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: MAY 13 , 1997 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 16.9 5.6 302 39.0 26.2 149 COTTONWOOD CREEK 7600 25.3 14.9 170 39.7 29.3 135 GRANITE CREEK 6770 19.3 8.1 238 35.7 28.0 128 GRASSY LAKE 7265 38.3 28.2 136 61.3 43.6 141 GROS VENTRE SUMMIT 8775 18.7 10.6 176 23.2 18.9 123 LEWIS LAKE DIVIDE 7860 49.8 30.3 164 63.8 44.3 144 PHILLIPS BENCH 8200 38.6 25.9 149 51.0 35.0 146 SALT RIVER SUMMIT 7600 11.2 1.5 747 26.7 20.1 133 SNAKE RIVER STATION 6920 11.0 12.2 90 40.9 30.6 134 SPRING CREEK DIVIDE 9000 32.2 26.5 122 37.4 32.0 117 THUMB DIVIDE 7980 20.3 11.8 172 37.1 24.6 151 TOGWOTEE PASS 9580 36.0 26.3 137 39.9 33.2 120 TWO OCEAN PLATEAU 9360 45.2 26.5 171 -M 36.1 * WILLOW CREEK 8450 38.7 28.4 136 53.5 37.7 142 ----- ----- Basin wide percent of average 156 136 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 -M 25.1 * 35.3 22.7 156 BLACK BEAR 7950 -M 37.4 * -M 48.1 * CANYON 7940 15.6 7.1 220 29.6 17.3 171 FISHER CREEK 9100 55.3 37.6 147 -M 44.1 * MADISON PLATEAU 7750 34.0 19.6 173 46.2 31.2 148 NORTHEAST ENTRANCE 7350 1.3 3.1 42 23.3 14.9 156 PARKER PEAK 9400 -M 22.8 * -M 19.5 * SYLVAN LAKE 8420 -M 21.1 * 37.2 23.8 156 THUMB DIVIDE 7980 20.3 11.8 172 37.1 24.6 151 TWO OCEAN PLATEAU 9360 45.2 26.5 171 -M 36.1 * WHISKEY CREEK 6800 17.3 10.3 168 35.2 25.9 136 WHITE MILL 8700 40.1 25.1 160 -M 34.1 * WOLVERINE 7650 4.2 3.7 114 19.3 16.3 118 ----- ----- Basin wide percent of average 161 149 WIND RIVER BURROUGHS CREEK 8750 19.7 7.8 253 29.0 20.6 141 CHRISTINA LAKE 9980 20.8 17.2 121 27.8 21.4 130 COLD SPRINGS 9630 4.2 3.4 124 16.7 14.3 117 HOBBS PARK 10100 20.8 17.1 122 19.6 18.7 105 LITTLE WARM 9620 13.3 6.1 218 24.5 17.5 140 SOUTH PASS 9040 23.0 16.7 138 30.2 21.9 138 ST. LAWRENCE ALT 8620 6.3 2.8 225 16.4 13.4 122 TOGWOTEE PASS 9580 36.0 26.3 137 39.9 33.2 120 TOWNSEND CREEK 8700 8.8 6.6 133 18.4 16.7 110 ----- ----- Basin wide percent of average 147 125 BIGHORN BASIN BALD MTN. 9375 25.2 24.4 103 23.0 22.5 102 BEAR TRAP MEADOW 7900 -M 1.8 * 13.3 11.9 112 BLACKWATER 9780 41.5 24.9 167 34.4 21.9 157 BONE SPRINGS DIV 9350 21.3 16.9 126 21.4 19.7 109 EVENING STAR 9200 43.0 30.4 141 46.5 27.4 170 GRAVE SPRINGS 8550 9.7 -M * 14.8 13.9 106 KIRWIN 9550 14.1 10.3 137 20.4 14.4 142 LOST CREEK 8080 20.2 13.9 145 20.6 16.5 125 MARQUETTE 8760 11.4 7.7 148 16.3 15.0 109 MIDDLE POWDER 7760 15.4 14.1 109 19.0 16.1 118 OWL CREEK 8975 -M 1.3 * 9.7 9.1 107 POWDER RIVER PASS 9480 14.4 6.8 212 17.9 16.1 111 SHELL CREEK 9580 20.3 17.0 119 19.3 17.4 111 SYLVAN LAKE 8420 -M 21.1 * 37.2 23.8 156 SYLVAN ROAD 8120 7.6 4.6 165 30.3 19.8 153 TIMBER CREEK 7950 .6 3.0 20 11.5 11.5 100 YOUNTS PEAK 8350 22.9 16.2 141 -M 20.5 * ----- ----- Basin wide percent of average 136 128 SHOSHONE RIVER BLACKWATER 9780 41.5 24.9 167 34.4 21.9 157 EVENING STAR 9200 43.0 30.4 141 46.5 27.4 170 KIRWIN 9550 14.1 10.3 137 20.4 14.4 142 MARQUETTE 8760 11.4 7.7 148 16.3 15.0 109 SYLVAN LAKE 8420 -M 21.1 * 37.2 23.8 156 SYLVAN ROAD 8120 7.6 4.6 165 30.3 19.8 153 YOUNTS PEAK 8350 22.9 16.2 141 -M 20.5 * ----- ----- Basin wide percent of average 149 151 POWDER-TONGUE BEAR TRAP MEADOW 7900 -M 1.8 * 13.3 11.9 112 BONE SPRINGS DIV 9350 21.3 16.9 126 21.4 19.7 109 BURGESS JUNCTION 7880 14.2 11.4 125 18.0 15.7 115 CLOUD PEAK RESERVOIR 9860 21.5 16.3 132 20.9 18.7 112 DOME LAKE 8880 13.6 11.0 124 19.8 17.9 111 GRAVE SPRINGS 8550 9.7 -M * 14.8 13.9 106 HANSEN SAWMILL 8760 1.2 4.4 27 12.2 11.3 108 LOST CREEK 8080 20.2 13.9 145 20.6 16.5 125 MIDDLE POWDER 7760 15.4 14.1 109 19.0 16.1 118 POWDER RIVER PASS 9480 14.4 6.8 212 17.9 16.1 111 SUCKER CREEK 8880 17.9 11.0 163 21.9 18.0 122 TIE CREEK 6870 2.5 -M * 17.9 15.0 119 ----- ----- Basin wide percent of average 132 114 BELLE FOURCHE BLIND PARK 6890 .7 5.3 13 19.7 15.5 127 NORTH RAPID CREEK 6130 4.3 -M * 18.5 -M * WARREN PEAK 6520 14.5 5.3 274 -M 11.5 * ----- ----- Basin wide percent of average 143 127* UPPER N. PLATTE RIVER COLUMBINE 9400 19.1 15.2 126 38.5 29.2 132 DIVIDE PEAK 8800 19.4 13.5 144 29.7 28.7 103 ELK RIVER 8700 16.6 9.6 173 30.9 23.0 134 JOE WRIGHT 10120 32.9 23.8 138 37.6 32.1 117 NORTH FRENCH CREEK 10100 37.0 27.1 137 36.3 29.7 122 OLD BATTLE 10000 46.1 37.1 124 46.5 37.2 125 SOUTH BRUSH CREEK 8400 2.5 6.6 38 21.8 21.6 101 TOWER 10500 29.9 50.8 59 59.7 45.6 131 WEBBER SPRINGS 9200 28.0 21.3 131 42.5 31.8 134 WILLOW CREEK PASS 9540 20.8 11.1 187 20.3 16.5 123 ----- ----- Basin wide percent of average 117 123 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 34.7 25.5 136 34.9 25.1 139 CASPER MTN. 7900 20.9 12.1 173 27.5 20.4 135 CHRISTINA LAKE 9980 20.8 17.2 121 27.8 21.4 130 DEADMAN HILL 10220 21.3 18.7 114 24.6 22.5 109 LAPRELE CREEK 8320 5.1 3.8 134 18.3 16.0 114 RENO HILL 8400 19.5 9.3 210 26.9 23.1 116 ROACH 9700 23.6 16.3 145 27.8 27.5 101 SAND LAKE 10080 45.2 35.7 127 36.4 26.2 139 SOUTH PASS 9040 23.0 16.7 138 30.2 21.9 138 WINDY PEAK 7840 .2 4.1 5 14.5 13.6 107 ----- ----- Basin wide percent of average 134 124 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .2 .7 29* -M 19.4 * DIVIDE PEAK 8800 19.4 13.5 144 29.7 28.7 103 OLD BATTLE 10000 46.1 37.1 124 46.5 37.2 125 SANDSTONE RS 8150 2.3 3.4 68 26.2 24.2 108 WHISKEY PARK 8950 40.5 25.9 156 41.1 35.7 115 ----- ----- Basin wide percent of average 135 114 UPPER GREEN RIVER BIG SANDY OPENING 9100 10.8 10.4 104 19.8 19.3 103 BLIND BULL SUM 8650 44.2 22.4 197 37.0 27.9 133 EAST RIM DIVIDE 7930 12.1 13.0 93 18.7 18.0 104 ELKHART PARK G.S. 9400 13.4 10.4 129 21.0 19.0 111 GROS VENTRE SUMMIT 8775 18.7 10.6 176 23.2 18.9 123 KENDALL R.S. 7740 11.0 1.5 733 25.0 18.4 136 LOOMIS PARK 8240 -M 11.8 * 29.8 22.3 134 NEW FORK LAKE 8340 4.9 6.6 74 15.8 17.1 92 SNIDER BASIN 8250 13.4 9.1 147 21.9 18.0 122 SPRING CREEK DIVIDE 9000 32.2 26.5 122 37.4 32.0 117 TRIPLE PEAK 8500 27.5 21.7 127 43.9 36.5 120 ----- ----- Basin wide percent of average 142 119 LOWER GREEN RIVER HAMS FORK 7840 3.1 .8 388* 18.9 15.9 119 HEWINTA 9500 .0 .8 0* 17.2 17.3 99 HICKERSON PARK 9150 .0 .9 0 12.5 13.4 93 HOLE-IN-ROCK 9150 .1 .8 12 12.8 13.4 96 INDIAN CREEK 9425 37.8 25.5 148 37.0 30.4 122 KELLEY R.S. 8180 14.9 10.7 139 35.2 22.3 158 STEEL CREEK PARK 10100 18.6 16.9 110 19.9 17.5 114 ----- ----- Basin wide percent of average 132 118 UPPER BEAR RIVER BUG LAKE 7950 25.3 10.9 232 34.3 23.5 146 HAYDEN FORK 9400 6.9 1.5 460* 29.9 24.2 124 KELLEY R.S. 8180 14.9 10.7 139 35.2 22.3 158 LILY LAKE 9050 4.7 6.1 77 23.7 19.2 123 MONTE CRISTO 8960 35.1 22.5 156 39.3 31.6 124 SALT RIVER SUMMIT 7600 11.2 1.5 747 26.7 20.1 133 TRIAL LAKE 9960 31.1 21.4 145 38.9 29.6 131 ----- ----- Basin wide percent of average 173 134 ----------------------------------------------------------------------------- -M = Missing data * = Data may not provide a valid measure of conditions. 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.