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: DECEMBER 20 , 2001 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 5.7 6.6 86 10.2 8.6 119 COTTONWOOD CREEK 7600 7.8 7.7 101 10.7 11.2 96 GRANITE CREEK 6770 7.0 6.0 117 10.7 7.8 137 GRASSY LAKE 7265 11.0 11.9 92 15.5 14.1 110 GROS VENTRE SUMMIT 8775 6.5 5.8 112 5.9 5.5 107 LEWIS LAKE DIVIDE 7860 12.6 12.0 105 15.1 14.3 106 PHILLIPS BENCH 8200 11.2 10.3 109 13.0 10.9 119 SALT RIVER SUMMIT 7600 5.3 4.3 123 7.6 7.3 104 SNAKE RIVER STATION 6920 -M 6.4 * -M 9.1 * SPRING CREEK DIVIDE 9000 11.7 10.5 111 11.7 10.6 110 THUMB DIVIDE 7980 6.0 6.2 97 8.3 7.6 109 TOGWOTEE PASS 9580 9.8 9.9 99 9.8 10.0 98 TWO OCEAN PLATEAU 9360 12.2 11.5 106 10.8 11.2 96 WILLOW CREEK 8450 9.5 11.8 81 15.2 12.9 118 ----- ----- Basin wide percent of average 102 109 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 8.8 9.8 90 8.0 8.2 98 BLACK BEAR 8170 18.0 14.4 125 19.1 14.8 129 CANYON 8090 5.8 5.0 116 7.0 6.7 104 FISHER CREEK 9100 13.1 13.8 95 12.8 12.7 101 MADISON PLATEAU 7750 9.9 9.4 105 13.7 10.0 137 NORTHEAST ENTRANCE 7350 2.5 4.1 61 4.6 5.5 84 PARKER PEAK 9400 7.9 9.1 87 6.9 7.5 92 SYLVAN LAKE 8420 7.8 8.9 88 10.0 10.1 99 THUMB DIVIDE 7980 6.0 6.2 97 8.3 7.6 109 TWO OCEAN PLATEAU 9360 12.2 11.5 106 10.8 11.2 96 WHISKEY CREEK 6800 6.8 6.2 110 10.8 8.3 130 WHITE MILL 8700 -M 9.5 * -M 10.3 * WOLVERINE 7650 3.3 4.7 70 4.8 5.8 83 ----- ----- Basin wide percent of average 99 108 WIND RIVER BURROUGHS CREEK 8750 6.3 5.6 112 6.8 6.9 99 COLD SPRINGS 9630 1.8 4.1 44 2.6 4.9 53 DEER PARK 9700 7.0 5.9 119 8.8 -M * HOBBS PARK 10100 4.5 6.9 65 3.9 5.8 67 LITTLE WARM 9370 4.1 4.6 89 5.2 5.7 91 SOUTH PASS 9040 5.9 7.2 82 6.9 7.2 96 ST. LAWRENCE ALT 8620 1.1 3.4 32 2.1 4.0 52 TOGWOTEE PASS 9580 9.8 9.9 99 9.8 10.0 98 TOWNSEND CREEK 8700 1.9 3.9 49 2.3 5.4 43 ----- ----- Basin wide percent of average 82 79 BIGHORN BASIN BALD MTN. 9380 7.2 8.3 87 6.4 7.1 90 BEAR TRAP MEADOW 8200 2.4 2.2 109 4.6 4.0 115 BLACKWATER 9780 8.3 10.5 79 7.5 9.0 83 BONE SPRINGS DIV 9350 6.2 6.8 91 6.0 6.2 97 EVENING STAR 9200 10.0 11.9 84 11.6 11.2 104 GRAVE SPRINGS 8550 2.2 3.4 65 4.7 4.6 102 KIRWIN 9550 4.1 5.3 77 4.4 5.1 86 MARQUETTE 8760 1.8 4.5 40 2.1 4.4 48 MIDDLE POWDER 7760 2.4 4.9 49 4.7 5.7 82 OWL CREEK 8975 1.3 2.4 54 1.8 2.6 69 POWDER RIVER PASS 9480 4.8 4.5 107 6.2 5.1 122 SHELL CREEK 9580 7.1 6.4 111 6.7 5.6 120 SYLVAN LAKE 8420 7.8 8.9 88 10.0 10.1 99 SYLVAN ROAD 7120 3.6 5.3 68 7.8 9.5 82 TIMBER CREEK 7950 .5 2.7 19 1.8 3.9 46 YOUNTS PEAK 8350 5.8 6.7 87 6.8 6.8 100 ----- ----- Basin wide percent of average 80 92 SHOSHONE RIVER BLACKWATER 9780 8.3 10.5 79 7.5 9.0 83 EVENING STAR 9200 10.0 11.9 84 11.6 11.2 104 KIRWIN 9550 4.1 5.3 77 4.4 5.1 86 MARQUETTE 8760 1.8 4.5 40 2.1 4.4 48 SYLVAN LAKE 8420 7.8 8.9 88 10.0 10.1 99 SYLVAN ROAD 7120 3.6 5.3 68 7.8 9.5 82 YOUNTS PEAK 8350 5.8 6.7 87 6.8 6.8 100 ----- ----- Basin wide percent of average 78 89 POWDER-TONGUE BEAR TRAP MEADOW 8200 2.4 2.2 109 4.6 4.0 115 BIG GOOSE 7990 3.2 -M * 5.2 4.7 111 BONE SPRINGS DIV 9350 6.2 6.8 91 6.0 6.2 97 BURGESS JUNCTION 7880 2.8 4.7 60 4.3 5.2 83 CLOUD PEAK RESERVOIR 9860 4.9 4.9 100 5.9 6.2 95 DOME LAKE 8880 4.7 5.3 89 6.8 5.9 115 GRAVE SPRINGS 8550 2.2 3.4 65 4.7 4.6 102 HANSEN SAWMILL 8360 1.6 2.8 57 3.6 3.8 95 MIDDLE POWDER 7760 2.4 4.9 49 4.7 5.7 82 POWDER RIVER PASS 9480 4.8 4.5 107 6.2 5.1 122 SUCKER CREEK 8880 3.8 4.4 86 5.9 5.7 104 TIE CREEK 6870 1.0 1.8 56 4.5 4.2 107 ----- ----- Basin wide percent of average 81 102 BELLE FOURCHE BLIND PARK 6890 1.8 2.8 64 4.0 4.6 87 COLE CANYON 5910 .7 -M * 1.8 -M * NORTH RAPID CREEK 6130 2.5 -M * 3.3 4.1 80 ----- ----- Basin wide percent of average 64* 84 UPPER N. PLATTE RIVER COLUMBINE 9400 5.9 8.0 74 7.5 9.3 81 DIVIDE PEAK 8800 6.0 7.6 79 7.0 8.4 83 ELK RIVER 8700 4.5 5.5 82 6.2 7.4 84 JOE WRIGHT 10120 7.3 8.3 88 7.7 10.2 75 NORTH FRENCH CREEK 10100 4.7 11.2 42 5.8 10.1 57 OLD BATTLE 10000 9.5 12.6 75 11.6 13.2 88 SAGE CREEK BASIN 7850 -M -M * -M -M * SOUTH BRUSH CREEK 8400 2.9 4.3 67 3.9 6.7 58 TOWER 10500 11.6 17.6 66 12.4 14.9 83 WEBBER SPRINGS 9200 7.5 9.7 77 8.9 10.8 82 WILLOW CREEK PASS 9540 3.1 4.8 65 4.0 5.6 71 ----- ----- Basin wide percent of average 70 78 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 4.7 8.9 53 5.6 8.5 66 CASPER MTN. 7900 3.9 6.1 64 5.8 6.4 91 DEADMAN HILL 10220 3.2 6.6 48 4.4 6.8 65 DEER PARK 9700 7.0 5.9 119 8.8 -M * LAPRELE CREEK 8320 2.1 4.5 47 4.9 5.4 91 RENO HILL 8400 3.5 5.8 60 4.9 6.3 78 ROACH 9700 3.0 6.1 49 4.6 7.2 64 SAND LAKE 10080 7.3 12.8 57 7.8 9.7 80 SOUTH PASS 9040 5.9 7.2 82 6.9 7.2 96 WINDY PEAK 7840 1.4 3.1 45 4.2 4.8 88 ----- ----- Basin wide percent of average 63 79 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 4.3 3.0 143 -M 6.0 * DIVIDE PEAK 8800 6.0 7.6 79 7.0 8.4 83 OLD BATTLE 10000 9.5 12.6 75 11.6 13.2 88 SANDSTONE RS 8150 3.4 4.0 85 7.2 7.5 96 WHISKEY PARK 8950 7.9 9.1 87 9.9 10.9 91 ----- ----- Basin wide percent of average 86 89 UPPER GREEN RIVER BIG SANDY OPENING 9100 7.2 5.8 124 6.4 5.6 114 BLIND BULL SUM 8650 11.2 10.9 103 10.5 9.1 115 EAST RIM DIVIDE 7930 4.4 4.9 90 6.1 4.8 127 ELKHART PARK G.S. 9400 6.0 5.2 115 6.7 5.7 118 GROS VENTRE SUMMIT 8775 6.5 5.8 112 5.9 5.5 107 KENDALL R.S. 7740 4.9 5.4 91 7.2 5.7 126 LOOMIS PARK 8240 7.7 6.7 115 8.4 6.9 122 NEW FORK LAKE 8340 4.5 4.4 102 5.3 5.0 106 SNIDER BASIN 8250 4.1 5.7 72 6.5 6.5 100 SPRING CREEK DIVIDE 9000 11.7 10.5 111 11.7 10.6 110 TRIPLE PEAK 8500 9.9 9.8 101 11.6 9.2 126 ----- ----- Basin wide percent of average 104 116 LOWER GREEN RIVER HAMS FORK 7840 5.3 4.3 123 4.9 4.8 102 HEWINTA 9500 3.3 3.3 100 6.5 6.1 107 HICKERSON PARK 9150 1.8 2.3 78 3.6 3.8 95 HOLE-IN-ROCK 9150 2.4 2.2 109 3.8 3.5 109 INDIAN CREEK 9425 11.2 10.3 109 10.0 10.0 100 KELLEY R.S. 8180 7.0 6.3 111 8.9 8.2 109 STEEL CREEK PARK 10100 5.4 5.6 96 5.9 6.6 89 ----- ----- Basin wide percent of average 106 101 UPPER BEAR RIVER BUG LAKE 7950 6.9 6.5 106 9.1 7.7 118 HAYDEN FORK 9400 6.1 5.0 122 10.0 8.4 119 KELLEY R.S. 8180 7.0 6.3 111 8.9 8.2 109 LILY LAKE 9050 4.8 4.4 109 7.8 7.4 105 MONTE CRISTO 8960 9.2 8.6 107 11.3 10.0 113 SALT RIVER SUMMIT 7600 5.3 4.3 123 7.6 7.3 104 TRIAL LAKE 9960 9.1 8.5 107 12.0 9.4 128 ----- ----- Basin wide percent of average 111 114 ----------------------------------------------------------------------------- -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.