wxdecoder
2SD4

Nicolaisen Airport

Mount Vernon, South DakotaElevation 1,440 ftSmall airport
OFF-FIELD REFERENCE
Nearest report: KMHE · 11 NM NE · 20 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 · KMHE
WIND
120@6
steady
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 from 120° at 6 kt, visibility 10 SM, temperature 29C. Treat this as supplemental, not an aviation observation. Forecast suggests tonight mostly clear, low near 72F, 3% chance of precipitation. Key risks: thunderstorms in the forecast.

PILOT WEATHER NOTES
Thunderstorms in the forecastWeather.gov
Thursday: Chance Showers And Thunderstorms then Showers And Thunderstorms Likely. Watch for developing convection and plan alternates.
DayConditionsTemp FWindGustsPrecipPilot note
Tonight Mostly Clear 72 SW 4 kt – 3%
Monday Patchy Smoke 95/69 NNE 13 kt – 10%
Tuesday Mostly Sunny 91/68 SSE 9 kt – 10%
Wednesday Mostly Sunny 93/70 SSE 13 kt 22 kt 52%
Thursday Chance Showers And Thunderstorms then Showers And Thunderstorms Likely 86/66 SSE 13 kt – 61% Thunderstorms in the forecast
Friday Slight Chance Showers And Thunderstorms then Mostly Sunny 84/64 NNE 9 kt – 19%
Saturday Mostly Sunny 85/65 SE 9 kt – 9%
Sunday Sunny 89 SSE 22 kt – 4%

Source: National Weather Service (office FSD). Forecast issued 0313Z.

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 2SD4. Enter a runway number or heading to estimate wind components.
RUNWAYS

Runway detail & declared distances

1 runway · longest 2,800 ft

N/S
Dimensions
2,800 x 50 ft
Surface
Turf
RWY N
RWY S

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
1,440 ft MSL

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

DAYLIGHT & NIGHT

Sun & logging windows

Sunset
0203Z 9:03 PM
Sunrise
1116Z 6:16 AM
Loggable night
0236Z (9:36 PM local) → 1043Z (5:43 AM local)
end of evening to start of morning civil twilight
Position lights required
0203Z (9:03 PM local) → 1116Z (6:16 AM local)
sunset to sunrise (91.209)
Night passenger currency
0303Z (10:03 PM local) → 1016Z (5:16 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

Nicolaisen Airport is in Mount Vernon, South Dakota. Field elevation 1,440 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT
OwnershipPrivately owned
UsePrivate use
TypeSmall airport
ManagerRICHARD D NICOLAISEN
Manager phone605-236-5581
AttendedUNATNDD
CHARTS & AIRSPACE
ICAO / IATA2SD4
SectionalOMAHA
Center (ARTCC)MINNEAPOLIS
Flight service (AFSS)HURON
RegionSouth Dakota
CountryUnited States
Coordinates43.6825, -98.2661
Distance from city2 NM S
SERVICES & LIGHTING
Control towerNon-towered
AIRCRAFT ACTIVITY

Traffic patterns

Aircraft activity data is not available for this airport yet.

NEARBY AIRPORTS

Weather reference stations

2SD4 has no on-field report. Nearest reporting station: KMHE (11 NM NE, VFR).

KMHE Mitchell Municipal Airport
11 NM NE
VFR
KHON Huron Regional Airport
42 NM N
VFR
KMDS Madison Municipal Airport
55 NM E
VFR
KYKN Chan Gurney Municipal Airport
60 NM SE
VFR
KFSD Sioux Falls Regional Airport
67 NM E
VFR
KBKX Brookings Regional Airport
73 NM NE
VFR
AIRPORT REMARKS

Operational remarks

›FOR CD CTC MINNEAPOLIS ARTCC AT 651-463-5588.
OFFICIAL LINKS & SOURCES
↗Search NOTAMs (official FAA NOTAM Search)
↗2SD4 on OurAirports
FREQUENTLY ASKED
Does 2SD4 have a METAR?
No on-field METAR is issued for 2SD4. This page uses the nearest reporting station as a reference.
Does 2SD4 have a TAF?
No TAF is issued directly for 2SD4. Use the nearest TAF-issuing field as a planning reference.
What is the field elevation at 2SD4?
2SD4 sits at 1,440 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for 2SD4?
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.