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Portland Municipal Airport, Tennessee

Small airport in Sumner County, Tennessee

Air quality

The air at Portland Municipal Airport

Index 52, moderate, led by fine particles. Read at 2 AM from its reporting area, Bowling Green (KY), 26 miles off.

52Moderate
  • Fine particles (PM2.5)52Moderate-
  • Ozone23Good-

The days ahead

Yesterday measured 34, good.

Smoke, the next 41 hours

Little smoke near the ground through Sat 7 PM: the index from smoke stays at 22 or under.

FriSat

Precipitation

What has fallen at Portland Municipal Airport

0.07 in in the last 24 hours, 0.15 in over the last 3 days, to Fri 2 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.07in
Last 3 days
0.15in

Visibility

How far you can see at Portland Municipal Airport, the next 41 hours

Visibility stays 9 miles or more through Sat 7 PM, lowest 9 miles Fri 7 AM.

FriSat

Airfield

Code
1M5
ICAO
-
IATA
-
Field elevation
818 ft
Serves
Portland
Kind
Small airport
Scheduled service
No
Its own instrument
1M5
Wind now
From 190° at 8 mph, read 16 Oct, 02:55

Runways

RunwayLengthWidthSurfaceHeading, trueWind along it nowCrosswind now
01 / 195,003 ft100 ftAsphalt11° / 191°8 mph head, on 19None
01192,000 ftN190° 8 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 Portland (1M5), Portland Municipal Airport's own instrument, measure by measure, on the field's own clock.

Temperature

69 F at 2 AM; 87 F at its warmest, 1 PM Thursday, and 69 F at its coolest, 2 AM.

Now
69F
2 AM
Highest
87F
1 PM Thursday
Lowest
69F
2 AM
Temperature and Dew point at Portland, temperature from 69.2 to 87.2, the latest 69.2; dew point from 57.2 to 73.4, the latest 60.8, in degrees Fahrenheit.TEMPERATURE AND DEW POINTF50607080906 AM9 AM12 PM3 PM6 PM9 PMOct 163 AMTEMPERATUREDEW POINT

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

Humidity and dew point

A dew point of 61 F, the air 75% saturated; the humidity ran from 40% at 4 PM Thursday to 100% at 4 AM Thursday.

Dew point now
61F
2 AM
Humidity now
75%
Humidity, range
40 to 100%
Relative humidity at Portland, relative humidity from 40 to 100, the latest 75, in per cent.RELATIVE HUMIDITY%4060801006 AM9 AM12 PM3 PM6 PM9 PMOct 163 AM

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

Wind

8 mph from the south at 2 AM; at its strongest 8 mph, 10 AM Thursday, with a gust of 14 mph at 12 PM Thursday.

Now
8mph
from the south
Strongest
8mph
10 AM Thursday
Highest gust
14mph
12 PM Thursday
Wind and Gust at Portland, wind from 0 to 8, the latest 8; gust from 14 to 14, the latest 14, in miles an hour.WIND AND GUSTmph0510156 AM9 AM12 PM3 PM6 PM9 PMOct 163 AMWINDGUST
Wind direction at Portland, wind direction from 180 to 250, the latest 190, in degrees.WIND DIRECTION°0901802703606 AM9 AM12 PM3 PM6 PM9 PMOct 163 AM

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

Pressure

29.98 inHg at 2 AM, steady over 3 hours; 0.08 inHg lower than a day before.

Now
29.98inHg
2 AM
3 hours
-0.01inHg
steady
24 hours
-0.08inHg
Pressure, altimeter at Portland, pressure, altimeter from 29.98 to 30.10, the latest 29.98, in inches of mercury.PRESSURE, ALTIMETERinHg29.9530.0030.0530.106 AM9 AM12 PM3 PM6 PM9 PMOct 163 AM

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

Visibility

Down to 3 miles at 6 AM Thursday; 10 miles or more now.

Now
10+mi
Lowest
3mi
6 AM Thursday
Hours under a mile
0
Visibility at Portland, visibility from 2.5 to 10.0, the latest 10.0, in miles.VISIBILITYmi02.557.5106 AM9 AM12 PM3 PM6 PM9 PMOct 163 AMLIFRIFRMVFRVFR

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

Cloud base

The lowest cloud base came down to 300 ft at 6 AM Thursday; a base was reported in 17 of the hours.

Lowest base now
-
Lowest in 24 hours
300ft
6 AM Thursday
Hours with a base reported
17
Lowest cloud base at Portland, lowest cloud base from 300 to 12,000, the latest 12,000, in feet.LOWEST CLOUD BASEft05,00010,00015,0006 AM9 AM12 PM3 PM6 PM9 PMOct 163 AMMVFRVFR

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

Precipitation

0.07 in measured in the gauge, the most, 0.07 in, in the hour to 6 AM Thursday.

Last 24 hours
0.07in
Wettest hour
0.07in
6 AM Thursday
Hours with some
1
Precipitation at Portland, precipitation from 0.00 to 0.07, the latest 0.00, in inches.PRECIPITATIONin0.000.030.050.070.106 AM9 AM12 PM3 PM6 PM9 PMOct 163 AM

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

Portland: 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 Portland 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

Portland1M5

At an airfield/0.0 mi away/801 ft/17 ft below here

temp, wind, gust, visibility, precip, pressure

measured daily2 instruments

Portland 2.9 ETN-SR-59

In a volunteer observer's own ground/1.1 mi away/744 ft/74 ft below here

precip, snowfall, snow depth

Portland Sewage PlantPRTT1

At a cooperative observer's station/2.7 mi away/794 ft/24 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 Portland Municipal Airport

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

Near Portland Municipal Airport