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: FEBRUARY 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 17.3 15.0 115 21.6 17.4 124 COTTONWOOD CREEK 7600 23.6 16.9 140 25.8 21.6 119 GRANITE CREEK 6770 17.9 14.9 120 20.1 16.2 124 GRASSY LAKE 7265 30.2 27.4 110 33.9 29.1 116 GROS VENTRE SUMMIT 8750 9.6 10.8 89 10.6 10.1 105 LEWIS LAKE DIVIDE 7850 33.2 27.6 120 32.7 29.4 111 PHILLIPS BENCH 8200 25.9 22.1 117 27.1 23.0 118 SALT RIVER SUMMIT 7600 13.0 11.3 115 15.9 14.8 107 SNAKE RIVER STATION 6920 16.9 15.3 110 21.8 18.2 120 SPRING CREEK DIVIDE 9000 26.2 20.6 127 -M 21.1 * THUMB DIVIDE 7980 14.2 14.2 100 14.9 14.9 100 TOGWOTEE PASS 9580 20.0 19.5 103 20.9 19.4 108 TWO OCEAN PLATEAU 9240 29.3 21.9 134 23.3 21.8 107 WILLOW CREEK 8450 28.2 23.7 119 32.4 25.3 128 ----- ----- Basin wide percent of average 117 115 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 17.6 18.7 94 15.5 16.1 96 BLACK BEAR 8170 39.7 30.5 130 -M 31.0 * CANYON 8090 11.8 10.5 112 14.4 12.3 117 FISHER CREEK 9100 32.2 27.7 116 29.9 28.7 104 MADISON PLATEAU 7750 21.3 19.4 110 24.8 20.6 120 NORTHEAST ENTRANCE 7350 8.2 9.1 90 10.3 10.2 101 PARKER PEAK 9400 15.1 17.0 89 13.9 12.9 108 SYLVAN LAKE 8420 13.9 17.4 80 17.5 16.9 104 THUMB DIVIDE 7980 14.2 14.2 100 14.9 14.9 100 TWO OCEAN PLATEAU 9240 29.3 21.9 134 23.3 21.8 107 WHISKEY CREEK 6800 12.6 13.3 95 18.8 16.2 116 WHITE MILL 8700 20.6 18.9 109 18.1 21.3 85 WOLVERINE 7650 8.8 10.0 88 7.9 10.6 75 ----- ----- Basin wide percent of average 107 103 WIND RIVER BURROUGHS CREEK 8750 11.4 11.8 97 13.7 12.9 106 COLD SPRINGS 9630 3.9 6.7 58 6.6 8.0 82 DEER PARK 9700 13.6 13.9 98 16.7 16.7 100 HOBBS PARK 10100 8.0 11.1 72 8.6 9.4 91 LITTLE WARM 9370 6.9 8.9 78 9.6 10.3 93 SOUTH PASS 9040 13.0 13.0 100 14.2 14.1 101 ST. LAWRENCE ALT 8620 2.3 5.5 42 4.9 6.6 74 TOGWOTEE PASS 9580 20.0 19.5 103 20.9 19.4 108 TOWNSEND CREEK 8700 4.8 6.5 74 7.8 8.4 93 ----- ----- Basin wide percent of average 87 97 BIGHORN BASIN BALD MTN. 9380 11.9 15.0 79 9.2 13.4 69 BEAR TRAP MEADOW 8200 4.5 4.0 112 6.3 6.1 103 BLACKWATER 9780 17.7 19.1 93 16.1 16.2 99 BONE SPRINGS DIV 9350 -M 12.2 * -M 11.0 * EVENING STAR 9200 20.1 23.3 86 22.5 20.4 110 GRAVE SPRINGS 8550 7.6 6.8 112 9.7 7.3 133 KIRWIN 9550 8.0 8.6 93 8.6 8.7 99 MARQUETTE 8760 -M 6.5 * 6.0 7.1 85 MIDDLE POWDER 7760 10.2 8.4 121 8.8 9.2 96 OWL CREEK 8975 2.3 3.8 61 4.2 4.2 100 POWDER RIVER PASS 9480 7.7 8.2 94 9.2 9.5 97 SHELL CREEK 9580 10.2 11.1 92 9.6 10.3 93 SYLVAN LAKE 8420 13.9 17.4 80 17.5 16.9 104 SYLVAN ROAD 7120 8.8 10.6 83 13.7 14.9 92 TIMBER CREEK 7950 1.5 4.0 38 4.1 5.1 80 YOUNTS PEAK 8350 -M 13.7 * 14.0 12.9 109 ----- ----- Basin wide percent of average 89 98 SHOSHONE RIVER BLACKWATER 9780 17.7 19.1 93 16.1 16.2 99 EVENING STAR 9200 20.1 23.3 86 22.5 20.4 110 KIRWIN 9550 8.0 8.6 93 8.6 8.7 99 MARQUETTE 8760 -M 6.5 * 6.0 7.1 85 SYLVAN LAKE 8420 13.9 17.4 80 17.5 16.9 104 SYLVAN ROAD 7120 8.8 10.6 83 13.7 14.9 92 YOUNTS PEAK 8350 -M 13.7 * 14.0 12.9 109 ----- ----- Basin wide percent of average 87 101 POWDER-TONGUE BEAR TRAP MEADOW 8200 4.5 4.0 112 6.3 6.1 103 BIG GOOSE 7990 4.7 7.1 66 6.9 6.4 108 BONE SPRINGS DIV 9350 -M 12.2 * -M 11.0 * BURGESS JUNCTION 7880 7.4 8.4 88 8.8 9.0 98 CLOUD PEAK RESERVOIR 9860 10.0 9.3 108 9.1 9.3 98 DOME LAKE 8880 7.7 9.0 86 8.6 9.7 89 GRAVE SPRINGS 8550 7.6 6.8 112 9.7 7.3 133 HANSEN SAWMILL 8360 2.9 4.8 60 4.9 6.0 82 MIDDLE POWDER 7760 10.2 8.4 121 8.8 9.2 96 POWDER RIVER PASS 9480 7.7 8.2 94 9.2 9.5 97 SUCKER CREEK 8880 8.0 8.5 94 10.6 10.0 106 TIE CREEK 6870 4.1 4.6 89 8.1 7.5 108 ----- ----- Basin wide percent of average 95 101 BELLE FOURCHE BLIND PARK 6890 6.3 6.3 100 8.9 8.8 101 COLE CANYON 5910 4.0 4.7 85 7.3 -M * NORTH RAPID CREEK 6130 5.5 6.2 89 6.9 7.1 97 ----- ----- Basin wide percent of average 92 99 UPPER N. PLATTE RIVER COLUMBINE 9160 26.5 20.2 131 28.0 19.5 144 DIVIDE PEAK 8860 14.2 14.6 97 17.1 15.9 108 ELK RIVER 8700 16.3 14.9 109 17.0 15.0 113 JOE WRIGHT 10120 18.0 16.1 112 21.4 18.9 113 NORTH FRENCH CREEK 10130 27.9 21.2 132 26.6 19.0 140 OLD BATTLE 9920 30.2 24.2 125 33.4 26.5 126 SAGE CREEK BASIN 7850 10.1 8.5 119 12.0 9.3 129 SOUTH BRUSH CREEK 8440 9.9 9.1 109 13.8 12.5 110 TOWER 10500 43.4 35.2 123 31.0 29.8 104 WEBBER SPRINGS 9250 21.7 19.4 112 27.2 20.8 131 WILLOW CREEK PASS 9540 10.4 8.9 117 11.1 9.7 114 ----- ----- Basin wide percent of average 119 121 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10220 20.0 17.8 112 16.7 16.5 101 CASPER MTN. 7850 13.6 10.5 130 14.6 10.4 140 DEADMAN HILL 10220 12.7 12.2 104 14.1 12.4 114 DEER PARK 9700 13.6 13.9 98 16.7 16.7 100 LAPRELE CREEK 8375 8.1 8.3 98 8.9 9.4 95 RENO HILL 8500 12.9 9.7 133 14.2 10.8 131 ROACH 9700 12.1 13.0 93 14.8 13.9 106 SAND LAKE 10050 25.8 23.3 111 24.7 18.2 136 SOUTH PASS 9040 13.0 13.0 100 14.2 14.1 101 WINDY PEAK 7900 5.5 5.5 100 7.6 8.0 95 ----- ----- Basin wide percent of average 108 112 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 10.7 9.1 118 13.3 11.5 116 DIVIDE PEAK 8860 14.2 14.6 97 17.1 15.9 108 OLD BATTLE 9920 30.2 24.2 125 33.4 26.5 126 SANDSTONE RS 8150 12.3 11.6 106 17.8 14.7 121 WHISKEY PARK 8950 30.5 22.1 138 29.5 22.1 133 ----- ----- Basin wide percent of average 120 122 UPPER GREEN RIVER BIG SANDY OPENING 9080 12.1 11.3 107 12.3 10.6 116 BLIND BULL SUM 8900 23.2 21.5 108 17.9 17.9 100 EAST RIM DIVIDE 7930 9.1 10.2 89 9.7 9.5 102 ELKHART PARK G.S. 9400 11.2 10.3 109 12.1 10.3 117 GROS VENTRE SUMMIT 8750 9.6 10.8 89 10.6 10.1 105 KENDALL R.S. 7740 11.8 11.5 103 12.9 11.6 111 LOOMIS PARK 8240 15.4 13.3 116 16.1 13.8 117 NEW FORK LAKE 8340 8.9 9.0 99 8.7 9.1 96 SNIDER BASIN 8060 14.9 11.6 128 14.2 12.9 110 SPRING CREEK DIVIDE 9000 26.2 20.6 127 -M 21.1 * TRIPLE PEAK 8500 25.1 19.4 129 25.6 19.3 133 ----- ----- Basin wide percent of average 112 112 LOWER GREEN RIVER HAMS FORK 7840 12.4 10.1 123 11.8 9.8 120 HEWINTA 9500 9.3 8.3 112 12.3 10.9 113 HICKERSON PARK 9100 2.7 5.3 51 5.4 5.9 92 HOLE-IN-ROCK 9150 5.3 5.2 102 6.3 5.5 115 INDIAN CREEK 9425 25.6 20.6 124 -M 19.7 * KELLEY R.S. 8180 16.7 12.8 130 18.4 16.1 114 STEEL CREEK PARK 10100 12.4 11.5 108 13.7 12.0 114 ----- ----- Basin wide percent of average 114 113 UPPER BEAR RIVER BUG LAKE 7950 20.4 15.8 129 17.8 15.1 118 HAYDEN FORK 9100 16.7 12.0 139 19.7 16.0 123 KELLEY R.S. 8180 16.7 12.8 130 18.4 16.1 114 LILY LAKE 9050 11.6 10.0 116 13.2 13.4 99 MONTE CRISTO 8960 26.0 22.6 115 24.9 19.7 126 SALT RIVER SUMMIT 7600 13.0 11.3 115 15.9 14.8 107 TRIAL LAKE 9960 23.5 18.9 124 23.0 19.0 121 ----- ----- Basin wide percent of average 124 116 ----------------------------------------------------------------------------- -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.