Storm Station
Sign in

At a river or reservoir gauge

DCP network, identified by the register

Identifier
321930086470501
Latitude
32.32514 N
Longitude
86.78470 W
Elevation
-
Rank
118of 779 in Alabama, Oct 18
Observed
1:00 AMCDT, 1 hour ago
Precipitation in the gauge's latest reading
0in

Ranking Statistics

On the radar over Precipitation Station At Robert F. Henry DamReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

At a river or reservoir gauge

Drawn as the kind of place it stands at. 68 instruments in Alabama stand at one.

Station charts

Precipitation Station At Robert F. Henry Dam Report

Rank 118 of 779 in Alabama, Oct 18. 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.

Ranking Statistics

247 score99.4of 100

Alabama median
96.2the median score of 779 stations
Scoring higher
117stations in Alabama
Sharing its score
3ranks 118 to 120
Points deducted
0.60.6 arrival
Counted at the median
Accuracy, instrument checks, forecast checknot measured at this station; Alabama median 100.0, 100.0, 100.0
Next above
WRTA1rank 114; ahead on 247 score 99.5 against 99.4
Next below
0357587728rank 120; behind on median arrival 12 min 48 s against 12 min 49 s
Sharing its rank
1other stations, equal on every measure

Equal scores are ordered by the share of scheduled reports received, then the reports due in the week (the longer record first), then the median arrival, then the longest silence.

  1. Reports receivedweight 35100.035.0 of 35 pointsAlabama median 99.4168 of 168 scheduled reports received in 7 days
  2. Arrivalweight 1094.49.4 of 10 pointsAlabama median 87.5half its reports arrived within 13 min
  3. Continuityweight 10100.010.0 of 10 pointsAlabama median 100.0longest silence 60 min, on a schedule of one report every 60 min
  4. Accuracyweight 20-20.0 of 20 points, at the medianAlabama median 100.0-
  5. Instrument checksweight 15-15.0 of 15 points, at the medianAlabama median 100.0-
  6. Forecast checkweight 10-10.0 of 10 points, at the medianAlabama median 100.0-

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

How each part is scored
Reports received
Full marks for every scheduled report received, none for none, in proportion between
Arrival
Full marks for a median arrival within 10 min, none at 60 min
Continuity
Full marks for a longest silence of 3 reports or less (3 h), none for 72 (72 h)
Accuracy
Full marks within 1.5 °F of its reference, typically, none beyond 8.0 °F
Instrument checks
Full marks for no reading failed, none for 5 per cent or more
Forecast check
Full marks within 2 °F of the forecast on average, none at 8 °F
Rank
118of 779 in Alabama, Oct 18
Schedule
every houron the hour's :00
Reports received, 24 hours
24 of 24100% of its schedule
Reports received, 7 days
168 of 168100% of its schedule
Days reported, 30 days
-
Longest silence, 7 days
63 minfrom Oct 18, 6:00 AM
Latest report
Oct 18, 6:00 AMlocal time
Time to reach Storm Station
13 min9 in 10 within 13 min

From Storm Station's own record of every report it heard from this station.

Its schedule is one report every hour, 24 in 24 hours. Two reports in the same hour count as one received.

Chart of the 779 ranked stations in Alabama on Oct 18 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, 5; 20 to 29 per cent, 10; 30 to 39 per cent, 2; 40 to 49 per cent, 39; 50 to 59 per cent, 69; 60 to 69 per cent, 14; 70 to 79 per cent, 42; 80 to 89 per cent, 97; 90 to 99 per cent, 218; 100 per cent, 283. Precipitation Station At Robert F. Henry Dam received 100.0 per cent, 168 of 168 scheduled reports, rank 118 of 779.WHERE IT RANKS IN ALABAMA, Oct 18THIS ONE: 100.0%, 168 OF 168, RANK 118 OF 779PER CENT OF SCHEDULED REPORTS RECEIVEDIN STORM STATION'S OWN RECORD, UP TO 7 DAYS1101000 to 910 to 19520 to 291030 to 39240 to 493950 to 596960 to 691470 to 794280 to 899790 to 99218100283STATIONS, LOG SCALE
Chart of Precipitation Station At Robert F. Henry Dam's rank in Alabama by how it reported, day by day, from 2026-10-07 to 2026-10-18: 2026-10-07 rank 751 of 800; 2026-10-08 rank 748 of 808; 2026-10-09 rank 649 of 800; 2026-10-10 rank 644 of 800; 2026-10-11 rank 606 of 818; 2026-10-12 rank 443 of 815; 2026-10-13 rank 116 of 804; 2026-10-14 rank 113 of 799; 2026-10-15 rank 119 of 798; 2026-10-16 rank 113 of 798; 2026-10-17 rank 121 of 781; 2026-10-18 rank 118 of 779.ITS RANK IN ALABAMA, DAY BY DAYRANK, FIRST AT THE TOP1200400600800Oct 7Oct 9Oct 11Oct 13Oct 15Oct 17Oct 18
The ranking these charts were drawn from, as tables
Share of scheduled reports receivedStations
100%283
90 to 99%218
80 to 89%97
70 to 79%42
60 to 69%14
50 to 59%69
40 to 49%39
30 to 39%2
20 to 29%10
10 to 19%5
0 to 9%0
DayRankStations rankedShare received
Oct 18, 2026118779100.0%
Oct 17, 2026121781100.0%
Oct 16, 2026113798100.0%
Oct 15, 2026119798100.0%
Oct 14, 2026113799100.0%
Oct 13, 2026116804100.0%
Oct 12, 202644381585.7%
Oct 11, 202660681871.4%
Oct 10, 202664480057.1%
Oct 9, 202664980056.5%
Oct 8, 202674880828.5%
Oct 7, 202675180014.2%

Station report

Precipitation Station At Robert F. Henry Dam, 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 18 the noon sun stands 48 degrees above the horizon at 32.33 N, and the day is 11 h 10 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 Precipitation Station At Robert F. Henry Dam, angles true: on Oct 18 it stands 48 degrees above the horizon, against 81 at the June solstice, 58 at the equinoxes and 34 at the December solstice; the day is 11 h 10 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 321930086470501FIG. E THE SUN AT PRECIPITATION STATION AT ROBERT F. HENRY DAMELEVATION 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 81°EQUINOXES 58°DECEMBER SOLSTICE 34°OCT 18, 48°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 11 H 10 MINLEVEL GROUND TAKES 74 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 32.33 N; THE SUN'S DECLINATION -9.8°TITLEPrecipitation Station At Robert F. Henry Dam, the sunSTATION REPORT · DCP 321930086470501TYPEELEVATIONSCALEANGLES TRUEREVFROM THE REGISTER SHEET 1 of 2DATE2026-10-18IDSR-321930086470501-1DRAWN AS linework on paperSOURCES FB-ENG-007

From the Field Book

2The instrument

Contents

A data collection platform. Its sensors, as its network builds them.

Elevation of a data collection platform, Precipitation Station At Robert F. Henry Dam, each sensor drawn and labelled with what it read: no reading in the last day.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 321930086470501FIG. 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 SCALETITLEPrecipitation Station At Robert F. Henry Dam, the instrumentSTATION REPORT · DCP 321930086470501TYPEELEVATIONSCALESCHEMATICREVFROM THE REGISTER SHEET 2 of 2DATE2026-10-18IDSR-321930086470501-2DRAWN 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-100River flood FB-EVT-102Coastal flood FB-EVT-105

Near Precipitation Station At Robert F. Henry Dam

Gauges

Weather instruments

Places