Idaho, 1999

Winter Storm and Heavy Snow in Idaho, February 2, 1999

February 2, 1999 · NWS BOI · 3 events in 3 counties and zones

During the day on February 2nd a winter storm snarled traffic in the Treasure Valley and brought local heavy snow to the Lower Treasure Valley and the Boise Mountains. In the Upper Treasure Valley 3 to 4 inches of snow fell and caused major traffic disruptions.

Where it happened

Every event with a place to put it; 3 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
3

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 BOI wrote it up.

During the day on February 2nd a winter storm snarled traffic in the Treasure Valley and brought local heavy snow to the Lower Treasure Valley and the Boise Mountains. In the Upper Treasure Valley 3 to 4 inches of snow fell and caused major traffic disruptions. Over 100 auto accidents were reported around Boise. In the Lower Treasure Valley 3 to 5 inches of snow fell with a local report of 7 inches at Midvale. In the Boise Mountains Placerville received 6 inches of new snow.

The radar

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

Open the radar archive at this moment

Event by event

2 heavy snow, 1 winter storm. Local standard time, as filed.

Winter Storm, Upper Treasure Valley

When
February 2, 8:00 AM MST to 2:00 PM MST
Where
Upper Treasure Valley forecast zone
Reported by
NEWSPAPER
Coordinates
43.129, -115.960 (the zone’s center; the record gives no point)

Heavy Snow, Lower Treasure Valley

When
February 2, 8:00 AM MST to 2:00 PM MST
Where
Lower Treasure Valley forecast zone
Reported by
TRAINED SPOTTER
Coordinates
43.746, -116.564 (the zone’s center; the record gives no point)

Heavy Snow, Boise Mountains

When
February 2, 8:00 AM MST to 2:00 PM MST
Where
Boise Mountains forecast zone
Reported by
TRAINED SPOTTER
Coordinates
43.602, -115.335 (the zone’s center; the record gives no point)

What these are

Winter Storm
A storm that brought snow, sleet or freezing rain at warning levels, usually over several hours or days.
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 Idaho in 1999Every state in 1999This day in weather historyWarnings in Idaho, February 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: 5682596, 5682597, 5682598.