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 28 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 .9 1.2 67* 30.9 27.7 112 COTTONWOOD CREEK 7600 11.5 3.3 346 36.8 30.9 120 GRANITE CREEK 6770 3.7 3.2 117 28.0 29.5 95 GRASSY LAKE 7265 26.4 15.6 170 49.8 45.8 109 GROS VENTRE SUMMIT 8775 10.0 2.4 417 20.4 19.9 103 LEWIS LAKE DIVIDE 7860 30.4 22.2 137 46.4 46.7 100 PHILLIPS BENCH 8200 23.4 19.5 120 37.4 36.8 102 SALT RIVER SUMMIT 7600 .3 .0 * 23.2 21.2 109 SNAKE RIVER STATION 6920 .0 2.8 0 30.4 32.3 95 SPRING CREEK DIVIDE 9000 28.4 20.7 137 36.4 33.5 109 THUMB DIVIDE 7980 7.0 2.8 256 28.2 25.9 109 TOGWOTEE PASS 9580 -M 24.2 * 35.8 34.9 103 TWO OCEAN PLATEAU 9360 35.7 23.4 153 37.3 38.0 99 WILLOW CREEK 8450 20.7 21.4 97 49.2 39.7 124 ----- ----- Basin wide percent of average 143 106 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 23.7 20.7 115 28.4 24.7 116 BLACK BEAR 7950 52.7 29.9 177 60.3 50.2 121 CANYON 7940 4.3 2.8 160 22.9 18.7 124 FISHER CREEK 9100 38.5 33.2 117 44.3 46.4 96 MADISON PLATEAU 7750 -M 10.2 * 39.3 32.9 120 NORTHEAST ENTRANCE 7350 .0 .9 0* 18.2 16.2 112 PARKER PEAK 9400 18.7 19.7 95 -M 21.2 * SYLVAN LAKE 8420 20.2 15.7 129 36.3 25.9 141 THUMB DIVIDE 7980 7.0 2.8 256 28.2 25.9 109 TWO OCEAN PLATEAU 9360 35.7 23.4 153 37.3 38.0 99 WHISKEY CREEK 6800 9.5 3.3 294 30.4 27.4 112 WHITE MILL 8700 25.7 20.7 124 30.4 36.2 85 WOLVERINE 7650 .0 .9 0* 15.5 17.9 88 ----- ----- Basin wide percent of average 136 109 WIND RIVER BURROUGHS CREEK 8750 12.0 3.3 372 23.7 22.2 107 COLD SPRINGS 9630 11.0 .0 1212 25.4 15.9 161 DEER PARK 9700 22.7 -M * 34.3 -M * HOBBS PARK 10100 23.7 11.1 213 29.5 20.5 144 LITTLE WARM 9620 11.4 1.9 595 25.4 19.0 134 SOUTH PASS 9040 17.0 11.6 147 31.4 23.7 133 ST. LAWRENCE ALT 8620 1.5 .7 215* 22.0 14.6 151 TOGWOTEE PASS 9580 -M 24.2 * 35.8 34.9 103 TOWNSEND CREEK 8700 9.5 2.9 328 26.9 18.4 147 ----- ----- Basin wide percent of average 266 131 BIGHORN BASIN BALD MTN. 9375 22.2 19.9 112 26.2 24.9 106 BEAR TRAP MEADOW 7900 .0 .5 0* 19.2 13.5 142 BLACKWATER 9780 31.0 20.4 153 31.4 23.7 133 BONE SPRINGS DIV 9350 18.2 10.2 178 26.4 21.7 122 EVENING STAR 9200 31.4 26.7 118 41.2 29.4 140 GRAVE SPRINGS 8550 1.2 4.3 29 19.7 15.9 125 KIRWIN 9550 12.7 6.3 202 21.7 16.0 137 MARQUETTE 8760 14.5 5.0 291 22.2 16.9 131 MIDDLE POWDER 7760 7.8 5.3 148 23.0 17.9 130 OWL CREEK 8975 -M .5 * 16.0 10.5 154 POWDER RIVER PASS 9480 6.1 2.5 244 23.4 17.9 131 SHELL CREEK 9580 15.0 12.6 120 21.7 19.4 112 SYLVAN LAKE 8420 20.2 15.7 129 36.3 25.9 141 SYLVAN ROAD 8120 1.0 1.9 56 22.7 21.4 106 TIMBER CREEK 7950 4.1 .9 513 18.4 13.5 138 YOUNTS PEAK 8350 16.4 10.7 153 22.9 22.0 104 ----- ----- Basin wide percent of average 142 127 SHOSHONE RIVER BLACKWATER 9780 31.0 20.4 153 31.4 23.7 133 EVENING STAR 9200 31.4 26.7 118 41.2 29.4 140 KIRWIN 9550 12.7 6.3 202 21.7 16.0 137 MARQUETTE 8760 14.5 5.0 291 22.2 16.9 131 SYLVAN LAKE 8420 20.2 15.7 129 36.3 25.9 141 SYLVAN ROAD 8120 1.0 1.9 56 22.7 21.4 106 YOUNTS PEAK 8350 16.4 10.7 153 22.9 22.0 104 ----- ----- Basin wide percent of average 147 128 POWDER-TONGUE BEAR TRAP MEADOW 7900 .0 .5 0* 19.2 13.5 142 BIG GOOSE 7990 3.2 -M * 19.9 -M * BONE SPRINGS DIV 9350 18.2 10.2 178 26.4 21.7 122 BURGESS JUNCTION 7880 5.8 4.5 132 18.9 17.4 110 CLOUD PEAK RESERVOIR 9860 18.5 10.2 182 26.2 20.9 126 DOME LAKE 8880 -M 5.5 * 18.7 19.9 95 GRAVE SPRINGS 8550 1.2 4.3 29 19.7 15.9 125 HANSEN SAWMILL 8760 .0 1.7 0 18.2 12.7 144 MIDDLE POWDER 7760 7.8 5.3 148 23.0 17.9 130 POWDER RIVER PASS 9480 6.1 2.5 244 23.4 17.9 131 SUCKER CREEK 8880 9.2 5.6 165 23.5 20.0 118 TIE CREEK 6870 .0 -M * 19.4 16.7 117 ----- ----- Basin wide percent of average 151 122 BELLE FOURCHE BLIND PARK 6890 .0 1.2 0* 21.5 17.7 122 NORTH RAPID CREEK 6130 .0 -M * 18.9 -M * WARREN PEAK 6520 .0 1.2 0* -M 13.0 * ----- ----- Basin wide percent of average 0* 122* UPPER N. PLATTE RIVER COLUMBINE 9400 .0 5.5 0 30.2 30.7 99 DIVIDE PEAK 8800 5.8 5.3 112 32.8 30.4 108 ELK RIVER 8700 .0 2.3 0 30.4 24.2 126 JOE WRIGHT 10120 19.0 18.7 102 34.9 34.4 102 NORTH FRENCH CREEK 10100 36.7 21.9 168 40.2 31.9 127 OLD BATTLE 10000 35.7 27.2 132 49.3 39.2 127 SOUTH BRUSH CREEK 8400 7.0 2.3 319 27.5 23.0 120 TOWER 10500 47.5 46.0 104 51.0 48.8 105 WEBBER SPRINGS 9200 9.6 12.9 75 35.5 33.4 107 WILLOW CREEK PASS 9540 7.5 4.3 175 17.5 18.0 98 ----- ----- Basin wide percent of average 116 112 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 21.2 15.7 135 33.8 26.7 127 CASPER MTN. 7900 .3 5.5 6 24.7 22.4 111 DEADMAN HILL 10220 15.5 12.2 127 25.4 24.2 105 DEER PARK 9700 22.7 -M * 34.3 -M * LAPRELE CREEK 8320 .0 1.7 0 23.2 17.7 131 RENO HILL 8400 1.2 4.3 28 27.5 24.2 115 ROACH 9700 -M 9.5 * 27.0 29.7 91 SAND LAKE 10080 46.3 27.2 170 39.8 28.0 142 SOUTH PASS 9040 17.0 11.6 147 31.4 23.7 133 WINDY PEAK 7840 .0 .0 0* 20.2 15.4 132 ----- ----- Basin wide percent of average 129 120 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 100* 24.0 20.7 117 DIVIDE PEAK 8800 5.8 5.3 112 32.8 30.4 108 OLD BATTLE 10000 35.7 27.2 132 49.3 39.2 127 SANDSTONE RS 8150 .0 .6 0* 27.2 25.7 106 WHISKEY PARK 8950 -M 15.2 * 39.7 37.8 105 ----- ----- Basin wide percent of average 126* 113 UPPER GREEN RIVER BIG SANDY OPENING 9100 5.3 2.4 221 20.2 20.4 99 BLIND BULL SUM 8650 31.5 17.9 176 28.7 29.2 99 EAST RIM DIVIDE 7930 7.5 8.5 90 18.5 19.0 98 ELKHART PARK G.S. 9400 7.3 5.8 129 20.0 20.0 100 GROS VENTRE SUMMIT 8775 10.0 2.4 417 20.4 19.9 103 KENDALL R.S. 7740 .0 .0 100* 20.5 19.5 106 LOOMIS PARK 8240 -M 2.8 * 25.5 23.5 109 NEW FORK LAKE 8340 .3 1.5 14 17.7 18.2 98 SNIDER BASIN 8250 4.6 2.0 230 23.2 19.0 123 SPRING CREEK DIVIDE 9000 28.4 20.7 137 36.4 33.5 109 TRIPLE PEAK 8500 17.9 16.4 110 39.4 38.4 103 ----- ----- Basin wide percent of average 146 104 LOWER GREEN RIVER HAMS FORK 7840 .0 .0 100* 18.7 16.7 112 HEWINTA 9500 1.0 .0 * 20.5 18.7 110 HICKERSON PARK 9150 .2 .3 50* 16.2 15.0 109 HOLE-IN-ROCK 9150 .0 .3 0* 16.0 15.0 108 INDIAN CREEK 9425 29.4 19.2 154 35.0 31.9 110 KELLEY R.S. 8180 3.8 2.4 159 24.9 23.5 106 STEEL CREEK PARK 10100 18.5 13.1 142 24.9 19.4 128 ----- ----- Basin wide percent of average 148* 112 UPPER BEAR RIVER BUG LAKE 7950 9.7 4.3 231 29.7 24.7 121 HAYDEN FORK 9400 2.3 .3 1101* 29.2 25.9 114 KELLEY R.S. 8180 3.8 2.4 159 24.9 23.5 106 LILY LAKE 9050 1.5 2.3 69 26.2 20.9 126 MONTE CRISTO 8960 28.7 12.7 226 38.5 33.3 116 SALT RIVER SUMMIT 7600 .3 .0 * 23.2 21.2 109 TRIAL LAKE 9960 18.7 14.2 132 31.9 31.4 102 ----- ----- Basin wide percent of average 180 113 ----------------------------------------------------------------------------- -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.