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)
2025-12-19	0.605	-4.897	6.179	38.23	8.4	1.262	240.1	80.5	104	224.7	-10.01	0.48	114.5	0	291
2025-12-20	0.476	-2.17	3.319	52.02	8.77	1.221	166.7	72.14	96.2	263	-5.88	0.462	114.4	0	291
2025-12-21	0.01	-3.268	6.43	65.35	5.635	0.948	231.2	77.55	99.3	229.6	-8.54	0.459	115	0	291
2025-12-22	0.199	-4.29	6.63	40.51	5.504	1.285	238.5	79.68	107.7	191	-12.71	0.454	115	0	291
2025-12-23	0.166	-5.081	6.937	35.26	4.688	1.097	235.3	83.8	115.3	212.3	-11.91	0.452	114.4	0	291
2025-12-24	1.625	-1.03	5.164	73.07	5.994	1.178	242.3	72.65	102.1	291	-2.66	0.449	119.1	2	293
2025-12-25	-0.469	-2.48	2.222	87.8	7.219	1.139	244.5	43.76	25.63	263.5	-4.13	0.503	129.4	5	298
2025-12-26	-2.266	-4.477	0.35	65.99	5.57	1.316	233.1	93.8	124.2	233.2	-7.724	0.496	125	0	298
2025-12-27	-3.681	-8.03	-1.593	68.67	7.66	1.297	244.9	48.68	60.65	269.8	-6.942	0.515	127.9	0	298
2025-12-28	-11.38	-14.77	-7.078	68.08	9.42	1.341	202.9	91.9	57.39	233.2	-18.54	0.547	131.1	11	309
2025-12-29	-8.53	-14.5	-1.676	44.35	5.112	0.924	258.2	88.5	108.9	162.4	-22.75	0.539	130.5	14	323
2025-12-30	-4.606	-10.14	3.065	50.64	4.018	0.843	258.7	87.4	112.5	178.5	-18.63	0.534	131.6	2	325
2025-12-31	-1.5	-5.193	5.981	44.7	2.711	0.788	251.8	83.2	108	199.9	-15.14	0.525	136.2	1	326
2026-01-01	-1.145	-3.73	1.124	81.6	9.13	0.953	200.5	32.8	24.12	303.4	-3.485	0.611	142.7	2	328
2026-01-02	-4.297	-8.88	-1.211	91.8	6.697	0.986	239.2	70.19	31.55	298.4	-7.513	0.734	156.9	7	335
2026-01-03	-3.035	-8.43	3.29	66.66	5.227	0.864	243.9	76.34	51.51	290.8	-12.7	0.706	156.2	0	335
2026-01-04	-1.285	-5.388	3.138	50.3	7.203	1.31	238	81.6	105.4	220.1	-10.84	0.684	155.5	0	335
2026-01-05	-5.412	-7.54	-2.747	68.82	6.664	1.161	240.8	68.3	71.36	245.1	-10.92	0.688	156.1	0	335
2026-01-06	-7.217	-12.87	-1.326	55.63	5.749	1.052	240.8	95.6	120.7	185.3	-18.24	0.675	156.5	37	372
2026-01-07	-5.232	-9.67	-1.607	46.84	4.541	1.052	228.3	64.83	79.68	231.3	-13.23	0.661	156.4	0	372
2026-01-08	-9.21	-11.94	-6.686	89.7	5.537	0.755	193	66.59	32.32	279.4	-11.11	0.841	167.9	7	379
2026-01-09	-15.53	-20.96	-11.26	89.8	6.027	1.272	112.6	94.6	41.74	254.2	-18.06	0.808	172.8	1	380
2026-01-10	-13.06	-18.94	-7.329	89.5	4.884	0.894	261.8	99.5	49.11	265.4	-24.43	0.778	172.8	0	380
2026-01-11	-7.431	-11.44	-0.296	67.51	4.394	0.948	252.3	98.9	76.95	237.6	-18.93	0.742	172.7	0	380
2026-01-12	-5.194	-9.96	1.503	54.68	4.165	0.961	271	96.2	168.9	182.4	-17.27	0.725	172.5	0	380
2026-01-13	-3.319	-7.497	2.376	57.91	10.7	1.223	196.3	87.1	109.8	202	-13.93	0.727	172.4	0	380
2026-01-14	-4.012	-7.935	1.77	67.34	5.766	0.985	165.5	92.6	118.8	190.9	-14.85	0.714	172.5	0	380
2026-01-15	-4.325	-9.1	2.716	43.15	6.043	0.932	249.6	98.8	127.7	168.1	-18.4	0.71	172.6	0	380
2026-01-16	-7.672	-11.26	-5.447	37.35	8.77	1.493	106.1	98.2	127.9	171.5	-18.29	0.712	172.6	0	380
2026-01-17	-10.4	-13.18	-7.457	51.92	13.48	1.881	93.6	100.8	130.4	186.8	-17.6	0.689	170.1	0	380
2026-01-18	-5.708	-11.06	0.969	47.52	5.635	1.067	248	99.8	130.6	177.7	-18.01	0.695	171	0	380
2026-01-19	-8.84	-13.24	-3.772	54.64	4.573	1.027	247.9	101	134	156.3	-20.91	0.688	173.1	0	380
2026-01-20	-7.485	-14.14	-0.482	20.49	5.357	1.342	240.7	103.1	136.6	148.8	-22	0.69	172.6	0	380
2026-01-21	-7.277	-13.07	-0.664	27.68	6.566	0.914	247.4	101.8	134.9	163.6	-20.96	0.684	171.9	0	380
2026-01-22	-4.931	-8.91	0.491	29.37	5.161	1.065	251.7	93.7	124.1	189.9	-16.78	0.686	171.1	0	380
2026-01-23	-5.962	-7.626	-2.955	85	4.345	0.967	230.4	39.75	19.77	287.8	-7.659	0.91	189.4	17	397
2026-01-24	-11.62	-20.09	-7.177	92.7	4.851	0.886	88.9	68.59	22.54	269.1	-15.46	1.151	203.4	3	400
2026-01-25	-17.14	-21.78	-12.45	88.4	9.36	1.381	222.3	92	40.72	242.2	-23.71	1.106	207.5	1	401
2026-01-26	-16.43	-22.61	-9.36	84.6	5.537	0.95	252.9	126.6	159.3	181.7	-29.42	1.025	206.9	15	416
2026-01-27	-11.85	-17.2	-5.559	57.41	6.517	1.015	257.2	122.2	149	162.4	-23.35	0.981	206.4	7	423
2026-01-28	-7.916	-14.39	-0.677	40.43	7.709	1.21	248.6	100.9	122.6	187.5	-18.93	0.943	205.6	0	423
2026-01-29	-11.29	-15.95	-5.911	62.94	5.553	1.054	25.04	123.6	164.7	166.6	-21.82	0.91	205.2	0	423
2026-01-30	-9.92	-14.88	-3.927	65.55	6.027	0.982	329.1	123.1	153.5	167.5	-20.88	0.906	205	0	423
2026-01-31	-5.727	-9.98	0.379	63.57	6.011	1.004	42.51	129.5	166	187.7	-16.25	0.895	204.6	0	423
2026-02-01	-4.54	-10.92	5.023	33.33	3.724	0.838	258.1	123.1	153.3	168	-19.02	0.88	204.4	0	423
2026-02-02	-4.701	-10.34	1.533	43.72	6.207	0.962	246.5	110.2	137.3	187.3	-16.96	0.871	204.2	0	423
2026-02-03	-6.88	-10.9	-1.297	52.03	6.631	1.09	204.9	120.7	149.4	171.7	-18.51	0.864	204	0	423
2026-02-04	-5.357	-10.82	0.04	43.55	4.704	1.095	89.7	126	156.3	172.9	-17.02	0.861	203.9	0	423
2026-02-05	-2.529	-7.668	5.25	45.78	4.475	0.981	223.3	123.9	155	193.9	-14.54	0.848	203.7	0	423
2026-02-06	-2.157	-6.699	5.164	43.98	4.737	0.923	244.9	111.4	140.8	197.4	-13.99	0.843	203.3	0	423
2026-02-07	-3.769	-8.41	1.49	60.28	4.72	0.797	236.7	116.1	149.1	200.5	-13.78	0.84	203.2	0	423
2026-02-08	-3.939	-9.43	2.785	56.64	3.691	0.916	246.6	125.1	162.5	188.8	-14.9	0.836	202.7	0	423
2026-02-09	-2.438	-6.953	4.911	36.7	4.639	1.243	241.6	130.2	164.8	179.4	-14.93	0.832	202.5	1	424
2026-02-10	-1.238	-7.177	2.644	40.19	7.709	1.216	241.1	102.2	130.1	246	-9.14	0.829	201.6	0	424
2026-02-11	-2.749	-4.208	-1.169	74.65	4.818	0.803	217.3	48.01	52.66	286.7	-6.354	0.853	203.4	2	426
2026-02-12	-2.209	-5.009	0.617	62.36	6.795	1.176	235.4	111.8	102.3	266.2	-8.21	0.867	206.5	3	429
2026-02-13	-4.672	-7.457	-2.296	94.1	4.835	0.785	234.6	55.43	26.29	297.9	-6.345	1.136	228.4	8	437
2026-02-14	-6.427	-9.1	-1.508	89.9	5.047	1.191	151	144	49.13	291.3	-10.62	1.098	231.7	0	437
2026-02-15	-2.375	-9.57	5.375	42.04	5.308	1.331	235	106.7	86.1	271	-11.72	1.05	231.7	0	437
2026-02-16	-1.045	-3.281	3.095	51.73	8.31	1.366	243.8	129	158.2	253.6	-6.986	1.019	231.2	0	437
2026-02-17	-8.13	-10.86	-2.859	89.7	14.67	2.039	240.6	102.3	121.4	262.7	-9.08	1.178	249.6	10	447
2026-02-18	-11.3	-16.35	-8.89	93	9.33	1.561	243.7	44.33	18.78	269	-12.15	1.383	276.3	0	447
2026-02-19	-15.79	-18.87	-13.83	90.2	6.256	1.205	229.1	153.7	151.7	255.1	-18.46	1.314	279.5	3	450
2026-02-20	-13.13	-15.08	-11.72	92.1	7.595	1.348	226.9	69.99	23.75	262.5	-14.07	1.434	296.6	0	450
2026-02-21	-14.08	-20.74	-6.149	92.4	3.969	1.018	259	169.5	85.3	265.6	-23.5	1.348	296.1	5	455
2026-02-22	-8.16	-15.61	0.798	67.2	5.063	1.23	239.6	167	190.2	253.6	-18.07	1.304	295.8	0	455
2026-02-23	-2.941	-9.52	4.12	42.93	7.056	1.072	244.4	163.8	204.8	192.7	-14.01	1.252	295.9	1	456
2026-02-24	1.255	-4.715	6.742	42.39	6.909	1.39	236	157.7	195.5	228.7	-8.32	1.202	295.4	0	456
2026-02-25	1.004	-0.958	2.884	71.88	9.24	1.569	136.9	32.21	38.31	302.5	-2.253	1.188	297.1	0	456
2026-02-26	-0.989	-6.541	2.614	55.5	9.42	1.394	199.3	157.6	208.3	228.8	-7.063	1.15	297.6	0	456
2026-02-27	-1.809	-7.302	4.812	43.87	5.619	0.963	249	151.8	199.5	195.8	-12.14	1.14	298.4	0	456
2026-02-28	-0.669	-8.26	7.586	34.47	4.214	0.859	234.3	155.2	204.9	200.8	-11.38	1.129	297.1	0	456
2026-03-01	2.182	-1.27	6.63	57.41	6.811	1.323	229.4	149.7	207.9	238.2	-5.321	1.093	297.2	0	456
2026-03-02	2.172	-0.72	4.98	43.64	7.693	1.498	233.8	97.2	130	248.4	-5.954	1.068	295.2	0	456
2026-03-03	-2.788	-8.74	1.546	57.68	5.472	1.083	241.1	151.4	199.5	213.7	-8.02	1.059	296	0	456
2026-03-04	-2.839	-9.16	4.136	40.49	4.688	1.195	243.8	165.5	227.6	171.8	-12.68	1.055	295.4	0	456
2026-03-05	-2.983	-7.553	1.629	53.03	8.2	1.381	262.1	147.3	195.8	230.6	-8.62	1.062	296.6	0	456
2026-03-06	-10.24	-15.79	-5.532	91.3	5.472	1.014	85.2	116.7	51.98	277.5	-11.85	1.267	313.3	0	456
2026-03-07	-11.11	-17.11	-3.436	81.4	4.737	0.78	252.8	191.1	83.3	273.7	-20.15	1.202	312.6	22	478
2026-03-08	-4.882	-12.4	3.813	66.15	5.129	1.119	240.1	180.9	193.7	231	-13.58	1.135	312.4	0	478