Storm Station

Beside a road

RWIS network, identified by the register

Identifier
I40ST308
Latitude
35.44809 N
Longitude
94.80578 W
Elevation
-
Rank
-
Air temperature
68F
Wind
4mph
Gust
4mph
Wind direction
360°
Pavement temperature
69F
Temperature under the road
72F

On the radar over I-40 & SallisawReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

Beside a road

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

Station charts

I-40 & Sallisaw Report

Rank
-
Days reported, 30 days
0 of 30
Time to reach Storm Station
6 min9 in 10 within 9 min
Against its reference, 30 days
+0.2 °Fwarmer than the airport station KJSV, 0.7 miles away, on average over 204 readings; typical difference 0.9 °F

Against its reference: each temperature this station reports is compared with the nearest airport or climate reference station that reported within half an hour, up to 15 miles away. The figure is its reading less the reference's, on average, as both were reported; the typical difference is the root mean square. The difference in height is shown where both heights are known.

Chart of the 703 ranked stations in Oklahoma on Oct 4 by the share of their scheduled reports received in Storm Station's own record, up to 7 days, in tenths: 0 to 9 per cent, 5; 10 to 19 per cent, 19; 20 to 29 per cent, 2; 30 to 39 per cent, 15; 40 to 49 per cent, 18; 50 to 59 per cent, 19; 60 to 69 per cent, 65; 70 to 79 per cent, 43; 80 to 89 per cent, 29; 90 to 99 per cent, 220; 100 per cent, 268.WHERE IT RANKS IN OKLAHOMA, Oct 4PER CENT OF SCHEDULED REPORTS RECEIVEDIN STORM STATION'S OWN RECORD, UP TO 7 DAYS1101000 to 9510 to 191920 to 29230 to 391540 to 491850 to 591960 to 696570 to 794380 to 892990 to 99220100268STATIONS, LOG SCALE
The ranking these charts were drawn from, as tables
Share of scheduled reports receivedStations
100%268
90 to 99%220
80 to 89%29
70 to 79%43
60 to 69%65
50 to 59%19
40 to 49%18
30 to 39%15
20 to 29%2
10 to 19%19
0 to 9%5

Station report

I-40 & Sallisaw, 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 4 the noon sun stands 50 degrees above the horizon at 35.45 N, and the day is 11 h 34 min long. Level ground there takes 77 per cent of the noon sunlight a surface facing the sun would.

Elevation of the noon sun at I-40 & Sallisaw, angles true: on Oct 4 it stands 50 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 34 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT I40ST308FIG. E THE SUN AT I-40 & SALLISAWELEVATION 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 4, 50°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 11 H 34 MINLEVEL GROUND TAKES 77 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 35.45 N; THE SUN'S DECLINATION -4.6°TITLEI-40 & Sallisaw, the sunSTATION REPORT · RWIS I40ST308TYPEELEVATIONSCALEANGLES TRUEREVFROM THE REGISTER SHEET 1 of 2DATE2026-10-04IDSR-I40ST308-1DRAWN 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 & Sallisaw, each sensor drawn and labelled with what it read: no reading in the last day.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT I40ST308FIG. 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 & Sallisaw, the instrumentSTATION REPORT · RWIS I40ST308TYPEELEVATIONSCALESCHEMATICREVFROM THE REGISTER SHEET 2 of 2DATE2026-10-04IDSR-I40ST308-2DRAWN AS linework on paperSOURCES FB-INS-001

From the Field Book

The instrumentWhat an instrument is FB-INS-001Stevenson screen and siting FB-INS-009

What it seesLapse rates and stability FB-ENG-005Water vapour as a gas FB-ENG-011Blizzard FB-EVT-081Ice storm FB-EVT-084Heat wave and heat dome FB-EVT-130Fire weather FB-EVT-139High wind FB-EVT-150Humidity variables FB-WAT-002Fog types FB-WAT-020

Near I-40 & Sallisaw

Gauges

Weather instruments

Places