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 23 , 1997 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 7.1 2.5 284 39.4 27.1 145 COTTONWOOD CREEK 7600 13.7 7.4 185 40.9 30.3 135 GRANITE CREEK 6770 10.9 4.7 232 36.0 28.9 125 GRASSY LAKE 7265 25.1 20.0 126 62.2 45.0 138 GROS VENTRE SUMMIT 8775 10.9 5.3 206 23.5 19.5 121 LEWIS LAKE DIVIDE 7860 36.0 25.0 144 64.7 45.8 141 PHILLIPS BENCH 8200 30.5 21.7 141 51.8 36.1 143 SALT RIVER SUMMIT 7600 .1 .0 * 27.7 20.8 133 SNAKE RIVER STATION 6920 .0 6.1 0 41.6 31.6 132 SPRING CREEK DIVIDE 9000 25.4 22.7 112 37.9 32.9 115 THUMB DIVIDE 7980 9.6 5.9 163 38.1 25.4 150 TOGWOTEE PASS 9580 27.1 24.9 109 40.4 34.3 118 TWO OCEAN PLATEAU 9360 39.8 24.5 162 -M 37.3 * WILLOW CREEK 8450 26.4 23.8 111 54.8 38.9 141 ----- ----- Basin wide percent of average 135 134 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 -M 22.3 * 35.5 23.9 149 BLACK BEAR 7950 -M 32.5 * -M 49.4 * CANYON 7940 6.6 4.1 161 29.9 18.1 165 FISHER CREEK 9100 47.8 34.7 138 56.7 45.6 124 MADISON PLATEAU 7750 23.1 13.5 171 46.8 32.3 145 NORTHEAST ENTRANCE 7350 .2 1.5 13 23.5 15.7 150 PARKER PEAK 9400 27.2 20.8 131 28.5 20.5 139 SYLVAN LAKE 8420 20.0 17.5 114 37.6 25.1 150 THUMB DIVIDE 7980 9.6 5.9 163 38.1 25.4 150 TWO OCEAN PLATEAU 9360 39.8 24.5 162 -M 37.3 * WHISKEY CREEK 6800 8.7 5.6 155 35.6 26.8 133 WHITE MILL 8700 33.1 22.3 148 36.9 35.4 104 WOLVERINE 7650 .3 1.6 19 19.4 17.3 112 ----- ----- Basin wide percent of average 142 136 WIND RIVER BURROUGHS CREEK 8750 11.4 4.6 248 29.4 21.6 136 CHRISTINA LAKE 9980 15.2 13.7 111 28.0 22.5 124 COLD SPRINGS 9630 .2 1.6 12 16.9 15.2 111 HOBBS PARK 10100 15.7 13.3 118 19.8 19.9 99 LITTLE WARM 9620 3.4 3.2 106 25.8 18.4 140 SOUTH PASS 9040 17.2 13.4 128 30.2 23.0 131 ST. LAWRENCE ALT 8620 .0 1.3 0 16.5 14.1 117 TOGWOTEE PASS 9580 27.1 24.9 109 40.4 34.3 118 TOWNSEND CREEK 8700 .0 4.1 0 18.5 17.7 105 ----- ----- Basin wide percent of average 113 121 BIGHORN BASIN BALD MTN. 9375 19.9 21.6 92 23.0 24.0 96 BEAR TRAP MEADOW 7900 .2 .7 29 13.8 12.9 107 BLACKWATER 9780 31.3 22.0 142 34.6 23.0 150 BONE SPRINGS DIV 9350 16.1 12.6 128 22.1 21.0 105 EVENING STAR 9200 34.2 28.0 122 47.0 28.7 164 GRAVE SPRINGS 8550 .7 -M * 14.9 15.1 99 KIRWIN 9550 -M 7.7 * -M 15.4 * LOST CREEK 8080 13.3 9.9 134 20.9 17.7 118 MARQUETTE 8760 5.1 6.0 85 16.8 16.2 104 MIDDLE POWDER 7760 6.5 8.6 76 19.3 17.2 112 OWL CREEK 8975 .2 .6 33 9.9 9.9 100 POWDER RIVER PASS 9480 9.8 3.9 251 19.3 17.2 112 SHELL CREEK 9580 -M 14.3 * 19.8 18.7 106 SYLVAN LAKE 8420 20.0 17.5 114 37.6 25.1 150 SYLVAN ROAD 8120 .2 2.6 8 30.6 20.9 146 TIMBER CREEK 7950 .1 1.4 7 11.6 12.7 91 YOUNTS PEAK 8350 16.3 12.6 129 31.0 21.4 145 ----- ----- Basin wide percent of average 117 123 SHOSHONE RIVER BLACKWATER 9780 31.3 22.0 142 34.6 23.0 150 EVENING STAR 9200 34.2 28.0 122 47.0 28.7 164 KIRWIN 9550 -M 7.7 * -M 15.4 * MARQUETTE 8760 5.1 6.0 85 16.8 16.2 104 SYLVAN LAKE 8420 20.0 17.5 114 37.6 25.1 150 SYLVAN ROAD 8120 .2 2.6 8 30.6 20.9 146 YOUNTS PEAK 8350 16.3 12.6 129 31.0 21.4 145 ----- ----- Basin wide percent of average 121 146 POWDER-TONGUE BEAR TRAP MEADOW 7900 .2 .7 29 13.8 12.9 107 BONE SPRINGS DIV 9350 16.1 12.6 128 22.1 21.0 105 BURGESS JUNCTION 7880 8.4 7.0 120 18.3 16.7 110 CLOUD PEAK RESERVOIR 9860 16.0 12.4 129 21.5 20.1 107 DOME LAKE 8880 6.9 7.3 95 20.5 19.1 107 GRAVE SPRINGS 8550 .7 -M * 14.9 15.1 99 HANSEN SAWMILL 8760 .0 2.5 0 12.9 12.2 106 LOST CREEK 8080 13.3 9.9 134 20.9 17.7 118 MIDDLE POWDER 7760 6.5 8.6 76 19.3 17.2 112 POWDER RIVER PASS 9480 9.8 3.9 251 19.3 17.2 112 SUCKER CREEK 8880 11.3 7.4 153 22.6 19.3 117 TIE CREEK 6870 .1 -M * 18.2 16.1 113 ----- ----- Basin wide percent of average 122 110 BELLE FOURCHE BLIND PARK 6890 .0 2.4 0 20.3 16.9 120 NORTH RAPID CREEK 6130 .0 -M * 19.1 -M * WARREN PEAK 6520 1.7 2.5 68 16.0 12.4 129 ----- ----- Basin wide percent of average 35 124 UPPER N. PLATTE RIVER COLUMBINE 9400 5.8 8.7 67 39.1 30.1 130 DIVIDE PEAK 8800 7.1 8.0 89 29.7 29.8 100 ELK RIVER 8700 3.8 4.6 83 31.2 23.8 131 JOE WRIGHT 10120 22.6 20.6 110 38.7 33.6 115 NORTH FRENCH CREEK 10100 28.8 23.6 122 36.9 31.1 119 OLD BATTLE 10000 40.4 30.8 131 47.0 38.5 122 SOUTH BRUSH CREEK 8400 .0 3.6 0 22.5 22.5 100 TOWER 10500 57.7 47.8 121 60.1 47.6 126 WEBBER SPRINGS 9200 19.1 15.7 122 42.7 32.8 130 WILLOW CREEK PASS 9540 14.5 6.7 216 22.3 17.5 127 ----- ----- Basin wide percent of average 117 120 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 24.1 19.2 126 35.2 26.1 135 CASPER MTN. 7900 10.6 7.6 139 27.6 21.7 127 CHRISTINA LAKE 9980 15.2 13.7 111 28.0 22.5 124 DEADMAN HILL 10220 16.4 14.6 112 25.8 23.6 109 LAPRELE CREEK 8320 .2 2.3 9 18.6 17.1 109 RENO HILL 8400 10.3 5.9 175 27.4 23.7 116 ROACH 9700 14.9 12.0 124 28.8 28.9 100 SAND LAKE 10080 36.8 30.3 121 37.4 27.4 136 SOUTH PASS 9040 17.2 13.4 128 30.2 23.0 131 WINDY PEAK 7840 .2 1.9 11 14.7 14.7 100 ----- ----- Basin wide percent of average 121 120 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .2 .0 * -M 20.2 * DIVIDE PEAK 8800 7.1 8.0 89 29.7 29.8 100 OLD BATTLE 10000 40.4 30.8 131 47.0 38.5 122 SANDSTONE RS 8150 .0 1.2 0* 26.3 25.1 105 WHISKEY PARK 8950 -M 19.0 * 41.3 37.1 111 ----- ----- Basin wide percent of average 119* 111 UPPER GREEN RIVER BIG SANDY OPENING 9100 .0 5.2 0 19.8 20.0 99 BLIND BULL SUM 8650 42.8 19.6 218 37.6 28.7 131 EAST RIM DIVIDE 7930 4.6 10.0 46 19.2 18.6 103 ELKHART PARK G.S. 9400 4.4 7.3 60 21.4 19.6 109 GROS VENTRE SUMMIT 8775 10.9 5.3 206 23.5 19.5 121 KENDALL R.S. 7740 .0 .0 100* 25.4 19.1 133 LOOMIS PARK 8240 -M 6.0 * 30.3 23.1 131 NEW FORK LAKE 8340 .1 3.3 3 15.9 17.7 90 SNIDER BASIN 8250 .8 4.5 18 22.0 18.6 118 SPRING CREEK DIVIDE 9000 25.4 22.7 112 37.9 32.9 115 TRIPLE PEAK 8500 16.1 18.1 89 44.4 37.7 118 ----- ----- Basin wide percent of average 109 116 LOWER GREEN RIVER HAMS FORK 7840 .0 .0 100* 19.2 16.4 117 HEWINTA 9500 .0 .0 100* 17.3 18.2 95 HICKERSON PARK 9150 .0 .3 0* 12.7 14.4 88 HOLE-IN-ROCK 9150 .1 .3 33* 13.4 14.4 93 INDIAN CREEK 9425 27.0 21.4 126 37.2 31.4 118 KELLEY R.S. 8180 3.7 5.3 70 35.5 23.1 154 STEEL CREEK PARK 10100 12.1 14.4 84 20.1 18.7 107 ----- ----- Basin wide percent of average 103* 114 UPPER BEAR RIVER BUG LAKE 7950 13.5 6.4 211 34.7 24.2 143 HAYDEN FORK 9400 .4 .4 100* 30.3 25.3 120 KELLEY R.S. 8180 3.7 5.3 70 35.5 23.1 154 LILY LAKE 9050 .2 3.5 6 24.0 20.2 119 MONTE CRISTO 8960 20.8 16.2 128 39.6 32.7 121 SALT RIVER SUMMIT 7600 .1 .0 * 27.7 20.8 133 TRIAL LAKE 9960 21.1 16.8 126 39.7 30.7 129 ----- ----- Basin wide percent of average 123 131 ----------------------------------------------------------------------------- -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.