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Greeneville Municipal Airport, Tennessee

Small airport in Greene County, Tennessee

Air quality

The air at Greeneville Municipal Airport

Index 26, good, led by ozone. Read at 12 AM from its reporting area, Tri-Cities (TN), 33 miles off.

26Good
  • Fine particles (PM2.5)11Good-
  • Ozone26Good-
  • Coarse particles (PM10)5Good-

The days ahead

Good each day through Sun Oct 18, led by ozone. Yesterday measured 56, moderate.

Smoke, the next 45 hours

No smoke near the ground through Sun 8 PM.

SatSun

Precipitation

What has fallen at Greeneville Municipal Airport

0.18 in in the last 24 hours, and none in the 2 days before, to Fri 11 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.18in
Last 3 days
0.18in

Visibility

How far you can see at Greeneville Municipal Airport, the next 45 hours

Visibility stays 9 miles or more through Sun 8 PM, lowest 10 miles Sat 8 AM.

SatSun

Airfield

Code
GCY
ICAO
KGCY
IATA
GCY
Field elevation
1,608 ft
Serves
Greeneville
Kind
Small airport
Scheduled service
No
Its own instrument
GCY
Wind now
From 290° at 9 mph, read 17 Oct, 00:35

Runways

RunwayLengthWidthSurfaceHeading, trueWind along it nowCrosswind now
05 / 236,300 ft100 ftAsphalt47° / 227°4 mph head, on 238 mph from the right
05232,000 ftN290° 9 mph
Runways from their surveyed ends, north up, lengths and positions to scale; the rose in the corner is the wind now.

Measured here

What the airfield's own instrument measured, the last 24 hours

Every hour from Greenville (GCY), Greeneville Municipal Airport's own instrument, measure by measure, on the field's own clock.

Temperature

52 F at 12 AM; 81 F at its warmest, 2 PM Friday, and 52 F at its coolest, 12 AM.

Now
52F
12 AM
Highest
81F
2 PM Friday
Lowest
52F
12 AM
Temperature and Dew point at Greenville, temperature from 51.8 to 80.6, the latest 51.8; dew point from 46.4 to 66.2, the latest 48.2, in degrees Fahrenheit.TEMPERATURE AND DEW POINTF4050607080903 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 17TEMPERATUREDEW POINT

How it is measured: Stevenson screen and siting, Field Book FB-INS-009

Humidity and dew point

A dew point of 48 F, the air 87% saturated; the humidity ran from 47% at 3 PM Friday to 94% at 4 AM Friday.

Dew point now
48F
12 AM
Humidity now
87%
Humidity, range
47 to 94%
Relative humidity at Greenville, relative humidity from 47 to 94, the latest 87, in per cent.RELATIVE HUMIDITY%4060801003 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 17

How it is measured: Humidity variables, Field Book FB-WAT-002

Wind

7 mph from the west northwest at 12 AM; at its strongest 12 mph, 2 PM Friday, with a gust of 22 mph at 5 PM Friday.

Now
7mph
from the west northwest
Strongest
12mph
2 PM Friday
Highest gust
22mph
5 PM Friday
Wind and Gust at Greenville, wind from 0 to 12, the latest 7; gust from 14 to 22, the latest 17, in miles an hour.WIND AND GUSTmph01020303 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 17WINDGUST
Wind direction at Greenville, wind direction from 230 to 320, the latest 290, in degrees.WIND DIRECTION°0901802703603 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 17

How it is measured: Coriolis as geometry, Field Book FB-ENG-008

Pressure

30.11 inHg at 12 AM, rising 0.03 inHg over 3 hours; 0.05 inHg higher than a day before.

Now
30.11inHg
12 AM
3 hours
+0.03inHg
rising
24 hours
+0.05inHg
Pressure, altimeter at Greenville, pressure, altimeter from 29.90 to 30.12, the latest 30.11, in inches of mercury.PRESSURE, ALTIMETERinHg29.8029.9030.0030.1030.203 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 17

How it is measured: Hydrostatic balance, Field Book FB-ENG-003

Visibility

Down to 2 miles at 6 PM Friday; 10 miles or more now.

Now
10+mi
Lowest
2mi
6 PM Friday
Hours under a mile
0
Visibility at Greenville, visibility from 2.0 to 10.0, the latest 10.0, in miles.VISIBILITYmi02.557.5103 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 17LIFRIFRMVFRVFR

How it is measured: Fog types, Field Book FB-WAT-020

Cloud base

The lowest cloud base came down to 1,200 ft at 12 AM; a base was reported in 22 of the hours.

Lowest base now
1,200ft
Lowest in 24 hours
1,200ft
12 AM
Hours with a base reported
22
Lowest cloud base at Greenville, lowest cloud base from 1,200 to 5,500, the latest 1,200, in feet.LOWEST CLOUD BASEft02,0004,0006,0003 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 17MVFRVFR

How it is measured: Cloud classification, Field Book FB-SKY-001

Precipitation

0.10 in measured in the gauge, the most, 0.07 in, in the hour to 6 PM Friday.

Last 24 hours
0.10in
Wettest hour
0.07in
6 PM Friday
Hours with some
2
Precipitation at Greenville, precipitation from 0.00 to 0.07, the latest 0.00, in inches.PRECIPITATIONin0.000.030.050.070.103 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 17

How it is measured: ASOS, Field Book FB-INS-002

Greenville: every reading, the last 7 days, 30 days and the year, and how well it reports

What is measuring near here

The 4 instruments nearest Greeneville Municipal Airport, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.0 miles away.

measured now2 instruments

GreenvilleGCY

At an airfield/0.0 mi away/1,598 ft/10 ft below here

temp, wind, gust, visibility, precip, pressure

Unicoi 1WNWUNIT1

At a river or reservoir gauge/24.5 mi away/2,482 ft/874 ft above here

temp, wind, gust, humidity, pressure

measured daily2 instruments

Greeneville 2.8 NTN-GN-18

In a volunteer observer's own ground/0.6 mi away/1,530 ft/78 ft below here

precip, snowfall, snow depth

GreenevilleGEST1

At a cooperative observer's station/6.5 mi away/1,322 ft/286 ft below here

snowfall, snow depth, precip, high, low

-

Snow on the ground

Elsewhere in Tennessee

23 places, each with its own forecast and its own instruments.

Near Greeneville Municipal Airport

The nearest places, each with its own forecast and the instruments nearest it.

Near Greeneville Municipal Airport