Supercell over Laramie
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Wyoming Snow Precipitation Update


United States Natural Resources Water and Climate Center Department of Conservation Portland, Oregon Agriculture Service S N O W - P R E C I P I T A T I O N U P D A T E Based on Mountain Data from NRCS SNOTEL Sites As of MONDAY: MAY 6 , 2024 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Median Med ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 7.5 8.2 91 23.0 23.1 100 Blind Bull Sum 8650 26.4 24.1 110 19.2 19.6 98 Cottonwood Creek 7670 13.3 15.6 85 29.0 28.5 102 East Rim Divide 7930 -M 4.8 * 12.8 12.8 100 Grand Targhee 9260 43.3 46.4 93 33.6 36.4 92 Granite Creek 6770 6.2 8.3 75 18.1 21.0 86 Grassy Lake 7265 22.2 25.6 87 37.4 38.8 96 Gros Ventre Summit 8750 9.3 11.1 84 -M 14.8 * Gunsight Pass 9820 12.3 12.0 102 17.2 16.4 105 Lewis Lake Divide 7850 26.5 29.1 91 38.3 37.0 104 Loomis Park 8240 5.4 10.1 53 17.0 18.9 90 Phillips Bench 8200 23.4 25.6 91 31.5 28.9 109 Salt River Summit 7640 6.2 7.0 89 16.0 18.0 89 Snake River Station 6920 6.3 6.0 105 24.6 24.8 99 Somsen Ranch 6800 4.9 .0 * 23.1 18.3 126 Spring Creek Divide 9000 24.6 24.7 100 24.8 25.7 96 Thumb Divide 7980 12.3 10.4 118 20.2 21.4 94 Togwotee Pass 9580 21.4 25.4 84 22.9 28.0 82 Triple Peak 8500 17.8 18.0 99 28.1 29.0 97 Two Ocean Plateau 9240 31.0 32.5 95 29.5 30.2 98 Willow Creek 8080 27.5 25.6 107 38.7 38.6 100 Younts Peak 8350 9.5 13.9 68 17.5 17.5 100 ----- ----- Basin Index (%) 94 98 MADISON HEADWATERS IN WYOMING Black Bear 8170 33.4 40.7 82 41.4 41.2 100 Canyon 7870 8.6 -M * 15.3 -M * Madison Plateau 7750 18.6 22.8 82 25.6 28.0 91 West Yellowstone 6700 -M .0 * 14.8 16.1 92 Whiskey Creek 6800 9.6 12.1 79 21.8 22.8 96 ----- ----- Basin Index (%) 81 96 YELLOWSTONE HEADWATERS IN WYOMING Beartooth Lake 9360 18.5 24.3 76 18.7 23.8 79 Canyon 7870 8.6 -M * 15.3 -M * Evening Star 9200 21.1 26.8 79 30.0 32.0 94 Fisher Creek 9100 24.6 35.9 69 29.3 37.7 78 Monument Peak 8850 15.2 21.8 70 21.4 26.1 82 Northeast Entrance 7350 .1 .6 17* 12.7 14.7 86 Parker Peak 9400 21.9 24.0 91 25.5 23.2 110 Sylvan Lake 8420 12.4 18.6 67 25.8 26.8 96 Thumb Divide 7980 12.3 10.4 118 20.2 21.4 94 Two Ocean Plateau 9240 31.0 32.5 95 29.5 30.2 98 White Mill 8700 18.8 26.8 70 20.6 25.8 80 Wolverine 7650 .1 1.9 5 15.2 14.0 109 ----- ----- Basin Index (%) 79 90 WIND RIVER Burroughs Creek 8750 7.1 -M * 13.7 -M * Castle Creek 8400 .2 .0 * 9.6 10.1 95 Cold Springs 9630 3.8 2.8 136 14.2 11.7 121 Deer Park 9700 18.1 14.6 124 24.4 22.1 110 Hobbs Park 10100 18.5 16.4 113 20.7 17.4 119 Kirwin 9550 13.9 11.8 118 18.4 15.0 123 Little Warm 9370 9.2 8.4 110 16.8 14.1 119 South Pass 9040 14.8 13.2 112 21.1 18.4 115 St. Lawrence Alt 8620 .1 -M * 13.3 -M * Togwotee Pass 9580 21.4 25.4 84 22.9 28.0 82 Townsend Creek 8700 8.7 7.8 112 16.9 14.2 119 ----- ----- Basin Index (%) 108 109 BIGHORN BASIN Bald Mtn. 9380 15.0 20.5 73 15.3 19.0 81 Bear Trap Meadow 8200 -M .6 * 11.2 11.6 97 Bone Springs Div 9350 15.2 18.0 84 14.9 18.6 80 Grave Springs 8550 4.2 7.8 54 11.6 12.6 92 Kirwin 9550 13.9 11.8 118 18.4 15.0 123 Marquette 8760 15.7 7.4 212 20.0 12.8 156 Middle Powder 7760 9.7 10.8 90 12.1 12.6 96 Owl Creek 8975 .5 .3 167* 11.2 8.8 127 Powder River Pass 9480 3.8 9.2 41 13.5 15.7 86 Shell Creek 9580 14.4 16.4 88 15.7 16.8 93 Timber Creek 7950 9.6 1.8 533 15.9 10.8 147 ----- ----- Basin Index (%) 98 104 SHOSHONE RIVER Blackwater 9780 25.3 26.2 97 26.9 26.2 103 Evening Star 9200 21.1 26.8 79 30.0 32.0 94 Marquette 8760 15.7 7.4 212 20.0 12.8 156 Sylvan Lake 8420 12.4 18.6 67 25.8 26.8 96 Sylvan Road 7120 .0 1.2 0 16.9 18.4 92 Younts Peak 8350 9.5 13.9 68 17.5 17.5 100 ----- ----- Basin Index (%) 89 103 POWDER RIVER Bear Trap Meadow 8200 -M .6 * 11.2 11.6 97 Cloud Peak Reservoir 9860 12.7 16.4 77 17.7 17.7 100 Grave Springs 8550 4.2 7.8 54 11.6 12.6 92 Hansen Sawmill 8360 1.2 2.8 43 12.3 11.2 110 Middle Powder 7760 9.7 10.8 90 12.1 12.6 96 Powder River Pass 9480 3.8 9.2 41 13.5 15.7 86 Soldier Park 8720 .3 2.6 12 12.4 11.6 107 ----- ----- Basin Index (%) 64 98 TONGUE RIVER Big Goose 7990 5.6 8.3 67 13.6 13.8 99 Bone Springs Div 9350 15.2 18.0 84 14.9 18.6 80 Burgess Junction 7880 8.2 11.2 73 14.3 14.8 97 Dome Lake 8880 -M 11.4 * 15.0 16.2 93 Little Goose 8870 8.6 10.4 83 16.1 16.2 99 Sucker Creek 8880 9.0 11.2 80 17.6 17.6 100 Tie Creek 6870 .0 1.4 0 14.0 14.4 97 ----- ----- Basin Index (%) 77 95 BELLE FOURCHE Blind Park 6890 .0 .0 * 8.3 13.6 61 Cole Canyon 5910 .1 .0 * 8.3 12.6 66 North Rapid Creek 6130 .0 .0 * 10.4 11.2 93 ----- ----- Basin Index (%) * 72 CHEYENNE RIVER BASIN Blind Park 6890 .0 .0 * 8.3 13.6 61 North Rapid Creek 6130 .0 .0 * 10.4 11.2 93 ----- ----- Basin Index (%) * 75 UPPER N. PLATTE Arapaho Ridge 10976 21.4 22.7 94 24.9 25.7 97 Blackhall Mtn 9839 35.9 32.2 111 39.9 36.3 110 Cinnabar Park 9707 18.4 18.3 101 26.8 27.5 97 Columbine 9167 13.2 16.3 81 29.1 29.6 98 Divide Peak 8730 15.7 13.9 113 27.7 25.2 110 Joe Wright 10158 22.9 22.2 103 30.2 31.0 97 Laprele Creek 8390 .9 4.4 20 13.4 15.4 87 Med Bow 10512 43.3 -M * 38.6 -M * Never Summer 10323 23.5 22.4 105 19.6 20.6 95 North French Creek 10153 30.8 32.4 95 32.7 33.0 99 Old Battle 9860 34.7 35.3 98 38.2 39.1 98 Rawah 9069 9.6 5.6 171 20.4 19.9 103 Sage Creek Basin 7850 .1 .0 * 17.7 14.9 119 Sand Lake 10098 35.0 32.2 109 34.8 29.9 116 South Brush Creek 8495 5.6 4.6 122 15.5 17.0 91 Tower 10620 44.6 47.8 93 45.1 45.2 100 Webber Springs 9260 20.4 20.2 101 29.6 30.2 98 Whiskey Park 9020 28.5 26.8 106 33.7 33.7 100 Willow Creek Pass 9523 15.1 15.0 101 17.8 16.7 107 Zirkel 9338 16.3 21.2 77 33.0 35.2 94 ----- ----- Basin Index (%) 100 101 SWEETWATER Deer Park 9700 18.1 14.6 124 24.4 22.1 110 Larsen Creek 9000 -M 1.0 * 15.9 16.1 99 South Pass 9040 14.8 13.2 112 21.1 18.4 115 ----- ----- Basin Index (%) 118 108 LOWER N. PLATTE Casper Mtn. 7920 6.0 11.2 54 16.8 17.9 94 Laprele Creek 8390 .9 4.4 20 13.4 15.4 87 Reno Hill 8430 7.4 13.5 55 16.7 19.9 84 Windy Peak 7915 3.3 3.0 110 12.6 13.6 93 ----- ----- Basin Index (%) 55 89 LARAMIE RIVER Brooklyn Lake 10250 23.4 22.3 105 30.0 25.6 117 Cinnabar Park 9707 18.4 18.3 101 26.8 27.5 97 Crow Creek 8335 .0 .0 * 12.8 13.3 96 Deadman Hill 10239 22.5 19.3 117 22.7 22.0 103 Rawah 9069 9.6 5.6 171 20.4 19.9 103 Roach 9740 12.5 16.4 76 20.3 22.2 91 Windy Peak 7915 3.3 3.0 110 12.6 13.6 93 ----- ----- Basin Index (%) 106 101 S. PLATTE Crow Creek 8335 .0 .0 * 12.8 13.3 96 ----- ----- Basin Index (%) * 96 LITTLE SNAKE RIVER Battle Mountain 7498 .2 .0 * 21.1 17.8 119 Divide Peak 8730 15.7 13.9 113 27.7 25.2 110 Elk River 8739 6.8 10.8 63 22.8 23.0 99 Elkhead Divide 8800 15.4 -M * 26.8 -M * Little Snake River 8928 23.8 21.4 111 37.7 37.2 101 Old Battle 9860 34.7 35.3 98 38.2 39.1 98 Sage Creek Basin 7850 .1 .0 * 17.7 14.9 119 Sandstone RS 8152 5.6 3.8 147 21.0 20.2 104 Whiskey Park 9020 28.5 26.8 106 33.7 33.7 100 ----- ----- Basin Index (%) 103 104 UPPER GREEN RIVER Big Sandy Opening 9080 9.9 9.6 103 16.4 15.0 109 Blind Bull Sum 8650 26.4 24.1 110 19.2 19.6 98 East Rim Divide 7930 -M 4.8 * 12.8 12.8 100 Elkhart Park G.S. 9400 7.5 10.3 73 13.9 14.0 99 Gros Ventre Summit 8750 9.3 11.1 84 -M 14.8 * Gunsight Pass 9820 12.3 12.0 102 17.2 16.4 105 Indian Creek 9425 23.0 21.2 108 23.2 21.9 106 Kendall R.S. 7740 .2 2.2 9 14.9 14.8 101 Larsen Creek 9000 -M 1.0 * 15.9 16.1 99 Loomis Park 8240 5.4 10.1 53 17.0 18.9 90 New Fork Lake 8340 .4 4.1 10 -M 12.4 * Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 3.3 6.2 53 15.3 15.3 100 Spring Creek Divide 9000 24.6 24.7 100 24.8 25.7 96 Triple Peak 8500 17.8 18.0 99 28.1 29.0 97 ----- ----- Basin Index (%) 91 100 LOWER GREEN RIVER Blacks Fork Jct 8869 1.1 1.0 110 15.7 14.4 109 Buck Pasture 9632 10.9 -M * 19.3 -M * EF Blacks Fork GS 9360 3.4 5.8 59 12.0 13.6 88 Hams Fork 7840 -M .2 * 13.4 12.1 111 Henrys Fork 10182 -M -M * 15.6 -M * Hewinta 9500 3.6 3.5 103 16.8 16.2 104 Hickerson Park 9122 .6 1.7 35 15.6 12.5 125 Hole-in-Rock 9168 -M .9 * 12.6 12.6 100 Indian Creek 9425 23.0 21.2 108 23.2 21.9 106 Kelley R.S. 8180 10.9 9.2 118 20.4 18.2 112 Spirit Lk 10235 9.8 12.3 80 21.4 19.9 108 Steel Creek Park 10158 15.8 17.2 92 20.4 19.4 105 ----- ----- Basin Index (%) 95 107 UPPER BEAR RIVER Bear River RS 8777 .1 .0 * 16.1 13.8 117 Bug Lake 7987 13.9 13.0 107 25.2 19.5 129 Burts Miller Ranch 8000 .1 .0 * 13.2 8.7 152 Chalk Creek #1 9171 19.3 21.2 91 28.1 26.2 107 Giveout 6930 -M .0 * 14.4 13.8 104 Hayden Fork 9130 4.7 7.6 62 25.8 23.5 110 Kelley R.S. 8180 10.9 9.2 118 20.4 18.2 112 Lily Lake 9133 8.0 7.8 103 18.0 18.6 97 Monte Cristo 8932 26.4 21.4 123 32.3 28.1 115 Salt River Summit 7640 6.2 7.0 89 16.0 18.0 89 Spring Creek Divide 9000 24.6 24.7 100 24.8 25.7 96 Trial Lake 9992 26.8 21.6 124 30.0 25.1 120 ----- ----- Basin Index (%) 106 110 ----------------------------------------------------------------------------- -M = Missing data * = Data may not provide a valid measure of conditions. Units = inches for the Current and Median (or Average) Snow Water Equivalent and Total Precipitation values If the Basin Index (%) 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 Percent of Median (or Average) represents the snow water equivalent found at selected SNOTEL sites in or near the basin compared to the Median (or Average) value for those sites on this day. The TOTAL PRECIPITATION Percent of Median (or Average) represents the total precipitation (beginning October 1st) found at selected SNOTEL sites in or near the basin compared to the Median (or Average) value for those sites on this day. 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 medians (or averages) 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. ---------------------------------------------------------------------------- -M = Missing data * = Data may not provide a valid measure of conditions. Units = inches for the Current and Normal Snow Water Equivalent and Total Precipitation values If the Basin Index (%) 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 Percent of Median represents the snow water equivalent found at selected SNOTEL sites in or near the basin compared to the Median value for those sites on this day. The TOTAL PRECIPITATION Percent of Average represents the total precipitation (beginning October 1st) found at selected SNOTEL sites in or near the basin compared to the Average value for those sites on this day. Contact your state water supply staff for assistance. Medians and averages are calculated for the period 1981-2010. 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 for the day is less than 10% of the maximum median value for the year. * Basin - More than half of the sites within the basin are flagged with *, preventing the calculation of a meaningful basin index. The basin index is calculated as the sum of the valid current values divided by the sum of the corresponding medians (for snow water equivalent) or averages (for precipitation) and the resulting fraction multiplied by 100.