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 SUNDAY: MAY 16 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 12.5 4.6 272 30.4 26.7 115 COTTONWOOD CREEK 7600 24.0 13.2 182 36.5 29.7 123 GRANITE CREEK 6770 13.4 7.0 191 27.7 28.4 98 GRASSY LAKE 7265 39.3 26.4 149 49.3 44.2 112 GROS VENTRE SUMMIT 8775 16.4 9.6 171 20.2 19.2 106 LEWIS LAKE DIVIDE 7860 38.9 29.2 134 45.4 44.8 102 PHILLIPS BENCH 8200 33.5 24.9 135 37.2 35.3 106 SALT RIVER SUMMIT 7600 11.9 .0 * 22.9 20.4 113 SNAKE RIVER STATION 6920 10.5 11.0 97 29.9 31.0 97 SPRING CREEK DIVIDE 9000 38.3 25.7 150 36.3 32.3 113 THUMB DIVIDE 7980 18.2 10.6 172 27.7 24.9 111 TOGWOTEE PASS 9580 -M 25.9 * 35.3 33.7 106 TWO OCEAN PLATEAU 9360 42.5 26.2 163 36.4 36.5 100 WILLOW CREEK 8450 33.2 27.4 122 48.9 38.2 129 ----- ----- Basin wide percent of average 149 109 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 29.2 24.7 119 27.9 23.2 121 BLACK BEAR 7950 57.9 36.5 159 54.9 48.5 114 CANYON 7940 13.4 6.3 212 22.5 17.7 128 FISHER CREEK 9100 42.9 37.2 116 43.7 44.7 98 MADISON PLATEAU 7750 -M 18.4 * 38.9 31.7 124 NORTHEAST ENTRANCE 7350 2.5 2.5 100 17.7 15.2 116 PARKER PEAK 9400 27.7 22.5 123 -M 19.9 * SYLVAN LAKE 8420 24.9 20.4 123 33.3 24.4 138 THUMB DIVIDE 7980 18.2 10.6 172 27.7 24.9 111 TWO OCEAN PLATEAU 9360 42.5 26.2 163 36.4 36.5 100 WHISKEY CREEK 6800 19.0 9.1 209 30.0 26.4 115 WHITE MILL 8700 31.4 24.7 128 29.9 34.7 87 WOLVERINE 7650 .9 2.9 28 15.5 16.7 93 ----- ----- Basin wide percent of average 139 110 WIND RIVER BURROUGHS CREEK 8750 18.5 6.8 277 23.0 21.0 110 COLD SPRINGS 9630 18.5 2.8 686 24.5 14.6 168 DEER PARK 9700 26.9 -M * 33.8 -M * HOBBS PARK 10100 30.5 16.5 185 28.5 19.2 150 LITTLE WARM 9620 20.2 5.3 389 25.0 17.9 141 SOUTH PASS 9040 24.9 16.2 154 30.9 22.4 139 ST. LAWRENCE ALT 8620 12.2 2.3 531 21.4 13.7 157 TOGWOTEE PASS 9580 -M 25.9 * 35.3 33.7 106 TOWNSEND CREEK 8700 18.0 6.0 306 26.0 17.2 153 ----- ----- Basin wide percent of average 258 135 BIGHORN BASIN BALD MTN. 9375 26.4 24.2 110 25.9 23.0 113 BEAR TRAP MEADOW 7900 1.0 1.4 72 16.9 12.2 139 BLACKWATER 9780 36.8 24.5 150 30.4 22.4 137 BONE SPRINGS DIV 9350 23.7 16.2 146 25.4 20.2 127 EVENING STAR 9200 36.9 30.2 123 40.7 27.9 146 GRAVE SPRINGS 8550 11.1 10.5 106 18.5 14.4 130 KIRWIN 9550 17.9 10.0 180 21.2 14.9 143 MARQUETTE 8760 18.4 7.5 248 20.9 15.5 136 MIDDLE POWDER 7760 17.4 13.5 130 23.2 16.5 141 OWL CREEK 8975 10.7 1.0 1070 14.9 9.5 158 POWDER RIVER PASS 9480 13.0 6.0 217 22.4 16.4 137 SHELL CREEK 9580 20.4 16.7 123 21.4 17.9 120 SYLVAN LAKE 8420 24.9 20.4 123 33.3 24.4 138 SYLVAN ROAD 8120 7.0 3.9 177 22.5 20.2 112 TIMBER CREEK 7950 10.7 2.4 446 17.5 12.0 148 YOUNTS PEAK 8350 21.0 15.5 136 22.4 20.9 108 ----- ----- Basin wide percent of average 146 132 SHOSHONE RIVER BLACKWATER 9780 36.8 24.5 150 30.4 22.4 137 EVENING STAR 9200 36.9 30.2 123 40.7 27.9 146 KIRWIN 9550 17.9 10.0 180 21.2 14.9 143 MARQUETTE 8760 18.4 7.5 248 20.9 15.5 136 SYLVAN LAKE 8420 24.9 20.4 123 33.3 24.4 138 SYLVAN ROAD 8120 7.0 3.9 177 22.5 20.2 112 YOUNTS PEAK 8350 21.0 15.5 136 22.4 20.9 108 ----- ----- Basin wide percent of average 146 132 POWDER-TONGUE BEAR TRAP MEADOW 7900 1.0 1.4 72 16.9 12.2 139 BIG GOOSE 7990 10.4 -M * 19.2 -M * BONE SPRINGS DIV 9350 23.7 16.2 146 25.4 20.2 127 BURGESS JUNCTION 7880 12.4 10.6 117 18.5 16.0 116 CLOUD PEAK RESERVOIR 9860 24.9 15.7 159 25.4 19.2 133 DOME LAKE 8880 -M 10.0 * 18.5 18.4 102 GRAVE SPRINGS 8550 11.1 10.5 106 18.5 14.4 130 HANSEN SAWMILL 8760 3.8 3.9 98 17.5 11.7 150 MIDDLE POWDER 7760 17.4 13.5 130 23.2 16.5 141 POWDER RIVER PASS 9480 13.0 6.0 217 22.4 16.4 137 SUCKER CREEK 8880 16.2 10.2 158 23.0 18.5 125 TIE CREEK 6870 4.3 -M * 19.2 15.5 125 ----- ----- Basin wide percent of average 141 128 BELLE FOURCHE BLIND PARK 6890 .5 4.5 10 20.2 16.0 127 NORTH RAPID CREEK 6130 .0 -M * 17.7 -M * WARREN PEAK 6520 .0 4.5 21 -M 11.9 * ----- ----- Basin wide percent of average 15 127* UPPER N. PLATTE RIVER COLUMBINE 9400 13.1 13.5 98 29.9 29.5 102 DIVIDE PEAK 8800 20.4 12.0 170 32.8 29.0 113 ELK RIVER 8700 10.7 8.1 133 29.5 23.4 127 JOE WRIGHT 10120 23.9 23.4 103 33.9 32.7 104 NORTH FRENCH CREEK 10100 41.3 26.4 157 39.9 30.2 133 OLD BATTLE 10000 41.2 36.3 114 48.3 37.7 129 SOUTH BRUSH CREEK 8400 10.0 5.8 176 26.7 22.0 122 TOWER 10500 -M 50.5 * -M 46.3 * WEBBER SPRINGS 9200 20.7 20.0 104 34.8 32.3 108 WILLOW CREEK PASS 9540 15.1 10.4 147 16.7 16.9 99 ----- ----- Basin wide percent of average 127 116 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 28.2 24.2 117 32.8 25.4 130 CASPER MTN. 7900 11.9 10.9 110 23.9 20.9 115 DEADMAN HILL 10220 21.4 18.2 118 24.4 22.9 108 DEER PARK 9700 26.9 -M * 33.8 -M * LAPRELE CREEK 8320 .0 3.3 0 21.2 16.4 129 RENO HILL 8400 13.2 8.4 160 27.0 23.4 116 ROACH 9700 -M 15.5 * 26.4 28.0 95 SAND LAKE 10080 46.3 34.8 133 38.8 26.7 146 SOUTH PASS 9040 24.9 16.2 154 30.9 22.4 139 WINDY PEAK 7840 .0 3.3 0 18.7 14.0 135 ----- ----- Basin wide percent of average 123 123 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 100* 23.9 19.7 122 DIVIDE PEAK 8800 20.4 12.0 170 32.8 29.0 113 OLD BATTLE 10000 41.2 36.3 114 48.3 37.7 129 SANDSTONE RS 8150 3.0 2.3 137 27.0 24.5 111 WHISKEY PARK 8950 32.0 24.7 131 39.3 36.2 109 ----- ----- Basin wide percent of average 129 117 UPPER GREEN RIVER BIG SANDY OPENING 9100 15.0 9.4 161 19.7 19.7 100 BLIND BULL SUM 8650 33.5 22.2 152 28.5 28.2 102 EAST RIM DIVIDE 7930 14.6 12.5 118 18.4 18.4 100 ELKHART PARK G.S. 9400 16.2 9.5 170 19.7 19.2 103 GROS VENTRE SUMMIT 8775 16.4 9.6 171 20.2 19.2 106 KENDALL R.S. 7740 9.0 .0 * 20.4 18.7 110 LOOMIS PARK 8240 -M 10.7 * 25.2 22.7 112 NEW FORK LAKE 8340 10.5 6.0 178 16.4 17.4 94 SNIDER BASIN 8250 17.0 8.0 213 23.2 18.2 127 SPRING CREEK DIVIDE 9000 38.3 25.7 150 36.3 32.3 113 TRIPLE PEAK 8500 30.9 20.9 148 39.2 36.9 106 ----- ----- Basin wide percent of average 156 107 LOWER GREEN RIVER HAMS FORK 7840 5.5 .0 * 18.4 16.2 115 HEWINTA 9500 13.2 .0 * 20.4 17.7 116 HICKERSON PARK 9150 4.5 .6 751* 15.4 13.9 111 HOLE-IN-ROCK 9150 8.0 .5 1581* 16.0 13.9 116 INDIAN CREEK 9425 38.8 24.5 158 34.7 30.7 113 KELLEY R.S. 8180 15.1 9.5 159 24.7 22.7 109 STEEL CREEK PARK 10100 23.2 16.4 142 24.5 17.9 137 ----- ----- Basin wide percent of average 174* 116 UPPER BEAR RIVER BUG LAKE 7950 24.0 9.7 248 29.5 23.9 124 HAYDEN FORK 9400 14.6 .7 2086* 28.9 24.7 118 KELLEY R.S. 8180 15.1 9.5 159 24.7 22.7 109 LILY LAKE 9050 13.5 5.5 246 25.5 19.7 131 MONTE CRISTO 8960 40.3 21.2 190 38.3 32.0 120 SALT RIVER SUMMIT 7600 11.9 .0 * 22.9 20.4 113 TRIAL LAKE 9960 28.9 20.5 141 31.7 30.0 106 ----- ----- Basin wide percent of average 203 117 ----------------------------------------------------------------------------- -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.