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: MAY 16 , 2008 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 12.3 6.1 202 31.2 25.7 121 COTTONWOOD CREEK 7670 20.3 13.4 151 30.0 34.0 88 GRAND TARGHEE 9260 59.3 -M * 41.9 -M * GRANITE CREEK 6770 11.5 7.5 153 25.5 23.6 108 GRASSY LAKE 7265 32.2 25.9 124 49.9 43.0 116 GROS VENTRE SUMMIT 8750 10.5 9.6 109 16.9 16.5 102 GUNSIGHT PASS 9820 11.8 -M * 18.0 -M * LEWIS LAKE DIVIDE 7850 36.7 28.4 129 42.4 43.6 97 PHILLIPS BENCH 8200 29.4 23.6 125 39.4 34.9 113 SALT RIVER SUMMIT 7760 8.2 4.4 186 18.9 22.9 83 SNAKE RIVER STATION 6920 11.0 5.2 212 31.7 27.0 117 SPRING CREEK DIVIDE 9000 22.0 24.2 91 27.5 31.7 87 THUMB DIVIDE 7980 13.3 9.3 143 24.2 23.5 103 TOGWOTEE PASS 9580 30.9 27.2 114 35.3 30.9 114 TWO OCEAN PLATEAU 9240 -M 30.5 * -M 34.2 * WILLOW CREEK 8380 29.1 24.7 118 46.3 40.3 115 ----- ----- Basin wide percent of average 128 105 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 29.3 25.4 115 29.0 25.3 115 BLACK BEAR 8170 50.0 36.1 139 49.5 48.2 103 CANYON 7870 15.4 6.8 226 24.5 19.1 128 FISHER CREEK 9100 47.5 36.3 131 45.3 44.3 102 MADISON PLATEAU 7750 31.1 19.1 163 37.8 32.2 117 NORTHEAST ENTRANCE 7350 3.3 2.9 114 16.5 16.1 102 PARKER PEAK 9400 33.0 23.8 139 30.3 21.3 142 SYLVAN LAKE 8420 21.3 20.0 106 32.1 26.7 120 THUMB DIVIDE 7980 13.3 9.3 143 24.2 23.5 103 TWO OCEAN PLATEAU 9240 -M 30.5 * -M 34.2 * WHISKEY CREEK 6800 17.9 9.3 192 29.3 25.7 114 WHITE MILL 8700 31.5 24.4 129 32.3 33.2 97 WOLVERINE 7650 3.6 2.8 129 17.3 16.8 103 ----- ----- Basin wide percent of average 137 111 WIND RIVER BURROUGHS CREEK 8750 14.7 10.1 146 21.3 21.0 101 COLD SPRINGS 9630 .0 3.1 0 13.4 15.6 86 DEER PARK 9700 16.5 17.0 97 25.1 29.0 87 HOBBS PARK 10100 17.6 16.4 107 20.2 19.1 106 LITTLE WARM 9370 7.4 7.4 100 17.7 18.5 96 SOUTH PASS 9040 13.4 13.6 99 21.8 24.6 89 ST. LAWRENCE ALT 8620 1.2 3.4 35 11.9 13.8 86 TOGWOTEE PASS 9580 30.9 27.2 114 35.3 30.9 114 TOWNSEND CREEK 8700 6.2 5.4 115 16.3 17.3 94 ----- ----- Basin wide percent of average 104 96 BIGHORN BASIN BALD MTN. 9380 20.9 22.8 92 20.6 23.5 88 BEAR TRAP MEADOW 8200 3.7 .6 617 13.0 12.6 103 BLACKWATER 9780 31.4 28.8 109 29.8 26.8 111 BONE SPRINGS DIV 9350 21.8 16.0 136 23.6 20.4 116 EVENING STAR 9200 32.8 32.2 102 40.3 32.1 126 GRAVE SPRINGS 8550 11.9 7.3 163 14.6 14.7 99 KIRWIN 9550 12.4 10.8 115 17.9 15.9 113 MARQUETTE 8760 10.1 8.7 116 15.0 15.9 94 MIDDLE POWDER 7760 15.3 10.6 144 14.4 17.6 82 OWL CREEK 8975 .0 2.1 0 9.4 9.6 98 POWDER RIVER PASS 9480 12.7 7.8 163 19.1 17.8 107 SHELL CREEK 9580 20.0 16.1 124 20.8 18.8 111 SYLVAN LAKE 8420 21.3 20.0 106 32.1 26.7 120 SYLVAN ROAD 7120 2.4 2.5 96 24.4 21.9 111 TIMBER CREEK 7950 3.5 2.1 167 12.6 12.5 101 YOUNTS PEAK 8350 16.3 15.0 109 20.3 20.4 100 ----- ----- Basin wide percent of average 116 107 SHOSHONE RIVER BLACKWATER 9780 31.4 28.8 109 29.8 26.8 111 EVENING STAR 9200 32.8 32.2 102 40.3 32.1 126 KIRWIN 9550 12.4 10.8 115 17.9 15.9 113 MARQUETTE 8760 10.1 8.7 116 15.0 15.9 94 SYLVAN LAKE 8420 21.3 20.0 106 32.1 26.7 120 SYLVAN ROAD 7120 2.4 2.5 96 24.4 21.9 111 YOUNTS PEAK 8350 16.3 15.0 109 20.3 20.4 100 ----- ----- Basin wide percent of average 107 113 POWDER-TONGUE BEAR TRAP MEADOW 8200 3.7 .6 617 13.0 12.6 103 BIG GOOSE 7990 11.5 8.9 129 18.1 14.9 121 BONE SPRINGS DIV 9350 21.8 16.0 136 23.6 20.4 116 BURGESS JUNCTION 7880 17.3 9.7 178 20.5 17.1 120 CLOUD PEAK RESERVOIR 9860 20.2 14.6 138 22.1 19.5 113 DOME LAKE 8880 13.1 10.0 131 21.2 18.9 112 GRAVE SPRINGS 8550 11.9 7.3 163 14.6 14.7 99 HANSEN SAWMILL 8360 2.7 1.9 142 13.3 12.5 106 MIDDLE POWDER 7760 15.3 10.6 144 14.4 17.6 82 POWDER RIVER PASS 9480 12.7 7.8 163 19.1 17.8 107 SUCKER CREEK 8880 18.6 9.8 190 24.3 19.7 123 TIE CREEK 6870 5.2 1.2 433 17.5 15.5 113 ----- ----- Basin wide percent of average 157 110 BELLE FOURCHE BLIND PARK 6890 .0 .0 100 16.7 16.0 104 COLE CANYON 5910 2.3 .7 329 14.7 11.3 130 NORTH RAPID CREEK 6130 4.6 .5 920 16.8 12.8 131 ----- ----- Basin wide percent of average 575 120 UPPER N. PLATTE RIVER COLUMBINE 9160 21.5 12.4 173 34.9 30.8 113 DIVIDE PEAK 8880 20.9 12.2 171 29.2 26.0 112 ELK RIVER 8700 17.3 7.0 247 28.8 24.6 117 JOE WRIGHT 10120 -M 23.6 * -M 32.6 * NORTH FRENCH CREEK 10130 34.7 32.9 105 37.3 32.2 116 OLD BATTLE 10000 40.2 35.1 115 48.0 42.3 113 SAGE CREEK BASIN 7850 7.3 7.1 103 20.7 15.1 137 SOUTH BRUSH CREEK 8440 5.2 6.2 84 21.6 22.0 98 TOWER 10500 51.4 51.3 100 51.0 47.9 106 WEBBER SPRINGS 9250 25.1 17.4 144 38.0 33.1 115 WILLOW CREEK PASS 9540 21.9 10.8 203 21.5 17.2 125 ----- ----- Basin wide percent of average 128 114 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 21.0 22.5 93 28.2 29.3 96 CASPER MTN. 7900 16.6 11.2 148 21.4 22.0 97 DEADMAN HILL 10220 22.1 17.8 124 26.0 23.0 113 DEER PARK 9700 16.5 17.0 97 25.1 29.0 87 LAPRELE CREEK 8375 3.9 3.4 115 16.7 18.4 91 RENO HILL 8400 18.3 9.2 199 26.2 22.7 115 ROACH 9700 20.9 13.0 161 28.8 24.5 118 SAND LAKE 10050 35.3 35.2 100 37.9 32.0 118 SOUTH PASS 9040 13.4 13.6 99 21.8 24.6 89 WINDY PEAK 7900 2.9 1.5 193 14.3 15.3 93 ----- ----- Basin wide percent of average 118 102 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .3 0 20.8 19.9 105 DIVIDE PEAK 8880 20.9 12.2 171 29.2 26.0 112 OLD BATTLE 10000 40.2 35.1 115 48.0 42.3 113 SANDSTONE RS 8150 9.4 3.4 276 26.1 23.5 111 WHISKEY PARK 8950 36.5 26.0 140 43.6 36.1 121 ----- ----- Basin wide percent of average 139 113 UPPER GREEN RIVER BIG SANDY OPENING 9080 8.2 8.6 95 15.9 17.3 92 BLIND BULL SUM 8650 27.3 24.6 111 20.7 26.7 78 EAST RIM DIVIDE 7930 3.1 8.8 35 12.9 15.0 86 ELKHART PARK G.S. 9400 8.6 9.1 95 14.0 17.5 80 GROS VENTRE SUMMIT 8750 10.5 9.6 109 16.9 16.5 102 GUNSIGHT PASS 9820 11.8 -M * 18.0 -M * KENDALL R.S. 7740 2.2 3.2 69 15.7 17.6 89 LOOMIS PARK 8240 7.9 9.3 85 20.5 21.2 97 NEW FORK LAKE 8340 2.1 3.5 60 11.6 14.6 79 SNIDER BASIN 8060 5.8 7.2 81 16.1 19.5 83 SPRING CREEK DIVIDE 9000 22.0 24.2 91 27.5 31.7 87 TRIPLE PEAK 8500 20.1 16.5 122 33.6 30.4 111 ----- ----- Basin wide percent of average 95 90 LOWER GREEN RIVER HAMS FORK 7840 1.7 .7 243 12.8 15.9 81 HEWINTA 9519 6.7 4.1 163 20.4 19.1 107 HICKERSON PARK 9145 .0 1.9 0 11.5 11.4 101 HOLE-IN-ROCK 9150 .0 1.5 0 12.0 11.0 109 INDIAN CREEK 9425 -M 23.3 * -M 31.1 * KELLEY R.S. 8180 10.9 8.7 125 21.3 24.9 86 STEEL CREEK PARK 10200 20.4 17.9 114 22.6 21.7 104 ----- ----- Basin wide percent of average 114 97 UPPER BEAR RIVER BUG LAKE 7950 13.8 10.3 134 20.0 23.8 84 HAYDEN FORK 9212 7.5 6.9 109 27.7 26.9 103 KELLEY R.S. 8180 10.9 8.7 125 21.3 24.9 86 LILY LAKE 9156 8.4 6.0 140 21.7 22.7 96 MONTE CRISTO 8960 23.6 22.1 107 30.5 32.3 94 SALT RIVER SUMMIT 7760 8.2 4.4 186 18.9 22.9 83 TRIAL LAKE 9992 20.1 22.8 88 28.9 31.5 92 ----- ----- Basin wide percent of average 114 91 ----------------------------------------------------------------------------- -M = Missing data * = Data may not provide a valid measure of conditions. Units = inches for the Current and Average Snow Water Equivalent and Total Precipitation values If the Basin wide percent of average 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 Average represents the snow water equivalent found at selected SNOTEL sites in or near the basin compared to the average 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. Reference period for average conditions is 1961-90. Provisional data, subject to revision. ---------------------------------------------------------------------------- -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.