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 WEDNESDAY: MAY 14 , 1997 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 16.0 5.2 308 39.1 26.3 149 COTTONWOOD CREEK 7600 23.9 14.4 166 39.7 29.4 135 GRANITE CREEK 6770 18.6 7.7 242 35.7 28.1 127 GRASSY LAKE 7265 37.3 27.7 135 61.3 43.7 140 GROS VENTRE SUMMIT 8775 17.9 10.4 172 23.2 18.9 123 LEWIS LAKE DIVIDE 7860 48.4 29.9 162 63.8 44.5 143 PHILLIPS BENCH 8200 38.0 25.6 148 51.0 35.1 145 SALT RIVER SUMMIT 7600 9.9 .8 1238* 26.7 20.1 133 SNAKE RIVER STATION 6920 9.7 11.9 82 40.9 30.7 133 SPRING CREEK DIVIDE 9000 31.5 26.3 120 37.4 32.1 117 THUMB DIVIDE 7980 19.6 11.5 170 37.1 24.6 151 TOGWOTEE PASS 9580 34.9 26.2 133 39.9 33.3 120 TWO OCEAN PLATEAU 9360 44.9 26.4 170 -M 36.3 * WILLOW CREEK 8450 37.5 28.1 133 53.5 37.8 142 ----- ----- Basin wide percent of average 154 136 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 -M 25.0 * 35.3 22.8 155 BLACK BEAR 7950 -M 37.2 * -M 48.2 * CANYON 7940 14.6 6.8 215 29.6 17.4 170 FISHER CREEK 9100 54.4 37.5 145 -M 44.2 * MADISON PLATEAU 7750 32.7 19.2 170 46.2 31.3 148 NORTHEAST ENTRANCE 7350 -M 2.8 * 23.3 15.0 155 PARKER PEAK 9400 35.1 22.8 154 -M 19.6 * SYLVAN LAKE 8420 -M 20.8 * 37.2 24.0 155 THUMB DIVIDE 7980 19.6 11.5 170 37.1 24.6 151 TWO OCEAN PLATEAU 9360 44.9 26.4 170 -M 36.3 * WHISKEY CREEK 6800 16.5 9.9 167 35.2 26.0 135 WHITE MILL 8700 39.3 25.0 157 -M 34.3 * WOLVERINE 7650 3.1 3.4 91 19.0 16.4 116 ----- ----- Basin wide percent of average 160 148 WIND RIVER BURROUGHS CREEK 8750 19.1 7.3 262 29.0 20.7 140 CHRISTINA LAKE 9980 20.3 17.2 118 27.8 21.5 129 COLD SPRINGS 9630 3.3 3.1 106 16.7 14.4 116 HOBBS PARK 10100 20.5 17.0 121 19.6 18.8 104 LITTLE WARM 9620 12.2 5.8 210 24.5 17.6 139 SOUTH PASS 9040 22.2 16.6 134 30.2 22.0 137 ST. LAWRENCE ALT 8620 5.1 2.6 196 16.4 13.5 121 TOGWOTEE PASS 9580 34.9 26.2 133 39.9 33.3 120 TOWNSEND CREEK 8700 7.9 6.3 125 18.4 16.8 110 ----- ----- Basin wide percent of average 143 125 BIGHORN BASIN BALD MTN. 9375 24.8 24.4 102 23.0 22.7 101 BEAR TRAP MEADOW 7900 -M 1.6 * 13.2 12.0 110 BLACKWATER 9780 41.0 24.9 165 34.3 22.0 156 BONE SPRINGS DIV 9350 21.1 16.7 126 21.4 19.8 108 EVENING STAR 9200 42.2 30.3 139 46.7 27.6 169 GRAVE SPRINGS 8550 8.9 -M * 14.8 14.0 106 KIRWIN 9550 13.5 10.2 132 20.4 14.5 141 LOST CREEK 8080 19.6 13.8 142 20.5 16.6 123 MARQUETTE 8760 10.8 7.7 140 16.3 15.1 108 MIDDLE POWDER 7760 14.3 14.1 101 19.0 16.2 117 OWL CREEK 8975 -M 1.2 * 9.6 9.2 104 POWDER RIVER PASS 9480 13.8 6.5 212 18.0 16.2 111 SHELL CREEK 9580 18.9 17.0 111 19.4 17.5 111 SYLVAN LAKE 8420 -M 20.8 * 37.2 24.0 155 SYLVAN ROAD 8120 6.6 4.3 153 30.4 19.9 153 TIMBER CREEK 7950 -M 2.8 * 11.5 11.6 99 YOUNTS PEAK 8350 22.4 16.0 140 -M 20.6 * ----- ----- Basin wide percent of average 134 128 SHOSHONE RIVER BLACKWATER 9780 41.0 24.9 165 34.3 22.0 156 EVENING STAR 9200 42.2 30.3 139 46.7 27.6 169 KIRWIN 9550 13.5 10.2 132 20.4 14.5 141 MARQUETTE 8760 10.8 7.7 140 16.3 15.1 108 SYLVAN LAKE 8420 -M 20.8 * 37.2 24.0 155 SYLVAN ROAD 8120 6.6 4.3 153 30.4 19.9 153 YOUNTS PEAK 8350 22.4 16.0 140 -M 20.6 * ----- ----- Basin wide percent of average 146 151 POWDER-TONGUE BEAR TRAP MEADOW 7900 -M 1.6 * 13.2 12.0 110 BONE SPRINGS DIV 9350 21.1 16.7 126 21.4 19.8 108 BURGESS JUNCTION 7880 13.7 11.3 121 17.9 15.8 113 CLOUD PEAK RESERVOIR 9860 21.0 16.2 130 20.9 18.9 111 DOME LAKE 8880 13.1 10.6 124 19.8 18.0 110 GRAVE SPRINGS 8550 8.9 -M * 14.8 14.0 106 HANSEN SAWMILL 8760 -M 4.2 * 12.2 11.4 107 LOST CREEK 8080 19.6 13.8 142 20.5 16.6 123 MIDDLE POWDER 7760 14.3 14.1 101 19.0 16.2 117 POWDER RIVER PASS 9480 13.8 6.5 212 18.0 16.2 111 SUCKER CREEK 8880 17.3 10.7 162 21.8 18.2 120 TIE CREEK 6870 1.5 -M * 17.9 15.1 119 ----- ----- Basin wide percent of average 134 113 BELLE FOURCHE BLIND PARK 6890 .0 5.0 0 19.8 15.6 127 NORTH RAPID CREEK 6130 2.9 -M * 18.5 -M * WARREN PEAK 6520 13.5 5.0 270 -M 11.6 * ----- ----- Basin wide percent of average 135 127* UPPER N. PLATTE RIVER COLUMBINE 9400 17.9 14.7 122 38.5 29.3 131 DIVIDE PEAK 8800 18.1 13.0 139 29.5 28.8 102 ELK RIVER 8700 15.5 9.1 170 30.9 23.1 134 JOE WRIGHT 10120 32.3 23.8 136 37.6 32.2 117 NORTH FRENCH CREEK 10100 36.1 26.9 134 36.4 29.8 122 OLD BATTLE 10000 45.5 37.0 123 46.5 37.3 125 SOUTH BRUSH CREEK 8400 1.4 6.2 23 21.8 21.7 100 TOWER 10500 68.1 50.8 134 59.7 45.8 130 WEBBER SPRINGS 9200 27.2 20.9 130 42.5 31.9 133 WILLOW CREEK PASS 9540 20.1 10.9 184 20.3 16.6 122 ----- ----- Basin wide percent of average 132 123 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 33.3 25.2 132 34.9 25.2 138 CASPER MTN. 7900 19.9 11.7 170 27.5 20.5 134 CHRISTINA LAKE 9980 20.3 17.2 118 27.8 21.5 129 DEADMAN HILL 10220 20.6 18.6 111 24.6 22.6 109 LAPRELE CREEK 8320 3.8 3.6 106 18.3 16.1 114 RENO HILL 8400 18.8 8.9 211 26.8 23.2 116 ROACH 9700 22.6 16.2 140 27.8 27.6 101 SAND LAKE 10080 44.9 35.5 126 36.8 26.3 140 SOUTH PASS 9040 22.2 16.6 134 30.2 22.0 137 WINDY PEAK 7840 .2 3.8 5 14.3 13.7 104 ----- ----- Basin wide percent of average 131 123 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .3 .3 100* -M 19.5 * DIVIDE PEAK 8800 18.1 13.0 139 29.5 28.8 102 OLD BATTLE 10000 45.5 37.0 123 46.5 37.3 125 SANDSTONE RS 8150 .8 2.8 29 26.3 24.3 108 WHISKEY PARK 8950 39.2 25.6 153 41.1 35.8 115 ----- ----- Basin wide percent of average 132 114 UPPER GREEN RIVER BIG SANDY OPENING 9100 9.6 10.1 95 19.8 19.4 102 BLIND BULL SUM 8650 44.1 22.4 197 37.0 28.0 132 EAST RIM DIVIDE 7930 11.4 12.9 88 18.7 18.1 103 ELKHART PARK G.S. 9400 12.5 10.1 124 21.0 19.0 111 GROS VENTRE SUMMIT 8775 17.9 10.4 172 23.2 18.9 123 KENDALL R.S. 7740 10.1 .8 1262* 25.0 18.5 135 LOOMIS PARK 8240 -M 11.6 * 29.8 22.4 133 NEW FORK LAKE 8340 3.9 6.4 61 15.9 17.2 92 SNIDER BASIN 8250 12.4 8.8 141 21.8 18.0 121 SPRING CREEK DIVIDE 9000 31.5 26.3 120 37.4 32.1 117 TRIPLE PEAK 8500 26.5 21.5 123 43.9 36.6 120 ----- ----- Basin wide percent of average 139 118 LOWER GREEN RIVER HAMS FORK 7840 1.9 .4 475* 19.0 15.9 119 HEWINTA 9500 .0 .4 0* 17.1 17.4 98 HICKERSON PARK 9150 .0 .8 0 12.5 13.5 93 HOLE-IN-ROCK 9150 .1 .6 17* 12.8 13.5 95 INDIAN CREEK 9425 36.7 25.2 146 37.1 30.5 122 KELLEY R.S. 8180 13.9 10.4 134 35.3 22.3 158 STEEL CREEK PARK 10100 17.9 16.8 107 19.9 17.7 112 ----- ----- Basin wide percent of average 129 118 UPPER BEAR RIVER BUG LAKE 7950 24.6 10.5 234 34.3 23.6 145 HAYDEN FORK 9400 5.7 1.1 518* 29.9 24.3 123 KELLEY R.S. 8180 13.9 10.4 134 35.3 22.3 158 LILY LAKE 9050 3.3 5.9 56 23.7 19.3 123 MONTE CRISTO 8960 33.8 22.2 152 39.3 31.7 124 SALT RIVER SUMMIT 7600 9.9 .8 1238* 26.7 20.1 133 TRIAL LAKE 9960 30.1 21.2 142 38.9 29.7 131 ----- ----- Basin wide percent of average 168 133 ----------------------------------------------------------------------------- -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.