Nelson's Run Airport (39PN) Area Aviation Weather & Runway Winds
Aviation weather near Nelson's Run Airport in Mercer, PA, decoded from the nearest reporting station (KUCP): conditions, runway crosswinds, and free Telegram airport alerts.
Nelson's Run Airport (39PN) is a general aviation airport serving pilots in and around Mercer, PA at 1,305 ft. 39PN has no weather station of its own. Conditions here are decoded from KUCP, about 15 nm away, the nearest reporting station, and local conditions can differ. Its 2 runways (09, 27), longest 2,500 ft, are checked against the current wind in the crosswind table below. The nearest TAF is issued for KFKL. Track it in the ATIS Alerts Telegram bot to get alerts read from KUCP, the station this page is based on.
No weather station at this airport: showing the nearest station KUCP, 15 nm away.
Wind calm, visibility 7 statute miles, overcast at 1,000 ft, temperature 21°C (70°F), altimeter 29.96 inHg. Conditions are Marginal VFR (MVFR), ceiling 1,000 ft.
SPECI KUCP 131039Z AUTO 00000KT 7SM OVC010 21/21 A2996 RMK AO2 LTG DSNT SE
What changed at KUCP (nearest station)?
Since the 0956Z (5:56 AM EDT) report, compared automatically against the latest METAR.
- Flight category improved from IFR to MVFR.
- Ceiling lifted from 600 ft to 1,000 ft.
The latest report is an off-schedule special (SPECI), issued because conditions changed significantly. What is a SPECI? →
This is exactly what ATIS Alerts watches for you: get a Telegram message when 39PN's weather changes, free →
Current pilot readout for 39PN
Based on the nearest station (KUCP), 39PN is currently MVFR with calm winds, visibility 7 statute miles, and a 1,000 ft ceiling. Density altitude is approximately 2,300 ft (field elevation 1,305 ft). 39PN does not publish a TAF. The nearest TAF station is KFKL, about 18 nm away.
⚠️ Not for operational use. Always verify with official FAA-approved preflight weather sources before flight.
New to aviation weather? How to read a METAR → · What VFR/MVFR/IFR mean → · Decode any METAR/TAF → · Density altitude calculator →
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Track 39PN free on TelegramRunway wind check
Estimated head/tailwind and crosswind for each runway end from the current reported wind.
Use this section to quickly compare current wind alignment across available runways at 39PN. This is intended as a planning aid only and should not replace official performance calculations or pilot judgment.
Current wind is calm: calm wind is not a factor for runway selection, and with no wind there is no head/tail or crosswind component to compute. Live numbers return automatically once a report includes a wind direction.
| Runway | Length | Surface | Head / Tail | Crosswind |
|---|---|---|---|---|
| 09 | 2,500 ft | TURF | - | - |
| 27 | 2,500 ft | TURF | - | - |
Open the crosswind calculator to try your own wind and runway numbers →
24-hour trend
Wind, ceiling and flight category over the last 24 hours.
Over the last 24 h: wind 0→0 kt, ceiling unlimited → 1,000 ft.
39PN weather radar
Live NEXRAD + lightning, with a 4-hour future-radar forecast. Drag to pan, tap ⚡ to toggle lightning.
Live weather radar around Nelson's Run Airport in Mercer, PA: the NOAA/NWS NEXRAD composite updates about every five minutes, with NOAA lightning strike density overlaid. The loop plays the past 50 minutes, then continues into a future-radar forecast (+1 to +4 hours, NOAA HRRR model) so you can see where precipitation around 39PN is headed.
Radar: NOAA/NWS via IEM · Forecast: NOAA HRRR · Lightning: NOAA · Map © Stadia Maps © OpenMapTiles © OpenStreetMap
Forecast frames (amber label) are HRRR model guidance, not observed radar. Lightning strike density appears as a blue-white glow when strikes are detected in view. Radar and lightning coverage are limited in parts of Alaska, Hawaii, and offshore areas. Not for navigation.
Pilot reports (PIREPs) within 100 NM of 39PN
Reported by pilots in flight over the past 6 hours, via aviationweather.gov.
Show raw report
BFD UA /OV SLT340010/TM 1029/FL260/TP CRJ7/TB LGT CHOP 260-270 DURC/RM ZOB
BFD UAHeader: reporting station and UA: a routine pilot report.OV SLT340010Location: fix or navaid, optionally with a radial and distance in NM.TM 1029Reported at 10:29 UTC.FL260Altitude: 26,000 ft MSL.TP CRJ7Aircraft type reporting.TB LGT CHOP 260-270 DURCTurbulence: light chop 26,000–27,000 ft durc.RM ZOBRemarks.Show raw report
AGC UA /OV AGC FINAL/TM 1010/FL018/TP PC12/SK OVC003/WX 1 1/2SM
AGC UAHeader: reporting station and UA: a routine pilot report.OV AGC FINALLocation: fix or navaid, optionally with a radial and distance in NM.TM 1010Reported at 10:10 UTC.FL018Altitude: 1,800 ft MSL.TP PC12Aircraft type reporting.SK OVC003Sky condition: cloud bases and tops in hundreds of feet MSL.WX 1 1/2SMWeather and flight visibility observed.⚠️ PIREPs are unverified pilot reports. Not for operational use: conditions change between reports.
Recent aviation weather trends at 39PN
From ATIS Alerts' hourly weather history.
Over the past 24 hours, the nearest station KUCP reported a mix of conditions, most often VFR across 44 observations, with 19 flight-category changes. The strongest gust reached 21 kt, the lowest ceiling was 200 ft. Wind most often came from the W.
Most recent change: IFR → MVFR
Most recent change: MVFR → IFR
- 09/27
- 100%
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Airport facts
Reference data from the OurAirports dataset.
- Type
- General aviation airport
- FAA LID
- 39PN
- City
- Mercer
- State
- Pennsylvania
- Country
- United States
- Elevation
- 1,305 ft
- Coordinates
- 41.2159, -80.1976
- Runways
- 2
- Longest runway
- 2,500 ft
- Weather reporting
- Nearest station KUCP
- TAF
- Nearest KFKL
- Time zone
- America/New_York
- Next sunset
- 12h 41m
Run a flight school, FBO, or club here? Embed 39PN's live status on your website, free →
Nearby airports
Compare nearby METAR/TAF stations within 25, 50 and 100 NM before departure or arrival.
Within 25 NM
11 airports+5 more within 25 NM
25–50 NM
5 airports50–100 NM
8 airports+2 more within 100 NM
RC flying fields nearby
AMA model-aircraft club fields around this airport: live wind, crosswind & flyability on each page.
- Nelson Run RC Flyers - Mercer Grove City Rd , Mercer, PA · 0 mi
- Penn-Ohio Radio Kontrol Society - Heasley Rd , Pulaski, PA · 13 mi
- Merco MACS - Baker Rd , Greenville, PA · 14 mi
39PN weather: frequently asked
What runways are available at 39PN?+
39PN has 2 runways: 09, 27; the longest is 2,500 ft. This page computes the live crosswind for each runway end from the current wind.
Where does the weather shown for 39PN come from?+
Nelson's Run Airport does not have its own weather station. Conditions shown here come from the nearest reporting station, KUCP, about 15 nm away, close enough for situational awareness, but local conditions at 39PN can differ.
Does 39PN have a TAF?+
No. 39PN does not publish its own TAF. The nearest TAF station is KFKL, about 18 nm away.
Does 39PN broadcast D-ATIS?+
No. 39PN does not broadcast D-ATIS. Alerts for 39PN from the ATIS Alerts bot (@atisalerts_bot) are based on its METAR (via the nearest reporting station) instead.
Pilot PIREPs for Nelson's Run Airport (39PN)
Community-submittedCommunity-submitted airport notes from pilots about runway conditions, wildlife, FBOs, fuel, turbulence, ramp access, and local tips.
Read recent community-submitted pilot notes for Nelson's Run Airport, 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 39PN 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.
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⚠️ Not for operational use. Always verify with official FAA-approved preflight weather sources before flight.
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