Idaho, 2019

Flood in Idaho, January 14 to 17, 2019

January 14 to 17, 2019 · NWS PIH · 1 event in 1 county or zone

Flooding returned south of Moore due to ice jamming of the Big Lost River on the 14th. Only farm land was flooded.

Where it happened

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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.

Flooding returned south of Moore due to ice jamming of the Big Lost River on the 14th. Only farm land was flooded.

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 Jan 14, 3:40 AM MST, 1 hour 20 minutes earlier.

Area forecast discussion, Jan 14, 3:40 AM MST, 1 hour 20 minutes before
Area Forecast Discussion
National Weather Service Pocatello ID
340 AM MST Mon Jan 14 2019

.SHORT TERM...Today through Wednesday night. Pockets of fog are
still occurring this morning under high pressure, mainly for the
Magic Valley, Southern Highlands and portions of the Snake River
Plain and Central mountains. The high pressure breaks down today
ahead of a system moving through Tuesday.

Tuesday look for a system moving into the area from the south.
Expect 1 to 3 inches of snow mainly for upslope areas like the
Wood river valley. Downslope areas like the I-86 corridor from
Pocatello to Burley will see, in general, less than an half of a
inch. Temperatures still look to be cold enough for snow though
some downslope areas may be rain/snow mix.

Wednesday snow amounts will be light with one to two inches
possible particularly along the Southeast highlands extending up
along the Eastern Highlands into Island Park.

Heavier snow starts to arrive early Thursday morning with the
next big system that will moving into the area.

Temperatures will be near normal to slightly below normal today
and tomorrow before rising above normal Wednesday. TW

.LONG TERM...Thursday through Monday.

Continue to look at a very wet system arriving Thursday. Looks like
it will be a warm system. We could see some light snow in the valley
floors Thursday morning, potentially affecting commutes. However,
the bulk of the snow will arrive late morning and afternoon when
snow levels are expected to rise above 5000 feet. Early indications
of snow amounts are for 5 to 10 inches above 5000 feet with up to 3
inches in the Snake Plain and Magic Valley and 2 to 5 inches for
eastern highland communities. Temperatures will play a dramatic
factor in snow amounts for this system so the forecast amounts are
very much "preliminary".

This system exist the area by Friday with some residual snow showers
possible Friday and maybe Saturday. Both models continue to show
another system arriving from the northwest Sunday into Monday.
However, it looks like much of the energy with the system may dive
well south of the region, so it may not be much of a snow maker for
us.

Valle

&&

.AVIATION...Some areas of patchy fog are possible this morning. LIFR
conditions will be possible for a few hours this morning where the
fog develops until it lifts.

Valle

&&

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

The radar

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

Open the radar archive at this moment

Event by event

1 flood. Local standard time, as filed.

Flood, Butte

When
January 14, 5:00 AM MST to January 17, 4:00 AM MST
Where
Butte County, Moore to 5 mi SW of Moore
Cause
Ice Jam
Reported by
Emergency Manager
Coordinates
43.730, -113.370

Flooding returned south of Moore due to ice jamming of the Big Lost River on the 14th. Only farm land was flooded.

What these are

Flood
Flooding that develops more slowly than a flash flood: rivers leaving their banks, or water standing over land for an extended time.

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

The same day elsewhere

More

Every storm in Idaho in 2019Every state in 2019This day in weather historyWarnings in Idaho, January 2019

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: 802225.