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)
2025-12-14 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
2025-12-16 17:00	-3.463	-0.664	54.3	1.829	0.444	279.5	9.31	7.981	189.8	-15.73	0.51	117	30.23
2025-12-16 18:00	-4.277	-3.196	58.68	1.47	0.582	265.2	-0.176	-2.921	189.9	-16.68	0.5	117	30.23
2025-12-16 19:00	-4.688	-3.884	58.16	1.633	0.707	277.9	-0.312	-2.789	186.3	-17.04	0.51	117	30.22
2025-12-16 20:00	-5.094	-4.56	49.48	1.274	0.676	264.6	-0.401	-3.072	182.5	-18.57	0.51	117	30.22
2025-12-16 21:00	-5.164	-4.603	45.86	1.519	0.803	257.8	-0.36	-3.073	181.3	-19.01	0.51	117	30.23
2025-12-16 22:00	-5.388	-3.123	42.02	3.169	0.858	256.7	-0.283	-2.694	184.9	-18.88	0.5	117	30.23
2025-12-16 23:00	-4.277	-3.11	41.04	2.613	1.12	260	-0.285	-2.671	188.1	-17.9	0.5	117	30.23
2025-12-17 01:00	-6.063	-4.362	48.77	1.633	0.71	261	-0.661	-3.212	187	-18.98	0.51	117	30.23
2025-12-17 02:00	-6.007	-5.15	56.91	1.388	0.376	271.5	-0.442	-2.964	186.4	-20.01	0.51	117	30.23
2025-12-17 03:00	-6.192	-2.691	62.85	5.112	0.785	236.3	0.068	-2.207	187.9	-18.7	0.51	117	30.22
2025-12-17 04:00	-5.262	-3.083	74.1	2.238	0.557	244.7	-0.578	-3.495	189.1	-18.59	0.51	117	30.22
2025-12-17 05:00	-5.489	-5.107	76.83	1.601	0.549	256.6	-0.371	-2.825	190.9	-18.87	0.5	117	30.2
2025-12-17 06:00	-6.274	-5.065	65.44	1.682	0.624	258.1	-0.463	-2.814	190.2	-18.83	0.51	117	30.17
2025-12-17 07:00	-6.178	-4.939	58.96	2.025	0.928	242.4	-0.186	-2.457	191.1	-18.83	0.5	117	30.16
2025-12-17 08:00	-5.911	-3.871	56.67	1.993	0.721	251.7	6.8	5.719	194.8	-18.56	0.51	117	30.16
2025-12-17 09:00	-4.856	-0.087	51.21	2.581	0.646	227	59.27	104.5	200.9	-16.81	0.5	117	30.16
2025-12-17 10:00	-0.394	2.195	43.83	2.989	1.153	217.4	278.2	318.6	210.6	-8.99	0.5	117	30.16
2025-12-17 11:00	1.84	3.108	44.47	3.773	1.177	145.5	292.3	420.8	210.3	-6.199	0.5	117	30.15
2025-12-17 12:00	3.025	3.757	43.76	5.112	1.369	114.6	330.6	437.6	227.2	-4.796	0.5	117	30.12
2025-12-17 13:00	3.575	4.614	47.57	4.639	1.383	210.1	387.7	486.4	227.8	-3.003	0.5	117	30.08
2025-12-17 14:00	2.983	4.433	49	8.12	2.016	220	169.9	217.1	292.8	-2.156	0.51	117	30.06
2025-12-17 15:00	1.784	3.025	52.57	10.19	2.518	233.8	89.4	161.6	245.6	-5.161	0.5	117	30.04
2025-12-17 16:00	1.658	2.657	52.81	6.811	1.876	105.6	53.64	69.75	261.9	-5.888	0.51	117	30.02
2025-12-17 17:00	1.308	2.139	60.69	8.58	2.48	156.3	12.32	14.67	285.6	-4.195	0.51	117	30.02
2025-12-17 18:00	1.196	1.517	61.36	8.15	2.566	114.3	-0.086	-0.665	292.6	-3.816	0.5	117	30.01