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: MAY 4 , 2019 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 13.7 7.8 176 24.5 23.1 106 Black Bear 8170 42.9 37.3 115 49.0 42.2 116 Blind Bull Sum 8650 25.1 22.8 110 21.4 21.6 99 Cottonwood Creek 7670 18.8 14.4 131 29.4 27.8 106 East Rim Divide 7930 .7 7.7 9 14.0 13.1 107 Grand Targhee 9260 48.5 45.7 106 37.6 35.2 107 Granite Creek 6770 12.3 7.6 162 23.5 21.6 109 Grassy Lake 7265 -M 27.9 * -M 39.7 * Gros Ventre Summit 8750 5.9 11.1 53 14.8 14.9 99 Gunsight Pass 9820 15.7 12.0 131 18.8 16.3 115 Lewis Lake Divide 7850 35.3 29.6 119 43.1 39.0 111 Phillips Bench 8200 28.5 24.5 116 35.9 31.0 116 Salt River Summit 7640 9.0 7.4 122 18.8 18.6 101 Snake River Station 6920 11.4 5.6 204 28.2 25.0 113 Spring Creek Divide 9000 24.6 24.3 101 26.5 26.5 100 Thumb Divide 7980 15.0 10.8 139 21.8 21.3 102 Togwotee Pass 9580 26.4 24.7 107 28.8 27.7 104 Two Ocean Plateau 9240 35.1 29.9 117 29.8 30.5 98 Willow Creek 8080 30.3 22.0 138 40.2 38.1 106 Younts Peak 8350 -M 15.8 * -M 18.0 * ----- ----- Basin Index (%) 116 107 MADISON-GALLATIN Black Bear 8170 42.9 37.3 115 49.0 42.2 116 Canyon 7870 12.4 9.1 136 18.5 18.2 102 Madison Plateau 7750 28.4 20.9 136 31.5 29.2 108 West Yellowstone 6700 .6 .2 300* 19.2 16.2 119 Whiskey Creek 6800 15.8 13.3 119 24.0 22.6 106 ----- ----- Basin Index (%) 124 111 YELLOWSTONE Beartooth Lake 9360 24.6 22.7 108 23.2 22.2 105 Burnt Mtn 5880 3.5 .0 * 19.0 16.2 117 Canyon 7870 12.4 9.1 136 18.5 18.2 102 Cole Creek 7850 20.7 16.7 124 -M 16.7 * Evening Star 9200 29.6 24.9 119 34.2 30.8 111 Fisher Creek 9100 36.6 32.7 112 41.0 35.5 115 Northeast Entrance 7350 2.8 1.6 175 16.9 14.0 121 Parker Peak 9400 28.2 21.2 133 28.3 20.3 139 Sylvan Lake 8420 21.0 19.0 111 31.1 25.4 122 Thumb Divide 7980 15.0 10.8 139 21.8 21.3 102 Two Ocean Plateau 9240 35.1 29.9 117 29.8 30.5 98 White Mill 8700 27.9 24.0 116 24.4 26.6 92 Wolverine 7650 3.9 1.1 355 15.0 14.0 107 Younts Peak 8350 -M 15.8 * -M 18.0 * ----- ----- Basin Index (%) 122 110 WIND RIVER Burroughs Creek 8750 9.6 -M * 16.6 -M * Castle Creek 8400 .0 -M * 8.4 -M * Cold Springs 9630 5.0 1.4 357 11.1 12.7 87 Deer Park 9700 16.2 15.4 105 22.0 23.8 92 Hobbs Park 10100 17.7 16.0 111 16.2 17.0 95 Kirwin 9550 10.5 10.6 99 13.4 14.1 95 Little Warm 9370 9.3 8.1 115 11.0 15.6 71 Owl Creek 8975 .6 .6 100 9.0 8.1 111 South Pass 9040 13.7 14.1 97 15.5 20.7 75 St. Lawrence Alt 8620 -M 2.0 * -M 11.8 * Togwotee Pass 9580 26.4 24.7 107 28.8 27.7 104 Townsend Creek 8700 9.5 6.6 144 14.6 15.2 96 ----- ----- Basin Index (%) 112 91 BIGHORN BASIN Bald Mtn. 9380 18.0 20.4 88 14.8 20.0 74 Bear Trap Meadow 8200 .1 .4 25* 8.4 10.9 77 Bone Springs Div 9350 15.3 16.4 93 14.3 18.6 77 Grave Springs 8550 7.5 9.3 81 11.0 13.1 84 Kirwin 9550 10.5 10.6 99 13.4 14.1 95 Marquette 8760 7.7 -M * 11.7 -M * Middle Powder 7760 6.3 11.4 55 10.8 14.4 75 Owl Creek 8975 .6 .6 100 9.0 8.1 111 Powder River Pass 9480 8.2 9.1 90 -M 15.4 * Shell Creek 9580 15.4 16.0 96 12.5 16.6 75 Timber Creek 7950 .9 2.5 36 9.0 10.2 88 ----- ----- Basin Index (%) 86 82 SHOSHONE RIVER Blackwater 9780 29.0 25.8 112 29.6 23.8 124 Evening Star 9200 29.6 24.9 119 34.2 30.8 111 Marquette 8760 7.7 -M * 11.7 -M * Sylvan Lake 8420 21.0 19.0 111 31.1 25.4 122 Sylvan Road 7120 1.0 4.1 24 18.6 18.8 99 Younts Peak 8350 -M 15.8 * -M 18.0 * ----- ----- Basin Index (%) 109 115 POWDER RIVER Bear Trap Meadow 8200 .1 .4 25* 8.4 10.9 77 Cloud Peak Reservoir 9860 13.0 16.3 80 13.4 17.0 79 Grave Springs 8550 7.5 9.3 81 11.0 13.1 84 Hansen Sawmill 8360 3.5 1.7 206 10.0 11.1 90 Middle Powder 7760 6.3 11.4 55 10.8 14.4 75 Powder River Pass 9480 8.2 9.1 90 -M 15.4 * Soldier Park 8720 1.2 -M * 9.0 -M * ----- ----- Basin Index (%) 80 81 TONGUE RIVER Big Goose 7990 7.9 9.4 84 12.7 14.4 88 Bone Springs Div 9350 15.3 16.4 93 14.3 18.6 77 Burgess Junction 7880 8.3 11.8 70 10.5 15.1 70 Dome Lake 8880 7.5 11.3 66 11.4 16.7 68 Little Goose 8870 10.3 -M * 10.0 -M * Sucker Creek 8880 10.4 11.9 87 12.3 17.7 69 Tie Creek 6870 1.3 2.5 52 13.4 14.7 91 ----- ----- Basin Index (%) 80 77 BELLE FOURCHE Blind Park 6890 .0 .2 0* 9.1 14.6 62 Cole Canyon 5910 .7 .0 * 14.6 12.4 118 ----- ----- Basin Index (%) 350* 88 CHEYENNE RIVER BASIN Blind Park 6890 .0 .2 0* 9.1 14.6 62 North Rapid Creek 6130 .0 .0 * -M 12.6 * ----- ----- Basin Index (%) 0* 62 UPPER N. PLATTE Arapaho Ridge 10960 25.5 22.3 114 29.8 26.5 112 Blackhall Mtn 9820 33.9 -M * 38.3 -M * Columbine 9160 17.5 17.1 102 32.3 28.9 112 Divide Peak 8880 15.7 17.5 90 27.2 24.8 110 Joe Wright 10120 22.7 22.9 99 34.3 30.4 113 Laprele Creek 8375 7.0 5.4 130 16.5 15.3 108 Med Bow 10500 42.5 -M * 40.6 -M * Never Summer 10280 25.3 21.8 116 22.6 -M * North French Creek 10130 32.4 32.7 99 34.9 31.2 112 Old Battle 10000 40.9 34.8 118 42.1 39.7 106 Rawah 9020 7.4 4.8 154 20.2 17.6 115 Sage Creek Basin 7850 9.3 .8 1162* 19.1 16.4 116 Sand Lake 10050 -M 31.6 * -M 29.5 * South Brush Creek 8440 1.7 7.9 22 14.8 18.2 81 Tower 10500 54.6 50.7 108 52.2 45.3 115 Webber Springs 9250 23.9 21.1 113 35.4 30.3 117 Whiskey Park 8950 29.5 26.9 110 37.5 32.0 117 Willow Creek Pass 9540 18.0 14.5 124 20.8 16.0 130 Zirkel 9340 27.9 20.7 135 42.4 31.3 135 ----- ----- Basin Index (%) 112 114 SWEETWATER Deer Park 9700 16.2 15.4 105 22.0 23.8 92 Larsen Creek 9000 2.9 8.3 35 16.4 -M * South Pass 9040 13.7 14.1 97 15.5 20.7 75 ----- ----- Basin Index (%) 87 84 LOWER N. PLATTE Casper Mtn. 7900 11.8 12.5 94 14.9 18.4 81 Laprele Creek 8375 7.0 5.4 130 16.5 15.3 108 Reno Hill 8400 15.4 12.1 127 20.6 19.3 107 Windy Peak 7900 4.8 3.1 155 13.1 13.2 99 ----- ----- Basin Index (%) 118 98 LARAMIE RIVER Brooklyn Lake 10240 24.8 23.0 108 30.4 25.1 121 Cinnabar Park 9574 19.6 18.8 104 27.5 27.3 101 Crow Creek 8330 .0 .0 * 13.2 13.7 96 Deadman Hill 10220 23.1 19.1 121 23.5 21.0 112 Rawah 9020 7.4 4.8 154 20.2 17.6 115 Roach 9700 16.0 17.1 94 25.8 22.6 114 Windy Peak 7900 4.8 3.1 155 13.1 13.2 99 ----- ----- Basin Index (%) 111 109 S. PLATTE Black Mountain 8920 9.1 -M * 16.9 -M * Crow Creek 8330 .0 .0 * 13.2 13.7 96 Deadman Hill 10220 23.1 19.1 121 23.5 21.0 112 ----- ----- Basin Index (%) 121* 106 LITTLE SNAKE RIVER Battle Mountain 7440 .8 .0 * 20.0 17.4 115 Divide Peak 8880 15.7 17.5 90 27.2 24.8 110 Elk River 8700 12.8 12.0 107 23.1 23.1 100 Little Snake River 8915 26.8 21.7 124 43.0 33.2 130 Old Battle 10000 40.9 34.8 118 42.1 39.7 106 Sage Creek Basin 7850 9.3 .8 1162* 19.1 16.4 116 Sandstone RS 8150 7.7 4.6 167 21.9 21.0 104 Whiskey Park 8950 29.5 26.9 110 37.5 32.0 117 ----- ----- Basin Index (%) 121 113 UPPER GREEN RIVER Big Sandy Opening 9080 13.7 9.4 146 17.4 15.5 112 Blind Bull Sum 8650 25.1 22.8 110 21.4 21.6 99 East Rim Divide 7930 .7 7.7 9 14.0 13.1 107 Elkhart Park G.S. 9400 14.2 10.6 134 17.0 15.2 112 Gros Ventre Summit 8750 5.9 11.1 53 14.8 14.9 99 Gunsight Pass 9820 15.7 12.0 131 18.8 16.3 115 Indian Creek 9425 21.5 22.1 97 20.4 25.3 81 Kendall R.S. 7740 4.5 2.6 173 13.9 15.7 89 Loomis Park 8240 12.3 10.0 123 19.7 19.2 103 New Fork Lake 8340 5.9 5.5 107 11.8 12.3 96 Pocket Creek 9360 14.4 -M * 17.3 -M * Snider Basin 8060 2.3 8.5 27 14.9 15.8 94 Spring Creek Divide 9000 24.6 24.3 101 26.5 26.5 100 Triple Peak 8500 20.5 16.3 126 29.0 28.2 103 ----- ----- Basin Index (%) 102 100 LOWER GREEN RIVER Blacks Fork Jct 8869 4.3 -M * 15.8 -M * Buck Pasture 9632 15.0 -M * 23.9 -M * EF Blacks Fork GS 9360 -M -M * -M -M * Hams Fork 7840 .5 1.5 33 13.9 13.3 105 Hewinta 9500 6.7 4.2 160 18.1 16.5 110 Hickerson Park 9122 3.4 3.2 106 14.0 12.2 115 Hole-in-Rock 9168 1.1 1.7 65 13.4 11.8 114 Indian Creek 9425 21.5 22.1 97 20.4 25.3 81 Kelley R.S. 8180 10.8 10.4 104 18.2 20.5 89 Spirit Lk 10235 14.9 -M * 19.8 -M * Steel Creek Park 10158 17.9 17.4 103 22.7 19.5 116 ----- ----- Basin Index (%) 102 101 UPPER BEAR RIVER Bear River RS 8777 2.7 -M * 17.9 -M * Bug Lake 7987 19.6 13.8 142 27.2 22.0 124 Burts Miller Ranch 8000 -M -M * 10.3 -M * Chalk Creek #1 9171 24.1 23.4 103 33.5 28.9 116 Hayden Fork 9130 10.6 8.6 123 27.0 24.1 112 Kelley R.S. 8180 10.8 10.4 104 18.2 20.5 89 Lily Lake 9133 10.2 9.7 105 19.4 19.9 97 Monte Cristo 8932 33.4 25.3 132 36.2 29.7 122 Salt River Summit 7640 9.0 7.4 122 18.8 18.6 101 Spring Creek Divide 9000 24.6 24.3 101 26.5 26.5 100 ----- ----- Basin Index (%) 116 109 ----------------------------------------------------------------------------- -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. ---------------------------------------------------------------------------- -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.