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Harlan Municipal Airport, Iowa

Small airport in Shelby County, Iowa

Air quality

The air at Harlan Municipal Airport

Index 21, good, led by ozone. Read at 9 PM from its reporting area, Pisgah (IA), 35 miles off.

21Good
  • Ozone21Good-

The days ahead

Good each day through Fri Oct 16, led by fine particles. Yesterday measured 17, good.

Smoke, the next 41 hours

No smoke near the ground through Sat 1 PM.

FriSat

Precipitation

What has fallen at Harlan Municipal Airport

1.05 in in the last 24 hours, and none in the 2 days before, to Thu 8 PM. Measured by radar and rain gauges, as water.

Last 24 hours
1.05in
Last 3 days
1.05in

Visibility

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

Visibility stays 8 miles or more through Sat 1 PM, lowest 8 miles Sat 5 AM.

FriSat

Airfield

Code
HNR
ICAO
KHNR
IATA
-
Field elevation
1,231 ft
Serves
Harlan
Kind
Small airport
Scheduled service
No
Its own instrument
HNR
Wind now
From 320° at 16 mph, read 15 Oct, 21:35

Runways

RunwayLengthWidthSurfaceHeading, trueWind along it nowCrosswind now
03 / 21 unlit1,693 ft120 ftGrass37° / 217°4 mph head, on 0316 mph from the left
15 / 334,100 ft75 ftAsphalt156° / 336°15 mph head, on 334 mph from the left
032115331,000 ftN320° 16 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 Harlan (HNR), Harlan Municipal Airport's own instrument, measure by measure, on the field's own clock.

Temperature

48 F at 9 PM; 54 F at its warmest, 3 AM, and 48 F at its coolest, 9 PM.

Now
48F
9 PM
Highest
54F
3 AM
Lowest
48F
9 PM
Temperature and Dew point at Harlan, temperature from 48.2 to 54.2, the latest 48.2; dew point from 39.2 to 51.8, the latest 39.2, in degrees Fahrenheit.TEMPERATURE AND DEW POINTF3540455055Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PMTEMPERATUREDEW POINT

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

Humidity and dew point

A dew point of 39 F, the air 71% saturated; the humidity ran from 71% at 9 PM to 100% at 5 AM.

Dew point now
39F
9 PM
Humidity now
71%
Humidity, range
71 to 100%
Relative humidity at Harlan, relative humidity from 71 to 100, the latest 71, in per cent.RELATIVE HUMIDITY%708090100Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PM

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

Wind

17 mph from the northwest at 9 PM; at its strongest 21 mph, 8 PM, with a gust of 35 mph at 7 PM.

Now
17mph
from the northwest
Strongest
21mph
8 PM
Highest gust
35mph
7 PM
Wind and Gust at Harlan, wind from 2 to 21, the latest 17; gust from 15 to 35, the latest 30, in miles an hour.WIND AND GUSTmph010203040Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PMWINDGUST
Wind direction at Harlan, wind direction from 10 to 350, the latest 320, in degrees.WIND DIRECTION°090180270360Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PM

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

Pressure

30.21 inHg at 9 PM, rising 0.08 inHg over 3 hours; 0.10 inHg higher than a day before.

Now
30.21inHg
9 PM
3 hours
+0.08inHg
rising
24 hours
+0.10inHg
Pressure, altimeter at Harlan, pressure, altimeter from 30.01 to 30.21, the latest 30.21, in inches of mercury.PRESSURE, ALTIMETERinHg30.0030.0530.1030.1530.2030.25Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PM

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

Visibility

Down to 1 miles at 7 AM; 10 miles or more now.

Now
10+mi
Lowest
1mi
7 AM
Hours under a mile
0
Visibility at Harlan, visibility from 1.3 to 10.0, the latest 10.0, in miles.VISIBILITYmi02.557.510Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PMLIFRIFRMVFRVFR

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

Cloud base

The lowest cloud base came down to 300 ft at 5 AM; a base was reported in 24 of the hours.

Lowest base now
4,600ft
Lowest in 24 hours
300ft
5 AM
Hours with a base reported
24
Lowest cloud base at Harlan, lowest cloud base from 300 to 4,600, the latest 4,600, in feet.LOWEST CLOUD BASEft02,0004,0006,000Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PMMVFRVFR

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

Precipitation

1.05 in measured in the gauge, the most, 0.37 in, in the hour to 11 AM.

Last 24 hours
1.05in
Wettest hour
0.37in
11 AM
Hours with some
11
Precipitation at Harlan, precipitation from 0.00 to 0.37, the latest 0.00, in inches.PRECIPITATIONin0.000.100.200.300.40Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PM

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

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

What is measuring near here

The 5 instruments nearest Harlan Municipal Airport, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.2 miles away.

measured now3 instruments

HarlanHNR

At an airfield/0.2 mi away/1,194 ft/37 ft below here

temp, wind, gust, visibility, precip, pressure

Avoca (I-80)RAVI4

Beside a road/6.5 mi away/1,237 ft/6 ft above here

temp, pavement temp, wind, visibility, precip

Irwin 3 ESEIRWI4

At a river or reservoir gauge/16.1 mi away/1,322 ft/91 ft above here

temp, wind, gust, humidity, pressure

measured daily2 instruments

Kirkman 1.0 SEIA-SH-6

In a volunteer observer's own ground/10.3 mi away/1,284 ft/53 ft above here

precip, snowfall, snow depth

OaklandOAKI4

At a cooperative observer's station/18.9 mi away/1,188 ft/43 ft below here

snowfall, snow depth, precip, high, low

0in

Snow on the ground

Measured at Oakland (OAKI4), 18.9 miles from here, read 15 Oct, 07:00. measured daily

Elsewhere in Iowa

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

Near Harlan Municipal Airport

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

Near Harlan Municipal Airport