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 18 , 2008 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 14.5 14.7 99 21.1 17.0 124 COTTONWOOD CREEK 7670 18.4 16.5 112 20.3 21.1 96 GRAND TARGHEE 9260 37.5 -M * 25.6 -M * GRANITE CREEK 6770 13.7 14.6 94 19.1 15.9 120 GRASSY LAKE 7265 24.7 26.9 92 32.4 28.5 114 GROS VENTRE SUMMIT 8750 10.8 10.6 102 12.0 9.8 122 GUNSIGHT PASS 9820 10.2 -M * 11.7 -M * LEWIS LAKE DIVIDE 7850 24.9 27.0 92 29.9 28.7 104 PHILLIPS BENCH 8200 24.1 21.7 111 27.3 22.5 121 SALT RIVER SUMMIT 7760 10.5 11.1 95 12.5 14.5 86 SNAKE RIVER STATION 6920 13.4 15.0 89 21.6 17.9 121 SPRING CREEK DIVIDE 9000 17.9 20.2 89 18.2 20.7 88 THUMB DIVIDE 7980 13.0 13.8 94 15.6 14.6 107 TOGWOTEE PASS 9580 21.5 19.2 112 23.5 19.0 124 TWO OCEAN PLATEAU 9240 28.3 21.6 131 23.0 21.3 108 WILLOW CREEK 8380 24.0 23.3 103 29.4 24.8 119 ----- ----- Basin wide percent of average 101 111 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 20.6 18.6 111 19.1 15.8 121 BLACK BEAR 8170 37.0 30.1 123 33.5 30.2 111 CANYON 7870 13.8 10.4 133 17.1 12.1 141 FISHER CREEK 9100 34.6 27.3 127 -M 28.0 * MADISON PLATEAU 7750 23.9 19.1 125 26.4 20.1 131 NORTHEAST ENTRANCE 7350 7.4 9.0 82 10.9 10.0 109 PARKER PEAK 9400 20.2 16.8 120 -M 12.6 * SYLVAN LAKE 8420 16.3 17.3 94 20.8 16.6 125 THUMB DIVIDE 7980 13.0 13.8 94 15.6 14.6 107 TWO OCEAN PLATEAU 9240 28.3 21.6 131 23.0 21.3 108 WHISKEY CREEK 6800 15.2 13.1 116 21.2 15.8 134 WHITE MILL 8700 22.0 18.6 118 -M 20.8 * WOLVERINE 7650 8.4 9.9 85 10.7 10.4 103 ----- ----- Basin wide percent of average 116 119 WIND RIVER BURROUGHS CREEK 8750 12.7 11.6 109 15.5 12.7 122 COLD SPRINGS 9630 5.3 6.6 80 8.3 7.8 106 DEER PARK 9700 11.0 13.9 79 15.5 16.5 94 HOBBS PARK 10100 10.0 11.0 91 10.7 9.1 118 LITTLE WARM 9370 7.7 8.8 88 11.0 10.1 109 SOUTH PASS 9040 10.2 13.0 78 13.1 13.9 94 ST. LAWRENCE ALT 8620 5.0 5.4 93 6.6 6.5 102 TOGWOTEE PASS 9580 21.5 19.2 112 23.5 19.0 124 TOWNSEND CREEK 8700 5.9 6.5 91 9.1 8.2 111 ----- ----- Basin wide percent of average 93 109 BIGHORN BASIN BALD MTN. 9380 12.4 14.8 84 11.9 13.1 91 BEAR TRAP MEADOW 8200 6.1 4.0 152 6.6 6.0 110 BLACKWATER 9780 19.7 18.8 105 18.4 15.9 116 BONE SPRINGS DIV 9350 12.6 12.0 105 13.9 10.8 129 EVENING STAR 9200 23.6 23.0 103 -M 20.1 * GRAVE SPRINGS 8550 6.7 6.5 103 7.8 7.1 110 KIRWIN 9550 9.8 8.5 115 11.9 8.5 140 MARQUETTE 8760 3.3 6.4 52 6.9 6.9 100 MIDDLE POWDER 7760 7.4 8.2 90 6.5 9.0 72 OWL CREEK 8975 4.0 3.8 105 5.4 4.1 132 POWDER RIVER PASS 9480 9.0 8.0 112 10.9 9.3 117 SHELL CREEK 9580 12.3 10.9 113 12.1 10.2 119 SYLVAN LAKE 8420 16.3 17.3 94 20.8 16.6 125 SYLVAN ROAD 7120 8.8 10.5 84 17.4 14.7 118 TIMBER CREEK 7950 2.5 4.0 62 6.2 5.0 124 YOUNTS PEAK 8350 13.7 13.6 101 15.0 12.6 119 ----- ----- Basin wide percent of average 99 115 SHOSHONE RIVER BLACKWATER 9780 19.7 18.8 105 18.4 15.9 116 EVENING STAR 9200 23.6 23.0 103 -M 20.1 * KIRWIN 9550 9.8 8.5 115 11.9 8.5 140 MARQUETTE 8760 3.3 6.4 52 6.9 6.9 100 SYLVAN LAKE 8420 16.3 17.3 94 20.8 16.6 125 SYLVAN ROAD 7120 8.8 10.5 84 17.4 14.7 118 YOUNTS PEAK 8350 13.7 13.6 101 15.0 12.6 119 ----- ----- Basin wide percent of average 97 120 POWDER-TONGUE BEAR TRAP MEADOW 8200 6.1 4.0 152 6.6 6.0 110 BIG GOOSE 7990 5.9 7.0 84 8.8 6.3 140 BONE SPRINGS DIV 9350 12.6 12.0 105 13.9 10.8 129 BURGESS JUNCTION 7880 8.4 8.3 101 10.1 8.8 115 CLOUD PEAK RESERVOIR 9860 11.3 9.1 124 11.3 9.1 124 DOME LAKE 8880 7.8 8.9 88 11.1 9.6 116 GRAVE SPRINGS 8550 6.7 6.5 103 7.8 7.1 110 HANSEN SAWMILL 8360 4.9 4.7 104 7.1 5.8 122 MIDDLE POWDER 7760 7.4 8.2 90 6.5 9.0 72 POWDER RIVER PASS 9480 9.0 8.0 112 10.9 9.3 117 SUCKER CREEK 8880 9.7 8.3 117 11.5 9.8 117 TIE CREEK 6870 4.7 4.6 102 8.7 7.4 118 ----- ----- Basin wide percent of average 105 115 BELLE FOURCHE BLIND PARK 6890 5.5 6.2 89 7.9 8.6 92 COLE CANYON 5910 4.7 5.2 90 5.7 5.2 110 NORTH RAPID CREEK 6130 6.1 6.1 100 6.2 7.0 89 ----- ----- Basin wide percent of average 93 95 UPPER N. PLATTE RIVER COLUMBINE 9160 20.6 19.8 104 22.6 19.1 118 DIVIDE PEAK 8880 19.2 14.4 133 19.4 15.5 125 ELK RIVER 8700 20.4 14.6 140 19.5 14.6 134 JOE WRIGHT 10120 18.4 15.9 116 21.6 18.4 117 NORTH FRENCH CREEK 10130 23.7 20.7 114 23.5 18.5 127 OLD BATTLE 10000 26.8 23.6 114 31.3 25.8 121 SAGE CREEK BASIN 7850 14.6 8.4 174 15.5 9.0 172 SOUTH BRUSH CREEK 8440 9.8 8.8 111 13.3 12.3 108 TOWER 10500 34.9 34.6 101 30.3 29.2 104 WEBBER SPRINGS 9250 20.8 19.0 109 24.3 20.3 120 WILLOW CREEK PASS 9540 12.5 8.7 144 12.8 9.5 135 ----- ----- Basin wide percent of average 118 122 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 16.5 17.5 94 17.4 16.0 109 CASPER MTN. 7900 8.8 10.3 85 10.7 10.1 106 DEADMAN HILL 10220 13.4 12.0 112 13.9 12.0 116 DEER PARK 9700 11.0 13.9 79 15.5 16.5 94 LAPRELE CREEK 8375 -M 8.2 * -M 9.1 * RENO HILL 8400 9.1 9.5 96 10.8 10.5 103 ROACH 9700 15.5 12.8 121 18.0 13.3 135 SAND LAKE 10050 21.4 22.8 94 21.4 17.7 121 SOUTH PASS 9040 10.2 13.0 78 13.1 13.9 94 WINDY PEAK 7900 6.1 5.4 113 7.7 7.8 99 ----- ----- Basin wide percent of average 96 109 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 13.0 8.8 148 14.0 11.2 125 DIVIDE PEAK 8880 19.2 14.4 133 19.4 15.5 125 OLD BATTLE 10000 26.8 23.6 114 31.3 25.8 121 SANDSTONE RS 8150 14.3 11.3 127 17.8 14.3 124 WHISKEY PARK 8950 25.2 21.6 117 28.4 21.6 131 ----- ----- Basin wide percent of average 124 125 UPPER GREEN RIVER BIG SANDY OPENING 9080 10.3 11.0 94 10.4 10.3 101 BLIND BULL SUM 8650 19.3 21.0 92 14.8 17.5 85 EAST RIM DIVIDE 7930 7.0 10.0 70 9.2 9.3 99 ELKHART PARK G.S. 9400 9.1 10.1 90 9.8 10.0 98 GROS VENTRE SUMMIT 8750 10.8 10.6 102 12.0 9.8 122 GUNSIGHT PASS 9820 10.2 -M * 11.7 -M * KENDALL R.S. 7740 9.4 11.3 83 11.2 11.3 99 LOOMIS PARK 8240 12.6 13.1 96 14.4 13.5 107 NEW FORK LAKE 8340 7.8 8.8 89 7.9 8.9 89 SNIDER BASIN 8060 10.2 11.4 89 11.3 12.6 90 SPRING CREEK DIVIDE 9000 17.9 20.2 89 18.2 20.7 88 TRIPLE PEAK 8500 18.4 19.1 96 21.6 18.7 116 ----- ----- Basin wide percent of average 91 99 LOWER GREEN RIVER HAMS FORK 7840 9.2 9.9 93 7.9 9.5 83 HEWINTA 9519 9.5 8.1 117 13.4 10.6 126 HICKERSON PARK 9145 5.5 5.3 104 7.8 5.7 137 HOLE-IN-ROCK 9150 4.7 5.1 92 7.9 5.3 149 INDIAN CREEK 9425 17.8 20.2 88 13.3 19.3 69 KELLEY R.S. 8180 -M 12.6 * -M 15.8 * STEEL CREEK PARK 10200 10.9 11.3 96 14.6 11.7 125 ----- ----- Basin wide percent of average 96 105 UPPER BEAR RIVER BUG LAKE 7950 14.2 15.5 92 13.8 14.7 94 HAYDEN FORK 9212 14.3 11.7 122 18.5 15.6 119 KELLEY R.S. 8180 -M 12.6 * -M 15.8 * LILY LAKE 9156 11.3 9.8 115 14.4 13.0 111 MONTE CRISTO 8960 22.4 22.1 101 21.5 19.2 112 SALT RIVER SUMMIT 7760 10.5 11.1 95 12.5 14.5 86 TRIAL LAKE 9992 16.0 18.6 86 19.2 18.5 104 ----- ----- Basin wide percent of average 100 105 ----------------------------------------------------------------------------- -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 1961-90. 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.