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)
2026-03-18	3.95	-2.098	11.42	27.15	7.023	1.132	337.6	167.9	261.7	195.7	-7.536	0.956	311.9	0	484
2026-03-19	4.996	-1.999	13.38	30.58	4.998	0.994	248.2	166.7	263.6	201.7	-7.542	0.921	296.6	0	484
2026-03-20	5.751	-0.691	14.98	30.54	4.786	0.975	251	166.6	266	204.9	-6.941	0.895	299.4	0	484
2026-03-21	7.471	-0.974	14.56	24.48	6.615	1.272	249.7	167.2	266.3	217.7	-6.551	0.842	286.8	0	484
2026-03-22	5.32	1.196	11.08	38.43	5.651	1.069	211.8	149.8	245.1	237.8	-4.63	0.811	288.8	0	484
2026-03-23	4.869	0.897	10.84	41.49	6.386	1.091	237.5	117.9	187.6	248.5	-4.655	0.788	284.6	0	484
2026-03-24	6.511	0.884	12.63	47.01	6.435	1.196	249.2	157.8	258.4	236.4	-4.738	0.737	287.2	0	484
2026-03-25	7.481	1.153	15.5	45.96	5.227	0.963	247.6	152.3	248.9	240.2	-4.828	0.69	289.5	0	484
2026-03-26	6.526	1.477	11.25	41.73	7.203	1.184	239.2	160.3	268.8	233.3	-4.703	0.639	247.4	0	484
2026-03-27	4.844	-1.719	11.94	43.29	7.824	1.159	240.6	171.3	283.9	230.2	-5.37	0.568	214.6	0	484
2026-03-28	3.802	-2.605	9.84	43.8	5.504	1.219	233.7	153.2	254.3	219.3	-5.58	0.541	207.8	0	484
2026-03-29	4.498	-1.043	9.98	31.85	7.922	1.171	240.2	166.1	281.2	217.9	-5.86	0.487	190.7	0	484
2026-03-30	4.196	-0.691	9.37	39.23	6.86	1.122	237.6	142.6	245.3	246.2	-4.48	0.447	176.1	0	484
2026-03-31	0.733	-1.086	4.024	73.88	5.243	0.979	254.4	80.5	111.7	286.8	-2.603	0.508	177.5	3	487
2026-04-01	-2.055	-3.815	-0.523	97	10.54	1.046	235.4	84.5	24.53	309.6	-2.632	0.86	217.9	24	511
2026-04-02	-0.999	-5.094	2.983	75.93	7.546	1.338	229.3	232	231.7	272.6	-4.66	0.718	217.1	25	536
2026-04-03	-8.41	-12.37	-0.608	69.53	6.566	1.44	99.2	220.6	290.4	203.7	-11.01	0.702	220.6	0	536
2026-04-04	-4.284	-12.97	4.855	41.61	4.851	0.824	278.4	227.1	322.1	168.9	-13.95	0.667	222.8	16	552
2026-04-05	-0.728	-8.16	8.35	39.71	4.165	0.998	232.7	219.9	310.8	184.4	-10.99	0.615	221	2	554
2026-04-06	0.358	-5.332	6.924	51.82	5.88	1.111	228.8	170.3	233.4	237.9	-7.051	0.596	217.9	0	554
2026-04-07	0.615	-3.561	5.517	63.2	8.28	0.88	140.4	151	211.8	246.1	-4.623	0.574	219	2	556
2026-04-08	2.339	-2.576	8.01	42.28	7.971	1.13	235.8	201.8	301.5	215.1	-6.771	0.539	211.8	3	559
2026-04-09	3.232	-2.338	9.33	41.31	6.207	1.046	240.3	151	230	240.3	-5.744	0.507	205	2	561
2026-04-10	3.381	-0.763	7.811	47.72	7.399	1.229	249	148	230.4	254	-3.889	0.483	196.6	0	561
2026-04-11	0.506	-1.182	3.065	77.69	6.321	1.265	248.7	109	143.4	283.8	-2.355	0.502	201.6	5	566
2026-04-12	1.127	-2.199	4.489	49.47	9.98	1.392	237	168.9	242.3	243.4	-4.568	0.48	200.6	1	567
2026-04-13	-1.171	-4.464	2.996	59.32	7.677	1.318	246.4	133	213.2	252.7	-4.988	0.519	201.5	2	569
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