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 3 , 2001 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 2.9 4.4 66 7.3 6.2 118 COTTONWOOD CREEK 7600 3.8 5.0 76 6.7 8.2 82 GRANITE CREEK 6770 3.3 3.7 89 7.3 5.5 133 GRASSY LAKE 7265 5.9 8.1 73 10.0 9.9 101 GROS VENTRE SUMMIT 8775 4.5 4.1 110 4.1 4.3 95 LEWIS LAKE DIVIDE 7860 7.5 8.2 91 10.4 10.1 103 PHILLIPS BENCH 8200 6.8 6.8 100 8.5 7.6 112 SALT RIVER SUMMIT 7600 2.1 2.8 75 4.4 5.2 85 SNAKE RIVER STATION 6920 2.4 4.3 56 6.3 6.6 95 SPRING CREEK DIVIDE 9000 5.0 7.2 69 7.0 7.6 92 THUMB DIVIDE 7980 3.6 4.2 86 6.1 5.5 111 TOGWOTEE PASS 9580 7.1 7.3 97 7.1 7.4 96 TWO OCEAN PLATEAU 9360 8.6 8.6 100 5.7 8.3 69 WILLOW CREEK 8450 4.5 8.1 56 9.9 9.5 104 ----- ----- Basin wide percent of average 82 99 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 6.6 7.3 90 6.2 5.9 105 BLACK BEAR 7950 11.5 10.1 114 13.0 10.8 120 CANYON 7940 3.9 3.4 115 5.2 5.0 104 FISHER CREEK 9100 8.5 9.6 89 9.0 9.2 98 MADISON PLATEAU 7750 6.0 6.5 92 9.4 7.4 127 NORTHEAST ENTRANCE 7350 1.5 2.7 56 3.5 4.2 83 PARKER PEAK 9400 5.6 7.0 80 -M 5.6 * SYLVAN LAKE 8420 5.7 6.7 85 7.7 7.5 103 THUMB DIVIDE 7980 3.6 4.2 86 6.1 5.5 111 TWO OCEAN PLATEAU 9360 8.6 8.6 100 5.7 8.3 69 WHISKEY CREEK 6800 3.8 4.1 93 7.4 6.1 121 WHITE MILL 8700 6.6 6.9 96 6.7 7.5 89 WOLVERINE 7650 1.7 3.2 53 4.2 4.3 98 ----- ----- Basin wide percent of average 92 103 WIND RIVER BURROUGHS CREEK 8750 4.3 4.0 108 4.9 5.1 96 COLD SPRINGS 9630 1.0 3.2 31 1.8 4.0 45 DEER PARK 9700 5.0 4.7 106 5.9 -M * HOBBS PARK 10100 3.0 5.5 55 2.5 4.8 52 LITTLE WARM 9620 2.8 3.5 80 3.5 4.4 80 SOUTH PASS 9040 3.2 5.2 62 4.5 5.6 80 ST. LAWRENCE ALT 8620 .6 2.8 21 1.5 3.4 44 TOGWOTEE PASS 9580 7.1 7.3 97 7.1 7.4 96 TOWNSEND CREEK 8700 1.1 3.1 35 1.6 4.5 36 ----- ----- Basin wide percent of average 72 70 BIGHORN BASIN BALD MTN. 9375 6.1 6.2 98 5.6 5.4 104 BEAR TRAP MEADOW 7900 1.7 1.7 100 3.9 3.5 111 BLACKWATER 9780 6.5 8.1 80 5.6 6.9 81 BONE SPRINGS DIV 9350 5.3 5.5 96 5.2 4.9 106 EVENING STAR 9200 6.7 8.9 75 8.4 8.3 101 GRAVE SPRINGS 8550 1.6 2.8 57 4.1 3.5 117 KIRWIN 9550 3.4 4.3 79 3.7 4.2 88 MARQUETTE 8760 1.5 3.9 38 1.9 3.8 50 MIDDLE POWDER 7760 1.7 3.7 46 4.1 4.7 87 OWL CREEK 8975 1.1 2.0 55 1.5 2.2 68 POWDER RIVER PASS 9480 4.3 3.4 126 5.6 4.0 140 SHELL CREEK 9580 6.3 5.2 121 6.0 4.4 136 SYLVAN LAKE 8420 5.7 6.7 85 7.7 7.5 103 SYLVAN ROAD 8120 2.3 3.7 62 6.2 6.9 90 TIMBER CREEK 7950 .5 2.3 22 1.7 3.3 52 YOUNTS PEAK 8350 4.3 4.9 88 5.5 5.1 108 ----- ----- Basin wide percent of average 80 98 SHOSHONE RIVER BLACKWATER 9780 6.5 8.1 80 5.6 6.9 81 EVENING STAR 9200 6.7 8.9 75 8.4 8.3 101 KIRWIN 9550 3.4 4.3 79 3.7 4.2 88 MARQUETTE 8760 1.5 3.9 38 1.9 3.8 50 SYLVAN LAKE 8420 5.7 6.7 85 7.7 7.5 103 SYLVAN ROAD 8120 2.3 3.7 62 6.2 6.9 90 YOUNTS PEAK 8350 4.3 4.9 88 5.5 5.1 108 ----- ----- Basin wide percent of average 75 91 POWDER-TONGUE BEAR TRAP MEADOW 7900 1.7 1.7 100 3.9 3.5 111 BIG GOOSE 7990 2.6 -M * 4.7 4.1 115 BONE SPRINGS DIV 9350 5.3 5.5 96 5.2 4.9 106 BURGESS JUNCTION 7880 2.4 3.6 67 4.1 4.1 100 CLOUD PEAK RESERVOIR 9860 3.9 3.9 100 5.1 5.1 100 DOME LAKE 8880 3.8 4.2 90 5.6 4.8 117 GRAVE SPRINGS 8550 1.6 2.8 57 4.1 3.5 117 HANSEN SAWMILL 8760 1.4 2.1 67 3.3 3.3 100 MIDDLE POWDER 7760 1.7 3.7 46 4.1 4.7 87 POWDER RIVER PASS 9480 4.3 3.4 126 5.6 4.0 140 SUCKER CREEK 8880 3.4 3.3 103 5.5 4.6 120 TIE CREEK 6870 .8 1.2 67 4.1 3.5 117 ----- ----- Basin wide percent of average 86 110 BELLE FOURCHE BLIND PARK 6890 1.6 2.1 76 3.7 3.7 100 COLE CANYON 5910 .6 -M * 2.0 -M * NORTH RAPID CREEK 6130 2.1 -M * 3.1 3.3 94 ----- ----- Basin wide percent of average 76* 97 UPPER N. PLATTE RIVER COLUMBINE 9400 4.0 5.3 75 5.8 6.5 89 DIVIDE PEAK 8800 4.4 5.4 81 5.4 6.3 86 ELK RIVER 8700 2.9 3.3 88 4.7 5.3 89 JOE WRIGHT 10120 5.9 6.5 91 6.1 7.9 77 NORTH FRENCH CREEK 10100 4.6 8.2 56 4.4 7.6 58 OLD BATTLE 10000 6.5 9.4 69 8.3 9.5 87 SAGE CREEK BASIN 7850 2.9 -M * 5.0 -M * SOUTH BRUSH CREEK 8400 2.1 3.0 70 3.2 5.3 60 TOWER 10500 8.8 13.1 67 9.6 10.9 88 WEBBER SPRINGS 9200 4.8 6.9 70 6.3 7.9 80 WILLOW CREEK PASS 9540 2.1 3.7 57 3.4 4.4 77 ----- ----- Basin wide percent of average 71 80 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 3.4 6.3 54 4.4 6.4 69 CASPER MTN. 7900 3.2 4.8 67 5.2 5.3 98 DEADMAN HILL 10220 2.6 5.2 50 3.7 5.4 69 DEER PARK 9700 5.0 4.7 106 5.9 -M * LAPRELE CREEK 8320 1.3 3.3 39 4.2 4.3 98 RENO HILL 8400 2.8 4.5 62 4.5 5.1 88 ROACH 9700 2.1 4.5 47 3.5 5.4 65 SAND LAKE 10080 5.9 9.6 61 6.1 7.4 82 SOUTH PASS 9040 3.2 5.2 62 4.5 5.6 80 WINDY PEAK 7840 1.1 2.4 46 3.8 3.8 100 ----- ----- Basin wide percent of average 61 82 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 3.0 2.0 150 2.5 4.5 56 DIVIDE PEAK 8800 4.4 5.4 81 5.4 6.3 86 OLD BATTLE 10000 6.5 9.4 69 8.3 9.5 87 SANDSTONE RS 8150 2.6 2.6 100 5.8 5.6 104 WHISKEY PARK 8950 5.4 6.4 84 7.6 7.9 96 ----- ----- Basin wide percent of average 85 88 UPPER GREEN RIVER BIG SANDY OPENING 9100 4.8 4.2 114 4.2 4.3 98 BLIND BULL SUM 8650 6.8 7.5 91 7.1 6.6 108 EAST RIM DIVIDE 7930 1.8 3.4 53 3.7 3.5 106 ELKHART PARK G.S. 9400 3.7 3.7 100 4.2 4.4 95 GROS VENTRE SUMMIT 8775 4.5 4.1 110 4.1 4.3 95 KENDALL R.S. 7740 2.2 3.4 65 4.7 4.2 112 LOOMIS PARK 8240 4.4 4.6 96 5.4 5.0 108 NEW FORK LAKE 8340 2.4 3.0 80 3.5 3.9 90 SNIDER BASIN 8250 1.1 3.8 29 4.3 4.6 93 SPRING CREEK DIVIDE 9000 5.0 7.2 69 7.0 7.6 92 TRIPLE PEAK 8500 6.1 6.7 91 8.0 6.7 119 ----- ----- Basin wide percent of average 83 102 LOWER GREEN RIVER HAMS FORK 7840 2.2 2.7 81 3.0 3.6 83 HEWINTA 9500 -M 2.3 * -M 4.9 * HICKERSON PARK 9150 1.0 1.6 62 3.4 3.3 103 HOLE-IN-ROCK 9150 1.2 1.6 75 3.4 3.0 113 INDIAN CREEK 9425 5.7 7.1 80 5.7 7.1 80 KELLEY R.S. 8180 3.0 4.4 68 5.1 5.9 86 STEEL CREEK PARK 10100 3.2 4.2 76 4.1 5.3 77 ----- ----- Basin wide percent of average 75 88 UPPER BEAR RIVER BUG LAKE 7950 2.1 4.3 49 5.1 5.8 88 HAYDEN FORK 9400 3.7 3.3 112 7.1 6.3 113 KELLEY R.S. 8180 3.0 4.4 68 5.1 5.9 86 LILY LAKE 9050 2.5 3.1 81 5.5 5.8 95 MONTE CRISTO 8960 4.3 5.5 78 6.7 7.4 91 SALT RIVER SUMMIT 7600 2.1 2.8 75 4.4 5.2 85 TRIAL LAKE 9960 5.6 5.9 95 8.3 6.9 120 ----- ----- Basin wide percent of average 80 97 ----------------------------------------------------------------------------- -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.