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 FRIDAY: APRIL 5 , 2024 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Median Med ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 15.7 16.4 96 20.5 19.9 103 Blind Bull Sum 8650 24.4 23.7 103 16.7 17.5 95 Cottonwood Creek 7670 20.7 21.2 98 25.4 25.0 102 East Rim Divide 7930 8.9 10.5 85 11.1 11.0 101 Grand Targhee 9260 38.3 42.0 91 26.1 30.1 87 Granite Creek 6770 15.6 15.2 103 16.6 17.9 93 Grassy Lake 7265 27.4 32.2 85 33.9 34.4 99 Gros Ventre Summit 8750 11.7 12.8 91 13.4 12.0 112 Gunsight Pass 9820 13.0 12.7 102 14.7 13.5 109 Lewis Lake Divide 7850 31.2 30.3 103 35.0 32.2 109 Loomis Park 8240 12.0 15.3 78 15.2 16.6 92 Phillips Bench 8200 24.1 26.2 92 28.0 26.4 106 Salt River Summit 7640 15.8 13.2 120 15.3 15.9 96 Snake River Station 6920 15.5 16.6 93 22.7 22.0 103 Somsen Ranch 6800 17.3 11.1 156 21.4 16.4 130 Spring Creek Divide 9000 -M 24.8 * -M 23.3 * Thumb Divide 7980 17.0 16.2 105 18.1 17.2 105 Togwotee Pass 9580 19.7 23.2 85 19.5 24.4 80 Triple Peak 8500 24.0 22.9 105 23.5 24.7 95 Two Ocean Plateau 9240 27.5 28.6 96 26.2 25.9 101 Willow Creek 8080 34.5 29.8 116 34.4 32.6 106 Younts Peak 8350 14.2 14.3 99 15.2 14.6 104 ----- ----- Basin Index (%) 99 101 MADISON HEADWATERS IN WYOMING Black Bear 8170 29.5 38.1 77 37.3 36.8 101 Canyon 7870 10.8 -M * 13.7 -M * Madison Plateau 7750 20.3 22.4 91 23.4 24.4 96 West Yellowstone 6700 8.6 10.0 86 13.6 13.8 99 Whiskey Creek 6800 13.7 15.4 89 19.9 19.3 103 ----- ----- Basin Index (%) 84 100 YELLOWSTONE HEADWATERS IN WYOMING Beartooth Lake 9360 14.8 21.3 69 14.4 19.7 73 Canyon 7870 10.8 -M * 13.7 -M * Evening Star 9200 20.4 24.7 83 26.0 27.4 95 Fisher Creek 9100 22.5 32.4 69 25.2 32.0 79 Monument Peak 8850 14.1 20.2 70 17.7 21.0 84 Northeast Entrance 7350 5.6 8.9 63 10.2 12.8 80 Parker Peak 9400 19.7 20.6 96 21.4 19.6 109 Sylvan Lake 8420 15.1 19.4 78 22.3 22.9 97 Thumb Divide 7980 17.0 16.2 105 18.1 17.2 105 Two Ocean Plateau 9240 27.5 28.6 96 26.2 25.9 101 White Mill 8700 16.8 23.4 72 17.7 22.2 80 Wolverine 7650 8.8 10.2 86 13.1 12.4 106 ----- ----- Basin Index (%) 81 91 WIND RIVER Burroughs Creek 8750 11.0 -M * 11.9 -M * Castle Creek 8400 6.6 6.4 103 8.2 8.3 99 Cold Springs 9630 8.3 7.0 119 11.7 9.0 130 Deer Park 9700 18.6 14.8 126 21.2 17.6 120 Hobbs Park 10100 16.4 14.2 115 16.9 13.3 127 Kirwin 9550 13.1 10.4 126 15.8 11.8 134 Little Warm 9370 10.3 10.0 103 13.4 11.7 115 South Pass 9040 15.2 14.6 104 17.9 15.4 116 St. Lawrence Alt 8620 6.2 -M * 10.4 -M * Togwotee Pass 9580 19.7 23.2 85 19.5 24.4 80 Townsend Creek 8700 10.2 9.2 111 14.2 11.0 129 ----- ----- Basin Index (%) 108 113 BIGHORN BASIN Bald Mtn. 9380 12.5 19.2 65 12.0 15.7 76 Bear Trap Meadow 8200 4.3 5.8 74 8.1 8.2 99 Bone Springs Div 9350 12.6 17.0 74 11.7 15.2 77 Grave Springs 8550 4.9 8.2 60 7.4 9.0 82 Kirwin 9550 13.1 10.4 126 15.8 11.8 134 Marquette 8760 11.6 7.4 157 14.8 9.2 161 Middle Powder 7760 5.9 10.7 55 7.8 9.6 81 Owl Creek 8975 5.3 5.6 95 7.3 6.0 122 Powder River Pass 9480 6.0 10.3 58 10.0 12.3 81 Shell Creek 9580 11.5 15.0 77 12.2 13.6 90 Timber Creek 7950 7.9 4.8 165 12.1 7.8 155 ----- ----- Basin Index (%) 84 101 SHOSHONE RIVER Blackwater 9780 22.3 22.6 99 23.5 21.6 109 Evening Star 9200 20.4 24.7 83 26.0 27.4 95 Marquette 8760 11.6 7.4 157 14.8 9.2 161 Sylvan Lake 8420 15.1 19.4 78 22.3 22.9 97 Sylvan Road 7120 6.2 10.6 58 15.0 16.0 94 Younts Peak 8350 14.2 14.3 99 15.2 14.6 104 ----- ----- Basin Index (%) 91 105 POWDER RIVER Bear Trap Meadow 8200 4.3 5.8 74 8.1 8.2 99 Cloud Peak Reservoir 9860 11.3 14.4 78 13.4 13.2 102 Grave Springs 8550 4.9 8.2 60 7.4 9.0 82 Hansen Sawmill 8360 5.3 6.1 87 8.5 8.2 104 Middle Powder 7760 5.9 10.7 55 7.8 9.6 81 Powder River Pass 9480 6.0 10.3 58 10.0 12.3 81 Soldier Park 8720 4.1 7.6 54 9.5 9.2 103 ----- ----- Basin Index (%) 66 93 TONGUE RIVER Big Goose 7990 5.7 8.6 66 9.8 9.8 100 Bone Springs Div 9350 12.6 17.0 74 11.7 15.2 77 Burgess Junction 7880 7.2 10.7 67 10.9 11.6 94 Dome Lake 8880 -M 11.7 * 10.6 12.6 84 Little Goose 8870 7.4 9.5 78 11.3 11.8 96 Sucker Creek 8880 9.0 11.8 76 13.0 13.7 95 Tie Creek 6870 1.6 4.8 33 11.5 10.6 108 ----- ----- Basin Index (%) 70 92 BELLE FOURCHE Blind Park 6890 .0 7.0 0 -M 10.6 * Cole Canyon 5910 1.0 5.2 19 5.6 9.1 62 North Rapid Creek 6130 3.8 6.2 61 6.7 8.6 78 ----- ----- Basin Index (%) 26 69 CHEYENNE RIVER BASIN Blind Park 6890 .0 7.0 0 -M 10.6 * North Rapid Creek 6130 3.8 6.2 61 6.7 8.6 78 ----- ----- Basin Index (%) 29 78 UPPER N. PLATTE Arapaho Ridge 10976 21.2 22.0 96 21.1 21.3 99 Blackhall Mtn 9839 30.5 30.4 100 34.2 29.2 117 Cinnabar Park 9707 19.9 20.5 97 22.5 23.5 96 Columbine 9167 26.7 21.8 122 25.3 23.8 106 Divide Peak 8730 22.1 19.6 113 24.2 21.3 114 Joe Wright 10158 18.7 20.2 93 22.9 25.7 89 Laprele Creek 8390 6.7 9.4 71 10.4 11.6 90 Med Bow 10512 37.2 -M * 32.3 -M * Never Summer 10323 17.2 20.2 85 14.5 16.7 87 North French Creek 10153 26.6 28.4 94 26.4 26.4 100 Old Battle 9860 32.7 31.1 105 33.2 34.3 97 Rawah 9069 11.6 10.5 110 15.9 15.4 103 Sage Creek Basin 7850 15.5 12.2 127 15.5 12.8 121 Sand Lake 10098 29.5 27.0 109 28.2 24.8 114 South Brush Creek 8495 10.3 11.6 89 12.1 13.6 89 Tower 10620 40.5 42.9 94 37.5 39.2 96 Webber Springs 9260 23.4 22.2 105 25.9 25.3 102 Whiskey Park 9020 31.7 27.0 117 29.5 27.2 108 Willow Creek Pass 9523 14.1 13.0 108 14.8 13.6 109 Zirkel 9338 25.8 27.6 93 28.4 30.4 93 ----- ----- Basin Index (%) 102 101 SWEETWATER Deer Park 9700 18.6 14.8 126 21.2 17.6 120 Larsen Creek 9000 9.6 10.0 96 14.8 13.4 110 South Pass 9040 15.2 14.6 104 17.9 15.4 116 ----- ----- Basin Index (%) 110 116 LOWER N. PLATTE Casper Mtn. 7920 9.2 13.5 68 13.7 13.7 100 Laprele Creek 8390 6.7 9.4 71 10.4 11.6 90 Reno Hill 8430 9.4 14.0 67 13.3 14.5 92 Windy Peak 7915 8.3 8.0 104 9.9 10.2 97 ----- ----- Basin Index (%) 75 95 LARAMIE RIVER Brooklyn Lake 10250 23.0 21.6 106 24.7 21.4 115 Cinnabar Park 9707 19.9 20.5 97 22.5 23.5 96 Crow Creek 8335 5.3 6.2 85 10.0 10.5 95 Deadman Hill 10239 19.6 16.0 122 18.2 17.7 103 Rawah 9069 11.6 10.5 110 15.9 15.4 103 Roach 9740 14.6 15.4 95 17.4 19.0 92 Windy Peak 7915 8.3 8.0 104 9.9 10.2 97 ----- ----- Basin Index (%) 104 101 S. PLATTE Crow Creek 8335 5.3 6.2 85 10.0 10.5 95 ----- ----- Basin Index (%) 85 95 LITTLE SNAKE RIVER Battle Mountain 7498 11.6 10.2 114 18.5 14.6 127 Divide Peak 8730 22.1 19.6 113 24.2 21.3 114 Elk River 8739 18.9 17.5 108 19.8 19.0 104 Elkhead Divide 8800 23.4 -M * 23.8 -M * Little Snake River 8928 29.2 26.6 110 33.1 31.6 105 Old Battle 9860 32.7 31.1 105 33.2 34.3 97 Sage Creek Basin 7850 15.5 12.2 127 15.5 12.8 121 Sandstone RS 8152 17.8 12.8 139 18.1 17.3 105 Whiskey Park 9020 31.7 27.0 117 29.5 27.2 108 ----- ----- Basin Index (%) 114 108 UPPER GREEN RIVER Big Sandy Opening 9080 14.1 13.0 108 15.0 12.7 118 Blind Bull Sum 8650 24.4 23.7 103 16.7 17.5 95 East Rim Divide 7930 8.9 10.5 85 11.1 11.0 101 Elkhart Park G.S. 9400 11.6 12.4 94 12.5 12.6 99 Gros Ventre Summit 8750 11.7 12.8 91 13.4 12.0 112 Gunsight Pass 9820 13.0 12.7 102 14.7 13.5 109 Indian Creek 9425 23.6 23.5 100 20.4 19.6 104 Kendall R.S. 7740 9.0 11.4 79 12.9 13.0 99 Larsen Creek 9000 9.6 10.0 96 14.8 13.4 110 Loomis Park 8240 12.0 15.3 78 15.2 16.6 92 New Fork Lake 8340 8.5 10.5 81 -M 10.6 * Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 10.3 12.8 80 12.7 13.8 92 Spring Creek Divide 9000 -M 24.8 * -M 23.3 * Triple Peak 8500 24.0 22.9 105 23.5 24.7 95 ----- ----- Basin Index (%) 94 101 LOWER GREEN RIVER Blacks Fork Jct 8869 11.1 8.8 126 14.0 12.2 115 Buck Pasture 9632 15.8 -M * 16.1 -M * EF Blacks Fork GS 9360 11.2 11.2 100 10.1 10.8 94 Hams Fork 7840 -M 11.0 * 11.5 11.0 105 Henrys Fork 10182 -M -M * 13.2 -M * Hewinta 9500 12.2 10.4 117 14.9 13.4 111 Hickerson Park 9122 11.2 7.3 153 13.6 10.4 131 Hole-in-Rock 9168 8.9 7.0 127 11.1 9.8 113 Indian Creek 9425 23.6 23.5 100 20.4 19.6 104 Kelley R.S. 8180 16.7 14.8 113 17.8 15.9 112 Spirit Lk 10235 15.4 13.8 112 19.0 16.9 112 Steel Creek Park 10158 15.7 14.6 108 17.8 16.2 110 ----- ----- Basin Index (%) 113 110 UPPER BEAR RIVER Bear River RS 8777 12.2 8.9 137 14.6 11.8 124 Bug Lake 7987 22.4 18.4 122 23.1 18.0 128 Burts Miller Ranch 8000 8.9 5.1 175 12.6 7.7 164 Chalk Creek #1 9171 24.7 22.8 108 25.5 22.4 114 Giveout 6930 11.2 7.6 147 13.3 11.7 114 Hayden Fork 9130 19.1 14.7 130 23.0 20.2 114 Kelley R.S. 8180 16.7 14.8 113 17.8 15.9 112 Lily Lake 9133 14.2 12.4 115 15.9 14.8 107 Monte Cristo 8932 30.1 27.1 111 28.5 26.1 109 Salt River Summit 7640 15.8 13.2 120 15.3 15.9 96 Spring Creek Divide 9000 -M 24.8 * -M 23.3 * Trial Lake 9992 29.0 21.5 135 26.8 22.3 120 ----- ----- Basin Index (%) 123 116 ----------------------------------------------------------------------------- -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.