I90 - Sheridan / Johnson County Line

Beside a road in Sheridan County, Wyoming

Beside a road

RWIS network, identified by the register

Identifier: WY54
Latitude: 44.56690 N
Longitude: 106.81455 W
Elevation: 4,698 ft
Rank: 826of 966 in Wyoming, Oct 17
Observed: 6:02 AMMDT, 34 minutes ago
Air temperature: 60.8F
What it feels like: 60.8F
High so far today: 60.8F
Low so far today: 55.4F
Dew point: -0.9F
Relative humidity: 8%
Visibility: 1.2mi
Wind: 4mph
Gust: 10mph
Strongest wind today: 7mph
Wind direction: 192°

On the radar over I90 - Sheridan / Johnson County LineReflectivity Storm tops Rain rate Rain, last 24 hours Forecast temperature Forecast rain total Every picture

Beside a road

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Station charts

I90 - Sheridan / Johnson County Line Report

Rank 826 of 966 in Wyoming, Oct 17. 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 score82.3of 100

Wyoming median: 92.1the median score of 966 stations
Scoring higher: 825stations in Wyoming
Sharing its score: 2ranks 826 to 827
Points deducted: 17.79.7 reports received, 4.6 continuity, 2.7 forecast check, 0.6 arrival
Counted at the median: Forecast checknot measured at this station; Wyoming median 72.7
Next above: GRCW4rank 825; ahead on 247 score 82.6 against 82.3
Next below: DW3219rank 827; behind on reports received 72.2% against 64.2%

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 3572.225.3 of 35 pointsWyoming median 98.8728 of 1,008 scheduled reports received in 7 days
Arrivalweight 1094.19.4 of 10 pointsWyoming median 80.0half its reports arrived within 13 min
Continuityweight 1053.95.4 of 10 pointsWyoming median 100.0longest silence 2.2 h, on a schedule of one report every 10 min
Accuracyweight 20100.020.0 of 20 pointsWyoming median 97.3its temperature against the airport station KBYG, 13.7 miles away, over 690 readings: typical difference 2.1 °F beyond a steady offset of +0.3 °F
Instrument checksweight 15100.015.0 of 15 pointsWyoming median 100.00 of 690 readings failed their check against its reference station
Forecast checkweight 10-7.3 of 10 points, at the medianWyoming median 72.7-

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 (30 min), none for 72 (12 h)
Accuracy: Full marks within 2.9 °F of its reference, typically, none beyond 9.4 °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: 826of 966 in Wyoming, Oct 17
Schedule: every 10 min
Reports received, 24 hours: 107 of 14474.3% of its schedule, 129 reports in all
Reports received, 7 days: 743 of 1,00873.7% of its schedule, 929 reports in all
Days reported, 30 days: 30 of 30
Longest silence, 7 days: 40 minfrom Oct 15, 10:52 AM
Latest report: Oct 17, 6:22 AMlocal time
Time to reach Storm Station: 13 min9 in 10 within 19 min
Against its reference, 30 days: +1.3 °Fwarmer than the airport station KBYG, 14 miles away, on average over 1,446 readings; typical difference 3.6 °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 10 min, 144 in 24 hours. Two reports in the same 10 min count as one received.

The ranking these charts were drawn from, as tables

Share of scheduled reports received	Stations
100%	275
90 to 99%	424
80 to 89%	89
70 to 79%	57
60 to 69%	9
50 to 59%	53
40 to 49%	45
30 to 39%	6
20 to 29%	2
10 to 19%	5
0 to 9%	1

Day	Rank	Stations ranked	Share received
Oct 17, 2026	826	966	72.2%
Oct 16, 2026	805	971	71.9%
Oct 15, 2026	779	971	72.5%
Oct 14, 2026	782	959	72.1%
Oct 13, 2026	777	951	72.8%
Oct 12, 2026	803	955	72.9%
Oct 11, 2026	798	951	72.7%
Oct 10, 2026	749	951	72.7%
Oct 9, 2026	750	951	72.5%
Oct 8, 2026	861	950	64.3%
Oct 7, 2026	768	947	78.6%
Oct 6, 2026	701	946	82.6%
Oct 5, 2026	553	939	93.6%
Oct 4, 2026	562	910	93.4%
Oct 3, 2026	510	890	94.6%
Oct 2, 2026	510	890	94.5%
Oct 1, 2026	558	705	90.6%
Sep 30, 2026	601	698	93.5%
Sep 29, 2026	537	692	91.1%
Sep 28, 2026	511	679	95.7%
Sep 27, 2026	462	624	96.4%
Sep 26, 2026	424	619	97.1%

24 hours7 days30 days

The readings these charts were drawn from, as a table

Hour	Temperature F	Dew point F	Relative humidity %	Wind mph	Gust mph	Wind direction °	Visibility mi	Reports
Sat 17, 6 AM	60.8	-0.9	8	4	10	192	1.2	1
Sat 17, 5 AM	59.6	-1.2	8	3	11	251	1.2	9
Sat 17, 4 AM	58.5	-0.3	9	2	9	351	1.2	12
Sat 17, 3 AM	57.3	1.2	10	3	11	212	1.2	12
Sat 17, 2 AM	57.0	1.2	10	3	11	226	1.2	12
Sat 17, 1 AM	59.1	0.9	9	3	9	182	1.2	12
Sat 17, 12 AM	57.9	1.9	10	3	12	255	1.2	12
Fri 16, 11 PM	57.9	1.5	10	9	14	208	1.2	12
Fri 16, 10 PM	58.7	3.7	11	12	17	203	1.2	12
Fri 16, 9 PM	57.5	6.6	13	11	16	196	1.2	12
Fri 16, 8 PM	56.6	11.3	16	9	14	187	1.2	12
Fri 16, 7 PM	57.0	18.2	22	8	14	185	1.2	12
Fri 16, 6 PM	57.8	21.0	24	9	12	183	1.2	12
Fri 16, 5 PM	64.8	24.5	22	7	12	169	1.2	12
Fri 16, 4 PM	66.2	22.2	19	9	16	136	1.2	12
Fri 16, 3 PM	65.7	21.4	18	11	17	141	1.2	12
Fri 16, 2 PM	64.7	18.7	17	12	20	130	1.2	12
Fri 16, 1 PM	63.0	20.7	20	12	20	137	1.2	12
Fri 16, 12 PM	58.1	19.5	22	14	22	124	1.2	12
Fri 16, 11 AM	53.4	21.8	29	16	25	135	1.2	12
Fri 16, 10 AM	45.2	24.7	44	19	25	141	1.2	12
Fri 16, 9 AM	39.0	26.0	60	15	22	151	1.2	12
Fri 16, 8 AM	33.2	24.1	69	11	19	161	1.2	12
Fri 16, 7 AM	30.9	20.8	66	14	22	142	1.2	12

Left out: the temperature, which read 42.799988 F in 38 reports in a row from Oct 10, 2026; the temperature, which read 40.99999 F in 91 reports in a row from Oct 11, 2026; the temperature, which read 42.799988 F in 44 reports in a row from Oct 11, 2026; the temperature, which read 44.59999 F in 25 reports in a row from Oct 11, 2026; the temperature, which read 42.799988 F in 100 reports in a row from Oct 11, 2026; the temperature, which read 31.999989 F in 54 reports in a row from Oct 12, 2026; the temperature, which read 37.39999 F in 26 reports in a row from Oct 12, 2026; the temperature, which read 39.19999 F in 69 reports in a row from Oct 12, 2026; the temperature, which read 35.59999 F in 53 reports in a row from Oct 12, 2026; the temperature, which read 37.39999 F in 64 reports in a row from Oct 13, 2026; the temperature, which read 37.39999 F in 29 reports in a row from Oct 13, 2026; the temperature, which read 46.39999 F in 26 reports in a row from Oct 13, 2026, the mark of a sensor that has stuck.

The readings these charts were drawn from, as a table

Hour	Temperature F	Dew point F	Relative humidity %	Wind mph	Gust mph	Wind direction °	Visibility mi	Reports
Sat 17, 6 AM	60.8	-0.9	8	4	10	192	1.2	1
Sat 17, 5 AM	59.6	-1.2	8	3	11	251	1.2	9
Sat 17, 4 AM	58.5	-0.3	9	2	9	351	1.2	12
Sat 17, 3 AM	57.3	1.2	10	3	11	212	1.2	12
Sat 17, 2 AM	57.0	1.2	10	3	11	226	1.2	12
Sat 17, 1 AM	59.1	0.9	9	3	9	182	1.2	12
Sat 17, 12 AM	57.9	1.9	10	3	12	255	1.2	12
Fri 16, 11 PM	57.9	1.5	10	9	14	208	1.2	12
Fri 16, 10 PM	58.7	3.7	11	12	17	203	1.2	12
Fri 16, 9 PM	57.5	6.6	13	11	16	196	1.2	12
Fri 16, 8 PM	56.6	11.3	16	9	14	187	1.2	12
Fri 16, 7 PM	57.0	18.2	22	8	14	185	1.2	12
Fri 16, 6 PM	57.8	21.0	24	9	12	183	1.2	12
Fri 16, 5 PM	64.8	24.5	22	7	12	169	1.2	12
Fri 16, 4 PM	66.2	22.2	19	9	16	136	1.2	12
Fri 16, 3 PM	65.7	21.4	18	11	17	141	1.2	12
Fri 16, 2 PM	64.7	18.7	17	12	20	130	1.2	12
Fri 16, 1 PM	63.0	20.7	20	12	20	137	1.2	12
Fri 16, 12 PM	58.1	19.5	22	14	22	124	1.2	12
Fri 16, 11 AM	53.4	21.8	29	16	25	135	1.2	12
Fri 16, 10 AM	45.2	24.7	44	19	25	141	1.2	12
Fri 16, 9 AM	39.0	26.0	60	15	22	151	1.2	12
Fri 16, 8 AM	33.2	24.1	69	11	19	161	1.2	12
Fri 16, 7 AM	30.9	20.8	66	14	22	142	1.2	12
Fri 16, 6 AM	30.6	21.0	67	17	22	160	1.2	12
Fri 16, 5 AM	30.8	22.0	70	14	19	151	1.2	12
Fri 16, 4 AM	32.3	19.0	58	14	21	155	1.2	12
Fri 16, 3 AM	31.8	18.9	58	9	17	176	1.2	12
Fri 16, 2 AM	31.7	19.3	60	10	14	144	1.2	12
Fri 16, 1 AM	32.3	19.3	58	6	11	174	1.2	12
Fri 16, 12 AM	32.9	20.6	60	3	12	173	1.2	12
Thu 15, 11 PM	34.2	20.5	57	10	17	276	1.2	12
Thu 15, 10 PM	34.7	20.1	55	10	19	280	1.2	12
Thu 15, 9 PM	37.0	20.9	51	14	22	277	1.2	12
Thu 15, 8 PM	-	21.0	51	16	24	288	1.2	12
Thu 15, 7 PM	39.2	22.0	53	14	22	295	1.2	12
Thu 15, 6 PM	41.4	22.0	46	18	36	294	1.2	12
Thu 15, 5 PM	45.8	23.5	41	29	42	311	1.2	12
Thu 15, 4 PM	48.2	26.1	42	32	44	307	1.2	12
Thu 15, 3 PM	49.8	26.4	40	35	50	315	1.2	12
Thu 15, 2 PM	49.4	26.1	40	36	50	312	1.2	12
Thu 15, 1 PM	48.2	24.9	40	35	50	290	1.2	12
Thu 15, 12 PM	47.7	24.2	39	32	50	313	1.2	11
Thu 15, 11 AM	47.4	24.8	41	30	44	297	1.2	12
Thu 15, 10 AM	44.8	27.2	50	26	39	298	1.2	12
Thu 15, 9 AM	-	29.9	60	18	31	293	1.2	12
Thu 15, 8 AM	-	31.7	65	19	30	300	1.2	12
Thu 15, 7 AM	-	33.3	69	21	34	300	1.2	12
Thu 15, 6 AM	-	34.8	73	27	44	284	1.2	12
Thu 15, 5 AM	45.4	34.3	66	29	43	299	1.2	12
Thu 15, 4 AM	45.5	33.5	63	24	39	296	1.2	12
Thu 15, 3 AM	48.8	33.0	54	23	35	327	1.2	12
Thu 15, 2 AM	48.3	32.4	54	21	35	285	1.2	12
Thu 15, 1 AM	47.4	32.2	55	22	35	288	1.2	12
Thu 15, 12 AM	45.5	34.4	65	19	33	290	1.2	12
Wed 14, 11 PM	45.3	35.7	69	17	23	312	1.2	12
Wed 14, 10 PM	46.7	39.2	75	16	28	289	1.2	12
Wed 14, 9 PM	44.7	40.4	85	4	10	303	1.2	12
Wed 14, 8 PM	47.9	41.9	80	2	5	266	1.2	12
Wed 14, 7 PM	48.3	41.3	77	3	7	134	1.2	12
Wed 14, 6 PM	48.6	40.9	75	3	6	299	1.2	12
Wed 14, 5 PM	50.0	40.6	70	4	7	171	1.2	12
Wed 14, 4 PM	51.3	39.2	63	4	7	120	1.2	12
Wed 14, 3 PM	51.8	38.5	60	4	11	121	1.2	12
Wed 14, 2 PM	52.4	38.1	58	6	14	102	1.2	12
Wed 14, 1 PM	53.6	37.4	54	8	16	96	1.2	12
Wed 14, 12 PM	52.8	37.1	55	11	21	111	1.2	12
Wed 14, 11 AM	50.8	38.4	62	10	19	117	1.2	11
Wed 14, 10 AM	46.5	38.6	74	8	14	133	1.2	12
Wed 14, 9 AM	45.2	38.4	77	6	13	110	1.2	12
Wed 14, 8 AM	41.7	36.6	82	3	6	24	1.2	12
Wed 14, 7 AM	40.8	37.0	86	7	13	133	1.2	12
Wed 14, 6 AM	40.8	36.7	85	9	13	150	1.2	12
Wed 14, 5 AM	41.0	36.4	83	6	8	165	1.2	12
Wed 14, 4 AM	41.3	35.8	78	2	6	155	1.2	12
Wed 14, 3 AM	-	36.9	80	1	4	110	1.2	12
Wed 14, 2 AM	41.0	37.2	81	2	4	109	1.2	12
Wed 14, 1 AM	41.5	36.7	83	3	8	111	1.2	12
Wed 14, 12 AM	-	37.0	80	2	5	311	1.2	12
Tue 13, 11 PM	-	36.1	77	2	5	205	1.2	12
Tue 13, 10 PM	-	36.3	78	2	6	296	1.2	12
Tue 13, 9 PM	42.8	35.8	76	5	7	346	1.2	12
Tue 13, 8 PM	41.0	34.9	79	8	15	244	1.2	12
Tue 13, 7 PM	42.8	35.9	73	12	17	286	1.2	12
Tue 13, 6 PM	-	37.5	76	13	21	289	1.2	12
Tue 13, 5 PM	-	37.8	77	15	22	294	1.2	12
Tue 13, 4 PM	-	38.1	78	17	25	290	1.2	12
Tue 13, 3 PM	-	37.5	71	12	19	301	1.2	12
Tue 13, 2 PM	-	38.0	73	8	16	351	1.2	12
Tue 13, 1 PM	45.3	36.9	72	11	17	307	1.2	12
Tue 13, 12 PM	45.2	37.4	74	8	15	341	1.2	12
Tue 13, 11 AM	42.2	39.3	89	4	9	346	1.2	12
Tue 13, 10 AM	39.4	38.7	98	2	7	360	1.2	12
Tue 13, 9 AM	-	37.3	100	2	7	13	0.1	12
Tue 13, 8 AM	-	37.1	99	3	8	276	0.1	12
Tue 13, 7 AM	35.6	36.8	99	7	12	301	0.1	12
Tue 13, 6 AM	-	36.7	97	2	6	345	1.2	12
Tue 13, 5 AM	-	37.0	99	3	7	153	1.2	12
Tue 13, 4 AM	-	36.9	98	3	7	81	1.2	12
Tue 13, 3 AM	-	36.7	97	5	9	71	1.2	12
Tue 13, 2 AM	-	36.4	97	5	9	54	1.2	12
Tue 13, 1 AM	-	35.1	98	5	9	88	1.2	12
Tue 13, 12 AM	-	35.1	98	5	12	65	1.2	12
Mon 12, 11 PM	-	35.1	98	5	11	97	1.2	12
Mon 12, 10 PM	-	35.0	98	6	13	92	1.2	12
Mon 12, 9 PM	37.4	35.3	94	6	11	74	1.2	12
Mon 12, 8 PM	37.4	34.7	89	5	7	292	1.2	12
Mon 12, 7 PM	-	34.6	83	3	7	310	1.2	12
Mon 12, 6 PM	-	34.0	81	3	6	293	1.2	12
Mon 12, 5 PM	-	33.3	79	4	10	309	1.2	12
Mon 12, 4 PM	-	33.7	80	5	10	342	1.2	12
Mon 12, 3 PM	-	33.9	81	8	14	317	1.2	12
Mon 12, 2 PM	38.3	34.1	84	7	13	330	1.2	12
Mon 12, 1 PM	-	33.7	87	10	16	297	1.2	12
Mon 12, 12 PM	35.6	33.7	87	10	16	300	1.2	12
Mon 12, 11 AM	35.6	33.2	91	13	21	319	1.2	12
Mon 12, 10 AM	34.7	33.0	94	13	20	304	1.2	12
Mon 12, 9 AM	33.8	31.3	96	16	24	309	1.2	12
Mon 12, 8 AM	-	31.2	97	17	26	314	1.2	12
Mon 12, 7 AM	-	31.4	98	19	30	297	1.2	12
Mon 12, 6 AM	-	31.4	98	21	30	297	1.2	12
Mon 12, 5 AM	33.8	31.9	97	23	34	299	1.2	12
Mon 12, 4 AM	33.8	33.2	98	21	32	300	1.2	12
Mon 12, 3 AM	34.8	34.2	97	18	30	309	1.2	12
Mon 12, 2 AM	35.6	35.1	98	21	30	301	1.2	12
Mon 12, 1 AM	37.5	37.3	99	19	28	299	1.2	12
Mon 12, 12 AM	39.2	42.4	100	11	24	290	0.1	12
Sun 11, 11 PM	-	42.5	99	3	6	286	1.2	12
Sun 11, 10 PM	-	42.5	99	3	6	286	1.2	12
Sun 11, 9 PM	-	42.5	99	3	7	59	1.2	12
Sun 11, 8 PM	-	42.5	99	4	11	100	1.2	12
Sun 11, 7 PM	-	42.0	97	6	12	78	1.2	12
Sun 11, 6 PM	-	41.8	96	6	12	42	1.2	12
Sun 11, 5 PM	-	41.9	96	7	13	68	1.2	12
Sun 11, 4 PM	43.7	42.2	95	6	10	38	1.2	12
Sun 11, 3 PM	-	42.8	93	8	14	25	1.2	12
Sun 11, 2 PM	-	43.0	94	8	16	75	1.2	12
Sun 11, 1 PM	-	41.6	96	10	15	75	1.2	12
Sun 11, 12 PM	-	41.6	95	8	15	71	1.2	12
Sun 11, 11 AM	-	41.4	95	8	14	76	1.2	12
Sun 11, 10 AM	-	40.8	95	6	12	77	1.2	12
Sun 11, 9 AM	-	40.5	98	4	9	91	1.2	12
Sun 11, 8 AM	-	40.4	98	2	5	69	1.2	12
Sun 11, 7 AM	-	40.7	99	3	6	349	0.8	12
Sun 11, 6 AM	-	40.6	98	5	7	313	0.8	12
Sun 11, 5 AM	-	40.5	98	5	11	317	1.2	12
Sun 11, 4 AM	-	40.1	97	11	17	310	1.2	12
Sun 11, 3 AM	-	39.1	93	14	20	294	1.2	12
Sun 11, 2 AM	-	39.6	90	15	24	295	1.2	12
Sun 11, 1 AM	-	39.9	89	16	23	311	1.2	12
Sun 11, 12 AM	-	39.4	88	17	24	299	1.2	12
Sat 10, 11 PM	45.1	39.2	83	19	28	286	1.2	12
Sat 10, 10 PM	47.9	38.0	69	11	23	290	1.2	12
Sat 10, 9 PM	53.7	35.4	50	3	9	285	1.2	12
Sat 10, 8 PM	54.0	36.1	51	6	12	221	1.2	12
Sat 10, 7 PM	58.2	34.8	41	9	19	18	1.2	12
Sat 10, 6 PM	59.4	34.2	39	8	16	281	1.2	12
Sat 10, 5 PM	62.3	32.2	32	8	12	278	1.2	12
Sat 10, 4 PM	64.4	32.1	30	12	22	315	1.2	12
Sat 10, 3 PM	65.7	31.3	28	14	22	311	1.2	12
Sat 10, 2 PM	64.2	30.4	28	16	24	306	1.2	12
Sat 10, 1 PM	65.3	30.0	27	16	25	312	1.2	12
Sat 10, 12 PM	62.1	29.5	29	15	24	325	1.2	12
Sat 10, 11 AM	61.1	28.2	29	14	22	296	1.2	12
Sat 10, 10 AM	60.2	27.3	28	9	14	294	1.2	12
Sat 10, 9 AM	61.7	28.6	28	12	19	319	1.2	12
Sat 10, 8 AM	63.2	30.8	30	10	20	312	1.2	12
Sat 10, 7 AM	69.3	31.6	25	13	32	211	1.2	12

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 %	Average wind mph	Strongest gust mph
Oct 17	60.8	55.4	3.9	-2.2	12	8	-	12
Oct 16	66.2	30.2	27.8	0.3	78	9	11	25
Oct 15	50.0	33.8	35.8	19.3	74	38	23	50
Oct 14	53.6	39.2	43.3	34.7	87	52	6	28
Oct 13	46.4	35.6	40.6	34.4	100	69	7	25
Oct 12	42.8	32.0	42.8	30.5	100	78	12	34
Oct 11	44.6	41.0	43.2	38.6	99	85	7	24
Oct 10	77.0	42.8	40.1	26.0	85	16	12	35
Oct 9	84.2	55.4	30.9	12.2	39	7	9	29
Oct 8	77.0	55.4	28.8	22.9	32	15	6	22
Oct 7	77.0	59.0	27.3	18.7	27	13	6	17
Oct 6	78.8	60.8	29.9	22.4	29	13	7	22
Oct 5	86.0	60.8	30.7	17.0	31	9	8	27
Oct 4	78.8	46.4	38.9	30.7	62	21	6	35
Oct 3	68.0	51.8	41.4	34.4	62	33	9	30
Oct 2	80.6	44.6	43.2	33.9	78	21	8	22
Oct 1	66.2	46.4	44.1	34.2	82	37	7	25
Sep 30	73.4	53.6	44.4	32.8	71	28	9	25
Sep 29	75.2	51.8	41.2	32.9	67	23	6	18
Sep 28	68.0	48.2	43.6	37.1	72	35	7	38
Sep 27	68.0	46.4	42.6	29.0	70	32	6	22
Sep 26	73.4	53.6	44.7	31.4	61	24	10	45
Sep 25	78.8	51.8	50.3	35.5	80	23	13	30
Sep 24	77.0	57.2	43.0	36.3	51	25	9	22
Sep 23	69.8	53.6	50.7	39.3	80	44	7	22
Sep 22	77.0	50.0	51.0	38.1	98	30	7	19
Sep 21	66.2	48.2	52.4	45.7	96	49	6	19
Sep 20	53.6	50.0	53.6	49.5	100	92	12	27
Sep 19	60.8	48.2	56.6	47.7	100	71	12	28
Sep 18	80.6	55.4	57.6	44.0	95	32	6	37

Station report

I90 - Sheridan / Johnson County Line, in 6 sheets

Drawn from its report of Oct 17, 2026, 6:02 AM local time, in the manner of the Field Book, and opened beside the plates that explain each part of it.

1The sky

Contents

No cloud reported; visibility 1.25 mi.

From the Field Book

FB-SKY-001, Fig. ACloud classification
The ten cloud genera by height: the etages these layers fall in.

2The air

Contents

60.8 F with a dew point of -0.9 F, 8 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 13,600 ft up.

From the Field Book

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.

3The wind

Contents

From the south southwest (192 degrees) at 4 mph, gusting 10 mph: force 2, a light breeze on the Beaufort scale. The strongest gust today was 12 mph.

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.

4The column

Contents

At 4,698 ft above sea level, 16 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 25.18 inHg and the temperature at 42.2 F; it reports 60.8 F, 18.6 F warmer 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 4,698 ft up reads less: it weighs only the air above it.

5The sun

Contents

On Oct 17 the noon sun stands 36 degrees above the horizon at 44.57 N, and the day is 10 h 44 min long. Level ground there takes 59 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.

6The instrument

Contents

A road weather station, 4,698 ft above sea level. Its report of Oct 17, 2026, 6:02 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.

The instrumentWhat an instrument is FB-INS-001 Stevenson screen and siting FB-INS-009

What it seesLapse rates and stability FB-ENG-005 Water vapour as a gas FB-ENG-011 Blizzard FB-EVT-081 Ice storm FB-EVT-084 Snow squall FB-EVT-086 Heat wave and heat dome FB-EVT-130 Fire weather FB-EVT-139 High wind FB-EVT-150 Humidity variables FB-WAT-002 Fog types FB-WAT-020

I90 - Sheridan / Johnson County Line

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I90 - Sheridan / Johnson County Line Report

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I90 - Sheridan / Johnson County Line, in 6 sheets

1The sky

From the Field Book

2The air

From the Field Book

3The wind

From the Field Book

4The column

From the Field Book

5The sun

From the Field Book

6The instrument

From the Field Book

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