Idaho, 2021

Wildfire in Idaho, July 21 to 23, 2021

July 21 to 23, 2021 · NWS PIH · 1 event in 1 county or zone

A 1,620 acre fire began via a lightning strike on July 21st and was contained on July 23rd. It was 4 miles southeast of Pauline.

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.

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  • Floods
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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.

A 1,620 acre fire began via a lightning strike on July 21st and was contained on July 23rd. It was 4 miles southeast of Pauline. It was mainly fueled by grass and brush and had about 100 personnel fighting it with aerial suppression involved.

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 Jul 21, 12:40 AM MST, 11 hours 20 minutes earlier.

Area forecast discussion, Jul 21, 12:40 AM MST, 11 hours 20 minutes before
Area Forecast Discussion
National Weather Service Pocatello ID
140 AM MDT Wed Jul 21 2021

.SHORT TERM...Today through Friday. Showers and thunderstorms will
continue through tomorrow across central and eastern Idaho.
Today's focus will be across the South Hills/Albion Mountains
north through the Magic Valley and into the central mountains.
The monsoon push is still pretty deep, but it does appears to
"thin out" a bit today as rainfall amounts are lighter overall. It
still looks like portions of the central mountains could see
localized amounts over 0.25 inches, with a potential for localized
flooding or debris flows. The risk is lower today though vs
Tuesday. Gusty winds are possible as well, with maybe a few storms
trying to produce hail. There is a risk of strong storms over the
central mountains especially as you cross over into Lemhi County
and western Montana. Isolated showers and storms are possible
overnight as the monsoon push shifts slightly east. For tomorrow,
another round of showers and thunderstorms is forecast. The focus
will be across the southern and eastern highlands and the eastern
side of the central mountains toward Monida Pass. The models are
showing a small surge in monsoon moisture, meaning an uptick in
rainfall amounts and a corresponding uptick for localized flooding
and debris flows. Tomorrow could be another day where the
strongest cores produce over 0.50 inches, along with hail and
gusty winds. Right now, the Magic Valley, Wood River Valley and
Stanley Basin may not see any storms for Thursday. We rapidly dry
out heading into the weekend. A few storms remain possible in the
southeast corner Friday. Temperatures will begin to slowly creep
up as we lose the monsoon moisture. Keyes

.LONG TERM...Saturday through Wednesday.

The potential for hot weather returns to the area as an area of high
pressure builds across the region. Weekend looks dry but highs look
to be well into the 90s and possibly near 100 once again. Monsoonal
moisture is expected to push into the area early next week bringing
somewhat cooler temps and another shot of isolated to scattered
showers and thunderstorms.

13

&&

.AVIATION...Expect isolated to scattered thunderstorms once again this
afternoon. VCTS is in the forecast at all TAF locations. Conditions
look VFR and winds appear to be mainly light. However gusty winds
are likely where thunderstorms develop.

13

&&

.FIRE WEATHER...More showers and thunderstorms are on tap through
tomorrow. The focus for this afternoon will be across 427 north
through the Magic Valley and into the central mountains. The
monsoon is a little less today, but still the potential for
wetting rains is there especially over the mountains...with
localized amounts over 0.25 possible in the central mountains. The
risk of flooding/debris flows is down a bit today, but certainly
is still there especially in areas hit harder yesterday. Coverage
will be isolated except for the central mountains and along the
Montana border west of I-15. We have issued a RED FLAG WARNING for
475 and 476 for this afternoon and evening due to higher coverage
of storms and the current fires in those areas. Storms will also
be capable of producing winds over 35 mph and MAYBE some small
hail. As you get closer to the Montana border, the risk of
strong/severe storms increases slightly...meaning higher winds
and/or larger hail may occur. For tonight, isolated showers and
storms are possible as the focus of the monsoon moisture shifts
slightly east. That trend continues tomorrow afternoon, with
showers and storms redeveloping...with the focus across Zone 476,
411, 413 the western portions of 427. For the Snake Plain and also
Zone 475, isolated storms are expected...with the current trends
indicating 422 and 425 may end up with no storms at all. There
will be a small surge of monsoon moisture, meaning a better chance
of wetting rains in the mountains...and increased risk of heavier
rainfall and associated flooding/debris flows. We will likely need
another round of RED FLAG WARNINGS tomorrow for that. There is
some concern for higher winds OUTSIDE of storms over the central
mountains and the Arco Desert, but the combination of low humidity
and wind isn't necessarily there for a RED FLAG WARNING. Much
drier air works in as we head into the weekend. A few dry storms
are possible across the southeast corner Friday. We may see a few
pockets of Red Flag conditions Friday due to lower humidity and
gusty afternoon winds, but nothing widespread at the moment.
Temperatures will begin to climb again over the next few days.
Keyes

&&

.PIH WATCHES/WARNINGS/ADVISORIES...
Red Flag Warning from noon today to 9 PM MDT this evening for
IDZ475-476.

&&

In the hours before

Local storm report, Jul 21, 10:06 AM MST, 1 hour 54 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
1106 AM MDT WED JUL 21 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1159 PM     HEAVY RAIN       1 SE REXBURG            43.81N 111.77W
07/20/2021  M0.70 INCH       MADISON            ID   TRAINED SPOTTER

            RAINFALL TOTAL FOR TUESDAY 07-20-2021. NEAR
            THE INTERSECTION OF E 7TH ST AND S 4TH ST.

&&

KSMITH
Local storm report, Jul 21, 10:10 AM MST, 1 hour 50 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
1110 AM MDT WED JUL 21 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1159 PM     HEAVY RAIN       2 SW TETONIA            43.80N 111.18W
07/20/2021  M0.60 INCH       TETON              ID   PUBLIC

            PRIVATE WEATHER STATION. TOTAL FOR TUESDAY
            07-20-2021. 0.57 INCHES OF THIS ACCUMULATION
            FELL IN 30 MINUTES BETWEEN 509 PM AND 539
            PM.

&&

KSMITH
Local storm report, Jul 21, 10:38 AM MST, 1 hour 22 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
1138 AM MDT WED JUL 21 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1159 PM     HEAVY RAIN       1 WNW FELT              43.88N 111.20W
07/20/2021  M0.56 INCH       TETON              ID   PUBLIC

            PRIVATE WEATHER STATION. TOTAL FOR TUESDAY
            07-20-2021, JUST WEST OF FELT.

&&

KSMITH
Local storm report, Jul 21, 10:45 AM MST, 1 hour 15 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
1145 AM MDT WED JUL 21 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1159 PM     HEAVY RAIN       2 SE MACKAY             43.89N 113.59W
07/20/2021  M0.26 INCH       CUSTER             ID   PUBLIC

            PRIVATE WEATHER STATION. TOTAL FOR TUESDAY
            07-20-2021 JUST OFF OF US-93 NEAR SUMMIT DR.

&&

KSMITH
Local storm report, Jul 21, 10:47 AM MST, 1 hour 13 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
1147 AM MDT WED JUL 21 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1159 PM     HEAVY RAIN       2 NE DARLINGTON         43.84N 113.38W
07/20/2021  M0.29 INCH       BUTTE              ID   PUBLIC

            W 3900 N. TOTAL FOR TUESDAY 07-20-2021.

&&

KSMITH
Local storm report, Jul 21, 10:51 AM MST, 1 hour 9 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE POCATELLO ID
1151 AM MDT WED JUL 21 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0215 PM     TSTM WND GST     9 N BLACK PINE          42.15N 112.99W
07/20/2021  M53 MPH          ONEIDA             ID   DEPT OF HIGHWAYS

            ITD RWIS STATION ITD47 - I-84 JUNIPER
            INTERCHANGE.

0414 PM     HAIL             3 W GRACE               42.58N 111.79W
07/20/2021  E0.25 INCH       CARIBOU            ID   TRAINED SPOTTER

            PEA-SIZED HAIL AND HEAVY RAIN (EST 0.60 IN
            IN 15 MIN).

0430 PM     HAIL             4 W SODA SPRINGS        42.66N 111.66W
07/20/2021  E0.50 INCH       CARIBOU            ID   PUBLIC

            PUBLIC REPORTS HAIL ESTIMATED AT SLIGHTLY
            LARGER THAN PEAS AND VERY HEAVY RAIN WITH
            MINOR FLOODING ALONG US-30 BETWEEN ALEXANDER
            AND THE WESTERN SODA SPRINGS CITY LIMIT.
            TIME ESTIMATED BASED ON REPORT AND RADAR.

0442 PM     HEAVY RAIN       1 WSW SODA SPRINGS      42.65N 111.61W
07/20/2021  E0.50 INCH       CARIBOU            ID   TRAINED SPOTTER

            HEAVY RAIN. APPROXIMATELY 0.50 IN 15 MIN.

0528 PM     HAIL             2 NNW TETONIA           43.84N 111.17W
07/20/2021  E0.50 INCH       TETON              ID   PUBLIC

            ESTIMATED HALF-INCH HAIL COVERING THE ROAD.
            BETWEEN TETONIA AND FELT. TIME ESTIMATED
            BASED ON RADAR.

0549 PM     HEAVY RAIN       3 NE TETONIA            43.85N 111.13W
07/20/2021  E0.75 INCH       TETON              ID   TRAINED SPOTTER

            HEAVY RAIN. ESTIMATING 0.75 IN IN 45 MIN.

1159 PM     HEAVY RAIN       1 SE REXBURG            43.81N 111.77W
07/20/2021  M0.70 INCH       MADISON            ID   TRAINED SPOTTER

            RAINFALL TOTAL FOR TUESDAY 07-20-2021. NEAR
            THE INTERSECTION OF E 7TH ST AND S 4TH ST.

1159 PM     HEAVY RAIN       2 SW TETONIA            43.80N 111.18W
07/20/2021  M0.60 INCH       TETON              ID   PUBLIC

            PRIVATE WEATHER STATION. TOTAL FOR TUESDAY
            07-20-2021. 0.57 INCHES OF THIS ACCUMULATION
            FELL IN 30 MINUTES BETWEEN 509 PM AND 539
            PM.

1159 PM     HEAVY RAIN       1 WNW FELT              43.88N 111.20W
07/20/2021  M0.56 INCH       TETON              ID   PUBLIC

            PRIVATE WEATHER STATION. TOTAL FOR TUESDAY
            07-20-2021, JUST WEST OF FELT.

1159 PM     HEAVY RAIN       6 SSW HENRY             42.82N 111.56W
07/20/2021  M0.46 INCH       CARIBOU            ID   PUBLIC

            PRIVATE WEATHER STATION ALONG ID-34 JUST
            NORTH OF BLACKFOOT RIVER RD. TOTAL FOR
            TUESDAY 07-20-2021. FELL BETWEEN 329 PM AND
            449 PM.

1159 PM     HEAVY RAIN       2 NE DARLINGTON         43.84N 113.38W
07/20/2021  M0.29 INCH       BUTTE              ID   PUBLIC

            W 3900 N. TOTAL FOR TUESDAY 07-20-2021.

1159 PM     HEAVY RAIN       2 SE MACKAY             43.89N 113.59W
07/20/2021  M0.26 INCH       CUSTER             ID   PUBLIC

            PRIVATE WEATHER STATION. TOTAL FOR TUESDAY
            07-20-2021 JUST OFF OF US-93 NEAR SUMMIT DR.

0622 AM     HEAVY RAIN       5 ESE CLEMENTSVILLE     43.86N 111.28W
07/21/2021  M0.25 INCH       TETON              ID   CO-OP OBSERVER

            CO-OP OBSERVER STATION TEXI1. LAST 24 HOURS.

0700 AM     HEAVY RAIN       SODA SPRINGS            42.66N 111.59W
07/21/2021  M0.42 INCH       CARIBOU            ID   COCORAHS

            COCORAHS STATION ID-CR-1. LAST 24 HOURS.
            MULTIPLE SPOTTER REPORTS OF HEAVY RAIN AND
            BRIEF, MINOR FLOODING IN THE SODA SPRINGS
            AREA TUESDAY AFTERNOON FROM THUNDERSTORMS.

0700 AM     HEAVY RAIN       3 NNW LAVA HOT SPRINGS  42.66N 112.02W
07/21/2021  M0.32 INCH       BANNOCK            ID   COCORAHS

            COCORAHS STATION ID-BK-26. LAST 24 HOURS.

0715 AM     HEAVY RAIN       4 W LAVA HOT SPRINGS    42.63N 112.09W
07/21/2021  M0.35 INCH       BANNOCK            ID   CO-OP OBSERVER

            CO-OP OBSERVER STATION TOPI1. LAST 24 HOURS.

0746 AM     HEAVY RAIN       2 NW OVID               42.30N 111.40W
07/21/2021  M0.30 INCH       BEAR LAKE          ID   MESONET

            MESONET STATION EW3600. LAST 24 HOURS.

0946 AM     HEAVY RAIN       3 NE CHESTERFIELD       42.90N 111.83W
07/21/2021  M0.46 INCH       CARIBOU            ID   MESONET

            POLE CANYON RAWS. LAST 24 HOURS.

0950 AM     HEAVY RAIN       14 WSW MACKAY           43.81N 113.85W
07/21/2021  M0.63 INCH       CUSTER             ID   MESONET

            COPPER BASIN RAWS. LAST 24 HOURS.

1003 AM     HEAVY RAIN       CHALLIS                 44.50N 114.22W
07/21/2021  M0.27 INCH       CUSTER             ID   MESONET

            CHALLIS RAWS. LAST 24 HOURS.

&&

KSMITH

The radar

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

Open the radar archive at this moment

Event by event

1 wildfire. Local standard time, as filed.

Wildfire, Marsh and Arbon Highlands

When
July 21, 12:00 PM MST to July 23, 7:00 PM MST
Where
Marsh and Arbon Highlands forecast zone
Reported by
Park/Forest Service
Coordinates
42.838, -112.256 (the zone’s center; the record gives no point)

A 1,620 acre fire began via a lightning strike on July 21st and was contained on July 23rd. It was 4 miles southeast of Pauline. It was mainly fueled by grass and brush and had about 100 personnel fighting it with aerial suppression involved.

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 2021Every state in 2021This day in weather historyWarnings in Idaho, July 2021

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: 973904.