Swamp Angel Study Plot Full Hourly Data – Center for Snow and Avalanche Studies

Datetime	Minimum Air Temperature (C°), Lower	Maximum Air Temperature (C°), Lower	Relative Humidity (%), Lower	Peak Wind Gust (ms), Upper	Wind Speed (ms)	Wind Direction (°), Upper	Solar Radiation-Down Looking, Broadband (W/m²)	Solar Radiation-Up Looking, Broadband (W/m²)	Longwave Radiation-Up Looking (W/m²)	Snow Surface Temperature (C°)	Snow Depth (m)	SWE (mm)	Barometer (inHg)
2025-12-13 06:00	-5.911	-4.208	49.32	1.846	0.776	264.6	-0.825	-3.86	174.3	-20.56	0.52	117	30.24
2025-12-13 07:00	-6.429	-5.081	46.89	1.535	0.611	265.8	-0.505	-3.361	171.4	-21.76	0.52	117	30.25
2025-12-13 08:00	-6.12	-5.431	45.42	1.519	0.641	262.5	7.397	6.088	171.9	-21.93	0.52	117	30.26
2025-12-13 09:00	-5.714	-3.31	37.37	1.127	0.408	256.1	64.48	115.7	173.7	-20.88	0.52	117	30.26
2025-12-13 10:00	-3.324	3.138	14.07	2.287	0.589	147.6	300.7	334.1	175.7	-13.67	0.52	117	30.28
2025-12-13 11:00	2.63	3.546	15.73	2.711	1.162	99.6	314.3	455.4	175.4	-10.05	0.52	117	30.29
2025-12-13 12:00	2.729	3.826	16.34	2.875	1.227	93.4	385	494.9	175.6	-9.52	0.51	117	30.28
2025-12-13 13:00	3.519	4.39	16.91	2.973	1.477	98.4	430.5	527.3	177	-6.344	0.52	117	30.26
2025-12-13 14:00	3.744	5.389	23.5	2.76	0.827	183.7	364.8	466.7	177.9	-6.91	0.51	117	30.26
2025-12-13 15:00	2.403	4.15	23.56	4.557	2.034	81	168.8	291.5	180.3	-10	0.53	117	30.28
2025-12-13 16:00	-2.256	2.459	42.53	3.234	1.056	263.7	22.4	22.65	180.7	-15.14	0.53	117	30.29
2025-12-13 17:00	-3.449	-2.183	41.99	1.405	0.763	267.5	9.08	7.35	176.3	-17.44	0.52	117	30.3
2025-12-13 18:00	-4.264	-3.268	46.63	1.307	0.759	260.6	-0.352	-3.482	172.5	-19.26	0.52	117	30.3
2025-12-13 19:00	-4.504	-3.815	42.7	1.339	0.805	260.2	-0.439	-3.444	171.5	-20.08	0.52	117	30.3
2025-12-13 20:00	-4.672	-3.858	42.71	1.421	0.753	257.3	-0.494	-2.727	192.6	-18.74	0.52	117	30.31
2025-12-13 21:00	-4.095	-2.915	41.22	1.78	0.882	259.8	-0.282	-2.33	197.7	-17.5	0.52	117	30.31
2025-12-13 22:00	-3.772	-3.324	41.61	1.764	1.011	260.6	-0.475	-2.778	195.3	-17.43	0.53	117	30.32
2025-12-13 23:00	-4.221	-3.153	38.92	2.221	0.938	266.7	-0.464	-3.075	183.9	-18.48	0.52	117	30.33
2025-12-14 01:00	-4.702	-2.661	34.11	2.499	1.155	252.1	-0.564	-3.391	177.1	-19.56	0.52	117	30.34
2025-12-14 02:00	-4.082	-0.987	38.9	3.43	1.352	257.6	-0.338	-3.1	175.7	-18.87	0.52	117	30.34
2025-12-14 03:00	-4.87	-2.872	42.58	2.907	1.201	242.2	-0.92	-4.165	175.8	-19.64	0.52	117	30.35
2025-12-14 04:00	-4.87	-4.095	42.89	2.581	1.068	257.5	-0.468	-3.34	176.5	-20.02	0.52	117	30.35
2025-12-14 05:00	-4.645	-2.282	43.08	2.646	1.213	254.3	-0.488	-3.368	175.2	-19.82	0.52	117	30.35
2025-12-14 06:00	-4.771	-2.17	42.98	3.234	1.284	250.4	-0.539	-3.608	171.5	-19.8	0.52	117	30.35
2025-12-14 07:00	-5.094	-4.234	38.43	3.218	1.013	260.9	-0.503	-3.333	169.5	-20.65	0.52	117	30.36
2025-12-14 08:00	-4.758	-2.269	29.83	3.528	1.426	255.9	7.27	5.703	167.7	-19.63	0.52	117	30.36
2025-12-14 09:00	-4.095	0.673	26.19	3.773	1.36	227.7	63.49	113.5	169.7	-18.42	0.51	117	30.37
2025-12-14 10:00	0.04	3.389	20.78	2.695	1.101	213.7	298.9	335.4	173.3	-12.18	0.5	117	30.38
2025-12-14 11:00	3.375	5.065	25.56	2.76	0.608	173.8	300.4	435.9	176.9	-9.06	0.51	117	30.39
2025-12-14 12:00	4.15	6.08	21.13	2.009	0.616	65.52	365	471.5	181.5	-8.4	0.51	117	30.37
2025-12-14 13:00	5.349	6.897	22.62	2.352	0.86	235.1	416	513.6	185	-5.56	0.51	117	30.36
2025-12-14 14:00	4.235	5.939	25.06	2.597	1.118	231.6	352.6	452.2	185.5	-6.239	0.51	117	30.35
2025-12-14 15:00	0.574	4.219	34.08	1.356	0.623	252.1	163.6	273.1	186.4	-10.59	0.51	117	30.35
2025-12-14 16:00	-0.239	0.785	33.4	2.189	1.017	272.9	31.85	36.79	187.1	-14.39	0.52	117	30.35
2025-12-14 17:00	-1.999	0.264	44.93	1.813	0.925	271.1	13.5	15.24	189.1	-15.22	0.51	117	30.35
2025-12-14 18:00	-3.041	-1.986	47.01	1.356	0.697	265.4	-0.5	-3.508	189	-16.61	0.52	117	30.35
2025-12-14 19:00	-3.281	-2.536	46.1	1.927	0.821	270.9	-0.412	-3.148	182.1	-17.37	0.52	117	30.35
2025-12-14 20:00	-3.324	-2.859	41.13	2.009	1.153	263.6	-0.353	-3.07	180.9	-17.69	0.51	117	30.36
2025-12-14 21:00	-3.449	-2.111	37.87	2.711	1.204	259.6	-0.394	-3.136	180.8	-17.79	0.51	117	30.36
2025-12-14 22:00	-3.716	-1.719	37.67	2.777	1.31	266.8	-0.378	-3.089	180.4	-17.57	0.51	117	30.36
2025-12-14 23:00	-3.703	-2.45	39.36	2.744	1.253	271.3	-0.565	-3.501	179.4	-17.42	0.52	117	30.35
2025-12-15 01:00	-4.392	-1.521	40.17	3.381	1.192	258.9	-0.451	-3.234	181	-18.41	0.51	117	30.35
2025-12-15 02:00	-4.151	-3.561	43.28	1.666	1.063	261.2	-0.508	-3.001	191.1	-18.09	0.51	117	30.34
2025-12-15 03:00	-4.109	-2.859	42.15	2.515	1.063	266.5	-0.435	-2.574	195.5	-17.24	0.51	117	30.34
2025-12-15 04:00	-4.672	-3.519	46.07	1.568	0.658	263.3	-0.623	-2.898	201.7	-17.64	0.51	117	30.34
2025-12-15 05:00	-4.969	-3.954	46.08	1.715	0.655	260.5	-0.401	-2.176	210.3	-17.13	0.51	117	30.34
2025-12-15 06:00	-4.477	-3.828	43.89	1.258	0.641	260	-0.349	-1.908	217.6	-16.42	0.51	117	30.34
2025-12-15 07:00	-4.392	-3.11	47.21	1.519	0.755	262.2	-0.199	-0.974	243.7	-13.77	0.51	117	30.34
2025-12-15 08:00	-3.179	-2.493	44.96	1.96	0.73	263.9	10.19	11.78	227.2	-13.43	0.51	117	30.34
2025-12-15 09:00	-3.577	-1.986	39.7	1.078	0.357	252.6	67.84	112.2	188.5	-17	0.5	117	30.34
2025-12-15 10:00	-1.986	3.25	16.42	2.287	0.571	159.3	263.9	302.8	185.5	-12.19	0.5	117	30.34
2025-12-15 11:00	3.164	3.952	14.65	2.466	1.444	105.8	299.7	405.7	196.9	-8.44	0.51	117	30.34
2025-12-15 12:00	3.925	5.007	13.52	2.695	1.24	98.7	324.8	425	211.5	-7.457	0.51	117	30.32
2025-12-15 13:00	4.98	6.881	14.65	2.891	0.848	95.8	350.8	448	216.4	-5.157	0.5	117	30.3
2025-12-15 14:00	3.84	5.656	19.55	3.136	1.651	97.2	254.3	332.5	217.7	-6.503	0.51	117	30.28
2025-12-15 15:00	1.77	3.883	25.65	3.365	1.18	85.6	144.9	214.2	207.4	-9.19	0.51	117	30.28
2025-12-15 16:00	-1.452	2.376	42.02	1.927	0.727	259.1	42.54	54.38	190.2	-13.79	0.51	117	30.28
2025-12-15 17:00	-2.787	-1.438	47.42	1.797	0.652	273.9	14.75	16.49	187.2	-15.56	0.51	117	30.28
2025-12-15 18:00	-3.716	-2.718	48.32	1.209	0.467	270.5	-0.336	-3.302	183.2	-17.51	0.51	117	30.28
2025-12-15 19:00	-5.094	-3.617	52.52	1.339	0.485	276.1	-0.514	-3.271	178.8	-18.86	0.52	118	30.28
2025-12-15 20:00	-5.094	-4.082	46.4	1.699	0.791	285.9	-0.21	-2.679	175	-18.98	0.51	118	30.28
2025-12-15 21:00	-5.799	-4.221	42.65	1.601	0.579	281.2	-0.464	-3.233	172.9	-19.65	0.51	118	30.27
2025-12-15 22:00	-5.206	-4.026	44.35	1.699	0.874	278.2	-0.345	-2.972	171.1	-19.28	0.51	118	30.27
2025-12-15 23:00	-6.007	-4.897	43.16	1.731	0.778	275	-0.488	-3.217	169.8	-20.46	0.51	118	30.26
2025-12-16 01:00	-6.36	-5.783	44.79	1.307	0.67	260.2	-0.397	-3.025	169.4	-21.45	0.51	118	30.23
2025-12-16 02:00	-6.63	-5.489	43.7	2.172	0.649	269.2	-0.409	-2.97	169.2	-21.52	0.51	118	30.23
2025-12-16 03:00	-6.91	-5.292	46.57	1.682	0.692	272.9	-0.511	-3.048	169.6	-21.32	0.51	118	30.23
2025-12-16 04:00	-7.26	-6.416	47.45	1.388	0.665	271.6	-0.406	-3.009	166.3	-22.03	0.51	118	30.22
2025-12-16 05:00	-7.655	-6.838	45.97	1.552	0.622	262.6	-0.511	-2.955	173.7	-22.14	0.51	117	30.21
2025-12-16 06:00	-7.302	-2.111	33.62	2.515	0.897	284.3	0.384	0.226	230.8	-16.24	0.5	117	30.21
2025-12-16 07:00	-5.532	-3.139	46.46	1.633	0.601	279.6	-1.025	-3.374	195.4	-18.08	0.51	118	30.22
2025-12-16 08:00	-5.994	-4.672	40.25	2.025	0.832	273.3	6.291	4.988	186.2	-19.18	0.51	117	30.22
2025-12-16 09:00	-5.615	-0.226	19.7	2.434	0.603	165	57.87	103.7	185.5	-18.69	0.5	117	30.23
2025-12-16 10:00	-0.523	2.166	31.45	4.426	1.728	98.9	286	322.9	190.5	-11.79	0.51	117	30.22
2025-12-16 11:00	1.984	2.983	30.03	6.484	2.094	85.1	309.4	443.7	194.9	-7.159	0.51	117	30.24
2025-12-16 12:00	1.602	3.431	35.77	5.145	1.686	107.3	364.9	475.5	193.5	-7.318	0.51	117	30.23
2025-12-16 13:00	2.531	3.405	34.68	5.896	2.31	79.3	417.1	515.2	195.4	-4.79	0.51	117	30.22
2025-12-16 14:00	1.869	2.94	34.49	6.141	2.483	83.9	359.3	460	193.9	-5.433	0.5	117	30.22
2025-12-16 15:00	0.392	2.558	37.06	5.847	2.158	81.3	170.2	287.9	192.6	-8.39	0.51	117	30.22
2025-12-16 16:00	-0.677	0.462	39.49	4.263	1.398	87.3	23.46	24.51	190.9	-12.92	0.51	117	30.22