Storm Station

Beside a road

RWIS network, identified by the register

Identifier
MX9212
Latitude
41.57565 N
Longitude
90.36233 W
Elevation
-
Rank
1,022of 1,027 in Iowa, Oct 4
Air temperature
55F
Dew point
49F
Relative humidity
81%

On the radar over I-80 @ Mississippi River BridgeReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

Beside a road

Drawn as the kind of place it stands at. 95 instruments in Iowa stand at one.

Station charts

I-80 @ Mississippi River Bridge Report

Rank 1,022 of 1,027 in Iowa, Oct 4. The 247 rank orders a state's stations by their 247 score out of 100: how reliably they report, how accurate their readings are against a reference station, how their readings pass their checks, and how they stand against the forecast.

247 score63.8of 100

  1. Reports receivedweight 3512.282 of 672 scheduled reports received in 7 days
  2. Arrivalweight 1050.2half its reports arrived within 35 min
  3. Continuityweight 1096.7longest silence 50 min, on a schedule of one report every 15 min
  4. Accuracyweight 20100.0its temperature against the airport station KMLI, 12.1 miles away, over 76 readings: typical difference 2.0 °F beyond a steady offset of +2.9 °F
  5. Instrument checksweight 15100.00 of 76 readings failed their check against its reference station
  6. Forecast checkweight 10--

The score is the weighted mean of its six parts, from the last 7 days. How a station is ranked sets out each part.

Rank
1,022of 1,027 in Iowa, Oct 4
Days reported, 30 days
0 of 30
Time to reach Storm Station
35 min9 in 10 within 39 min
Against its reference, 30 days
+3.7 °Fwarmer than the airport station KMLI, 12 miles away, on average over 126 readings; typical difference 4.3 °F

The reports received are counted from the network's own archive of this station's reports. Its 247 rank is counted from Storm Station's own record, which holds less than 7 days of it so far: 82 of 672 scheduled reports received, 12.2%.

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 1,027 ranked stations in Iowa 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, 1; 10 to 19 per cent, 4; 20 to 29 per cent, 2; 30 to 39 per cent, 26; 40 to 49 per cent, 15; 50 to 59 per cent, 13; 60 to 69 per cent, 99; 70 to 79 per cent, 17; 80 to 89 per cent, 121; 90 to 99 per cent, 437; 100 per cent, 292. I-80 @ Mississippi River Bridge received 12.2 per cent, 82 of 672 scheduled reports, rank 1,022 of 1,027.WHERE IT RANKS IN IOWA, Oct 4THIS ONE: 12.2%, 82 OF 672, RANK 1,022 OF 1,027PER CENT OF SCHEDULED REPORTS RECEIVEDIN STORM STATION'S OWN RECORD, UP TO 7 DAYS1101000 to 9110 to 19420 to 29230 to 392640 to 491550 to 591360 to 699970 to 791780 to 8912190 to 99437100292STATIONS, LOG SCALE
The ranking these charts were drawn from, as tables
Share of scheduled reports receivedStations
100%292
90 to 99%437
80 to 89%121
70 to 79%17
60 to 69%99
50 to 59%13
40 to 49%15
30 to 39%26
20 to 29%2
10 to 19%4
0 to 9%1

Station report

I-80 @ Mississippi River Bridge, 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 44 degrees above the horizon at 41.58 N, and the day is 11 h 28 min long. Level ground there takes 69 per cent of the noon sunlight a surface facing the sun would.

Elevation of the noon sun at I-80 @ Mississippi River Bridge, angles true: on Oct 4 it stands 44 degrees above the horizon, against 72 at the June solstice, 48 at the equinoxes and 25 at the December solstice; the day is 11 h 28 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MX9212FIG. E THE SUN AT I-80 @ MISSISSIPPI RIVER BRIDGEELEVATION 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 72°EQUINOXES 48°DECEMBER SOLSTICE 25°OCT 4, 44°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 11 H 28 MINLEVEL GROUND TAKES 69 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 41.58 N; THE SUN'S DECLINATION -4.6°TITLEI-80 @ Mississippi River Bridge, the sunSTATION REPORT · RWIS MX9212TYPEELEVATIONSCALEANGLES TRUEREVFROM THE REGISTER SHEET 1 of 2DATE2026-10-04IDSR-MX9212-1DRAWN 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-80 @ Mississippi River Bridge, each sensor drawn and labelled with what it read: no reading in the last day.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MX9212FIG. 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-80 @ Mississippi River Bridge, the instrumentSTATION REPORT · RWIS MX9212TYPEELEVATIONSCALESCHEMATICREVFROM THE REGISTER SHEET 2 of 2DATE2026-10-04IDSR-MX9212-2DRAWN 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-80 @ Mississippi River Bridge

Gauges

Weather instruments

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