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 17 , 2001 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 5.0 6.2 81 9.5 8.2 116 COTTONWOOD CREEK 7600 6.7 7.2 93 9.5 10.6 90 GRANITE CREEK 6770 5.7 5.6 102 9.7 7.4 131 GRASSY LAKE 7265 9.8 11.3 87 14.2 13.4 106 GROS VENTRE SUMMIT 8775 6.1 5.5 111 5.5 5.3 104 LEWIS LAKE DIVIDE 7860 11.4 11.4 100 13.9 13.6 102 PHILLIPS BENCH 8200 10.1 9.7 104 11.9 10.3 116 SALT RIVER SUMMIT 7600 4.6 4.1 112 7.0 6.9 101 SNAKE RIVER STATION 6920 -M 6.0 * -M 8.7 * SPRING CREEK DIVIDE 9000 10.1 9.9 102 10.5 10.1 104 THUMB DIVIDE 7980 5.5 5.8 95 7.8 7.2 108 TOGWOTEE PASS 9580 9.1 9.4 97 9.2 9.6 96 TWO OCEAN PLATEAU 9360 11.3 11.0 103 9.9 10.7 93 WILLOW CREEK 8450 8.4 11.1 76 14.1 12.3 115 ----- ----- Basin wide percent of average 96 106 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 8.3 9.4 88 7.7 7.8 99 BLACK BEAR 8170 16.5 13.8 120 17.9 14.1 127 CANYON 8090 5.3 4.7 113 6.6 6.4 103 FISHER CREEK 9100 11.9 13.1 91 11.7 12.1 97 MADISON PLATEAU 7750 9.2 8.9 103 12.9 9.6 134 NORTHEAST ENTRANCE 7350 2.3 3.9 59 4.3 5.3 81 PARKER PEAK 9400 7.3 8.7 84 6.4 7.2 89 SYLVAN LAKE 8420 7.2 8.6 84 9.5 9.6 99 THUMB DIVIDE 7980 5.5 5.8 95 7.8 7.2 108 TWO OCEAN PLATEAU 9360 11.3 11.0 103 9.9 10.7 93 WHISKEY CREEK 6800 6.1 5.8 105 10.0 7.9 127 WHITE MILL 8700 -M 9.2 * -M 9.8 * WOLVERINE 7650 3.0 4.4 68 4.8 5.5 87 ----- ----- Basin wide percent of average 96 106 WIND RIVER BURROUGHS CREEK 8750 5.8 5.4 107 6.4 6.6 97 COLD SPRINGS 9630 1.8 4.0 45 2.6 4.7 55 DEER PARK 9700 6.9 5.7 121 8.7 -M * HOBBS PARK 10100 4.5 6.7 67 3.9 5.6 70 LITTLE WARM 9370 4.0 4.4 91 5.0 5.5 91 SOUTH PASS 9040 5.8 7.0 83 6.9 6.9 100 ST. LAWRENCE ALT 8620 1.1 3.4 32 2.1 3.9 54 TOGWOTEE PASS 9580 9.1 9.4 97 9.2 9.6 96 TOWNSEND CREEK 8700 1.9 3.8 50 2.5 5.3 47 ----- ----- Basin wide percent of average 82 80 BIGHORN BASIN BALD MTN. 9380 7.1 7.9 90 6.5 6.8 96 BEAR TRAP MEADOW 8200 2.1 2.2 95 4.2 3.9 108 BLACKWATER 9780 8.0 10.1 79 7.2 8.6 84 BONE SPRINGS DIV 9350 6.1 6.6 92 6.0 6.0 100 EVENING STAR 9200 9.1 11.4 80 10.7 10.7 100 GRAVE SPRINGS 8550 1.9 3.2 59 4.3 4.4 98 KIRWIN 9550 4.2 5.2 81 4.5 5.0 90 MARQUETTE 8760 1.9 4.4 43 2.4 4.3 56 MIDDLE POWDER 7760 2.1 4.7 45 4.4 5.5 80 OWL CREEK 8975 1.5 2.3 65 1.9 2.6 73 POWDER RIVER PASS 9480 4.7 4.3 109 6.0 4.9 122 SHELL CREEK 9580 6.9 6.2 111 6.5 5.4 120 SYLVAN LAKE 8420 7.2 8.6 84 9.5 9.6 99 SYLVAN ROAD 7120 3.2 5.1 63 7.4 9.1 81 TIMBER CREEK 7950 .6 2.6 23 1.8 3.8 47 YOUNTS PEAK 8350 5.4 6.4 84 6.4 6.5 98 ----- ----- Basin wide percent of average 79 92 SHOSHONE RIVER BLACKWATER 9780 8.0 10.1 79 7.2 8.6 84 EVENING STAR 9200 9.1 11.4 80 10.7 10.7 100 KIRWIN 9550 4.2 5.2 81 4.5 5.0 90 MARQUETTE 8760 1.9 4.4 43 2.4 4.3 56 SYLVAN LAKE 8420 7.2 8.6 84 9.5 9.6 99 SYLVAN ROAD 7120 3.2 5.1 63 7.4 9.1 81 YOUNTS PEAK 8350 5.4 6.4 84 6.4 6.5 98 ----- ----- Basin wide percent of average 76 89 POWDER-TONGUE BEAR TRAP MEADOW 8200 2.1 2.2 95 4.2 3.9 108 BIG GOOSE 7990 3.1 -M * 5.0 4.6 109 BONE SPRINGS DIV 9350 6.1 6.6 92 6.0 6.0 100 BURGESS JUNCTION 7880 3.0 4.5 67 4.5 5.0 90 CLOUD PEAK RESERVOIR 9860 4.8 4.7 102 5.8 6.0 97 DOME LAKE 8880 4.6 5.1 90 6.5 5.7 114 GRAVE SPRINGS 8550 1.9 3.2 59 4.3 4.4 98 HANSEN SAWMILL 8360 1.7 2.7 63 3.6 3.7 97 MIDDLE POWDER 7760 2.1 4.7 45 4.4 5.5 80 POWDER RIVER PASS 9480 4.7 4.3 109 6.0 4.9 122 SUCKER CREEK 8880 3.8 4.2 90 6.0 5.5 109 TIE CREEK 6870 1.0 1.6 62 4.5 4.1 110 ----- ----- Basin wide percent of average 82 103 BELLE FOURCHE BLIND PARK 6890 1.6 2.6 62 3.8 4.5 84 COLE CANYON 5910 .8 -M * 1.9 -M * NORTH RAPID CREEK 6130 2.4 -M * 3.2 3.9 82 ----- ----- Basin wide percent of average 62* 83 UPPER N. PLATTE RIVER COLUMBINE 9400 5.8 7.4 78 7.4 8.8 84 DIVIDE PEAK 8800 5.8 7.2 81 6.7 8.1 83 ELK RIVER 8700 4.3 5.1 84 6.0 7.0 86 JOE WRIGHT 10120 7.1 7.9 90 7.5 9.8 77 NORTH FRENCH CREEK 10100 5.2 10.7 49 5.5 9.7 57 OLD BATTLE 10000 -M 12.1 * -M 12.6 * SAGE CREEK BASIN 7850 -M -M * -M -M * SOUTH BRUSH CREEK 8400 2.7 4.0 68 3.7 6.4 58 TOWER 10500 11.4 16.8 68 12.2 14.2 86 WEBBER SPRINGS 9200 7.4 9.2 80 8.8 10.3 85 WILLOW CREEK PASS 9540 3.2 4.6 70 3.8 5.4 70 ----- ----- Basin wide percent of average 73 77 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 4.6 8.4 55 5.5 8.1 68 CASPER MTN. 7900 3.8 5.8 66 5.5 6.2 89 DEADMAN HILL 10220 3.0 6.4 47 4.3 6.5 66 DEER PARK 9700 6.9 5.7 121 8.7 -M * LAPRELE CREEK 8320 1.9 4.3 44 4.6 5.2 88 RENO HILL 8400 3.4 5.5 62 4.8 6.1 79 ROACH 9700 2.9 5.8 50 4.6 6.9 67 SAND LAKE 10080 7.3 12.3 59 7.7 9.3 83 SOUTH PASS 9040 5.8 7.0 83 6.9 6.9 100 WINDY PEAK 7840 1.1 3.0 37 3.9 4.6 85 ----- ----- Basin wide percent of average 63 80 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 4.1 2.8 146 2.0 5.7 35 DIVIDE PEAK 8800 5.8 7.2 81 6.7 8.1 83 OLD BATTLE 10000 -M 12.1 * -M 12.6 * SANDSTONE RS 8150 3.4 3.7 92 7.2 7.2 100 WHISKEY PARK 8950 7.6 8.5 89 9.7 10.4 93 ----- ----- Basin wide percent of average 94 82 UPPER GREEN RIVER BIG SANDY OPENING 9100 6.7 5.6 120 6.0 5.4 111 BLIND BULL SUM 8650 10.2 10.3 99 9.7 8.7 111 EAST RIM DIVIDE 7930 3.9 4.7 83 5.7 4.6 124 ELKHART PARK G.S. 9400 5.6 5.0 112 6.3 5.5 115 GROS VENTRE SUMMIT 8775 6.1 5.5 111 5.5 5.3 104 KENDALL R.S. 7740 4.3 5.0 86 6.6 5.4 122 LOOMIS PARK 8240 7.0 6.3 111 7.8 6.6 118 NEW FORK LAKE 8340 4.1 4.2 98 5.0 4.8 104 SNIDER BASIN 8250 1.4 5.4 26 6.0 6.2 97 SPRING CREEK DIVIDE 9000 10.1 9.9 102 10.5 10.1 104 TRIPLE PEAK 8500 8.9 9.3 96 10.8 8.8 123 ----- ----- Basin wide percent of average 96 112 LOWER GREEN RIVER HAMS FORK 7840 4.9 4.0 123 4.4 4.6 96 HEWINTA 9500 3.2 3.0 107 6.5 5.9 110 HICKERSON PARK 9150 1.9 2.2 86 3.8 3.7 103 HOLE-IN-ROCK 9150 2.4 2.1 114 3.8 3.4 112 INDIAN CREEK 9425 10.3 9.8 105 9.1 9.5 96 KELLEY R.S. 8180 6.3 6.0 105 8.2 7.8 105 STEEL CREEK PARK 10100 5.4 5.4 100 5.9 6.3 94 ----- ----- Basin wide percent of average 106 101 UPPER BEAR RIVER BUG LAKE 7950 6.6 6.1 108 8.9 7.4 120 HAYDEN FORK 9400 6.0 4.6 130 9.8 8.0 123 KELLEY R.S. 8180 6.3 6.0 105 8.2 7.8 105 LILY LAKE 9050 4.7 4.2 112 7.6 7.1 107 MONTE CRISTO 8960 8.8 8.0 110 10.9 9.6 114 SALT RIVER SUMMIT 7600 4.6 4.1 112 7.0 6.9 101 TRIAL LAKE 9960 9.0 8.0 112 11.9 8.9 134 ----- ----- Basin wide percent of average 112 115 ----------------------------------------------------------------------------- -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.