Storm Station

In a volunteer observer's own ground

COCORAHS network, identified by the register

Identifier
PR-LM-1
Latitude
18.25630 N
Longitude
67.00350 W
Elevation
687 ft
Rank
-

On the radar over Las Marias 9.6 ESEReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

In a volunteer observer's own ground

Drawn as the kind of place it stands at. 139 instruments in Puerto Rico stand at one.

Station charts

Las Marias 9.6 ESE Report

Rank
-
Reports received, 7 days
7
Days reported, 30 days
28 of 30
Longest silence, 7 days
24 hoursfrom Oct 4, 7:00 AM
Latest report
Oct 10, 7:00 AMlocal time
Reports received at Las Marias 9.6 ESE, reports from 0.0 to 1.0, the latest 0.0, in reports.REPORTS RECEIVEDreports00.250.50.7513 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 11
Reports received at Las Marias 9.6 ESE, reports from 0.0 to 1.0, the latest 0.0, in reports.REPORTS RECEIVEDreports00.250.50.751Mon 5Tue 6Wed 7Thu 8Fri 9Sat 10Sun 11
Precipitation at Las Marias 9.6 ESE, precipitation from 0.00 to 3.46, the latest 0.71, in inches.PRECIPITATIONin0.001.002.003.004.00Sep 12Sep 17Sep 22Sep 27Oct 2Oct 7
The readings these charts were drawn from, as a table
DayPrecipitation inSnowfall in
Oct 100.71-
Oct 90.02-
Oct 80.03-
Oct 73.46-
Oct 60.06-
Oct 50.51-
Oct 40.21-
Oct 30.54-
Oct 20.14-
Oct 10.64-
Sep 300.01-
Sep 290.42-
Sep 280.21-
Sep 270.02-
Sep 260.000.00
Sep 250.05-
Sep 240.17-
Sep 230.26-
Sep 220.62-
Sep 210.73-
Sep 200.14-
Sep 190.12-
Sep 180.25-
Sep 172.45-
Sep 160.21-
Sep 150.46-
Sep 140.10-
Sep 130.000.00

Station report

Las Marias 9.6 ESE, 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 687 ft above sea level, 2 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 29.19 inHg and the temperature at 56.6 F.

Section from sea level of where Las Marias 9.6 ESE stands in the atmosphere, height to scale: the station 687 feet above sea level with 2 per cent of the air below it; the standard atmosphere's pressure there, 29.19 inches of mercury, and temperature, 56.6 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT PR-LM-1FIG. D WHERE LAS MARIAS 9.6 ESE 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 ATMOSPHERELAS MARIAS 9.6 ESE2 PER CENT OF THE AIR BELOW IT687 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 HERE29.19 inHgSTANDARD TEMPERATURE HERE56.6 FTITLELas Marias 9.6 ESE, the columnSTATION REPORT · COCORAHS PR-LM-1TYPESECTIONSCALEHEIGHT TO SCALEREVFROM THE REGISTER SHEET 1 of 3DATE2026-10-11IDSR-PRLM1-1DRAWN 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 18.26 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 Las Marias 9.6 ESE, angles true: on Oct 11 it stands 65 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 PR-LM-1FIG. E THE SUN AT LAS MARIAS 9.6 ESEELEVATION 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, 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 18.26 N; THE SUN'S DECLINATION -7.2°TITLELas Marias 9.6 ESE, the sunSTATION REPORT · COCORAHS PR-LM-1TYPEELEVATIONSCALEANGLES TRUEREVFROM THE REGISTER SHEET 2 of 3DATE2026-10-11IDSR-PRLM1-2DRAWN AS linework on paperSOURCES FB-ENG-007

From the Field Book

3The instrument

Contents

A community rain gauge, 687 ft above sea level. Its sensors, as its network builds them.

Elevation of a community rain gauge, Las Marias 9.6 ESE, each sensor drawn and labelled with what it read: no reading in the last day.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT PR-LM-1FIG. F THE INSTRUMENTELEVATION OF A COMMUNITY RAIN GAUGE, EACH SENSOR WITH WHAT IT READ4 INCH RAIN GAUGE, READ EACH MORNING-SCHEMATIC; THE SPACING BETWEEN SENSORS IS NOT TO SCALETITLELas Marias 9.6 ESE, the instrumentSTATION REPORT · COCORAHS PR-LM-1TYPEELEVATIONSCALESCHEMATICREVFROM THE REGISTER SHEET 3 of 3DATE2026-10-11IDSR-PRLM1-3DRAWN AS linework on paperSOURCES FB-INS-001, FB-INS-003

From the Field Book

The instrumentWhat an instrument is FB-INS-001Personal weather station FB-INS-003

What it seesFlash flood FB-EVT-100Snowpack strata FB-WAT-031

Near Las Marias 9.6 ESE

Weather instruments