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 SATURDAY: MARCH 23 , 2024 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Median Med ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 14.9 16.0 93 19.0 18.9 101 Blind Bull Sum 8650 22.3 22.4 100 15.3 16.8 91 Cottonwood Creek 7670 19.6 20.4 96 23.7 23.0 103 East Rim Divide 7930 8.1 10.2 79 9.8 10.3 95 Grand Targhee 9260 35.2 37.8 93 25.1 28.6 88 Granite Creek 6770 13.8 15.7 88 14.7 17.0 86 Grassy Lake 7265 26.6 30.5 87 32.2 32.5 99 Gros Ventre Summit 8750 10.6 11.5 92 11.8 11.2 105 Gunsight Pass 9820 11.5 12.0 96 13.0 12.7 102 Lewis Lake Divide 7850 28.9 29.1 99 33.0 30.0 110 Loomis Park 8240 10.9 14.0 78 13.4 15.6 86 Phillips Bench 8200 22.8 23.8 96 25.6 24.8 103 Salt River Summit 7640 14.6 12.4 118 13.9 14.1 99 Snake River Station 6920 15.3 16.7 92 21.8 20.0 109 Somsen Ranch 6800 16.1 11.6 139 19.9 14.9 134 Spring Creek Divide 9000 21.3 22.6 94 20.4 22.0 93 Thumb Divide 7980 15.6 14.8 105 16.6 15.6 106 Togwotee Pass 9580 17.8 21.6 82 17.4 22.6 77 Triple Peak 8500 22.1 21.9 101 22.5 23.6 95 Two Ocean Plateau 9240 24.9 26.6 94 24.2 23.6 103 Willow Creek 8080 31.4 27.2 115 31.3 30.2 104 Younts Peak 8350 13.3 13.7 97 14.2 13.4 106 ----- ----- Basin Index (%) 97 99 MADISON HEADWATERS IN WYOMING Black Bear 8170 30.4 36.2 84 34.6 33.4 104 Canyon 7870 9.9 -M * 12.6 -M * Madison Plateau 7750 18.5 20.8 89 21.4 22.4 96 West Yellowstone 6700 8.2 10.2 80 12.5 13.1 95 Whiskey Creek 6800 12.3 14.4 85 18.2 18.0 101 ----- ----- Basin Index (%) 85 100 YELLOWSTONE HEADWATERS IN WYOMING Beartooth Lake 9360 14.0 20.2 69 13.6 18.5 74 Canyon 7870 9.9 -M * 12.6 -M * Evening Star 9200 19.3 23.7 81 24.7 26.2 94 Fisher Creek 9100 20.3 30.0 68 22.9 29.8 77 Monument Peak 8850 13.0 19.0 68 16.0 19.4 82 Northeast Entrance 7350 5.1 9.8 52 9.2 12.0 77 Parker Peak 9400 18.6 19.6 95 20.1 18.6 108 Sylvan Lake 8420 14.3 18.5 77 20.7 20.9 99 Thumb Divide 7980 15.6 14.8 105 16.6 15.6 106 Two Ocean Plateau 9240 24.9 26.6 94 24.2 23.6 103 White Mill 8700 15.3 21.6 71 16.2 21.1 77 Wolverine 7650 9.1 10.7 85 12.6 11.4 111 ----- ----- Basin Index (%) 79 91 WIND RIVER Burroughs Creek 8750 10.9 -M * 10.9 -M * Castle Creek 8400 6.0 7.0 86 7.3 7.8 94 Cold Springs 9630 7.9 6.6 120 10.7 8.1 132 Deer Park 9700 15.3 12.8 120 17.8 16.3 109 Hobbs Park 10100 15.3 12.4 123 15.8 11.1 142 Kirwin 9550 12.4 9.5 131 14.8 10.4 142 Little Warm 9370 9.0 9.2 98 12.0 11.0 109 South Pass 9040 13.4 13.5 99 15.5 13.8 112 St. Lawrence Alt 8620 5.6 -M * 9.4 -M * Togwotee Pass 9580 17.8 21.6 82 17.4 22.6 77 Townsend Creek 8700 9.2 8.1 114 12.9 9.2 140 ----- ----- Basin Index (%) 106 113 BIGHORN BASIN Bald Mtn. 9380 11.6 16.5 70 11.1 14.7 76 Bear Trap Meadow 8200 3.7 5.9 63 6.8 7.2 94 Bone Springs Div 9350 11.1 14.8 75 10.7 13.6 79 Grave Springs 8550 3.8 7.8 49 6.2 8.5 73 Kirwin 9550 12.4 9.5 131 14.8 10.4 142 Marquette 8760 10.4 6.4 162 13.4 7.8 172 Middle Powder 7760 4.8 9.6 50 6.6 9.0 73 Owl Creek 8975 5.0 5.0 100 6.6 5.2 127 Powder River Pass 9480 5.7 9.9 58 9.4 11.4 82 Shell Creek 9580 10.5 13.8 76 11.2 12.2 92 Timber Creek 7950 7.2 4.0 180 11.3 6.6 171 ----- ----- Basin Index (%) 84 101 SHOSHONE RIVER Blackwater 9780 20.4 20.7 99 21.4 20.0 107 Evening Star 9200 19.3 23.7 81 24.7 26.2 94 Marquette 8760 10.4 6.4 162 13.4 7.8 172 Sylvan Lake 8420 14.3 18.5 77 20.7 20.9 99 Sylvan Road 7120 7.1 11.3 63 14.5 15.1 96 Younts Peak 8350 13.3 13.7 97 14.2 13.4 106 ----- ----- Basin Index (%) 90 105 POWDER RIVER Bear Trap Meadow 8200 3.7 5.9 63 6.8 7.2 94 Cloud Peak Reservoir 9860 10.8 13.4 81 12.4 11.8 105 Grave Springs 8550 3.8 7.8 49 6.2 8.5 73 Hansen Sawmill 8360 4.6 6.0 77 7.6 7.7 99 Middle Powder 7760 4.8 9.6 50 6.6 9.0 73 Powder River Pass 9480 5.7 9.9 58 9.4 11.4 82 Soldier Park 8720 3.7 6.0 62 8.6 8.0 108 ----- ----- Basin Index (%) 63 91 TONGUE RIVER Big Goose 7990 5.3 7.4 72 9.3 8.8 106 Bone Springs Div 9350 11.1 14.8 75 10.7 13.6 79 Burgess Junction 7880 6.5 9.6 68 10.0 10.4 96 Dome Lake 8880 -M 10.4 * 9.6 11.2 86 Little Goose 8870 7.3 8.3 88 10.7 10.4 103 Sucker Creek 8880 8.6 11.2 77 12.3 12.4 99 Tie Creek 6870 1.9 4.6 41 10.6 9.3 114 ----- ----- Basin Index (%) 73 96 BELLE FOURCHE Blind Park 6890 .5 7.0 7 5.4 9.9 55 Cole Canyon 5910 1.8 5.1 35 4.6 7.8 59 North Rapid Creek 6130 4.4 6.6 67 6.2 8.1 77 ----- ----- Basin Index (%) 36 63 CHEYENNE RIVER BASIN Blind Park 6890 .5 7.0 7 5.4 9.9 55 North Rapid Creek 6130 4.4 6.6 67 6.2 8.1 77 ----- ----- Basin Index (%) 36 64 UPPER N. PLATTE Arapaho Ridge 10976 19.0 19.6 97 18.9 19.2 98 Blackhall Mtn 9839 28.0 27.3 103 31.1 26.5 117 Cinnabar Park 9707 18.5 18.3 101 20.8 21.0 99 Columbine 9167 25.3 21.3 119 23.2 21.8 106 Divide Peak 8730 19.0 17.7 107 22.1 19.4 114 Joe Wright 10158 17.6 18.5 95 21.5 23.6 91 Laprele Creek 8390 6.7 8.8 76 9.9 10.4 95 Med Bow 10512 33.7 -M * 29.5 -M * Never Summer 10323 16.3 18.0 91 12.6 14.8 85 North French Creek 10153 24.2 25.3 96 24.0 23.6 102 Old Battle 9860 28.6 26.8 107 29.3 30.2 97 Rawah 9069 10.9 9.8 111 14.3 14.0 102 Sage Creek Basin 7850 14.7 11.7 126 14.0 11.6 121 Sand Lake 10098 26.8 24.0 112 25.9 22.1 117 South Brush Creek 8495 9.6 10.8 89 10.8 12.4 87 Tower 10620 37.2 38.8 96 34.6 36.2 96 Webber Springs 9260 21.1 20.3 104 23.0 23.0 100 Whiskey Park 9020 29.2 24.8 118 27.1 25.0 108 Willow Creek Pass 9523 12.5 12.0 104 13.3 12.2 109 Zirkel 9338 24.1 26.0 93 25.9 27.8 93 ----- ----- Basin Index (%) 103 102 SWEETWATER Deer Park 9700 15.3 12.8 120 17.8 16.3 109 Larsen Creek 9000 7.4 10.6 70 11.9 11.9 100 South Pass 9040 13.4 13.5 99 15.5 13.8 112 ----- ----- Basin Index (%) 98 108 LOWER N. PLATTE Casper Mtn. 7920 8.6 11.8 73 12.7 11.7 109 Laprele Creek 8390 6.7 8.8 76 9.9 10.4 95 Reno Hill 8430 8.7 12.2 71 12.4 12.4 100 Windy Peak 7915 7.9 7.0 113 9.2 8.6 107 ----- ----- Basin Index (%) 80 103 LARAMIE RIVER Brooklyn Lake 10250 22.5 19.0 118 23.0 19.2 120 Cinnabar Park 9707 18.5 18.3 101 20.8 21.0 99 Crow Creek 8335 4.7 6.5 72 9.0 9.3 97 Deadman Hill 10239 17.6 15.2 116 16.5 15.7 105 Rawah 9069 10.9 9.8 111 14.3 14.0 102 Roach 9740 12.8 14.2 90 15.2 16.6 92 Windy Peak 7915 7.9 7.0 113 9.2 8.6 107 ----- ----- Basin Index (%) 105 103 S. PLATTE Crow Creek 8335 4.7 6.5 72 9.0 9.3 97 ----- ----- Basin Index (%) 72 97 LITTLE SNAKE RIVER Battle Mountain 7498 11.6 11.1 105 17.3 13.6 127 Divide Peak 8730 19.0 17.7 107 22.1 19.4 114 Elk River 8739 16.5 16.5 100 17.3 17.1 101 Elkhead Divide 8800 20.7 -M * 21.5 -M * Little Snake River 8928 26.5 24.6 108 30.0 28.6 105 Old Battle 9860 28.6 26.8 107 29.3 30.2 97 Sage Creek Basin 7850 14.7 11.7 126 14.0 11.6 121 Sandstone RS 8152 17.1 11.7 146 16.5 16.5 100 Whiskey Park 9020 29.2 24.8 118 27.1 25.0 108 ----- ----- Basin Index (%) 113 107 UPPER GREEN RIVER Big Sandy Opening 9080 10.7 12.0 89 11.6 11.8 98 Blind Bull Sum 8650 22.3 22.4 100 15.3 16.8 91 East Rim Divide 7930 8.1 10.2 79 9.8 10.3 95 Elkhart Park G.S. 9400 9.1 11.3 81 10.0 11.6 86 Gros Ventre Summit 8750 10.6 11.5 92 11.8 11.2 105 Gunsight Pass 9820 11.5 12.0 96 13.0 12.7 102 Indian Creek 9425 20.9 20.6 101 18.1 17.9 101 Kendall R.S. 7740 8.6 11.4 75 11.8 12.4 95 Larsen Creek 9000 7.4 10.6 70 11.9 11.9 100 Loomis Park 8240 10.9 14.0 78 13.4 15.6 86 New Fork Lake 8340 7.6 9.7 78 -M 9.8 * Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 8.9 12.2 73 11.5 12.8 90 Spring Creek Divide 9000 21.3 22.6 94 20.4 22.0 93 Triple Peak 8500 22.1 21.9 101 22.5 23.6 95 ----- ----- Basin Index (%) 89 95 LOWER GREEN RIVER Blacks Fork Jct 8869 11.0 7.8 141 13.1 10.9 120 Buck Pasture 9632 14.0 -M * 14.2 -M * EF Blacks Fork GS 9360 7.9 10.8 73 9.3 10.0 93 Hams Fork 7840 -M 10.5 * 10.5 9.7 108 Henrys Fork 10182 -M -M * 11.9 -M * Hewinta 9500 11.8 9.5 124 14.0 12.0 117 Hickerson Park 9122 10.7 7.4 145 12.9 8.9 145 Hole-in-Rock 9168 8.5 6.9 123 10.1 8.8 115 Indian Creek 9425 20.9 20.6 101 18.1 17.9 101 Kelley R.S. 8180 15.5 13.5 115 15.9 14.6 109 Spirit Lk 10235 13.6 11.3 120 17.2 15.2 113 Steel Creek Park 10158 14.2 13.3 107 16.3 14.0 116 ----- ----- Basin Index (%) 113 113 UPPER BEAR RIVER Bear River RS 8777 11.1 8.3 134 13.2 10.7 123 Bug Lake 7987 21.5 17.1 126 21.4 16.0 134 Burts Miller Ranch 8000 8.1 5.4 150 11.8 6.8 174 Chalk Creek #1 9171 21.0 20.9 100 22.2 20.8 107 Giveout 6930 10.6 7.6 139 12.0 10.7 112 Hayden Fork 9130 16.7 13.4 125 20.5 18.3 112 Kelley R.S. 8180 15.5 13.5 115 15.9 14.6 109 Lily Lake 9133 13.0 11.2 116 14.5 13.8 105 Monte Cristo 8932 26.5 24.6 108 25.6 22.7 113 Salt River Summit 7640 14.6 12.4 118 13.9 14.1 99 Spring Creek Divide 9000 21.3 22.6 94 20.4 22.0 93 Trial Lake 9992 24.0 20.1 119 23.1 20.0 116 ----- ----- Basin Index (%) 115 113 ----------------------------------------------------------------------------- -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.