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 THURSDAY: MAY 13 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 13.1 5.8 230 30.2 26.4 115 COTTONWOOD CREEK 7600 23.7 15.0 159 35.5 29.4 121 GRANITE CREEK 6770 14.1 8.2 172 27.4 28.0 98 GRASSY LAKE 7265 39.0 28.2 139 48.3 43.8 111 GROS VENTRE SUMMIT 8775 16.4 10.7 153 19.7 18.9 104 LEWIS LAKE DIVIDE 7860 38.0 30.4 126 44.8 44.4 101 PHILLIPS BENCH 8200 33.9 26.0 131 36.8 35.0 106 SALT RIVER SUMMIT 7600 12.0 1.7 750 22.4 20.2 111 SNAKE RIVER STATION 6920 11.0 12.4 89 29.4 30.7 96 SPRING CREEK DIVIDE 9000 37.5 26.7 141 35.4 32.0 111 THUMB DIVIDE 7980 16.9 11.9 143 25.9 24.7 106 TOGWOTEE PASS 9580 -M 26.4 * 34.4 33.3 104 TWO OCEAN PLATEAU 9360 41.7 26.5 157 35.9 36.3 100 WILLOW CREEK 8450 31.9 28.4 113 47.3 37.8 126 ----- ----- Basin wide percent of average 143 108 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 28.9 25.2 116 27.7 22.7 122 BLACK BEAR 7950 56.0 37.5 150 53.3 48.2 111 CANYON 7940 12.5 7.3 173 21.5 17.4 124 FISHER CREEK 9100 41.3 37.7 110 42.4 44.2 97 MADISON PLATEAU 7750 -M 19.7 * 37.8 31.4 121 NORTHEAST ENTRANCE 7350 2.0 3.2 65 16.9 15.0 113 PARKER PEAK 9400 26.4 22.9 116 -M 19.5 * SYLVAN LAKE 8420 24.2 21.2 115 32.3 23.9 135 THUMB DIVIDE 7980 16.9 11.9 143 25.9 24.7 106 TWO OCEAN PLATEAU 9360 41.7 26.5 157 35.9 36.3 100 WHISKEY CREEK 6800 18.9 10.5 181 28.9 26.0 112 WHITE MILL 8700 30.5 25.2 122 28.9 34.3 85 WOLVERINE 7650 1.4 3.8 37 15.4 16.4 94 ----- ----- Basin wide percent of average 130 108 WIND RIVER BURROUGHS CREEK 8750 18.4 7.8 236 22.2 20.7 108 COLD SPRINGS 9630 18.2 3.4 536 24.0 14.4 168 DEER PARK 9700 26.4 -M * 33.0 -M * HOBBS PARK 10100 30.4 17.2 178 27.9 18.7 150 LITTLE WARM 9620 20.4 6.3 328 24.5 17.5 141 SOUTH PASS 9040 24.5 16.9 146 30.4 22.0 138 ST. LAWRENCE ALT 8620 12.6 2.9 435 21.2 13.5 158 TOGWOTEE PASS 9580 -M 26.4 * 34.4 33.3 104 TOWNSEND CREEK 8700 18.5 6.6 281 25.9 16.9 155 ----- ----- Basin wide percent of average 235 135 BIGHORN BASIN BALD MTN. 9375 25.0 24.4 103 24.7 22.7 110 BEAR TRAP MEADOW 7900 1.2 1.9 58 16.4 12.0 137 BLACKWATER 9780 35.8 25.0 143 29.4 22.0 134 BONE SPRINGS DIV 9350 22.2 16.9 131 24.0 19.7 122 EVENING STAR 9200 36.8 30.4 122 40.0 27.5 146 GRAVE SPRINGS 8550 11.2 11.1 101 18.4 14.0 132 KIRWIN 9550 17.5 10.5 169 20.7 14.5 143 MARQUETTE 8760 17.2 7.8 221 19.9 15.0 133 MIDDLE POWDER 7760 17.5 14.2 124 23.2 16.2 143 OWL CREEK 8975 10.9 1.4 772 14.5 9.2 158 POWDER RIVER PASS 9480 12.2 7.0 177 21.7 16.2 135 SHELL CREEK 9580 19.4 17.0 115 20.5 17.5 118 SYLVAN LAKE 8420 24.2 21.2 115 32.3 23.9 135 SYLVAN ROAD 8120 7.3 4.6 157 21.9 19.9 110 TIMBER CREEK 7950 10.5 3.0 347 16.9 11.5 147 YOUNTS PEAK 8350 21.2 16.2 131 21.9 20.5 107 ----- ----- Basin wide percent of average 137 130 SHOSHONE RIVER BLACKWATER 9780 35.8 25.0 143 29.4 22.0 134 EVENING STAR 9200 36.8 30.4 122 40.0 27.5 146 KIRWIN 9550 17.5 10.5 169 20.7 14.5 143 MARQUETTE 8760 17.2 7.8 221 19.9 15.0 133 SYLVAN LAKE 8420 24.2 21.2 115 32.3 23.9 135 SYLVAN ROAD 8120 7.3 4.6 157 21.9 19.9 110 YOUNTS PEAK 8350 21.2 16.2 131 21.9 20.5 107 ----- ----- Basin wide percent of average 139 130 POWDER-TONGUE BEAR TRAP MEADOW 7900 1.2 1.9 58 16.4 12.0 137 BIG GOOSE 7990 9.7 -M * 18.4 -M * BONE SPRINGS DIV 9350 22.2 16.9 131 24.0 19.7 122 BURGESS JUNCTION 7880 11.9 11.5 103 17.7 15.7 113 CLOUD PEAK RESERVOIR 9860 24.9 16.4 152 25.0 18.9 133 DOME LAKE 8880 -M 11.0 * 17.7 17.9 99 GRAVE SPRINGS 8550 11.2 11.1 101 18.4 14.0 132 HANSEN SAWMILL 8760 4.3 4.5 96 17.2 11.5 151 MIDDLE POWDER 7760 17.5 14.2 124 23.2 16.2 143 POWDER RIVER PASS 9480 12.2 7.0 177 21.7 16.2 135 SUCKER CREEK 8880 15.0 11.0 136 21.7 18.2 120 TIE CREEK 6870 -M -M * -M 15.1 * ----- ----- Basin wide percent of average 128 127 BELLE FOURCHE BLIND PARK 6890 .3 5.5 4 19.4 15.6 124 NORTH RAPID CREEK 6130 .0 -M * 17.4 -M * WARREN PEAK 6520 1.9 5.5 34 -M 11.5 * ----- ----- Basin wide percent of average 19 124* UPPER N. PLATTE RIVER COLUMBINE 9400 15.4 15.4 100 29.7 29.2 102 DIVIDE PEAK 8800 20.4 13.5 152 32.2 28.7 112 ELK RIVER 8700 11.0 9.7 113 28.9 23.2 125 JOE WRIGHT 10120 23.5 23.9 99 33.3 32.2 104 NORTH FRENCH CREEK 10100 40.5 27.2 150 39.8 29.7 135 OLD BATTLE 10000 40.0 37.2 108 47.0 37.3 127 SOUTH BRUSH CREEK 8400 10.0 6.6 151 25.7 21.7 118 TOWER 10500 57.4 50.9 113 49.7 45.8 109 WEBBER SPRINGS 9200 20.4 21.4 96 34.2 31.9 107 WILLOW CREEK PASS 9540 15.5 11.1 140 16.4 16.7 99 ----- ----- Basin wide percent of average 118 114 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 28.7 25.5 113 32.3 25.2 129 CASPER MTN. 7900 12.9 12.2 105 23.4 20.4 115 DEADMAN HILL 10220 22.2 18.7 119 24.2 22.5 108 DEER PARK 9700 26.4 -M * 33.0 -M * LAPRELE CREEK 8320 .0 3.9 0 20.9 16.2 130 RENO HILL 8400 14.1 9.4 152 26.7 23.2 116 ROACH 9700 -M 16.4 * 26.0 27.7 95 SAND LAKE 10080 46.3 35.8 130 37.8 26.2 145 SOUTH PASS 9040 24.5 16.9 146 30.4 22.0 138 WINDY PEAK 7840 .9 4.3 20 18.7 13.6 137 ----- ----- Basin wide percent of average 119 122 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .7 0* 23.2 19.5 119 DIVIDE PEAK 8800 20.4 13.5 152 32.2 28.7 112 OLD BATTLE 10000 40.0 37.2 108 47.0 37.3 127 SANDSTONE RS 8150 3.2 3.4 92 26.4 24.2 109 WHISKEY PARK 8950 30.7 26.0 119 38.0 35.8 107 ----- ----- Basin wide percent of average 117 115 UPPER GREEN RIVER BIG SANDY OPENING 9100 14.9 10.5 143 19.2 19.4 99 BLIND BULL SUM 8650 32.7 22.5 145 27.7 28.0 99 EAST RIM DIVIDE 7930 14.5 13.0 111 17.9 18.2 99 ELKHART PARK G.S. 9400 16.0 10.5 152 19.4 19.0 102 GROS VENTRE SUMMIT 8775 16.4 10.7 153 19.7 18.9 104 KENDALL R.S. 7740 9.6 1.7 600 20.0 18.5 109 LOOMIS PARK 8240 -M 12.0 * 24.7 22.4 111 NEW FORK LAKE 8340 10.9 6.8 162 16.2 17.2 95 SNIDER BASIN 8250 17.9 9.2 195 22.7 18.0 127 SPRING CREEK DIVIDE 9000 37.5 26.7 141 35.4 32.0 111 TRIPLE PEAK 8500 30.9 21.9 142 38.0 36.5 105 ----- ----- Basin wide percent of average 151 106 LOWER GREEN RIVER HAMS FORK 7840 6.6 .0 734* 18.2 16.0 115 HEWINTA 9500 11.9 .9 1476* 19.2 17.4 110 HICKERSON PARK 9150 3.9 1.0 390 14.5 13.5 108 HOLE-IN-ROCK 9150 7.5 .9 938 15.0 13.5 111 INDIAN CREEK 9425 38.8 25.5 153 34.3 30.4 113 KELLEY R.S. 8180 15.4 10.9 142 24.2 22.4 109 STEEL CREEK PARK 10100 21.9 17.0 129 23.0 17.7 131 ----- ----- Basin wide percent of average 187 114 UPPER BEAR RIVER BUG LAKE 7950 24.9 11.0 227 29.0 23.5 124 HAYDEN FORK 9400 13.9 1.7 863* 28.2 24.4 116 KELLEY R.S. 8180 15.4 10.9 142 24.2 22.4 109 LILY LAKE 9050 12.2 6.3 197 24.2 19.4 125 MONTE CRISTO 8960 39.8 22.7 176 37.5 31.7 119 SALT RIVER SUMMIT 7600 12.0 1.7 750 22.4 20.2 111 TRIAL LAKE 9960 28.2 21.5 132 30.7 29.7 104 ----- ----- Basin wide percent of average 195 115 ----------------------------------------------------------------------------- -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.