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: MARCH 21 , 1997 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 29.6 17.1 173 33.7 21.8 155 COTTONWOOD CREEK 7600 30.7 22.6 136 31.5 24.5 129 GRANITE CREEK 6770 28.1 17.7 159 32.4 23.0 141 GRASSY LAKE 7265 45.2 34.2 132 51.8 36.1 143 GROS VENTRE SUMMIT 8775 18.5 14.9 124 20.3 15.6 130 LEWIS LAKE DIVIDE 7860 51.9 33.8 154 -M 36.7 * PHILLIPS BENCH 8200 40.7 27.8 146 44.1 29.0 152 SALT RIVER SUMMIT 7600 21.5 13.7 157 23.4 16.5 142 SNAKE RIVER STATION 6920 27.0 18.1 149 35.4 25.3 140 SPRING CREEK DIVIDE 9000 33.9 26.7 127 32.2 26.7 121 THUMB DIVIDE 7980 32.9 16.3 202 -M 20.4 * TOGWOTEE PASS 9580 33.5 23.7 141 -M 27.5 * TWO OCEAN PLATEAU 9360 43.5 25.4 171 -M 30.1 * WILLOW CREEK 8450 40.7 29.1 140 39.2 31.4 125 ----- ----- Basin wide percent of average 149 138 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 34.5 22.5 153 29.6 17.1 173 BLACK BEAR 7950 -M 36.4 * -M 38.6 * CANYON 7940 23.9 12.3 194 25.8 13.6 190 FISHER CREEK 9100 54.8 34.2 160 -M 34.8 * MADISON PLATEAU 7750 40.9 23.4 175 41.4 25.0 166 NORTHEAST ENTRANCE 7350 12.3 8.9 138 18.9 11.3 167 PARKER PEAK 9400 30.7 20.6 149 -M 14.8 * SYLVAN LAKE 8420 31.2 21.1 148 31.8 18.2 175 THUMB DIVIDE 7980 32.9 16.3 202 -M 20.4 * TWO OCEAN PLATEAU 9360 43.5 25.4 171 -M 30.1 * WHISKEY CREEK 6800 24.8 16.5 150 31.0 20.7 150 WHITE MILL 8700 37.8 24.1 157 -M 27.0 * WOLVERINE 7650 14.2 11.2 127 15.2 12.2 125 ----- ----- Basin wide percent of average 161 164 WIND RIVER BURROUGHS CREEK 8750 23.5 14.5 162 25.2 15.7 161 CHRISTINA LAKE 9980 18.8 14.5 130 21.5 15.6 138 COLD SPRINGS 9630 10.0 7.9 127 11.2 9.8 114 HOBBS PARK 10100 16.4 14.1 116 12.8 13.1 98 LITTLE WARM 9620 16.2 10.8 150 18.1 12.4 146 SOUTH PASS 9040 25.4 15.6 163 24.0 15.9 151 ST. LAWRENCE ALT 8620 8.3 7.2 115 10.1 9.4 107 TOGWOTEE PASS 9580 33.5 23.7 141 -M 27.5 * TOWNSEND CREEK 8700 9.7 9.3 104 11.1 11.5 97 ----- ----- Basin wide percent of average 138 130 BIGHORN BASIN BALD MTN. 9375 21.0 19.4 108 17.4 16.2 107 BEAR TRAP MEADOW 7900 7.7 6.7 115 8.2 7.5 109 BLACKWATER 9780 36.9 21.0 176 28.0 17.1 164 BONE SPRINGS DIV 9350 17.5 15.5 113 15.5 13.9 112 EVENING STAR 9200 40.3 25.6 157 38.8 21.4 181 GRAVE SPRINGS 8550 10.8 -M * 10.1 8.8 115 KIRWIN 9550 14.1 9.4 150 15.2 10.0 152 LOST CREEK 8080 14.1 12.6 112 14.2 10.9 130 MARQUETTE 8760 10.2 7.6 134 10.8 8.6 126 MIDDLE POWDER 7760 14.5 11.4 127 13.1 10.9 120 OWL CREEK 8975 7.5 4.3 174 6.4 5.7 112 POWDER RIVER PASS 9480 12.1 10.3 117 12.6 10.8 117 SHELL CREEK 9580 16.8 14.2 118 13.9 12.2 114 SYLVAN LAKE 8420 31.2 21.1 148 31.8 18.2 175 SYLVAN ROAD 8120 19.9 12.4 160 26.0 15.3 170 TIMBER CREEK 7950 6.7 5.8 116 7.5 6.3 119 YOUNTS PEAK 8350 23.3 16.5 141 -M 15.7 * ----- ----- Basin wide percent of average 137 139 SHOSHONE RIVER BLACKWATER 9780 36.9 21.0 176 28.0 17.1 164 EVENING STAR 9200 40.3 25.6 157 38.8 21.4 181 KIRWIN 9550 14.1 9.4 150 15.2 10.0 152 MARQUETTE 8760 10.2 7.6 134 10.8 8.6 126 SYLVAN LAKE 8420 31.2 21.1 148 31.8 18.2 175 SYLVAN ROAD 8120 19.9 12.4 160 26.0 15.3 170 YOUNTS PEAK 8350 23.3 16.5 141 -M 15.7 * ----- ----- Basin wide percent of average 155 166 POWDER-TONGUE BEAR TRAP MEADOW 7900 7.7 6.7 115 8.2 7.5 109 BONE SPRINGS DIV 9350 17.5 15.5 113 15.5 13.9 112 BURGESS JUNCTION 7880 11.9 11.1 107 12.2 10.5 116 CLOUD PEAK RESERVOIR 9860 16.7 13.7 122 13.9 12.2 114 DOME LAKE 8880 12.2 13.0 94 13.2 12.2 108 GRAVE SPRINGS 8550 10.8 -M * 10.1 8.8 115 HANSEN SAWMILL 8760 7.1 6.7 106 7.8 7.2 108 LOST CREEK 8080 14.1 12.6 112 14.2 10.9 130 MIDDLE POWDER 7760 14.5 11.4 127 13.1 10.9 120 POWDER RIVER PASS 9480 12.1 10.3 117 12.6 10.8 117 SUCKER CREEK 8880 12.9 11.4 113 13.8 12.2 113 TIE CREEK 6870 7.2 -M * 10.9 10.0 109 ----- ----- Basin wide percent of average 113 114 BELLE FOURCHE BLIND PARK 6890 9.9 10.5 94 14.0 9.1 154 NORTH RAPID CREEK 6130 -M -M * -M -M * WARREN PEAK 6520 16.2 10.5 154 -M 7.4 * ----- ----- Basin wide percent of average 124 154* UPPER N. PLATTE RIVER COLUMBINE 9400 29.2 23.9 122 29.5 23.1 128 DIVIDE PEAK 8800 24.5 19.6 125 23.8 21.3 112 ELK RIVER 8700 27.5 19.0 145 24.2 17.9 135 JOE WRIGHT 10120 20.3 20.5 99 27.4 23.3 118 NORTH FRENCH CREEK 10100 34.2 23.9 143 30.0 21.9 137 OLD BATTLE 10000 39.3 29.9 131 50.5 28.2 179 SOUTH BRUSH CREEK 8400 13.8 12.0 115 16.7 15.1 111 TOWER 10500 52.3 42.7 122 49.1 34.0 144 WEBBER SPRINGS 9200 29.3 26.1 112 34.3 23.6 145 WILLOW CREEK PASS 9540 16.5 11.0 150 14.2 11.6 122 ----- ----- Basin wide percent of average 126 136 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 33.4 23.9 140 25.2 18.0 140 CASPER MTN. 7900 19.3 14.9 130 18.2 12.9 141 CHRISTINA LAKE 9980 18.8 14.5 130 21.5 15.6 138 DEADMAN HILL 10220 15.4 15.6 99 17.3 15.4 112 LAPRELE CREEK 8320 13.7 9.8 140 13.7 10.8 127 RENO HILL 8400 20.2 13.0 155 17.6 17.6 100 ROACH 9700 22.4 16.2 138 20.8 19.8 105 SAND LAKE 10080 34.7 31.0 112 27.5 19.0 145 SOUTH PASS 9040 25.4 15.6 163 24.0 15.9 151 WINDY PEAK 7840 9.8 8.0 123 11.5 8.6 134 ----- ----- Basin wide percent of average 131 128 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 15.7 11.0 143 21.8 14.3 152 DIVIDE PEAK 8800 24.5 19.6 125 23.8 21.3 112 OLD BATTLE 10000 39.3 29.9 131 50.5 28.2 179 SANDSTONE RS 8150 19.1 14.1 135 21.7 17.5 124 WHISKEY PARK 8950 36.9 27.3 135 32.0 26.2 122 ----- ----- Basin wide percent of average 133 139 UPPER GREEN RIVER BIG SANDY OPENING 9100 19.3 13.9 139 17.2 15.9 108 BLIND BULL SUM 8650 41.4 28.1 147 32.5 23.3 139 EAST RIM DIVIDE 7930 16.9 13.5 125 17.0 14.8 115 ELKHART PARK G.S. 9400 18.1 13.2 137 18.2 15.6 117 GROS VENTRE SUMMIT 8775 18.5 14.9 124 20.3 15.6 130 KENDALL R.S. 7740 24.1 14.5 166 20.8 15.2 137 LOOMIS PARK 8240 -M 16.9 * 26.8 18.4 146 NEW FORK LAKE 8340 14.9 10.9 137 13.3 14.1 94 SNIDER BASIN 8250 23.4 14.3 164 19.1 14.8 129 SPRING CREEK DIVIDE 9000 33.9 26.7 127 32.2 26.7 121 TRIPLE PEAK 8500 36.8 24.5 150 36.6 30.4 120 ----- ----- Basin wide percent of average 142 124 LOWER GREEN RIVER HAMS FORK 7840 16.5 12.0 138 14.8 13.1 113 HEWINTA 9500 11.9 10.5 113 13.7 12.1 113 HICKERSON PARK 9150 7.5 6.2 121 8.9 8.7 102 HOLE-IN-ROCK 9150 7.3 5.9 124 9.3 8.7 107 INDIAN CREEK 9425 40.5 27.1 149 31.1 25.1 124 KELLEY R.S. 8180 23.8 16.4 145 25.3 18.3 138 STEEL CREEK PARK 10100 15.2 15.1 101 15.1 11.9 127 ----- ----- Basin wide percent of average 132 121 UPPER BEAR RIVER BUG LAKE 7950 32.8 19.7 166 29.3 18.3 160 HAYDEN FORK 9400 18.9 15.8 120 24.7 17.7 140 KELLEY R.S. 8180 23.8 16.4 145 25.3 18.3 138 LILY LAKE 9050 17.3 12.4 140 18.7 13.7 136 MONTE CRISTO 8960 36.2 27.6 131 32.6 24.0 136 SALT RIVER SUMMIT 7600 21.5 13.7 157 23.4 16.5 142 TRIAL LAKE 9960 35.3 24.2 146 34.2 22.5 152 ----- ----- Basin wide percent of average 143 144 ----------------------------------------------------------------------------- -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.