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U46 Big Southern Butte Airport
Atomic City, Idaho, USA

GOING TO ATOMIC CITY?

FAA INFORMATION EFFECTIVE 27 NOVEMBER 2025

Location

FAA Identifier: U46
Lat/Long: 43-25-57.3000N 113-03-19.6000W
43-25.955000N 113-03.326667W
43.4325833,-113.0554444
(estimated)
Elevation: 5073 ft. / 1546 m (estimated)
Variation: 16E (1985)
From city: 10 miles W of ATOMIC CITY, ID
Time zone: UTC -7 (UTC -6 during Daylight Saving Time)
Zip code: 83213

Airport Operations

Airport use: Open to the public
Activation date: 06/1951
Control tower: no
ARTCC: SALT LAKE CITY CENTER
FSS: BOISE FLIGHT SERVICE STATION
NOTAMs facility: BOI (NOTAM-D service available)
Attendance: UNATNDD
Wind indicator: yes
Segmented circle: yes

Airport Communications

CTAF: 122.9

Nearby radio navigation aids

VOR radial/distance  VOR name  Freq  Var
PIHr315/38.1POCATELLO VOR/DME112.6017E

Airport Services

Parking: tiedowns
Airframe service: NONE
Powerplant service: NONE
Bottled oxygen: NONE
Bulk oxygen: NONE

Runway Information

Runway 1/19

Dimensions: 2600 x 110 ft. / 792 x 34 m
Surface: dirt, in fair condition
Runway edge markings: 01/19 EDGES & THLDS MKD WITH WHITE ROCK BOUNDARY MKRS (BMS).
RUNWAY 1  RUNWAY 19
Latitude: 43-25.769333N43-26.141833N
Longitude: 113-03.470667W113-03.181167W
Traffic pattern: leftleft
Obstructions: none14 ft. road, 100 ft. left of centerline
14 FT RD 150 FT ON EXTDD CNTRLN.

Airport Ownership and Management from official FAA records

Ownership: Publicly-owned
Owner: IDAHO STAE-ITD/DIV OF AERONAUTICS
P O BOX 7129
BOISE, ID 83707-1129
Phone 208-334-8775
Manager: IDAHO DIV OF AERONAUTICS
P O BOX 7129
BOISE, ID 83707-1129
Phone 208-334-8775

Additional Remarks

- NO WINTER MAINTENANCE.
- 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.
- FOR CD CTC SALT LAKE ARTCC AT 801-320-2568.
- APRT LCTD IN DESOLATE AREA - NO SVCS AVBL.

Instrument Procedures

There are no published instrument procedures at U46.

Some nearby airports with instrument procedures:

KAOC - Arco-Butte County Airport (16 nm NW)
U02 - McCarley Field Airport (34 nm SE)
KPIH - Pocatello Regional Airport (37 nm SE)
KIDA - Idaho Falls Regional Airport (43 nm E)
KSUN - Friedman Memorial Airport (54 nm W)
  
Loc | Ops | Rwys | IFR | FBO | Links
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Area around U46 (Big Southern Butte Airport)
 
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Aerial photo
WARNING: Photo may not be current or correct
Aerial photo of U46 (Big Southern Butte Airport)
Photo by Winston Ellis
Photo taken 30-Jun-2019
looking south.
Do you have a better or more recent aerial photo of Big Southern Butte Airport that you would like to share? If so, please send us your photo.

 
Sectional chart

 
Airport distance calculator
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From to U46

Sunrise and sunset
Times for 21-Dec-2025
 Local
(UTC-7)		 Zulu
(UTC)
Morning civil twilight07:3014:30
Sunrise08:0315:03
Sunset16:5823:58
Evening civil twilight17:3100:31

Current date and time
Zulu (UTC)  21-Dec-2025 07:07:51
Local (UTC-7)  21-Dec-2025 00:07:51
 
METAR
KPIH 
38nm SE 		210653Z AUTO 06003KT 10SM SCT065 OVC090 01/M02 A3003 RMK AO2 SLP179 T00061017 400611006
KIDA 
43nm E 		210653Z AUTO 09004KT 10SM SCT047 SCT055 00/M02 A3005 RMK AO2 SLP193 T00001022 400441011
TAF
KPIH 
38nm SE 		210527Z 2106/2206 VRB04KT P6SM VCSH SCT030 BKN070 BKN200 PROB30 2110/2113 4SM -SHRA BR BKN025 OVC060 FM211300 18015G25KT 2SM -SHRA BR SCT015 OVC025 TEMPO 2114/2116 OVC015 FM211700 20020G30KT P6SM -SHRA SCT025 OVC035 TEMPO 2118/2122 4SM SHRA BR OVC025 FM212300 21015KT 6SM -SHRA BR SCT025 OVC040
KIDA 
43nm E 		210527Z 2106/2206 02006KT P6SM SCT025 BKN060 BKN160 FM211200 02006KT P6SM VCSH SCT015 OVC025 PROB30 2112/2115 6SM -SHRA BR OVC015 FM211500 20015G25KT 2SM -SHRA BR SCT005 OVC008 FM211800 23015G25KT 2SM -SHRA BR SCT008 OVC015 FM220300 23010G20KT 4SM -SHRA OVC015
NOTAMs
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