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 SATURDAY: APRIL 19 , 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 14.7 201 36.2 24.2 150 COTTONWOOD CREEK 7600 30.8 22.5 137 34.0 27.2 125 GRANITE CREEK 6770 27.3 16.6 164 33.5 25.7 130 GRASSY LAKE 7265 48.2 36.8 131 56.3 40.4 139 GROS VENTRE SUMMIT 8775 22.8 15.5 147 22.0 17.4 126 LEWIS LAKE DIVIDE 7860 52.9 36.2 146 -M 41.0 * PHILLIPS BENCH 8200 -M 30.6 * 47.2 32.4 146 SALT RIVER SUMMIT 7600 21.5 13.1 164 24.7 18.4 134 SNAKE RIVER STATION 6920 26.7 18.1 148 37.6 28.3 133 SPRING CREEK DIVIDE 9000 38.2 29.4 130 33.8 29.7 114 THUMB DIVIDE 7980 32.8 16.8 195 34.1 22.7 150 TOGWOTEE PASS 9580 35.2 27.3 129 35.7 30.7 116 TWO OCEAN PLATEAU 9360 47.1 26.9 175 -M 33.4 * WILLOW CREEK 8450 40.1 31.8 126 45.6 34.9 131 ----- ----- Basin wide percent of average 148 133 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 37.2 25.6 145 32.0 20.0 160 BLACK BEAR 7950 -M 40.1 * -M 44.4 * CANYON 7940 22.8 12.9 177 -M 15.5 * FISHER CREEK 9100 56.9 38.1 149 -M 40.2 * MADISON PLATEAU 7750 43.9 25.2 174 43.2 28.6 151 NORTHEAST ENTRANCE 7350 11.4 8.2 139 20.0 13.1 153 PARKER PEAK 9400 32.7 23.3 140 -M 17.2 * SYLVAN LAKE 8420 32.4 23.9 136 33.9 21.1 161 THUMB DIVIDE 7980 32.8 16.8 195 34.1 22.7 150 TWO OCEAN PLATEAU 9360 47.1 26.9 175 -M 33.4 * WHISKEY CREEK 6800 25.9 17.4 149 32.2 23.8 135 WHITE MILL 8700 39.6 25.9 153 -M 31.0 * WOLVERINE 7650 14.2 10.9 130 16.2 14.2 114 ----- ----- Basin wide percent of average 156 147 WIND RIVER BURROUGHS CREEK 8750 23.9 14.7 163 27.0 18.3 148 CHRISTINA LAKE 9980 20.8 17.0 122 24.2 18.8 129 COLD SPRINGS 9630 9.6 8.2 117 13.5 12.1 112 HOBBS PARK 10100 18.7 16.9 111 15.5 16.1 96 LITTLE WARM 9620 18.4 12.7 145 21.3 15.1 141 SOUTH PASS 9040 25.6 17.7 145 26.2 19.2 136 ST. LAWRENCE ALT 8620 9.7 6.7 145 12.7 11.6 109 TOGWOTEE PASS 9580 35.2 27.3 129 35.7 30.7 116 TOWNSEND CREEK 8700 11.0 10.2 108 14.0 14.3 98 ----- ----- Basin wide percent of average 132 122 BIGHORN BASIN BALD MTN. 9375 23.9 22.8 105 20.2 19.4 104 BEAR TRAP MEADOW 7900 7.2 6.2 116 10.8 9.6 113 BLACKWATER 9780 40.4 24.9 162 31.3 19.6 160 BONE SPRINGS DIV 9350 19.6 18.2 108 19.4 16.9 115 EVENING STAR 9200 42.5 29.6 144 41.7 24.6 170 GRAVE SPRINGS 8550 13.2 -M * 12.7 11.3 112 KIRWIN 9550 15.8 11.2 141 17.2 12.3 140 LOST CREEK 8080 18.6 15.3 122 17.6 13.7 128 MARQUETTE 8760 12.8 8.7 147 13.7 11.9 115 MIDDLE POWDER 7760 18.7 13.9 135 16.4 13.6 121 OWL CREEK 8975 8.0 4.4 182 7.5 7.3 103 POWDER RIVER PASS 9480 -M 11.3 * 15.2 13.4 113 SHELL CREEK 9580 19.4 16.4 118 16.6 14.8 112 SYLVAN LAKE 8420 32.4 23.9 136 33.9 21.1 161 SYLVAN ROAD 8120 19.7 10.1 195 27.7 17.6 157 TIMBER CREEK 7950 7.9 6.5 122 9.1 8.8 103 YOUNTS PEAK 8350 25.0 18.3 137 -M 18.3 * ----- ----- Basin wide percent of average 135 132 SHOSHONE RIVER BLACKWATER 9780 40.4 24.9 162 31.3 19.6 160 EVENING STAR 9200 42.5 29.6 144 41.7 24.6 170 KIRWIN 9550 15.8 11.2 141 17.2 12.3 140 MARQUETTE 8760 12.8 8.7 147 13.7 11.9 115 SYLVAN LAKE 8420 32.4 23.9 136 33.9 21.1 161 SYLVAN ROAD 8120 19.7 10.1 195 27.7 17.6 157 YOUNTS PEAK 8350 25.0 18.3 137 -M 18.3 * ----- ----- Basin wide percent of average 149 155 POWDER-TONGUE BEAR TRAP MEADOW 7900 7.2 6.2 116 10.8 9.6 113 BONE SPRINGS DIV 9350 19.6 18.2 108 19.4 16.9 115 BURGESS JUNCTION 7880 16.1 13.1 123 15.9 13.2 120 CLOUD PEAK RESERVOIR 9860 18.8 17.0 111 17.3 15.6 111 DOME LAKE 8880 15.5 14.9 104 16.6 15.1 110 GRAVE SPRINGS 8550 13.2 -M * 12.7 11.3 112 HANSEN SAWMILL 8760 6.7 7.4 91 9.7 9.3 104 LOST CREEK 8080 18.6 15.3 122 17.6 13.7 128 MIDDLE POWDER 7760 18.7 13.9 135 16.4 13.6 121 POWDER RIVER PASS 9480 -M 11.3 * 15.2 13.4 113 SUCKER CREEK 8880 17.4 13.4 130 18.3 15.1 121 TIE CREEK 6870 7.6 -M * 14.7 12.7 116 ----- ----- Basin wide percent of average 116 116 BELLE FOURCHE BLIND PARK 6890 9.8 11.1 88 17.1 12.3 139 NORTH RAPID CREEK 6130 11.9 -M * 15.3 -M * WARREN PEAK 6520 21.1 11.1 190 -M 9.4 * ----- ----- Basin wide percent of average 139 139* UPPER N. PLATTE RIVER COLUMBINE 9400 29.8 23.8 125 34.0 26.7 127 DIVIDE PEAK 8800 28.7 21.2 135 27.4 25.5 107 ELK RIVER 8700 28.7 19.4 148 27.7 20.9 133 JOE WRIGHT 10120 29.2 24.3 120 32.2 28.2 114 NORTH FRENCH CREEK 10100 38.1 28.5 134 31.6 26.2 121 OLD BATTLE 10000 44.0 36.4 121 41.3 33.5 123 SOUTH BRUSH CREEK 8400 13.8 12.4 111 19.2 18.9 102 TOWER 10500 57.7 49.5 117 52.7 40.4 130 WEBBER SPRINGS 9200 31.2 28.0 111 38.7 28.4 136 WILLOW CREEK PASS 9540 22.2 13.5 164 18.0 14.3 126 ----- ----- Basin wide percent of average 126 123 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 39.0 29.0 134 30.4 22.0 138 CASPER MTN. 7900 25.0 18.7 134 23.0 16.9 136 CHRISTINA LAKE 9980 20.8 17.0 122 24.2 18.8 129 DEADMAN HILL 10220 17.7 18.1 98 20.8 19.3 108 LAPRELE CREEK 8320 15.8 9.1 174 16.3 13.5 121 RENO HILL 8400 24.9 15.0 166 23.2 21.1 110 ROACH 9700 24.6 18.1 136 24.3 23.9 102 SAND LAKE 10080 41.4 36.1 115 32.4 23.0 141 SOUTH PASS 9040 25.6 17.7 145 26.2 19.2 136 WINDY PEAK 7840 10.4 9.0 116 13.4 11.1 121 ----- ----- Basin wide percent of average 131 124 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 13.2 9.4 140 30.1 17.2 175 DIVIDE PEAK 8800 28.7 21.2 135 27.4 25.5 107 OLD BATTLE 10000 44.0 36.4 121 41.3 33.5 123 SANDSTONE RS 8150 17.3 13.9 124 23.4 21.2 110 WHISKEY PARK 8950 41.5 30.4 137 36.0 31.7 114 ----- ----- Basin wide percent of average 130 123 UPPER GREEN RIVER BIG SANDY OPENING 9100 19.2 15.0 128 17.9 17.7 101 BLIND BULL SUM 8650 44.1 28.9 153 34.0 26.0 131 EAST RIM DIVIDE 7930 17.5 15.0 117 17.8 16.6 107 ELKHART PARK G.S. 9400 19.3 14.8 130 19.4 17.4 111 GROS VENTRE SUMMIT 8775 22.8 15.5 147 22.0 17.4 126 KENDALL R.S. 7740 22.1 12.5 177 24.1 16.9 143 LOOMIS PARK 8240 -M 16.4 * 28.1 20.6 136 NEW FORK LAKE 8340 14.2 10.3 138 13.9 15.8 88 SNIDER BASIN 8250 23.6 14.9 158 20.0 16.5 121 SPRING CREEK DIVIDE 9000 38.2 29.4 130 33.8 29.7 114 TRIPLE PEAK 8500 34.3 26.4 130 39.0 33.7 116 ----- ----- Basin wide percent of average 140 118 LOWER GREEN RIVER HAMS FORK 7840 14.0 5.7 246 15.5 14.6 106 HEWINTA 9500 10.3 8.1 127 15.2 15.0 101 HICKERSON PARK 9150 11.5 5.7 202 11.4 11.2 102 HOLE-IN-ROCK 9150 10.9 5.2 210 11.7 11.2 104 INDIAN CREEK 9425 42.0 30.0 140 32.8 28.2 116 KELLEY R.S. 8180 23.7 17.0 139 27.7 20.5 135 STEEL CREEK PARK 10100 17.5 18.1 97 17.2 14.8 116 ----- ----- Basin wide percent of average 145 114 UPPER BEAR RIVER BUG LAKE 7950 33.0 19.0 174 30.5 21.4 143 HAYDEN FORK 9400 16.0 9.8 163 26.2 21.4 122 KELLEY R.S. 8180 23.7 17.0 139 27.7 20.5 135 LILY LAKE 9050 16.6 11.9 139 20.5 16.7 123 MONTE CRISTO 8960 37.8 28.5 133 34.4 28.5 121 SALT RIVER SUMMIT 7600 21.5 13.1 164 24.7 18.4 134 TRIAL LAKE 9960 35.0 25.5 137 35.3 26.6 133 ----- ----- Basin wide percent of average 147 130 ----------------------------------------------------------------------------- -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.