Washington SNOTEL Snow/Precipitation Update Report

Washington SNOTEL Snow/Precipitation Update Report

Based on Mountain Data from NRCS SNOTEL Sites

**Provisional data, subject to revision**

Data based on the first reading of the day (typically 00:00) for Tuesday, February 20, 2024

Basin Site Name	Elev (ft)	Snow Water Equivalent			Water Year-to-Date Precipitation
Basin Site Name	Elev (ft)	Current (in)	Median (in)	Pct of Median	Current (in)	Median (in)	Pct of Median
SPOKANE
Sherwin	3190	4.7	8.6₍₂₉₎	55	16.2	22.9₍₂₉₎	71
Ragged Mountain	4210	10.9	16.9₍₁₄₎	64	27.4	28.1₍₁₄₎	98
Humboldt Gulch	4260	6.6	9.7₍₂₉₎	68	17.8	29.3	61
Mica Creek	4480	10.2	18.0₍₂₉₎	57	23.1	31.7₍₂₉₎	73
Quartz Peak	4710	12.2	17.0	72	29.0	26.5	109
Lookout	5180	7.2	21.5	33	17.3	29.9	58
Mosquito Ridge	5270	17.0	26.8	63	30.2	34.4	88
Sunset	5580	8.6	16.4	52	16.8	26.7	63
Lost Lake	6090	21.1	40.4	52	31.2	45.0	69
Basin Index (%)		56			76
LOWER PEND OREILLE
Quartz Peak	4710	12.2	17.0	72	29.0	26.5	109
Bunchgrass Mdw	5020	12.7	20.4	62	26.5	27.8	95
Hidden Lake	5000	16.6	25.6₍₂₀₎	65	33.6	43.4₍₂₀₎	77
Mosquito Ridge	5270	17.0	26.8	63	30.2	34.4	88
Schweitzer Basin	6090	22.9	37.5	61	21.9	29.9	73
Basin Index (%)		64			87
UPPER COLUMBIA
Swamp Creek	3930	6.6	14.0₍₂₁₎	47	22.5	29.1₍₂₁₎	77
Gold Mountain	4500	3.7	N/A	*	12.4	N/A	*
Salmon Meadows	4460	6.9	8.4	82	9.8	10.3	95
Muckamuck	4470	3.9	N/A	*	9.9	N/A	*
Sentinel Butte	4680	7.1	7.4₍₁₇₎	96	11.3	9.9₍₁₇₎	114
Rainy Pass	4880	14.3	28.2	51	29.5	38.2	77
Moses Mtn	5470	6.7	11.9₍₂₉₎	56	11.6	13.3₍₂₉₎	87
Gold Axe Camp	5380	4.4	7.2₍₁₀₎	61	8.9	7.4₍₁₀₎	120
Harts Pass	6490	23.8	34.5	69	23.6	30.5	77
Basin Index (%)		63			84
CENTRAL COLUMBIA
Trinity	2900	19.4	27.2₍₁₀₎	71	38.9	46.8₍₁₀₎	83
Fish Lake	3430	17.1	24.1	71	34.4	44.9	77
Pope Ridge	3600	11.6	13.8	84	22.0	23.1	95
Stevens Pass	3940	22.0	29.6	74	43.2	57.8	75
Blewett Pass	4240	8.8	11.3	78	21.4	22.1	97
Upper Wheeler	4330	8.9	8.9	100	17.1	16.0	107
Park Creek Ridge	4610	22.7	37.7	60	25.8	47.5	54
Rainy Pass	4880	14.3	28.2	51	29.5	38.2	77
Grouse Camp	5390	11.0	15.2	72	18.6	20.8	89
Trough	5480	9.0	8.4	107	18.5	16.8	110
Lyman Lake	5990	25.3	45.3	56	42.0	51.6	81
Basin Index (%)		68			81
UPPER YAKIMA
Fish Lake	3430	17.1	24.1	71	34.4	44.9	77
Stampede Pass	3850	19.3	28.0	69	40.6	55.2	74
Olallie Meadows	4010	28.0	38.6	73	54.0	78.4	69
Blewett Pass	4240	8.8	11.3	78	21.4	22.1	97
Sasse Ridge	4340	17.5	24.0	73	30.4	38.7	79
Grouse Camp	5390	11.0	15.2	72	18.6	20.8	89
Trough	5480	9.0	8.4	107	18.5	16.8	110
Basin Index (%)		74			79
NACHES
White Pass E.S.	4440	17.6	17.6	100	30.7	31.2	98
Bumping Ridge	4600	15.4	20.4	75	40.6	43.6	93
Sawmill Ridge	4640	11.7	29.0₍₁₄₎	40	28.6	42.4₍₁₄₎	67
Cayuse Pass	5260	23.1	43.7₍₁₄₎	53	-M	48.2₍₁₁₎	*
Morse Lake	5400	31.6	41.6	76	48.0	54.8	88
Corral Pass	5810	19.4	26.0₍₂₉₎	75	22.7	35.5₍₂₉₎	64
Pigtail Peak	5800	25.3	39.4	64	36.1	51.5	70
Green Lake	5930	15.6	19.0	82	22.7	23.6	96
Basin Index (%)		67			81
LOWER YAKIMA
Satus Pass	3960	9.4	N/A	*	25.2	N/A	*
Lost Horse	5100	7.0	15.4	45	11.7	19.0	62
Indian Rock	5310	7.0	N/A	*	28.3	33.2₍₁₂₎	85
Green Lake	5930	15.6	19.0	82	22.7	23.6	96
Basin Index (%)		66			83
KLICKITAT
Satus Pass	3960	9.4	N/A	*	25.2	N/A	*
Potato Hill	4480	22.8	23.4	97	40.9	43.1	95
Lost Horse	5100	7.0	15.4	45	11.7	19.0	62
Indian Rock	5310	7.0	N/A	*	28.3	33.2₍₁₂₎	85
Green Lake	5930	15.6	19.0	82	22.7	23.6	96
Basin Index (%)		79			87
LOWER SNAKE, WALLA WALLA
Sourdough Gulch	3970	0.2	0.6₍₂₀₎	33	5.6	9.2₍₂₀₎	61
Bowman Springs	4540	6.9	6.4	108	15.2	13.6	112
County Line	4840	1.1	3.2	34	11.4	10.6	108
High Ridge	4900	15.8	18.8	84	28.7	29.6	97
Beaver Reservoir	5140	7.4	7.7	96	15.0	15.0	100
Schneider Meadows	5400	20.6	23.0	90	26.9	27.3	99
Touchet	5520	13.3	22.1	60	25.9	34.4	75
Milk Shakes	5580	22.8	27.5₍₁₃₎	83	38.2	42.3₍₁₃₎	90
Wolf Creek	5730	10.5	12.3	85	16.9	16.2	104
Spruce Springs	5690	5.3	10.6₍₁₉₎	50	14.8	19.4₍₂₀₎	76
Taylor Green	5730	15.3	15.4	99	21.2	22.0	96
Moss Springs	5760	15.2	18.6	82	27.4	26.8	102
Aneroid Lake #2	7430	9.5	15.8	60	18.6	21.5	87
Mt. Howard	7840	10.0	11.0	91	16.6	19.6	85
Basin Index (%)		80			92
LOWER COLUMBIA
Pepper Creek	2140	5.6	5.8₍₁₃₎	97	50.4	39.8₍₁₃₎	127
Calamity	2510	0.3	1.6₍₁₂₎	19	67.3	63.6₍₁₂₎	106
Spencer Meadow	3400	12.4	19.8	63	70.0	66.6	105
June Lake	3440	19.9	31.2	64	110.6	108.0	102
Spirit Lake	3520	2.2	3.8	58	54.7	57.6	95
Skate Creek	3770	19.1	N/A	*	56.5	N/A	*
Lone Pine	3940	19.6	28.2	70	68.0	64.0	106
Sheep Canyon	3990	15.2	26.2	58	97.0	86.6	112
Surprise Lakes	4280	25.4	34.7	73	59.7	66.4	90
Pinto Rock	4450	15.4	N/A	*	36.2	N/A	*
Swift Creek	4440	37.4	45.4₍₁₈₎	82	139.4	96.9₍₁₈₎	144
White Pass E.S.	4440	17.6	17.6	100	30.7	31.2	98
Potato Hill	4480	22.8	23.4	97	40.9	43.1	95
Paradise	5150	40.6	52.8	77	71.8	75.1	96
Cayuse Pass	5260	23.1	43.7₍₁₄₎	53	-M	48.2₍₁₁₎	*
Morse Lake	5400	31.6	41.6	76	48.0	54.8	88
Pigtail Peak	5800	25.3	39.4	64	36.1	51.5	70
Basin Index (%)		72			104
SOUTH PUGET SOUND
Huckleberry Creek	2250	0.5	1.7₍₂₃₎	29	21.7	26.3₍₂₃₎	83
Mowich	3170	0.0	0.7₍₂₂₎	0	29.3	31.6₍₂₂₎	93
Cougar Mountain	3210	1.6	11.4	14	46.7	59.4	79
Meadows Pass	3230	17.8	22.6₍₂₇₎	79	47.0	61.8₍₂₇₎	76
Skate Creek	3770	19.1	N/A	*	56.5	N/A	*
Rex River	3810	14.4	26.2₍₂₅₎	55	54.2	67.1₍₂₅₎	81
Stampede Pass	3850	19.3	28.0	69	40.6	55.2	74
Lynn Lake	3910	6.7	16.7₍₁₃₎	40	53.6	65.0₍₁₃₎	82
Burnt Mountain	4160	3.2	13.4₍₂₁₎	24	37.6	43.1₍₂₁₎	87
Sawmill Ridge	4640	11.7	29.0₍₁₄₎	40	28.6	42.4₍₁₄₎	67
Paradise	5150	40.6	52.8	77	71.8	75.1	96
Cayuse Pass	5260	23.1	43.7₍₁₄₎	53	-M	48.2₍₁₁₎	*
Morse Lake	5400	31.6	41.6	76	48.0	54.8	88
Corral Pass	5810	19.4	26.0₍₂₉₎	75	22.7	35.5₍₂₉₎	64
Basin Index (%)		61			81
CENTRAL PUGET SOUND
Mount Gardner	2930	2.4	12.3₍₂₇₎	20	46.9	62.6₍₂₇₎	75
Tinkham Creek	3000	13.4	21.2₍₂₇₎	63	50.3	64.1₍₂₇₎	78
Cougar Mountain	3210	1.6	11.4	14	46.7	59.4	79
Meadows Pass	3230	17.8	22.6₍₂₇₎	79	47.0	61.8₍₂₇₎	76
Skookum Creek	3310	10.8	26.4₍₂₅₎	41	68.3	87.4₍₂₅₎	78
Alpine Meadows	3500	19.0	36.7₍₂₆₎	52	83.2	99.8₍₂₆₎	83
Rex River	3810	14.4	26.2₍₂₅₎	55	54.2	67.1₍₂₅₎	81
Stevens Pass	3940	22.0	29.6	74	43.2	57.8	75
Olallie Meadows	4010	28.0	38.6	73	54.0	78.4	69
Basin Index (%)		58			77
NORTH PUGET SOUND
Hozomeen Camp	1680	-M	N/A	*	19.2	28.6₍₂₀₎	67
Elbow Lake	3050	4.5	26.6₍₂₅₎	17	73.7	97.6₍₂₅₎	76
Marten Ridge	3520	11.7	42.2₍₁₄₎	28	71.2	96.2₍₁₄₎	74
Beaver Pass	3630	13.9	30.2₍₁₉₎	46	36.6	51.1₍₁₈₎	72
Swamp Creek	3930	6.6	14.0₍₂₁₎	47	22.5	29.1₍₂₁₎	77
Wells Creek	4030	9.4	24.6₍₂₅₎	38	38.5	50.7₍₂₅₎	76
Thunder Basin	4310	15.6	23.0	68	40.5	45.7	89
Rainy Pass	4880	14.3	28.2	51	29.5	38.2	77
MF Nooksack	4940	16.4	42.0₍₁₈₎	39	51.5	71.5₍₁₈₎	72
Easy Pass	5280	40.1	72.1₍₁₁₎	56	-M	N/A	*
Brown Top	5840	21.3	47.5₍₁₁₎	45	-M	N/A	*
Lyman Lake	5990	25.3	45.3	56	42.0	51.6	81
Harts Pass	6490	23.8	34.5	69	23.6	30.5	77
Basin Index (%)		47			76
OLYMPIC
Mount Crag	3960	8.3	23.8	35	41.9	48.9₍₂₉₎	86
Dungeness	3990	1.6	7.6₍₂₂₎	21	24.7	31.2₍₂₂₎	79
Buckinghorse	4860	15.5	41.2₍₁₂₎	38	73.7	88.2₍₁₂₎	84
Waterhole	5010	8.4	31.4₍₂₁₎	27	33.6	49.2₍₂₁₎	68
Basin Index (%)		32			80

-M = Missing data.
* = Analysis may not provide a valid measure of conditions.
N/A = Not available.

Footnotes for median and average:
(##) = If less than 30 years are available, this value specifies the number of years used for the median and average calculations.
Sites with less than 10 years available do not have medians or averages.

If the Basin Index (%) percent value is flagged as potentially invalid,
care should be taken to evaluate if the value is representative
of conditions in the basin.

The SNOW WATER EQUIVALENT represents the depth of water in the snowpack, if the
snowpack were melted, expressed in inches.

The WATER YEAR-TO-DATE-PRECIPITATION represents total precipitation since October 1st, expressed in inches.

Contact your state water supply staff for assistance.

Medians and averages are calculated for the period 1991-2020.

Provisional data, subject to revision.

* Site -- Either: (a) the current value is missing; (b) the median or average for the day is not available or is zero; or (c) for snow water equivalent, the median or average for the day is less than 10% of the maximum median or average value for the year.

* Basin - More than half of the stations for a basin with normals report missing or invalid data.

The basin index is calculated as the sum of the valid current values divided by the sum of the corresponding medians or averages and the resulting fraction multiplied by 100.