Storm Station

Beside a road

RWIS network, identified by the register

Identifier
I40ST240
Latitude
35.43211 N
Longitude
95.97106 W
Elevation
-
Rank
-
Observed
1:21 AMCDT, 14 minutes ago
Air temperature
71F
Wind
4mph
Gust
5mph
Wind direction
236°
Pavement temperature
70F
Temperature under the road
77F

Beside a road

Drawn as the kind of place it stands at. 19 instruments in Oklahoma stand at one.

Station report

I-40 & Henryetta, in 2 sheets

Drawn from the register, in the manner of the Field Book, and opened beside the plates that explain each part of it.

1The sun

Contents

On Oct 11 the noon sun stands 47 degrees above the horizon at 35.43 N, and the day is 11 h 19 min long. Level ground there takes 74 per cent of the noon sunlight a surface facing the sun would.

Elevation of the noon sun at I-40 & Henryetta, angles true: on Oct 11 it stands 47 degrees above the horizon, against 78 at the June solstice, 55 at the equinoxes and 31 at the December solstice; the day is 11 h 19 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT I40ST240FIG. E THE SUN AT I-40 & HENRYETTAELEVATION LOOKING WEST, SOUTH TO THE LEFT: THE NOON SUN ON THE DAY OF THE REPORT, AND AT THE SOLSTICES AND EQUINOXES; ANGLES TRUETHE STATIONJUNE SOLSTICE 78°EQUINOXES 55°DECEMBER SOLSTICE 31°OCT 11, 47°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 11 H 19 MINLEVEL GROUND TAKES 74 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 35.43 N; THE SUN'S DECLINATION -7.2°TITLEI-40 & Henryetta, the sunSTATION REPORT · RWIS I40ST240TYPEELEVATIONSCALEANGLES TRUEREVFROM THE REGISTER SHEET 1 of 2DATE2026-10-11IDSR-I40ST240-1DRAWN AS linework on paperSOURCES FB-ENG-007

From the Field Book

2The instrument

Contents

A road weather station. Its sensors, as its network builds them.

Elevation of a road weather station, I-40 & Henryetta, each sensor drawn and labelled with what it read: no reading in the last day.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT I40ST240FIG. F THE INSTRUMENTELEVATION OF A ROAD WEATHER STATION, EACH SENSOR WITH WHAT IT READTHE ROAD, IN SECTIONPAVEMENT SENSOR, SET IN THE ROAD-PROBE UNDER THE ROAD-AIR TEMPERATURE ON THE TOWER-WIND AT THE TOP OF THE TOWER-SCHEMATIC; THE SPACING BETWEEN SENSORS IS NOT TO SCALETITLEI-40 & Henryetta, the instrumentSTATION REPORT · RWIS I40ST240TYPEELEVATIONSCALESCHEMATICREVFROM THE REGISTER SHEET 2 of 2DATE2026-10-11IDSR-I40ST240-2DRAWN AS linework on paperSOURCES FB-INS-001

From the Field Book

What this instrument measures for

1 place reads it as one of the nearest to it.

Near I-40 & Henryetta