Idaho, 1997

Flash Flooding and Heavy Rain in Idaho, August 11, 1997

August 11, 1997 · NWS PIH · 4 events in 1 county or zone

3 flash flood, 1 heavy rain, as filed by the National Weather Service.

Where it happened

Every event with a place to put it; 4 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
4

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.

The radar

The Pocatello radar (KSFX), 61 km away, was scanning. The volume nearest the first event began at 21:31 UTC.

Open the radar archive at this moment

Event by event

3 flash flood, 1 heavy rain. Local standard time, as filed.

Heavy Rain, Bannock

When
August 11, 2:30 PM MST to 3:15 PM MST
Where
Bannock County, 3 mi W of Robin
Coordinates
42.669, -112.225 (the zone’s center; the record gives no point)

1.5 inches or rain. Hail up to 1/2 inch diameter covered hillsides immediately east of Garden Creek Gap.

Flash Flood, Bannock

When
August 11, 3:00 PM MST to 3:30 PM MST
Where
Bannock County, Robin
Coordinates
42.669, -112.225 (the zone’s center; the record gives no point)

Garden Creek in Robin area rose about 2 feet due to heavy rain.

Flash Flood, Bannock

When
August 11, 3:00 PM MST to 3:30 PM MST
Where
Bannock County, 3 mi W of Robin
Coordinates
42.669, -112.225 (the zone’s center; the record gives no point)

Extremely heavy rain produced flooding and severe field erosion immediately east of the Garden Creek Gap.

Flash Flood, Bannock

When
August 11, 3:00 PM MST to 3:30 PM MST
Where
Bannock County, 4 mi W of Robin
Coordinates
42.669, -112.225 (the zone’s center; the record gives no point)

Flooding washed large rock and other debris on Arimo Rad in Garden Creek Gap. Over one foot of debris in several locations.

What these are

Heavy Rain
Rainfall totals unusual for the place and season that did not produce a flood.
Flash Flood
Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Idaho in 1997Every state in 1997This day in weather historyWarnings in Idaho, August 1997

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: 5618159, 5618157, 5618158, 5618160.