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 TUESDAY: APRIL 26 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 25.9 14.0 185 30.5 23.9 128 COTTONWOOD CREEK 7670 35.7 21.4 167 43.6 31.2 140 GRAND TARGHEE 9260 60.7 -M * 45.0 -M * GRANITE CREEK 6770 26.3 14.4 183 29.6 22.0 135 GRASSY LAKE 7265 48.6 35.0 139 50.7 40.2 126 GROS VENTRE SUMMIT 8750 18.5 14.0 132 18.7 14.9 126 GUNSIGHT PASS 9820 23.4 -M * 21.6 -M * LEWIS LAKE DIVIDE 7850 54.7 35.7 153 44.2 41.0 108 PHILLIPS BENCH 8200 39.6 30.3 131 40.9 32.5 126 SALT RIVER SUMMIT 7760 20.7 12.2 170 26.4 21.2 125 SNAKE RIVER STATION 6920 -M 14.2 * 32.7 25.1 130 SPRING CREEK DIVIDE 9000 43.6 28.9 151 39.5 29.7 133 THUMB DIVIDE 7980 28.9 16.4 176 26.3 21.5 122 TOGWOTEE PASS 9580 37.1 27.6 134 38.5 28.3 136 TWO OCEAN PLATEAU 9240 -M 31.6 * -M 31.4 * WILLOW CREEK 8380 47.1 31.5 150 50.7 36.8 138 ----- ----- Basin wide percent of average 152 128 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 32.2 25.8 125 30.7 22.9 134 BLACK BEAR 8170 56.6 40.7 139 54.4 45.1 121 CANYON 7870 21.2 12.2 174 22.6 17.3 131 FISHER CREEK 9100 50.2 37.8 133 47.5 41.0 116 MADISON PLATEAU 7750 37.3 25.2 148 39.2 29.9 131 NORTHEAST ENTRANCE 7350 17.1 8.2 209 19.3 14.4 134 PARKER PEAK 9400 36.9 24.3 152 31.4 19.0 165 SYLVAN LAKE 8420 32.1 24.1 133 35.6 24.1 148 THUMB DIVIDE 7980 28.9 16.4 176 26.3 21.5 122 TWO OCEAN PLATEAU 9240 -M 31.6 * -M 31.4 * WHISKEY CREEK 6800 24.2 16.3 148 28.8 23.7 122 WHITE MILL 8700 35.3 26.3 134 34.9 30.5 114 WOLVERINE 7650 17.3 8.3 208 17.9 14.8 121 ----- ----- Basin wide percent of average 147 128 WIND RIVER BURROUGHS CREEK 8750 20.6 14.3 144 21.5 18.8 114 CASTLE CREEK 8400 7.9 -M * 10.5 -M * COLD SPRINGS 9630 9.9 5.1 194 11.7 13.3 88 DEER PARK 9700 21.9 19.8 111 25.6 26.1 98 HOBBS PARK 10100 18.8 17.9 105 16.7 16.2 103 LITTLE WARM 9370 15.4 11.8 131 16.2 16.2 100 SOUTH PASS 9040 19.0 18.2 104 16.8 21.9 77 ST. LAWRENCE ALT 8620 4.4 6.5 68 9.6 11.5 83 TOGWOTEE PASS 9580 37.1 27.6 134 38.5 28.3 136 TOWNSEND CREEK 8700 9.3 9.7 96 13.2 14.8 89 ----- ----- Basin wide percent of average 119 102 BIGHORN BASIN BALD MTN. 9380 29.9 23.0 130 24.5 20.6 119 BEAR TRAP MEADOW 8200 11.1 3.0 370 11.8 10.4 113 BLACKWATER 9780 36.2 28.1 129 34.2 24.0 143 BONE SPRINGS DIV 9350 26.4 18.0 147 21.3 17.6 121 EVENING STAR 9200 40.9 32.8 125 42.5 29.2 146 GRAVE SPRINGS 8550 10.9 11.1 98 11.4 12.6 90 KIRWIN 9550 16.7 12.8 130 17.3 13.7 126 MARQUETTE 8760 6.7 -M * 9.8 13.0 75 MIDDLE POWDER 7760 12.5 14.4 87 13.1 15.2 86 OWL CREEK 8975 7.6 4.1 185 8.8 7.8 113 POWDER RIVER PASS 9480 19.8 11.1 178 22.8 15.2 150 SHELL CREEK 9580 22.7 16.6 137 20.5 16.2 127 SYLVAN LAKE 8420 32.1 24.1 133 35.6 24.1 148 SYLVAN ROAD 7120 17.9 9.5 188 26.5 20.0 133 TIMBER CREEK 7950 6.6 5.1 129 8.0 9.8 82 YOUNTS PEAK 8350 23.3 18.1 129 20.6 18.4 112 ----- ----- Basin wide percent of average 136 123 SHOSHONE RIVER BLACKWATER 9780 36.2 28.1 129 34.2 24.0 143 EVENING STAR 9200 40.9 32.8 125 42.5 29.2 146 KIRWIN 9550 16.7 12.8 130 17.3 13.7 126 MARQUETTE 8760 6.7 -M * 9.8 13.0 75 SYLVAN LAKE 8420 32.1 24.1 133 35.6 24.1 148 SYLVAN ROAD 7120 17.9 9.5 188 26.5 20.0 133 YOUNTS PEAK 8350 23.3 18.1 129 20.6 18.4 112 ----- ----- Basin wide percent of average 133 131 POWDER-TONGUE BEAR TRAP MEADOW 8200 11.1 3.0 370 11.8 10.4 113 BIG GOOSE 7990 11.8 12.2 97 13.8 12.2 113 BONE SPRINGS DIV 9350 26.4 18.0 147 21.3 17.6 121 BURGESS JUNCTION 7880 14.3 13.3 108 15.1 14.8 102 CLOUD PEAK RESERVOIR 9860 20.7 16.1 129 19.4 16.3 119 DOME LAKE 8880 17.7 13.6 130 17.2 16.1 107 GRAVE SPRINGS 8550 10.9 11.1 98 11.4 12.6 90 HANSEN SAWMILL 8360 9.9 5.2 190 11.2 10.5 107 LITTLE GOOSE 8870 13.7 -M * 18.0 -M * MIDDLE POWDER 7760 12.5 14.4 87 13.1 15.2 86 POWDER RIVER PASS 9480 19.8 11.1 178 22.8 15.2 150 SOLDIER PARK 8720 11.0 -M * 12.0 -M * SUCKER CREEK 8880 17.2 13.4 128 18.7 16.7 112 TIE CREEK 6870 8.2 5.0 164 13.3 12.8 104 ----- ----- Basin wide percent of average 132 111 BELLE FOURCHE BLIND PARK 6890 10.3 5.3 194 20.2 13.6 149 COLE CANYON 5910 8.7 5.9 147 15.4 8.8 175 NORTH RAPID CREEK 6130 6.3 6.0 105 16.4 10.7 153 ----- ----- Basin wide percent of average 147 157 UPPER N. PLATTE RIVER CINNABAR PARK 9574 31.3 16.8 186 36.9 22.9 161 COLUMBINE 9160 39.6 22.6 175 42.9 28.6 150 DIVIDE PEAK 8880 31.1 20.4 152 35.8 23.7 151 ELK RIVER 8700 29.6 17.0 174 33.2 22.5 148 JOE WRIGHT 10120 45.3 24.8 183 46.0 29.2 158 NORTH FRENCH CREEK 10130 60.9 34.2 178 61.7 28.8 214 OLD BATTLE 10000 56.3 36.2 156 47.2 39.0 121 SAGE CREEK BASIN 7850 19.9 11.8 169 23.5 13.7 172 SOUTH BRUSH CREEK 8440 24.5 12.1 202 29.3 19.5 150 TOWER 10500 70.2 51.7 136 47.7 44.1 108 WEBBER SPRINGS 9250 39.2 25.9 151 45.0 30.4 148 WILLOW CREEK PASS 9540 26.3 14.3 184 23.8 15.2 157 ----- ----- Basin wide percent of average 165 149 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 41.1 28.2 146 38.0 26.2 145 CASPER MTN. 7900 12.4 17.6 70 17.0 18.6 91 DEADMAN HILL 10220 30.0 19.4 155 29.5 20.2 146 DEER PARK 9700 21.9 19.8 111 25.6 26.1 98 LAPRELE CREEK 8375 14.6 8.3 176 17.4 15.7 111 RENO HILL 8400 17.6 15.6 113 21.0 19.3 109 ROACH 9700 27.8 18.7 149 30.8 21.8 141 SAND LAKE 10050 48.1 36.5 132 -M 28.4 * SOUTH PASS 9040 19.0 18.2 104 16.8 21.9 77 WINDY PEAK 7900 11.0 6.1 180 16.4 12.9 127 ----- ----- Basin wide percent of average 129 116 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M 5.9 * 21.0 18.1 116 DIVIDE PEAK 8880 31.1 20.4 152 35.8 23.7 151 OLD BATTLE 10000 56.3 36.2 156 47.2 39.0 121 SANDSTONE RS 8150 22.5 11.1 203 32.7 21.3 154 WHISKEY PARK 8950 -M 30.7 * 47.2 32.9 143 ----- ----- Basin wide percent of average 162 136 UPPER GREEN RIVER BIG SANDY OPENING 9080 19.2 14.4 133 19.3 15.5 125 BLIND BULL SUM 8650 43.0 28.4 151 28.6 24.8 115 EAST RIM DIVIDE 7930 17.6 13.8 128 16.7 13.6 123 ELKHART PARK G.S. 9400 17.5 13.5 130 17.2 15.5 111 GROS VENTRE SUMMIT 8750 18.5 14.0 132 18.7 14.9 126 GUNSIGHT PASS 9820 23.4 -M * 21.6 -M * KENDALL R.S. 7740 15.3 11.5 133 19.6 16.2 121 LOOMIS PARK 8240 25.4 15.5 164 26.3 19.5 135 NEW FORK LAKE 8340 14.9 9.7 154 14.1 13.0 108 POCKET CREEK 9360 17.1 -M * 18.5 -M * SNIDER BASIN 8060 24.0 13.7 175 22.9 18.2 126 SPRING CREEK DIVIDE 9000 43.6 28.9 151 39.5 29.7 133 TRIPLE PEAK 8500 41.5 25.0 166 41.8 28.0 149 ----- ----- Basin wide percent of average 149 127 LOWER GREEN RIVER HAMS FORK 7840 17.3 7.4 234 18.6 14.3 130 HEWINTA 9519 16.5 10.6 156 21.9 17.3 127 HICKERSON PARK 9145 5.6 6.8 82 12.7 9.8 130 HOLE-IN-ROCK 9150 9.0 5.8 155 14.1 9.3 152 INDIAN CREEK 9425 39.4 29.1 135 32.8 28.9 113 KELLEY R.S. 8180 25.8 15.4 168 28.9 23.1 125 STEEL CREEK PARK 10200 23.3 18.3 127 25.3 19.7 128 ----- ----- Basin wide percent of average 147 126 UPPER BEAR RIVER BUG LAKE 7950 -M 19.7 * -M 21.9 * HAYDEN FORK 9212 29.4 14.5 203 36.5 24.5 149 KELLEY R.S. 8180 25.8 15.4 168 28.9 23.1 125 LILY LAKE 9156 26.5 12.5 212 27.8 20.6 135 MONTE CRISTO 8960 48.2 29.4 164 45.6 29.5 155 SALT RIVER SUMMIT 7760 20.7 12.2 170 26.4 21.2 125 TRIAL LAKE 9992 45.8 26.6 172 40.9 28.7 143 ----- ----- Basin wide percent of average 178 140 ----------------------------------------------------------------------------- -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 1971-2000. 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.