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 Monday, September 22, 2025

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	0.1	0.0	*	29.5	38.6₍₂₉₎	76
Ragged Mountain	4210	0.0	0.0₍₁₄₎	*	40.6	46.4₍₁₄₎	88
Humboldt Gulch	4260	0.0	0.0	*	34.7	52.0	67
Mica Creek	4480	0.1	0.0	*	42.4	54.0	79
Quartz Peak	4710	0.0	0.0	*	43.7	48.2	91
Lookout	5180	0.0	0.0	*	35.9	48.8	74
Mosquito Ridge	5270	0.0	0.0	*	43.8	57.6	76
Sunset	5580	0.0	0.0	*	34.0	51.1	67
Lost Lake	6090	0.3	0.0	*	65.4	77.3	85
Basin Index (%)		*			78
LOWER PEND OREILLE
Quartz Peak	4710	0.0	0.0	*	43.7	48.2	91
Bunchgrass Mdw	5020	0.0	0.0	*	43.8	53.4	82
Hidden Lake	5000	0.2	0.0₍₂₀₎	*	58.3	74.2₍₂₀₎	79
Mosquito Ridge	5270	0.0	0.0	*	43.8	57.6	76
Schweitzer Basin	6090	0.0	0.0	*	50.1	53.9	93
Basin Index (%)		*			83
UPPER COLUMBIA
Swamp Creek	3930	0.1	0.0₍₂₁₎	*	30.0	43.4₍₂₁₎	69
Gold Mountain	4500	0.1	N/A	*	23.3	N/A	*
Salmon Meadows	4460	0.0	0.0	*	18.0	21.2	85
Muckamuck	4470	0.0	N/A	*	18.2	N/A	*
Sentinel Butte	4680	0.0	0.0₍₁₈₎	*	21.0	24.5₍₁₇₎	86
Rainy Pass	4880	0.0	0.0	*	39.2	56.0	70
Moses Mtn	5470	-M	0.0₍₂₉₎	*	-M	26.4₍₂₉₎	*
Gold Axe Camp	5380	0.0	0.0₍₁₀₎	*	19.5	18.6₍₁₀₎	105
Harts Pass	6490	0.0	0.0	*	36.3	51.2	71
Basin Index (%)		*			76
CENTRAL COLUMBIA
Trinity	2900	0.1	0.0₍₁₁₎	*	51.1	66.3₍₁₀₎	77
Fish Lake	3430	0.2	0.0	*	45.1	62.0	73
Pope Ridge	3600	0.2	0.0	*	26.0	33.7	77
Stevens Pass	3940	0.1	0.0	*	68.2	89.6	76
Blewett Pass	4240	-M	0.0	*	-M	33.2	*
Upper Wheeler	4330	0.1	0.0	*	22.5	26.8₍₂₉₎	84
Park Creek Ridge	4610	0.0	0.0	*	-M	64.7₍₂₉₎	*
Rainy Pass	4880	0.0	0.0	*	39.2	56.0	70
Grouse Camp	5390	0.0	0.0	*	27.4	33.0	83
Trough	5480	0.2	0.0	*	25.1	26.4	95
Lyman Lake	5990	0.1	0.0	*	62.5	79.9	78
Basin Index (%)		*			77
UPPER YAKIMA
Fish Lake	3430	0.2	0.0	*	45.1	62.0	73
Stampede Pass	3850	0.0	0.0	*	56.8	85.7	66
Olallie Meadows	4010	0.2	0.0	*	89.8	123.9	72
Blewett Pass	4240	-M	0.0	*	-M	33.2	*
Sasse Ridge	4340	0.0	0.0	*	44.0	57.5	77
Grouse Camp	5390	0.0	0.0	*	27.4	33.0	83
Trough	5480	0.2	0.0	*	25.1	26.4	95
Basin Index (%)		*			74
NACHES
White Pass E.S.	4440	0.0	0.0	*	42.8	44.0	97
Bumping Ridge	4600	0.4	0.0	*	55.5	60.0	92
Sawmill Ridge	4640	0.0	0.0₍₁₅₎	*	45.0	71.0₍₁₄₎	63
Cayuse Pass	5260	0.0	0.0₍₁₄₎	*	-M	91.0₍₁₁₎	*
Morse Lake	5400	0.0	0.0	*	74.6	84.2	89
Corral Pass	5810	0.4	0.0₍₂₉₎	*	45.4	61.5₍₂₉₎	74
Pigtail Peak	5800	0.0	0.0	*	63.0	82.7	76
Green Lake	5930	0.0	0.0	*	32.5	37.5	87
Basin Index (%)		*			81
LOWER YAKIMA
Satus Pass	3960	0.0	N/A	*	34.1	N/A	*
Lost Horse	5100	0.0	0.0	*	21.2	32.1	66
Indian Rock	5310	0.1	N/A	*	38.4	48.7₍₁₂₎	79
Green Lake	5930	0.0	0.0	*	32.5	37.5	87
Basin Index (%)		*			78
KLICKITAT
Satus Pass	3960	0.0	N/A	*	34.1	N/A	*
Potato Hill	4480	0.0	0.0	*	56.2	67.2	84
Lost Horse	5100	0.0	0.0	*	21.2	32.1	66
Indian Rock	5310	0.1	N/A	*	38.4	48.7₍₁₂₎	79
Green Lake	5930	0.0	0.0	*	32.5	37.5	87
Basin Index (%)		*			80
LOWER SNAKE, WALLA WALLA
Sourdough Gulch	3970	0.0	0.0₍₂₀₎	*	13.6	18.4₍₂₀₎	74
Bowman Springs	4540	0.0	0.0	*	-M	26.8	*
County Line	4840	0.0	0.0	*	21.8	22.8	96
High Ridge	4900	0.1	0.0	*	44.4	51.4	86
Beaver Reservoir	5140	0.2	0.0	*	27.5	30.0	92
Schneider Meadows	5400	0.0	0.0	*	51.5	46.6	111
Touchet	5520	0.0	0.0	*	46.1	56.1	82
Milk Shakes	5580	0.5	0.0₍₁₄₎	*	64.2	72.6₍₁₃₎	88
Wolf Creek	5730	0.0	0.0	*	28.2	28.2	100
Spruce Springs	5690	0.0	0.0₍₂₁₎	*	31.0	37.0₍₂₀₎	84
Taylor Green	5730	0.0	0.0	*	39.0	37.2	105
Moss Springs	5760	0.0	0.0	*	41.7	51.6	81
Aneroid Lake #2	7430	0.0	0.0	*	40.5	45.0	90
Mt. Howard	7840	0.0	0.0	*	37.6	43.6	86
Basin Index (%)		*			90
LOWER COLUMBIA
Pepper Creek	2140	0.0	0.0₍₁₃₎	*	59.6	63.4₍₁₄₎	94
Calamity	2510	-M	0.0₍₁₃₎	*	94.6	100.6₍₁₂₎	94
Spencer Meadow	3400	0.1	0.0	*	88.3	98.4	90
June Lake	3440	0.1	0.0	*	139.4	165.0	84
Spirit Lake	3520	0.0	0.0	*	80.4	89.8	90
Skate Creek	3770	0.0	N/A	*	-M	N/A	*
Lone Pine	3940	0.0	0.0	*	90.3	97.7	92
Sheep Canyon	3990	0.0	0.0	*	151.4	136.0	111
Surprise Lakes	4280	0.0	0.0	*	89.6	101.9₍₂₉₎	88
Pinto Rock	4450	0.2	N/A	*	60.6	N/A	*
Swift Creek	4440	-M	0.0₍₁₉₎	*	-M	160.4₍₁₈₎	*
White Pass E.S.	4440	0.0	0.0	*	42.8	44.0	97
Potato Hill	4480	0.0	0.0	*	56.2	67.2	84
Paradise	5150	0.0	0.0	*	95.6	117.1	82
Cayuse Pass	5260	0.0	0.0₍₁₄₎	*	-M	91.0₍₁₁₎	*
Morse Lake	5400	0.0	0.0	*	74.6	84.2	89
Pigtail Peak	5800	0.0	0.0	*	63.0	82.7	76
Basin Index (%)		*			90
SOUTH PUGET SOUND
Huckleberry Creek	2250	0.0	0.0₍₂₃₎	*	33.0	42.7₍₂₃₎	77
Mowich	3170	0.0	0.0₍₂₂₎	*	50.9	58.2₍₂₂₎	87
Cougar Mountain	3210	0.3	0.0	*	72.5	102.0	71
Meadows Pass	3230	0.0	0.0₍₂₇₎	*	76.7	97.9₍₂₇₎	78
Skate Creek	3770	0.0	N/A	*	-M	N/A	*
Rex River	3810	0.0	0.0₍₂₅₎	*	90.6	112.4₍₂₅₎	81
Stampede Pass	3850	0.0	0.0	*	56.8	85.7	66
Lynn Lake	3910	0.0	0.0₍₁₄₎	*	82.4	116.7₍₁₃₎	71
Burnt Mountain	4160	0.0	0.0₍₂₂₎	*	59.5	79.2₍₂₁₎	75
Sawmill Ridge	4640	0.0	0.0₍₁₅₎	*	45.0	71.0₍₁₄₎	63
Paradise	5150	0.0	0.0	*	95.6	117.1	82
Cayuse Pass	5260	0.0	0.0₍₁₄₎	*	-M	91.0₍₁₁₎	*
Morse Lake	5400	0.0	0.0	*	74.6	84.2	89
Corral Pass	5810	0.4	0.0₍₂₉₎	*	45.4	61.5₍₂₉₎	74
Basin Index (%)		*			76
CENTRAL PUGET SOUND
Mount Gardner	2930	0.1	0.0₍₂₇₎	*	76.7	105.4₍₂₇₎	73
Tinkham Creek	3000	0.0	0.0₍₂₇₎	*	82.0	109.8₍₂₇₎	75
Cougar Mountain	3210	0.3	0.0	*	72.5	102.0	71
Meadows Pass	3230	0.0	0.0₍₂₇₎	*	76.7	97.9₍₂₇₎	78
Skookum Creek	3310	0.1	0.0₍₂₆₎	*	-M	154.2₍₂₅₎	*
Alpine Meadows	3500	0.0	0.0₍₂₆₎	*	131.6	172.6₍₂₅₎	76
Rex River	3810	0.0	0.0₍₂₅₎	*	90.6	112.4₍₂₅₎	81
Stevens Pass	3940	0.1	0.0	*	68.2	89.6	76
Olallie Meadows	4010	0.2	0.0	*	89.8	123.9	72
Basin Index (%)		*			75
NORTH PUGET SOUND
Hozomeen Camp	1680	-M	N/A	*	31.0	43.6₍₁₉₎	71
Elbow Lake	3050	0.1	0.0₍₂₆₎	*	127.5	149.9₍₂₅₎	85
Marten Ridge	3520	0.0	0.0₍₁₅₎	*	133.1	153.3₍₁₄₎	87
Beaver Pass	3630	0.2	0.0₍₁₉₎	*	61.5	74.6₍₁₈₎	82
Swamp Creek	3930	0.1	0.0₍₂₁₎	*	30.0	43.4₍₂₁₎	69
Wells Creek	4030	0.2	0.0₍₂₆₎	*	73.2	84.8₍₂₅₎	86
Thunder Basin	4310	0.2	0.0	*	54.4	72.5₍₂₉₎	75
Rainy Pass	4880	0.0	0.0	*	39.2	56.0	70
MF Nooksack	4940	0.0	0.0₍₁₈₎	*	96.7	119.0₍₁₈₎	81
Easy Pass	5280	0.0	0.0₍₁₃₎	*	-M	N/A	*
Brown Top	5840	0.0	0.0₍₁₂₎	*	-M	N/A	*
Lyman Lake	5990	0.1	0.0	*	62.5	79.9	78
Harts Pass	6490	0.0	0.0	*	36.3	51.2	71
Basin Index (%)		*			80
OLYMPIC
Mount Crag	3960	0.0	0.0	*	69.3	74.8	93
Dungeness	3990	0.0	0.0₍₂₂₎	*	38.3	45.7₍₂₂₎	84
Buckinghorse	4860	0.0	0.0₍₁₂₎	*	107.5	128.5₍₁₁₎	84
Waterhole	5010	0.0	0.0₍₂₁₎	*	58.5	71.7₍₂₁₎	82
Basin Index (%)		*			85

-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.