Storm Station

At a cooperative observer's station

COOP network, identified by the register

Identifier
GUYP4
Latitude
17.97860 N
Longitude
66.08720 W
Elevation
75 ft
Rank
-
Observed
6:00 AMAST, 3 days ago
Air temperature
-
High so far today
-
Low so far today
-
Precipitation today
-

On the radar over GuayamaReflectivityStorm 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

Guayama Report

Rank
-
Reports received, 7 days
5
Days reported, 30 days
27 of 30
Longest silence, 7 days
2 days 21 hoursfrom Oct 8, 6:00 AM
Latest report
Oct 8, 6:00 AMlocal time
Temperature at Guayama, temperature from 79.3 to 81.3, the latest 79.3, in degrees Fahrenheit.TEMPERATUREF7979.58080.58181.5Mon 5Tue 6Wed 7Thu 8Fri 9Sat 10Sun 11
Reports received at Guayama, 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
The readings these charts were drawn from, as a table
HourTemperature FReports
Thu 8, 6 AM79.31
Wed 7, 6 AM81.31
High and Low at Guayama, high from 88.0 to 94.0, the latest 88.0; low from 73.0 to 80.0, the latest 73.0, in degrees Fahrenheit.HIGH AND LOWF708090100Sep 12Sep 17Sep 22Sep 27Oct 2Oct 7HIGHLOW
Precipitation at Guayama, precipitation from 0.00 to 1.86, the latest 1.86, in inches.PRECIPITATIONin0.000.501.001.502.00Sep 12Sep 17Sep 22Sep 27Oct 2Oct 7
The readings these charts were drawn from, as a table
DayHigh FLow FPrecipitation in
Oct 888.073.01.86
Oct 793.075.00.81
Oct 692.078.00.00
Oct 590.077.00.02
Oct 491.075.00.15
Oct 391.075.00.06
Oct 292.074.00.69
Oct 192.076.00.13
Sep 3092.080.00.00
Sep 2992.075.00.03
Sep 2893.076.00.00
Sep 2791.076.00.00
Sep 2691.075.00.00
Sep 2592.075.00.00
Sep 2492.076.00.64
Sep 2392.076.00.00
Sep 2289.075.00.10
Sep 2190.075.00.11
Sep 2091.076.00.00
Sep 1991.075.00.00
Sep 1889.075.00.53
Sep 1791.077.00.24
Sep 1689.079.00.04
Sep 1589.079.00.09
Sep 1491.076.00.30
Sep 1394.079.00.00
Sep 1291.079.00.00

Station report

Guayama, 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 75 ft above sea level, 0 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 29.84 inHg and the temperature at 58.7 F.

Section from sea level of where Guayama stands in the atmosphere, height to scale: the station 75 feet above sea level with 0 per cent of the air below it; the standard atmosphere's pressure there, 29.84 inches of mercury, and temperature, 58.7 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT GUYP4FIG. D WHERE GUAYAMA 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 ATMOSPHEREGUAYAMA0 PER CENT OF THE AIR BELOW IT75 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 HERE29.84 inHgSTANDARD TEMPERATURE HERE58.7 FTITLEGuayama, the columnSTATION REPORT · COOP GUYP4TYPESECTIONSCALEHEIGHT TO SCALEREVFROM THE REGISTER SHEET 1 of 3DATE2026-10-11IDSR-GUYP4-1DRAWN 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 17.98 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 Guayama, 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 GUYP4FIG. E THE SUN AT GUAYAMAELEVATION 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 17.98 N; THE SUN'S DECLINATION -7.2°TITLEGuayama, the sunSTATION REPORT · COOP GUYP4TYPEELEVATIONSCALEANGLES TRUEREVFROM THE REGISTER SHEET 2 of 3DATE2026-10-11IDSR-GUYP4-2DRAWN AS linework on paperSOURCES FB-ENG-007

From the Field Book

3The instrument

Contents

A cooperative observer's station, 75 ft above sea level. Its sensors, as its network builds them.

Elevation of a cooperative observer's station, Guayama, each sensor drawn and labelled with what it read: no reading in the last day.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT GUYP4FIG. 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 SCALETITLEGuayama, the instrumentSTATION REPORT · COOP GUYP4TYPEELEVATIONSCALESCHEMATICREVFROM THE REGISTER SHEET 3 of 3DATE2026-10-11IDSR-GUYP4-3DRAWN 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 Guayama

Weather instruments