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, September 15, 2026

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	0.0	0.0	*	38.8	38.6₍₂₉₎	101
Ragged Mountain	4210	-M	0.0₍₁₄₎	*	-M	45.7₍₁₄₎	*
Humboldt Gulch	4260	-M	0.0	*	-M	50.6	*
Mica Creek	4480	0.1	0.0	*	51.5	53.0	97
Quartz Peak	4710	0.2	0.0	*	44.5	47.6	93
Lookout	5180	0.1	0.0	*	52.4	48.6	108
Mosquito Ridge	5270	0.1	0.0	*	58.4	56.8	103
Sunset	5570	0.0	0.0	*	52.7	50.0	105
Lost Lake	6090	0.0	0.0	*	83.9	76.0	110
Basin Index (%)		*			103
LOWER PEND OREILLE
Quartz Peak	4710	0.2	0.0	*	44.5	47.6	93
Bunchgrass Mdw	5020	0.2	0.0	*	43.8	52.6	83
Hidden Lake	5000	0.0	0.0₍₂₀₎	*	71.6	72.9₍₂₀₎	98
Mosquito Ridge	5270	0.1	0.0	*	58.4	56.8	103
Schweitzer Basin	6090	0.0	0.0	*	52.1	52.9	98
Basin Index (%)		*			96
UPPER COLUMBIA
Swamp Creek	3930	0.1	0.0₍₂₁₎	*	55.3	42.9₍₂₁₎	129
Gold Mountain	4500	0.1	N/A	*	19.7	N/A	*
Salmon Meadows	4460	-M	0.0	*	18.3	21.0	87
Muckamuck	4470	0.1	N/A	*	18.2	N/A	*
Sentinel Butte	4680	0.0	0.0₍₁₈₎	*	21.7	24.0₍₁₇₎	90
Rainy Pass	4880	0.2	0.0	*	64.3	55.6	116
Moses Mtn	5470	0.1	0.0₍₂₉₎	*	18.8	26.1₍₂₉₎	72
Gold Axe Camp	5380	0.2	0.0₍₁₀₎	*	13.9	18.4₍₁₀₎	76
Harts Pass	6490	0.0	0.0	*	51.5	50.4	102
Basin Index (%)		*			102
CENTRAL COLUMBIA
Trinity	2890	0.1	0.0₍₁₁₎	*	70.4	66.0₍₁₀₎	107
Fish Lake	3440	-M	0.0	*	69.6	61.7	113
Pope Ridge	3590	-M	0.0	*	-M	33.6	*
Stevens Pass	3940	0.0	0.0	*	101.7	89.4	114
Blewett Pass	4240	0.0	0.0	*	40.8	33.0	124
Upper Wheeler	4330	0.0	0.0	*	32.8	26.3₍₂₉₎	125
Park Creek Ridge	4610	0.0	0.0	*	71.8	63.9₍₂₉₎	112
Rainy Pass	4880	0.2	0.0	*	64.3	55.6	116
Grouse Camp	5390	0.0	0.0	*	35.7	33.0	108
Trough	5480	0.0	0.0	*	32.3	26.0	124
Lyman Lake	5990	0.3	0.0	*	81.9	79.6	103
Basin Index (%)		*			112
UPPER YAKIMA
Fish Lake	3440	-M	0.0	*	69.6	61.7	113
Stampede Pass	3850	0.1	0.0	*	85.9	85.6	100
Olallie Meadows	4010	0.0	0.0	*	128.0	123.0	104
Blewett Pass	4240	0.0	0.0	*	40.8	33.0	124
Sasse Ridge	4340	0.0	0.0	*	61.6	57.1	108
Grouse Camp	5390	0.0	0.0	*	35.7	33.0	108
Trough	5480	0.0	0.0	*	32.3	26.0	124
Basin Index (%)		*			108
NACHES
White Pass E.S.	4440	0.0	0.0	*	56.7	44.0	129
Bumping Ridge	4600	0.2	0.0	*	79.8	59.7	134
Sawmill Ridge	4640	0.0	0.0₍₁₅₎	*	73.9	70.2₍₁₄₎	105
Cayuse Pass	5260	0.2	0.0₍₁₄₎	*	-M	90.9₍₁₁₎	*
Morse Lake	5400	0.1	0.0	*	80.2	83.4	96
Corral Pass	5810	0.1	0.0₍₂₉₎	*	61.1	60.9₍₂₉₎	100
Pigtail Peak	5800	0.2	0.0	*	81.3	80.8	101
Green Lake	5920	0.0	0.0	*	41.5	37.2	112
Basin Index (%)		*			109
LOWER YAKIMA
Satus Pass	3960	0.0	N/A	*	30.0	N/A	*
Lost Horse	5100	-M	0.0	*	-M	32.0	*
Indian Rock	5320	0.1	N/A	*	41.3	48.7₍₁₂₎	85
Green Lake	5920	0.0	0.0	*	41.5	37.2	112
Basin Index (%)		*			96
KLICKITAT
Satus Pass	3960	0.0	N/A	*	30.0	N/A	*
Potato Hill	4480	0.0	0.0	*	63.1	66.6	95
Lost Horse	5100	-M	0.0	*	-M	32.0	*
Indian Rock	5320	0.1	N/A	*	41.3	48.7₍₁₂₎	85
Green Lake	5920	0.0	0.0	*	41.5	37.2	112
Basin Index (%)		*			96
LOWER SNAKE, WALLA WALLA
Sourdough Gulch	3960	0.1	0.0₍₂₀₎	*	18.5	18.4₍₂₀₎	101
Bowman Springs	4550	0.0	0.0	*	21.8	26.6	82
County Line	4840	0.0	0.0	*	20.5	22.6	91
High Ridge	4900	0.0	0.0	*	44.2	51.0	87
Beaver Reservoir	5140	0.0	0.0	*	24.1	29.9	81
Schneider Meadows	5400	0.0	0.0	*	34.4	46.5	74
Touchet	5520	0.0	0.0	*	54.5	55.3	99
Milk Shakes	5580	0.2	0.0₍₁₃₎	*	65.8	72.6₍₁₃₎	91
Wolf Creek	5730	0.1	0.0	*	21.6	27.6	78
Spruce Springs	5690	0.2	0.0₍₂₁₎	*	34.0	36.4₍₂₀₎	93
Taylor Green	5730	0.0	0.0	*	29.6	36.6	81
Moss Springs	5760	0.1	0.0	*	45.8	51.0	90
Aneroid Lake #2	7430	0.0	0.0	*	37.3	44.4	84
Mt. Howard	7840	0.0	0.0	*	31.1	43.1	72
Basin Index (%)		*			86
LOWER COLUMBIA
Pepper Creek	2140	0.0	0.0₍₁₃₎	*	72.5	63.3₍₁₄₎	115
Calamity	2510	-M	0.0₍₁₃₎	*	103.3	98.8₍₁₂₎	105
Spencer Meadow	3400	0.0	0.0	*	91.6	97.0	94
June Lake	3440	0.0	0.0	*	157.1	163.0	96
Spirit Lake	3520	0.0	0.0	*	93.3	88.5	105
Skate Creek	3770	0.0	N/A	*	112.2	N/A	*
Lone Pine	3940	0.0	0.0	*	92.8	96.6	96
Sheep Canyon	3990	0.0	0.0	*	149.1	135.4	110
Surprise Lakes	4280	0.0	0.0	*	101.6	101.7₍₂₉₎	100
Pinto Rock	4450	0.0	N/A	*	53.8	N/A	*
Swift Creek	4440	0.0	0.0₍₁₉₎	*	197.3	158.2₍₁₈₎	125
White Pass E.S.	4440	0.0	0.0	*	56.7	44.0	129
Potato Hill	4480	0.0	0.0	*	63.1	66.6	95
Paradise	5150	0.0	0.0	*	125.2	117.0	107
Cayuse Pass	5260	0.2	0.0₍₁₄₎	*	-M	90.9₍₁₁₎	*
Morse Lake	5400	0.1	0.0	*	80.2	83.4	96
Pigtail Peak	5800	0.2	0.0	*	81.3	80.8	101
Basin Index (%)		*			105
SOUTH PUGET SOUND
Huckleberry Creek	2250	-M	0.0₍₂₃₎	*	53.4	42.7₍₂₃₎	125
Mowich	3170	-M	0.0₍₂₂₎	*	-M	57.6₍₂₂₎	*
Cougar Mountain	3210	0.6	0.0	*	107.4	100.3	107
Meadows Pass	3230	0.0	0.0₍₂₇₎	*	112.6	96.9₍₂₇₎	116
Skate Creek	3770	0.0	N/A	*	112.2	N/A	*
Rex River	3810	0.0	0.0₍₂₅₎	*	127.5	110.9₍₂₅₎	115
Stampede Pass	3850	0.1	0.0	*	85.9	85.6	100
Lynn Lake	3900	0.2	0.0₍₁₄₎	*	122.3	115.2₍₁₃₎	106
Burnt Mountain	4160	0.0	0.0₍₂₂₎	*	81.4	78.3₍₂₁₎	104
Sawmill Ridge	4640	0.0	0.0₍₁₅₎	*	73.9	70.2₍₁₄₎	105
Paradise	5150	0.0	0.0	*	125.2	117.0	107
Cayuse Pass	5260	0.2	0.0₍₁₄₎	*	-M	90.9₍₁₁₎	*
Morse Lake	5400	0.1	0.0	*	80.2	83.4	96
Corral Pass	5810	0.1	0.0₍₂₉₎	*	61.1	60.9₍₂₉₎	100
Basin Index (%)		*			107
CENTRAL PUGET SOUND
Mount Gardner	2930	-M	0.0₍₂₇₎	*	108.4	103.1₍₂₇₎	105
Tinkham Creek	3000	0.0	0.0₍₂₇₎	*	116.2	107.5₍₂₇₎	108
Cougar Mountain	3210	0.6	0.0	*	107.4	100.3	107
Meadows Pass	3230	0.0	0.0₍₂₇₎	*	112.6	96.9₍₂₇₎	116
Skookum Creek	3320	0.1	0.0₍₂₅₎	*	159.3	153.8₍₂₄₎	104
Alpine Meadows	3500	0.0	0.0₍₂₆₎	*	160.8	167.5₍₂₅₎	96
Rex River	3810	0.0	0.0₍₂₅₎	*	127.5	110.9₍₂₅₎	115
Stevens Pass	3940	0.0	0.0	*	101.7	89.4	114
Olallie Meadows	4010	0.0	0.0	*	128.0	123.0	104
Basin Index (%)		*			107
NORTH PUGET SOUND
Hozomeen Camp	1680	-M	N/A	*	45.2	43.0₍₁₉₎	105
Elbow Lake	3050	0.3	0.0₍₂₆₎	*	145.0	147.4₍₂₅₎	98
Marten Ridge	3520	0.0	0.0₍₁₅₎	*	144.0	150.8₍₁₄₎	95
Beaver Pass	3630	0.0	0.0₍₁₉₎	*	74.3	72.6₍₁₈₎	102
Swamp Creek	3930	0.1	0.0₍₂₁₎	*	55.3	42.9₍₂₁₎	129
Wells Creek	4040	0.0	0.0₍₂₅₎	*	89.5	83.9₍₂₄₎	107
Thunder Basin	4310	0.0	0.0	*	82.1	72.1₍₂₉₎	114
Rainy Pass	4880	0.2	0.0	*	64.3	55.6	116
MF Nooksack	4940	0.0	0.0₍₁₈₎	*	121.7	115.3₍₁₈₎	106
Easy Pass	5280	0.0	0.0₍₁₁₎	*	-M	N/A	*
Brown Top	5850	0.1	0.0₍₁₁₎	*	-M	N/A	*
Lyman Lake	5990	0.3	0.0	*	81.9	79.6	103
Harts Pass	6490	0.0	0.0	*	51.5	50.4	102
Basin Index (%)		*			105
OLYMPIC
Mount Crag	3960	0.1	0.0	*	66.6	73.5	91
Dungeness	3990	0.0	0.0₍₂₂₎	*	37.4	45.0₍₂₂₎	83
Buckinghorse	4850	0.0	0.0₍₁₂₎	*	-M	127.5₍₁₁₎	*
Waterhole	5010	0.0	0.0₍₂₁₎	*	60.4	70.7₍₂₁₎	85
Basin Index (%)		*			87

-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.