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 MONDAY: MAY 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 11.5 3.7 311 39.2 26.8 146 COTTONWOOD CREEK 7600 18.0 10.7 168 40.1 29.9 134 GRANITE CREEK 6770 14.5 6.0 242 35.8 28.5 126 GRASSY LAKE 7265 30.5 23.6 129 61.7 44.5 139 GROS VENTRE SUMMIT 8775 14.6 7.7 190 23.4 19.3 121 LEWIS LAKE DIVIDE 7860 41.4 27.3 152 64.5 45.2 143 PHILLIPS BENCH 8200 33.9 23.5 144 51.2 35.6 144 SALT RIVER SUMMIT 7600 3.5 .0 * 27.1 20.5 132 SNAKE RIVER STATION 6920 2.5 8.8 28 41.4 31.2 133 SPRING CREEK DIVIDE 9000 28.0 24.4 115 37.6 32.5 116 THUMB DIVIDE 7980 14.7 8.6 171 37.9 25.1 151 TOGWOTEE PASS 9580 29.3 25.4 115 40.2 33.9 119 TWO OCEAN PLATEAU 9360 42.0 25.4 165 -M 36.8 * WILLOW CREEK 8450 31.6 25.8 122 53.8 38.4 140 ----- ----- Basin wide percent of average 141 135 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 -M 23.6 * 35.4 23.4 151 BLACK BEAR 7950 -M 34.8 * -M 48.9 * CANYON 7940 10.3 5.3 194 29.9 17.8 168 FISHER CREEK 9100 55.5 36.1 154 -M 45.0 * MADISON PLATEAU 7750 27.6 16.2 170 46.5 31.9 146 NORTHEAST ENTRANCE 7350 1.0 2.0 50 23.6 15.4 153 PARKER PEAK 9400 31.5 21.7 145 -M 20.1 * SYLVAN LAKE 8420 -M 19.1 * 37.5 24.6 152 THUMB DIVIDE 7980 14.7 8.6 171 37.9 25.1 151 TWO OCEAN PLATEAU 9360 42.0 25.4 165 -M 36.8 * WHISKEY CREEK 6800 12.9 7.5 172 35.6 26.5 134 WHITE MILL 8700 36.2 23.6 153 -M 34.9 * WOLVERINE 7650 -M 2.3 * 19.2 16.9 114 ----- ----- Basin wide percent of average 158 146 WIND RIVER BURROUGHS CREEK 8750 15.3 5.7 268 29.3 21.2 138 CHRISTINA LAKE 9980 17.4 15.4 113 27.9 22.1 126 COLD SPRINGS 9630 -M 2.2 * 16.9 14.8 114 HOBBS PARK 10100 18.1 15.1 120 19.7 19.4 102 LITTLE WARM 9620 8.1 4.3 188 25.7 18.0 143 SOUTH PASS 9040 18.4 15.0 123 30.3 22.6 134 ST. LAWRENCE ALT 8620 -M 1.9 * 16.4 13.8 119 TOGWOTEE PASS 9580 29.3 25.4 115 40.2 33.9 119 TOWNSEND CREEK 8700 2.9 5.1 57 18.4 17.3 106 ----- ----- Basin wide percent of average 127 123 BIGHORN BASIN BALD MTN. 9375 21.9 23.0 95 23.0 23.4 98 BEAR TRAP MEADOW 7900 .0 1.1 0 13.3 12.5 106 BLACKWATER 9780 38.6 23.4 165 34.4 22.6 152 BONE SPRINGS DIV 9350 19.0 14.6 130 21.8 20.5 106 EVENING STAR 9200 37.4 29.2 128 46.9 28.2 166 GRAVE SPRINGS 8550 4.6 -M * 14.8 14.6 101 KIRWIN 9550 9.5 8.9 107 20.5 15.0 137 LOST CREEK 8080 16.3 11.8 138 20.8 17.2 121 MARQUETTE 8760 8.3 6.8 122 16.5 15.7 105 MIDDLE POWDER 7760 10.5 11.3 93 18.9 16.8 112 OWL CREEK 8975 .2 .8 25 9.6 9.6 100 POWDER RIVER PASS 9480 11.7 5.0 234 18.8 16.7 113 SHELL CREEK 9580 14.9 15.6 96 19.9 18.2 109 SYLVAN LAKE 8420 -M 19.1 * 37.5 24.6 152 SYLVAN ROAD 8120 .8 3.3 24 30.7 20.5 150 TIMBER CREEK 7950 .0 2.0 0 11.6 12.2 95 YOUNTS PEAK 8350 19.6 14.2 138 -M 21.0 * ----- ----- Basin wide percent of average 122 125 SHOSHONE RIVER BLACKWATER 9780 38.6 23.4 165 34.4 22.6 152 EVENING STAR 9200 37.4 29.2 128 46.9 28.2 166 KIRWIN 9550 9.5 8.9 107 20.5 15.0 137 MARQUETTE 8760 8.3 6.8 122 16.5 15.7 105 SYLVAN LAKE 8420 -M 19.1 * 37.5 24.6 152 SYLVAN ROAD 8120 .8 3.3 24 30.7 20.5 150 YOUNTS PEAK 8350 19.6 14.2 138 -M 21.0 * ----- ----- Basin wide percent of average 133 147 POWDER-TONGUE BEAR TRAP MEADOW 7900 .0 1.1 0 13.3 12.5 106 BONE SPRINGS DIV 9350 19.0 14.6 130 21.8 20.5 106 BURGESS JUNCTION 7880 11.0 9.0 122 18.1 16.3 111 CLOUD PEAK RESERVOIR 9860 18.2 14.3 127 21.3 19.5 109 DOME LAKE 8880 9.8 8.8 111 20.5 18.6 110 GRAVE SPRINGS 8550 4.6 -M * 14.8 14.6 101 HANSEN SAWMILL 8760 .3 3.2 9 12.8 11.9 108 LOST CREEK 8080 16.3 11.8 138 20.8 17.2 121 MIDDLE POWDER 7760 10.5 11.3 93 18.9 16.8 112 POWDER RIVER PASS 9480 11.7 5.0 234 18.8 16.7 113 SUCKER CREEK 8880 14.1 9.0 157 22.1 18.8 118 TIE CREEK 6870 .1 -M * 18.1 15.7 115 ----- ----- Basin wide percent of average 126 111 BELLE FOURCHE BLIND PARK 6890 .0 3.5 0 20.1 16.4 123 NORTH RAPID CREEK 6130 .0 -M * 18.5 -M * WARREN PEAK 6520 7.5 3.5 214 -M 12.0 * ----- ----- Basin wide percent of average 107 123* UPPER N. PLATTE RIVER COLUMBINE 9400 11.4 11.4 100 38.7 29.7 130 DIVIDE PEAK 8800 11.5 10.2 113 29.3 29.3 100 ELK RIVER 8700 8.9 6.5 137 31.1 23.5 132 JOE WRIGHT 10120 27.1 22.1 123 38.0 33.0 115 NORTH FRENCH CREEK 10100 31.9 25.2 127 36.6 30.5 120 OLD BATTLE 10000 43.7 33.9 129 46.7 38.0 123 SOUTH BRUSH CREEK 8400 .0 4.7 0 21.9 22.2 99 TOWER 10500 58.9 49.3 119 59.8 46.8 128 WEBBER SPRINGS 9200 21.5 18.1 119 42.7 32.4 132 WILLOW CREEK PASS 9540 16.7 8.7 192 20.6 17.1 120 ----- ----- Basin wide percent of average 122 121 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 27.7 22.1 125 35.1 25.7 137 CASPER MTN. 7900 15.0 9.4 160 27.4 21.2 129 CHRISTINA LAKE 9980 17.4 15.4 113 27.9 22.1 126 DEADMAN HILL 10220 17.9 16.6 108 24.8 23.1 107 LAPRELE CREEK 8320 .2 2.8 7 18.4 16.7 110 RENO HILL 8400 14.3 7.3 196 26.7 23.5 114 ROACH 9700 17.8 14.0 127 28.2 28.4 99 SAND LAKE 10080 42.2 32.9 128 36.8 26.9 137 SOUTH PASS 9040 18.4 15.0 123 30.3 22.6 134 WINDY PEAK 7840 .2 2.7 7 14.3 14.2 101 ----- ----- Basin wide percent of average 124 120 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .2 .0 * -M 19.9 * DIVIDE PEAK 8800 11.5 10.2 113 29.3 29.3 100 OLD BATTLE 10000 43.7 33.9 129 46.7 38.0 123 SANDSTONE RS 8150 .0 1.8 0 26.2 24.7 106 WHISKEY PARK 8950 33.9 22.2 153 41.2 36.5 113 ----- ----- Basin wide percent of average 131 112 UPPER GREEN RIVER BIG SANDY OPENING 9100 4.1 7.5 55 19.7 19.7 100 BLIND BULL SUM 8650 45.7 21.0 218 37.2 28.4 131 EAST RIM DIVIDE 7930 7.6 11.4 67 18.8 18.4 102 ELKHART PARK G.S. 9400 8.8 8.5 104 21.3 19.4 110 GROS VENTRE SUMMIT 8775 14.6 7.7 190 23.4 19.3 121 KENDALL R.S. 7740 4.8 .0 * 25.3 18.8 135 LOOMIS PARK 8240 -M 8.6 * 30.1 22.8 132 NEW FORK LAKE 8340 .1 4.7 2 16.0 17.5 91 SNIDER BASIN 8250 5.9 6.5 91 21.8 18.4 118 SPRING CREEK DIVIDE 9000 28.0 24.4 115 37.6 32.5 116 TRIPLE PEAK 8500 21.0 19.7 107 44.0 37.2 118 ----- ----- Basin wide percent of average 122 117 LOWER GREEN RIVER HAMS FORK 7840 .0 .0 100* 19.0 16.2 117 HEWINTA 9500 .0 .0 100* 17.3 17.9 97 HICKERSON PARK 9150 .0 .5 0* 12.4 14.0 89 HOLE-IN-ROCK 9150 .1 .4 25* 12.9 14.0 92 INDIAN CREEK 9425 30.9 23.1 134 36.9 31.0 119 KELLEY R.S. 8180 8.3 7.6 109 35.1 22.8 154 STEEL CREEK PARK 10100 14.0 15.5 90 19.9 18.2 109 ----- ----- Basin wide percent of average 113* 114 UPPER BEAR RIVER BUG LAKE 7950 18.7 8.3 225 34.3 23.9 144 HAYDEN FORK 9400 .4 .5 80* 30.1 24.9 121 KELLEY R.S. 8180 8.3 7.6 109 35.1 22.8 154 LILY LAKE 9050 .2 4.6 4 23.8 19.8 120 MONTE CRISTO 8960 26.9 19.1 141 39.3 32.3 122 SALT RIVER SUMMIT 7600 3.5 .0 * 27.1 20.5 132 TRIAL LAKE 9960 24.7 18.9 131 39.2 30.3 129 ----- ----- Basin wide percent of average 134 131 ----------------------------------------------------------------------------- -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.