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 2 , 1997 ----------------------------------------------------------------------------- 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 10.3 251 38.8 25.3 153 COTTONWOOD CREEK 7600 33.0 19.6 168 39.5 28.3 140 GRANITE CREEK 6770 25.3 12.5 202 35.6 26.9 132 GRASSY LAKE 7265 47.9 33.4 143 61.0 42.0 145 GROS VENTRE SUMMIT 8775 23.4 13.6 172 23.1 18.2 127 LEWIS LAKE DIVIDE 7860 54.6 34.1 160 63.5 42.7 149 PHILLIPS BENCH 8200 43.3 29.2 148 50.7 33.7 150 SALT RIVER SUMMIT 7600 20.2 10.0 202 26.7 19.3 138 SNAKE RIVER STATION 6920 22.3 16.1 139 40.7 29.5 138 SPRING CREEK DIVIDE 9000 41.7 29.3 142 37.3 30.9 121 THUMB DIVIDE 7980 29.8 14.8 201 36.8 23.7 155 TOGWOTEE PASS 9580 38.4 28.1 137 39.2 32.0 123 TWO OCEAN PLATEAU 9360 50.8 27.5 185 -M 34.8 * WILLOW CREEK 8450 45.5 31.6 144 53.3 36.3 147 ----- ----- Basin wide percent of average 162 140 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 -M 25.9 * 34.3 21.3 161 BLACK BEAR 7950 -M 39.6 * -M 46.6 * CANYON 7940 22.0 10.6 208 -M 16.4 * FISHER CREEK 9100 60.7 38.6 157 -M 42.4 * MADISON PLATEAU 7750 42.6 23.5 181 45.9 30.0 153 NORTHEAST ENTRANCE 7350 8.8 5.7 154 22.7 14.0 162 PARKER PEAK 9400 -M 23.6 * -M 18.3 * SYLVAN LAKE 8420 32.3 23.6 137 36.8 22.4 164 THUMB DIVIDE 7980 29.8 14.8 201 36.8 23.7 155 TWO OCEAN PLATEAU 9360 50.8 27.5 185 -M 34.8 * WHISKEY CREEK 6800 22.8 14.8 154 34.9 25.0 140 WHITE MILL 8700 42.7 26.2 163 -M 32.7 * WOLVERINE 7650 12.7 7.7 165 18.1 15.3 118 ----- ----- Basin wide percent of average 168 151 WIND RIVER BURROUGHS CREEK 8750 24.2 12.5 194 28.6 19.5 147 CHRISTINA LAKE 9980 22.7 17.9 127 27.2 20.2 135 COLD SPRINGS 9630 9.2 6.5 142 16.4 13.2 124 HOBBS PARK 10100 22.9 17.9 128 19.2 17.4 110 LITTLE WARM 9620 19.7 10.0 197 24.3 16.4 148 SOUTH PASS 9040 28.1 18.0 156 29.6 20.7 143 ST. LAWRENCE ALT 8620 11.4 5.2 219 16.0 12.6 127 TOGWOTEE PASS 9580 38.4 28.1 137 39.2 32.0 123 TOWNSEND CREEK 8700 13.3 9.3 143 18.1 15.6 116 ----- ----- Basin wide percent of average 151 130 BIGHORN BASIN BALD MTN. 9375 26.4 24.1 110 22.4 20.9 107 BEAR TRAP MEADOW 7900 -M 4.0 * 12.6 10.7 118 BLACKWATER 9780 43.1 25.6 168 33.7 20.7 163 BONE SPRINGS DIV 9350 -M 18.3 * 20.8 18.2 114 EVENING STAR 9200 45.4 30.8 147 45.8 26.0 176 GRAVE SPRINGS 8550 13.5 -M * 14.7 12.5 118 KIRWIN 9550 17.6 11.6 152 19.5 13.4 146 LOST CREEK 8080 -M 15.6 * 20.2 15.1 134 MARQUETTE 8760 -M 8.5 * 15.9 13.6 117 MIDDLE POWDER 7760 -M 14.7 * 18.6 14.9 125 OWL CREEK 8975 7.0 3.2 219 9.0 8.2 110 POWDER RIVER PASS 9480 -M 10.2 * 17.2 14.8 116 SHELL CREEK 9580 21.1 17.0 124 18.9 16.0 118 SYLVAN LAKE 8420 32.3 23.6 137 36.8 22.4 164 SYLVAN ROAD 8120 16.7 7.6 220 30.2 18.7 161 TIMBER CREEK 7950 7.3 5.8 126 11.3 10.1 112 YOUNTS PEAK 8350 25.0 18.1 138 -M 19.4 * ----- ----- Basin wide percent of average 145 136 SHOSHONE RIVER BLACKWATER 9780 43.1 25.6 168 33.7 20.7 163 EVENING STAR 9200 45.4 30.8 147 45.8 26.0 176 KIRWIN 9550 17.6 11.6 152 19.5 13.4 146 MARQUETTE 8760 -M 8.5 * 15.9 13.6 117 SYLVAN LAKE 8420 32.3 23.6 137 36.8 22.4 164 SYLVAN ROAD 8120 16.7 7.6 220 30.2 18.7 161 YOUNTS PEAK 8350 25.0 18.1 138 -M 19.4 * ----- ----- Basin wide percent of average 154 158 POWDER-TONGUE BEAR TRAP MEADOW 7900 -M 4.0 * 12.6 10.7 118 BONE SPRINGS DIV 9350 -M 18.3 * 20.8 18.2 114 BURGESS JUNCTION 7880 17.3 13.3 130 17.5 14.5 121 CLOUD PEAK RESERVOIR 9860 -M 17.6 * -M 17.2 * DOME LAKE 8880 -M 14.7 * -M 16.5 * GRAVE SPRINGS 8550 13.5 -M * 14.7 12.5 118 HANSEN SAWMILL 8760 -M 6.7 * 11.7 10.4 112 LOST CREEK 8080 -M 15.6 * 20.2 15.1 134 MIDDLE POWDER 7760 -M 14.7 * 18.6 14.9 125 POWDER RIVER PASS 9480 -M 10.2 * 17.2 14.8 116 SUCKER CREEK 8880 -M 13.6 * -M 16.6 * TIE CREEK 6870 8.1 -M * 17.4 13.9 125 ----- ----- Basin wide percent of average 130* 121 BELLE FOURCHE BLIND PARK 6890 8.0 9.2 87 19.2 13.9 138 NORTH RAPID CREEK 6130 10.6 -M * 18.1 -M * WARREN PEAK 6520 20.8 9.2 226 -M 10.4 * ----- ----- Basin wide percent of average 157 138* UPPER N. PLATTE RIVER COLUMBINE 9400 29.6 21.5 138 37.7 28.2 134 DIVIDE PEAK 8800 27.8 18.8 148 29.4 27.4 107 ELK RIVER 8700 26.0 15.7 166 30.3 22.2 136 JOE WRIGHT 10120 35.5 24.6 144 36.8 30.4 121 NORTH FRENCH CREEK 10100 40.6 29.2 139 35.6 28.1 127 OLD BATTLE 10000 49.3 38.1 129 44.7 35.8 125 SOUTH BRUSH CREEK 8400 10.8 10.3 105 21.3 20.7 103 TOWER 10500 31.2 51.1 61 57.4 43.4 132 WEBBER SPRINGS 9200 34.7 25.6 136 42.0 30.7 137 WILLOW CREEK PASS 9540 -M 13.3 * 19.7 15.5 127 ----- ----- Basin wide percent of average 122 126 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 42.4 28.6 148 34.3 23.9 144 CASPER MTN. 7900 26.6 17.3 154 26.9 18.9 142 CHRISTINA LAKE 9980 22.7 17.9 127 27.2 20.2 135 DEADMAN HILL 10220 23.7 19.1 124 24.1 21.2 114 LAPRELE CREEK 8320 12.7 6.1 208 17.6 14.8 119 RENO HILL 8400 25.5 13.1 195 26.2 22.5 116 ROACH 9700 26.5 18.0 147 27.5 25.9 106 SAND LAKE 10080 45.2 37.1 122 34.6 24.9 139 SOUTH PASS 9040 28.1 18.0 156 29.6 20.7 143 WINDY PEAK 7840 6.7 7.6 88 13.9 12.3 113 ----- ----- Basin wide percent of average 142 128 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 5.7 4.5 127 31.6 18.6 170 DIVIDE PEAK 8800 27.8 18.8 148 29.4 27.4 107 OLD BATTLE 10000 49.3 38.1 129 44.7 35.8 125 SANDSTONE RS 8150 13.3 9.3 143 25.9 23.1 112 WHISKEY PARK 8950 45.2 29.3 154 40.2 34.1 118 ----- ----- Basin wide percent of average 141 124 UPPER GREEN RIVER BIG SANDY OPENING 9100 17.9 13.6 132 19.2 18.6 103 BLIND BULL SUM 8650 44.5 22.7 196 36.8 27.0 136 EAST RIM DIVIDE 7930 16.5 14.7 112 18.8 17.4 108 ELKHART PARK G.S. 9400 18.7 13.7 136 20.8 18.3 114 GROS VENTRE SUMMIT 8775 23.4 13.6 172 23.1 18.2 127 KENDALL R.S. 7740 19.1 9.8 195 25.0 17.7 141 LOOMIS PARK 8240 -M 14.8 * 29.7 21.5 138 NEW FORK LAKE 8340 12.4 8.9 139 14.6 16.5 88 SNIDER BASIN 8250 21.1 12.7 166 21.9 17.3 127 SPRING CREEK DIVIDE 9000 41.7 29.3 142 37.3 30.9 121 TRIPLE PEAK 8500 35.1 24.7 142 43.7 35.1 125 ----- ----- Basin wide percent of average 153 122 LOWER GREEN RIVER HAMS FORK 7840 13.0 5.3 245 18.8 15.3 123 HEWINTA 9500 9.0 4.9 184 17.2 16.4 105 HICKERSON PARK 9150 9.6 2.7 356 12.5 12.4 101 HOLE-IN-ROCK 9150 8.1 2.2 368 12.9 12.4 104 INDIAN CREEK 9425 43.7 28.6 153 36.8 29.3 126 KELLEY R.S. 8180 23.1 14.6 158 35.1 21.4 164 STEEL CREEK PARK 10100 20.9 18.7 112 19.8 16.2 122 ----- ----- Basin wide percent of average 165 124 UPPER BEAR RIVER BUG LAKE 7950 34.6 15.6 222 34.4 22.7 152 HAYDEN FORK 9400 15.4 6.2 248 29.9 23.1 129 KELLEY R.S. 8180 23.1 14.6 158 35.1 21.4 164 LILY LAKE 9050 16.5 8.5 194 23.7 18.1 131 MONTE CRISTO 8960 43.0 25.9 166 39.2 30.4 129 SALT RIVER SUMMIT 7600 20.2 10.0 202 26.7 19.3 138 TRIAL LAKE 9960 36.9 23.8 155 37.0 28.4 130 ----- ----- Basin wide percent of average 181 138 ----------------------------------------------------------------------------- -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.