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: APRIL 20 , 2026 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Median Med ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7040 6.1 14.6 42 24.7 21.4 115 Blind Bull Sum 8880 24.3 25.4 96 16.9 18.6 91 Cottonwood Creek 7710 11.6 20.6 56 26.9 26.7 101 East Rim Divide 8010 .0 9.4 0 11.9 11.7 102 Grand Targhee 9260 -M 46.6 * -M 34.6 * Granite Creek 6770 2.5 12.5 20 21.8 19.6 111 Grassy Lake 7330 12.6 32.9 38 33.2 37.3 89 Gros Ventre Summit 8760 5.6 13.2 42 15.4 13.4 115 Gunsight Pass 9820 7.9 13.6 58 16.5 14.8 111 Lewis Lake Divide 7880 24.2 33.3 73 41.0 35.0 117 Loomis Park 8240 1.9 13.4 14 17.0 17.4 98 Phillips Bench 8170 17.7 26.6 67 28.9 27.5 105 Salt River Summit 7630 1.6 11.2 14 16.9 17.1 99 Snake River Station 6900 .0 15.3 0 22.4 23.3 96 Somsen Ranch 6830 .0 7.2 0 18.1 17.4 104 Spring Creek Divide 9020 23.2 25.3 92 25.9 24.5 106 Thumb Divide 7970 8.8 16.7 53 22.2 19.6 113 Togwotee Pass 9590 20.6 24.9 83 29.6 26.1 113 Triple Peak 8520 14.0 21.8 64 28.3 26.8 106 Two Ocean Plateau 9240 34.1 32.3 106 33.9 28.4 119 Willow Creek 8060 15.7 28.8 55 33.9 35.2 96 Younts Peak 8340 -M 15.2 * 22.4 16.3 137 ----- ----- Basin Index (%) 58 106 MADISON HEADWATERS IN WYOMING Black Bear 8160 27.3 39.6 69 36.4 39.0 93 Canyon 7870 7.2 13.6 53 16.9 16.7 101 Madison Plateau 7710 15.1 23.5 64 27.8 25.8 108 West Yellowstone 6680 .1 6.9 1 16.4 15.4 106 Whiskey Creek 6790 6.6 15.8 42 23.8 21.5 111 ----- ----- Basin Index (%) 57 102 YELLOWSTONE HEADWATERS IN WYOMING Beartooth Lake 9360 28.0 23.7 118 28.8 21.9 132 Canyon 7870 7.2 13.6 53 16.9 16.7 101 Evening Star 9030 26.1 27.1 96 36.2 30.4 119 Fisher Creek 9110 38.8 35.4 110 40.2 35.4 114 Monument Peak 8740 21.1 22.1 95 28.4 23.6 120 Northeast Entrance 7420 .0 7.3 0 17.7 13.9 127 Parker Peak 9420 22.8 23.3 98 28.0 21.2 132 Sylvan Lake 8440 12.0 20.9 57 26.4 24.8 106 Thumb Divide 7970 8.8 16.7 53 22.2 19.6 113 Two Ocean Plateau 9240 34.1 32.3 106 33.9 28.4 119 White Mill 8730 27.9 26.0 107 28.7 24.2 119 Wolverine 7660 .0 8.0 0 17.1 13.1 131 ----- ----- Basin Index (%) 88 119 WIND RIVER Burroughs Creek 8760 .0 -M * 18.8 -M * Castle Creek 8410 .0 4.5 0 8.0 9.0 89 Cold Springs 9640 .0 6.2 0 12.7 9.8 130 Deer Park 9690 9.1 16.0 57 18.6 20.3 92 Hobbs Park 10080 11.0 15.8 70 15.8 14.6 108 Kirwin 9580 10.4 12.0 87 19.4 13.6 143 Little Warm 9370 5.0 10.4 48 15.2 12.7 120 South Pass 9040 7.3 15.6 47 15.4 17.3 89 St. Lawrence Alt 8610 -M -M * -M -M * Togwotee Pass 9590 20.6 24.9 83 29.6 26.1 113 Townsend Creek 8720 .0 9.7 0 10.9 13.0 84 ----- ----- Basin Index (%) 55 107 BIGHORN BASIN Bald Mtn. 9360 18.0 19.8 91 17.5 17.0 103 Bear Trap Meadow 8200 .3 4.0 8 10.3 10.2 101 Bone Springs Div 9340 14.0 17.6 80 12.9 17.0 76 Grave Springs 8560 -M 8.4 * 9.7 11.0 88 Kirwin 9580 10.4 12.0 87 19.4 13.6 143 Marquette 8800 .3 8.1 4 7.6 10.6 72 Middle Powder 7760 -M 11.8 * 11.3 11.0 103 Owl Creek 8990 .0 4.2 0 6.2 7.2 86 Powder River Pass 9480 -M 11.0 * 15.5 14.3 108 Shell Creek 9570 14.4 16.8 86 15.5 15.0 103 Timber Creek 7910 .0 5.4 0 3.7 9.0 41 ----- ----- Basin Index (%) 65 95 SHOSHONE RIVER Blackwater 9830 23.4 25.1 93 28.6 23.8 120 Evening Star 9030 26.1 27.1 96 36.2 30.4 119 Marquette 8800 .3 8.1 4 7.6 10.6 72 Sylvan Lake 8440 12.0 20.9 57 26.4 24.8 106 Sylvan Road 7140 .0 9.8 0 19.6 17.6 111 Younts Peak 8340 -M 15.2 * 22.4 16.3 137 ----- ----- Basin Index (%) 68 114 POWDER RIVER Bear Trap Meadow 8200 .3 4.0 8 10.3 10.2 101 Cloud Peak Reservoir 9830 8.6 15.8 54 14.9 15.0 99 Grave Springs 8560 -M 8.4 * 9.7 11.0 88 Hanson Sawmill 8360 .2 5.2 4 10.1 9.8 103 Middle Powder 7760 -M 11.8 * 11.3 11.0 103 Powder River Pass 9480 -M 11.0 * 15.5 14.3 108 Soldier Park 8680 .2 6.7 3 8.0 10.8 74 ----- ----- Basin Index (%) 29 97 TONGUE RIVER Big Goose 8010 .0 8.8 0 10.5 11.0 95 Bone Springs Div 9340 14.0 17.6 80 12.9 17.0 76 Burgess Junction 7910 7.2 11.7 62 12.8 13.5 95 Dome Lake 8890 7.1 11.6 61 13.8 14.6 95 Little Goose 8560 -M 10.8 * 13.4 13.8 97 Sucker Creek 8840 6.1 13.0 47 15.3 15.6 98 Tie Creek 7050 .1 4.0 2 11.2 12.5 90 ----- ----- Basin Index (%) 52 92 BELLE FOURCHE Blind Park 6900 .1 4.4 2 12.3 12.4 99 Cole Canyon 5930 .0 2.6 0 10.7 10.1 106 North Rapid Creek 6150 .0 4.0 0 9.3 10.2 91 ----- ----- Basin Index (%) 1 99 CHEYENNE RIVER BASIN Blind Park 6900 .1 4.4 2 12.3 12.4 99 North Rapid Creek 6150 .0 4.0 0 9.3 10.2 91 ----- ----- Basin Index (%) 1 96 UPPER N. PLATTE Arapaho Ridge 10960 10.3 23.4 44 17.6 23.5 75 Blackhall Mtn 9830 11.5 32.9 35 22.9 31.8 72 Cinnabar Park 9670 4.0 20.0 20 18.1 24.6 74 Columbine 9170 .0 21.2 0 21.3 27.0 79 Divide Peak 8700 .2 19.4 1 16.9 23.3 73 Joe Wright 10140 5.5 21.7 25 20.9 28.3 74 Laprele Creek 8370 .1 8.2 1 10.8 13.0 83 Med Bow 10500 26.4 -M * 28.6 -M * Never Summer 10300 13.6 21.9 62 12.1 18.4 66 North French Creek 10150 17.2 31.4 55 25.1 29.6 85 Old Battle 9840 21.8 33.2 66 29.4 35.9 82 Rawah 9100 .6 10.4 6 12.0 17.1 70 Sage Creek Basin 7830 .0 6.5 0 11.0 13.8 80 Sand Lake 10080 20.0 30.2 66 21.8 26.8 81 South Brush Creek 8480 .3 8.9 3 9.9 14.7 67 Tower 10610 23.9 46.2 52 34.2 41.8 82 Webber Springs 9250 7.9 22.2 36 21.4 27.4 78 Whiskey Park 8950 13.8 26.2 53 26.4 29.7 89 Willow Creek Pass 9520 8.1 14.6 55 11.6 14.7 79 Zirkel 9320 .3 25.3 1 26.8 33.2 81 ----- ----- Basin Index (%) 38 78 SWEETWATER Deer Park 9690 9.1 16.0 57 18.6 20.3 92 Larsen Creek 8880 .1 8.6 1 11.9 15.1 79 South Pass 9040 7.3 15.6 47 15.4 17.3 89 ----- ----- Basin Index (%) 41 87 LOWER N. PLATTE Casper Mtn. 7940 .3 14.4 2 10.7 15.5 69 Laprele Creek 8370 .1 8.2 1 10.8 13.0 83 Reno Hill 8410 2.2 14.1 16 12.8 17.0 75 Windy Peak 7890 .0 6.8 0 8.7 11.4 76 ----- ----- Basin Index (%) 6 76 LARAMIE RIVER Brooklyn Lake 10250 7.2 22.0 33 20.2 23.6 86 Cinnabar Park 9670 4.0 20.0 20 18.1 24.6 74 Crow Creek 8320 .1 2.9 3 7.5 11.8 64 Deadman Hill 10240 7.5 17.6 43 12.4 19.6 63 Rawah 9100 .6 10.4 6 12.0 17.1 70 Roach 9710 2.2 16.6 13 13.8 20.4 68 Windy Peak 7890 .0 6.8 0 8.7 11.4 76 ----- ----- Basin Index (%) 22 72 S. PLATTE Crow Creek 8320 .1 2.9 3 7.5 11.8 64 ----- ----- Basin Index (%) 3 64 LITTLE SNAKE RIVER Battle Mountain 7460 .0 5.8 0 14.8 16.2 91 Divide Peak 8700 .2 19.4 1 16.9 23.3 73 Elk River 8710 .2 15.2 1 17.8 20.7 86 Elkhead Divide 8780 .6 -M * -M -M * Little Snake River 8930 6.8 24.2 28 27.6 34.4 80 Old Battle 9840 21.8 33.2 66 29.4 35.9 82 Sage Creek Basin 7830 .0 6.5 0 11.0 13.8 80 Sandstone RS 8150 .0 9.8 0 15.0 18.8 80 Whiskey Park 8950 13.8 26.2 53 26.4 29.7 89 ----- ----- Basin Index (%) 31 82 UPPER GREEN RIVER Big Sandy Opening 9100 9.6 13.6 71 12.2 13.9 88 Blind Bull Sum 8880 24.3 25.4 96 16.9 18.6 91 East Rim Divide 8010 .0 9.4 0 11.9 11.7 102 Elkhart Park G.S. 9410 2.4 12.8 19 13.2 13.1 101 Gros Ventre Summit 8760 5.6 13.2 42 15.4 13.4 115 Gunsight Pass 9820 7.9 13.6 58 16.5 14.8 111 Indian Creek 9400 15.3 24.7 62 21.8 20.3 107 Kendall R.S. 7790 .1 9.2 1 17.1 13.7 125 Larsen Creek 8880 .1 8.6 1 11.9 15.1 79 Loomis Park 8240 1.9 13.4 14 17.0 17.4 98 New Fork Lake 8380 .0 9.4 0 12.9 11.2 115 Pocket Creek 9370 -M -M * -M -M * Snider Basin 8080 .0 10.6 0 15.0 14.3 105 Spring Creek Divide 9020 23.2 25.3 92 25.9 24.5 106 Triple Peak 8520 14.0 21.8 64 28.3 26.8 106 ----- ----- Basin Index (%) 49 103 LOWER GREEN RIVER Blacks Fork Jct 8880 .6 7.1 8 11.1 13.4 83 Buck Pasture 9630 -M -M * 15.8 -M * EF Blacks Fork GS 9360 .1 11.0 1 10.5 12.6 83 Hams Fork 7860 -M 7.6 * 12.7 11.5 110 Henrys Fork 10180 -M -M * 11.1 -M * Hewinta 9510 .0 8.2 0 11.8 14.9 79 Hickerson Park 9120 .0 5.6 0 8.0 11.2 71 Hole-in-Rock 9170 .0 5.9 0 8.8 10.8 81 Indian Creek 9400 15.3 24.7 62 21.8 20.3 107 Kelley R.S. 8240 6.0 14.2 42 18.4 17.2 107 Spirit Lk 10240 1.7 12.8 13 15.4 19.0 81 Steel Creek Park 10140 10.1 16.0 63 14.8 17.3 86 ----- ----- Basin Index (%) 32 90 UPPER BEAR RIVER Bear River RS 8510 .0 3.6 0 11.2 12.8 88 Bug Lake 7980 .0 17.4 0 20.7 18.8 110 Burts Miller Ranch 7900 .0 .0 * 10.9 8.6 127 Chalk Creek #1 9160 8.7 22.8 38 21.9 24.1 91 Giveout 6940 .1 2.9 3 14.8 13.2 112 Hayden Fork 9170 .0 11.7 0 19.2 21.9 88 Kelley R.S. 8240 6.0 14.2 42 18.4 17.2 107 Lily Lake 9130 .0 11.4 0 13.1 16.0 82 Monte Cristo 8930 12.1 26.3 46 26.7 27.0 99 Salt River Summit 7630 1.6 11.2 14 16.9 17.1 99 Spring Creek Divide 9020 23.2 25.3 92 25.9 24.5 106 Trial Lake 9970 12.3 22.8 54 21.4 23.3 92 ----- ----- Basin Index (%) 38 98 ---------------------------------------------------------------------------- -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.