Mammoth Mountain Ski Patrol 2015-16 Storm Summary - Sesame Snow Study Site 9,000' (2,743m)
Date	HN24(")	Base Depth	SWE	Rain	% Density	StormSnow "	Storm SWE "	Season Snow	Season SWE	Season Precip	Base Hi Temp	Base Lo Temp	Notes
10/16/2015	0.0	0.0	0.00	0.45							52	40	Trace of snow from around 10,800' and above
10/17/2015	1.5	1.5	0.82	Y	55						45	34	Rain and snow mix
10/18/2015	1.5	3.0	0.61	Y	41						39	32	Rain and snow mix with dense fog
10/19/2015	0.5	2.0	0.45	Y	90	3.5	1.88	3.5	1.88	2.33	42	34	Rain and snow mix
10/28/2015	0.5	0.5	0.12	N	24						48	31	No rain observed
10/29/2015	1.0	1.5	0.23	N	23	1.5	0.35	5.0	2.23	2.68	44	31	No rain observed
Oct Total	5.0		2.23
11/2/2015	0.5	1.5	0.11	N	22						38	30	Graupel
11/3/2015	12.5	13.0	1.95	N	16						31	22	Snowed all day.  2"/hr at times
11/4/2015	1.0	12.0	0.11	N	11	14.0	2.17	19.0	4.40	4.85	26	15	1/2" overnight cleared then wrap around 1/2' during day
11/9/2015	6.0	17.0	0.64	N	11						33	21	6/.64 overnight 9.5/.75 during day
11/10/2015	14.0	28.0	1.33	N	10	20.0	1.97	39.0	6.37	6.82	23	15	Heavy snowfall late afternoon/early evening
11/15/2015	5.0	23.0	0.34	N	7						47	24	Snow fell during operation hours
11/16/2015	3.5	26.0	0.38	N	11	8.5	0.72	47.5	7.09	7.52	26	11	Overnight snowfall
Date	HN24(")	Base Depth	SWE	Rain	% Density	StormSnow "	Storm SWE "	Season Snow	Season SWE	Season Precip	Base Hi Temp	Base Lo Temp	Notes
11/25/2015	5.0	21.0	0.58	N	12						29	12	Began snowing after sweep on 24th.  Overnight total
11/26/2015	8.5	27.5	0.40	N	5						12	4	All snow fell during ops hrs on 25th.
11/27/2015	1.0	24.0	0.04	N	4						13	6	Overnight snowfall, lots of settlement
11/28/2015	0.5	24.0	0.02	N	4	15.0	1.04	62.50	8.13	8.56	16	2
Nov Total	57.5		5.90
12/4/2015	1.0	20.0	0.08	N	8	1.0	0.08	63.5	8.21	8.64	36	22	Swing and miss
12/10/2015	3.5	22.5	0.95	N	27						45	31	During operational hours
12/11/2015	7.5	28.0	0.55	N	7						26	19	Some felll during afternoon of operational hours of 12/10
12/12/2015	3.0	30.0	0.15	N	5	14.0	1.65	77.5	9.86	10.29	21	9	All fell during ops of 12/11
12/13/2015	3.0	29.0	0.44	N	15						30	12	Strong winds/ power outage midday
12/14/2015	6.0	31.0	0.76	N	13	9.0	1.20	86.5	11.06	11.49	27	9	Snow ended around 5pm on 12/13
12/20/2015	6.0	36.0	0.55	N	9	6.0	0.55	92.5			24	15	Overnight snowfall. Trace during the day.  Obivious break in storms
12/21/2015	T		0.03	N			0.03		11.64	12.07	27	19	Trace from overnight
Date	HN24(")	Base Depth	SWE	Rain	% Density	StormSnow "	Storm SWE "	Season Snow	Season SWE	Season Precip	Base Hi Temp	Base Lo Temp	Notes
12/22/2015	21.5	47.0	4.07	Y	19						29	26	Canyon and Little Eagle had Rain/snow mix.  Strong winds
12/23/2015	2.0	48.5	0.46	N	10	23.5	4.53	116.0	16.17	16.60	31	20	Overnight snow Strong winds
12/25/2015	13.0	58.0	1.15	N	9						15	4	Most snow fell during day 12/24
12/26/2015	1.0	57.0	0.04	N	4	14.0	1.19	130.0	17.36	17.79	22	3	negative digits and Jasco N wind
12/29/2015	2.5	53.0	0.10	N	4	2.5	0.10	132.5	17.46	17.89	22	10	Northern flurries in afternoon 12/28 Closed Top
Dec Total	70.0		9.33
1/2/2016	3.0	53.0	0.15	N	5	3.0	0.15	135.5	17.61	18.04	21	1	Surprise overnight showers from SW
1/5/2016	2.0	53.0	0.20	N	10						32	15
1/6/2016	8.5	63.0	0.90	N	10	10.5	1.10	146.0	18.71	19.14	24	17	Brief clearing for several hours early am.  Definitive storm break
1/7/2016	18.5	75.5	1.34	N	9						22	15
1/8/2016	1.0	70.0	0.03	N	3	19.5	1.37	165.5	20.08	20.51	22	10
1/9/2016	1.0	70.5	0.10	N	10						24	9
1/10/2016	0.5	68.0	0.07	Y	14	1.5	0.17	167.0	20.25	20.68	23	19	Rain/snow mix at Main lodge.  Icing problems for lifts
1/14/2016	0.5	64.0	0.25	N	50	0.5	0.25	167.5	20.50	20.93	27	21	Windy HN24 was unable to collect any snow due to wind.  We found 3-4 inch isolated pockets
Date	HN24(")	Base Depth	SWE	Rain	% Density	StormSnow "	Storm SWE "	Season Snow	Season SWE	Season Precip	Base Hi Temp	Base Lo Temp	Notes
1/15/2016	10.0	72.0	1.50	N	15						29	21	Storm shifted south.  Swing and a hit
1/16/2016	1.5	71.0	0.09	N	6	11.5	1.59	179.0	22.09	22.52	32	22
1/18/2016	4.5	68.0	0.45	N	10	4.5	0.45	183.5	22.45	22.97	31	23
1/19/2016	10.0	70.5	1.17	N	12			193.5	23.62	24.14	30	23
1/23/2016	14.5	86.5	2.00	N	14						32	26	5.5  and .57"h2o fell during ops hours of 1/22
1/24/2016	7.5	90.0	0.85	N	11	22.0	2.85	215.5	26.47	26.99	26	19
1/29/2016	0.0	83.0	0.15	Y	0						45	28	Rain at Main, Snain top of Ch 1
1/30/2016	9.5	84.0	1.46	N	24						36	29	5.5" and .95 was overnight.  Rest fell during ops hrs.
1/31/2016	31.0	107.5	3.20	N	10.5	40.5	4.66	256.0	31.13	31.80	30	20	12.5 and 1.75 fell overnight. 13.0 during ops hrs and 5.5 overnight
Jan Total	123.5		13.91
2/17/2016	5.0	85.0	0.62	N	12.5						40	25	Rain snow mix quickly changed to all snow
2/18/2016	8.5	94.0	1.68	N	20	13.5	2.30	269.5	33.43	34.10	36	17	Snow tapered off by mid day.  Strong SW winds limited lifts.
Feb Total	13.5		2.30
Date	HN24(")	Base Depth	SWE	Rain	% Density	StormSnow "	Storm SWE "	Season Snow	Season SWE	Season Precip	Base Hi Temp	Base Lo Temp	Notes
3/5/2016	6.0	84.0	1.04	Y	16						43	29	Snain fell to 9,800'
3/6/2016	24.0	107.0	2.70	N	12						33	26	Big overnight snowfall.  Rates as much as 3.5"/hour
3/7/2016	4.5	107.5	0.63	N	13						27	19
3/8/2016	6.5	109.0	0.35	N	5	41.0	4.09	310.5	37.52	38.19	29	13
3/12/2016	9.5	108.5	1.16	N	12						32	17	Lots of wind.  Snownado!
3/13/2016	1.0	105.0	0.06	N	6						27	23	Super snownado!
3/14/2016	6.5	112.5	0.96	N	15	17.0	2.18	327.5	39.43	40.27	27	24	Winds died midday
3/22/2016	4.5	100.5	0.65	N	14	4.5	0.65	332.0	40.08	40.92	35	17
3/29/2016	5.5	93.5	0.35	N	6						28	14	Strong upslope winds. NE storm
3/30/2016	3.5	92.0	0.20	N	5.5	9.0	0.55	341.0	40.63	41.47	27	9	Continued wrap around cells
March Total	71.5		8.10
Date	HN24(")	Base Depth	SWE	Rain	% Density	StormSnow "	Storm SWE "	Season Snow	Season SWE	Season Precip	Base Hi Temp	Base Lo Temp	Notes
4/9/2016	1.0	73.5	0.20	N	20						48	32
4/10/2016	5.5	82.0	0.45	N	8	6.5	0.65	347.5	41.28	42.12	34	28
4/23/2016	3.5	63.5	0.60	N	17	3.5	0.60	351.0	41.88	42.72	36	18
4/25/2016	1.5	62.5	0.18	N	12						35	20
4/26/2016	1.0	62.0	0.13	N	13	2.5	0.31	353.5	42.19	43.03	30	21
4/28/2016	3.0	60.0	0.25	N	10	3.0	0.25	356.5	42.44	43.28	37	25
4/30/2016	1.0	57.0	0.08	N	8	1.0	0.08	357.5	42.52	43.36	46	24
April Total	16.5		1.89
5/6/2016	1.5	48.0	0.13	N	9						46	27
5/7/2016	2.0	49.0	0.17	N	9						39	27
5/8/2016	0.5	49.0	0.09	N	18	4.0	0.39	361.5	42.91	43.75	38	29
5/9/2016	T	48.5	0.04	M						43.79	45	32
May Total	4.0		0.43
Season Totals								361.5		43.79
Season Precip includes SWE and rain since October 1st.
Units for 24 Hour Base Hi Temp and Base Lo Temp are degrees Fahrenheit.
Line breaks indicate clearing between storms, despite occasional consecutive days.
All data subject to revision.