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Lake Anna Airport, Virginia

Small airport in Louisa County, Virginia

Air quality

The air at Lake Anna Airport

Index 33, good, led by fine particles. Read at 1 AM from its reporting area, Richmond (VA), 39 miles off.

33Good
  • Fine particles (PM2.5)33Good-
  • Ozone17Good-
  • Coarse particles (PM10)12Good-

The days ahead

Moderate each day through Today, led by fine particles. Yesterday measured 52, moderate.

Smoke, the next 43 hours

Little smoke near the ground through Sat 8 PM: the index from smoke stays at 11 or under.

FriSat

Precipitation

What has fallen at Lake Anna Airport

0.06 in in the last 24 hours, and none in the 2 days before, to Fri 1 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.06in
Last 3 days
0.06in

Visibility

How far you can see at Lake Anna Airport, the next 43 hours

Visibility stays 6 miles or more through Sat 8 PM, lowest 7 miles Fri 8 AM.

FriSat

Airfield

Code
7W4
ICAO
-
IATA
-
Field elevation
355 ft
Serves
Bumpass
Kind
Small airport
Scheduled service
No
Its own instrument
7W4
Wind now
Calm, read 16 Oct, 00:55

Runways

RunwayLengthWidthSurfaceHeading, trueWind along it nowCrosswind now
08 / 262,558 ft50 ftAsphalt---

Measured here

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

Every hour from Bumpass (7W4), Lake Anna Airport's own instrument, measure by measure, on the field's own clock.

Temperature

61 F at 12 AM; 73 F at its warmest, 5 AM Thursday, and 61 F at its coolest, 11 PM Thursday.

Now
61F
12 AM
Highest
73F
5 AM Thursday
Lowest
61F
11 PM Thursday
Temperature and Dew point at Bumpass, temperature from 60.8 to 72.5, the latest 60.8; dew point from 59.5 to 69.4, the latest 60.7, in degrees Fahrenheit.TEMPERATURE AND DEW POINTF55606570753 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 16TEMPERATUREDEW 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 100% saturated; the humidity ran from 83% at 3 PM Thursday to 100% at 12 AM.

Dew point now
61F
12 AM
Humidity now
100%
Humidity, range
83 to 100%
Relative humidity at Bumpass, relative humidity from 83 to 100, the latest 100, in per cent.RELATIVE HUMIDITY%808590951003 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 16

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

Wind

Calm at 12 AM; at its strongest 5 mph, 10 AM Thursday, and no gust reported.

Now
0mph
calm
Strongest
5mph
10 AM Thursday
Highest gust
-
none reported
Wind at Bumpass, wind from 0 to 5, the latest 0, in miles an hour.WINDmph02463 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 16
Wind direction at Bumpass, wind direction from 50 to 100, the latest 100, in degrees.WIND DIRECTION°0901802703603 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 16

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

Pressure

30.08 inHg at 12 AM, falling 0.05 inHg over 3 hours; 0.04 inHg higher than a day before.

Now
30.08inHg
12 AM
3 hours
-0.05inHg
falling
24 hours
+0.04inHg
Pressure, altimeter at Bumpass, pressure, altimeter from 30.04 to 30.18, the latest 30.08, in inches of mercury.PRESSURE, ALTIMETERinHg30.0030.0530.1030.1530.203 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 16

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

Visibility

Down to 7 miles at 8 AM Thursday; 10 miles or more now.

Now
10+mi
Lowest
7mi
8 AM Thursday
Hours under a mile
0
Visibility at Bumpass, visibility from 7.0 to 10.0, the latest 10.0, in miles.VISIBILITYmi02.557.5103 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 16LIFRIFRMVFRVFR

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

Cloud base

The lowest cloud base came down to 1,000 ft at 8 PM Thursday; a base was reported in 22 of the hours.

Lowest base now
-
Lowest in 24 hours
1,000ft
8 PM Thursday
Hours with a base reported
22
Lowest cloud base at Bumpass, lowest cloud base from 1,000 to 12,000, the latest 1,000, in feet.LOWEST CLOUD BASEft05,00010,00015,0003 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 16MVFRVFR

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

Precipitation

0.01 in measured in the gauge, the most, 0.01 in, in the hour to 10 PM Thursday.

Last 24 hours
0.01in
Wettest hour
0.01in
10 PM Thursday
Hours with some
1
Precipitation at Bumpass, precipitation from 0.00 to 0.01, the latest 0.00, in inches.PRECIPITATIONin0.000.030.050.070.103 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 16

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

Bumpass: 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 Lake Anna 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 now3 instruments

Bumpass7W4

At an airfield/0.0 mi away/341 ft/14 ft below here

temp, wind, gust, visibility, precip, pressure

N Piedmont ArecS2039

At a soil climate station/27.4 mi away/520 ft/165 ft above here

temp, humidity, soil temp, soil moisture

measured daily2 instruments

Mineral 7.0 EVA-LS-11

In a volunteer observer's own ground/4.5 mi away/283 ft/72 ft below here

precip, snowfall, snow depth

LouisaLOUV2

At a cooperative observer's station/15.1 mi away/394 ft/39 ft above here

snowfall, snow depth, precip, high, low

-

Snow on the ground

Elsewhere in Virginia

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

Near Lake Anna Airport

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

Near Lake Anna Airport