Joslin Field Magic Valley Regional Airport

KTWF / TWF

Twin Falls, US

Last Updated
Apr 23, 16:11Z

Current Weather

Display Units
Fresh 4 min ago
16:11Z

☀️ Day
MVFR
Flight Rules
7°C
Temperature
Dewpoint: 2°C
22 kt
270° G30 kt
10 SM
Visibility
2,400 ft
Ceiling
Above Ground Level
1017 hPa
QNH
Altimeter Setting

Raw METAR

SPECI KTWF 231611Z 27022G30KT 10SM BKN024 BKN035 07/02 A3003 RMK AO2 PK WND 27031/1558 T00670017

Clouds - Visual Profile

12,000ft
9,000ft
6,000ft
3,000ft
Ground
Field Elev: 4,154 ft
BKN 2,400 ft AGL
BKN 3,500 ft AGL
☁️
BKN
Broken (5/8-7/8 sky coverage)
2,400 ft
AGL (Above Ground)
6,554 ft AMSL
☁️
BKN
Broken (5/8-7/8 sky coverage)
3,500 ft
AGL (Above Ground)
7,654 ft AMSL

Weather Briefing

MVFR

Joslin Field Magic Valley Regional Airport is currently reporting marginal VFR (MVFR) conditions with broken clouds at 2,400 feet and 10 SM visibility.

Wind Analysis

Winds are from the west (270°) at 22 knots with gusts to 30 knots. Runway 30 is favored with a 19-knot headwind and 11-knot crosswind component (gusting to 15 knots crosswind). Student pilots and low-time aviators should exercise caution.

Visibility & Ceiling

Visibility is 10 SM. The ceiling is 2400 feet AGL (broken), placing conditions in the MVFR category.

Temperature & Moisture

Temperature is 7°C (45°F) with a dewpoint of 2°C, indicating moderate moisture conditions.

Forecast Outlook

The TAF forecast covers the next 24 hours. Conditions are expected to fluctuate between VFR and MVFR. VFR pilots should be prepared for deteriorating conditions. Winds are forecast to reach up to 22 knots during the period.

Pilot Recommendations

VFR pilots should exercise caution. Consider filing IFR if instrument rated, or postponing the flight if conditions are expected to deteriorate further. Gusty conditions may exceed demonstrated crosswind components for many general aviation aircraft. Check your aircraft's limitations.

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

QNH
1017 hPa
Sea Level Pressure
For altitude above MSL
QFE
879 hPa
Field Pressure
Height above aerodrome (4,154 ft)
Pressure Alt
4,042 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: 4,079 ft
ISA Deviation: +0.3°C

Forecast (TAF)

View Full TAF
Raw TAF
TAF KTWF 231135Z 2312/2412 26017KT P6SM BKN025 FM231500 29022G32KT P6SM SCT050 FM240200 29014KT P6SM FEW070 FM240400 25012KT P6SM SCT050
Upcoming Changes (Next 12 Hours)
16:15Z BASE
+0h
MVFR 260° 17 kt
Visibility: >6SM
Ceiling: 2,500 ft
02:00Z FM240200
+10h
VFR 290° 14 kt
Visibility: >6SM
04:00Z FM240400
+12h
VFR 250° 12 kt
Visibility: >6SM

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
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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°
19.1 kt 11.0 kt
30° angle
✈️ 8/26
Active: 26
8,703 ft 150 ft ASP 91°
21.7 kt 3.8 kt
10° angle
🟢 Active Runway: Best headwind component for current conditions
⬆️ Headwind: Favorable wind component
↔️ Crosswind: ≤10kt Safe, 11-15kt Caution, >15kt Challenging

Weather Statistics - KTWF

5,812 observations | Sep 2025 - Apr 2026

Flight Rules Distribution

VFR
84%
MVFR
8.3%
IFR
3.8%
LIFR
4%

Joslin Field Magic Valley Regional Airport enjoys predominantly VFR conditions, with visual flight rules prevailing 84% of the time. Prevailing winds are from the W averaging 9.5 knots, with gusts recorded up to 42 knots. Temperature extremes range from -9°C to 29°C, reflecting significant seasonal variation. The best months for VFR flying are September, March, April.

Wind Analysis

Prevailing Direction: W (270°)
Average Speed: 9.5 kt
Maximum Recorded: 42 kt
Calm Winds: 7%
Direction Distribution:
N
3%
NE
4.9%
E
9.1%
SE
6.6%
S
21%
SW
20.8%
W
21.5%
NW
6.1%

Temperature Range

Average: 6.6°C
Range: -9°C to 29°C
-9°C 29°C

Visibility

Average: 9.5 SM
Below 3 SM: 1.5%
Fog Frequency: 2.8%

Best Months for VFR

September March April

Runway Wind Analysis

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

Statistics computed from 5,812 METAR observations (Sep 2025 - Apr 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.