Storm Station

At a river or reservoir gauge

DCP network, identified by the register

Identifier
212428157511201
Latitude
21.40488 N
Longitude
157.85045 W
Elevation
1,100 ft
Rank
358of 372 in Hawaii, Oct 7
Precipitation in the gauge's latest reading
0in

On the radar over 771.11 N. Halawa Valley RG at tunnel, OahuReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

At a river or reservoir gauge

Drawn as the kind of place it stands at. 37 instruments in Hawaii stand at one.

Station charts

771.11 N. Halawa Valley RG at tunnel, Oahu Report

Rank 358 of 372 in Hawaii, Oct 7. 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 score66.4of 100

  1. Reports receivedweight 3514.324 of 168 scheduled reports received in 7 days
  2. Arrivalweight 1064.3half its reports arrived within 28 min
  3. Continuityweight 10100.0longest silence 76 min, on a schedule of one report every 60 min
  4. Accuracyweight 20--
  5. Instrument checksweight 15--
  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
358of 372 in Hawaii, Oct 7
Days reported, 30 days
0 of 30

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: 24 of 168 scheduled reports received, 14.2%.

Chart of the 372 ranked stations in Hawaii on Oct 7 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, 0; 10 to 19 per cent, 30; 20 to 29 per cent, 1; 30 to 39 per cent, 6; 40 to 49 per cent, 12; 50 to 59 per cent, 16; 60 to 69 per cent, 16; 70 to 79 per cent, 11; 80 to 89 per cent, 29; 90 to 99 per cent, 172; 100 per cent, 79. 771.11 N. Halawa Valley RG at tunnel, Oahu received 14.2 per cent, 24 of 168 scheduled reports, rank 358 of 372.WHERE IT RANKS IN HAWAII, Oct 7THIS ONE: 14.2%, 24 OF 168, RANK 358 OF 372PER CENT OF SCHEDULED REPORTS RECEIVEDIN STORM STATION'S OWN RECORD, UP TO 7 DAYS1101000 to 910 to 193020 to 29130 to 39640 to 491250 to 591660 to 691670 to 791180 to 892990 to 9917210079STATIONS, LOG SCALE
The ranking these charts were drawn from, as tables
Share of scheduled reports receivedStations
100%79
90 to 99%172
80 to 89%29
70 to 79%11
60 to 69%16
50 to 59%16
40 to 49%12
30 to 39%6
20 to 29%1
10 to 19%30
0 to 9%0

Station report

771.11 N. Halawa Valley RG at tunnel, Oahu, in 3 sheets

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

1The column

Contents

At 1,100 ft above sea level, 4 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 28.75 inHg and the temperature at 55.1 F.

Section from sea level of where 771.11 N. Halawa Valley RG at tunnel, Oahu stands in the atmosphere, height to scale: the station 1,100 feet above sea level with 4 per cent of the air below it; the standard atmosphere's pressure there, 28.75 inches of mercury, and temperature, 55.1 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 212428157511201FIG. D WHERE 771.11 N. HALAWA VALLEY RG AT TUNNEL, OAHU STANDS IN THE ATMOSPHERESECTION FROM SEA LEVEL, HEIGHT TO SCALE, THE STATION IN THE STANDARD ATMOSPHEREFT ABOVE SEA LEVEL05,00010,00015,000SEA LEVEL, 29.92 inHg IN THE STANDARD ATMOSPHERE771.11 N. HALAWA VALLEY RG AT TUNNEL, OAHU4 PER CENT OF THE AIR BELOW IT1,100 FT10 PER CENT OF THE AIR BELOW, 2,890 FT20 PER CENT OF THE AIR BELOW, 6,050 FT30 PER CENT OF THE AIR BELOW, 9,540 FT40 PER CENT OF THE AIR BELOW, 13,470 FTSTANDARD PRESSURE HERE28.75 inHgSTANDARD TEMPERATURE HERE55.1 FTITLE771.11 N. Halawa Valley RG at tunnel, Oahu, the columnSTATION REPORT · DCP 212428157511201TYPESECTIONSCALEHEIGHT TO SCALEREVFROM THE REGISTER SHEET 1 of 3DATE2026-10-07IDSR-212428157511201-1DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

From the Field Book

2The sun

Contents

On Oct 7 the noon sun stands 63 degrees above the horizon at 21.40 N, and the day is 11 h 42 min long. Level ground there takes 89 per cent of the noon sunlight a surface facing the sun would.

Elevation of the noon sun at 771.11 N. Halawa Valley RG at tunnel, Oahu, angles true: on Oct 7 it stands 63 degrees above the horizon, against 88 at the June solstice, 69 at the equinoxes and 45 at the December solstice; the day is 11 h 42 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 212428157511201FIG. E THE SUN AT 771.11 N. HALAWA VALLEY RG AT TUNNEL, OAHUELEVATION 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 88°EQUINOXES 69°DECEMBER SOLSTICE 45°OCT 7, 63°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 11 H 42 MINLEVEL GROUND TAKES 89 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 21.40 N; THE SUN'S DECLINATION -5.8°TITLE771.11 N. Halawa Valley RG at tunnel, Oahu, the sunSTATION REPORT · DCP 212428157511201TYPEELEVATIONSCALEANGLES TRUEREVFROM THE REGISTER SHEET 2 of 3DATE2026-10-07IDSR-212428157511201-2DRAWN AS linework on paperSOURCES FB-ENG-007

From the Field Book

3The instrument

Contents

A data collection platform, 1,100 ft above sea level. Its sensors, as its network builds them.

Elevation of a data collection platform, 771.11 N. Halawa Valley RG at tunnel, Oahu, each sensor drawn and labelled with what it read: no reading in the last day.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 212428157511201FIG. F THE INSTRUMENTELEVATION OF A DATA COLLECTION PLATFORM, EACH SENSOR WITH WHAT IT READANTENNA, SENDING BY SATELLITE-AIR TEMPERATURE-PRECIPITATION GAUGE-SCHEMATIC; THE SPACING BETWEEN SENSORS IS NOT TO SCALETITLE771.11 N. Halawa Valley RG at tunnel, Oahu, the instrumentSTATION REPORT · DCP 212428157511201TYPEELEVATIONSCALESCHEMATICREVFROM THE REGISTER SHEET 3 of 3DATE2026-10-07IDSR-212428157511201-3DRAWN AS linework on paperSOURCES FB-INS-001

From the Field Book

The instrumentWhat an instrument is FB-INS-001

What it seesMoon and tides FB-CLK-003Hurricane FB-EVT-043Nor'easter FB-EVT-066Flash flood FB-EVT-100Coastal flood FB-EVT-105

What this instrument measures for

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

Near 771.11 N. Halawa Valley RG at tunnel, Oahu

Gauges

Weather instruments

Places