KGPI Runway 02/20 — Glacier Park International Airport
9,007 × 150 ft asphalt · true headings 035° / 215° · field elevation 2,977 ft
Runway 02/20 at Glacier Park International Airport (KGPI) in Kalispell, MT is 9,007 ft long and 150 ft wide, asphalt, with true headings 035° and 215°. The FAA record lists ILS (CAT I) and MALSR approach lights on runway 02. Over 2005–2025 the wind gave runway 02 the headwind 34% of the time and runway 20 66%, with a crosswind above 15 kt in 0.2% of wind hours. KGPI has no digital ATIS, so the active runway is not known; the wind-favored end and the ATIS Alerts prediction are estimates.
Runway 02/20 — current operational status
What the D-ATIS, the tower and current NOTAMs state now. The published FAA baseline (NASR) is a separate line in the overview below and does not reflect temporary closures.
- NOTAM 10/023: !GPI 10/023 GPI RWY 02 FICON 5/5/5 100 PCT WET OBS AT 2610281016. 2610281016-2610291016
Sources: Published FAA baseline (OurAirports/NASR record) · FAA NOTAMs. Runway NOTAMs stream live from the FAA NOTAM Management Service (SWIM); the official text is shown verbatim below the card. Always confirm with a current briefing.
NOTAMs for runway 02/20
Official text as issued; grouped for reading only. “Scheduled” means not yet in effect. NOTAMs are received live from the FAA NOTAM Management Service through SWIM and recorded since Sep 19, 2026; a NOTAM issued before that and not re-issued since may be missing. Get a full briefing before flight.
- 10/023 · DOM10/28 1016Z (4:16 AM MDT) → 10/29 1016Z (4:16 AM MDT)
!GPI 10/023 GPI RWY 02 FICON 5/5/5 100 PCT WET OBS AT 2610281016. 2610281016-2610291016
- A2400/26 · INTL09/03 1727Z (11:27 AM MDT) → PERM
IAP GLACIER PARK INTL, KALISPELL, MT. RNAV (RNP) Y RWY 2, ORIG-A... ADD PBN REQUIREMENTS NOTE: RNP AR APCH â GPS, RF, MIN RNP 0.50. AUTHORIZATION REQUIRED. DELETE NOTE: RF AND GPS REQUIRED. DELETE NOTE: MISSED APPROACH REQUIRES RNP LESS THAN 1.0. CHANGE NOTE TO READ: FOR UNCOMPENSATED BARO-VNAV SYSTEMS, PROCEDURE NA BELOW -21C OR ABOVE 43C. CHANGE NOTE TO READ: FOR INOPERATIVE ALS, INCREASE RNP 0.10* VISIBILITY TO 1 1/4 SM AND RNP 0.30 VISIBILITY TO 2 SM. CHANGE MISSED APPROACH INSTRUCTIONS TO READ: CLIMBING LEFT TURN TO 10000 TO JOGAD, AND LEFT TURN TO ROYOG, AND LEFT TURN TO TONUY, AND ON TRACK 121 TO WILTO, AND ON TRACK 129 TO ANGIL AND HOLD. CHART PLANVIEW NOTE: PROCEDURE NA FOR ARRIVALS AT OLIBY ON V448 SOUTHWEST BOUND. CHART PLANVIEW NOTE: PROCEDURE NA FOR ARRIVALS AT FIKAB ON V536 SOUTHWEST BOUND. CHART S27 AND 58S IN PLANVIEW. THIS IS RNAV (RNP) Y RWY 2, ORIG-B.
Current runway assignment is not available from D-ATIS at KGPI. The wind components below show which end the wind favors; the section after it is an ATIS Alerts prediction. Neither is an ATC assignment.
Current wind on Runway 02/20
Wind from the south-southwest (210°) at 4 kt
- Tailwind
- 4 kt
- Crosswind
- 0 kt
- Headwind
- 4 kt
- Crosswind
- 0 kt
- arrivals
- departures
- LAHSO hold-short
- closed
Layout from FAA NASR runway-end coordinates; the selected runway is highlighted and no active source exists here. Not for navigation. Official FAA diagram ↗
Components use TRUE runway headings and TRUE METAR wind. “Favored by wind” is arithmetic, not an ATC assignment.
Runway 02/20 outlook
Where runway 02/20 stands now and which runway at KGPI is likely over the next 12 hours — an estimate, not an ATC assignment.
Time · runway 02/20 · airport-wide outlook · confidence · forecast wind · why
- Now1038Z · 4:38 AM MDT·02/20: no runway favored·no runway favored airport-wide·no confidence·wind 210° at 4 kt·Why METAR wind 210° at 4 kt: below 5 kt, wind does not decide the runway.|No recorded calm-wind preference yet, so no end is favored.
- +1 h1138Z · 5:38 AM MDT·02/20: not favored·airport-wide likely 12 then 20·Southeast flow·6 kt headwind, 3 kt crosswind·Medium 63%·wind 160° at 7 kt·Why TAF forecast wind 160° at 7 kt favors south-facing runway ends: 6 kt headwind and 3 kt crosswind on 12 versus 4 kt headwind on 20.|No known runway closure prevents this configuration.|Confidence falls with forecast distance (+1 h).
- +2 h1238Z · 6:38 AM MDT·02/20: not favored·airport-wide likely 12 then 20·Southeast flow·6 kt headwind, 3 kt crosswind·Medium 60%·wind 160° at 7 kt·Why TAF forecast wind 160° at 7 kt favors south-facing runway ends: 6 kt headwind and 3 kt crosswind on 12 versus 4 kt headwind on 20.|No known runway closure prevents this configuration.|Confidence falls with forecast distance (+2 h).
- +3 h1338Z · 7:38 AM MDT·02/20: no runway favored·no runway favored airport-wide·no confidence·wind 190° at 3 kt·Why TAF wind 190° at 3 kt: below 5 kt, wind does not decide the runway.|No recorded calm-wind preference yet, so no end is favored.
- +6 h1638Z · 10:38 AM MDT·02/20: no runway favored·no runway favored airport-wide·no confidence·wind 190° at 3 kt·Why TAF wind 190° at 3 kt: below 5 kt, wind does not decide the runway.|No recorded calm-wind preference yet, so no end is favored.
- +12 h2238Z · 4:38 PM MDT·02/20: 20 likely·airport-wide likely 20 then 12·Southwest flow·7 kt headwind, 3 kt crosswind·Low 37%·wind 190° at 8 kt·Why TAF forecast wind 190° at 8 kt favors south-facing runway ends: 7 kt headwind and 3 kt crosswind on 20 versus 5 kt headwind on 12.|No known runway closure prevents this configuration.|Confidence falls with forecast distance (+12 h).
ATIS Alerts Predicted Runway is an estimate from the TAF wind forecast, runway geometry (most headwind, crosswind penalised, tailwind over 5 kt avoided, longest runway breaks ties), the current stated configuration and any stated closures. Each row lists its reasons; “no runway favored” is a genuine answer under variable or light wind, never replaced by a guess. It is not an ATC assignment and does not know about noise abatement or traffic flow unless the recorded history shows them. TAF issued 0520Z (11:20 PM MDT).
Runway 02/20 equipment and lighting
What the FAA record lists for each end, annotated with current NOTAM and D-ATIS outages.
- Approach lighting
- MALSROUT OF SERVICE
- Visual glide slope
- PAPI (4-box, left side)
- Runway edge lighting
- HIRL (high intensity)
- Centerline lighting
- Not available
- Touchdown zone lighting
- Not available
- REIL
- Not available
- ILS
- ILS
- Localizer
- Available
- Glideslope
- Available
- DME
- Not available
- Marker beacons
- Not available
- RVR
- Not available
- Runway markings
- Precision instrument
- Arresting system
- Not available
IAP GLACIER PARK INTL, KALISPELL, MT. RNAV (RNP) Y RWY 2, ORIG-A... ADD PBN REQUIREMENTS NOTE: RNP AR APCH â GPS, RF, MIN RNP 0.50. AUTHORIZATION REQUIRED. DELETE NOTE: RF AND GPS REQUIRED. DELETE NOTE: MISSED APPROACH REQUIRES RNP LESS THAN 1.0. CHANGE NOTE TO READ: FOR UNCOMPENSATED BARO-VNAV SYSTEMS, PROCEDURE NA BELOW -21C OR ABOVE 43C. CHANGE NOTE TO READ: FOR INOPERATIVE ALS, INCREASE RNP 0.10* VISIBILITY TO 1 1/4 SM AND RNP 0.30 VISIBILITY TO 2 SM. CHANGE MISSED APPROACH INSTRUCTIONS TO READ: CLIMBING LEFT TURN TO 10000 TO JOGAD, AND LEFT TURN TO ROYOG, AND LEFT TURN TO TONUY, AND ON TRACK 121 TO WILTO, AND ON TRACK 129 TO ANGIL AND HOLD. CHART PLANVIEW NOTE: PROCEDURE NA FOR ARRIVALS AT OLIBY ON V448 SOUTHWEST BOUND. CHART PLANVIEW NOTE: PROCEDURE NA FOR ARRIVALS AT FIKAB ON V536 SOUTHWEST BOUND. CHART S27 AND 58S IN PLANVIEW. THIS IS RNAV (RNP) Y RWY 2, ORIG-B.
- Approach lighting
- Not available
- Visual glide slope
- PAPI (4-box, left side)
- Runway edge lighting
- HIRL (high intensity)
- Centerline lighting
- Not available
- Touchdown zone lighting
- Not available
- REIL
- Available
- ILS
- Not available
- Localizer
- Not available
- Glideslope
- Not available
- DME
- Not available
- Marker beacons
- Not available
- RVR
- Not available
- Runway markings
- Precision instrument
- Arresting system
- Not available
Source: FAA NASR 28-day subscription, cycle effective 2026-10-01 (equipment on record) · FAA NOTAMs via SWIM (live)and the current D-ATIS (outages). “Not available” means the FAA record lists no such equipment for the end; nothing here is inferred. An outage annotation is only ever a reading of the official text shown with it. Declared distances are not shown in this phase.
Land and hold short operations
LAHSO hold-short points and available landing distances on the FAA record, and whether the current D-ATIS reports LAHSO in effect.
No LAHSO hold-short point on the FAA record for this end.
No LAHSO hold-short point on the FAA record for this end.
This airport has no D-ATIS, so the current LAHSO state is not known here. Source: FAA NASR cycle 2026-10-01; D-ATIS text read by ATIS Alerts.
Frequencies for runway 02/20
Tower, ground, clearance, ATIS and approach frequencies from the FAA record, labelled by what they apply to.
| Service | Frequency | Applies to |
|---|---|---|
| Tower | 124.55 | Airport-wide |
| Ground | 121.6 | Airport-wide |
| ATIS | 132.625 | Airport-wide |
Show all frequencies (2 more: approach and departure sectors, secondary and other)
| Service | Frequency | Applies to |
|---|---|---|
| CTAF | 124.55 | Airport-wideACTVT MALSR RWY 02; REIL RWY 20; HIRL RWY 02/20; MIRL RWY 12/30 - CTAF. PAPI RWY 02, 20 & 30 OPR CONSLY. |
| UNICOM | 122.95 | Airport-wide |
The FAA record does not sectorize KGPI's frequencies by runway; every row applies airport-wide. Source: FAA NASR FRQ, cycle 2026-10-01. Verify on the current chart supplement before use.
Runway 02/20 overview
Physical characteristics from the FAA-derived runway record.
- Length
- 9,007 ft
- Width
- 150 ft
- Surface
- Asphalt · Good condition
- Surface treatment
- Grooved
- Weight bearing (lb)
- S 115k · D 198k · 2D 321k
- PCN
- 513
- Runway lights
- Lighted
- Airport elevation
- 2,977 ft
- Published FAA baseline
- Open
- Published NASR record; does not reflect temporary closures or restrictions. Current operational status is the card at the top of the page.
- True heading
- 035°
- Magnetic
- 020°
- Published FAA baseline
- Open
- Threshold elevation
- 2,962 ft
- TDZ elevation
- 2,966 ft
- Displaced threshold
- None on record
- Threshold crossing height
- 51 ft
- Visual glide path
- 3°
- Traffic pattern
- Left
- True heading
- 215°
- Magnetic
- 200°
- Published FAA baseline
- Open
- Threshold elevation
- 2,977 ft
- TDZ elevation
- 2,977 ft
- Displaced threshold
- None on record
- Threshold crossing height
- 48 ft
- Visual glide path
- 3°
- Traffic pattern
- Left
Runway 02/20 numbers are magnetic; the stored geometry and every wind calculation on this page are TRUE north, so they never need a variation correction. Magnetic headings use the FAA's published variation for this airport, 15.0°E (2010), the same value printed on the FAA airport diagram. Surface condition, treatment, weight bearing, thresholds and traffic pattern are from the FAA NASR record (cycle 2026-10-01); lighting, ILS and LAHSO are in their own sections above. Declared distances are not shown in this phase.
Wind-favored runway at KGPI — last 30 days
Which runway end had the most headwind each hour, from ATIS Alerts' collected wind history — an estimate, not ATC use.
Share of hours each runway had the most headwind. From wind reports, not ATC assignments.
- 02
- 50%
- 20
- 24%
- 12
- 16%
- 30
- 10%
Historical wind and crosswind on runway 02/20
20-year hourly climatology from the ASOS archive, computed per runway end.
From 174,330 hourly observations at KGPI (2005–2025), 104,793 with a steady wind direction (39.9% calm, variable or direction-less). One observation per clock hour; TRUE headings against TRUE wind.
Crosswind on runway 02/20 (either end)
| Crosswind (kt) | Share of wind hours |
|---|---|
| 0–5 | 74.1% |
| 5–10 | 22.7% |
| 10–15 | 3% |
| 15–20 | 0.2% |
| 20–25 | 0% |
| 25+ | 0% |
Strongest-crosswind month on average: Apr; calmest: Dec. Percentiles are streaming approximations (t-digest), accurate to about 0.1 kt.
Runway 02
Runway 20
“Most wind-favored end” is meteorological analysis: the share of steady-wind hours (2005–2025) in which this end had the most headwind of every open runway end at KGPI. It does not mean ATC selected the runway that often (parallel ends with the same heading share the credit equally). Observed runway use, where available, is the configuration-history section above.
By wind direction
| Wind from | Share of wind hours | 02 favored | 20 favored | Mean crosswind | Crosswind > 15 kt |
|---|---|---|---|---|---|
| N 338–023° | 17% | 74.9% | 0% | 3.5 kt | 0% |
| NE 023–068° | 10% | 100% | 0% | 1.2 kt | 0% |
| E 068–113° | 3% | 43.2% | 0% | 4 kt | 0.1% |
| SE 113–158° | 11% | 0% | 0% | 7.1 kt | 1% |
| S 158–203° | 28% | 0% | 45.9% | 4.5 kt | 0.1% |
| SW 203–248° | 14% | 0% | 100% | 1.5 kt | 0% |
| W 248–293° | 12% | 0% | 38.5% | 4.6 kt | 0.5% |
| NW 293–338° | 5% | 0% | 0% | 3.7 kt | 0.1% |
By time of day (airport-local)
Seasonal runway conditions
| Month | Mean crosswind (kt) |
|---|---|
| Jan | 3.4 kt |
| Feb | 3.8 kt |
| Mar | 3.9 kt |
| Apr | 4.3 kt |
| May | 4.1 kt |
| Jun | 4.2 kt |
| Jul | 4.0 kt |
| Aug | 3.9 kt |
| Sep | 3.6 kt |
| Oct | 3.5 kt |
| Nov | 3.5 kt |
| Dec | 3.3 kt |
| Month | Prevailing | Mean wind | Gusty | Mean xw | xw > 10 | xw > 15 | xw > 20 | 02 tail > 5 | 20 tail > 5 | IFR | TS | Fog |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan | S | 3.4 kt | 2.9% | 3.4 kt | 3.1% | 0.2% | 0% | 22.5% | 14.2% | 20.2% | 0% | 22.4% |
| Feb | S | 4.9 kt | 6% | 3.8 kt | 2.9% | 0.1% | 0% | 23.4% | 22.6% | 12.6% | 0% | 13.1% |
| Mar | S | 5.2 kt | 6.5% | 3.9 kt | 3.3% | 0.2% | 0% | 29.1% | 14.7% | 5.8% | 0% | 5.7% |
| Apr | S | 6 kt | 10.6% | 4.3 kt | 5.3% | 0.4% | 0% | 29.5% | 17% | 3.2% | 0.01% | 3.5% |
| May | S | 5.6 kt | 9% | 4.1 kt | 3.9% | 0.3% | 0% | 24.1% | 21.4% | 1.6% | 0.23% | 2.2% |
| Jun | S | 5 kt | 6.9% | 4.2 kt | 3.9% | 0.2% | 0% | 26.4% | 10.4% | 2% | 0.59% | 3.1% |
| Jul | S | 4.5 kt | 6.9% | 4 kt | 3.1% | 0.3% | 0% | 21.5% | 13.8% | 0.9% | 0.89% | 1.4% |
| Aug | S | 4.4 kt | 6.9% | 3.9 kt | 2.9% | 0.2% | 0% | 20.4% | 17.4% | 2.6% | 0.71% | 2.2% |
| Sep | S | 4.1 kt | 5.9% | 3.6 kt | 2% | 0.1% | 0% | 20.6% | 15.8% | 3% | 0.15% | 3.1% |
| Oct | S | 3.8 kt | 4.9% | 3.5 kt | 1.8% | 0.1% | 0% | 23.7% | 14.3% | 6.1% | 0.01% | 8.9% |
| Nov | S | 4 kt | 5.6% | 3.5 kt | 2.6% | 0.3% | 0% | 27.3% | 13.4% | 12.3% | 0% | 15.3% |
| Dec | S | 3.5 kt | 4% | 3.3 kt | 2.3% | 0.3% | 0% | 24.2% | 15.5% | 18.7% | 0% | 19% |
IFR, thunderstorm (TS) and fog columns are airport-wide shares of hours; the crosswind and tailwind columns are specific to this runway. Prevailing = most common 45° wind sector among wind hours.
Runway 02/20 closure history
Kept per source with its provenance: D-ATIS-observed, NOTAM-observed and the FAA published baseline are never merged.
KGPI has no D-ATIS, so there is no broadcast-observed closure record.
- 09/153 · partial closure (partial) · runway 02/20effective 2026-09-21 06:00Z → 2026-09-21 11:15Z · first seen 2026-09-20 11:18Z · last seen 2026-09-20 17:55Z · cancelled 2026-09-20 17:55Z
!GPI 09/153 GPI RWY 02/20 CLSD EXC SKED ACFT AND AIR CARRIERS 2609210600-2609211115
- 09/152 · closure (full) · runway 02/20effective 2026-09-21 06:00Z → 2026-09-21 11:15Z · first seen 2026-09-20 11:17Z · last seen 2026-09-20 11:23Z · cancelled 2026-09-20 11:23Z
!GPI 09/152 GPI RWY 02/20 CLSD 2609210600-2609211115
- 09/154 · partial closure (partial) · runway 02/20effective 2026-09-21 06:00Z → 2026-09-21 11:15Z · first seen 2026-09-20 17:56Z · last seen 2026-09-21 10:33Z · cancelled 2026-09-21 10:33Z
!GPI 09/154 GPI RWY 02/20 CLSD EXC AIR CARRIERS 2609210600-2609211115
- 09/154 · partial closure (partial) · runway 02/20effective 2026-09-21 06:00Z → 2026-09-21 11:15Z · first seen 2026-09-21 10:34Z · last seen 2026-09-21 10:34Z
RWY 02/20 CLSD EXC AIR CARRIERS
- 09/155 · closure (full) · runway 02/20effective 2026-09-21 05:35Z → 2026-09-21 11:15Z · first seen 2026-09-21 05:37Z · last seen 2026-09-21 10:33Z · cancelled 2026-09-21 10:33Z
!GPI 09/155 GPI RWY 02/20 CLSD 2609210535-2609211115
- 09/148 · closure (full) · runway 02/20effective 2026-09-20 05:58Z → 2026-09-20 11:15Z · first seen 2026-09-20 05:59Z · last seen 2026-09-20 05:59Z
!GPI 09/148 GPI RWY 02/20 CLSD 2609200558-2609201115
- 09/139 · closure (full) · runway 02/20effective 2026-09-19 06:14Z → 2026-09-19 11:15Z · first seen 2026-09-19 06:16Z · last seen 2026-09-19 06:18Z
!GPI 09/139 GPI RWY 02/20 CLSD 2609190614-2609191115
Runway 02/20: Open on the published record — a baseline that does not reflect temporary closures or restrictions, not the current operational status.
Recent pilot reports involving runway 02/20
Official PIREPs that name this runway explicitly, past 6 hours.
No pilot report in the last 6 hours names runway 02/20 at KGPI explicitly. Reports near the airport that do not name a runway are on the airport page.
Instrument approaches to runway 02/20
From the FAA d-TPP, linked to the official plates.
Runway 02
- ILSILS OR LOC RWY 02 ↗precision
- RNAV (GPS)RNAV (GPS) Z RWY 02 ↗
- RNAV (RNP)RNAV (RNP) Y RWY 02 ↗
Runway 20
- RNAV (RNP)RNAV (RNP) RWY 20 ↗
3 departure procedures · FAA d-TPP cycle 2611. Plates open on aeronav.faa.gov (public domain); ATIS Alerts does not reproduce charts or minimums.
Methodology and sources
Short version below; the full write-up is at Runway Intelligence methodology, and every launched airport is listed on the Runway Intelligence hub.
- Active runwayscome first from the tower's TFDM (Terminal Flight Data Manager) airport configuration, received as structured data through the FAA SWIM Cloud Distribution Service at towers that have it; otherwise from the airport's D-ATIS text (community relay of the FAA broadcast) with an open, tested parser, and the broadcast text is always shown. Every change is recorded, so “recorded use” is what the facility stated, never an inference. ATIS Alerts is not an FAA product and this is not FAA data; SWIM content is for non-operational use.
- Flowis the compass direction of the stated arrival ends (eight sectors, named only when every arrival end points within 30° of the others and clear of a sector edge); a tower's own configuration name is used when it carries a direction word. Stored separately from the runway sets.
- Equipment, LAHSO and frequencies come from the FAA NASR 28-day subscription (cycle 2026-10-01): approach lights, visual glide slope, edge / centerline / touchdown-zone lights, REIL, ILS components with FAA status, RVR, markings, LAHSO hold-short points and available landing distances, and facility frequencies with their published sectorization. Outage annotations are readings of the NOTAM or D-ATIS text shown beside them. Blank FAA fields read “Not available”.
- Wind components use the current METAR (aviationweather.gov) against TRUE runway headings from the OurAirports/FAA runway record.
- Runway visual range, tower demand and traffic-management restrictions come from FAA SWIM: STDDS Airport Data (RVR and light settings, about 130 airports) and TFDM (15-minute runway demand, APREQ/MIT restrictions). Each block is stamped with its own time; none of it is an FAA product or a clearance.
- Predicted runway scores each open end from the TAF wind (headwind, crosswind penalty, tailwind avoidance, longest-runway tie-break), excludes stated closures, and — once a wind sector has 24 h of recorded use — adjusts confidence by what the facility did under similar wind; every row lists its reasons. It does not model noise abatement or flow programs beyond what the record shows.
- History thresholds: usage shares need 12 / 48 / 168 recorded hours for the 24-hour / 7-day / 30-day windows; a wind sector needs 24 h and 5 days; time-of-day needs 7 days and 20 h per daypart; flow shares need 48 h. Below a bar the module says so instead of showing a percentage.
- Climatology: Iowa Environmental Mesonet ASOS archive, one observation per hour, 45° wind sectors, percentiles via t-digest; runway geometry is today's record applied to all years. Methodology v1.
- PIREPs: official reports from aviationweather.gov are attached only when the text names this runway and the report is tied to KGPI by identifier or by position within 15 NM. Approaches: FAA d-TPP metafile, current charting cycle; plates link to aeronav.faa.gov. No minimums are reproduced.
- Data freshness: METAR and D-ATIS refresh every minute on this page; the D-ATIS recorder ran 4 min ago; usage rollups every 3 h; climatology through 2025-12-31.
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Other runways at KGPI
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KGPI airport diagram
Official FAA taxiway and runway layout. Tap to zoom.
Official FAA airport diagram · d-TPP cycle 2611 · Not for navigation. Download the official FAA PDF ↗
⚠️ ATIS Alerts provides informational runway analysis based on available weather, the tower's TFDM configuration and NOTAMs received through FAA SWIM, D-ATIS text, FAA data and historical observations. Active runways shown here are what the tower or its D-ATIS stated and may lag or be misread; NOTAM coverage is not complete; predicted runways are an ATIS Alerts estimate, not an ATC assignment; equipment states are readings of the official text shown with them. Not an FAA product. Not for operational use. Always verify with official FAA-approved preflight weather sources before flight.