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 TUESDAY: MAY 25 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 5.0 2.0 250 30.9 27.4 113 COTTONWOOD CREEK 7600 15.2 5.8 263 36.8 30.5 121 GRANITE CREEK 6770 7.0 4.1 171 27.9 29.2 96 GRASSY LAKE 7265 31.5 18.4 173 49.9 45.4 110 GROS VENTRE SUMMIT 8775 12.2 4.3 291 20.4 19.7 104 LEWIS LAKE DIVIDE 7860 34.3 23.9 144 46.3 46.2 101 PHILLIPS BENCH 8200 27.0 20.9 130 37.4 36.4 103 SALT RIVER SUMMIT 7600 1.2 .0 * 23.0 21.0 110 SNAKE RIVER STATION 6920 2.4 4.8 50 30.4 31.9 95 SPRING CREEK DIVIDE 9000 32.8 21.9 150 36.3 33.3 110 THUMB DIVIDE 7980 11.2 4.8 239 28.0 25.7 110 TOGWOTEE PASS 9580 -M 24.7 * 35.8 34.7 104 TWO OCEAN PLATEAU 9360 38.7 24.2 161 37.3 37.7 99 WILLOW CREEK 8450 25.2 22.9 111 49.0 39.3 125 ----- ----- Basin wide percent of average 154 107 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 25.4 21.7 117 28.2 24.2 117 BLACK BEAR 7950 56.2 31.5 179 60.3 49.8 122 CANYON 7940 7.5 3.7 206 22.9 18.4 125 FISHER CREEK 9100 -M 34.2 * 44.0 46.0 96 MADISON PLATEAU 7750 -M 12.2 * 39.3 32.7 121 NORTHEAST ENTRANCE 7350 .0 1.2 0 17.9 16.0 112 PARKER PEAK 9400 22.0 20.4 109 -M 20.9 * SYLVAN LAKE 8420 -M 16.9 * 38.2 25.4 151 THUMB DIVIDE 7980 11.2 4.8 239 28.0 25.7 110 TWO OCEAN PLATEAU 9360 38.7 24.2 161 37.3 37.7 99 WHISKEY CREEK 6800 12.5 4.8 266 30.4 27.0 113 WHITE MILL 8700 27.2 21.7 126 30.2 35.8 85 WOLVERINE 7650 .0 1.4 0 15.2 17.5 87 ----- ----- Basin wide percent of average 149 111 WIND RIVER BURROUGHS CREEK 8750 14.5 4.1 354 23.7 21.9 108 COLD SPRINGS 9630 13.1 1.4 936 24.9 15.5 161 DEER PARK 9700 24.0 -M * 34.3 -M * HOBBS PARK 10100 25.5 12.5 205 29.2 20.2 146 LITTLE WARM 9620 14.0 2.8 519 25.2 18.7 135 SOUTH PASS 9040 19.7 12.7 155 31.4 23.4 135 ST. LAWRENCE ALT 8620 5.1 1.2 464 21.7 14.4 152 TOGWOTEE PASS 9580 -M 24.7 * 35.8 34.7 104 TOWNSEND CREEK 8700 12.4 3.7 342 26.9 18.0 149 ----- ----- Basin wide percent of average 274 132 BIGHORN BASIN BALD MTN. 9375 24.0 21.0 115 26.2 24.4 108 BEAR TRAP MEADOW 7900 .7 .6 117* 18.4 13.2 139 BLACKWATER 9780 31.7 21.4 149 31.4 23.4 135 BONE SPRINGS DIV 9350 21.2 11.7 181 26.2 21.4 124 EVENING STAR 9200 33.3 27.5 121 41.2 29.0 142 GRAVE SPRINGS 8550 4.5 5.8 78 19.0 15.5 124 KIRWIN 9550 15.0 7.3 207 21.7 15.6 140 MARQUETTE 8760 16.2 5.6 290 22.0 16.5 134 MIDDLE POWDER 7760 11.6 7.3 159 22.9 17.5 131 OWL CREEK 8975 6.0 .5 1200 15.6 10.2 153 POWDER RIVER PASS 9480 8.5 3.4 251 23.0 17.5 132 SHELL CREEK 9580 17.9 13.6 131 21.5 19.0 114 SYLVAN LAKE 8420 -M 16.9 * 38.2 25.4 151 SYLVAN ROAD 8120 -M 2.3 * -M 21.2 * TIMBER CREEK 7950 6.8 1.2 567 18.4 13.0 142 YOUNTS PEAK 8350 18.4 12.0 155 22.9 21.7 106 ----- ----- Basin wide percent of average 156 131 SHOSHONE RIVER BLACKWATER 9780 31.7 21.4 149 31.4 23.4 135 EVENING STAR 9200 33.3 27.5 121 41.2 29.0 142 KIRWIN 9550 15.0 7.3 207 21.7 15.6 140 MARQUETTE 8760 16.2 5.6 290 22.0 16.5 134 SYLVAN LAKE 8420 -M 16.9 * 38.2 25.4 151 SYLVAN ROAD 8120 -M 2.3 * -M 21.2 * YOUNTS PEAK 8350 18.4 12.0 155 22.9 21.7 106 ----- ----- Basin wide percent of average 156 135 POWDER-TONGUE BEAR TRAP MEADOW 7900 .7 .6 117* 18.4 13.2 139 BIG GOOSE 7990 5.8 -M * 19.9 -M * BONE SPRINGS DIV 9350 21.2 11.7 181 26.2 21.4 124 BURGESS JUNCTION 7880 8.5 6.0 141 18.9 17.0 112 CLOUD PEAK RESERVOIR 9860 21.2 11.6 182 26.0 20.4 128 DOME LAKE 8880 -M 6.6 * 18.7 19.4 96 GRAVE SPRINGS 8550 4.5 5.8 78 19.0 15.5 124 HANSEN SAWMILL 8760 .0 2.3 0 18.0 12.5 146 MIDDLE POWDER 7760 11.6 7.3 159 22.9 17.5 131 POWDER RIVER PASS 9480 8.5 3.4 251 23.0 17.5 132 SUCKER CREEK 8880 12.2 6.8 183 23.4 19.7 120 TIE CREEK 6870 .3 -M * 19.4 16.4 120 ----- ----- Basin wide percent of average 160 123 BELLE FOURCHE BLIND PARK 6890 .0 1.9 0 21.4 17.4 124 NORTH RAPID CREEK 6130 .0 -M * 18.2 -M * WARREN PEAK 6520 .0 2.0 0 -M 12.7 * ----- ----- Basin wide percent of average 0 124* UPPER N. PLATTE RIVER COLUMBINE 9400 1.5 7.5 21 30.2 30.4 100 DIVIDE PEAK 8800 9.6 7.0 140 32.7 30.2 109 ELK RIVER 8700 .0 3.8 0 29.9 24.0 125 JOE WRIGHT 10120 20.4 19.9 103 34.4 33.9 102 NORTH FRENCH CREEK 10100 38.4 22.9 168 39.9 31.4 128 OLD BATTLE 10000 37.2 29.4 127 49.2 38.8 127 SOUTH BRUSH CREEK 8400 7.0 3.2 226 27.2 22.7 120 TOWER 10500 47.7 47.2 102 51.0 48.0 107 WEBBER SPRINGS 9200 12.4 14.6 85 35.5 33.2 108 WILLOW CREEK PASS 9540 9.4 5.8 161 17.2 17.7 97 ----- ----- Basin wide percent of average 114 112 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 21.9 17.9 124 33.3 26.4 126 CASPER MTN. 7900 1.5 6.8 23 23.9 22.0 109 DEADMAN HILL 10220 16.5 13.7 121 25.0 23.9 105 DEER PARK 9700 24.0 -M * 34.3 -M * LAPRELE CREEK 8320 .0 2.0 0 22.0 17.4 127 RENO HILL 8400 3.8 5.3 72 27.2 23.9 114 ROACH 9700 -M 11.0 * 26.9 29.4 92 SAND LAKE 10080 46.3 29.2 159 40.0 27.7 145 SOUTH PASS 9040 19.7 12.7 155 31.4 23.4 135 WINDY PEAK 7840 .0 1.5 0 19.2 15.0 128 ----- ----- Basin wide percent of average 124 119 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .2 .0 * 23.9 20.4 118 DIVIDE PEAK 8800 9.6 7.0 140 32.7 30.2 109 OLD BATTLE 10000 37.2 29.4 127 49.2 38.8 127 SANDSTONE RS 8150 .0 1.0 0* 27.0 25.4 107 WHISKEY PARK 8950 -M 17.5 * 39.7 37.4 106 ----- ----- Basin wide percent of average 126* 114 UPPER GREEN RIVER BIG SANDY OPENING 9100 8.4 4.1 203 20.0 20.2 100 BLIND BULL SUM 8650 32.8 18.9 174 28.7 29.0 99 EAST RIM DIVIDE 7930 10.0 9.5 107 18.4 18.9 98 ELKHART PARK G.S. 9400 10.5 6.8 157 19.9 19.9 101 GROS VENTRE SUMMIT 8775 12.2 4.3 291 20.4 19.7 104 KENDALL R.S. 7740 1.5 .0 * 20.5 19.4 107 LOOMIS PARK 8240 -M 4.8 * 25.4 23.4 110 NEW FORK LAKE 8340 3.4 2.7 131 17.2 17.9 97 SNIDER BASIN 8250 8.9 3.5 252 23.2 18.9 124 SPRING CREEK DIVIDE 9000 32.8 21.9 150 36.3 33.3 110 TRIPLE PEAK 8500 22.2 17.4 128 39.3 38.0 104 ----- ----- Basin wide percent of average 159 105 LOWER GREEN RIVER HAMS FORK 7840 .0 .0 100* 18.5 16.7 112 HEWINTA 9500 5.3 .0 * 20.4 18.4 111 HICKERSON PARK 9150 .2 .3 34* 15.9 14.6 109 HOLE-IN-ROCK 9150 .0 .3 0* 16.0 14.6 109 INDIAN CREEK 9425 32.2 20.5 157 34.9 31.7 111 KELLEY R.S. 8180 7.3 4.3 172 24.9 23.4 107 STEEL CREEK PARK 10100 20.7 14.0 149 24.9 19.0 131 ----- ----- Basin wide percent of average 154* 113 UPPER BEAR RIVER BUG LAKE 7950 13.6 5.6 243 29.7 24.4 122 HAYDEN FORK 9400 5.3 .3 1767* 29.5 25.5 116 KELLEY R.S. 8180 7.3 4.3 172 24.9 23.4 107 LILY LAKE 9050 5.0 3.0 164 25.5 20.5 125 MONTE CRISTO 8960 32.8 14.9 222 38.5 33.0 117 SALT RIVER SUMMIT 7600 1.2 .0 * 23.0 21.0 110 TRIAL LAKE 9960 22.7 15.9 144 31.7 31.0 103 ----- ----- Basin wide percent of average 198 114 ----------------------------------------------------------------------------- -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.