WxDecoder

U46 Weather Big Southern Butte Airport

Blackfoot, IdahoElevation 5,073 ftSmall airport
OFF-FIELD REFERENCE
Nearest report: KPIH · 37 NM SE · 55 min old
No ceiling, visibility 10 SM.
No on-field report, so no field flight category. Conditions at the field may differ.
OFF-FIELD REFERENCE · KPIH
WIND
Calm
no steady wind
VISIBILITY
10 SM
16.1 km
CEILING
None
no BKN/OVC layer
FORECAST & PILOT NOTES · SUPPLEMENTAL

Extended forecast and pilot notes

No aviation METAR is published for this airport. The nearest National Weather Service station reports wind calm, visibility 10 SM, temperature 13C. Treat this as supplemental, not an aviation observation. Forecast suggests tonight partly cloudy then patchy fog, low near 29F, 0% chance of precipitation. Key risks: strong winds in the forecast.

PILOT WEATHER NOTES
Strong winds in the forecastWeather.gov
Tuesday: winds up to 31 kt. Re-check crosswind components closer to departure.
DayConditionsTemp FWindGustsPrecipPilot note
Tonight Partly Cloudy then Patchy Fog 29 ESE 5 kt – 0%
Monday Patchy Fog then Slight Chance Light Rain 58/28 SE 12 kt 22 kt 58%
Tuesday Partly Sunny 48/24 SW 23 kt 31 kt 0% Strong winds in the forecast
Wednesday Sunny 51/26 W 13 kt – 1%
Thursday Mostly Sunny 54/29 ENE 6 kt – 23%
Friday Chance Light Rain 52/28 NNW 6 kt – 42%
Saturday Chance Rain And Snow 51/28 W 7 kt – 44%
Sunday Chance Rain And Snow 51 N 9 kt – 42%

Source: National Weather Service (office PIH). Forecast issued 0048Z.

Radar

Radar data: NOAA/NWS MRMS composite reflectivity. For situational awareness only, not a substitute for an official weather briefing.

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RUNWAYS & WIND
Crosswind calculator
No runway layout is available for U46. Enter a runway number or heading to estimate wind components.
RUNWAYS

Runway detail & declared distances

1 runway · longest 2,600 ft

01/19
Dimensions
2,600 x 110 ft
Surface
Dirt (fair)
RWY 01
Traffic patternLeft
RWY 19
Traffic patternLeft

Runway data from the FAA NASR dataset (effective 2026-06-11). Verify with the current Chart Supplement and NOTAMs.

FIELD CONDITIONS

Field elevation

Field elevation
5,073 ft MSL

Density and pressure altitude need a current temperature and altimeter from the METAR.

DAYLIGHT & NIGHT

Sun & logging windows

Sunset
0033Z 6:33 PM
Sunrise
1359Z 7:59 AM
Loggable night
0102Z (7:02 PM local) → 1330Z (7:30 AM local)
end of evening to start of morning civil twilight
Position lights required
0033Z (6:33 PM local) → 1359Z (7:59 AM local)
sunset to sunrise (91.209)
Night passenger currency
0133Z (7:33 PM local) → 1259Z (6:59 AM local)
1 hr after sunset to 1 hr before sunrise (61.57(b))

FAA definitions, shown in Zulu with airport-local time. Verify for your operation.

AIRPORT INFORMATION

Facility & services

Big Southern Butte Airport is in Blackfoot, Idaho. Field elevation 5,073 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT
OwnershipPublicly owned
UseOpen to the public
TypeSmall airport
ManagerIDAHO DIV OF AERONAUTICS
Manager phone208-334-8775
AttendedUNATNDD
CHARTS & AIRSPACE
ICAO / IATAU46
SectionalSALT LAKE CITY
Center (ARTCC)SALT LAKE CITY
Flight service (AFSS)BOISE
RegionIdaho
CountryUnited States
Coordinates43.4325, -113.0556
Distance from city10 NM W
SERVICES & LIGHTING
Control towerNon-towered
CTAF122.900
FREQUENCIES

Communications

122.900
CTAF
CTAF

Not all tower/ground/approach frequencies are in our datasets. Verify with the FAA Chart Supplement.

AIRCRAFT ACTIVITY

Traffic patterns

Aircraft activity data is not available for this airport yet.

NEARBY AIRPORTS

Weather reference stations

U46 has no on-field report. Nearest reporting station: KPIH (37 NM SE, VFR).

KPIH Pocatello Regional Airport
37 NM SE
VFR
KIDA Idaho Falls Regional Airport
43 NM E
VFR
KSUN Friedman Memorial Airport
54 NM W
VFR
KRXE Rexburg Madison County Airport
59 NM NE
VFR
KBYI Burley Municipal Airport
62 NM SW
VFR
KGNG Gooding Municipal Airport
81 NM W
VFR
AIRPORT REMARKS

Operational remarks

›01/19 EDGES & THLDS MKD WITH WHITE ROCK BOUNDARY MKRS (BMS).
›APRT LCTD IN DESOLATE AREA - NO SVCS AVBL.
›14 FT RD 150 FT ON EXTDD CNTRLN.
›FOR CD CTC SALT LAKE ARTCC AT 801-320-2568.
›EXISTED PRIOR TO 15 MAY 1959.
›LIVESTOCK ON & INVOF ARPT.
›RWY 01/19 SFC COND POOR DUE TO LIVESTOCK DMG, GND VEHICLES, RODENTS, & VEGETATION.
›RY 01/19 +1.5 FT BERM & -1 FT DITCH ADJACENT TO ENTIRE PERIMETER OF RY.
›NO WINTER MAINTENANCE.
OFFICIAL LINKS & SOURCES
↗Search NOTAMs (official FAA NOTAM Search)
↗U46 on OurAirports
FREQUENTLY ASKED
Does U46 have a METAR?
No on-field METAR is issued for U46. This page uses the nearest reporting station as a reference.
Does U46 have a TAF?
No TAF is issued directly for U46. Use the nearest TAF-issuing field as a planning reference.
What is the field elevation at U46?
U46 sits at 5,073 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for U46?
No. wxdecoder.com is for education and situational awareness only. It is not an official weather briefing or a substitute for official sources, NOTAM review, and pilot judgment.
This app is for aviation weather education, training, and situational awareness only. It is not a substitute for an official weather briefing, approved flight-planning software, flight service, dispatch procedures, current FAA regulations, or pilot judgment. Always verify weather with official sources before flight.