Idaho, 1999

Damaging Winds in Idaho, June 15, 1999

June 15, 1999 · NWS BOI · 2 events in 2 counties and zones

Scattered thunderstorms moved through southern Canyon and western Ada counties and produced damaging wind gusts. Numerous trees and powerlines were downed throughout the area.

Where it happened

Every event with a place to put it. 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
$40,000
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.

What happened

The episode as NWS BOI wrote it up.

Scattered thunderstorms moved through southern Canyon and western Ada counties and produced damaging wind gusts. Numerous trees and powerlines were downed throughout the area. A 75 foot tall tree fell on a home in Nampa and a porch was torn off another home. In Boise, the I-84 connector was closed due to downed powerlines.

The radar

The Boise radar (KCBX), 27 km away, was scanning. The volume nearest the first event began at 00:24 UTC.

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Event by event

2 thunderstorm wind. Local standard time, as filed.

Thunderstorm Wind, Canyon

When
June 15, 5:25 PM MST to 6:15 PM MST
Where
Canyon County, Melba to Nampa
Measured
55 kt (63 mph)
Property damage
$40,000
Reported by
NWS EMPLOYEE(OFF DUTY)
Coordinates
43.370, -116.530

Thunderstorm Wind, Ada

When
June 15, 5:50 PM MST to 7:00 PM MST
Where
Ada County, Kuna to Boise
Measured
55 kt (63 mph)
Reported by
LAW ENFORCEMENT
Coordinates
43.480, -116.400

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 Idaho in 1999Every state in 1999This day in weather historyWarnings in Idaho, 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: 5705070, 5705069.