Airports/Wisconsin/Tri-County Regional Airport

Tri-County Regional Airport, Wisconsin

Small airport in Sauk County, Wisconsin

52° 59°/46°

Overcast· Feels like 52°·Moderate breeze 15 mph WNW

Alert. A Freeze Watch is in force for Tri-County Regional Airport until 9 AM Saturday. Read the alert in full, and see what it means in the Field Book.

Now. Tri-County Regional Airport is 52° and overcast at 10 PM. The dew point is 48°, so the air feels dry and comfortable. Moderate breeze from the west-northwest at 15 mph, gusting to 28 mph.

Today and tonight. Tonight falls to about 43° by 8 AM, under cloud. No rain is expected for the rest of the day.

The week. The warmest day ahead is Wednesday, near 72°, and the coolest tomorrow, near 54°. Rain is possible tomorrow (45%). The first freeze could come Saturday, a low of 27°.

The sky now. The Moon is a waxing crescent, 26% lit, and stays below the horizon until dawn. The next full Moon is Sunday, Oct 25. Look for Saturn, bright in the south-southeast. A planet shines with a steady light where the stars around it twinkle. The Orionids meteor shower is active, peaking around Oct 21: at its peak, up to about 20 meteors an hour can be seen from a dark site. Cloud is forecast to cover most of the night, so the sky will be hard to see. The day is 11 hours 5 minutes long, 3 minutes shorter than yesterday.

0UV Low

13Air quality

86%Humidity

100%Cloud

Now

10:00 PM

52feels52

16%

15mph

Today

Oct 15

5946

100%

14mph

Fri

Oct 16

5440

45%

18mph

Sat

Oct 17

5727

Sun

Oct 18

6437

14mph

Mon

Oct 19

6639

Tue

Oct 20

7039

Wed

Oct 21

7243

52°

59°46°

54°40°

57°27°

64°37°

66°39°

70°39°

72°43°

As of 10:00 PM in Tri-County Regional Airport, Wisconsin.

Air quality

The air at Tri-County Regional Airport

Index 13, good, led by fine particles. Read at 10 PM from its reporting area, Driftless Area South (WI), 20 miles off.

13Good

Fine particles (PM2.5)13Good-

The days ahead

Good each day through Sat Oct 17, led by ozone. Yesterday measured 26, good.

GoodModerate

26YesterdayOct 14
GoodTodayOct 15
GoodFriOct 16
GoodSatOct 17

Smoke, the next 46 hours

No smoke near the ground through Sat 7 PM.

Precipitation

What has fallen at Tri-County Regional Airport

1.20 in in the last 24 hours, and none in the 2 days before, to Thu 9 PM. Measured by radar and rain gauges, as water.

Last 24 hours: 1.20in
Last 3 days: 1.20in

Visibility

How far you can see at Tri-County Regional Airport, the next 46 hours

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

Airfield

Code: LNR
ICAO: KLNR
IATA: LNR
Field elevation: 717 ft
Serves: Spring Green
Kind: Small airport
Scheduled service: No
Its own instrument: LNR
Wind now: From 300° at 16 mph, read 15 Oct, 22:21

Runways

Runway	Length	Width	Surface	Heading, true	Wind along it now	Crosswind now
09 / 27	5,000 ft	75 ft	Asphalt	90° / 270°	14 mph head, on 27	8 mph from the right
18 / 36	1,850 ft	60 ft	Asphalt	179° / 359°	8 mph head, on 36	14 mph from the left

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 Lone Rock (LNR), Tri-County Regional Airport's own instrument, measure by measure, on the field's own clock.

Temperature

52 F at 10 PM; 56 F at its warmest, 11 PM Wednesday, and 52 F at its coolest, 10 PM.

Now: 52F; 10 PM
Highest: 56F; 11 PM Wednesday
Lowest: 52F; 10 PM

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

Humidity and dew point

A dew point of 49 F, the air 89% saturated; the humidity ran from 74% at 12 AM to 98% at 11 AM.

Dew point now: 49F; 10 PM
Humidity now: 89%
Humidity, range: 74 to 98%

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

Wind

16 mph from the west northwest at 10 PM; at its strongest 16 mph, 10 PM, with a gust of 32 mph at 10 PM.

Now: 16mph; from the west northwest
Strongest: 16mph; 10 PM
Highest gust: 32mph; 10 PM

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

Pressure

29.86 inHg at 10 PM, rising 0.03 inHg over 3 hours; 0.32 inHg lower than a day before.

Now: 29.86inHg; 10 PM
3 hours: +0.03inHg; rising
24 hours: -0.32inHg

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

Visibility

Down to 0.8 miles at 3 PM, under a mile for 1 hour; 8 miles now.

Now: 8mi
Lowest: 0.8mi; 3 PM
Hours under a mile: 1

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

Cloud base

The lowest cloud base came down to 500 ft at 7 PM; a base was reported in 24 of the hours.

Lowest base now: 1,400ft
Lowest in 24 hours: 500ft; 7 PM
Hours with a base reported: 24

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

Precipitation

1.24 in measured in the gauge, the most, 0.39 in, in the hour to 12 PM.

Last 24 hours: 1.24in
Wettest hour: 0.39in; 12 PM
Hours with some: 16

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

Lone Rock: 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 Tri-County Regional 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 now4 instruments

Lone RockLNR

At an airfield/0.2 mi away/712 ft/5 ft below here

temp, wind, gust, visibility, precip, pressure

Dodgeville 4NDLEW3

At a river or reservoir gauge/13.3 mi away/1,243 ft/526 ft above here

temp, wind, gust, humidity, pressure

Dodgeville - USH 151 @ Brennan Rd.DODW3

Beside a road/18.6 mi away/1,081 ft/364 ft above here

temp, pavement temp, wind, visibility, precip

PlattevilleS2196

At a soil climate station/36.7 mi away/1,014 ft/297 ft above here