Storm Station

At a cooperative observer's station

COOP network, identified by the register

Identifier
ISAP4
Latitude
18.47000 N
Longitude
67.04000 W
Elevation
-
Rank
-

On the radar over Isabela ScanReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

At a cooperative observer's station

Drawn as the kind of place it stands at. 29 instruments in Puerto Rico stand at one.

Station report

Isabela Scan, 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 64 degrees above the horizon at 18.47 N, and the day is 11 h 41 min long. Level ground there takes 90 per cent of the noon sunlight a surface facing the sun would.

Elevation of the noon sun at Isabela Scan, angles true: on Oct 11 it stands 64 degrees above the horizon, against 85 at the June solstice, 72 at the equinoxes and 48 at the December solstice; the day is 11 h 41 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT ISAP4FIG. E THE SUN AT ISABELA SCANELEVATION 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 85°EQUINOXES 72°DECEMBER SOLSTICE 48°OCT 11, 64°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 11 H 41 MINLEVEL GROUND TAKES 90 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 18.47 N; THE SUN'S DECLINATION -7.2°TITLEIsabela Scan, the sunSTATION REPORT · COOP ISAP4TYPEELEVATIONSCALEANGLES TRUEREVFROM THE REGISTER SHEET 1 of 2DATE2026-10-11IDSR-ISAP4-1DRAWN AS linework on paperSOURCES FB-ENG-007

From the Field Book

2The instrument

Contents

A cooperative observer's station. Its sensors, as its network builds them.

Elevation of a cooperative observer's station, Isabela Scan, each sensor drawn and labelled with what it read: no reading in the last day.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT ISAP4FIG. F THE INSTRUMENTELEVATION OF A COOPERATIVE OBSERVER'S STATION, EACH SENSOR WITH WHAT IT READTHERMOMETER IN ITS SHIELD, 5 FT-STANDARD 8 INCH RAIN GAUGE-SNOW BOARD AND MEASURING STAKE-SCHEMATIC; THE SPACING BETWEEN SENSORS IS NOT TO SCALETITLEIsabela Scan, the instrumentSTATION REPORT · COOP ISAP4TYPEELEVATIONSCALESCHEMATICREVFROM THE REGISTER SHEET 2 of 2DATE2026-10-11IDSR-ISAP4-2DRAWN AS linework on paperSOURCES FB-INS-001, FB-INS-009, FB-INS-003

From the Field Book

The instrumentWhat an instrument is FB-INS-001Personal weather station FB-INS-003Stevenson screen and siting FB-INS-009

What it seesHydrostatic balance FB-ENG-003Radiation budget FB-ENG-007Nor'easter FB-EVT-066Blizzard FB-EVT-081Ice storm FB-EVT-084Heat wave and heat dome FB-EVT-130Snowpack strata FB-WAT-031

Near Isabela Scan

Weather instruments