Idaho, 2017

Wildfire in Idaho, August 25 to 28, 2017

August 25 to 28, 2017 · NWS PIH · 1 event in 1 county or zone

The Deer Park was another human caused fire detected on August 25th which burned 17,588 acres of grass and brush 12 miles west of Rexburg. The fire was west of Menan Butte and north of Deer Park and that area had several wildfires this season.

The toll

Deaths
0
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 PIH wrote it up.

The Deer Park was another human caused fire detected on August 25th which burned 17,588 acres of grass and brush 12 miles west of Rexburg. The fire was west of Menan Butte and north of Deer Park and that area had several wildfires this season. No structures were threatened and the fire was 100 percent contained on August 28th.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Pocatello, ID wrote its last area forecast discussion before the first event at Aug 25, 9:20 AM MST, 2 hours 10 minutes earlier.

Area forecast discussion, Aug 25, 9:20 AM MST, 2 hours 10 minutes before
Area Forecast Discussion
National Weather Service Pocatello ID
1020 AM MDT Fri Aug 25 2017

.UPDATE...Weak convective activity ongoing this morning. Have seen
no lightning yet, but do expect isolated thunderstorms to develop
as the day progresses. Best precip chances remain in highlands
along MT, WY and UT borders, and have kept PoP highest in those
regions. Quick update this morning to spread precip across the
remainder of the morning, otherwise believe forecast to be in good
shape. DMH

&&

.PREV DISCUSSION... /issued 307 AM MDT Fri Aug 25 2017/

DISCUSSION...Chances for showers and thunderstorms will once more
lie in the Central Mountains this morning and afternoon with
little accumulating rainfall. There is not much instability for
severe weather, so we will look for general thunderstorms. After
the late evening hours, there will be little chance for additional
moisture consumption upon our land until early next week as high
pressure builds in. Expect much drier air to filter into the
region as well as warming air, bringing temperatures into the low
to mid 90s this weekend. Some cooling is expected in the early/mid
portion of next week as the high gradually moves away from the
area. NP/RS

FIRE WEATHER...Isolated to widely scattered afternoon thunderstorms
with the main focus of activity from Smiley Creek to Gilmore, Monida
Pass and Island Park. Thunderstorms will be mainly dry storms, with
precipitation ranging from a trace to 0.07 inches of rain and ending
by 2100 hours this evening. Saturday through Monday will be drier
and 3 to 4 degrees warmer under a ridge of high pressure. By
Tuesday, the latest models favor the center of a large high pressure
ridge located closer to Cedar City, Utah than the Four Corners area.
That shifts the flow of monsoon moisture more into the west side of
Idaho Tuesday afternoon, then shifting east over the Snake Plain
late Tuesday night and Wednesday. In terms of monsoon flow, much of
the moisture is diverted across Mexico off shore into the Pacific
rather than northward into Idaho. Having said that, a vigorous
disturbance comes inland through Washington next Wednesday, storms
that do develop could produce some strong outflow winds. RS

AVIATION...
Early AM radar shows light, constantly re-developing returns
drifting east across KSUN. The ASOS has not registered precip, and
HRRR/RAP suggest activity will diminish/push east. While a sprinkle
cannot be ruled out, will keep the AM forecast dry.

This afternoon, while we continue to trend to drier weather, sct
showers/isolated t-storms are expected for the east-central mntns,
Upper Snake Highlands, and Caribou Highlands. Will upgrade KDIJ from
VCSH to VCTS and maintain a dry forecast elsewhere. The HRRR
generates some precip over the Southern Highlands, but should this
occur, it should remain south of KBYI/KPIH/KIDA. As usual, we will
need to watch for gusty/erratic outflow winds at KDIJ. Otherwise,
forecast confidence today is high in VFR conditions everywhere.
Afternoon winds may gust to 20 kts at KPIH and KIDA.

Sat-Mon, a ridge of high pressure builds into the region. Forecast
confidence is very high in dry, VFR conditions, with smoke from
wildfire starts the only unknown variable. - KSmith/RS

AIR STAGNATION...Air Quality alerts remain in effect across
Custer and Lemhi counties where wildfires bring smoke through the
region. High resolution forecast models continue the smoke across
these areas today. A chance for moisture exists in the forecast
today with activity drying out by the late evening hours. After
this, there really won't be additional chances for rain until the
middle part of next week. NP/RS

&&

.PIH WATCHES/WARNINGS/ADVISORIES...
None.
&&

Event by event

1 wildfire. Local standard time, as filed.

Wildfire, Upper Snake River Plain

When
August 25, 11:30 AM MST to August 28, 8:00 PM MST
Where
Upper Snake River Plain forecast zone
Reported by
Park/Forest Service

The Deer Park was another human caused fire detected on August 25th which burned 17,588 acres of grass and brush 12 miles west of Rexburg. The fire was west of Menan Butte and north of Deer Park and that area had several wildfires this season. No structures were threatened and the fire was 100 percent contained on August 28th.

What these are

Wildfire
A fire burning in wildland vegetation, with its acreage and damage where known.

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

The same day elsewhere

More

Every storm in Idaho in 2017Every state in 2017This day in weather historyWarnings in Idaho, August 2017

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: 718428.