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Horner Field (MT40) Area Aviation Weather & Runway Winds

As of 12:55 PM MDT, Oct 27, based on the nearest station (KGFA), MT40 is currently VFR with winds from 230° at 24 knots gusting 31, visibility 10+ statute miles, and a 13,000 ft ceiling.

Aviation weather near Horner Field in Great Falls, MT, decoded from the nearest reporting station (KGFA): conditions and runway crosswinds.

Horner Field (MT40) is a general aviation airport serving pilots in and around Great Falls, MT at a field elevation of 3,440 ft. MT40 has no weather station of its own. Conditions here are decoded from KGFA, about 6 nm away, the nearest reporting station, and local conditions can differ. It has one runway (05/23), the longest 4,809 ft. The nearest TAF is issued for KGTF.

Ask ATIS AIAsk anything about MT40's weather, runways or delays, or search another airport.
VFR
Observed 1855Z (12:55 PM MDT)live · refreshes every 60s

No weather station at this airport: showing the nearest station KGFA, 6.3 nm away.

Wind
230° 24 kt
gusting 31 kt
Visibility
10+ sm
Ceiling
13,000 ft
Altimeter
29.73"
Temp / Dew
49°F / 9°C
feels like 41°F

Wind from the southwest (230°) at 24 kt, gusting 31 kt, visibility 10+ statute miles, broken clouds at 13,000 ft, temperature 9°C (49°F), altimeter 29.73 inHg. Conditions are Visual Flight Rules (VFR), ceiling 13,000 ft.

Raw METAR
METAR KGFA 271855Z 23024G31KT 10SM BKN130 09/M01 A2973 RMK AO2A PK WND 21031/44 SLP086 T00931009 $

What changed at KGFA (nearest station)?

Since the 1655Z (10:55 AM MDT) report, compared automatically against the latest METAR.

No significant changes since the 1655Z (10:55 AM MDT) report, conditions are holding steady.

Current pilot readout for MT40

Based on the nearest station (KGFA), MT40 is currently VFR with winds from 230° at 24 knots gusting 31, visibility 10+ statute miles, and a 13,000 ft ceiling. the wind favors southwest-facing runway ends (23). Density altitude is approximately 3,800 ft (field elevation 3,440 ft). MT40 does not publish a TAF. The nearest TAF station is KGTF, about 8 nm away.

New to aviation weather? How to read a METAR → · What VFR/MVFR/IFR mean → · Decode any METAR/TAF → · Density altitude calculator →

Runway wind check

Estimated head/tailwind and crosswind for each runway end from the current reported wind.

RunwayHead / TailCrosswind
23FAV23 kt head5 kt left (g7)
0523 kt tail5 kt right (g7)

Open the crosswind calculator to try your own wind and runway numbers →

MT40 runways

1 physical runway · 2 runway ends. Each card opens the runway's intelligence page: equipment and lighting, LAHSO, frequencies, today's configuration, predicted use, history and approaches.

  • Runway 05/23
    4,809 × 87 ft · Turf/Gravel
    Status not monitored
    Current use
    no stated-runway source at MT40
    Wind
    05
    23 kt tailwind · 5 kt crosswind from right
    23
    23 kt headwind · 5 kt crosswind from left
    no active equipment NOTAM receivedView Runway Intelligence →

“Current use” is what the facilitystates; wind components are arithmetic on the current METAR against TRUE headings; status reflects NOTAMs received through SWIM, the tower's TFDM record and the D-ATIS — a runway reads “Open” only with a complete NOTAM picture.

24-hour trend

Wind, ceiling and flight category over the last 24 hours.

Wind (kt)Gusts (kt)Bottom strip, flight category:VFRMVFRIFRLIFRNo report
0193820Z07Z18Z

Over the last 22 h: wind 5→24 kt, ceiling unlimited → 13,000 ft.

MT40 weather radar

Live NEXRAD + lightning, with a 4-hour future-radar forecast. Drag to pan, tap ⚡ to toggle lightning.

Loading…
Loading radar…

Radar: NOAA/NWS via IEM · Forecast: NOAA HRRR · Lightning: NOAA · Map © Stadia Maps © OpenMapTiles © OpenStreetMap

NOAA NEXRAD composite and lightning, updated about every five minutes; amber frames are HRRR model guidance, not observed radar. Not for navigation.

Pilot reports (PIREPs) within 100 NM of MT40

Reported by pilots in flight over the past 6 hours, via aviationweather.gov.

PIREP1954Z (1:54 PM MDT) · 94 NM S of MT40 · 41,000 ft MSL · FA6X
Show raw report
BZN UA /OV BZN290025/TM 1954/FL410/TP FA6X/RM MTW+-100FT+-8-10KT/ZLC
BZN UAHeader: reporting station and UA: a routine pilot report.
OV BZN290025Location: fix or navaid, optionally with a radial and distance in NM.
TM 1954Reported at 19:54 UTC.
FL410Altitude: 41,000 ft MSL.
TP FA6XAircraft type reporting.
RM MTW+-100FT+-8-10KT/ZLCRemarks.
PIREP1802Z (12:02 PM MDT) · 73 NM SE of MT40 · 37,000 ft MSL · B738
Show raw report
LWT UA /OV LWT210040/TM 1802/FL370/TP B738/RM MTW+-5KT/ZLC
LWT UAHeader: reporting station and UA: a routine pilot report.
OV LWT210040Location: fix or navaid, optionally with a radial and distance in NM.
TM 1802Reported at 18:02 UTC.
FL370Altitude: 37,000 ft MSL.
TP B738Aircraft type reporting.
RM MTW+-5KT/ZLCRemarks.
PIREP1800Z (12:00 PM MDT) · 90 NM SE of MT40 · 45,000 ft MSL · GA5C
continuous light occasional moderate chop/zlc turbulence
Show raw report
LWT UA /OV LWT100015/TM 1800/FL450/TP GA5C/TB CONS LGT OCNL MOD CHOP/ZLC
LWT UAHeader: reporting station and UA: a routine pilot report.
OV LWT100015Location: fix or navaid, optionally with a radial and distance in NM.
TM 1800Reported at 18:00 UTC.
FL450Altitude: 45,000 ft MSL.
TP GA5CAircraft type reporting.
TB CONS LGT OCNL MOD CHOP/ZL…Turbulence: continuous light occasional moderate chop/zlc.
PIREP1751Z (11:51 AM MDT) · 81 NM SE of MT40 · 37,000 ft MSL · H25B
intermittent moderate chop/zlc turbulence
Show raw report
LWT UA /OV LWT180020/TM 1751/FL370/TP H25B/TB INTMT MOD CHOP/ZLC
LWT UAHeader: reporting station and UA: a routine pilot report.
OV LWT180020Location: fix or navaid, optionally with a radial and distance in NM.
TM 1751Reported at 17:51 UTC.
FL370Altitude: 37,000 ft MSL.
TP H25BAircraft type reporting.
TB INTMT MOD CHOP/ZLCTurbulence: intermittent moderate chop/zlc.
PIREP1613Z (10:13 AM MDT) · 89 NM SE of MT40 · 41,000 ft MSL · CL35
moderate 410 turbulence
Show raw report
BZN UA /OV BZN030040/TM 1613/FL410/TP CL35/TB MOD 410/RM BORDERLINE SEV /ZLC
BZN UAHeader: reporting station and UA: a routine pilot report.
OV BZN030040Location: fix or navaid, optionally with a radial and distance in NM.
TM 1613Reported at 16:13 UTC.
FL410Altitude: 41,000 ft MSL.
TP CL35Aircraft type reporting.
TB MOD 410Turbulence: moderate 410.
RM BORDERLINE SEV /ZLCRemarks.
PIREP1438Z (8:38 AM MDT) · 96 NM W of MT40 · 14,000 ft MSL · ATR3
light mixed blo 140 icing
Show raw report
MSO UA /OV MSO030030/TM 1438/FL140/TP ATR3/SK BASES 080/TA M18/IC LGT MIXED BLO 140
MSO UAHeader: reporting station and UA: a routine pilot report.
OV MSO030030Location: fix or navaid, optionally with a radial and distance in NM.
TM 1438Reported at 14:38 UTC.
FL140Altitude: 14,000 ft MSL.
TP ATR3Aircraft type reporting.
SK BASES 080Sky condition: cloud bases and tops in hundreds of feet MSL.
TA M18Outside air temperature, °C.
IC LGT MIXED BLO 140Icing: light mixed blo 140.
PIREP1404Z (8:04 AM MDT) · 99 NM S of MT40 · 11,500 ft MSL · C340
Show raw report
BZN UA /OV BZN360010/TM 1404/FL115/TP C340/SK BASE115-TOP128/ZLC
BZN UAHeader: reporting station and UA: a routine pilot report.
OV BZN360010Location: fix or navaid, optionally with a radial and distance in NM.
TM 1404Reported at 14:04 UTC.
FL115Altitude: 11,500 ft MSL.
TP C340Aircraft type reporting.
SK BASE115-TOP128/ZLCSky condition: cloud bases and tops in hundreds of feet MSL.

⚠️ PIREPs are unverified pilot reports. Not for operational use: conditions change between reports.

Recent aviation weather trends at MT40

From ATIS Alerts' hourly weather history.

Over the past 24 hours, the nearest station KGFA reported mostly VFR across 31 observations, with 9 flight-category changes. The strongest gust reached 33 kt, the lowest ceiling was 700 ft. Wind most often came from the SW.

Last 24 hours
VFR 74%MVFR 10%IFR 16%
Wind avg/max: 5/24 kt
Max gust: 33 kt
Lowest ceiling: 700 ft
Lowest vis: -
Prevailing wind: SW
Category changes: 9

Most recent change: MVFR → VFR

Last 7 days
VFR 90%MVFR 5%IFR 5%LIFR 1%
Wind avg/max: 5/24 kt
Max gust: 33 kt
Lowest ceiling: 400 ft
Lowest vis: 1.5 sm
Prevailing wind: SW
Category changes: 14

Most recent change: MVFR → VFR

Wind-favored runway - past 30 days

Share of hours each runway had the most headwind. From wind reports, not ATC assignments.

23
81%
05
19%

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No live weather from MT40

Live crosswind meter

MT40 has no weather feed online, so the wind comes from KGFA, 6.3 nm away.

N230524 kt
Headwind
23 kt
Crosswind (from the left)
5 kt
Headwind in gusts
30 kt
Crosswind in gusts
7 kt

Wind is 12° off runway 23, the end with the most headwind right now.

Have a weather station at MT40? Help us make your field's weather available to every pilot, free. Add your field's wx station →

Turf · 4,809 ft. Headings from FAA runway data. Not for navigation.

Field aerial

North up

Aerial photo of Horner Field (MT40) with runway 05/23 marked
N ↑

Runway 05/23 drawn from FAA threshold coordinates.

Imagery: USGS The National Map (public domain). Something off? ✏️ Suggest an edit

Airport info

From the FAA airport record (cycle 2026-10-01) and OurAirports.

Services

Repairs
Airframe minor
Control tower
None

Airport

Type
General aviation airport
FAA LID
MT49
City
Great Falls
State
Montana
Country
United States
Elevation
3,440 ft
Coordinates
47.5937, -111.2700
Runways
1 physical runway · 2 runway ends
Longest runway
4,809 ft
Weather reporting
Nearest station KGFA
TAF
Nearest KGTF
Time zone
America/Denver
Sunset in
4h 16m

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Nearby airports

Compare nearby METAR/TAF stations within 25, 50 and 100 NM before departure or arrival.

VFRMVFRIFRLIFRNo report

RC flying fields nearby

AMA model-aircraft club fields around this airport: live wind, crosswind & flyability on each page.

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Pilot PIREPs for Horner Field (MT40)

Community-submitted

Community-submitted airport notes from pilots about runway conditions, wildlife, FBOs, fuel, turbulence, ramp access, and local tips.

Read recent community-submitted pilot notes for Horner Field, including runway conditions, wildlife activity, FBO/fuel notes, turbulence, ramp access, and local airport tips.

⚠️ Pilot PIREPs on ATIS Alerts are community-submitted airport notes for situational awareness only. They are not official FAA PIREPs, NOTAMs, weather briefings, airport advisories, or flight-planning guidance. Always verify with official FAA/NWS sources, airport management, ATC, and current publications.

No Pilot PIREPs have been submitted for MT40 yet. Recently flew here? Help the next pilot by leaving a quick airport note.

Pilot PIREPs are community pilot notes for situational awareness only, not official FAA PIREPs or advisories. Verify with official sources. Notes are moderated before they appear; helpful marks and reports help us keep them useful.

⚠️ Not for operational use. Always verify with official FAA-approved preflight weather sources before flight.

Spotted incorrect airport info? ✏️ Suggest an edit

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