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: MAY 22 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 8.5 2.9 290 30.9 27.2 115 COTTONWOOD CREEK 7600 19.9 8.4 239 36.7 30.2 122 GRANITE CREEK 6770 10.1 5.0 203 27.9 28.9 97 GRASSY LAKE 7265 38.0 21.0 181 49.9 44.9 112 GROS VENTRE SUMMIT 8775 14.6 6.0 244 20.4 19.5 105 LEWIS LAKE DIVIDE 7860 37.5 25.7 147 46.3 45.8 102 PHILLIPS BENCH 8200 30.7 22.2 138 37.3 36.0 104 SALT RIVER SUMMIT 7600 6.5 .0 * 22.9 20.7 111 SNAKE RIVER STATION 6920 6.8 6.8 100 30.4 31.5 97 SPRING CREEK DIVIDE 9000 36.9 23.2 160 36.3 32.9 111 THUMB DIVIDE 7980 15.5 6.6 235 28.0 25.4 111 TOGWOTEE PASS 9580 -M 25.2 * 35.8 34.3 105 TWO OCEAN PLATEAU 9360 40.4 24.9 163 37.2 37.3 100 WILLOW CREEK 8450 30.9 24.4 127 49.0 38.8 127 ----- ----- Basin wide percent of average 164 108 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 27.4 22.7 121 28.2 23.9 119 BLACK BEAR 7950 58.2 33.2 176 60.3 49.3 123 CANYON 7940 10.5 4.5 234 22.9 18.2 126 FISHER CREEK 9100 39.7 35.2 113 43.9 45.5 97 MADISON PLATEAU 7750 -M 14.4 * 39.3 32.3 122 NORTHEAST ENTRANCE 7350 .0 1.7 0 17.9 15.7 114 PARKER PEAK 9400 25.7 21.2 122 -M 20.5 * SYLVAN LAKE 8420 -M 18.0 * 33.9 25.2 136 THUMB DIVIDE 7980 15.5 6.6 235 28.0 25.4 111 TWO OCEAN PLATEAU 9360 40.4 24.9 163 37.2 37.3 100 WHISKEY CREEK 6800 16.2 6.1 264 30.2 26.9 113 WHITE MILL 8700 29.2 22.7 129 30.2 35.4 86 WOLVERINE 7650 .0 1.9 0 15.2 17.2 89 ----- ----- Basin wide percent of average 146 110 WIND RIVER BURROUGHS CREEK 8750 17.2 5.0 352 23.5 21.5 110 COLD SPRINGS 9630 16.0 1.9 884 24.9 15.2 164 DEER PARK 9700 25.5 -M * 34.2 -M * HOBBS PARK 10100 30.9 13.9 224 29.2 19.9 148 LITTLE WARM 9620 17.5 3.5 500 25.2 18.4 137 SOUTH PASS 9040 22.0 14.0 159 31.2 23.0 136 ST. LAWRENCE ALT 8620 9.0 1.5 594 21.7 14.1 154 TOGWOTEE PASS 9580 -M 25.2 * 35.8 34.3 105 TOWNSEND CREEK 8700 15.5 4.5 353 26.7 17.7 151 ----- ----- Basin wide percent of average 293 133 BIGHORN BASIN BALD MTN. 9375 25.4 22.0 116 26.2 23.9 110 BEAR TRAP MEADOW 7900 .9 .0 89 18.2 13.0 142 BLACKWATER 9780 35.0 22.4 157 31.2 23.0 136 BONE SPRINGS DIV 9350 22.4 13.2 170 25.9 20.9 124 EVENING STAR 9200 35.0 28.4 124 41.2 28.7 144 GRAVE SPRINGS 8550 7.8 7.3 107 19.0 15.0 127 KIRWIN 9550 17.2 8.1 213 21.7 15.4 142 MARQUETTE 8760 18.4 6.3 297 22.0 16.2 137 MIDDLE POWDER 7760 14.7 9.4 159 22.9 17.2 134 OWL CREEK 8975 8.5 .7 1215 15.5 10.0 157 POWDER RIVER PASS 9480 11.5 4.3 272 22.9 17.2 134 SHELL CREEK 9580 19.4 14.7 132 21.4 18.7 116 SYLVAN LAKE 8420 -M 18.0 * 33.9 25.2 136 SYLVAN ROAD 8120 -M 2.8 * -M 20.9 * TIMBER CREEK 7950 9.2 1.7 575 18.4 12.6 147 YOUNTS PEAK 8350 20.0 13.1 153 22.9 21.4 107 ----- ----- Basin wide percent of average 162 131 SHOSHONE RIVER BLACKWATER 9780 35.0 22.4 157 31.2 23.0 136 EVENING STAR 9200 35.0 28.4 124 41.2 28.7 144 KIRWIN 9550 17.2 8.1 213 21.7 15.4 142 MARQUETTE 8760 18.4 6.3 297 22.0 16.2 137 SYLVAN LAKE 8420 -M 18.0 * 33.9 25.2 136 SYLVAN ROAD 8120 -M 2.8 * -M 20.9 * YOUNTS PEAK 8350 20.0 13.1 153 22.9 21.4 107 ----- ----- Basin wide percent of average 161 134 POWDER-TONGUE BEAR TRAP MEADOW 7900 .9 .0 89 18.2 13.0 142 BIG GOOSE 7990 8.2 -M * 19.7 -M * BONE SPRINGS DIV 9350 22.4 13.2 170 25.9 20.9 124 BURGESS JUNCTION 7880 10.7 7.5 143 18.9 16.7 114 CLOUD PEAK RESERVOIR 9860 23.0 13.0 179 25.9 20.0 130 DOME LAKE 8880 -M 7.8 * 18.7 19.0 98 GRAVE SPRINGS 8550 7.8 7.3 107 19.0 15.0 127 HANSEN SAWMILL 8760 .3 2.8 12 18.0 12.2 148 MIDDLE POWDER 7760 14.7 9.4 159 22.9 17.2 134 POWDER RIVER PASS 9480 11.5 4.3 272 22.9 17.2 134 SUCKER CREEK 8880 14.5 8.0 183 23.4 19.4 121 TIE CREEK 6870 1.5 -M * 19.4 16.0 122 ----- ----- Basin wide percent of average 161 126 BELLE FOURCHE BLIND PARK 6890 .2 2.8 4 20.9 16.9 125 NORTH RAPID CREEK 6130 .0 -M * 17.9 -M * WARREN PEAK 6520 .0 2.8 0 -M 12.5 * ----- ----- Basin wide percent of average 2 125* UPPER N. PLATTE RIVER COLUMBINE 9400 6.3 9.5 66 30.2 30.0 101 DIVIDE PEAK 8800 14.4 8.6 167 32.8 29.7 111 ELK RIVER 8700 3.8 5.1 75 29.9 23.9 126 JOE WRIGHT 10120 22.2 21.0 106 34.4 33.5 103 NORTH FRENCH CREEK 10100 41.7 24.2 173 40.0 31.0 130 OLD BATTLE 10000 39.3 31.7 125 48.7 38.4 127 SOUTH BRUSH CREEK 8400 8.5 3.9 218 27.4 22.5 122 TOWER 10500 -M 48.3 * -M 47.5 * WEBBER SPRINGS 9200 16.0 16.4 98 35.3 32.8 108 WILLOW CREEK PASS 9540 12.0 7.3 165 16.9 17.4 98 ----- ----- Basin wide percent of average 129 114 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 25.4 20.0 127 33.0 26.2 127 CASPER MTN. 7900 5.8 8.1 72 23.9 21.7 111 DEADMAN HILL 10220 19.0 15.2 126 24.9 23.5 106 DEER PARK 9700 25.5 -M * 34.2 -M * LAPRELE CREEK 8320 .0 2.5 0 21.9 17.2 128 RENO HILL 8400 8.2 6.3 131 27.2 23.7 115 ROACH 9700 -M 12.5 * 26.9 28.9 94 SAND LAKE 10080 46.3 31.0 150 39.5 27.4 145 SOUTH PASS 9040 22.0 14.0 159 31.2 23.0 136 WINDY PEAK 7840 .0 2.2 0 19.2 14.6 132 ----- ----- Basin wide percent of average 128 121 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .2 .0 * 24.0 20.2 119 DIVIDE PEAK 8800 14.4 8.6 167 32.8 29.7 111 OLD BATTLE 10000 39.3 31.7 125 48.7 38.4 127 SANDSTONE RS 8150 .0 1.4 0* 27.0 25.2 108 WHISKEY PARK 8950 28.2 19.9 142 39.7 37.0 108 ----- ----- Basin wide percent of average 133 115 UPPER GREEN RIVER BIG SANDY OPENING 9100 11.6 5.8 200 19.7 20.0 99 BLIND BULL SUM 8650 32.8 20.0 164 28.7 28.7 100 EAST RIM DIVIDE 7930 12.4 10.5 119 18.4 18.7 99 ELKHART PARK G.S. 9400 13.7 7.6 181 19.9 19.7 102 GROS VENTRE SUMMIT 8775 14.6 6.0 244 20.4 19.5 105 KENDALL R.S. 7740 5.5 .0 * 20.5 19.2 108 LOOMIS PARK 8240 -M 6.8 * 25.4 23.2 110 NEW FORK LAKE 8340 7.0 3.8 187 16.9 17.7 95 SNIDER BASIN 8250 12.4 5.0 247 23.2 18.7 125 SPRING CREEK DIVIDE 9000 36.9 23.2 160 36.3 32.9 111 TRIPLE PEAK 8500 26.7 18.7 144 39.3 37.7 105 ----- ----- Basin wide percent of average 168 106 LOWER GREEN RIVER HAMS FORK 7840 .0 .0 * 18.4 16.4 113 HEWINTA 9500 9.5 .0 * 20.5 18.2 113 HICKERSON PARK 9150 .9 .5 200* 15.5 14.4 108 HOLE-IN-ROCK 9150 2.9 .5 725* 16.0 14.4 112 INDIAN CREEK 9425 35.5 21.9 163 34.9 31.4 112 KELLEY R.S. 8180 11.1 6.0 189 24.7 23.0 108 STEEL CREEK PARK 10100 22.9 14.9 155 24.7 18.7 132 ----- ----- Basin wide percent of average 169* 114 UPPER BEAR RIVER BUG LAKE 7950 18.2 7.0 263 29.7 24.2 123 HAYDEN FORK 9400 9.4 .5 1861* 29.4 25.2 117 KELLEY R.S. 8180 11.1 6.0 189 24.7 23.0 108 LILY LAKE 9050 9.1 3.8 240 25.5 20.2 127 MONTE CRISTO 8960 38.0 17.0 224 38.5 32.8 118 SALT RIVER SUMMIT 7600 6.5 .0 * 22.9 20.7 111 TRIAL LAKE 9960 26.0 17.4 151 31.7 30.7 103 ----- ----- Basin wide percent of average 218 115 ----------------------------------------------------------------------------- -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.