Durham 2 SSW

At a climate reference station in Strafford County, New Hampshire

At a climate reference station

USCRN network, identified by the register

Identifier: 54795
Latitude: 43.10000 N
Longitude: 70.94000 W
Elevation: 63 ft
Rank: 207of 385 in New Hampshire, Oct 16
Observed: 5:00 AMEDT, 2 hours ago
Air temperature: 41.5F
What it feels like: 41.5F
High so far today: 41.5F
Low so far today: 38.8F
Dew point: 39.4F
Relative humidity: 92%
Wind: 0mph
Strongest wind today: 2mph
Precipitation today: 0in
Ground surface temperature: 42.1F

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Durham 2 SSW Report

Rank 207 of 385 in New Hampshire, 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 score90.1of 100

New Hampshire median: 92.0the median score of 385 stations
Scoring higher: 205stations in New Hampshire
Sharing its score: 2ranks 206 to 207
Points deducted: 9.97.3 arrival, 2.4 forecast check, 0.2 accuracy
Counted at the median: Accuracy, instrument checks, forecast checknot measured at this station; New Hampshire median 98.9, 100.0, 76.1
Next above: 54794rank 206; ahead on median arrival 90 min 51 s against 90 min 52 s
Next below: NH-HL-48rank 208; behind on 247 score 90.1 against 89.6

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.

Reports receivedweight 35100.035.0 of 35 pointsNew Hampshire median 94.384 of 84 scheduled reports received in 7 days
Arrivalweight 1027.02.7 of 10 pointsNew Hampshire median 100.0half its reports arrived within 1.5 h
Continuityweight 10100.010.0 of 10 pointsNew Hampshire median 100.0longest silence 3.1 h, on a schedule of one report every 2 h
Accuracyweight 20-19.8 of 20 points, at the medianNew Hampshire median 98.9-
Instrument checksweight 15-15.0 of 15 points, at the medianNew Hampshire median 100.0-
Forecast checkweight 10-7.6 of 10 points, at the medianNew Hampshire median 76.1-

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 12 min, none at 2 h
Continuity: Full marks for a longest silence of 3 reports or less (6 h), none for 72 (144 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: 207of 385 in New Hampshire, Oct 16
Days reported, 30 days: 30 of 30
Time to reach Storm Station: 1 h 31 min9 in 10 within 1 h 33 min

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: 84 of 84 scheduled reports received, 100%.

The ranking these charts were drawn from, as tables

Share of scheduled reports received	Stations
100%	114
90 to 99%	82
80 to 89%	31
70 to 79%	16
60 to 69%	12
50 to 59%	82
40 to 49%	28
30 to 39%	1
20 to 29%	14
10 to 19%	1
0 to 9%	4

Day	Rank	Stations ranked	Share received
Oct 16, 2026	207	385	100.0%
Oct 15, 2026	213	388	100.0%
Oct 14, 2026	211	383	100.0%
Oct 13, 2026	223	404	100.0%
Oct 12, 2026	215	401	100.0%
Oct 11, 2026	204	403	98.8%
Oct 10, 2026	205	406	98.8%
Oct 9, 2026	202	406	98.8%
Oct 8, 2026	198	400	98.8%
Oct 7, 2026	200	398	98.8%
Oct 6, 2026	201	401	98.8%
Oct 5, 2026	188	388	100.0%
Oct 4, 2026	200	292	100.0%
Oct 3, 2026	210	285	100.0%
Oct 2, 2026	210	285	100.0%
Oct 1, 2026	81	197	100.0%
Sep 30, 2026	95	194	100.0%
Sep 29, 2026	102	193	100.0%

30 days

The readings these charts were drawn from, as a table

Day	High F	Low F	Highest dew point F	Lowest dew point F	Highest humidity %	Lowest humidity %	Precipitation in
Oct 16	41.5	38.8	39.7	36.9	93	92	0.00
Oct 15	60.3	38.8	47.2	30.0	92	32	0.00
Oct 14	70.3	45.3	63.1	43.4	94	70	0.19
Oct 13	57.6	44.6	54.0	42.4	93	82	0.57
Oct 12	69.3	47.3	56.1	45.1	94	59	0.21
Oct 11	56.3	33.8	47.9	32.0	93	60	0.51
Oct 10	58.1	36.9	41.1	26.5	91	31	0.00
Oct 9	66.0	38.3	47.9	33.6	93	32	0.00
Oct 8	69.6	43.9	55.3	40.3	93	36	0.06
Oct 7	64.4	30.4	40.8	27.6	92	29	0.00
Oct 6	59.4	38.8	34.8	24.9	74	29	0.00
Oct 5	68.7	47.1	52.1	29.5	94	29	0.00
Oct 4	63.3	39.6	50.3	38.1	95	56	0.00
Oct 3	69.4	44.6	54.7	40.5	93	38	0.00
Oct 2	83.8	62.8	69.9	53.4	92	52	0.00
Oct 1	74.8	55.2	63.5	53.5	94	63	0.00
Sep 30	66.9	56.7	60.0	54.9	95	73	0.06
Sep 29	64.8	54.9	59.3	52.3	93	74	0.11
Sep 28	56.5	54.9	53.9	52.3	92	90	1.26
Sep 27	57.9	55.0	55.1	52.5	91	89	0.91
Sep 26	66.6	56.8	53.8	43.2	89	43	0.23
Sep 25	67.8	39.0	51.8	37.4	94	43	0.00
Sep 24	66.4	39.7	48.0	35.0	94	33	0.00
Sep 23	63.3	39.9	47.9	38.3	94	48	0.00
Sep 22	64.4	42.8	46.7	37.6	93	41	0.00
Sep 21	67.1	49.3	52.5	42.8	93	44	0.00
Sep 20	59.4	37.2	54.4	35.6	94	70	0.27
Sep 19	64.0	41.0	48.5	36.6	94	38	0.00
Sep 18	76.1	52.9	65.6	46.1	94	41	0.00
Sep 17	74.7	58.3	63.8	56.3	94	62	0.66

Station report

Durham 2 SSW, in 5 sheets

Drawn from its report of Oct 16, 2026, 5:00 AM local time, in the manner of the Field Book, and opened beside the plates that explain each part of it.

1The air

Contents

41.5 F with a dew point of 39.4 F, 92 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 500 ft up.

From the Field Book

FB-WAT-020, Fig. AFog types
The temperature within 2.2 F of the dew point: the air is close to fog.
FB-WAT-002, Fig. CHumidity variables
The same lift, worked for another air: how the humidity climbs as the air rises and cools.
FB-ENG-011, Fig. AWater vapour as a gas
How much vapour air can hold at each temperature, which sets the dew point.
FB-ENG-005, Fig. ALapse rates and stability
The dry rate the lifted air cools at, against the air around it.

2The wind

Contents

Calm.

From the Field Book

FB-EVT-150, Fig. AHigh wind
How a high wind reaches the ground, and the strengths a warning is issued at (40 mph sustained, 58 mph gusts).
FB-ENG-008, Fig. ACoriolis as geometry
Why large scale winds turn, and blow round a low rather than into it.

3The column

Contents

At 63 ft above sea level, 0 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 29.85 inHg and the temperature at 58.8 F; it reports 41.5 F, 17.2 F colder than standard.

From the Field Book

FB-ENG-001, Fig. AAtmosphere in section
The whole standard atmosphere this station stands in, from the ground to the edge of space.
FB-ENG-003, Fig. CHydrostatic balance
Why a barometer 63 ft up reads less: it weighs only the air above it.

4The sun

Contents

On Oct 16 the noon sun stands 38 degrees above the horizon at 43.10 N, and the day is 10 h 51 min long. Level ground there takes 61 per cent of the noon sunlight a surface facing the sun would.

From the Field Book

FB-ENG-007, Fig. ARadiation budget
Where the sunlight that reaches this ground goes once it arrives.

5The instrument

Contents

A weather instrument, 63 ft above sea level. Its report of Oct 16, 2026, 5:00 AM local time is written on the sensors that made it.

From the Field Book

FB-INS-001, Fig. AWhat an instrument is
A surface station taken apart: what each of these sensors is.

Durham 2 SSW

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Durham 2 SSW Report

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Durham 2 SSW, in 5 sheets

1The air

From the Field Book

2The wind

From the Field Book

3The column

From the Field Book

4The sun

From the Field Book

5The instrument

From the Field Book

What this instrument measures for

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