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 7 , 2001 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 4.1 4.9 84 8.6 6.8 126 COTTONWOOD CREEK 7600 6.0 5.6 107 8.9 8.9 100 GRANITE CREEK 6770 5.2 4.2 124 9.1 6.0 152 GRASSY LAKE 7265 8.1 9.0 90 12.3 10.9 113 GROS VENTRE SUMMIT 8775 5.6 4.5 124 5.0 4.6 109 LEWIS LAKE DIVIDE 7860 9.7 9.1 107 11.8 11.1 106 PHILLIPS BENCH 8200 9.5 7.6 125 11.0 8.4 131 SALT RIVER SUMMIT 7600 4.2 3.2 131 6.4 5.7 112 SNAKE RIVER STATION 6920 -M 4.8 * -M 7.2 * SPRING CREEK DIVIDE 9000 6.8 8.0 85 9.6 8.3 116 THUMB DIVIDE 7980 4.9 4.7 104 7.3 6.0 122 TOGWOTEE PASS 9580 8.5 7.9 108 8.6 8.0 108 TWO OCEAN PLATEAU 9360 10.6 9.3 114 5.8 9.0 64 WILLOW CREEK 8450 7.3 9.0 81 12.9 10.3 125 ----- ----- Basin wide percent of average 104 113 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 7.4 7.9 94 6.9 6.4 108 BLACK BEAR 7950 13.9 11.2 124 15.0 11.7 128 CANYON 7940 4.6 3.8 121 5.8 5.4 107 FISHER CREEK 9100 10.2 10.6 96 10.3 10.0 103 MADISON PLATEAU 7750 7.7 7.2 107 11.3 8.0 141 NORTHEAST ENTRANCE 7350 1.8 3.0 60 3.8 4.5 84 PARKER PEAK 9400 6.3 7.5 84 5.5 6.1 90 SYLVAN LAKE 8420 6.3 7.2 88 8.4 8.1 104 THUMB DIVIDE 7980 4.9 4.7 104 7.3 6.0 122 TWO OCEAN PLATEAU 9360 10.6 9.3 114 5.8 9.0 64 WHISKEY CREEK 6800 4.8 4.6 104 8.6 6.6 130 WHITE MILL 8700 7.6 7.6 100 7.5 8.2 91 WOLVERINE 7650 2.4 3.5 69 4.1 4.6 89 ----- ----- Basin wide percent of average 100 106 WIND RIVER BURROUGHS CREEK 8750 5.5 4.4 125 6.0 5.5 109 COLD SPRINGS 9630 1.5 3.4 44 2.2 4.2 52 DEER PARK 9700 6.5 5.0 130 -M -M * HOBBS PARK 10100 4.2 5.9 71 3.5 5.0 70 LITTLE WARM 9620 3.5 3.8 92 4.7 4.7 100 SOUTH PASS 9040 5.2 5.7 91 6.3 6.0 105 ST. LAWRENCE ALT 8620 .9 3.0 30 1.9 3.5 54 TOGWOTEE PASS 9580 8.5 7.9 108 8.6 8.0 108 TOWNSEND CREEK 8700 1.6 3.3 48 2.0 4.7 43 ----- ----- Basin wide percent of average 88 85 BIGHORN BASIN BALD MTN. 9375 6.1 6.7 91 5.5 5.8 95 BEAR TRAP MEADOW 7900 1.8 1.8 100 3.9 3.6 108 BLACKWATER 9780 7.6 8.7 87 6.5 7.4 88 BONE SPRINGS DIV 9350 5.4 5.8 93 5.3 5.2 102 EVENING STAR 9200 7.9 9.6 82 9.7 9.0 108 GRAVE SPRINGS 8550 1.6 2.9 55 4.0 3.8 105 KIRWIN 9550 3.8 4.6 83 4.1 4.4 93 MARQUETTE 8760 1.3 4.0 32 1.5 3.9 38 MIDDLE POWDER 7760 1.7 4.0 42 4.0 4.9 82 OWL CREEK 8975 1.1 2.1 52 1.6 2.3 70 POWDER RIVER PASS 9480 4.4 3.7 119 5.8 4.3 135 SHELL CREEK 9580 6.3 5.5 115 6.0 4.7 128 SYLVAN LAKE 8420 6.3 7.2 88 8.4 8.1 104 SYLVAN ROAD 8120 2.9 4.1 71 6.9 7.5 92 TIMBER CREEK 7950 .5 2.4 21 1.7 3.4 50 YOUNTS PEAK 8350 5.0 5.3 94 6.0 5.5 109 ----- ----- Basin wide percent of average 81 97 SHOSHONE RIVER BLACKWATER 9780 7.6 8.7 87 6.5 7.4 88 EVENING STAR 9200 7.9 9.6 82 9.7 9.0 108 KIRWIN 9550 3.8 4.6 83 4.1 4.4 93 MARQUETTE 8760 1.3 4.0 32 1.5 3.9 38 SYLVAN LAKE 8420 6.3 7.2 88 8.4 8.1 104 SYLVAN ROAD 8120 2.9 4.1 71 6.9 7.5 92 YOUNTS PEAK 8350 5.0 5.3 94 6.0 5.5 109 ----- ----- Basin wide percent of average 80 94 POWDER-TONGUE BEAR TRAP MEADOW 7900 1.8 1.8 100 3.9 3.6 108 BIG GOOSE 7990 2.8 -M * 4.8 4.2 114 BONE SPRINGS DIV 9350 5.4 5.8 93 5.3 5.2 102 BURGESS JUNCTION 7880 2.3 3.9 59 4.0 4.4 91 CLOUD PEAK RESERVOIR 9860 4.2 4.1 102 5.3 5.4 98 DOME LAKE 8880 4.0 4.5 89 6.0 5.1 118 GRAVE SPRINGS 8550 1.6 2.9 55 4.0 3.8 105 HANSEN SAWMILL 8760 1.4 2.3 61 3.4 3.4 100 MIDDLE POWDER 7760 1.7 4.0 42 4.0 4.9 82 POWDER RIVER PASS 9480 4.4 3.7 119 5.8 4.3 135 SUCKER CREEK 8880 3.3 3.6 92 5.4 4.9 110 TIE CREEK 6870 .8 1.3 62 4.1 3.7 111 ----- ----- Basin wide percent of average 82 106 BELLE FOURCHE BLIND PARK 6890 1.7 2.2 77 3.8 3.9 97 COLE CANYON 5910 .5 -M * 2.0 -M * NORTH RAPID CREEK 6130 2.2 -M * 3.1 3.5 89 ----- ----- Basin wide percent of average 77* 93 UPPER N. PLATTE RIVER COLUMBINE 9400 5.0 5.9 85 6.5 7.2 90 DIVIDE PEAK 8800 5.1 5.9 86 6.1 6.8 90 ELK RIVER 8700 3.6 3.8 95 5.4 5.8 93 JOE WRIGHT 10120 6.7 6.9 97 7.1 8.4 85 NORTH FRENCH CREEK 10100 4.7 8.9 53 4.9 8.2 60 OLD BATTLE 10000 8.3 10.2 81 10.0 10.4 96 SAGE CREEK BASIN 7850 3.5 -M * 6.6 -M * SOUTH BRUSH CREEK 8400 2.5 3.3 76 3.3 5.6 59 TOWER 10500 10.3 14.2 73 10.9 11.8 92 WEBBER SPRINGS 9200 6.6 7.6 87 7.9 8.6 92 WILLOW CREEK PASS 9540 2.7 4.0 68 3.7 4.7 79 ----- ----- Basin wide percent of average 79 85 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 4.1 6.9 59 4.8 6.9 70 CASPER MTN. 7900 3.4 5.1 67 5.4 5.6 96 DEADMAN HILL 10220 2.9 5.5 53 4.1 5.7 72 DEER PARK 9700 6.5 5.0 130 -M -M * LAPRELE CREEK 8320 1.6 3.6 44 4.5 4.6 98 RENO HILL 8400 3.0 4.8 62 4.6 5.4 85 ROACH 9700 2.6 4.9 53 4.1 5.8 71 SAND LAKE 10080 7.1 10.4 68 7.2 7.9 91 SOUTH PASS 9040 5.2 5.7 91 6.3 6.0 105 WINDY PEAK 7840 1.2 2.6 46 3.7 4.0 92 ----- ----- Basin wide percent of average 69 86 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 3.7 2.2 168 1.8 4.8 38 DIVIDE PEAK 8800 5.1 5.9 86 6.1 6.8 90 OLD BATTLE 10000 8.3 10.2 81 10.0 10.4 96 SANDSTONE RS 8150 3.1 2.9 107 6.3 6.1 103 WHISKEY PARK 8950 6.4 7.0 91 8.6 8.6 100 ----- ----- Basin wide percent of average 94 89 UPPER GREEN RIVER BIG SANDY OPENING 9100 6.1 4.6 133 5.4 4.6 117 BLIND BULL SUM 8650 9.6 8.3 116 9.0 7.2 125 EAST RIM DIVIDE 7930 3.3 3.8 87 5.2 3.8 137 ELKHART PARK G.S. 9400 4.9 4.1 120 5.6 4.7 119 GROS VENTRE SUMMIT 8775 5.6 4.5 124 5.0 4.6 109 KENDALL R.S. 7740 3.8 3.9 97 6.2 4.5 138 LOOMIS PARK 8240 6.2 5.1 122 7.2 5.5 131 NEW FORK LAKE 8340 3.5 3.3 106 4.5 4.2 107 SNIDER BASIN 8250 1.7 4.3 40 5.7 5.1 112 SPRING CREEK DIVIDE 9000 6.8 8.0 85 9.6 8.3 116 TRIPLE PEAK 8500 8.0 7.4 108 10.2 7.3 140 ----- ----- Basin wide percent of average 104 123 LOWER GREEN RIVER HAMS FORK 7840 4.4 3.1 142 4.1 3.9 105 HEWINTA 9500 3.5 2.5 140 5.7 5.2 110 HICKERSON PARK 9150 1.6 1.8 89 3.8 3.4 112 HOLE-IN-ROCK 9150 2.1 1.7 124 3.9 3.1 126 INDIAN CREEK 9425 9.2 7.9 116 8.4 7.8 108 KELLEY R.S. 8180 5.6 4.9 114 7.6 6.4 119 STEEL CREEK PARK 10100 4.5 4.5 100 5.4 5.6 96 ----- ----- Basin wide percent of average 117 110 UPPER BEAR RIVER BUG LAKE 7950 5.1 4.8 106 8.1 6.3 129 HAYDEN FORK 9400 5.8 3.7 157 9.1 6.8 134 KELLEY R.S. 8180 5.6 4.9 114 7.6 6.4 119 LILY LAKE 9050 4.4 3.4 129 6.8 6.2 110 MONTE CRISTO 8960 8.0 6.2 129 9.8 8.0 123 SALT RIVER SUMMIT 7600 4.2 3.2 131 6.4 5.7 112 TRIAL LAKE 9960 8.6 6.5 132 11.0 7.5 147 ----- ----- Basin wide percent of average 128 125 ----------------------------------------------------------------------------- -M = Missing data * = Data may not provide a valid measure of conditions. Units = inches for the Current and Average Snow Water Equivalent and Total Precipitation values 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 1971-2000. 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.