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 THURSDAY: MARCH 21 , 2024 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Median Med ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 15.0 16.2 93 18.9 18.6 102 Blind Bull Sum 8650 22.0 22.3 99 15.3 16.6 92 Cottonwood Creek 7670 19.6 19.8 99 23.7 22.6 105 East Rim Divide 7930 8.2 10.0 82 9.8 10.3 95 Grand Targhee 9260 34.3 37.2 92 25.0 28.0 89 Granite Creek 6770 13.9 15.8 88 14.7 16.9 87 Grassy Lake 7265 26.4 29.8 89 32.0 32.0 100 Gros Ventre Summit 8750 10.7 11.4 94 11.8 11.1 106 Gunsight Pass 9820 11.6 12.1 96 12.9 12.7 102 Lewis Lake Divide 7850 28.8 29.0 99 32.8 29.6 111 Loomis Park 8240 11.5 14.2 81 13.3 15.6 85 Phillips Bench 8200 23.0 23.6 97 25.5 24.0 106 Salt River Summit 7640 14.4 12.3 117 13.8 13.8 100 Snake River Station 6920 15.5 16.5 94 21.6 19.8 109 Somsen Ranch 6800 16.3 11.5 142 19.8 14.7 135 Spring Creek Divide 9000 21.1 22.6 93 20.3 22.0 92 Thumb Divide 7980 15.7 14.8 106 16.5 15.5 106 Togwotee Pass 9580 17.6 21.6 81 17.4 22.6 77 Triple Peak 8500 22.2 21.8 102 22.5 23.2 97 Two Ocean Plateau 9240 24.5 26.5 92 23.7 23.5 101 Willow Creek 8080 31.4 27.0 116 31.2 30.0 104 Younts Peak 8350 13.1 13.6 96 13.9 13.2 105 ----- ----- Basin Index (%) 97 100 MADISON HEADWATERS IN WYOMING Black Bear 8170 30.6 36.2 85 34.4 33.4 103 Canyon 7870 9.8 -M * 12.5 -M * Madison Plateau 7750 18.6 20.6 90 21.4 22.4 96 West Yellowstone 6700 8.1 10.2 79 12.5 13.0 96 Whiskey Creek 6800 12.2 14.4 85 18.1 17.6 103 ----- ----- Basin Index (%) 85 100 YELLOWSTONE HEADWATERS IN WYOMING Beartooth Lake 9360 13.7 20.0 68 13.3 18.3 73 Canyon 7870 9.8 -M * 12.5 -M * Evening Star 9200 19.0 23.7 80 24.4 25.8 95 Fisher Creek 9100 20.1 29.8 67 22.6 29.5 77 Monument Peak 8850 12.9 18.8 69 15.9 19.3 82 Northeast Entrance 7350 4.8 9.9 48 8.9 11.9 75 Parker Peak 9400 18.2 19.3 94 19.8 18.4 108 Sylvan Lake 8420 14.1 18.6 76 20.6 20.6 100 Thumb Divide 7980 15.7 14.8 106 16.5 15.5 106 Two Ocean Plateau 9240 24.5 26.5 92 23.7 23.5 101 White Mill 8700 14.8 21.6 69 15.8 21.0 75 Wolverine 7650 8.8 10.6 83 12.4 11.2 111 ----- ----- Basin Index (%) 78 90 WIND RIVER Burroughs Creek 8750 11.2 -M * 10.7 -M * Castle Creek 8400 6.2 7.1 87 7.1 7.8 91 Cold Springs 9630 8.0 6.4 125 10.7 7.8 137 Deer Park 9700 15.3 12.8 120 17.8 16.2 110 Hobbs Park 10100 15.4 12.2 126 15.7 11.0 143 Kirwin 9550 12.3 9.4 131 14.7 10.3 143 Little Warm 9370 9.0 9.1 99 11.9 11.0 108 South Pass 9040 13.5 13.4 101 15.5 13.7 113 St. Lawrence Alt 8620 5.8 -M * 9.4 -M * Togwotee Pass 9580 17.6 21.6 81 17.4 22.6 77 Townsend Creek 8700 9.3 8.1 115 12.8 9.0 142 ----- ----- Basin Index (%) 106 113 BIGHORN BASIN Bald Mtn. 9380 11.4 16.4 70 10.9 14.2 77 Bear Trap Meadow 8200 3.6 5.8 62 6.6 7.2 92 Bone Springs Div 9350 10.9 14.6 75 10.5 13.4 78 Grave Springs 8550 3.7 7.8 47 6.1 8.4 73 Kirwin 9550 12.3 9.4 131 14.7 10.3 143 Marquette 8760 10.3 6.2 166 13.2 7.7 171 Middle Powder 7760 4.7 9.4 50 6.6 8.8 75 Owl Creek 8975 5.1 4.8 106 6.6 5.2 127 Powder River Pass 9480 5.5 9.9 56 9.1 11.2 81 Shell Creek 9580 10.3 13.1 79 11.1 12.0 92 Timber Creek 7950 7.1 4.1 173 11.3 6.6 171 ----- ----- Basin Index (%) 84 102 SHOSHONE RIVER Blackwater 9780 20.0 20.4 98 21.2 19.7 108 Evening Star 9200 19.0 23.7 80 24.4 25.8 95 Marquette 8760 10.3 6.2 166 13.2 7.7 171 Sylvan Lake 8420 14.1 18.6 76 20.6 20.6 100 Sylvan Road 7120 7.6 11.3 67 14.4 15.1 95 Younts Peak 8350 13.1 13.6 96 13.9 13.2 105 ----- ----- Basin Index (%) 90 105 POWDER RIVER Bear Trap Meadow 8200 3.6 5.8 62 6.6 7.2 92 Cloud Peak Reservoir 9860 10.6 13.2 80 12.3 11.6 106 Grave Springs 8550 3.7 7.8 47 6.1 8.4 73 Hansen Sawmill 8360 4.6 5.8 79 7.6 7.6 100 Middle Powder 7760 4.7 9.4 50 6.6 8.8 75 Powder River Pass 9480 5.5 9.9 56 9.1 11.2 81 Soldier Park 8720 3.6 5.9 61 8.5 8.0 106 ----- ----- Basin Index (%) 63 90 TONGUE RIVER Big Goose 7990 5.2 7.3 71 9.0 8.7 103 Bone Springs Div 9350 10.9 14.6 75 10.5 13.4 78 Burgess Junction 7880 6.2 9.5 65 9.8 10.4 94 Dome Lake 8880 -M 10.2 * 9.3 11.1 84 Little Goose 8870 7.0 8.3 84 10.5 10.0 105 Sucker Creek 8880 8.3 11.0 75 12.0 12.2 98 Tie Creek 6870 1.7 4.8 35 10.5 9.2 114 ----- ----- Basin Index (%) 71 95 BELLE FOURCHE Blind Park 6890 1.0 7.2 14 5.4 9.8 55 Cole Canyon 5910 1.9 5.1 37 4.5 7.6 59 North Rapid Creek 6130 4.5 6.5 69 6.0 8.0 75 ----- ----- Basin Index (%) 39 63 CHEYENNE RIVER BASIN Blind Park 6890 1.0 7.2 14 5.4 9.8 55 North Rapid Creek 6130 4.5 6.5 69 6.0 8.0 75 ----- ----- Basin Index (%) 40 64 UPPER N. PLATTE Arapaho Ridge 10976 19.8 19.4 102 18.9 19.2 98 Blackhall Mtn 9839 29.1 26.9 108 31.0 26.1 119 Cinnabar Park 9707 18.5 18.1 102 20.7 21.0 99 Columbine 9167 25.4 21.5 118 23.1 21.7 106 Divide Peak 8730 19.1 17.3 110 22.1 19.2 115 Joe Wright 10158 17.6 18.2 97 21.5 23.2 93 Laprele Creek 8390 6.8 8.8 77 9.9 10.2 97 Med Bow 10512 33.7 -M * 29.5 -M * Never Summer 10323 16.3 17.8 92 12.6 14.6 86 North French Creek 10153 24.4 24.8 98 24.0 23.5 102 Old Battle 9860 28.6 26.5 108 29.3 29.9 98 Rawah 9069 11.2 9.9 113 14.3 13.9 103 Sage Creek Basin 7850 15.1 11.9 127 14.0 11.6 121 Sand Lake 10098 26.7 23.4 114 25.9 22.0 118 South Brush Creek 8495 9.8 10.5 93 10.8 12.2 89 Tower 10620 37.2 38.7 96 34.5 36.2 95 Webber Springs 9260 21.3 20.0 106 22.9 22.6 101 Whiskey Park 9020 29.4 24.6 120 27.1 24.8 109 Willow Creek Pass 9523 12.5 11.6 108 13.3 12.1 110 Zirkel 9338 24.3 26.0 93 25.8 27.8 93 ----- ----- Basin Index (%) 105 103 SWEETWATER Deer Park 9700 15.3 12.8 120 17.8 16.2 110 Larsen Creek 9000 7.5 10.6 71 11.8 11.6 102 South Pass 9040 13.5 13.4 101 15.5 13.7 113 ----- ----- Basin Index (%) 99 109 LOWER N. PLATTE Casper Mtn. 7920 8.6 11.7 74 12.7 11.5 110 Laprele Creek 8390 6.8 8.8 77 9.9 10.2 97 Reno Hill 8430 8.7 12.0 72 12.4 12.0 103 Windy Peak 7915 7.9 6.9 114 9.2 8.5 108 ----- ----- Basin Index (%) 81 105 LARAMIE RIVER Brooklyn Lake 10250 22.5 18.6 121 23.0 19.0 121 Cinnabar Park 9707 18.5 18.1 102 20.7 21.0 99 Crow Creek 8335 4.8 6.5 74 9.0 9.3 97 Deadman Hill 10239 17.6 14.8 119 16.4 15.6 105 Rawah 9069 11.2 9.9 113 14.3 13.9 103 Roach 9740 12.9 14.2 91 15.2 16.4 93 Windy Peak 7915 7.9 6.9 114 9.2 8.5 108 ----- ----- Basin Index (%) 107 104 S. PLATTE Crow Creek 8335 4.8 6.5 74 9.0 9.3 97 ----- ----- Basin Index (%) 74 97 LITTLE SNAKE RIVER Battle Mountain 7498 11.8 11.2 105 17.3 13.4 129 Divide Peak 8730 19.1 17.3 110 22.1 19.2 115 Elk River 8739 17.4 16.5 105 17.3 17.0 102 Elkhead Divide 8800 21.0 -M * 21.5 -M * Little Snake River 8928 27.0 24.4 111 29.9 28.4 105 Old Battle 9860 28.6 26.5 108 29.3 29.9 98 Sage Creek Basin 7850 15.1 11.9 127 14.0 11.6 121 Sandstone RS 8152 17.8 11.7 152 16.4 16.5 99 Whiskey Park 9020 29.4 24.6 120 27.1 24.8 109 ----- ----- Basin Index (%) 115 108 UPPER GREEN RIVER Big Sandy Opening 9080 10.5 12.0 88 11.4 11.5 99 Blind Bull Sum 8650 22.0 22.3 99 15.3 16.6 92 East Rim Divide 7930 8.2 10.0 82 9.8 10.3 95 Elkhart Park G.S. 9400 9.1 11.2 81 10.0 11.4 88 Gros Ventre Summit 8750 10.7 11.4 94 11.8 11.1 106 Gunsight Pass 9820 11.6 12.1 96 12.9 12.7 102 Indian Creek 9425 20.3 20.8 98 18.0 17.8 101 Kendall R.S. 7740 8.7 11.3 77 11.7 12.3 95 Larsen Creek 9000 7.5 10.6 71 11.8 11.6 102 Loomis Park 8240 11.5 14.2 81 13.3 15.6 85 New Fork Lake 8340 7.8 9.6 81 -M 9.6 * Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 7.6 12.1 63 11.2 12.8 88 Spring Creek Divide 9000 21.1 22.6 93 20.3 22.0 92 Triple Peak 8500 22.2 21.8 102 22.5 23.2 97 ----- ----- Basin Index (%) 89 95 LOWER GREEN RIVER Blacks Fork Jct 8869 11.2 7.9 142 13.2 10.7 123 Buck Pasture 9632 14.1 -M * 14.5 -M * EF Blacks Fork GS 9360 8.2 10.6 77 9.4 9.8 96 Hams Fork 7840 -M 10.4 * 10.3 9.6 107 Henrys Fork 10182 -M -M * 12.2 -M * Hewinta 9500 12.0 9.3 129 14.3 12.0 119 Hickerson Park 9122 10.9 7.5 145 13.0 8.8 148 Hole-in-Rock 9168 8.6 6.8 126 10.1 8.6 117 Indian Creek 9425 20.3 20.8 98 18.0 17.8 101 Kelley R.S. 8180 15.2 13.2 115 15.7 14.6 108 Spirit Lk 10235 13.7 11.2 122 17.0 14.4 118 Steel Creek Park 10158 14.3 13.2 108 16.4 13.9 118 ----- ----- Basin Index (%) 114 114 UPPER BEAR RIVER Bear River RS 8777 11.7 8.4 139 13.2 10.2 129 Bug Lake 7987 21.9 16.9 130 21.3 15.8 135 Burts Miller Ranch 8000 9.0 5.3 170 11.8 6.7 176 Chalk Creek #1 9171 -M 20.8 * -M 20.6 * Giveout 6930 10.3 7.8 132 11.9 10.6 112 Hayden Fork 9130 16.9 13.2 128 20.5 18.1 113 Kelley R.S. 8180 15.2 13.2 115 15.7 14.6 108 Lily Lake 9133 12.9 11.2 115 14.5 13.7 106 Monte Cristo 8932 27.1 24.2 112 26.0 22.2 117 Salt River Summit 7640 14.4 12.3 117 13.8 13.8 100 Spring Creek Divide 9000 21.1 22.6 93 20.3 22.0 92 Trial Lake 9992 23.3 19.7 118 23.0 19.9 116 ----- ----- Basin Index (%) 119 115 ----------------------------------------------------------------------------- -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.