Idaho, 2022

Excessive Heat in Idaho, September 6 to 7, 2022

September 6 to 7, 2022 · NWS BOI · 1 event in 1 county or zone

An anomalously high upper level ridge stayed over the region for several days in early September. This led to 2 consecutive days of record high temperatures in the region, with many stations recording triple digit temperatures.

Where it happened

Every event with a place to put it; 1 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
1
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
1

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.

An anomalously high upper level ridge stayed over the region for several days in early September. This led to 2 consecutive days of record high temperatures in the region, with many stations recording triple digit temperatures. There was one recorded fatality from this extreme heat.

The radar

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

Open the radar archive at this moment

Event by event

1 excessive heat. Local standard time, as filed.

Excessive Heat, Lower Treasure Valley

When
September 6, 12:00 AM MST to September 7, 12:00 AM MST
Where
Lower Treasure Valley forecast zone
Deaths
0 direct, 1 indirect
Reported by
Newspaper
Coordinates
43.746, -116.564 (the zone’s center; the record gives no point)

Multiple newspapers reported on an infant that died after being left in a hot car in New Plymouth, Idaho on September 6th.

The people who died

As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.

EventDateAgeSexWhereKind
Excessive Heat, Lower Treasure Valley2022-09-060FemaleOtherIndirect

What these are

Excessive Heat
Heat at or above the local excessive heat warning criteria, or heat that caused deaths.

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

The same day elsewhere

More

Every storm in Idaho in 2022Every state in 2022This day in weather historyWarnings in Idaho, September 2022

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 2026-10-01. Each event’s entry at NCEI: 1047828.