Storm Station
Sign in

At an airfield

ASOS network, identified by the register

Identifier
TJIG
Latitude
18.45680 N
Longitude
66.09850 W
Elevation
9 ft
Rank
237of 243 in Puerto Rico, Oct 16
Observed
6:45 PMAST, 8 hours ago
Sky
-
Air temperature
-
What it feels like
-
High so far today
-
Low so far today
-
Dew point
-
Relative humidity
-
Visibility
-
Pressure
-
Wind
-
Strongest wind today
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Wind direction
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Precipitation this hour
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Ranking Statistics

On the radar over San JuanReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

At an airfield

Drawn as the kind of place it stands at. 6 instruments in Puerto Rico stand at one.

Station charts

San Juan Report

Rank 237 of 243 in Puerto Rico, Oct 16. 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 score79.6of 100

Puerto Rico median
97.5the median score of 243 stations
Scoring higher
236stations in Puerto Rico
Sharing its score
1no other station
Points deducted
20.415.4 reports received, 4.7 continuity, 0.3 arrival
Counted at the median
Accuracynot measured at this station; Puerto Rico median 100.0
Next above
NASP4rank 236; ahead on 247 score 79.8 against 79.6
Next below
PR-LR-5rank 238; behind on 247 score 79.6 against 78.3

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 3555.919.6 of 35 pointsPuerto Rico median 99.162 of 111 scheduled reports received in 7 days
  2. Arrivalweight 1096.79.7 of 10 pointsPuerto Rico median 84.7half its reports arrived within 12 min
  3. Continuityweight 1053.55.4 of 10 pointsPuerto Rico median 100.0longest silence 13.2 h, on a schedule of one report every 60 min
  4. Accuracyweight 20-20.0 of 20 points, at the medianPuerto Rico median 100.0-
  5. Instrument checksweight 15100.015.0 of 15 pointsPuerto Rico median 100.00 of 76 readings failed the next day's check against the stations around it
  6. Forecast checkweight 10100.010.0 of 10 pointsPuerto Rico median 100.0its temperature within 1.7 °F of Storm Station's forecast on average, over 316 hours checked the next day

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 2.1 °F of its reference, typically, none beyond 8.6 °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
237of 243 in Puerto Rico, Oct 16
Schedule
every houron the hour's :45
Reports received, 24 hours
13 of 2454.1% of its schedule
Reports received, 7 days
89 of 16852.9% of its schedule
Days reported, 30 days
29 of 30
Longest silence, 7 days
13 h 10 minfrom Oct 13, 5:45 PM
Latest report
Oct 15, 6:45 PMlocal time
Time to reach Storm Station
12 min9 in 10 within 12 min
Against its reference, 30 days
+0.2 °Fwarmer than the airport station TJSJ, 6.0 miles away, on average over 5 readings; typical difference 1.4 °F

The reports received are counted from the network's own archive of this station's reports. Its 247 rank is counted from Storm Station's own record, which holds less than 7 days of it so far: 62 of 111 scheduled reports received, 55.8%.

Against its reference: each temperature this station reports is compared with the nearest airport or climate reference station that reported within half an hour, up to 15 miles away. The figure is its reading less the reference's, on average, as both were reported; the typical difference is the root mean square. The difference in height is shown where both heights are known.

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

The forecast here, October 14, 2026

Temperature, mean miss
1.3 Fran -1.0 F over 50 forecast hours; corrected, 1.1 F
Dew point, mean miss
1.0 Fran -0.3 F over 50 forecast hours; corrected, 1.1 F
Wind, mean miss
2.5 mphran -1.0 mph over 46 forecast hours; corrected, 2.3 mph
Sky cover, mean miss
22.3 %ran +17.0 % over 50 forecast hours; corrected, 32.9 %

Each hour’s forecast against this airfield’s own report, the day after. Every airfield, scored.

Chart of the 243 ranked stations in Puerto Rico on Oct 16 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, 0; 20 to 29 per cent, 1; 30 to 39 per cent, 0; 40 to 49 per cent, 0; 50 to 59 per cent, 10; 60 to 69 per cent, 0; 70 to 79 per cent, 14; 80 to 89 per cent, 3; 90 to 99 per cent, 115; 100 per cent, 100. San Juan received 55.8 per cent, 62 of 111 scheduled reports, rank 237 of 243.WHERE IT RANKS IN PUERTO RICO, Oct 16THIS ONE: 55.8%, 62 OF 111, RANK 237 OF 243PER CENT OF SCHEDULED REPORTS RECEIVEDIN STORM STATION'S OWN RECORD, UP TO 7 DAYS1101000 to 910 to 1920 to 29130 to 3940 to 4950 to 591060 to 6970 to 791480 to 89390 to 99115100100STATIONS, LOG SCALE
Chart of San Juan's rank in Puerto Rico by how it reported, day by day, from 2026-10-12 to 2026-10-16: 2026-10-12 rank 168 of 185; 2026-10-13 rank 185 of 187; 2026-10-14 rank 228 of 233; 2026-10-15 rank 230 of 236; 2026-10-16 rank 237 of 243.ITS RANK IN PUERTO RICO, DAY BY DAYRANK, FIRST AT THE TOP1100200300Oct 12Oct 13Oct 14Oct 15Oct 16
The ranking these charts were drawn from, as tables
Share of scheduled reports receivedStations
100%100
90 to 99%115
80 to 89%3
70 to 79%14
60 to 69%0
50 to 59%10
40 to 49%0
30 to 39%0
20 to 29%1
10 to 19%0
0 to 9%0
DayRankStations rankedShare received
Oct 16, 202623724355.8%
Oct 15, 202623023657.4%
Oct 14, 202622823360.3%
Oct 13, 202618518764.1%
Oct 12, 202616818580.0%
Temperature and Dew point at San Juan, temperature from 80.6 to 87.8, the latest 84.2; dew point from 75.2 to 77.0, the latest 75.2, in degrees Fahrenheit.TEMPERATURE AND DEW POINTF758085903 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 16TEMPERATUREDEW POINT
Relative humidity at San Juan, relative humidity from 66 to 84, the latest 75, in per cent.RELATIVE HUMIDITY%65707580853 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 16
Wind at San Juan, wind from 3 to 15, the latest 12, in miles an hour.WINDmph0510153 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 16
Wind direction at San Juan, wind direction from 80 to 150, the latest 100, in degrees.WIND DIRECTION°0901802703603 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 16
Pressure, altimeter at San Juan, pressure, altimeter from 29.91 to 30.02, the latest 29.94, in inches of mercury.PRESSURE, ALTIMETERinHg29.9029.9530.0030.053 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 16
Visibility at San Juan, visibility from 10.0 to 10.0, the latest 10.0, in miles.VISIBILITYmi02.557.5103 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 16LIFRIFRMVFRVFR
Lowest cloud base at San Juan, lowest cloud base from 3,000 to 3,500, the latest 3,500, in feet.LOWEST CLOUD BASEft3,0003,2003,4003,6003 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 16VFR
Reports received at San Juan, 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 16
The readings these charts were drawn from, as a table
HourTemperature FDew point FRelative humidity %Wind mphGust mphWind direction °Pressure, altimeter inHgVisibility miLowest cloud base ftPrecipitation inReports
Thu 15, 6 PM84.275.27512-10029.9410.03,5000.001
Thu 15, 5 PM84.277.07912-9029.9310.03,5000.001
Thu 15, 4 PM86.077.07515-8029.9110.03,5000.001
Thu 15, 3 PM87.877.07113-9029.9110.03,5000.001
Thu 15, 2 PM87.877.07114-10029.9110.03,5000.001
Thu 15, 1 PM87.875.26615-8029.9210.03,5000.001
Thu 15, 12 PM87.877.07113-9029.9510.03,5000.001
Thu 15, 11 AM87.877.07112-8029.9810.03,5000.001
Thu 15, 10 AM87.877.07112-10030.0010.03,5000.001
Thu 15, 9 AM86.077.0759-9030.0210.03,0000.001
Thu 15, 8 AM86.077.0756-15030.0010.03,0000.001
Thu 15, 7 AM80.675.2843-15030.0010.03,0000.001
Thu 15, 6 AM80.675.28491613029.9810.03,0000.001
Temperature and Dew point at San Juan, temperature from 77.0 to 89.6, the latest 84.2; dew point from 71.6 to 78.8, the latest 75.2, in degrees Fahrenheit.TEMPERATURE AND DEW POINTF7075808590Sat 10Sun 11Mon 12Tue 13Wed 14Thu 15Fri 16TEMPERATUREDEW POINT
Relative humidity at San Juan, relative humidity from 63 to 89, the latest 75, in per cent.RELATIVE HUMIDITY%60708090Sat 10Sun 11Mon 12Tue 13Wed 14Thu 15Fri 16
Wind and Gust at San Juan, wind from 0 to 17, the latest 12; gust from 16 to 24, the latest 16, in miles an hour.WIND AND GUSTmph0102030Sat 10Sun 11Mon 12Tue 13Wed 14Thu 15Fri 16WINDGUST
Wind direction at San Juan, wind direction from 30 to 300, the latest 100, in degrees.WIND DIRECTION°090180270360Sat 10Sun 11Mon 12Tue 13Wed 14Thu 15Fri 16
Pressure, altimeter at San Juan, pressure, altimeter from 29.89 to 30.06, the latest 29.94, in inches of mercury.PRESSURE, ALTIMETERinHg29.8529.9029.9530.0030.0530.10Sat 10Sun 11Mon 12Tue 13Wed 14Thu 15Fri 16
Visibility at San Juan, visibility from 7.0 to 10.0, the latest 10.0, in miles.VISIBILITYmi02.557.510Sat 10Sun 11Mon 12Tue 13Wed 14Thu 15Fri 16LIFRIFRMVFRVFR
Lowest cloud base at San Juan, lowest cloud base from 2,000 to 5,500, the latest 3,500, in feet.LOWEST CLOUD BASEft2,0003,0004,0005,0006,000Sat 10Sun 11Mon 12Tue 13Wed 14Thu 15Fri 16MVFRVFR
Reports received at San Juan, reports from 0.0 to 1.0, the latest 0.0, in reports.REPORTS RECEIVEDreports00.250.50.751Sat 10Sun 11Mon 12Tue 13Wed 14Thu 15Fri 16
The readings these charts were drawn from, as a table
HourTemperature FDew point FRelative humidity %Wind mphGust mphWind direction °Pressure, altimeter inHgVisibility miLowest cloud base ftPrecipitation inReports
Thu 15, 6 PM84.275.27512-10029.9410.03,5000.001
Thu 15, 5 PM84.277.07912-9029.9310.03,5000.001
Thu 15, 4 PM86.077.07515-8029.9110.03,5000.001
Thu 15, 3 PM87.877.07113-9029.9110.03,5000.001
Thu 15, 2 PM87.877.07114-10029.9110.03,5000.001
Thu 15, 1 PM87.875.26615-8029.9210.03,5000.001
Thu 15, 12 PM87.877.07113-9029.9510.03,5000.001
Thu 15, 11 AM87.877.07112-8029.9810.03,5000.001
Thu 15, 10 AM87.877.07112-10030.0010.03,5000.001
Thu 15, 9 AM86.077.0759-9030.0210.03,0000.001
Thu 15, 8 AM86.077.0756-15030.0010.03,0000.001
Thu 15, 7 AM80.675.2843-15030.0010.03,0000.001
Thu 15, 6 AM80.675.28491613029.9810.03,0000.001
Wed 14, 5 PM84.277.0799-10029.9510.03,0000.001
Wed 14, 4 PM86.077.07513-10029.9410.03,0000.001
Wed 14, 3 PM87.875.26613-10029.9310.03,0000.001
Wed 14, 2 PM87.875.26613-9029.9310.03,0000.001
Wed 14, 1 PM87.875.26615-8029.9410.03,0000.001
Wed 14, 12 PM87.875.26614-9029.9610.03,0000.001
Wed 14, 11 AM87.875.26612-8029.9810.03,0000.001
Wed 14, 10 AM86.075.27012-8030.0010.03,0000.001
Wed 14, 9 AM86.077.0758-9030.0010.03,0000.001
Wed 14, 8 AM86.075.2706-14029.9910.03,0000.001
Wed 14, 7 AM82.475.2793-15029.9710.03,0000.001
Wed 14, 6 AM78.875.289---29.9510.03,0000.001
Tue 13, 5 PM84.277.07912-11029.9210.03,0000.001
Tue 13, 4 PM84.277.0799-10029.9110.03,0000.001
Tue 13, 3 PM86.077.0759-10029.9110.03,5000.001
Tue 13, 2 PM84.277.07910-8029.9110.03,5000.001
Tue 13, 1 PM86.077.0759-7029.9210.02,5000.001
Tue 13, 12 PM84.278.8849-8029.9410.02,5000.001
Tue 13, 11 AM87.878.87512-8029.9610.03,0000.001
Tue 13, 10 AM84.277.07910-10029.9710.02,5000.001
Tue 13, 9 AM84.277.07910-10029.9710.02,5000.001
Tue 13, 8 AM82.477.0846-12029.9610.02,5000.001
Tue 13, 7 AM80.677.0893--29.9510.02,5000.001
Tue 13, 6 AM80.675.2849-9029.9310.02,5000.001
Mon 12, 6 PM84.277.07912-11029.9010.03,0000.001
Mon 12, 5 PM84.277.07913-11029.9010.03,0000.001
Mon 12, 4 PM86.078.87913-10029.9010.03,0000.001
Mon 12, 3 PM84.275.2756-15029.8910.03,0000.001
Mon 12, 2 PM87.877.07114-10029.8910.03,0000.001
Mon 12, 1 PM87.877.07110-9029.9010.02,5000.001
Mon 12, 12 PM87.877.07115-9029.9310.03,0000.001
Mon 12, 11 AM87.877.0719-8029.9510.03,0000.001
Mon 12, 10 AM87.877.07112-10029.9710.03,0000.001
Mon 12, 9 AM84.277.07910-10029.9810.03,0000.001
Mon 12, 8 AM82.475.2793-10029.9710.03,0000.001
Mon 12, 7 AM80.675.2840--29.9610.05,5000.001
Mon 12, 6 AM78.873.4843-13029.9610.03,0000.001
Sun 11, 6 PM84.275.275101711029.9710.03,0000.001
Sun 11, 5 PM84.275.27514-11029.968.03,0000.001
Sun 11, 4 PM86.075.27015-9029.958.03,0000.001
Sun 11, 3 PM86.077.07515-10029.958.03,0000.001
Sun 11, 2 PM82.475.27910-15029.988.02,5000.001
Sun 11, 1 PM80.673.4798-30030.018.02,5000.001
Sun 11, 12 PM86.075.270162311030.0010.03,0000.001
Sun 11, 11 AM86.075.27014-10030.0310.03,0000.001
Sun 11, 10 AM84.275.27510-8030.0610.03,0000.001
Sun 11, 9 AM84.273.4706-13030.0610.03,0000.001
Sun 11, 8 AM80.673.4795-16030.0610.02,5000.001
Sun 11, 7 AM78.871.6795-16030.0510.02,5000.001
Sun 11, 6 AM77.071.6830--30.0110.02,5000.001
Sat 10, 6 PM82.473.47414-11029.9810.03,0000.001
Sat 10, 5 PM84.275.27513-8029.9810.03,5000.001
Sat 10, 4 PM86.073.466152311029.9610.03,5000.001
Sat 10, 3 PM87.875.26613-9029.9510.03,0000.001
Sat 10, 2 PM87.875.26613-9029.9510.03,0000.001
Sat 10, 1 PM87.875.26614-10029.9710.02,5000.001
Sat 10, 12 PM87.875.26612-10029.9910.03,0000.001
Sat 10, 11 AM86.075.27012-10030.0210.03,0000.001
Sat 10, 10 AM84.275.2759-10030.0510.02,5000.001
Sat 10, 9 AM82.475.2795-13030.0510.02,5000.001
Sat 10, 8 AM80.673.4798-3030.047.02,0000.001
Sat 10, 7 AM80.675.2840--30.028.03,0000.001
Sat 10, 6 AM78.873.4840--30.018.03,0000.001
Fri 9, 6 PM84.277.0799-11029.9710.02,5000.001
Fri 9, 5 PM84.275.275131711029.9610.02,5000.001
Fri 9, 4 PM86.075.27013-11029.9610.03,0000.001
Fri 9, 3 PM87.877.07115-10029.9510.03,0000.001
Fri 9, 2 PM87.877.071172410029.9610.03,0000.001
Fri 9, 1 PM87.875.26616-10029.9710.03,0000.001
Fri 9, 12 PM89.675.26315-10029.9910.03,0000.001
Fri 9, 11 AM87.875.26615-10030.0110.03,0000.001
Fri 9, 10 AM87.875.26614-10030.0210.03,0000.001
Fri 9, 9 AM87.875.26614-10030.0410.03,0000.001
Fri 9, 8 AM86.075.27013-10030.0310.03,0000.001
Fri 9, 7 AM82.475.2797-14030.0110.03,0000.001
Fri 9, 6 AM80.673.4790--30.0010.03,0000.001
High and Low at San Juan, high from 86.0 to 91.4, the latest 87.8; low from 77.0 to 84.2, the latest 80.6, in degrees Fahrenheit.HIGH AND LOWF7580859095Sep 17Sep 22Sep 27Oct 2Oct 7Oct 12HIGHLOW
Highest dew point and Lowest dew point at San Juan, highest dew point from 75.2 to 78.8, the latest 77.0; lowest dew point from 69.8 to 75.2, the latest 75.2, in degrees Fahrenheit.HIGHEST DEW POINT AND LOWEST DEW POINTF67.57072.57577.580Sep 17Sep 22Sep 27Oct 2Oct 7Oct 12HIGHEST DEW POINTLOWEST DEW POINT
Highest humidity and Lowest humidity at San Juan, highest humidity from 75 to 94, the latest 84; lowest humidity from 52 to 75, the latest 66, in per cent.HIGHEST HUMIDITY AND LOWEST HUMIDITY%406080100Sep 17Sep 22Sep 27Oct 2Oct 7Oct 12HIGHEST HUMIDITYLOWEST HUMIDITY
Average wind and Strongest gust at San Juan, average wind from 5 to 17, the latest 10; strongest gust from 16 to 25, the latest 16, in miles an hour.AVERAGE WIND AND STRONGEST GUSTmph0102030Sep 17Sep 22Sep 27Oct 2Oct 7Oct 12AVERAGE WINDSTRONGEST GUST
The readings these charts were drawn from, as a table
DayHigh FLow FHighest dew point FLowest dew point FHighest humidity %Lowest humidity %Average wind mphStrongest gust mph
Oct 1587.880.677.075.284661016
Oct 1487.878.877.075.2896611-
Oct 1387.880.678.875.289759-
Oct 1287.878.878.873.484717-
Oct 1186.077.077.071.68370723
Oct 1087.878.875.273.48466723
Oct 989.680.677.073.47963824
Oct 887.880.678.875.284666-
Oct 789.678.875.271.68459518
Oct 687.882.477.075.27966823
Oct 589.678.878.873.484666-
Oct 486.078.875.269.88962521
Oct 387.880.675.273.479636-
Oct 287.878.875.273.484661222
Oct 189.678.877.073.484631225
Sep 3089.684.275.275.27563722
Sep 2989.680.678.873.47966721
Sep 2889.680.678.875.284671020
Sep 2789.680.678.873.489636-
Sep 2689.680.678.873.484636-
Sep 2589.680.677.069.8845210-
Sep 2491.480.678.873.484595-
Sep 2387.880.678.875.28466822
Sep 2287.880.677.075.284665-
Sep 2187.880.677.073.4846617-
Sep 2087.878.878.873.48966820
Sep 1987.880.677.075.28466616
Sep 1889.680.678.875.284669-
Sep 1791.477.077.073.49456825

Station report

San Juan, 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 9 ft above sea level, 0 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 29.91 inHg and the temperature at 59.0 F.

Section from sea level of where San Juan stands in the atmosphere, height to scale: the station 9 feet above sea level with 0 per cent of the air below it; the standard atmosphere's pressure there, 29.91 inches of mercury, and temperature, 59.0 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT TJIGFIG. D WHERE SAN JUAN 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 ATMOSPHERESAN JUAN0 PER CENT OF THE AIR BELOW IT9 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 HERE29.91 inHgSTANDARD TEMPERATURE HERE59.0 FTITLESan Juan, the columnSTATION REPORT · ASOS TJIGTYPESECTIONSCALEHEIGHT TO SCALEREVFROM THE REGISTER SHEET 1 of 3DATE2026-10-16IDSR-TJIG-1DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

From the Field Book

2The sun

Contents

On Oct 16 the noon sun stands 62 degrees above the horizon at 18.46 N, and the day is 11 h 36 min long. Level ground there takes 89 per cent of the noon sunlight a surface facing the sun would.

Elevation of the noon sun at San Juan, angles true: on Oct 16 it stands 62 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 36 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT TJIGFIG. E THE SUN AT SAN JUANELEVATION 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 16, 62°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 11 H 36 MINLEVEL GROUND TAKES 89 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 18.46 N; THE SUN'S DECLINATION -9.1°TITLESan Juan, the sunSTATION REPORT · ASOS TJIGTYPEELEVATIONSCALEANGLES TRUEREVFROM THE REGISTER SHEET 2 of 3DATE2026-10-16IDSR-TJIG-2DRAWN AS linework on paperSOURCES FB-ENG-007

From the Field Book

3The instrument

Contents

An airport station, 9 ft above sea level. Its sensors, as its network builds them.

Elevation of an airport station, San Juan, each sensor drawn and labelled with what it read: no reading in the last day.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT TJIGFIG. F THE INSTRUMENTELEVATION OF AN AIRPORT STATION, EACH SENSOR WITH WHAT IT READBAROMETERS, IN THE SHELTER-HEATED RAIN GAUGE-VISIBILITY SENSOR, 7 FT-BEAMCEILOMETER, LOOKING UP-TEMPERATURE IN ITS SHIELD, 5 FT-WIND, 33 FT-33 FT5 FTHEIGHTS TO SCALE; THE SPACING BETWEEN SENSORS IS NOTTITLESan Juan, the instrumentSTATION REPORT · ASOS TJIGTYPEELEVATIONSCALEPARTLY TO SCALEREVFROM THE REGISTER SHEET 3 of 3DATE2026-10-16IDSR-TJIG-3DRAWN AS linework on paperSOURCES FB-INS-002, FB-INS-001, FB-INS-009

From the Field Book

The instrumentWhat an instrument is FB-INS-001ASOS FB-INS-002Personal weather station FB-INS-003Stevenson screen and siting FB-INS-009

What it seesAtmosphere in section FB-ENG-001Hydrostatic balance FB-ENG-003Lapse rates and stability FB-ENG-005Radiation budget FB-ENG-007Coriolis as geometry FB-ENG-008Water vapour as a gas FB-ENG-011Thunderstorm FB-EVT-001Supercell FB-EVT-007Tornado FB-EVT-009Hurricane FB-EVT-043Nor'easter FB-EVT-066Blizzard FB-EVT-081Ice storm FB-EVT-084Coastal flood FB-EVT-105Heat wave and heat dome FB-EVT-130Fire weather FB-EVT-139High wind FB-EVT-150Cloud classification FB-SKY-001Cirrus FB-SKY-010Cirrocumulus FB-SKY-011Cirrostratus FB-SKY-012Altocumulus FB-SKY-013Altostratus FB-SKY-014Nimbostratus FB-SKY-015Stratocumulus FB-SKY-016Stratus FB-SKY-017Cumulus FB-SKY-018Cumulonimbus FB-SKY-019Species atlas FB-SKY-030Varieties atlas FB-SKY-031Supplementary features atlas FB-SKY-032Accessory clouds FB-SKY-033Special clouds FB-SKY-034Orographic clouds FB-SKY-035Wall cloud FB-SKY-040Cumulonimbus architecture FB-SKY-041Humidity variables FB-WAT-002Fog types FB-WAT-020

What this instrument measures for

It is Fernando Luis Ribas Dominicci Airport's own instrument.

Near San Juan

Gauges

Weather instruments

Fernando Luis Ribas Dominicci AirportThe airport this instrument stands at: its runways and the wind on each now