The snowstorm of November 17 to 19, 1999
A snowstorm NOAA ranked in 1 region on its Regional Snowfall Index, strongest in the Northern Rockies and Plains.
What the offices filed during it
Winter weather episodes east of the Rockies from the day before the storm began to the day after it ended, colored by kind.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The storm by region
Each region’s thresholds are its own, so the same depth of snow counts for more in the South than in the Northeast.
| Region | Index | Category | Area with snow (sq mi) | People under snow | Above the top threshold (sq mi) | People above it |
|---|---|---|---|---|---|---|
| Northern Rockies and Plains | 0.32 | Below category 1 | 343,557 | 2,570,110 | 0 | 0 |
The Regional Snowfall Index is NOAA’s ranking of snowstorms east of the Rockies by how much snow fell, over how wide an area and on how many people, region by region: the area and the population above four snowfall thresholds set for each region, weighted against that region’s own history. A storm is scored in each region it reached, on a scale from 1, notable, to 5, extreme.
The toll the offices filed
- Events
- 12
- Deaths
- 0
- Injuries
- 0
- Damage
- None recorded
- Episodes
- 6
Every winter weather episode the Weather Service filed east of the Rockies in these dates. A few may belong to another system on the same days. 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.
Episode by episode
- Blizzard and High Wind in Alaska, November 16 to 17, 1999The weather front from a strong low over the eastern gulf of Alaska moved north while strong high pressure remained over the Canadian Arctic, producing blizzard conditions and strong winds over the Arctic Slope Coast.
- Blizzard in Alaska, November 17 to 18, 1999A strong storm moved northeast over the Bering Sea with it's associated weather front moving to south of Saint Lawrence Island before dissipating the afternoon of the 18th.
- Heavy Snow in South Dakota, November 18, 1999A storm system brought 6 to 10 inches of snow in portions of the Black Hills and northwestern South Dakota.
- Heavy Snow in Wyoming, November 18, 1999A storm system brought 6 to 10 inches of snow to portions of the Bear Lodge Mountains.
- Heavy Snow in Montana, November 18, 1999Moisture rotating around a 996 mb low pressure system in South Dakota brought heavy snowfall to extreme southeastern Montana. The snow began during the morning of the 18th as the low moved into Western South Dakota.
- Heavy Snow in Alaska, November 20 to 21, 1999A small low pressure center northeast of Fairbanks intensified the afternoon of the 20th while the atmosphere destabilized and moist southwest flow began over the central Tanana Valley and Southern Upper Yukon Valley.Tanana Valley:Fairbanks Airport - 6.9"Co-op StationsWest Chena…
More
The snowstorm of November 14 to 17, 1999The snowstorm of November 21 to 24, 1999Snow nowEvery winter storm filed
Sources
NOAA NCEI Regional Snowfall Index, and the Storm Events Database for the episodes.