Storm Station
Sign in

J. Randy McKnight Nephi Municipal Airport, Utah

Small airport in Juab County, Utah

Air quality

The air at J. Randy McKnight Nephi Municipal Airport

Index 43, good, led by fine particles. Read at 9 PM from its reporting area, Provo (UT), 36 miles off.

43Good
  • Fine particles (PM2.5)43Good-
  • Ozone31Good-
  • Coarse particles (PM10)10Good-

The days ahead

Good each day through Sat Oct 17, led by fine particles. Yesterday measured 28, good.

Smoke, the next 45 hours

Little smoke near the ground through Sat 6 PM: the index from smoke stays at 11 or under.

FriSat

Precipitation

What has fallen at J. Randy McKnight Nephi Municipal Airport

None in the last 24 hours; 0.31 in over the last 3 days, to Thu 9 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
0.31in

Visibility

How far you can see at J. Randy McKnight Nephi Municipal Airport, the next 45 hours

Visibility stays 10 miles or more through Sat 6 PM.

FriSat

Airfield

Code
U14
ICAO
-
IATA
NPH
Field elevation
5,022 ft
Serves
Nephi
Kind
Small airport
Scheduled service
No
Its own instrument
U14
Wind now
From 330° at 7 mph, read 15 Oct, 22:15

Runways

RunwayLengthWidthSurfaceHeading, trueWind along it nowCrosswind now
17 / 356,300 ft100 ftAsphalt180° / 0°6 mph head, on 354 mph from the left
17352,000 ftN330° 7 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 Nephi (U14), J. Randy McKnight Nephi Municipal Airport's own instrument, measure by measure, on the field's own clock.

Temperature

51 F at 9 PM; 61 F at its warmest, 4 PM, and 33 F at its coolest, 7 AM.

Now
51F
9 PM
Highest
61F
4 PM
Lowest
33F
7 AM
Temperature and Dew point at Nephi, temperature from 33.2 to 61.4, the latest 51.2; dew point from 33.2 to 44.0, the latest 41.0, in degrees Fahrenheit.TEMPERATURE AND DEW POINTF3040506070Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PMFREEZINGTEMPERATUREDEW POINT

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

Humidity and dew point

A dew point of 41 F, the air 68% saturated; the humidity ran from 48% at 5 PM to 100% at 5 AM.

Dew point now
41F
9 PM
Humidity now
68%
Humidity, range
48 to 100%
Relative humidity at Nephi, relative humidity from 48 to 100, the latest 68, in per cent.RELATIVE HUMIDITY%406080100Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PM

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

Wind

7 mph from the northeast at 9 PM; at its strongest 17 mph, 3 PM, with a gust of 22 mph at 2 PM.

Now
7mph
from the northeast
Strongest
17mph
3 PM
Highest gust
22mph
2 PM
Wind and Gust at Nephi, wind from 2 to 17, the latest 7; gust from 20 to 22, the latest 21, in miles an hour.WIND AND GUSTmph0510152025Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PMWINDGUST
Wind direction at Nephi, wind direction from 10 to 360, the latest 40, 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

30.56 inHg at 9 PM, rising 0.06 inHg over 3 hours; 0.25 inHg higher than a day before.

Now
30.56inHg
9 PM
3 hours
+0.06inHg
rising
24 hours
+0.25inHg
Pressure, altimeter at Nephi, pressure, altimeter from 30.31 to 30.56, the latest 30.56, in inches of mercury.PRESSURE, ALTIMETERinHg30.3030.4030.5030.60Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PM

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

Visibility

10 miles or more every hour.

Now
10+mi
Lowest
10+mi
Hours under a mile
0
Visibility at Nephi, visibility from 10.0 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 3,400 ft at 8 AM; a base was reported in 9 of the hours.

Lowest base now
-
Lowest in 24 hours
3,400ft
8 AM
Hours with a base reported
9
Lowest cloud base at Nephi, lowest cloud base from 3,400 to 6,000, the latest 6,000, in feet.LOWEST CLOUD BASEft3,0004,0005,0006,000Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PMVFR

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

Precipitation

None measured in the gauge in the last 24 hours.

Last 24 hours
0.00in
Wettest hour
-
Hours with some
0

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

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

What is measuring near here

The 6 instruments nearest J. Randy McKnight Nephi 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 now4 instruments

NephiU14

At an airfield/0.0 mi away/5,007 ft/15 ft below here

temp, wind, gust, visibility, precip, pressure

NephiS2137

At a soil climate station/6.3 mi away/5,245 ft/223 ft above here

temp, humidity, soil temp, soil moisture

Nephi ScanNPIU1

At a river or reservoir gauge/6.3 mi away/5,255 ft/233 ft above here

temp, wind, gust, humidity, pressure

measured daily2 instruments

NephiNEPU1

At a cooperative observer's station/2.6 mi away/5,157 ft/135 ft above here

snowfall, snow depth, precip, high, low

Mona 1.5 SSEUT-JB-2

In a volunteer observer's own ground/4.1 mi away/5,046 ft/24 ft above here

precip, snowfall, snow depth

0in

Snow on the ground

Measured at Nephi (NEPU1), 2.6 miles from here, read 11 Oct, 23:59. measured daily

Elsewhere in Utah

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

Near J. Randy McKnight Nephi Municipal Airport

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

Near J. Randy McKnight Nephi Municipal Airport