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 SUNDAY: FEBRUARY 17 , 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 14.6 99 21.1 16.9 125 COTTONWOOD CREEK 7670 18.4 16.3 113 20.2 21.0 96 GRAND TARGHEE 9260 37.7 -M * 25.7 -M * GRANITE CREEK 6770 13.7 14.5 94 19.1 15.8 121 GRASSY LAKE 7265 24.7 26.7 93 32.2 28.3 114 GROS VENTRE SUMMIT 8750 10.8 10.5 103 11.9 9.7 123 GUNSIGHT PASS 9820 10.3 -M * 11.7 -M * LEWIS LAKE DIVIDE 7850 25.0 26.8 93 29.9 28.4 105 PHILLIPS BENCH 8200 24.1 21.5 112 27.3 22.3 122 SALT RIVER SUMMIT 7760 10.5 11.0 95 12.6 14.3 88 SNAKE RIVER STATION 6920 13.4 14.9 90 21.5 17.8 121 SPRING CREEK DIVIDE 9000 17.9 20.0 89 18.2 20.6 88 THUMB DIVIDE 7980 13.0 13.7 95 15.6 14.5 108 TOGWOTEE PASS 9580 21.5 19.1 113 23.4 18.9 124 TWO OCEAN PLATEAU 9240 28.4 21.4 133 22.9 21.1 109 WILLOW CREEK 8380 24.0 23.1 104 29.3 24.6 119 ----- ----- Basin wide percent of average 102 111 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 20.6 18.4 112 19.1 15.7 122 BLACK BEAR 8170 37.0 29.7 125 33.5 29.9 112 CANYON 7870 13.8 10.3 134 17.0 12.0 142 FISHER CREEK 9100 34.5 27.0 128 -M 27.8 * MADISON PLATEAU 7750 23.9 18.9 126 26.4 20.0 132 NORTHEAST ENTRANCE 7350 7.4 8.9 83 10.9 9.9 110 PARKER PEAK 9400 20.1 16.6 121 -M 12.5 * SYLVAN LAKE 8420 16.3 17.2 95 20.7 16.5 125 THUMB DIVIDE 7980 13.0 13.7 95 15.6 14.5 108 TWO OCEAN PLATEAU 9240 28.4 21.4 133 22.9 21.1 109 WHISKEY CREEK 6800 15.2 13.0 117 21.1 15.7 134 WHITE MILL 8700 21.9 18.5 118 -M 20.7 * WOLVERINE 7650 8.4 9.8 86 10.7 10.3 104 ----- ----- Basin wide percent of average 117 120 WIND RIVER BURROUGHS CREEK 8750 12.8 11.4 112 15.6 12.6 124 COLD SPRINGS 9630 5.3 6.5 82 8.3 7.8 106 DEER PARK 9700 10.8 13.8 78 15.3 16.4 93 HOBBS PARK 10100 9.8 10.9 90 10.6 9.1 116 LITTLE WARM 9370 7.7 8.6 90 11.0 10.1 109 SOUTH PASS 9040 10.0 12.8 78 12.8 13.8 93 ST. LAWRENCE ALT 8620 4.8 5.3 91 6.4 6.4 100 TOGWOTEE PASS 9580 21.5 19.1 113 23.4 18.9 124 TOWNSEND CREEK 8700 5.7 6.4 89 8.8 8.1 109 ----- ----- Basin wide percent of average 93 109 BIGHORN BASIN BALD MTN. 9380 12.3 14.8 83 11.9 13.0 92 BEAR TRAP MEADOW 8200 6.1 3.9 156 6.6 6.0 110 BLACKWATER 9780 19.6 18.6 105 18.3 15.8 116 BONE SPRINGS DIV 9350 12.4 11.9 104 13.8 10.7 129 EVENING STAR 9200 23.5 22.8 103 -M 19.9 * GRAVE SPRINGS 8550 6.6 6.5 102 7.7 7.0 110 KIRWIN 9550 9.7 8.4 115 11.8 8.4 140 MARQUETTE 8760 3.0 6.4 47 6.7 6.9 97 MIDDLE POWDER 7760 7.2 8.1 89 6.4 8.9 72 OWL CREEK 8975 4.0 3.7 108 5.4 4.1 132 POWDER RIVER PASS 9480 9.0 7.9 114 11.0 9.2 120 SHELL CREEK 9580 12.2 10.9 112 12.0 10.2 118 SYLVAN LAKE 8420 16.3 17.2 95 20.7 16.5 125 SYLVAN ROAD 7120 8.8 10.4 85 17.4 14.6 119 TIMBER CREEK 7950 2.5 3.9 64 6.0 5.0 120 YOUNTS PEAK 8350 13.8 13.4 103 14.9 12.6 118 ----- ----- Basin wide percent of average 99 115 SHOSHONE RIVER BLACKWATER 9780 19.6 18.6 105 18.3 15.8 116 EVENING STAR 9200 23.5 22.8 103 -M 19.9 * KIRWIN 9550 9.7 8.4 115 11.8 8.4 140 MARQUETTE 8760 3.0 6.4 47 6.7 6.9 97 SYLVAN LAKE 8420 16.3 17.2 95 20.7 16.5 125 SYLVAN ROAD 7120 8.8 10.4 85 17.4 14.6 119 YOUNTS PEAK 8350 13.8 13.4 103 14.9 12.6 118 ----- ----- Basin wide percent of average 97 120 POWDER-TONGUE BEAR TRAP MEADOW 8200 6.1 3.9 156 6.6 6.0 110 BIG GOOSE 7990 6.0 6.9 87 8.8 6.3 140 BONE SPRINGS DIV 9350 12.4 11.9 104 13.8 10.7 129 BURGESS JUNCTION 7880 8.3 8.2 101 10.0 8.7 115 CLOUD PEAK RESERVOIR 9860 11.1 9.0 123 11.4 9.1 125 DOME LAKE 8880 7.8 8.9 88 11.2 9.5 118 GRAVE SPRINGS 8550 6.6 6.5 102 7.7 7.0 110 HANSEN SAWMILL 8360 4.9 4.7 104 7.1 5.8 122 MIDDLE POWDER 7760 7.2 8.1 89 6.4 8.9 72 POWDER RIVER PASS 9480 9.0 7.9 114 11.0 9.2 120 SUCKER CREEK 8880 9.6 8.2 117 11.5 9.7 119 TIE CREEK 6870 4.7 4.6 102 8.6 7.3 118 ----- ----- Basin wide percent of average 106 116 BELLE FOURCHE BLIND PARK 6890 5.3 6.1 87 7.7 8.6 90 COLE CANYON 5910 4.8 5.2 92 5.8 5.1 114 NORTH RAPID CREEK 6130 6.0 6.0 100 6.3 6.9 91 ----- ----- Basin wide percent of average 93 96 UPPER N. PLATTE RIVER COLUMBINE 9160 20.2 19.6 103 22.2 18.9 117 DIVIDE PEAK 8880 19.1 14.3 134 19.2 15.4 125 ELK RIVER 8700 20.2 14.5 139 19.4 14.5 134 JOE WRIGHT 10120 18.2 15.8 115 21.2 18.3 116 NORTH FRENCH CREEK 10130 23.4 20.6 114 22.7 18.4 123 OLD BATTLE 10000 26.5 23.4 113 31.0 25.5 122 SAGE CREEK BASIN 7850 14.5 8.3 175 15.3 8.9 172 SOUTH BRUSH CREEK 8440 9.6 8.7 110 13.0 12.2 107 TOWER 10500 34.5 34.3 101 30.3 28.9 105 WEBBER SPRINGS 9250 20.6 18.8 110 24.1 20.1 120 WILLOW CREEK PASS 9540 12.3 8.7 141 12.7 9.4 135 ----- ----- Basin wide percent of average 117 121 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 16.5 17.3 95 17.2 15.9 108 CASPER MTN. 7900 8.6 10.3 83 10.6 10.0 106 DEADMAN HILL 10220 13.1 11.9 110 13.5 11.9 113 DEER PARK 9700 10.8 13.8 78 15.3 16.4 93 LAPRELE CREEK 8375 -M 8.1 * -M 9.1 * RENO HILL 8400 8.6 9.4 91 10.4 10.4 100 ROACH 9700 15.3 12.7 120 17.9 13.2 136 SAND LAKE 10050 21.0 22.6 93 21.1 17.6 120 SOUTH PASS 9040 10.0 12.8 78 12.8 13.8 93 WINDY PEAK 7900 6.1 5.4 113 7.6 7.7 99 ----- ----- Basin wide percent of average 95 108 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 13.0 8.8 148 13.9 11.2 124 DIVIDE PEAK 8880 19.1 14.3 134 19.2 15.4 125 OLD BATTLE 10000 26.5 23.4 113 31.0 25.5 122 SANDSTONE RS 8150 14.2 11.2 127 17.7 14.2 125 WHISKEY PARK 8950 25.0 21.4 117 28.3 21.5 132 ----- ----- Basin wide percent of average 124 125 UPPER GREEN RIVER BIG SANDY OPENING 9080 10.4 11.0 95 10.5 10.3 102 BLIND BULL SUM 8650 19.3 20.9 92 14.9 17.4 86 EAST RIM DIVIDE 7930 7.0 9.9 71 9.2 9.2 100 ELKHART PARK G.S. 9400 9.1 10.1 90 10.0 9.9 101 GROS VENTRE SUMMIT 8750 10.8 10.5 103 11.9 9.7 123 GUNSIGHT PASS 9820 10.3 -M * 11.7 -M * KENDALL R.S. 7740 9.4 11.2 84 11.2 11.2 100 LOOMIS PARK 8240 12.7 13.0 98 14.3 13.4 107 NEW FORK LAKE 8340 7.8 8.8 89 8.0 8.8 91 SNIDER BASIN 8060 10.2 11.3 90 11.2 12.5 90 SPRING CREEK DIVIDE 9000 17.9 20.0 89 18.2 20.6 88 TRIPLE PEAK 8500 18.4 18.9 97 21.6 18.6 116 ----- ----- Basin wide percent of average 91 100 LOWER GREEN RIVER HAMS FORK 7840 9.3 9.8 95 7.9 9.5 83 HEWINTA 9519 9.5 8.0 119 13.3 10.5 127 HICKERSON PARK 9145 5.5 5.2 106 7.8 5.7 137 HOLE-IN-ROCK 9150 4.6 5.0 92 7.9 5.3 149 INDIAN CREEK 9425 17.8 20.1 89 13.4 19.1 70 KELLEY R.S. 8180 -M 12.5 * -M 15.7 * STEEL CREEK PARK 10200 10.9 11.2 97 14.5 11.6 125 ----- ----- Basin wide percent of average 97 105 UPPER BEAR RIVER BUG LAKE 7950 14.1 15.4 92 13.8 14.6 95 HAYDEN FORK 9212 14.3 11.6 123 18.4 15.4 119 KELLEY R.S. 8180 -M 12.5 * -M 15.7 * LILY LAKE 9156 11.2 9.7 115 14.4 12.9 112 MONTE CRISTO 8960 22.4 21.8 103 21.5 19.1 113 SALT RIVER SUMMIT 7760 10.5 11.0 95 12.6 14.3 88 TRIAL LAKE 9992 16.0 18.4 87 19.1 18.3 104 ----- ----- Basin wide percent of average 101 105 ----------------------------------------------------------------------------- -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.