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: NOVEMBER 20 , 2006 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 2.1 2.7 78 5.6 4.6 122 COTTONWOOD CREEK 7600 4.7 3.1 152 7.6 6.2 123 GRANITE CREEK 6770 2.1 2.2 95 5.2 4.1 127 GRASSY LAKE 7265 4.3 5.1 84 11.2 7.4 151 GROS VENTRE SUMMIT 8750 3.2 2.9 110 4.6 3.4 135 LEWIS LAKE DIVIDE 7850 4.8 5.0 96 10.3 7.5 137 PHILLIPS BENCH 8200 3.4 4.3 79 7.8 5.6 139 SALT RIVER SUMMIT 7600 2.4 1.6 150 4.9 3.9 126 SNAKE RIVER STATION 6920 2.3 2.6 88 8.7 4.9 178 SPRING CREEK DIVIDE 9000 5.3 4.6 115 6.7 5.6 120 THUMB DIVIDE 7980 1.9 2.7 70 4.6 4.2 110 TOGWOTEE PASS 9580 5.3 5.3 100 6.5 5.7 114 TWO OCEAN PLATEAU 9240 5.4 6.3 86 6.6 6.4 103 WILLOW CREEK 8450 5.5 5.4 102 9.2 7.3 126 ----- ----- Basin wide percent of average 98 130 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 3.9 5.4 72 4.7 4.5 104 BLACK BEAR 8170 6.9 6.8 101 10.9 8.0 136 CANYON 8090 2.2 2.2 100 5.1 3.7 138 FISHER CREEK 9100 7.0 6.5 108 10.2 7.5 136 MADISON PLATEAU 7750 3.2 4.2 76 6.8 5.5 124 NORTHEAST ENTRANCE 7350 .8 1.5 53 5.2 3.1 168 PARKER PEAK 9400 4.3 5.1 84 5.8 4.4 132 SYLVAN LAKE 8420 2.8 4.7 60 7.3 5.5 133 THUMB DIVIDE 7980 1.9 2.7 70 4.6 4.2 110 TWO OCEAN PLATEAU 9240 5.4 6.3 86 6.6 6.4 103 WHISKEY CREEK 6800 2.1 2.5 84 6.0 4.6 130 WHITE MILL 8700 4.5 4.7 96 7.5 5.9 127 WOLVERINE 7650 1.4 2.0 70 3.7 3.5 106 ----- ----- Basin wide percent of average 85 126 WIND RIVER BURROUGHS CREEK 8750 2.4 2.7 89 4.5 3.7 122 COLD SPRINGS 9630 1.3 2.4 54 2.4 3.4 71 DEER PARK 9700 3.5 4.0 88 5.3 5.5 96 HOBBS PARK 10100 2.7 4.2 64 3.4 3.7 92 LITTLE WARM 9370 2.1 2.6 81 3.0 3.6 83 SOUTH PASS 9040 3.6 3.7 97 4.9 4.6 107 ST. LAWRENCE ALT 8620 1.6 2.1 76 2.5 2.9 86 TOGWOTEE PASS 9580 5.3 5.3 100 6.5 5.7 114 TOWNSEND CREEK 8700 2.1 2.3 91 4.5 3.7 122 ----- ----- Basin wide percent of average 84 101 BIGHORN BASIN BALD MTN. 9380 6.4 4.9 131 5.3 4.3 123 BEAR TRAP MEADOW 8200 1.7 1.3 131 2.7 2.8 96 BLACKWATER 9780 5.1 5.9 86 5.6 5.6 100 BONE SPRINGS DIV 9350 5.8 4.5 129 4.9 4.1 120 EVENING STAR 9200 4.5 6.2 73 -M 6.3 * GRAVE SPRINGS 8550 2.1 2.2 95 2.5 3.1 81 KIRWIN 9550 2.7 3.4 79 3.8 3.3 115 MARQUETTE 8760 .4 3.1 13 3.0 3.5 86 MIDDLE POWDER 7760 3.0 2.8 107 3.4 4.1 83 OWL CREEK 8975 2.0 1.6 125 2.5 1.8 139 POWDER RIVER PASS 9480 2.8 2.6 108 3.6 3.3 109 SHELL CREEK 9580 5.8 4.3 135 3.9 3.6 108 SYLVAN LAKE 8420 2.8 4.7 60 7.3 5.5 133 SYLVAN ROAD 7120 .6 2.3 26 5.3 5.0 106 TIMBER CREEK 7950 .3 2.0 15 2.7 2.5 108 YOUNTS PEAK 8350 1.8 3.4 53 4.8 4.0 120 ----- ----- Basin wide percent of average 87 108 SHOSHONE RIVER BLACKWATER 9780 5.1 5.9 86 5.6 5.6 100 EVENING STAR 9200 4.5 6.2 73 -M 6.3 * KIRWIN 9550 2.7 3.4 79 3.8 3.3 115 MARQUETTE 8760 .4 3.1 13 3.0 3.5 86 SYLVAN LAKE 8420 2.8 4.7 60 7.3 5.5 133 SYLVAN ROAD 7120 .6 2.3 26 5.3 5.0 106 YOUNTS PEAK 8350 1.8 3.4 53 4.8 4.0 120 ----- ----- Basin wide percent of average 62 111 POWDER-TONGUE BEAR TRAP MEADOW 8200 1.7 1.3 131 2.7 2.8 96 BIG GOOSE 7990 1.5 1.8 83 3.1 2.7 115 BONE SPRINGS DIV 9350 5.8 4.5 129 4.9 4.1 120 BURGESS JUNCTION 7880 2.5 3.0 83 4.3 3.5 123 CLOUD PEAK RESERVOIR 9860 3.1 3.0 103 3.6 4.1 88 DOME LAKE 8880 2.7 3.5 77 3.6 4.1 88 GRAVE SPRINGS 8550 2.1 2.2 95 2.5 3.1 81 HANSEN SAWMILL 8360 .5 1.5 33 1.8 2.7 67 MIDDLE POWDER 7760 3.0 2.8 107 3.4 4.1 83 POWDER RIVER PASS 9480 2.8 2.6 108 3.6 3.3 109 SUCKER CREEK 8880 3.8 2.6 146 4.5 3.8 118 TIE CREEK 6870 .8 1.2 67 4.1 3.3 124 ----- ----- Basin wide percent of average 101 101 BELLE FOURCHE BLIND PARK 6890 1.0 1.7 59 3.1 3.8 82 COLE CANYON 5910 1.4 1.6 87 3.2 -M * NORTH RAPID CREEK 6130 .7 1.2 58 2.6 3.4 76 ----- ----- Basin wide percent of average 69 79 UPPER N. PLATTE RIVER COLUMBINE 9160 3.5 3.4 103 6.4 5.0 128 DIVIDE PEAK 8860 4.7 3.8 124 6.9 5.0 138 ELK RIVER 8700 3.0 2.1 143 5.3 4.1 129 JOE WRIGHT 10120 5.0 5.1 98 6.8 6.2 110 NORTH FRENCH CREEK 10130 6.4 6.1 105 7.3 6.0 122 OLD BATTLE 9920 7.5 6.7 112 9.6 7.2 133 SAGE CREEK BASIN 7850 3.6 2.2 164 5.2 2.9 179 SOUTH BRUSH CREEK 8440 2.5 2.1 119 4.3 4.3 100 TOWER 10500 8.5 9.2 92 10.5 8.2 128 WEBBER SPRINGS 9250 5.0 4.8 104 8.2 6.1 134 WILLOW CREEK PASS 9540 3.7 2.8 132 3.5 3.6 97 ----- ----- Basin wide percent of average 111 126 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10220 4.6 4.5 102 5.6 4.9 114 CASPER MTN. 7850 3.0 3.6 83 4.0 4.2 95 DEADMAN HILL 10220 3.7 4.0 92 4.6 4.3 107 DEER PARK 9700 3.5 4.0 88 5.3 5.5 96 LAPRELE CREEK 8375 2.4 2.4 100 3.2 3.5 91 RENO HILL 8500 3.9 3.3 118 4.9 4.2 117 ROACH 9700 4.8 3.1 155 6.2 4.2 148 SAND LAKE 10050 6.4 7.0 91 6.8 5.7 119 SOUTH PASS 9040 3.6 3.7 97 4.9 4.6 107 WINDY PEAK 7900 1.5 1.7 88 2.7 3.0 90 ----- ----- Basin wide percent of average 100 109 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .6 1.4 43 3.9 3.5 111 DIVIDE PEAK 8860 4.7 3.8 124 6.9 5.0 138 OLD BATTLE 9920 7.5 6.7 112 9.6 7.2 133 SANDSTONE RS 8150 1.1 1.6 69 4.3 4.4 98 WHISKEY PARK 8950 3.8 4.5 84 6.7 6.0 112 ----- ----- Basin wide percent of average 98 120 UPPER GREEN RIVER BIG SANDY OPENING 9080 3.5 2.9 121 4.2 3.4 124 BLIND BULL SUM 8900 5.4 4.9 110 5.7 4.9 116 EAST RIM DIVIDE 7930 1.4 2.2 64 3.4 2.7 126 ELKHART PARK G.S. 9400 2.1 2.5 84 4.1 3.5 117 GROS VENTRE SUMMIT 8750 3.2 2.9 110 4.6 3.4 135 KENDALL R.S. 7740 1.6 2.2 73 4.1 3.2 128 LOOMIS PARK 8240 2.1 3.0 70 4.7 3.8 124 NEW FORK LAKE 8340 1.8 1.9 95 4.0 3.0 133 SNIDER BASIN 8060 2.8 2.4 117 4.4 3.5 126 SPRING CREEK DIVIDE 9000 5.3 4.6 115 6.7 5.6 120 TRIPLE PEAK 8500 4.8 4.2 114 7.4 5.0 148 ----- ----- Basin wide percent of average 101 127 LOWER GREEN RIVER HAMS FORK 7840 2.0 1.6 125 3.6 2.8 129 HEWINTA 9500 .4 1.6 25 4.9 4.0 123 HICKERSON PARK 9100 .4 1.1 36 3.8 2.7 141 HOLE-IN-ROCK 9150 2.0 1.2 167 3.5 2.5 140 INDIAN CREEK 9425 5.3 4.6 115 5.9 5.4 109 KELLEY R.S. 8180 3.3 2.9 114 5.1 4.4 116 STEEL CREEK PARK 10100 3.6 3.1 116 5.0 4.2 119 ----- ----- Basin wide percent of average 106 122 UPPER BEAR RIVER BUG LAKE 7950 3.1 2.9 107 5.4 4.5 120 HAYDEN FORK 9100 2.0 2.2 91 7.5 4.8 156 KELLEY R.S. 8180 3.3 2.9 114 5.1 4.4 116 LILY LAKE 9050 2.8 2.1 133 5.6 4.5 124 MONTE CRISTO 8960 5.4 3.7 146 7.6 5.7 133 SALT RIVER SUMMIT 7600 2.4 1.6 150 4.9 3.9 126 TRIAL LAKE 9960 3.7 4.2 88 7.4 5.3 140 ----- ----- Basin wide percent of average 116 131 ----------------------------------------------------------------------------- -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.