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)	Hourly Precipitation (mm)	Barometer (inHg)
2026-02-12 20:00	-2.803	-2.296	57.67	4.982	1.494	237.3	0	-3.044	203.1	-13.53	0.86	205	0	30.17
2026-02-12 21:00	-3.647	-2.619	63.12	3.61	0.918	236.6	-0.238	-2.403	226	-12.94	0.86	205	0	30.16
2026-02-12 22:00	-3.871	-3.281	67.27	2.352	0.601	233.4	-0.036	-1.009	264.2	-9.87	0.86	205	0	30.15
2026-02-12 23:00	-4.408	-3.281	84.9	1.535	0.498	253	0.018	-0.613	288.1	-6.73	0.86	205	0	30.15
2026-02-13 01:00	-5.967	-4.84	90.5	1.65	0.334	210.7	-0.726	-0.854	291.9	-11.71	0.88	207	1	30.15
2026-02-13 02:00	-7.329	-5.687	91.3	2.238	0.732	235.2	-1.111	-1.072	286.6	-18.35	0.89	207	0	30.14
2026-02-13 03:00	-7.457	-5.559	91.5	2.973	1.06	240.7	-0.256	-0.498	286.8	-12.04	0.89	207	0	30.13
2026-02-13 04:00	-6.178	-5.431	94.4	1.552	0.509	243.1	0.012	-0.263	289	-7.685	0.91	208	0	30.11
2026-02-13 05:00	-5.447	-5.22	93.5	1.65	0.432	249.6	0.125	-0.081	291.1	-6.219	0.94	210	2	30.11
2026-02-13 06:00	-5.361	-4.744	93.4	1.568	0.419	227.6	0.025	-0.195	291.8	-6.573	0.95	210	1	30.1
2026-02-13 07:00	-4.84	-4.477	93.6	2.025	0.617	211.8	0.301	-0.085	294	-5.509	0.97	211	0	30.09
2026-02-13 08:00	-4.533	-4.095	92.9	3.593	1.011	235	14.59	7.301	296.1	-5.026	0.99	213	2	30.09
2026-02-13 09:00	-4.208	-4.026	93.8	3.071	1.024	259.5	49.99	26.21	298.9	-4.806	1.01	215	2	30.09
2026-02-13 10:00	-4.095	-3.324	91.9	2.956	0.808	275.5	128.1	65.41	303.8	-4.548	1.02	216	0	30.09
2026-02-13 11:00	-3.535	-3.139	92.9	4.116	1.015	255.1	153.6	76.78	310.4	-4.313	1.03	217	0	30.08
2026-02-13 12:00	-3.617	-3.196	93	4.132	1.054	266.8	165	81.2	309.6	-4.164	1.04	219	0	30.06
2026-02-13 13:00	-3.577	-3.209	94.1	4.835	1.281	270.7	201.2	96	311.2	-4.014	1.05	220	0	30.04
2026-02-13 14:00	-3.561	-3.139	94.1	4.377	1.137	264.5	197.6	92.2	311.6	-4.03	1.07	221	0	30.03
2026-02-13 15:00	-3.548	-3.054	94.2	3.283	0.922	274.4	174.2	79.58	311.6	-3.881	1.09	222	0	30.01
2026-02-13 16:00	-3.281	-2.774	94.9	2.63	0.575	271.4	154.6	68.26	313.3	-3.637	1.11	223	0	30
2026-02-13 17:00	-4.408	-2.296	96.3	3.136	1.159	77.57	86.3	37.57	309.5	-3.917	1.12	224	0	29.99
2026-02-13 18:00	-5.065	-4.392	96.3	2.711	1.021	90.2	7.434	3.409	296.8	-5.026	1.13	225	0	29.99
2026-02-13 19:00	-5.164	-5.038	96.7	2.581	0.565	86.3	-0.044	0.027	293.2	-5.553	1.13	226	0	29.99
2026-02-13 20:00	-5.206	-5.081	96.9	2.385	0.578	109	-0.104	0.02	292.5	-5.566	1.13	226	0	29.98
2026-02-13 21:00	-5.22	-5.137	96.6	1.976	0.616	94.7	-0.012	-0.011	292.4	-5.64	1.14	227	0	29.98
2026-02-13 22:00	-5.911	-5.164	96.4	2.385	0.873	85.9	-0.112	0.091	291.6	-6.076	1.14	228	0	29.99
2026-02-13 23:00	-6.149	-5.868	96.2	2.401	0.69	92.6	-0.174	0.057	289	-7.033	1.14	229	0	29.99
2026-02-14 01:00	-6.346	-6.248	96.5	3.12	0.9	102.5	-0.141	0.013	287.4	-6.73	1.13	229	0	29.99
2026-02-14 02:00	-6.29	-6.136	96.4	3.61	0.761	261.2	-0.03	-0.024	287.8	-6.48	1.13	229	0	29.99
2026-02-14 03:00	-6.192	-6.106	96.5	2.891	0.941	142.8	-0.025	-0.012	288.2	-6.592	1.13	230	0	29.99
2026-02-14 04:00	-6.192	-6.063	96.4	3.969	1.212	130.6	-0.028	-0.013	288.3	-6.629	1.14	231	0	29.99
2026-02-14 05:00	-6.304	-6.162	96.4	4.034	1.21	103.6	-0.042	0.021	288	-6.764	1.15	231	0	30
2026-02-14 06:00	-6.459	-6.261	96.4	3.724	1.228	108	-0.058	0.027	287.3	-6.918	1.15	231	0	30
2026-02-14 07:00	-6.63	-6.373	96.2	3.201	1.108	87.8	0.241	0.15	286.8	-6.99	1.14	232	0	30.01
2026-02-14 08:00	-6.755	-6.587	96.2	3.218	1.283	90.9	27.48	11.58	286.7	-7.045	1.14	231	0	30.03
2026-02-14 09:00	-6.726	-6.387	96.4	3.61	1.181	94.5	126.7	52.97	289.7	-6.497	1.14	232	0	30.05
2026-02-14 10:00	-6.573	-6.274	96.3	5.047	1.974	93.4	266.4	113.4	293.8	-5.689	1.13	232	0	30.07
2026-02-14 11:00	-6.429	-5.038	96.8	3.74	1.275	80.5	521.3	203.9	308.8	-3.43	1.13	232	0	30.09
2026-02-14 12:00	-5.911	-4.589	93.9	3.642	1.236	78.28	632.3	208.9	314.9	-5.003	1.12	232	0	30.1
2026-02-14 13:00	-5.431	-2.899	84.3	2.826	0.946	93.5	633	171.8	312.8	-4.784	1.11	232	0	30.09
2026-02-14 14:00	-4.547	-3.828	88.2	3.593	1.389	86.3	567.4	155.1	313.6	-5.347	1.1	232	0	30.1
2026-02-14 15:00	-4.234	-1.508	74.99	3.757	0.794	104.1	459.4	154.3	312.9	-7.111	1.09	232	0	30.1
2026-02-14 16:00	-5.911	-2.069	85	1.813	1.036	247.5	184	90.1	311.2	-12.55	1.1	232	0	30.12
2026-02-14 17:00	-8.05	-5.925	84	1.878	1.283	264.7	26.73	18.51	285.9	-16.93	1.1	232	0	30.13
2026-02-14 18:00	-8.95	-7.978	85.3	1.584	0.785	270.8	10.04	3.897	276.5	-18.89	1.1	232	0	30.13
2026-02-14 19:00	-9.1	-8.64	86.4	2.107	0.856	270.3	0.159	-1.09	274.2	-19.86	1.1	232	0	30.15
2026-02-14 20:00	-9.1	-8.64	84.4	1.911	1.053	267.1	0.14	-0.979	274.2	-19.94	1.1	232	0	30.16
2026-02-14 21:00	-8.89	-7.134	80.4	3.332	1.383	256.6	0.182	-0.987	278.3	-19.49	1.1	232	0	30.17
2026-02-14 22:00	-9.05	-6.755	80.1	3.789	1.373	257.7	0.195	-1.002	279.7	-19.03	1.1	232	0	30.17
2026-02-14 23:00	-8.52	-6.304	84.4	4.622	1.608	255.5	0.232	-0.777	281.7	-18.33	1.1	232	0	30.17
2026-02-15 01:00	-8.46	-6.178	78.24	3.92	1.615	253.2	0.067	-1.091	280.3	-19.07	1.09	232	0	30.16
2026-02-15 02:00	-9.26	-7.022	74.25	5.308	1.657	223.5	0.05	-0.869	278.3	-19.84	1.09	232	0	30.15
2026-02-15 03:00	-9.57	-7.796	70.5	4.492	1.284	230.4	-0.073	-0.691	275.7	-20.99	1.09	232	0	30.15
2026-02-15 04:00	-9.44	-6.923	84.3	3.561	1.283	233.4	-0.043	-0.808	276.2	-20.38	1.09	232	0	30.14
2026-02-15 05:00	-8.88	-7.497	79.77	2.532	1.22	253	0.126	-0.692	276.8	-19.95	1.08	232	0	30.14
2026-02-15 06:00	-7.978	-7.19	78.25	2.368	1.237	233.4	0.1	-0.899	280.1	-18.72	1.08	232	0	30.14
2026-02-15 07:00	-7.415	-5.447	62.64	3.103	1.282	245.6	0.756	-1.113	282	-17.85	1.08	232	0	30.14
2026-02-15 08:00	-6.6	-5.388	69.51	3.071	1.247	233.1	30.48	13.58	283.9	-18.54	1.08	232	0	30.15
2026-02-15 09:00	-6.023	-2.619	59.59	3.201	1.251	222.3	114.1	52.66	288.3	-13.95	1.07	232	0	30.15
2026-02-15 10:00	-3.366	0.574	28.46	4.982	1.232	238.1	210.4	102.4	291.2	-9.82	1.07	232	0	30.16
2026-02-15 11:00	0.379	2.139	23.79	4.639	1.529	247.2	341.8	166.7	291	-7.148	1.07	232	0	30.16
2026-02-15 12:00	2.123	3.728	21.8	4.786	1.261	213.7	464.8	240.1	288.1	-4.726	1.07	232	0	30.16
2026-02-15 13:00	3.22	4.107	23.3	3.855	1.217	187.7	488.9	395.9	245.4	-3.949	1.07	232	0	30.14
2026-02-15 14:00	3.616	4.262	21.6	3.185	0.953	250.5	335.3	401.3	253.5	-4.995	1.07	232	0	30.12
2026-02-15 15:00	3.348	5.375	17.32	4.688	1.295	260.5	367	458.8	253.5	-4.745	1.06	232	0	30.11
2026-02-15 16:00	1.813	3.826	25.07	4.916	1.422	249.2	128.1	152.6	257.7	-7.068	1.07	232	0	30.1
2026-02-15 17:00	1.009	2.053	18.96	4.851	1.727	242	68.15	81.1	252.7	-8.41	1.06	232	0	30.11
2026-02-15 18:00	-1.887	1.18	34.43	4.573	1.167	228.7	13.58	15.04	250.7	-9.78	1.06	232	0	30.11
2026-02-15 19:00	-2.154	-0.958	42.33	2.989	1.19	223.4	-0.275	-1.804	253.8	-9.81	1.06	232	0	30.11
2026-02-15 20:00	-1.986	-1	40.78	3.887	1.24	223.5	-0.307	-1.564	259.7	-9.2	1.06	232	0	30.11
2026-02-15 21:00	-1.676	-1.227	45.73	3.936	1.308	229.1	-0.31	-1.36	266.2	-8.59	1.06	232	0	30.12
2026-02-15 22:00	-2.098	-1.577	49.4	3.871	1.508	228.1	-0.326	-1.18	269.8	-8.15	1.05	232	0	30.11
2026-02-15 23:00	-2.183	-1.593	46.6	4.263	1.438	237.7	-0.225	-0.944	273.2	-7.808	1.06	232	0	30.11
2026-02-16 01:00	-2.52	-1.689	52.45	3.005	1.321	244.5	-0.228	-0.906	275.4	-7.66	1.05	232	0	30.08
2026-02-16 02:00	-2.816	-1.689	60.14	3.43	1.153	240.6	-0.411	-1.291	269.6	-8.09	1.05	232	0	30.07
2026-02-16 03:00	-3.153	-2.325	64.56	2.156	0.892	249.2	-0.266	-1.131	269.6	-8.21	1.05	232	0	30.06
2026-02-16 04:00	-3.11	-2.154	58.8	2.989	1.39	245.4	-0.06	-1.018	266.4	-8.14	1.05	232	0	30.06
2026-02-16 05:00	-2.536	-2.069	60.77	3.332	1.139	233.3	-0.192	-1.41	260	-8.79	1.05	232	0	30.06
2026-02-16 06:00	-2.592	-2.338	61.85	3.659	1.444	243.7	-0.126	-1.641	250.7	-9.19	1.05	232	0	30.05
2026-02-16 07:00	-3.281	-2.437	59.59	2.613	1.222	237.6	0.095	-1.578	240.2	-10.57	1.05	232	0	30.06