Storm Station
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In a volunteer observer's own ground

CWOP network, identified by the register

Identifier
DW8795
Latitude
39.52000 N
Longitude
76.31000 W
Elevation
242 ft
Rank
711of 736 in Maryland, Oct 16

Ranking Statistics

On the radar over Citizen station DW8795ReflectivityStorm 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. 571 instruments in Maryland stand at one.

Station charts

Citizen station DW8795 Report

Rank 711 of 736 in Maryland, 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 score62.0of 100

Maryland median
89.0the median score of 736 stations
Scoring higher
710stations in Maryland
Sharing its score
1no other station
Points deducted
38.025.6 reports received, 10.0 continuity, 1.6 accuracy, 0.8 forecast check
Counted at the median
Forecast checknot measured at this station; Maryland median 92.1
Next above
TKMM2rank 710; ahead on 247 score 62.1 against 62.0
Next below
GW6292rank 712; behind on 247 score 62.0 against 61.9

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 3526.89.4 of 35 pointsMaryland median 82.145 of 168 scheduled reports received in 7 days
  2. Arrivalweight 10100.010.0 of 10 pointsMaryland median 94.0half its reports arrived within 19 s
  3. Continuityweight 100.00.0 of 10 pointsMaryland median 100.0longest silence 4.3 days, on a schedule of one report every 60 min
  4. Accuracyweight 2091.918.4 of 20 pointsMaryland median 99.0its temperature against the airport station K0W3, 6.6 miles away, over 60 readings: typical difference 2.7 °F beyond a steady offset of -3.0 °F
  5. Instrument checksweight 15100.015.0 of 15 pointsMaryland median 100.00 of 60 readings failed their check against its reference station
  6. Forecast checkweight 10-9.2 of 10 points, at the medianMaryland median 92.1-

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 2.2 °F of its reference, typically, none beyond 8.7 °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
711of 736 in Maryland, Oct 16
Time to reach Storm Station
20 s9 in 10 within 31 s
Against its reference, 30 days
-2.9 °Fcooler than the airport station K0W3, 6.6 miles away, on average over 137 readings; typical difference 4.0 °F; also compared with 1 other reference station

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: 45 of 168 scheduled reports received, 26.7%.

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.

Chart of the 736 ranked stations in Maryland 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, 4; 10 to 19 per cent, 20; 20 to 29 per cent, 27; 30 to 39 per cent, 11; 40 to 49 per cent, 62; 50 to 59 per cent, 96; 60 to 69 per cent, 107; 70 to 79 per cent, 36; 80 to 89 per cent, 35; 90 to 99 per cent, 183; 100 per cent, 155. Citizen station DW8795 received 26.7 per cent, 45 of 168 scheduled reports, rank 711 of 736.WHERE IT RANKS IN MARYLAND, Oct 16THIS ONE: 26.7%, 45 OF 168, RANK 711 OF 736PER CENT OF SCHEDULED REPORTS RECEIVEDIN STORM STATION'S OWN RECORD, UP TO 7 DAYS1101000 to 9410 to 192020 to 292730 to 391140 to 496250 to 599660 to 6910770 to 793680 to 893590 to 99183100155STATIONS, LOG SCALE
Chart of Citizen station DW8795's rank in Maryland by how it reported, day by day, from 2026-10-05 to 2026-10-16: 2026-10-05 rank 575 of 686; 2026-10-06 rank 632 of 702; 2026-10-07 rank 550 of 729; 2026-10-08 rank 533 of 731; 2026-10-09 rank 450 of 733; 2026-10-10 rank 454 of 733; 2026-10-11 rank 561 of 725; 2026-10-12 rank 435 of 728; 2026-10-13 rank 619 of 726; 2026-10-14 rank 673 of 727; 2026-10-15 rank 671 of 723; 2026-10-16 rank 711 of 736.ITS RANK IN MARYLAND, DAY BY DAYRANK, FIRST AT THE TOP1200400600800Oct 5Oct 7Oct 9Oct 11Oct 13Oct 15Oct 16
The ranking these charts were drawn from, as tables
Share of scheduled reports receivedStations
100%155
90 to 99%183
80 to 89%35
70 to 79%36
60 to 69%107
50 to 59%96
40 to 49%62
30 to 39%11
20 to 29%27
10 to 19%20
0 to 9%4
DayRankStations rankedShare received
Oct 16, 202671173626.7%
Oct 15, 202667172335.7%
Oct 14, 202667372740.4%
Oct 13, 202661972657.4%
Oct 12, 202643572864.9%
Oct 11, 202656172557.6%
Oct 10, 202645473362.1%
Oct 9, 202645073362.1%
Oct 8, 202653373158.9%
Oct 7, 202655072958.2%
Oct 6, 202663270239.6%
Oct 5, 202657568650.0%

Station report

Citizen station DW8795, 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 242 ft above sea level, 1 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 29.66 inHg and the temperature at 58.1 F.

Section from sea level of where Citizen station DW8795 stands in the atmosphere, height to scale: the station 242 feet above sea level with 1 per cent of the air below it; the standard atmosphere's pressure there, 29.66 inches of mercury, and temperature, 58.1 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT DW8795FIG. D WHERE CITIZEN STATION DW8795 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 ATMOSPHERECITIZEN STATION DW87951 PER CENT OF THE AIR BELOW IT242 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 HERE29.66 inHgSTANDARD TEMPERATURE HERE58.1 FTITLECitizen station DW8795, the columnSTATION REPORT · CWOP DW8795TYPESECTIONSCALEHEIGHT TO SCALEREVFROM THE REGISTER SHEET 1 of 3DATE2026-10-16IDSR-DW8795-1DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

From the Field Book

2The sun

Contents

On Oct 16 the noon sun stands 41 degrees above the horizon at 39.52 N, and the day is 10 h 59 min long. Level ground there takes 66 per cent of the noon sunlight a surface facing the sun would.

Elevation of the noon sun at Citizen station DW8795, angles true: on Oct 16 it stands 41 degrees above the horizon, against 74 at the June solstice, 50 at the equinoxes and 27 at the December solstice; the day is 10 h 59 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT DW8795FIG. E THE SUN AT CITIZEN STATION DW8795ELEVATION 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 74°EQUINOXES 50°DECEMBER SOLSTICE 27°OCT 16, 41°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 10 H 59 MINLEVEL GROUND TAKES 66 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 39.52 N; THE SUN'S DECLINATION -9.1°TITLECitizen station DW8795, the sunSTATION REPORT · CWOP DW8795TYPEELEVATIONSCALEANGLES TRUEREVFROM THE REGISTER SHEET 2 of 3DATE2026-10-16IDSR-DW8795-2DRAWN AS linework on paperSOURCES FB-ENG-007

From the Field Book

3The instrument

Contents

A weather instrument, 242 ft above sea level. Its sensors, as its network builds them.

Elevation of the instrument, Citizen station DW8795, each sensor drawn and labelled with what it read: no reading in the last day.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT DW8795FIG. F THE INSTRUMENTELEVATION OF THE INSTRUMENT, EACH SENSOR WITH WHAT IT READANTENNA, SENDING BY SATELLITE-AIR TEMPERATURE-PRECIPITATION GAUGE-SCHEMATIC; THE SPACING BETWEEN SENSORS IS NOT TO SCALETITLECitizen station DW8795, the instrumentSTATION REPORT · CWOP DW8795TYPEELEVATIONSCALESCHEMATICREVFROM THE REGISTER SHEET 3 of 3DATE2026-10-16IDSR-DW8795-3DRAWN AS linework on paperSOURCES FB-INS-001

From the Field Book

Near Citizen station DW8795

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