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 MONDAY: DECEMBER 14 , 1998 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 4.8 5.6 86 6.9 8.5 81 COTTONWOOD CREEK 7600 4.2 6.2 68 7.5 9.0 83 GRANITE CREEK 6770 3.3 5.2 63 5.2 8.9 58 GRASSY LAKE 7265 9.2 10.0 92 11.3 13.7 82 GROS VENTRE SUMMIT 8775 4.7 5.1 92 5.4 6.1 89 LEWIS LAKE DIVIDE 7860 9.3 9.8 95 11.8 13.9 85 PHILLIPS BENCH 8200 7.0 8.0 88 7.8 10.8 72 SALT RIVER SUMMIT 7600 2.1 3.3 64 4.8 6.4 75 SNAKE RIVER STATION 6920 4.9 5.5 89 7.1 9.6 74 SPRING CREEK DIVIDE 9000 5.6 8.6 65 6.8 9.9 69 THUMB DIVIDE 7980 7.7 5.2 148 8.2 7.9 104 TOGWOTEE PASS 9580 8.0 8.4 95 8.5 10.4 82 TWO OCEAN PLATEAU 9360 11.8 10.0 118 10.9 11.7 93 WILLOW CREEK 8450 6.7 9.3 72 12.1 11.8 103 ----- ----- Basin wide percent of average 89 82 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 7.6 8.9 85 7.0 6.5 108 BLACK BEAR 7950 15.0 11.5 130 15.0 13.0 115 CANYON 7940 4.9 3.9 126 5.9 5.4 109 FISHER CREEK 9100 12.9 11.7 110 12.2 12.1 101 MADISON PLATEAU 7750 -M 7.4 * 11.3 8.9 127 NORTHEAST ENTRANCE 7350 2.5 2.8 89 4.4 4.6 96 PARKER PEAK 9400 7.3 8.9 82 -M 6.1 * SYLVAN LAKE 8420 9.0 8.7 103 11.2 7.9 142 THUMB DIVIDE 7980 7.7 5.2 148 8.2 7.9 104 TWO OCEAN PLATEAU 9360 11.8 10.0 118 10.9 11.7 93 WHISKEY CREEK 6800 6.9 5.1 135 8.9 7.3 122 WHITE MILL 8700 7.7 8.3 93 7.8 9.7 80 WOLVERINE 7650 3.8 3.6 106 4.4 5.1 86 ----- ----- Basin wide percent of average 110 107 WIND RIVER BURROUGHS CREEK 8750 -M 5.3 * -M 6.4 * COLD SPRINGS 9630 4.2 3.5 120 5.6 4.6 122 DEER PARK 9700 4.9 -M * 7.1 -M * HOBBS PARK 10100 7.3 6.2 118 7.4 5.4 137 LITTLE WARM 9620 -M 4.1 * -M 5.4 * SOUTH PASS 9040 4.7 6.7 70 6.5 6.4 102 ST. LAWRENCE ALT 8620 3.4 2.6 131 6.0 4.3 140 TOGWOTEE PASS 9580 8.0 8.4 95 8.5 10.4 82 TOWNSEND CREEK 8700 3.9 3.5 111 6.6 4.7 140 ----- ----- Basin wide percent of average 102 113 BIGHORN BASIN BALD MTN. 9375 5.5 7.9 70 5.8 6.6 88 BEAR TRAP MEADOW 7900 2.3 2.8 82 5.6 3.6 156 BLACKWATER 9780 11.3 7.6 149 10.2 6.9 148 BONE SPRINGS DIV 9350 4.5 6.3 71 5.1 5.4 94 EVENING STAR 9200 10.4 10.6 98 10.8 8.5 127 GRAVE SPRINGS 8550 2.5 3.6 69 5.6 4.2 133 KIRWIN 9550 4.8 4.2 114 5.4 4.3 126 MARQUETTE 8760 4.9 3.1 158 5.8 4.0 145 MIDDLE POWDER 7760 2.4 4.6 52 8.5 4.9 173 OWL CREEK 8975 2.9 1.4 207 3.9 2.3 170 POWDER RIVER PASS 9480 2.6 4.1 63 4.5 4.6 98 SHELL CREEK 9580 5.0 6.0 83 4.5 5.1 88 SYLVAN LAKE 8420 9.0 8.7 103 11.2 7.9 142 SYLVAN ROAD 8120 5.2 4.5 116 6.7 6.4 105 TIMBER CREEK 7950 2.8 1.8 156 4.4 2.8 157 YOUNTS PEAK 8350 5.9 7.0 84 5.5 6.3 87 ----- ----- Basin wide percent of average 97 124 SHOSHONE RIVER BLACKWATER 9780 11.3 7.6 149 10.2 6.9 148 EVENING STAR 9200 10.4 10.6 98 10.8 8.5 127 KIRWIN 9550 4.8 4.2 114 5.4 4.3 126 MARQUETTE 8760 4.9 3.1 158 5.8 4.0 145 SYLVAN LAKE 8420 9.0 8.7 103 11.2 7.9 142 SYLVAN ROAD 8120 5.2 4.5 116 6.7 6.4 105 YOUNTS PEAK 8350 5.9 7.0 84 5.5 6.3 87 ----- ----- Basin wide percent of average 113 126 POWDER-TONGUE BEAR TRAP MEADOW 7900 2.3 2.8 82 5.6 3.6 156 BIG GOOSE 7990 2.2 -M * 5.3 -M * BONE SPRINGS DIV 9350 4.5 6.3 71 5.1 5.4 94 BURGESS JUNCTION 7880 2.4 4.4 55 4.6 4.6 100 CLOUD PEAK RESERVOIR 9860 4.3 4.4 98 6.0 5.1 118 DOME LAKE 8880 2.6 5.0 52 4.2 5.6 75 GRAVE SPRINGS 8550 2.5 3.6 69 5.6 4.2 133 HANSEN SAWMILL 8760 2.3 2.7 85 3.7 3.4 109 MIDDLE POWDER 7760 2.4 4.6 52 8.5 4.9 173 POWDER RIVER PASS 9480 2.6 4.1 63 4.5 4.6 98 SUCKER CREEK 8880 3.7 3.8 97 5.8 5.2 112 TIE CREEK 6870 .7 -M * 3.8 4.4 86 ----- ----- Basin wide percent of average 71 113 BELLE FOURCHE BLIND PARK 6890 1.2 4.2 29 7.7 3.9 197 NORTH RAPID CREEK 6130 1.4 -M * 8.1 -M * WARREN PEAK 6520 1.7 4.2 40 7.6 3.2 238 ----- ----- Basin wide percent of average 35 215 UPPER N. PLATTE RIVER COLUMBINE 9400 3.3 7.0 47 6.4 8.1 79 DIVIDE PEAK 8800 5.5 7.5 73 11.8 8.9 133 ELK RIVER 8700 2.2 5.6 39 8.3 6.7 124 JOE WRIGHT 10120 6.5 8.4 77 9.6 9.4 102 NORTH FRENCH CREEK 10100 8.9 8.8 101 11.5 8.1 142 OLD BATTLE 10000 8.5 11.6 73 12.7 11.1 114 SOUTH BRUSH CREEK 8400 3.0 3.5 86 9.5 7.2 132 TOWER 10500 11.4 17.3 66 12.7 12.8 99 WEBBER SPRINGS 9200 4.8 9.3 52 9.3 10.5 89 WILLOW CREEK PASS 9540 4.1 4.3 95 5.1 4.8 106 ----- ----- Basin wide percent of average 70 111 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 4.5 9.4 48 6.9 6.7 103 CASPER MTN. 7900 3.0 6.2 48 9.0 6.0 150 DEADMAN HILL 10220 5.9 6.1 97 6.7 6.1 110 DEER PARK 9700 4.9 -M * 7.1 -M * LAPRELE CREEK 8320 .6 3.6 17 6.7 4.1 163 RENO HILL 8400 4.6 4.9 94 9.2 7.9 116 ROACH 9700 3.7 6.0 62 6.8 7.9 86 SAND LAKE 10080 9.9 11.7 85 11.7 7.4 158 SOUTH PASS 9040 4.7 6.7 70 6.5 6.4 102 WINDY PEAK 7840 1.1 2.7 41 7.2 3.3 218 ----- ----- Basin wide percent of average 66 127 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 1.7 3.6 47 7.5 5.8 129 DIVIDE PEAK 8800 5.5 7.5 73 11.8 8.9 133 OLD BATTLE 10000 8.5 11.6 73 12.7 11.1 114 SANDSTONE RS 8150 2.3 4.5 51 8.3 6.8 122 WHISKEY PARK 8950 5.2 9.6 54 10.3 8.5 121 ----- ----- Basin wide percent of average 63 123 UPPER GREEN RIVER BIG SANDY OPENING 9100 4.4 4.3 102 4.2 6.2 68 BLIND BULL SUM 8650 6.2 9.9 63 6.7 8.2 82 EAST RIM DIVIDE 7930 2.6 3.9 67 3.5 5.7 61 ELKHART PARK G.S. 9400 3.5 4.3 81 4.3 6.1 70 GROS VENTRE SUMMIT 8775 4.7 5.1 92 5.4 6.1 89 KENDALL R.S. 7740 3.0 4.0 75 3.7 5.9 63 LOOMIS PARK 8240 3.2 5.0 64 4.6 7.2 64 NEW FORK LAKE 8340 2.5 3.2 78 3.2 5.5 58 SNIDER BASIN 8250 2.2 4.2 52 3.5 5.7 61 SPRING CREEK DIVIDE 9000 5.6 8.6 65 6.8 9.9 69 TRIPLE PEAK 8500 5.2 7.8 67 7.0 11.8 59 ----- ----- Basin wide percent of average 71 68 LOWER GREEN RIVER HAMS FORK 7840 1.4 2.9 48 3.1 5.1 61 HEWINTA 9500 2.2 3.0 73 4.8 5.2 92 HICKERSON PARK 9150 2.0 2.1 95 4.9 4.1 120 HOLE-IN-ROCK 9150 2.0 1.9 105 5.3 4.1 129 INDIAN CREEK 9425 5.6 8.5 66 6.0 9.5 63 KELLEY R.S. 8180 2.7 4.9 55 4.5 7.1 63 STEEL CREEK PARK 10100 3.5 5.8 60 6.3 5.5 115 ----- ----- Basin wide percent of average 67 86 UPPER BEAR RIVER BUG LAKE 7950 2.9 6.8 43 5.1 7.8 65 HAYDEN FORK 9400 3.4 5.0 68 6.4 6.9 93 KELLEY R.S. 8180 2.7 4.9 55 4.5 7.1 63 LILY LAKE 9050 3.6 4.5 80 6.8 5.9 115 MONTE CRISTO 8960 5.4 8.6 63 8.4 9.7 87 SALT RIVER SUMMIT 7600 2.1 3.3 64 4.8 6.4 75 TRIAL LAKE 9960 4.0 7.9 51 5.6 8.8 64 ----- ----- Basin wide percent of average 59 79 ----------------------------------------------------------------------------- -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.