 PM MST to May 10, 5:00 AM MST
- Where
- Summit County/Mosquito Range/Indian Peaks / S Grand / Summit / W Clear Creek / W Gilpin / Sw Boulder / Nw Park forecast zone
- Reported by
- TRAINED SPOTTER
- Coordinates
- 39.726, -105.675 (the zone’s center; the record gives no point)
Heavy Snow, Middle Park / C Grand
- When
- May 9, 5:00 PM MST to May 10, 5:00 AM MST
- Where
- Middle Park / C Grand forecast zone
- Reported by
- TRAINED SPOTTER
- Coordinates
- 39.869, -106.117 (the zone’s center; the record gives no point)
- 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.
- Tornadoes and Flash Flood in Texas, May 9, 1999$172,000 · F0 · 29 events
- Hail and Damaging Winds in Oklahoma, May 9 to 10, 1999$75,000 · 1 in hail · 34 events
- Damaging Winds in Iowa, May 9, 1999$102,000 · 65 kt wind · 2 events
- Tornadoes and Flash Flooding in South Dakota, May 9 to 26, 19991 injured · F0 · 38 events
- Hail and Damaging Winds in Tennessee, May 9 to 23, 19994 injured · 1.75 in hail · 13 events
- Tornado and Hail in Oklahoma, May 9 to 10, 1999$34,000 · F0 · 13 events
- Damaging Wind in Texas, May 9, 1999$50,000 · 55 kt wind · 1 event
- Tornado and Flash Flood in Texas, May 9, 19991 injured · $3,000 · F0 · 8 events
- Hail in Florida, May 9, 19991.75 in hail · 13 events
- Tornado and Hail in South Dakota, May 9, 1999F0 · 13 events
- Hail and Damaging Wind in Texas, May 9, 19991.75 in hail · 12 events
- Flooding in South Dakota, May 9 to 31, 19996 events
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: 5699848, 5699849.