Storm Station
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At a tide gauge

DCP network, identified by the register

Identifier
NDBC-GDMM5
Latitude
47.74900 N
Longitude
90.34100 W
Elevation
-
Rank
1,923of 1,965 in Minnesota, Oct 16
Observed
10:54 PMCDT, 46 minutes ago
Air temperature
46.8F

Ranking Statistics

On the radar over Grand MaraisReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

At a tide gauge

Drawn as the kind of place it stands at. 2 instruments in Minnesota stand at one.

Station charts

Grand Marais Report

Rank 1,923 of 1,965 in Minnesota, 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 score71.0of 100

Minnesota median
93.3the median score of 1,965 stations
Scoring higher
1,922stations in Minnesota
Sharing its score
2ranks 1,923 to 1,924
Points deducted
29.016.1 reports received, 6.6 arrival, 4.6 continuity, 1.7 forecast check
Counted at the median
Forecast checknot measured at this station; Minnesota median 83.2
Next above
FW9787rank 1,922; ahead on 247 score 71.4 against 71.0
Next below
MN-LK-58rank 1,924; behind on reports received 53.8% against 42.8%

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 3553.918.9 of 35 pointsMinnesota median 96.4181 of 336 scheduled reports received in 7 days
  2. Arrivalweight 1034.43.4 of 10 pointsMinnesota median 96.8half its reports arrived within 43 min
  3. Continuityweight 1053.95.4 of 10 pointsMinnesota median 100.0longest silence 6.5 h, on a schedule of one report every 30 min
  4. Accuracyweight 20100.020.0 of 20 pointsMinnesota median 100.0its temperature against the airport station KGNA, 0.4 miles away, over 200 readings: typical difference 1.2 °F beyond a steady offset of +0.7 °F
  5. Instrument checksweight 15100.015.0 of 15 pointsMinnesota median 100.00 of 200 readings failed their check against its reference station
  6. Forecast checkweight 10-8.3 of 10 points, at the medianMinnesota median 83.2-

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 (1.5 h), none for 72 (36 h)
Accuracy
Full marks within 1.5 °F of its reference, typically, none beyond 8.0 °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
1,923of 1,965 in Minnesota, Oct 16
Schedule
every 30 minon the hour's :00, :30 and :54
Reports received, 24 hours
31 of 4864.5% of its schedule, 33 reports in all
Reports received, 7 days
187 of 33655.6% of its schedule, 212 reports in all
Days reported, 30 days
-
Longest silence, 7 days
6 h 30 minfrom Oct 14, 9:00 AM
Latest report
Oct 16, 3:54 AMlocal time
Time to reach Storm Station
43 min9 in 10 within 53 min
Against its reference, 30 days
+0.7 °Fwarmer than the airport station KGNA, 0.4 miles away, on average over 210 readings; typical difference 1.4 °F

From Storm Station's own record of every report it heard from this station.

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 30 min, 48 in 24 hours. Two reports in the same 30 min count as one received.

Chart of the 1,965 ranked stations in Minnesota 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, 1; 10 to 19 per cent, 6; 20 to 29 per cent, 17; 30 to 39 per cent, 6; 40 to 49 per cent, 122; 50 to 59 per cent, 192; 60 to 69 per cent, 31; 70 to 79 per cent, 329; 80 to 89 per cent, 254; 90 to 99 per cent, 319; 100 per cent, 688. Grand Marais received 53.8 per cent, 181 of 336 scheduled reports, rank 1,923 of 1,965.WHERE IT RANKS IN MINNESOTA, Oct 16THIS ONE: 53.8%, 181 OF 336, RANK 1,923 OF 1,965PER CENT OF SCHEDULED REPORTS RECEIVEDIN STORM STATION'S OWN RECORD, UP TO 7 DAYS1101000 to 9110 to 19620 to 291730 to 39640 to 4912250 to 5919260 to 693170 to 7932980 to 8925490 to 99319100688STATIONS, LOG SCALE
Chart of Grand Marais's rank in Minnesota by how it reported, day by day, from 2026-10-11 to 2026-10-16: 2026-10-11 rank 1,948 of 1,963; 2026-10-12 rank 1,882 of 1,914; 2026-10-13 rank 1,871 of 1,906; 2026-10-14 rank 1,873 of 1,912; 2026-10-15 rank 1,902 of 1,936; 2026-10-16 rank 1,923 of 1,965.ITS RANK IN MINNESOTA, DAY BY DAYRANK, FIRST AT THE TOP15001,0001,5002,000Oct 11Oct 12Oct 13Oct 14Oct 15Oct 16
The ranking these charts were drawn from, as tables
Share of scheduled reports receivedStations
100%688
90 to 99%319
80 to 89%254
70 to 79%329
60 to 69%31
50 to 59%192
40 to 49%122
30 to 39%6
20 to 29%17
10 to 19%6
0 to 9%1
DayRankStations rankedShare received
Oct 16, 20261,9231,96553.8%
Oct 15, 20261,9021,93644.3%
Oct 14, 20261,8731,91238.3%
Oct 13, 20261,8711,90630.6%
Oct 12, 20261,8821,91420.8%
Oct 11, 20261,9481,96311.0%

Station report

Grand Marais, in 2 sheets

Drawn from the register, in the manner of the Field Book, and opened beside the plates that explain each part of it.

1The sun

Contents

On Oct 16 the noon sun stands 33 degrees above the horizon at 47.75 N, and the day is 10 h 39 min long. Level ground there takes 55 per cent of the noon sunlight a surface facing the sun would.

Elevation of the noon sun at Grand Marais, angles true: on Oct 16 it stands 33 degrees above the horizon, against 66 at the June solstice, 42 at the equinoxes and 19 at the December solstice; the day is 10 h 39 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT NDBC-GDMM5FIG. E THE SUN AT GRAND MARAISELEVATION 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 66°EQUINOXES 42°DECEMBER SOLSTICE 19°OCT 16, 33°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 10 H 39 MINLEVEL GROUND TAKES 55 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 47.75 N; THE SUN'S DECLINATION -9.1°TITLEGrand Marais, the sunSTATION REPORT · DCP NDBC-GDMM5TYPEELEVATIONSCALEANGLES TRUEREVFROM THE REGISTER SHEET 1 of 2DATE2026-10-16IDSR-NDBCGDMM5-1DRAWN AS linework on paperSOURCES FB-ENG-007

From the Field Book

2The instrument

Contents

A data collection platform. Its sensors, as its network builds them.

Elevation of a data collection platform, Grand Marais, each sensor drawn and labelled with what it read: no reading in the last day.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT NDBC-GDMM5FIG. F THE INSTRUMENTELEVATION OF A DATA COLLECTION PLATFORM, EACH SENSOR WITH WHAT IT READANTENNA, SENDING BY SATELLITE-AIR TEMPERATURE-PRECIPITATION GAUGE-SCHEMATIC; THE SPACING BETWEEN SENSORS IS NOT TO SCALETITLEGrand Marais, the instrumentSTATION REPORT · DCP NDBC-GDMM5TYPEELEVATIONSCALESCHEMATICREVFROM THE REGISTER SHEET 2 of 2DATE2026-10-16IDSR-NDBCGDMM5-2DRAWN AS linework on paperSOURCES FB-INS-001

From the Field Book

The instrumentWhat an instrument is FB-INS-001

What it seesMoon and tides FB-CLK-003Hurricane FB-EVT-043Nor'easter FB-EVT-066Flash flood FB-EVT-100Coastal flood FB-EVT-105

What this instrument measures for

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

Near Grand Marais

Gauges

Weather instruments

Places