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

Date	Daily Average Air Temperature (C°), Lower	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)	Daily Precipitation (mm)	Water Year Precipitation (mm)
2026-04-14	-5.049	-7.626	-3.324	90.6	4.671	0.846	231.6	158.9	48.97	300.6	-6.224	0.649	218	5	574
2026-04-15	-3.657	-9.46	1.856	70.04	4.492	0.843	235.4	205.3	85.7	297.8	-8.1	0.548	223	8	582
2026-04-16	-0.501	-6.416	4.093	49.87	7.17	1.266	259.4	180.5	259.3	268.6	-7.532	0.511	215.5	1	583
2026-04-17	-7.789	-14.01	-0.226	66.4	7.84	1.626	144.2	193.6	259.5	210.4	-10.87	0.531	225	15	598
2026-04-18	-5.379	-15.22	2.32	35.31	6.582	1.179	93.5	243.9	349.7	169.4	-12.66	0.503	213.9	0	598
2026-04-19	1.27	-5.009	8.21	28.26	5.374	1.148	237.5	221.9	330.5	196.7	-7.734	0.477	206.5	7	605
2026-04-20	3.084	-2.256	9.48	43.2	5.684	0.998	248.5	179.2	287.1	229.9	-6.019	0.436	196	0	605
2026-04-21	3.992	-1.663	9.32	49.84	6.974	1.102	253.6	144.3	242.7	240.8	-5.224	0.402	185.4	0	605
2026-04-22	4.065	0.067	7.517	28.55	9.07	2.058	245.7	158.9	277.6	227.1	-4.817	0.353	175.7	0	605
2026-04-23	-2.495	-7.302	1.602	42.72	8.13	1.35	226.1	184.7	336.9	187.6	-7.683	0.339	173.9	0	605
2026-04-24	-0.603	-9.57	5.613	32.9	6.125	1.259	242.2	166.8	305.8	198	-7.696	0.299	154.4	0	605
2026-04-25	0.522	-4.122	5.007	49.98	7.464	1.528	242.3	149.7	261.8	272.9	-3.527	0.294	144.9	0	605
2026-04-26	-3.129	-5.22	-0.496	94.4	10.22	1.278	243.8	101.7	97.9	300.2	-3.74	0.545	174.7	12	617
2026-04-27	-3.479	-5.839	0.096	83.8	5.504	1.018	226.8	195.6	196.6	284.1	-5.587	0.427	173.1	27	644
2026-04-28	-1.827	-7.978	3.688	50.5	5.635	1.124	238.7	250	352.3	214.3	-7.464	0.35	169.4	24	668
2026-04-29	-0.653	-4.969	3.757	50.88	5.962	1.061	214.1	156.3	224.7	247	-5.226	0.334	166.9	5	673
2026-04-30	-2.286	-6.643	2.433	64.69	6.305	1.071	114.2	181.5	270.5	221.9	-6.533	0.316	166	3	676
2026-05-01	-2.468	-8.03	3.688	63.14	6.468	0.92	206.6	164.4	243.7	230.6	-7.089	0.32	158.3	0	676
2026-05-02	-0.55	-7.866	6.657	54.41	8.02	1.156	242	226.2	367.2	233	-7.848	0.273	152.7	5	681
2026-05-03	1.511	-3.633	6.812	51.18	5.962	1.018	233.1	131.9	231.8	242.1	-5.282	0.235	137.2	2	683
2026-05-04	2.024	-1.297	6.107	63.89	6.354	0.91	227.9	152.4	203.1	279.8	-2.536	0.241	140.9	10	693
2026-05-05	0.828	-3.083	5.207	50.39	7.742	1.212	234.3	136.3	255.3	239.6	-4.496	0.22	133.2	1	694
2026-05-06	-5.559	-9.75	-2.325	89.7	7.497	1.216	147.9	106.7	120.1	251.9	-9.54	0.446	154.4	0	694
2026-05-07	-1.34	-11.16	6.219	56.99	6.207	0.975	78.03	255	351.4	204.8	-10.14	0.291	142.6	40	734
2026-05-08	5.083	0.435	10.47	44.59	7.644	1.103	243.9	212.7	342.3	241.6	-4.048	0.224	128.8	0	734
2026-05-09	4.917	-0.819	9.88	39.85	8.66	1.206	242	128.6	266.9	236.7	-4.071	0.15	122.8	0	734
2026-05-10	3.996	-3.406	11.33	35.07	6.272	1.142	86.1	144.6	360.3	204.1	1.451	0.102	98.8	1	735
2026-05-11	6.722	-0.72	14.01	27.82	5.57	1.194	243.4	118.6	362	209.8	10.96	0.039	63.2	0	735
2026-05-12	8.34	1.236	16.32	31.6	5.913	1.067	251.3	79.29	315.4	238.5	15.4	0.031	31.6	0	735
2026-05-13	8.79	3.081	15.98	37.53	7.53	1.271	257.2	48.54	283.8	265.2	16.3	0.032	1	0	735
2026-05-14	7.154	1.701	13.41	38.29	6.664	1.201	236.8	51	359.9	233	21.84	0.029	1.5	0	735
2026-05-15	6.708	0.152	12.24	38.56	6.337	0.971	246.3	37.06	260.8	247.8	16.44	0.028	1.5	0	735
2026-05-16	8	1.645	13.19	34.41	8	1.392	248.3	39.93	279.1	255.6	17.24	0.024	0.9	0	735
2026-05-17	3.779	-1.057	8.56	55.88	8.61	1.321	256.1	21.05	167.2	281.4	8.1	0.003	1.2	1	736
2026-05-18	-0.74	-4.84	3.995	62.62	9	1.474	249.1	142.5	222.5	259.7	-1.639	0.056	0.7	3	739
2026-05-19	1.864	-2.029	6.868	56.22	6.125	1.263	102.3	44.47	235.6	258	4.964	0.054	1.4	0	739
2026-05-20	2.096	-2.368	6.799	56.8	5.357	0.997	248.8	21.43	162.7	259.4	5.88	0.029	1.6	0	739
2026-05-21	3.677	-2.619	9.76	37.78	7.448	1.297	244.7	49.1	334	213.6	13.2	0.043	1.5	0	739
2026-05-22	2.206	-2.592	6.417	57.61	6.321	1.113	234.6	32.55	222.9	248.9	9.62	0.04	1.5	0	739
2026-05-23	3.859	-2.576	10.02	48.77	7.301	1.112	236.1	41.86	274.6	241.8	13.62	0.047	2	0	739
2026-05-24	6.126	0.027	12.64	47.75	7.089	1.14	251.1	42.99	287.2	246.7	15.73	0.04	1.4	0	739
2026-05-25	6.443	1.672	13.18	53.91	7.481	1.02	278.4	29.61	198.7	284.5	13.22	0.013	1.4	0	739
2026-05-26	4.392	0.518	9.16	67.8	6.027	0.955	242.7	24.8	173.5	279.7	10.73	0.01	1.4	0	739
2026-05-27	6.312	0.139	12.84	46.98	6.762	1.264	253.7	52.79	345.6	237.9	19.14	0.038	1.2	0	739
2026-05-28	8.32	1.915	15.29	36.51	8.2	1.373	255.7	56.22	362.1	244.8	21.79	0.044	1.4	0	739
2026-05-29	6.343	0.462	12.54	40.93	8.9	1.471	257.5	42.11	271.6	255.2	15.98	0.046	1.5	0	739
2026-05-30	2.604	-2.183	7.613	50.11	6.256	1.331	236	52.7	333.2	226.7	18.41	0.043	1.6	0	739
2026-05-31	5.737	-2.013	13.59	39.7	6.582	1.047	254.8	56.49	354.3	231.4	20.29	0.039	1.7	0	739
2026-06-01	8.32	0.996	15.05	31.67	6.011	1.202	252.3	48.84	305	241.4	17.98	0.044	1.4	0	739
2026-06-02	9.71	3.632	15.29	29.8	6.533	1.192	256.9	43.71	274.1	260.6	16.69	0.047	1.6	0	739
2026-06-03	9.37	3.405	16.05	35.45	6.697	1.234	229.8	50.13	316.1	254.9	20.08	0.048	1.8	0	739
2026-06-04	9.27	2.515	15.52	39.89	8.8	1.267	233	47.54	295.2	253.6	18.68	0.065	1.5	0	739
2026-06-05	10.68	4.064	17.09	34.6	6.06	1.22	252.5	45.85	280.9	262.4	18.85	0.052	1.5	0	739
2026-06-06	11.64	4.502	17.83	31.48	7.056	1.313	235.5	50.58	310.9	256.9	20.08	0.079	1.4	0	739
2026-06-07	10.56	4.502	14.67	32.13	6.876	1.445	233.8	47.24	288.3	257.8	18.72	0.088	0.6	0	739
2026-06-08	11.55	7.009	16.48	30.67	8.41	1.756	244.8	56.58	347.7	246.6	22.74	-0.011	1.5	0	739
2026-06-09	11.43	6.361	17.14	31.09	11.19	1.814	242.9	50.21	313.6	263.2	20.49	0.021	0.9	0	739
2026-06-10	10.62	3.065	16.9	30.65	8.51	1.408	233.8	60.19	366.4	240.6	23.55	0.027	1.7	0	739
2026-06-11	9.69	2.814	15.97	29.65	7.138	1.283	230.5	60.76	368.6	232.9	23.31	-0.022	1.8	0	739
2026-06-12	10.5	3.645	16.32	30.88	6.974	1.192	246.5	43.73	258.8	259.6	16.75	0.03	1.8	0	739
2026-06-13	11.08	4.868	17.18	36.95	6.811	0.958	251.5	39.2	235.5	286.5	17.06	-0.005	1.1	0	739
2026-06-14	8.44	4.334	14.01	63.08	5.227	0.898	270.9	26.35	176.4	301.6	12.13	0.028	1.4	0	739
2026-06-15	10.83	5.53	15.57	35.09	9.44	1.241	241.2	38.99	244.3	252.1	17.11	-0.012	1.6	0	739
2026-06-16	11.46	3.503	17.19	27.65	8.1	1.42	239.5	60.28	364.4	242.4	19.99	-0.008	1	0	739
2026-06-17	14.51	7.936	19.46	24.15	8.59	1.584	225.1	60.51	366.3	252.8	23.43	0.009	1.4	0	739
2026-06-18	13.01	5.754	19.56	25.28	8.46	1.39	236.6	61.73	370.3	245.6	23.53	0.01	1.6	0	739
2026-06-19	13.34	6.107	19.31	24.94	6.648	1.128	240.9	53.23	315.8	264.6	21.93	0.028	1.5	0	739
2026-06-20	12.5	4.881	18.6	26.18	7.84	1.336	258.9	61.27	367.5	246.6	23.34	0.003	2	0	739
2026-06-21	10.96	4.15	17.41	26.57	7.66	1.39	238.5	61.94	365	238.2	22.73	-0.004	1.7	0	739
2026-06-22	12.67	4.993	20.01	21.31	7.758	1.266	245.1	62.18	367.5	236.2	23.66	-0.029	1.8	0	739
2026-06-23	13.31	5.586	20.13	16.66	6.958	1.235	253.6	61.86	365	234	23.44	0	1.9	0	739
2026-06-24	10.22	6.331	15.91	51.38	7.285	0.972	247.2	27.44	155.1	302.4	13.4	0.038	1.4	0	739
2026-06-25	9.44	4.63	14.66	70.21	8.22	0.969	236.2	30.35	208.1	297.8	13.08	0.033	1.3	0	739
2026-06-26	9.54	3.784	16.19	64.5	5.88	1.102	242	40.37	254.9	279.6	13.63	0.005	1.5	0	739
2026-06-27	12.02	7.784	16.77	37.7	11.37	2.189	246.7	51.28	328.5	270.1	17.48	0.024	0.8	0	739
2026-06-28	11.32	5.84	16.67	27.23	9.21	1.915	251.1	60.81	368.3	235.5	19.61	0.006	1.3	0	739
2026-06-29	9.44	4.206	15.22	23.91	8.26	1.541	243.6	62.76	374.6	219.3	20.24	0.032	1.8	0	739
2026-06-30	9.5	3.418	14.69	33.76	8.4	1.421	263.3	54.22	321.9	246.3	18.36	0.019	1.8	0	739
2026-07-01	9.06	1.8	15.41	25.83	8.43	1.283	276.2	62.26	369.2	223.4	19.93	0.02	1.8	0	739
2026-07-02	9.86	1.757	17.08	21.33	7.056	1.222	267.2	59.89	350.7	223.7	19.46	0.015	1.8	0	739