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 SUNDAY: APRIL 14 , 2024 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Median Med ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 13.8 14.8 93 20.8 20.6 101 Blind Bull Sum 8650 24.3 24.5 99 16.8 17.8 94 Cottonwood Creek 7670 20.0 20.4 98 26.5 26.0 102 East Rim Divide 7930 6.7 9.8 68 11.2 11.4 98 Grand Targhee 9260 40.2 45.5 88 31.5 33.2 95 Granite Creek 6770 14.2 13.4 106 16.7 18.7 89 Grassy Lake 7265 27.8 32.3 86 35.1 35.8 98 Gros Ventre Summit 8750 11.7 12.8 91 13.8 12.6 110 Gunsight Pass 9820 13.3 12.7 105 15.2 14.4 106 Lewis Lake Divide 7850 30.9 32.2 96 35.8 33.4 107 Loomis Park 8240 11.1 14.6 76 15.4 17.0 91 Phillips Bench 8200 24.2 26.0 93 28.4 26.9 106 Salt River Summit 7640 14.3 11.8 121 15.4 16.4 94 Snake River Station 6920 13.9 15.0 93 23.2 22.8 102 Somsen Ranch 6800 14.9 9.4 159 21.9 16.8 130 Spring Creek Divide 9000 24.6 25.2 98 22.5 24.0 94 Thumb Divide 7980 16.8 16.0 105 18.5 18.3 101 Togwotee Pass 9580 20.2 24.0 84 20.4 25.0 82 Triple Peak 8500 22.7 22.2 102 23.9 25.6 93 Two Ocean Plateau 9240 28.5 31.0 92 26.8 27.4 98 Willow Creek 8080 34.2 28.2 121 35.4 34.2 104 Younts Peak 8350 14.4 14.4 100 15.5 15.2 102 ----- ----- Basin Index (%) 97 99 MADISON HEADWATERS IN WYOMING Black Bear 8170 32.8 38.5 85 38.4 37.7 102 Canyon 7870 10.8 -M * 14.0 -M * Madison Plateau 7750 20.5 23.0 89 24.0 25.3 95 West Yellowstone 6700 7.2 8.0 90 13.8 14.0 99 Whiskey Creek 6800 13.5 15.0 90 20.2 20.8 97 ----- ----- Basin Index (%) 88 99 YELLOWSTONE HEADWATERS IN WYOMING Beartooth Lake 9360 15.8 22.4 71 15.3 20.6 74 Canyon 7870 10.8 -M * 14.0 -M * Evening Star 9200 20.4 25.7 79 26.9 28.8 93 Fisher Creek 9100 22.8 34.2 67 26.2 34.0 77 Monument Peak 8850 14.2 21.4 66 18.5 22.8 81 Northeast Entrance 7350 4.2 8.0 52 10.7 13.4 80 Parker Peak 9400 21.0 22.6 93 22.6 20.6 110 Sylvan Lake 8420 15.5 19.8 78 23.5 24.0 98 Thumb Divide 7980 16.8 16.0 105 18.5 18.3 101 Two Ocean Plateau 9240 28.5 31.0 92 26.8 27.4 98 White Mill 8700 17.4 25.0 70 18.3 23.4 78 Wolverine 7650 7.2 8.4 86 13.4 12.8 105 ----- ----- Basin Index (%) 78 90 WIND RIVER Burroughs Creek 8750 9.7 -M * 12.0 -M * Castle Creek 8400 4.6 5.8 79 8.2 9.0 91 Cold Springs 9630 6.6 6.9 96 11.6 9.7 120 Deer Park 9700 17.9 15.2 118 21.2 18.9 112 Hobbs Park 10100 16.2 15.4 105 17.0 14.2 120 Kirwin 9550 12.5 11.1 113 16.0 12.5 128 Little Warm 9370 10.0 10.0 100 13.6 12.0 113 South Pass 9040 14.7 15.8 93 18.0 16.4 110 St. Lawrence Alt 8620 4.7 -M * 10.4 -M * Togwotee Pass 9580 20.2 24.0 84 20.4 25.0 82 Townsend Creek 8700 9.5 9.8 97 14.2 12.7 112 ----- ----- Basin Index (%) 98 108 BIGHORN BASIN Bald Mtn. 9380 14.3 19.5 73 13.6 16.4 83 Bear Trap Meadow 8200 5.7 5.2 110 9.8 9.4 104 Bone Springs Div 9350 13.6 18.0 76 12.7 16.4 77 Grave Springs 8550 7.6 8.8 86 10.4 10.6 98 Kirwin 9550 12.5 11.1 113 16.0 12.5 128 Marquette 8760 11.8 7.8 151 15.4 10.0 154 Middle Powder 7760 11.4 11.4 100 10.7 10.2 105 Owl Creek 8975 4.0 5.2 77 7.8 6.6 118 Powder River Pass 9480 6.5 10.5 62 11.9 13.5 88 Shell Creek 9580 13.2 15.9 83 13.8 14.2 97 Timber Creek 7950 6.9 5.2 133 12.4 8.3 149 ----- ----- Basin Index (%) 91 105 SHOSHONE RIVER Blackwater 9780 22.6 24.2 93 24.0 23.2 103 Evening Star 9200 20.4 25.7 79 26.9 28.8 93 Marquette 8760 11.8 7.8 151 15.4 10.0 154 Sylvan Lake 8420 15.5 19.8 78 23.5 24.0 98 Sylvan Road 7120 3.2 10.2 31 15.4 16.6 93 Younts Peak 8350 14.4 14.4 100 15.5 15.2 102 ----- ----- Basin Index (%) 86 102 POWDER RIVER Bear Trap Meadow 8200 5.7 5.2 110 9.8 9.4 104 Cloud Peak Reservoir 9860 11.7 15.4 76 14.6 14.4 101 Grave Springs 8550 7.6 8.8 86 10.4 10.6 98 Hansen Sawmill 8360 4.8 6.1 79 9.5 9.0 106 Middle Powder 7760 11.4 11.4 100 10.7 10.2 105 Powder River Pass 9480 6.5 10.5 62 11.9 13.5 88 Soldier Park 8720 3.2 6.2 52 9.9 10.1 98 ----- ----- Basin Index (%) 80 99 TONGUE RIVER Big Goose 7990 6.5 8.9 73 11.2 10.7 105 Bone Springs Div 9350 13.6 18.0 76 12.7 16.4 77 Burgess Junction 7880 8.9 11.4 78 12.6 12.8 98 Dome Lake 8880 -M 11.8 * 11.9 13.6 88 Little Goose 8870 8.4 10.4 81 13.0 12.9 101 Sucker Creek 8880 10.3 12.7 81 15.2 14.9 102 Tie Creek 6870 .6 4.2 14 12.8 11.5 111 ----- ----- Basin Index (%) 74 96 BELLE FOURCHE Blind Park 6890 .0 4.8 0 7.0 11.9 59 Cole Canyon 5910 .7 3.4 21 7.4 9.6 77 North Rapid Creek 6130 3.7 5.6 66 8.8 9.6 92 ----- ----- Basin Index (%) 32 75 CHEYENNE RIVER BASIN Blind Park 6890 .0 4.8 0 7.0 11.9 59 North Rapid Creek 6130 3.7 5.6 66 8.8 9.6 92 ----- ----- Basin Index (%) 36 73 UPPER N. PLATTE Arapaho Ridge 10976 21.6 23.0 94 22.0 22.6 97 Blackhall Mtn 9839 31.3 30.8 102 35.3 30.4 116 Cinnabar Park 9707 20.0 20.9 96 23.4 24.1 97 Columbine 9167 25.0 21.3 117 26.4 26.0 102 Divide Peak 8730 21.1 20.1 105 24.7 22.0 112 Joe Wright 10158 19.1 21.6 88 23.9 26.4 91 Laprele Creek 8390 7.1 8.8 81 11.7 12.2 96 Med Bow 10512 39.8 -M * 34.0 -M * Never Summer 10323 19.4 20.9 93 14.8 17.8 83 North French Creek 10153 26.9 31.4 86 27.6 28.2 98 Old Battle 9860 33.7 32.2 105 34.5 35.4 97 Rawah 9069 10.5 10.4 101 16.4 16.3 101 Sage Creek Basin 7850 12.2 10.4 117 15.6 13.3 117 Sand Lake 10098 30.6 29.6 103 29.2 26.0 112 South Brush Creek 8495 9.2 10.3 89 12.4 14.1 88 Tower 10620 42.0 44.7 94 40.7 40.8 100 Webber Springs 9260 23.1 21.4 108 26.8 26.0 103 Whiskey Park 9020 31.4 26.6 118 30.7 28.0 110 Willow Creek Pass 9523 14.1 14.2 99 15.0 14.4 104 Zirkel 9338 24.6 25.4 97 29.4 31.2 94 ----- ----- Basin Index (%) 100 101 SWEETWATER Deer Park 9700 17.9 15.2 118 21.2 18.9 112 Larsen Creek 9000 8.1 8.3 98 14.9 14.0 106 South Pass 9040 14.7 15.8 93 18.0 16.4 110 ----- ----- Basin Index (%) 104 110 LOWER N. PLATTE Casper Mtn. 7920 11.5 13.8 83 15.8 14.5 109 Laprele Creek 8390 7.1 8.8 81 11.7 12.2 96 Reno Hill 8430 10.5 14.4 73 15.2 16.4 93 Windy Peak 7915 8.4 7.2 117 10.7 10.8 99 ----- ----- Basin Index (%) 85 99 LARAMIE RIVER Brooklyn Lake 10250 23.9 22.4 107 25.8 22.7 114 Cinnabar Park 9707 20.0 20.9 96 23.4 24.1 97 Crow Creek 8335 4.2 5.0 84 10.5 11.0 95 Deadman Hill 10239 20.4 16.5 124 18.5 18.6 99 Rawah 9069 10.5 10.4 101 16.4 16.3 101 Roach 9740 13.9 15.9 87 17.7 19.9 89 Windy Peak 7915 8.4 7.2 117 10.7 10.8 99 ----- ----- Basin Index (%) 103 100 S. PLATTE Crow Creek 8335 4.2 5.0 84 10.5 11.0 95 ----- ----- Basin Index (%) 84 95 LITTLE SNAKE RIVER Battle Mountain 7498 8.6 7.8 110 18.9 15.8 120 Divide Peak 8730 21.1 20.1 105 24.7 22.0 112 Elk River 8739 17.6 16.2 109 20.7 20.0 104 Elkhead Divide 8800 22.2 -M * 24.6 -M * Little Snake River 8928 28.8 25.7 112 34.5 32.9 105 Old Battle 9860 33.7 32.2 105 34.5 35.4 97 Sage Creek Basin 7850 12.2 10.4 117 15.6 13.3 117 Sandstone RS 8152 15.5 12.1 128 18.4 18.4 100 Whiskey Park 9020 31.4 26.6 118 30.7 28.0 110 ----- ----- Basin Index (%) 112 107 UPPER GREEN RIVER Big Sandy Opening 9080 13.4 13.5 99 15.2 13.5 113 Blind Bull Sum 8650 24.3 24.5 99 16.8 17.8 94 East Rim Divide 7930 6.7 9.8 68 11.2 11.4 98 Elkhart Park G.S. 9400 11.1 13.0 85 12.9 13.0 99 Gros Ventre Summit 8750 11.7 12.8 91 13.8 12.6 110 Gunsight Pass 9820 13.3 12.7 105 15.2 14.4 106 Indian Creek 9425 22.6 23.6 96 20.6 19.8 104 Kendall R.S. 7740 7.5 10.0 75 13.2 13.3 99 Larsen Creek 9000 8.1 8.3 98 14.9 14.0 106 Loomis Park 8240 11.1 14.6 76 15.4 17.0 91 New Fork Lake 8340 7.1 9.9 72 -M 10.8 * Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 8.7 11.8 74 12.8 14.0 91 Spring Creek Divide 9000 24.6 25.2 98 22.5 24.0 94 Triple Peak 8500 22.7 22.2 102 23.9 25.6 93 ----- ----- Basin Index (%) 91 99 LOWER GREEN RIVER Blacks Fork Jct 8869 9.9 7.5 132 14.3 12.4 115 Buck Pasture 9632 15.2 -M * 16.6 -M * EF Blacks Fork GS 9360 10.0 12.0 83 10.3 11.4 90 Hams Fork 7840 -M 9.2 * 11.5 11.2 103 Henrys Fork 10182 -M -M * 13.7 -M * Hewinta 9500 10.4 9.7 107 15.2 13.8 110 Hickerson Park 9122 8.3 6.7 124 13.8 10.8 128 Hole-in-Rock 9168 7.6 6.8 112 11.1 10.4 107 Indian Creek 9425 22.6 23.6 96 20.6 19.8 104 Kelley R.S. 8180 15.6 14.4 108 18.0 16.4 110 Spirit Lk 10235 14.9 13.8 108 19.2 18.3 105 Steel Creek Park 10158 15.8 15.6 101 18.1 16.9 107 ----- ----- Basin Index (%) 105 108 UPPER BEAR RIVER Bear River RS 8777 9.1 6.9 132 14.7 12.3 120 Bug Lake 7987 21.0 18.4 114 23.5 18.5 127 Burts Miller Ranch 8000 6.2 2.5 248 12.5 8.2 152 Chalk Creek #1 9171 24.0 23.7 101 25.8 23.8 108 Giveout 6930 8.4 5.0 168 13.4 12.8 105 Hayden Fork 9130 15.7 14.2 111 23.5 21.2 111 Kelley R.S. 8180 15.6 14.4 108 18.0 16.4 110 Lily Lake 9133 12.0 12.6 95 16.2 16.0 101 Monte Cristo 8932 30.0 27.3 110 29.6 26.4 112 Salt River Summit 7640 14.3 11.8 121 15.4 16.4 94 Spring Creek Divide 9000 24.6 25.2 98 22.5 24.0 94 Trial Lake 9992 29.4 22.2 132 27.3 22.6 121 ----- ----- Basin Index (%) 114 111 ----------------------------------------------------------------------------- -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.