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: DECEMBER 4 , 1998 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 4.7 4.3 109 6.4 7.0 91 COTTONWOOD CREEK 7600 3.7 4.7 79 7.1 7.4 96 GRANITE CREEK 6770 3.3 3.8 87 4.9 7.3 67 GRASSY LAKE 7265 8.2 7.6 108 10.0 11.2 89 GROS VENTRE SUMMIT 8775 4.6 3.9 118 5.2 5.0 104 LEWIS LAKE DIVIDE 7860 8.7 7.5 116 11.3 11.4 99 PHILLIPS BENCH 8200 6.8 6.2 110 7.5 8.8 85 SALT RIVER SUMMIT 7600 1.7 2.5 68 4.4 5.2 85 SNAKE RIVER STATION 6920 4.5 4.2 107 6.7 7.8 86 SPRING CREEK DIVIDE 9000 5.1 6.5 78 6.4 8.1 79 THUMB DIVIDE 7980 7.5 4.0 188 7.9 6.4 123 TOGWOTEE PASS 9580 7.5 6.6 114 7.8 8.5 92 TWO OCEAN PLATEAU 9360 11.2 8.3 135 10.4 9.5 109 WILLOW CREEK 8450 5.9 6.8 87 10.8 9.6 113 ----- ----- Basin wide percent of average 108 94 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 7.1 7.4 96 6.3 5.4 117 BLACK BEAR 7950 13.4 9.0 149 13.6 10.6 128 CANYON 7940 4.5 3.0 150 5.5 4.6 120 FISHER CREEK 9100 11.8 9.5 124 10.9 9.9 110 MADISON PLATEAU 7750 -M 5.8 * 10.5 7.4 142 NORTHEAST ENTRANCE 7350 1.9 2.1 90 3.7 3.9 95 PARKER PEAK 9400 6.5 7.4 88 -M 5.3 * SYLVAN LAKE 8420 8.1 7.2 112 10.0 6.8 147 THUMB DIVIDE 7980 7.5 4.0 188 7.9 6.4 123 TWO OCEAN PLATEAU 9360 11.2 8.3 135 10.4 9.5 109 WHISKEY CREEK 6800 6.2 4.1 151 8.0 6.0 133 WHITE MILL 8700 6.7 6.6 102 6.8 8.0 85 WOLVERINE 7650 3.6 2.6 138 3.9 4.3 91 ----- ----- Basin wide percent of average 124 118 WIND RIVER BURROUGHS CREEK 8750 3.9 4.1 95 4.3 5.4 80 COLD SPRINGS 9630 4.0 2.9 138 5.4 4.1 132 DEER PARK 9700 4.5 -M * 6.8 -M * HOBBS PARK 10100 6.7 5.3 126 7.1 4.6 154 LITTLE WARM 9620 4.4 3.4 129 5.2 4.7 111 SOUTH PASS 9040 4.3 5.6 77 6.1 5.6 109 ST. LAWRENCE ALT 8620 3.2 2.1 152 5.6 3.9 144 TOGWOTEE PASS 9580 7.5 6.6 114 7.8 8.5 92 TOWNSEND CREEK 8700 3.8 2.9 131 6.4 4.1 156 ----- ----- Basin wide percent of average 115 117 BIGHORN BASIN BALD MTN. 9375 5.1 6.4 80 5.3 5.4 98 BEAR TRAP MEADOW 7900 2.0 2.3 87 5.1 3.2 159 BLACKWATER 9780 10.7 6.2 173 9.4 5.9 159 BONE SPRINGS DIV 9350 4.0 5.3 75 4.5 4.6 98 EVENING STAR 9200 9.4 9.0 104 9.7 7.2 135 GRAVE SPRINGS 8550 2.0 3.0 67 5.2 3.7 141 KIRWIN 9550 4.7 3.5 134 5.2 3.8 137 MARQUETTE 8760 4.5 2.6 173 5.3 3.6 147 MIDDLE POWDER 7760 1.8 3.8 47 8.0 4.3 186 OWL CREEK 8975 2.7 1.2 225 3.5 2.1 167 POWDER RIVER PASS 9480 2.2 3.4 65 4.2 4.0 105 SHELL CREEK 9580 4.3 5.1 84 3.9 4.3 91 SYLVAN LAKE 8420 8.1 7.2 112 10.0 6.8 147 SYLVAN ROAD 8120 4.6 3.7 124 5.9 5.5 107 TIMBER CREEK 7950 2.7 1.3 208 4.2 2.6 162 YOUNTS PEAK 8350 6.0 5.8 103 5.4 5.3 102 ----- ----- Basin wide percent of average 107 131 SHOSHONE RIVER BLACKWATER 9780 10.7 6.2 173 9.4 5.9 159 EVENING STAR 9200 9.4 9.0 104 9.7 7.2 135 KIRWIN 9550 4.7 3.5 134 5.2 3.8 137 MARQUETTE 8760 4.5 2.6 173 5.3 3.6 147 SYLVAN LAKE 8420 8.1 7.2 112 10.0 6.8 147 SYLVAN ROAD 8120 4.6 3.7 124 5.9 5.5 107 YOUNTS PEAK 8350 6.0 5.8 103 5.4 5.3 102 ----- ----- Basin wide percent of average 126 134 POWDER-TONGUE BEAR TRAP MEADOW 7900 2.0 2.3 87 5.1 3.2 159 BIG GOOSE 7990 1.7 -M * 4.6 -M * BONE SPRINGS DIV 9350 4.0 5.3 75 4.5 4.6 98 BURGESS JUNCTION 7880 1.9 3.8 50 4.3 4.0 108 CLOUD PEAK RESERVOIR 9860 3.9 3.6 108 5.6 4.5 124 DOME LAKE 8880 2.2 4.2 52 3.7 4.9 76 GRAVE SPRINGS 8550 2.0 3.0 67 5.2 3.7 141 HANSEN SAWMILL 8760 1.9 2.2 86 3.3 3.1 106 MIDDLE POWDER 7760 1.8 3.8 47 8.0 4.3 186 POWDER RIVER PASS 9480 2.2 3.4 65 4.2 4.0 105 SUCKER CREEK 8880 3.2 3.1 103 5.1 4.4 116 TIE CREEK 6870 .6 -M * 3.4 3.8 89 ----- ----- Basin wide percent of average 72 118 BELLE FOURCHE BLIND PARK 6890 1.4 3.6 39 7.4 3.4 218 NORTH RAPID CREEK 6130 .7 -M * 7.9 -M * WARREN PEAK 6520 1.7 3.6 47 7.6 2.8 271 ----- ----- Basin wide percent of average 43 242 UPPER N. PLATTE RIVER COLUMBINE 9400 3.2 5.5 58 6.2 6.6 94 DIVIDE PEAK 8800 5.0 6.1 82 11.1 7.2 154 ELK RIVER 8700 1.4 4.1 34 8.3 5.5 151 JOE WRIGHT 10120 4.8 7.0 69 9.1 8.2 111 NORTH FRENCH CREEK 10100 8.5 7.2 118 11.0 6.6 167 OLD BATTLE 10000 8.0 9.4 85 12.0 9.3 129 SOUTH BRUSH CREEK 8400 3.2 2.7 119 8.7 5.7 153 TOWER 10500 11.6 14.5 80 11.7 10.6 110 WEBBER SPRINGS 9200 4.4 7.5 59 8.8 9.0 98 WILLOW CREEK PASS 9540 3.9 3.5 111 4.9 4.1 120 ----- ----- Basin wide percent of average 80 126 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 4.1 7.6 54 6.5 5.6 116 CASPER MTN. 7900 2.9 5.0 58 8.6 5.4 159 DEADMAN HILL 10220 4.7 4.9 96 6.1 5.3 115 DEER PARK 9700 4.5 -M * 6.8 -M * LAPRELE CREEK 8320 .3 3.0 10 6.1 3.5 174 RENO HILL 8400 4.5 4.1 110 8.8 6.9 128 ROACH 9700 3.3 4.8 69 5.8 6.6 88 SAND LAKE 10080 9.7 9.5 102 10.9 6.3 173 SOUTH PASS 9040 4.3 5.6 77 6.1 5.6 109 WINDY PEAK 7840 .6 2.2 27 6.2 2.8 221 ----- ----- Basin wide percent of average 74 136 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 1.9 2.8 68 6.9 4.9 141 DIVIDE PEAK 8800 5.0 6.1 82 11.1 7.2 154 OLD BATTLE 10000 8.0 9.4 85 12.0 9.3 129 SANDSTONE RS 8150 1.7 3.4 50 7.9 5.6 141 WHISKEY PARK 8950 4.5 7.6 59 9.9 6.7 148 ----- ----- Basin wide percent of average 72 142 UPPER GREEN RIVER BIG SANDY OPENING 9100 3.8 3.4 112 4.0 5.0 80 BLIND BULL SUM 8650 6.0 8.0 75 6.3 6.7 94 EAST RIM DIVIDE 7930 2.3 2.0 115 3.4 4.7 72 ELKHART PARK G.S. 9400 3.3 3.4 97 4.2 5.0 84 GROS VENTRE SUMMIT 8775 4.6 3.9 118 5.2 5.0 104 KENDALL R.S. 7740 2.9 2.8 104 3.8 4.8 79 LOOMIS PARK 8240 3.2 3.7 86 4.6 5.9 78 NEW FORK LAKE 8340 2.2 2.4 92 3.1 4.5 69 SNIDER BASIN 8250 2.4 3.1 77 3.3 4.7 70 SPRING CREEK DIVIDE 9000 5.1 6.5 78 6.4 8.1 79 TRIPLE PEAK 8500 5.1 6.0 85 6.8 9.6 71 ----- ----- Basin wide percent of average 90 80 LOWER GREEN RIVER HAMS FORK 7840 1.3 2.0 65 2.9 4.2 69 HEWINTA 9500 1.6 2.5 64 4.2 4.6 91 HICKERSON PARK 9150 1.4 1.7 82 4.2 3.7 114 HOLE-IN-ROCK 9150 1.1 1.5 73 4.5 3.7 122 INDIAN CREEK 9425 5.2 6.7 78 5.3 7.8 68 KELLEY R.S. 8180 2.4 3.7 65 4.0 5.9 68 STEEL CREEK PARK 10100 3.8 5.2 73 5.5 4.8 115 ----- ----- Basin wide percent of average 72 88 UPPER BEAR RIVER BUG LAKE 7950 2.4 5.4 44 4.5 6.8 66 HAYDEN FORK 9400 2.6 4.0 65 5.6 5.8 97 KELLEY R.S. 8180 2.4 3.7 65 4.0 5.9 68 LILY LAKE 9050 3.5 3.8 92 5.9 5.2 113 MONTE CRISTO 8960 4.5 6.8 66 7.2 8.3 87 SALT RIVER SUMMIT 7600 1.7 2.5 68 4.4 5.2 85 TRIAL LAKE 9960 3.6 6.4 56 5.2 7.6 68 ----- ----- Basin wide percent of average 63 82 ----------------------------------------------------------------------------- -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.