Storm Station

At a cooperative observer's station

COOP network, identified by the register

Identifier
LJSP4
Latitude
18.03300 N
Longitude
67.07220 W
Elevation
122 ft
Rank
-

On the radar over Lajas SubstationReflectivityStorm 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 charts

Lajas Substation Report

Rank
-
Days reported, 30 days
14 of 30
High and Low at Lajas Substation, high from 92.0 to 97.0, the latest 97.0; low from 69.0 to 72.0, the latest 69.0, in degrees Fahrenheit.HIGH AND LOWF60708090100Sep 12Sep 17Sep 22Sep 27Oct 2Oct 7HIGHLOW
Precipitation at Lajas Substation, precipitation from 0.00 to 0.75, the latest 0.02, in inches.PRECIPITATIONin0.000.200.400.600.80Sep 12Sep 17Sep 22Sep 27Oct 2Oct 7
The readings these charts were drawn from, as a table
DayHigh FLow FPrecipitation in
Sep 3097.069.00.02
Sep 2995.071.00.00
Sep 2895.071.00.00
Sep 27--0.00
Sep 26--0.00
Sep 2594.0-0.08
Sep 2494.071.00.05
Sep 2294.071.00.17
Sep 2193.070.00.02
Sep 1892.072.00.75
Sep 1797.070.00.32
Sep 1696.072.00.00
Sep 1595.070.00.00
Sep 1497.069.00.25

Station report

Lajas Substation, 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 122 ft above sea level, 0 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 29.79 inHg and the temperature at 58.6 F.

Section from sea level of where Lajas Substation stands in the atmosphere, height to scale: the station 122 feet above sea level with 0 per cent of the air below it; the standard atmosphere's pressure there, 29.79 inches of mercury, and temperature, 58.6 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT LJSP4FIG. D WHERE LAJAS SUBSTATION 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 ATMOSPHERELAJAS SUBSTATION0 PER CENT OF THE AIR BELOW IT122 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 HERE29.79 inHgSTANDARD TEMPERATURE HERE58.6 FTITLELajas Substation, the columnSTATION REPORT · COOP LJSP4TYPESECTIONSCALEHEIGHT TO SCALEREVFROM THE REGISTER SHEET 1 of 3DATE2026-10-11IDSR-LJSP4-1DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

From the Field Book

2The sun

Contents

On Oct 11 the noon sun stands 65 degrees above the horizon at 18.03 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 Lajas Substation, angles true: on Oct 11 it stands 65 degrees above the horizon, against 85 at the June solstice, 72 at the equinoxes and 49 at the December solstice; the day is 11 h 41 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT LJSP4FIG. E THE SUN AT LAJAS SUBSTATIONELEVATION 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 49°OCT 11, 65°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 18.03 N; THE SUN'S DECLINATION -7.2°TITLELajas Substation, the sunSTATION REPORT · COOP LJSP4TYPEELEVATIONSCALEANGLES TRUEREVFROM THE REGISTER SHEET 2 of 3DATE2026-10-11IDSR-LJSP4-2DRAWN AS linework on paperSOURCES FB-ENG-007

From the Field Book

3The instrument

Contents

A cooperative observer's station, 122 ft above sea level. Its sensors, as its network builds them.

Elevation of a cooperative observer's station, Lajas Substation, each sensor drawn and labelled with what it read: no reading in the last day.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT LJSP4FIG. 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 SCALETITLELajas Substation, the instrumentSTATION REPORT · COOP LJSP4TYPEELEVATIONSCALESCHEMATICREVFROM THE REGISTER SHEET 3 of 3DATE2026-10-11IDSR-LJSP4-3DRAWN 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 Lajas Substation

Weather instruments