Alaska SNOTEL Snow/Precipitation Update Report

Alaska 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 Saturday, May 18, 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
Arctic and Northwest
Atigun Pass	4800	-M	N/A	*	9.8	7.6₍₂₉₎	129
Imnaviat Creek	3050	-M	N/A	*	4.1	3.4₍₂₈₎	121
Kelly Station	310	-M	0.0₍₁₁₎	*	6.9	8.5₍₁₃₎	81
Prudhoe Bay	30	-M	N/A	*	5.5	4.2₍₁₇₎	131
Sagwon	1000	-M	N/A	*	4.2	3.4₍₂₈₎	124
Basin Index (%)		*			113
Central Yukon
American Creek	1050	-M	N/A	*	6.6	N/A	*
Atigun Pass	4800	-M	N/A	*	9.8	7.6₍₂₉₎	129
Eagle Summit	3650	-M	N/A	*	5.8	6.2₍₂₂₎	94
Fort Yukon	430	-M	N/A	*	4.0	4.1₍₂₅₎	98
Jack Wade Jct	3585	2.7	N/A	*	8.0	N/A	*
Monument Creek	1850	0.3	0.0	*	6.0	6.9	87
Mt. Ryan	2800	0.3	0.0	*	5.7	6.3	90
Upper Chena	2850	-M	0.0₍₂₁₎	*	8.0	8.3₍₂₆₎	96
Upper Nome Creek	2520	0.2	N/A	*	7.1	7.5₍₁₃₎	95
Basin Index (%)		*			99
Copper River
Fielding Lake	3000	6.2	N/A	*	12.0	N/A	*
Gulkana River	1830	-M	N/A	*	8.5	N/A	*
Horsepasture Pass	4300	-M	N/A	*	-M	N/A	*
Look Eyrie	5040	-M	N/A	*	5.6	N/A	*
May Creek	1610	0.0	0.0₍₁₃₎	*	11.0	6.7₍₁₃₎	164
Mt. Eyak	1405	20.1	8.3₍₁₄₎	242	95.3	83.6₍₁₅₎	114
Nicks Valley	4280	-M	N/A	*	5.6	N/A	*
Strawberry Reef	30	-M	N/A	*	57.2	N/A	*
Upper Tsaina River	1750	26.3	7.9₍₁₇₎	333	34.0	27.7₍₁₇₎	123
Basin Index (%)		286			119
Kenai Peninsula
Anchor River Divide	1653	5.5	0.5₍₁₉₎	1100*	18.8	19.5₍₁₈₎	96
Cooper Lake	1200	4.2	0.0	*	28.0	26.3	106
Exit Glacier	400	6.4	N/A	*	51.8	N/A	*
Grandview	1100	25.5	23.8₍₂₉₎	107	41.8	46.8	89
Grouse Creek Divide	700	18.7	0.0₍₂₃₎	*	33.1	44.2₍₂₈₎	75
Indian Pass	2350	24.2	17.9	135	35.1	29.4	119
Kenai Moose Pens	300	-M	0.0	*	10.4	9.4	111
Lower Kachemak Creek	1915	-M	N/A	*	28.1	N/A	*
Mcneil Canyon	1320	0.0	0.0	*	17.4	17.8₍₂₁₎	98
Middle Fork Bradley	2300	-M	N/A	*	31.6	35.7₍₂₇₎	89
Moose Inc	120	-M	N/A	*	-M	N/A	*
Mt. Alyeska	1540	20.6	19.8	104	47.8	48.9₍₂₉₎	98
Nuka Glacier	1250	-M	N/A	*	36.2	58.9₍₂₇₎	61
Port Graham	300	-M	0.0₍₂₀₎	*	50.8	51.6₍₂₀₎	98
Schor Garden	340	-M	N/A	*	-M	N/A	*
Summit Creek	1400	4.1	0.0	*	19.1	19.1	100
Turnagain Pass	1880	28.6	35.0₍₂₉₎	82	39.0	46.0	85
Basin Index (%)		135*			90
Matanuska-Susitna Basins
Alexander Lake	160	-M	N/A	*	17.3	N/A	*
East Palmer	230	-M	N/A	*	-M	N/A	*
Frostbite Bottom	2700	17.0	N/A	*	23.1	N/A	*
Horsepasture Pass	4300	-M	N/A	*	-M	N/A	*
Independence Mine	3550	23.8	N/A	*	24.4	20.4₍₂₀₎	120
Monahan Flat	2710	2.4	N/A	*	9.4	8.0₍₂₇₎	118
Moraine	2100	-M	0.0₍₁₈₎	*	14.0	11.9₍₁₈₎	118
Spring Creek	580	-M	N/A	*	10.6	N/A	*
Susitna Valley High	375	0.3	0.0	*	14.2	13.6	104
Tokositna Valley	850	7.9	3.0₍₁₄₎	263	23.4	23.5₍₁₄₎	100
Basin Index (%)		273*			110
Northern Cook Inlet
Anchorage Hillside	2080	6.4	0.0₍₁₅₎	*	21.3	17.1₍₁₅₎	125
East Palmer	230	-M	N/A	*	-M	N/A	*
Frostbite Bottom	2700	17.0	N/A	*	23.1	N/A	*
Indian Pass	2350	24.2	17.9	135	35.1	29.4	119
Mcneil River SGS	140	-M	N/A	*	-M	N/A	*
Moraine	2100	-M	0.0₍₁₈₎	*	14.0	11.9₍₁₈₎	118
Mt. Alyeska	1540	20.6	19.8	104	47.8	48.9₍₂₉₎	98
Spring Creek	580	-M	N/A	*	10.6	N/A	*
Basin Index (%)		136			110
Southeast
Flower Mountain	2510	31.3	N/A	*	14.6	N/A	*
Heen Latinee	2065	-M	N/A	*	-M	N/A	*
Long Lake	850	22.5	22.3₍₂₁₎	101	137.5	106.8₍₂₁₎	129
Moore Creek Bridge	2250	-M	N/A	*	38.9	31.1₍₁₆₎	125
Basin Index (%)		101			128
Southwest
Aniak	80	-M	N/A	*	12.3	6.7₍₁₆₎	184
Checkers Creek	326	-M	N/A	*	-M	N/A	*
Johnsons Camp	25	-M	N/A	*	-M	N/A	*
Pargon Creek	100	-M	N/A	*	8.7	7.0₍₁₉₎	124
Rocky Point	250	-M	N/A	*	5.3	6.9₍₁₉₎	77
Basin Index (%)		*			128
Tanana
Chena Lakes	500	0.1	N/A	*	4.1	N/A	*
Chisana	3320	-M	0.0₍₁₂₎	*	4.6	4.6₍₁₂₎	100
Creamers Field	440	0.0	N/A	*	4.3	N/A	*
Fielding Lake	3000	6.2	N/A	*	12.0	N/A	*
Granite Crk	1240	-M	0.0	*	5.9	4.6	128
Kantishna	1550	0.0	N/A	*	6.4	6.4₍₁₅₎	100
Little Chena Ridge	2000	-M	0.0	*	5.9	6.8	87
Look Eyrie	5040	-M	N/A	*	5.6	N/A	*
Monahan Flat	2710	2.4	N/A	*	9.4	8.0₍₂₇₎	118
Monument Creek	1850	0.3	0.0	*	6.0	6.9	87
Mt. Ryan	2800	0.3	0.0	*	5.7	6.3	90
Munson Ridge	3100	2.6	3.0	87	8.1	9.6	84
Nenana	415	-M	N/A	*	4.3	3.8₍₁₂₎	113
Paradise Hill	2010	0.1	N/A	*	3.7	N/A	*
Teuchet Creek	1640	0.3	0.0	*	4.9	5.2₍₂₉₎	94
Tok	1630	0.0	N/A	*	4.4	N/A	*
Upper Chena	2850	-M	0.0₍₂₁₎	*	8.0	8.3₍₂₆₎	96
Upper Nome Creek	2520	0.2	N/A	*	7.1	7.5₍₁₃₎	95
Basin Index (%)		117*			98
Western Gulf
Cooper Lake	1200	4.2	0.0	*	28.0	26.3	106
Esther Island	50	-M	N/A	*	96.7	99.0₍₁₅₎	98
Exit Glacier	400	6.4	N/A	*	51.8	N/A	*
Grouse Creek Divide	700	18.7	0.0₍₂₃₎	*	33.1	44.2₍₂₈₎	75
Mt. Eyak	1405	20.1	8.3₍₁₄₎	242	95.3	83.6₍₁₅₎	114
Nicks Valley	4280	-M	N/A	*	5.6	N/A	*
Nuchek	50	-M	N/A	*	105.6	N/A	*
Nuka Glacier	1250	-M	N/A	*	36.2	58.9₍₂₇₎	61
Port San Juan	50	-M	N/A	*	75.9	N/A	*
Seal Island	20	-M	N/A	*	39.1	N/A	*
Sugarloaf Mtn	550	-M	N/A	*	53.7	49.2₍₁₃₎	109
Tatitlek	50	-M	N/A	*	61.3	N/A	*
Upper Tsaina River	1750	26.3	7.9₍₁₇₎	333	34.0	27.7₍₁₇₎	123
Basin Index (%)		428			97
Western Interior
Aniak	80	-M	N/A	*	12.3	6.7₍₁₆₎	184
Atigun Pass	4800	-M	N/A	*	9.8	7.6₍₂₉₎	129
Bettles Field	640	1.5	0.0	*	7.6	7.6	100
Coldfoot	1040	-M	0.0₍₂₅₎	*	6.4	6.5₍₂₅₎	98
Galena AK	410	0.0	N/A	*	7.2	N/A	*
Gobblers Knob	2030	-M	N/A	*	9.5	6.9₍₂₃₎	138
Hozatka Lake	206	-M	N/A	*	-M	N/A	*
Kanuti Lake	524	-M	N/A	*	-M	N/A	*
McGrath	340	0.3	N/A	*	9.2	N/A	*
Telaquana Lake	1275	0.0	N/A	*	6.5	N/A	*
Basin Index (%)		*			129

-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.