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// KPSM · Portsmouth International Airport at Pease · Portsmouth

// STALE Observation is 1h 21m old — METAR cadence is typically hourly. A fresh report may be on its way.

// Station · 1h 21m ago · STALE

KPSM

Portsmouth International Airport at Pease
CAT VFR
WIND 260° / 5 kt
VIS 10+ SM
CEILING Few/scattered only
T/Td 23.8°C / 14.5°C
ALTIM 29.91 inHg
ELEV 100 FT
43.0779°N / 70.8233°W
LOCATION · Portsmouth, US
N
WIND
260°5 kt
KPSM · 100 FT
© OSM · CartoDB

// Current + 24h forecast · METAR loaded · TAF loading…

METRIC
NOW · 14Z
+6H
+12H
+18H
WIND
260°/5
 
 
 
VIS
10+ SM
 
 
 
CEILING
—
 
 
 
LAYERS
FEW035
 
 
 
T / Td
24 / 15
 
 
 
ALTIM
29.91"
 
 
 

Loading TAF forecast…

// Interpretation

VFR with light winds at 260°/5 kt. Visibility better than 10 statute miles and a few at 3,500 ft. Would shift to MVFR if the ceiling drops to 3,000 ft or visibility below 5 SM.

Loading TAF forecast narrative…

SOURCES · NOAA Aviation Weather Center METAR (TAF loading…)

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// Raw observation METAR string + decoded

METAR KPSM 251455Z 26005KT 10SM FEW035 24/15 A2991 RMK AO2A SLP131 T02380145 50002

KPSM · day 25 at 14:55 UTC · wind from 260° at 5 kt · visibility 10+ SM · a few clouds at 3,500 ft · temp 24°C / dewpoint 15°C · altimeter 29.91" Hg · sea-level pressure 1013.1 mb

// Runway analysis · computed from current METAR wind

Wind 260° @ 5 kt
1 USABLE · 1 AVOID
N
WIND
260°5 kt
HEADWIND CAUTION · HIGH XW AVOID · TAILWIND
HEADWIND ENDS 1 usable
34★ HDG 340° H1 kt X5 kt LEFT PRIMARY · 11,321'
TAILWIND ENDS · AVOID 1 ends
16 HDG 160° T1 kt X5 kt RIGHT —
Pattern altitude: 1,100 ft MSL (1,000 ft AGL). Verify pattern direction and altitude with the chart supplement before flying. // On calm winds (<3 kt), all runways are usable — favor the longest or whatever the pattern calls for.

// Density altitude · ISA +9°C

1,200FT
+1,100 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS loading…
FIELD ELEV100 FT OAT+24°C ISA DELTA+9°C PRESSURE ALT106 FT
// Performance equivalent Operating here right now feels like operating at KBML (Berlin Regional Airport, Berlin, elev 1,161 ft) on a standard ISA day.
// Aircraft performance impact MODERATE
TAKEOFF ROLL CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+12%
-8%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+8%
-5%
Light jetCJ4, Phenom 300, M2
+5%
-4%

Approximate using ~10% perf loss / 1,000 ft DA for normally aspirated, scaled by powerplant type. Verify with your aircraft's POH for accurate numbers — especially above 5,000 ft DA where these rules of thumb diverge. Severity rating assumes a standard altimeter setting (29.92" Hg / 1013 hPa); a non-standard setting shifts the effective altitude by roughly 1,000 ft per 1" Hg of deviation.

// Cloud layers · 1 reported · highest to lowest

FT 0 5k 10k 15k 20k 25k FRZ LVL · 12,120 FT FEW035 KPSM ELEV · 100 FT
// Reported layers (highest → lowest)
FEW035
Few · base 3,500 ft AGL · ~1–2 oktas
// Computed
CEILING— HIGHEST LAYER3,500 ft TOTAL COVERAGE~15% (sparse) FREEZING LEVEL12,120 ft VFR MARGINunlimited

// Sun & Moon · times in Z · bar = local day (UTC-5)

10:01ZSUNRISE
16:46ZSOLAR NOON
23:32ZSUNSET
00:02ZCIVIL END
CURRENT16:16Z DAYLIGHT REMAINING7h 16m VFR NIGHT BEGINS00:02Z (7h 45m) DAY LENGTH13h 31m
Waxing Gibbous
ILLUMINATION94% MOONRISE20:03Z MOONSET09:34Z FULL MOON IN2 days

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