Storm Station
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At a soil climate station

SCAN network, identified by the register

Identifier
S2049
Latitude
39.01670 N
Longitude
76.85000 W
Elevation
105 ft
Rank
734of 736 in Maryland, Oct 16
Observed
11:00 PMEDT, 2 hours ago
Air temperature
-100F
High so far today
-100F
Low so far today
-100F
Relative humidity
94%
Strongest wind today
6mph
Soil temperature, first probe
66F
Soil temperature, second probe
67F
Soil temperature, third probe
67F
Soil moisture, first probe
23%
Soil moisture, second probe
23%
Soil moisture, third probe
15%

Ranking Statistics

On the radar over Powder MillReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

Station charts

Powder Mill Report

Rank 734 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 score55.7of 100

Maryland median
89.0the median score of 736 stations
Scoring higher
733stations in Maryland
Sharing its score
1no other station
Points deducted
44.320.0 accuracy, 15.0 instrument checks, 8.5 arrival, 0.8 forecast check
Counted at the median
Forecast checknot measured at this station; Maryland median 92.1
Next above
MD049rank 733; ahead on 247 score 56.1 against 55.7
Next below
PRLM2rank 735; behind on 247 score 55.7 against 55.4

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 35100.035.0 of 35 pointsMaryland median 82.1168 of 168 scheduled reports received in 7 days
  2. Arrivalweight 1015.01.5 of 10 pointsMaryland median 94.0half its reports arrived within 53 min
  3. Continuityweight 10100.010.0 of 10 pointsMaryland median 100.0longest silence 63 min, on a schedule of one report every 60 min
  4. Accuracyweight 200.00.0 of 20 pointsMaryland median 99.0its temperature against the airport station KADW, 13.5 miles away, over 166 readings: typical difference 30.0 °F beyond a steady offset of -161.5 °F
  5. Instrument checksweight 150.00.0 of 15 pointsMaryland median 100.0162 of 166 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 2.9 °F of its reference, typically, none beyond 9.3 °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
734of 736 in Maryland, Oct 16
Schedule
every houron the hour's :00
Reports received, 24 hours
24 of 24100% of its schedule
Reports received, 7 days
168 of 168100% of its schedule
Days reported, 30 days
29 of 30
Longest silence, 7 days
1 h 32 minfrom Oct 15, 11:00 PM
Latest report
Oct 15, 11:00 PMlocal time
Time to reach Storm Station
53 min9 in 10 within 53 min
Against its reference, 30 days
-158.5 °Fcooler than the airport station KADW, 14 miles away, on average over 372 readings; typical difference 162.5 °F; also compared with 3 other reference stations

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: 168 of 168 scheduled reports received, 100%.

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.

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. Powder Mill received 100.0 per cent, 168 of 168 scheduled reports, rank 734 of 736.WHERE IT RANKS IN MARYLAND, Oct 16THIS ONE: 100.0%, 168 OF 168, RANK 734 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 Powder Mill's rank in Maryland by how it reported, day by day, from 2026-09-28 to 2026-10-16: 2026-09-28 rank 148 of 418; 2026-09-29 rank 141 of 424; 2026-09-30 rank 166 of 424; 2026-10-01 rank 147 of 426; 2026-10-02 rank 513 of 540; 2026-10-03 rank 519 of 540; 2026-10-04 rank 562 of 564; 2026-10-05 rank 682 of 686; 2026-10-06 rank 699 of 702; 2026-10-07 rank 729 of 729; 2026-10-08 rank 730 of 731; 2026-10-09 rank 732 of 733; 2026-10-10 rank 732 of 733; 2026-10-11 rank 720 of 725; 2026-10-12 rank 725 of 728; 2026-10-13 rank 724 of 726; 2026-10-14 rank 727 of 727; 2026-10-15 rank 721 of 723; 2026-10-16 rank 734 of 736.ITS RANK IN MARYLAND, DAY BY DAYRANK, FIRST AT THE TOP1200400600800Sep 28Oct 2Oct 6Oct 10Oct 14Oct 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, 2026734736100.0%
Oct 15, 2026721723100.0%
Oct 14, 202672772799.4%
Oct 13, 202672472699.4%
Oct 12, 202672572899.4%
Oct 11, 202672072599.4%
Oct 10, 202673273395.2%
Oct 9, 202673273395.2%
Oct 8, 202673073194.6%
Oct 7, 202672972994.6%
Oct 6, 202669970294.6%
Oct 5, 202668268694.3%
Oct 4, 202656256493.3%
Oct 3, 202651954098.2%
Oct 2, 202651354098.2%
Oct 1, 202614742698.8%
Sep 30, 202616642498.4%
Sep 29, 2026141424100.0%
Sep 28, 2026148418100.0%
Relative humidity at Powder Mill, relative humidity from 64 to 94, the latest 94, in per cent.RELATIVE HUMIDITY%607080901003 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 16
Wind at Powder Mill, wind from 0 to 6, the latest 0, in miles an hour.WINDmph02463 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 16
Reports received at Powder Mill, 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
HourRelative humidity %Wind mphReports
Thu 15, 11 PM94-1
Thu 15, 10 PM9301
Thu 15, 9 PM9411
Thu 15, 8 PM9311
Thu 15, 7 PM9111
Thu 15, 6 PM8211
Thu 15, 5 PM7111
Thu 15, 4 PM7131
Thu 15, 3 PM6631
Thu 15, 2 PM6541
Thu 15, 1 PM6541
Thu 15, 12 PM6741
Thu 15, 11 AM6451
Thu 15, 10 AM6651
Thu 15, 9 AM7051
Thu 15, 8 AM7051
Thu 15, 7 AM7361
Thu 15, 6 AM7541
Thu 15, 5 AM7561
Thu 15, 4 AM7541
Thu 15, 3 AM8531
Thu 15, 2 AM8331
Thu 15, 1 AM8121
Temperature and Dew point at Powder Mill, temperature from 23.4 to 51.1, the latest 37.2; dew point from -99.9 to 48.8, the latest -99.9, in degrees Fahrenheit.TEMPERATURE AND DEW POINTF-100-50050100Sat 10Sun 11Mon 12Tue 13Wed 14Thu 15Fri 16FREEZINGTEMPERATUREDEW POINT
Relative humidity at Powder Mill, relative humidity from 27 to 99, the latest 94, in per cent.RELATIVE HUMIDITY%20406080100Sat 10Sun 11Mon 12Tue 13Wed 14Thu 15Fri 16
Wind at Powder Mill, wind from 0 to 7, the latest 0, in miles an hour.WINDmph02468Sat 10Sun 11Mon 12Tue 13Wed 14Thu 15Fri 16
Reports received at Powder Mill, 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 mphReports
Thu 15, 11 PM--94-1
Thu 15, 10 PM--9301
Thu 15, 9 PM--9411
Thu 15, 8 PM--9311
Thu 15, 7 PM--9111
Thu 15, 6 PM--8211
Thu 15, 5 PM--7111
Thu 15, 4 PM--7131
Thu 15, 3 PM--6631
Thu 15, 2 PM--6541
Thu 15, 1 PM--6541
Thu 15, 12 PM--6741
Thu 15, 11 AM--6451
Thu 15, 10 AM--6651
Thu 15, 9 AM--7051
Thu 15, 8 AM--7051
Thu 15, 7 AM--7361
Thu 15, 6 AM--7541
Thu 15, 5 AM--7561
Thu 15, 4 AM--7541
Thu 15, 3 AM--8531
Thu 15, 2 AM--8331
Thu 15, 1 AM--8121
Thu 15, 12 AM--8411
Wed 14, 11 PM--99.99501
Wed 14, 10 PM--99.99501
Wed 14, 9 PM--9311
Wed 14, 8 PM--9001
Wed 14, 7 PM--8601
Wed 14, 6 PM--8001
Wed 14, 5 PM--5411
Wed 14, 4 PM--5021
Wed 14, 3 PM--4841
Wed 14, 2 PM--5031
Wed 14, 1 PM--4731
Wed 14, 12 PM--5651
Wed 14, 11 AM--5631
Wed 14, 10 AM--6731
Wed 14, 9 AM--8421
Wed 14, 8 AM--99.49901
Wed 14, 7 AM--99.49901
Wed 14, 6 AM--99.69801
Wed 14, 5 AM--99.69801
Wed 14, 4 AM--99.69801
Wed 14, 3 AM--99.69801
Wed 14, 2 AM--99.79701
Wed 14, 1 AM--9401
Wed 14, 12 AM--8511
Tue 13, 11 PM--7311
Tue 13, 10 PM--7911
Tue 13, 9 PM--8901
Tue 13, 8 PM--8801
Tue 13, 7 PM--7901
Tue 13, 6 PM--5911
Tue 13, 5 PM--4931
Tue 13, 4 PM--4641
Tue 13, 3 PM--4151
Tue 13, 2 PM--4451
Tue 13, 1 PM--5141
Tue 13, 12 PM--5431
Tue 13, 11 AM--6131
Tue 13, 10 AM--7311
Tue 13, 9 AM--9301
Tue 13, 8 AM--99.49901
Tue 13, 7 AM--99.49901
Tue 13, 6 AM--99.49901
Tue 13, 5 AM--99.49901
Tue 13, 4 AM--99.49901
Tue 13, 3 AM--99.49901
Tue 13, 2 AM--99.49901
Tue 13, 1 AM--99.49901
Tue 13, 12 AM--99.49901
Mon 12, 11 PM--99.49901
Mon 12, 10 PM--99.69801
Mon 12, 9 PM--99.69801
Mon 12, 8 PM--99.79701
Mon 12, 7 PM--9201
Mon 12, 6 PM--7501
Mon 12, 5 PM--6141
Mon 12, 4 PM--6261
Mon 12, 3 PM--6171
Mon 12, 2 PM--6561
Mon 12, 1 PM--6361
Mon 12, 12 PM--6971
Mon 12, 11 AM--7771
Mon 12, 10 AM--8361
Mon 12, 9 AM--8941
Mon 12, 8 AM--9231
Mon 12, 7 AM--99.99531
Mon 12, 6 AM--9421
Mon 12, 5 AM--99.99531
Mon 12, 4 AM--99.89651
Mon 12, 3 AM--99.99531
Mon 12, 2 AM--99.89651
Mon 12, 1 AM--99.89651
Mon 12, 12 AM--99.69841
Sun 11, 11 PM--99.69841
Sun 11, 10 PM--99.79741
Sun 11, 9 PM--99.69851
Sun 11, 8 PM--99.69851
Sun 11, 7 PM--99.79741
Sun 11, 6 PM--99.79731
Sun 11, 5 PM--99.69831
Sun 11, 4 PM--99.79731
Sun 11, 3 PM--99.79741
Sun 11, 2 PM--99.79741
Sun 11, 1 PM--99.79741
Sun 11, 12 PM--99.79751
Sun 11, 11 AM--99.79751
Sun 11, 10 AM--99.89661
Sun 11, 9 AM--99.89671
Sun 11, 8 AM--99.89671
Sun 11, 7 AM--99.89671
Sun 11, 6 AM--99.99571
Sun 11, 5 AM--9051
Sun 11, 4 AM--7861
Sun 11, 3 AM--8541
Sun 11, 2 AM--8841
Sun 11, 1 AM--8831
Sun 11, 12 AM--8231
Sat 10, 11 PM--8231
Sat 10, 10 PM--7621
Sat 10, 9 PM--7121
Sat 10, 8 PM--7611
Sat 10, 7 PM--6111
Sat 10, 6 PM--5831
Sat 10, 5 PM--6131
Sat 10, 4 PM--5821
Sat 10, 3 PM--5531
Sat 10, 2 PM--5241
Sat 10, 1 PM--5041
Sat 10, 12 PM--6051
Sat 10, 11 AM--7041
Sat 10, 10 AM--7731
Sat 10, 9 AM--99.69811
Sat 10, 8 AM--99.69801
Sat 10, 7 AM--99.49901
Sat 10, 6 AM--99.69801
Sat 10, 5 AM--99.49901
Sat 10, 4 AM--99.69801
Sat 10, 3 AM--99.69801
Sat 10, 2 AM--99.69801
Sat 10, 1 AM--99.69801
Sat 10, 12 AM--99.79701
Fri 9, 11 PM--99.89601
Fri 9, 10 PM--99.89601
Fri 9, 9 PM--9401
Fri 9, 8 PM--9001
Fri 9, 7 PM--8001
Fri 9, 6 PM--6301
Fri 9, 5 PM--4711
Fri 9, 4 PM--2731
Fri 9, 3 PM--2831
Fri 9, 2 PM--2941
Fri 9, 1 PM--3441
Fri 9, 12 PM--4341
Fri 9, 11 AM--5821
Fri 9, 10 AM37.232.58311
Fri 9, 9 AM51.148.89201
Fri 9, 8 AM43.743.29801
Fri 9, 7 AM43.242.79801
Fri 9, 6 AM43.342.89801
Fri 9, 5 AM23.422.99801
Fri 9, 4 AM--99.69801
Fri 9, 3 AM--99.69801
Fri 9, 2 AM--99.79701
Fri 9, 1 AM--99.79701
High and Low at Powder Mill, high from -100.0 to 51.1, the latest -100.0; low from -100.0 to -100.0, the latest -100.0, in degrees Fahrenheit.HIGH AND LOWF-100-50050100Sep 17Sep 22Sep 27Oct 2Oct 7Oct 12FREEZINGHIGHLOW
Highest dew point and Lowest dew point at Powder Mill, highest dew point from -99.9 to 48.8, the latest -99.4; lowest dew point from -99.9 to -99.4, the latest -99.9, in degrees Fahrenheit.HIGHEST DEW POINT AND LOWEST DEW POINTF-100-50050Sep 17Sep 22Sep 27Oct 2Oct 7Oct 12HIGHEST DEW POINTLOWEST DEW POINT
Highest humidity and Lowest humidity at Powder Mill, highest humidity from 93 to 99, the latest 94; lowest humidity from 27 to 93, the latest 64, in per cent.HIGHEST HUMIDITY AND LOWEST HUMIDITY%20406080100Sep 17Sep 22Sep 27Oct 2Oct 7Oct 12HIGHEST HUMIDITYLOWEST HUMIDITY
Strongest gust at Powder Mill, strongest gust from 9 to 27, the latest 14, in miles an hour.STRONGEST GUSTmph51015202530Sep 17Sep 22Sep 27Oct 2Oct 7Oct 12
The readings these charts were drawn from, as a table
DayHigh FLow FHighest dew point FLowest dew point FHighest humidity %Lowest humidity %Strongest gust mph
Oct 15-100.0-100.0--946414
Oct 14-100.0-100.0-99.4-99.9994714
Oct 13-100.0-100.0-99.4-99.4994114
Oct 12-100.0-100.0-99.4-99.9996116
Oct 11-100.0-100.0-99.6-99.9987816
Oct 10-100.0-100.0-99.4-99.7995012
Oct 951.1-100.048.8-99.9982711
Oct 8-100.0-100.0-99.4-99.9992819
Oct 750.5-100.046.5-99.8984813
Oct 641.7-100.041.2-99.8983013
Oct 5-100.0-100.0-99.4-99.6993718
Oct 4-100.0-100.0-99.6-99.9989211
Oct 3-100.0-100.0-99.6-99.9986911
Oct 2-100.0-100.0-99.4-99.8994715
Oct 1-100.0-100.0-99.4-99.899449
Sep 30-100.0-100.0-99.4-99.8994611
Sep 29-100.0-100.0-99.6-99.998649
Sep 28-100.0-100.0-99.9-99.9957112
Sep 27-100.0-100.0--936518
Sep 26-100.0-100.0--935227
Sep 25-100.0-100.0-99.6-99.7983019
Sep 24-100.0-100.0-99.6-99.8984918
Sep 23-100.0-100.0-99.8-99.9966317
Sep 22-100.0-100.0-99.7-99.9979316
Sep 21-100.0-100.0-99.7-99.9976914
Sep 20-100.0-100.0-99.9-99.9956215
Sep 19-100.0-100.0-99.6-99.6985711
Sep 18-100.0-100.0-99.4-99.7995314
Sep 17-100.0-100.0-99.6-99.8985319

Station report

Powder Mill, in 3 sheets

Drawn from its report of Oct 15, 2026, 11:00 PM local time, in the manner of the Field Book, and opened beside the plates that explain each part of it.

1The column

Contents

At 105 ft above sea level, 0 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 29.81 inHg and the temperature at 58.6 F.

Section from sea level of where Powder Mill stands in the atmosphere, height to scale: the station 105 feet above sea level with 0 per cent of the air below it; the standard atmosphere's pressure there, 29.81 inches of mercury, and temperature, 58.6 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT S2049FIG. D WHERE POWDER MILL 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 ATMOSPHEREPOWDER MILL0 PER CENT OF THE AIR BELOW IT105 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 HERE29.81 inHgSTANDARD TEMPERATURE HERE58.6 FTITLEPowder Mill, the columnSTATION REPORT · SCAN S2049TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 3DATE2026-10-16IDSR-S2049-1DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

From the Field Book

2The sun

Contents

On Oct 16 the noon sun stands 42 degrees above the horizon at 39.02 N, and the day is 11 h 01 min long. Level ground there takes 67 per cent of the noon sunlight a surface facing the sun would.

Elevation of the noon sun at Powder Mill, angles true: on Oct 16 it stands 42 degrees above the horizon, against 74 at the June solstice, 51 at the equinoxes and 28 at the December solstice; the day is 11 h 01 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT S2049FIG. E THE SUN AT POWDER MILLELEVATION 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 51°DECEMBER SOLSTICE 28°OCT 16, 42°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 11 H 01 MINLEVEL GROUND TAKES 67 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 39.02 N; THE SUN'S DECLINATION -9.1°TITLEPowder Mill, the sunSTATION REPORT · SCAN S2049TYPEELEVATIONSCALEANGLES TRUEREVAS REPORTED SHEET 2 of 3DATE2026-10-16IDSR-S2049-2DRAWN AS linework on paperSOURCES FB-ENG-007

From the Field Book

3The instrument

Contents

A weather instrument, 105 ft above sea level. Its report of Oct 15, 2026, 11:00 PM local time is written on the sensors that made it.

Elevation of the instrument, Powder Mill, each sensor drawn and labelled with what it read: antenna, sending by satellite, last heard oct 15, 2026, 11:00 pm local time.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT S2049FIG. F THE INSTRUMENTELEVATION OF THE INSTRUMENT, EACH SENSOR WITH WHAT IT READ, OCT 15, 2026, 11:00 PM LOCAL TIMEANTENNA, SENDING BY SATELLITELAST HEARD OCT 15, 2026, 11:00 PM LOCAL TIMEAIR TEMPERATURE-PRECIPITATION GAUGE-SCHEMATIC; THE SPACING BETWEEN SENSORS IS NOT TO SCALETITLEPowder Mill, the instrumentSTATION REPORT · SCAN S2049TYPEELEVATIONSCALESCHEMATICREVAS REPORTED SHEET 3 of 3DATE2026-10-16IDSR-S2049-3DRAWN AS linework on paperSOURCES FB-INS-001

From the Field Book

What this instrument measures for

6 places read it as one of the nearest to it.

Near Powder Mill

Gauges

Weather instruments

Places