Idaho, 2018Wildfire in Idaho, August 16 to 20, 2018
August 16 to 20, 2018 · NWS PIH · 1 event in 1 county or zone
A 2,500 acre wild fire began on August 16th on the Fort Hall Indian Reservation east of interstate 15. 50 homes had to be evacuated as the fire spread rapidly.
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- 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.
A 2,500 acre wild fire began on August 16th on the Fort Hall Indian Reservation east of interstate 15. 50 homes had to be evacuated as the fire spread rapidly.
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 16, 12:47 PM MST, 2 hours 13 minutes earlier.
Area forecast discussion, Aug 16, 12:47 PM MST, 2 hours 13 minutes before
Area Forecast Discussion
National Weather Service Pocatello ID
147 PM MDT Thu Aug 16 2018
.SHORT TERM...Tonight through Sunday.
Main short term impact will be effects of thunderstorms through
Saturday morning. The biggest threat will be Friday as upper level
system and cold front work through eastern Idaho with the most
widespread coverage expected Friday afternoon and evening. There
is a possibility some storms may reach severe levels Friday with
wind gusts the main threat. Tonight most coverage will be in
southern highlands although isolated storms are possible anywhere.
Thunderstorms should end Saturday with most coverage in the
eastern highlands. Sunday will be dry with an upper level ridge
pushing over the region. Temperatures should be near seasonal
normals and even slightly below high temperatures Saturday and
Sunday.
GK
.LONG TERM...Monday through Thursday.
European model is mainly dry but the GFS has some showers Monday
so included mountain thunderstorms but trended toward dry
conditions Tuesday through Thursday. GFS did continue with threat
Tuesday but for now not prone to make significant changes to grids
and kept the dry forecast going. Temperatures will be above normal
in the long term again.
GK
&&
.AVIATION...VFR conditions are expected to persist through the
period, despite an increase in mid-level clouds through this
evening. The increase in monsoonal moisture across southern Idaho
will lead to development of showers and thunderstorms, but coverage
should primarily be isolated. These could impact KBYI this evening,
but will likely avoid all other ports. Outside of any isolated
thunderstorm, surface flow will largely remain light and
variable.
Quiet conditions are expected overnight with some clearing expected.
A better chance of scattered showers and thunderstorms will come
when the better forcing arrives Friday afternoon/evening just beyond
the current TAF period. Would expect potential of brief restrictions
in this activity Friday evening.
TAX
&&
.FIRE WEATHER...
Moisture continues to increase across the area as surface dewpoints
push into the 30s and 40s. This increase in humidity will fuel
primarily isolated showers and thunderstorms this afternoon/evening.
Activity will continue to increase from the southwest and could
become scattered in nature across Fire Weather Zone 427. Thus, will
continue the Red Flag Warning this evening there. Elsewhere,
coverage should remain limited enough to exclude from RFWs.
From a forecast standpoint, little has changed heading into Friday.
The moist and unstable airmass will continue to overspread the area
into Friday, ahead of a broader low pressure system. After a quiet
weather morning, coverage of showers and thunderstorms will increase
in the afternoon/evening hours to at least scattered in nature.
While thunderstorms could impact most locations, the focus of higher
potential remains from the central Idaho mountains east towards the
Montana/Idaho border. Will convert the Fire Weather Watches over to
Red Flag Warnings for all zones areawide, save for zone 411 which
has not reached critical fuels.
Precipitation chances will carry into Saturday, but should largely
be relegated to the morning hours. Breezy conditions are expected
behind the passing frontal system, but the cooler temperatures will
preclude any need for Red Flag extensions.
Sunday sees the return of the upper level ridge and end to
thunderstorms. Low pressure moving through Montana though will bring
back a shower and thunderstorm threat as early as Monday.
TAX
.PIH WATCHES/WARNINGS/ADVISORIES...
Red Flag Warning from noon to 11 PM MDT Friday for IDZ410-413-
422-425-475-476.
Red Flag Warning until 11 PM MDT Friday for IDZ427.
&&
Wildfire, Lower Snake River Plain
- When
- August 16, 3:00 PM MST to August 20, 8:00 PM MST
- Where
- Lower Snake River Plain forecast zone
- Reported by
- Tribal Official
- Coordinates
- 42.860, -112.488 (the zone’s center; the record gives no point)
A 2,500 acre wild fire began on August 16th on the Fort Hall Indian Reservation east of interstate 15. 50 homes had to be evacuated as the fire spread rapidly.
- 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.
- Heat in Nevada, August 16 to 20, 20184 deaths · 1 event
- Hail and Damaging Wind in Nebraska, August 16, 2018$8.7 million · 1.75 in hail · 2 events
- Tornado and Flash Flooding in Mississippi, August 16 to 19, 2018$619,000 · EF1 · 23 events
- Flash Flooding and Flooding in Wisconsin, August 16 to 17, 2018$1.0 million · 1 in hail · 9 events
- Flash Flooding and Hail in Arkansas, August 16 to 20, 2018$115,000 · 1.75 in hail · 18 events
- Flash Flooding and Hail in Oklahoma, August 16 to 17, 2018$52,000 · 1 in hail · 20 events
- Damaging Wind in Arizona, August 16, 20182 injured · $50,000 · 72 kt wind · 1 event
- Tornado and Flash Flood in Illinois, August 16 to 17, 2018$61,000 · EF0 · 10 events
- Flash Flooding in Arizona, August 16, 2018$50,000 · 2 events
- Flash Flooding in California, August 16, 2018$30,000 · 2 events
- Tornado and Hail in Kansas, August 16, 2018EF0 · 16 events
- Tornado and Flash Flooding in California, August 16 to 17, 2018$5,000 · EF0 · 13 events
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: 779861.