Joslin Field Magic Valley Regional Airport

KTWF / TWF

Twin Falls, US

Last Updated
Jul 27, 21:53Z

Current Weather

Display Units
Recent 41 min ago
21:53Z

🌙 Night
MVFR
Flight Rules
31°C
Temperature
Dewpoint: 8°C
6 kt
330°
4 SM
Visibility
2,700 ft
Ceiling
Above Ground Level
1018 hPa
QNH
Altimeter Setting

Raw METAR

METAR KTWF 272153Z 33006KT 4SM HZ BKN027 OVC034 31/08 A3005 RMK AO2 SLP107 T03110078

Clouds - Visual Profile

12,000ft
9,000ft
6,000ft
3,000ft
Ground
Field Elev: 4,154 ft
BKN 2,700 ft AGL
OVC 3,400 ft AGL
☁️
BKN
Broken (5/8-7/8 sky coverage)
2,700 ft
AGL (Above Ground)
6,854 ft AMSL
☁️
OVC
Overcast (8/8 sky coverage)
3,400 ft
AGL (Above Ground)
7,554 ft AMSL

Weather Briefing

MVFR

Joslin Field Magic Valley Regional Airport is currently reporting marginal VFR (MVFR) conditions with overcast skies at 3,400 feet and 4 SM visibility.

Wind Analysis

Winds are from the north-northwest (330°) at 6 knots. Runway 30 is favored with a 5-knot headwind and 3-knot crosswind component.

Visibility & Ceiling

Visibility is 4 SM, below VFR minimums in some airspace classifications. Check local requirements before departing VFR. The ceiling is 2700 feet AGL (broken), placing conditions in the MVFR category.

Temperature & Moisture

Temperature is 31°C (88°F) with a dewpoint of 8°C, indicating very dry conditions. High temperatures at this elevation may result in significant density altitude effects. Pilots should calculate density altitude and adjust performance expectations accordingly.

Forecast Outlook

The TAF forecast covers the next 24 hours. Conditions are expected to remain MVFR throughout the forecast period. Expected weather includes: Smoke.

Pilot Recommendations

VFR pilots should exercise caution. Consider filing IFR if instrument rated, or postponing the flight if conditions are expected to deteriorate further.

This briefing is generated from real-time METAR and TAF data. Always verify with official sources before flight.

QNH
1018 hPa
Sea Level Pressure
For altitude above MSL
QFE
880 hPa
Field Pressure
Height above aerodrome (4,154 ft)
Pressure Alt
4,012 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: 6,929 ft (High - Reduced Performance)
ISA Deviation: +24.3°C

Forecast (TAF)

View Full TAF
Raw TAF
TAF KTWF 271720Z 2718/2818 27009KT 3SM FU OVC025 FM271900 34007KT 3SM FU OVC030 FM280300 21008KT 5SM FU BKN035 FM281500 32006KT 4SM FU OVC030
Upcoming Changes (Next 12 Hours)
22:34Z BASE
+0h
MVFR 270° 9 kt
Visibility: 3SM
Ceiling: 2,500 ft
Smoke
03:00Z FM280300
+5h
MVFR 210° 8 kt
Visibility: 5SM
Ceiling: 3,500 ft
Smoke

24-Hour Weather Evolution

Loading weather data...
Data Sources
  • • Current conditions from METAR observations
  • • Historical data from past 24 hours
  • • No forecast or predicted data included
  • • Data updated with each new METAR report
Chart Features
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Note: Future values beyond current TAF validity are estimates based on climatological data and trends. Always verify with current forecasts before flight operations.

Airport Runway Layout

N
TWF
12
30 ✈️
8
26 ✈️

Runway Information

Runway Length Width Surface Heading Wind Component
✈️ 12/30
Active: 30
3,224 ft 75 ft ASP 136°
5.2 kt 3.0 kt
30° angle
✈️ 8/26
Active: 26
8,703 ft 150 ft ASP 91°
2.1 kt 5.6 kt
70° angle
🟢 Active Runway: Best headwind component for current conditions
⬆️ Headwind: Favorable wind component
↔️ Crosswind: ≤10kt Safe, 11-15kt Caution, >15kt Challenging

Weather Statistics - KTWF

8,045 observations | Sep 2025 - Jul 2026

Flight Rules Distribution

VFR
87.7%
MVFR
6.3%
IFR
2.9%
LIFR
3%

Joslin Field Magic Valley Regional Airport enjoys predominantly VFR conditions, with visual flight rules prevailing 87.7% of the time. Prevailing winds are from the SW averaging 9.8 knots, with gusts recorded up to 42 knots. Temperature extremes range from -9°C to 37°C, reflecting significant seasonal variation. The best months for VFR flying are June, July, May.

Wind Analysis

Prevailing Direction: SW (225°)
Average Speed: 9.8 kt
Maximum Recorded: 42 kt
Calm Winds: 5.5%
Direction Distribution:
E
8.3%
N
4%
S
19.7%
W
21.4%
NE
4.9%
NW
9%
SE
5.6%
SW
21.6%

Temperature Range

Average: 9.9°C
Range: -9°C to 37°C
-9°C 37°C

Visibility

Average: 9.6 SM
Below 3 SM: 1.1%
Fog Frequency: 2%

Best Months for VFR

June July May

Runway Wind Analysis

Runway 12/30
Favorable wind: 100%
Avg crosswind: 6.6 kt

Statistics computed from 8,045 METAR observations (Sep 2025 - Jul 2026). Data sourced from official aviation weather services. Updated daily.

Joslin Field Magic Valley Regional Airport - Airport Information

Airport Details

ICAO Code: KTWF
IATA Code: TWF
Type: medium airport
Status: active
Elevation: 4,154 ft MSL

Location

City: Twin Falls
Country: US
Latitude: 42.481800°
Longitude: -114.487999°
Time Zone: Etc/GMT+8

Runway Information

Runway 12/30
Length: 3,224 ft
Width: 75 ft
Surface: ASP
ILS: No
Runway 8/26
Length: 8,703 ft
Width: 150 ft
Surface: ASP
ILS: No

About Joslin Field Magic Valley Regional Airport

Overview

Joslin Field Magic Valley Regional Airport serves Twin Falls, Idaho, situated at 4,154 feet mean sea level. As a medium-sized regional airport, it provides critical aviation infrastructure for south-central Idaho, supporting both commercial and general aviation operations with two paved runways.

Flying Conditions

The airport experiences predominantly visual flight rules (VFR) conditions, with 81.5% of observations in VFR status. Temperature variations are significant, ranging from -9°C to 29°C, which pilots should anticipate when planning flights. Prevailing winds from the south (180°) average 8.8 knots, with occasional gusts up to 42 knots.

Notable Features

Located at 42.481800, -114.487999, the airport features two asphalt runways: a shorter 3,224-foot runway (12/30) and a substantial 8,703-foot runway (8/26). The elevated terrain at 4,154 feet MSL requires careful performance calculations, particularly during temperature extremes. Wind conditions favor Runway 12/30, with 100% favorable wind alignment and an average crosswind of 6.2 knots.

Approach Considerations

September, December, and October represent the most consistent VFR months for operations. Visibility averages 9.3 statute miles, with only 2% of observations below 3 statute miles. Pilots should be prepared for occasional reduced visibility conditions, with fog present in 4.1% of observations and potential marginal VFR or IFR transitions.

Data Sources & Accuracy: Airport information sourced from OurAirports.com, a collaborative database of worldwide airport data. Weather data from official aviation weather services including NOAA Aviation Weather Center and international METAR/TAF providers. Information is updated regularly but pilots should always verify current conditions and NOTAMs through official channels before flight operations.

Official Data Sources

Weather NOAA Aviation Weather Center • International METAR/TAF Network
Airports OurAirports.com • Public domain airport database
NOTAMs FAA NOTAM System • ICAO NOTAM Distribution
Last updated: Jan 1, 1970 12:00 AM UTC

Disclaimer: Data is provided for informational purposes only. Pilots must verify all information through official sources before flight operations. Weather conditions change rapidly; always obtain a current briefing from approved weather services.