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 WEDNESDAY: FEBRUARY 20 , 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 14.9 97 21.2 17.3 123 COTTONWOOD CREEK 7670 18.5 16.8 110 20.3 21.4 95 GRAND TARGHEE 9260 37.7 -M * 25.7 -M * GRANITE CREEK 6770 13.7 14.8 93 19.1 16.1 119 GRASSY LAKE 7265 24.7 27.3 90 32.5 29.0 112 GROS VENTRE SUMMIT 8750 10.9 10.7 102 12.0 10.0 120 GUNSIGHT PASS 9820 10.2 -M * 11.8 -M * LEWIS LAKE DIVIDE 7850 25.1 27.5 91 29.8 29.2 102 PHILLIPS BENCH 8200 24.2 22.1 110 27.4 22.9 120 SALT RIVER SUMMIT 7760 10.6 11.3 94 12.6 14.7 86 SNAKE RIVER STATION 6920 13.4 15.3 88 21.6 18.2 119 SPRING CREEK DIVIDE 9000 18.0 20.5 88 18.3 21.0 87 THUMB DIVIDE 7980 13.0 14.1 92 15.6 14.8 105 TOGWOTEE PASS 9580 21.5 19.4 111 23.6 19.3 122 TWO OCEAN PLATEAU 9240 28.4 21.9 130 23.2 21.6 107 WILLOW CREEK 8380 24.0 23.6 102 29.6 25.1 118 ----- ----- Basin wide percent of average 100 109 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 20.7 18.9 110 19.5 16.0 122 BLACK BEAR 8170 37.1 30.7 121 33.5 30.7 109 CANYON 7870 13.8 10.7 129 17.2 12.2 141 FISHER CREEK 9100 34.6 27.9 124 31.5 28.4 111 MADISON PLATEAU 7750 24.0 19.5 123 26.4 20.5 129 NORTHEAST ENTRANCE 7350 -M 9.2 * -M 10.1 * PARKER PEAK 9400 20.2 17.1 118 18.9 12.8 148 SYLVAN LAKE 8420 16.3 17.7 92 20.9 16.9 124 THUMB DIVIDE 7980 13.0 14.1 92 15.6 14.8 105 TWO OCEAN PLATEAU 9240 28.4 21.9 130 23.2 21.6 107 WHISKEY CREEK 6800 15.1 13.5 112 21.2 16.1 132 WHITE MILL 8700 22.0 19.1 115 22.6 21.2 107 WOLVERINE 7650 8.4 10.1 83 10.9 10.5 104 ----- ----- Basin wide percent of average 115 118 WIND RIVER BURROUGHS CREEK 8750 12.8 11.9 108 15.6 12.9 121 COLD SPRINGS 9630 5.4 6.8 79 8.3 7.9 105 DEER PARK 9700 11.0 13.9 79 15.5 16.7 93 HOBBS PARK 10100 10.0 11.3 88 10.8 9.3 116 LITTLE WARM 9370 7.8 8.9 88 11.1 10.2 109 SOUTH PASS 9040 10.3 13.4 77 13.1 14.1 93 ST. LAWRENCE ALT 8620 5.0 5.5 91 6.6 6.6 100 TOGWOTEE PASS 9580 21.5 19.4 111 23.6 19.3 122 TOWNSEND CREEK 8700 6.1 6.6 92 9.1 8.3 110 ----- ----- Basin wide percent of average 92 108 BIGHORN BASIN BALD MTN. 9380 12.7 15.1 84 12.3 13.3 92 BEAR TRAP MEADOW 8200 6.2 4.1 151 6.8 6.1 111 BLACKWATER 9780 19.7 19.2 103 18.5 16.1 115 BONE SPRINGS DIV 9350 12.7 12.3 103 14.1 10.9 129 EVENING STAR 9200 23.6 23.4 101 26.2 20.4 128 GRAVE SPRINGS 8550 6.8 6.6 103 7.8 7.2 108 KIRWIN 9550 9.9 8.7 114 11.9 8.6 138 MARQUETTE 8760 3.4 6.6 52 7.2 7.0 103 MIDDLE POWDER 7760 7.5 8.3 90 7.0 9.1 77 OWL CREEK 8975 4.1 3.9 105 5.4 4.2 129 POWDER RIVER PASS 9480 9.1 8.2 111 11.1 9.4 118 SHELL CREEK 9580 12.4 11.1 112 12.1 10.3 117 SYLVAN LAKE 8420 16.3 17.7 92 20.9 16.9 124 SYLVAN ROAD 7120 8.8 10.6 83 17.4 14.9 117 TIMBER CREEK 7950 2.6 4.0 65 6.6 5.1 129 YOUNTS PEAK 8350 13.8 13.9 99 15.1 12.8 118 ----- ----- Basin wide percent of average 98 116 SHOSHONE RIVER BLACKWATER 9780 19.7 19.2 103 18.5 16.1 115 EVENING STAR 9200 23.6 23.4 101 26.2 20.4 128 KIRWIN 9550 9.9 8.7 114 11.9 8.6 138 MARQUETTE 8760 3.4 6.6 52 7.2 7.0 103 SYLVAN LAKE 8420 16.3 17.7 92 20.9 16.9 124 SYLVAN ROAD 7120 8.8 10.6 83 17.4 14.9 117 YOUNTS PEAK 8350 13.8 13.9 99 15.1 12.8 118 ----- ----- Basin wide percent of average 95 121 POWDER-TONGUE BEAR TRAP MEADOW 8200 6.2 4.1 151 6.8 6.1 111 BIG GOOSE 7990 6.2 7.1 87 9.0 6.4 141 BONE SPRINGS DIV 9350 12.7 12.3 103 14.1 10.9 129 BURGESS JUNCTION 7880 8.6 8.4 102 10.2 8.9 115 CLOUD PEAK RESERVOIR 9860 11.6 9.3 125 11.7 9.2 127 DOME LAKE 8880 8.0 9.1 88 11.3 9.7 116 GRAVE SPRINGS 8550 6.8 6.6 103 7.8 7.2 108 HANSEN SAWMILL 8360 4.9 4.8 102 7.2 5.9 122 MIDDLE POWDER 7760 7.5 8.3 90 7.0 9.1 77 POWDER RIVER PASS 9480 9.1 8.2 111 11.1 9.4 118 SUCKER CREEK 8880 10.0 8.5 118 11.9 9.9 120 TIE CREEK 6870 4.9 4.6 107 8.8 7.5 117 ----- ----- Basin wide percent of average 106 117 BELLE FOURCHE BLIND PARK 6890 5.6 6.2 90 8.5 8.7 98 COLE CANYON 5910 4.9 5.3 92 5.9 5.2 113 NORTH RAPID CREEK 6130 6.4 6.2 103 6.6 7.0 94 ----- ----- Basin wide percent of average 95 100 UPPER N. PLATTE RIVER COLUMBINE 9160 20.6 20.2 102 22.8 19.4 118 DIVIDE PEAK 8880 19.3 14.6 132 19.5 15.8 123 ELK RIVER 8700 20.3 14.9 136 19.7 14.9 132 JOE WRIGHT 10120 18.5 16.1 115 21.9 18.7 117 NORTH FRENCH CREEK 10130 23.7 21.0 113 23.6 18.8 126 OLD BATTLE 10000 26.9 24.1 112 31.5 26.2 120 SAGE CREEK BASIN 7850 14.6 8.5 172 15.5 9.2 168 SOUTH BRUSH CREEK 8440 9.8 9.0 109 13.4 12.5 107 TOWER 10500 35.1 35.1 100 30.3 29.6 102 WEBBER SPRINGS 9250 20.8 19.4 107 24.4 20.5 119 WILLOW CREEK PASS 9540 12.5 8.9 140 13.0 9.6 135 ----- ----- Basin wide percent of average 116 121 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 16.7 17.7 94 17.5 16.2 108 CASPER MTN. 7900 8.9 10.5 85 10.7 10.3 104 DEADMAN HILL 10220 13.4 12.1 111 13.9 12.2 114 DEER PARK 9700 11.0 13.9 79 15.5 16.7 93 LAPRELE CREEK 8375 -M 8.3 * -M 9.3 * RENO HILL 8400 9.1 9.6 95 11.0 10.6 104 ROACH 9700 15.6 13.0 120 18.2 13.6 134 SAND LAKE 10050 21.5 23.1 93 21.6 18.0 120 SOUTH PASS 9040 10.3 13.4 77 13.1 14.1 93 WINDY PEAK 7900 6.2 5.5 113 7.7 7.9 97 ----- ----- Basin wide percent of average 95 108 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 13.1 8.9 147 14.0 11.4 123 DIVIDE PEAK 8880 19.3 14.6 132 19.5 15.8 123 OLD BATTLE 10000 26.9 24.1 112 31.5 26.2 120 SANDSTONE RS 8150 14.3 11.5 124 17.8 14.5 123 WHISKEY PARK 8950 25.2 21.9 115 28.7 21.9 131 ----- ----- Basin wide percent of average 122 124 UPPER GREEN RIVER BIG SANDY OPENING 9080 10.4 11.2 93 10.6 10.5 101 BLIND BULL SUM 8650 19.5 21.4 91 14.9 17.8 84 EAST RIM DIVIDE 7930 7.1 10.2 70 9.2 9.4 98 ELKHART PARK G.S. 9400 9.2 10.3 89 10.0 10.2 98 GROS VENTRE SUMMIT 8750 10.9 10.7 102 12.0 10.0 120 GUNSIGHT PASS 9820 10.2 -M * 11.8 -M * KENDALL R.S. 7740 9.5 11.4 83 11.3 11.5 98 LOOMIS PARK 8240 12.6 13.3 95 14.5 13.7 106 NEW FORK LAKE 8340 7.8 9.0 87 8.0 9.0 89 SNIDER BASIN 8060 10.2 11.5 89 11.4 12.8 89 SPRING CREEK DIVIDE 9000 18.0 20.5 88 18.3 21.0 87 TRIPLE PEAK 8500 18.4 19.4 95 21.6 19.1 113 ----- ----- Basin wide percent of average 90 98 LOWER GREEN RIVER HAMS FORK 7840 9.2 10.0 92 8.0 9.7 82 HEWINTA 9519 9.7 8.3 117 13.4 10.7 125 HICKERSON PARK 9145 5.3 5.4 98 7.6 5.8 131 HOLE-IN-ROCK 9150 4.6 5.2 88 7.9 5.4 146 INDIAN CREEK 9425 18.1 20.5 88 13.5 19.6 69 KELLEY R.S. 8180 -M 12.8 * -M 16.0 * STEEL CREEK PARK 10200 11.1 11.5 97 14.6 11.9 123 ----- ----- Basin wide percent of average 95 103 UPPER BEAR RIVER BUG LAKE 7950 14.2 15.8 90 13.8 15.0 92 HAYDEN FORK 9212 14.5 12.0 121 18.5 15.8 117 KELLEY R.S. 8180 -M 12.8 * -M 16.0 * LILY LAKE 9156 11.3 9.9 114 14.3 13.2 108 MONTE CRISTO 8960 22.3 22.5 99 21.6 19.5 111 SALT RIVER SUMMIT 7760 10.6 11.3 94 12.6 14.7 86 TRIAL LAKE 9992 16.1 18.9 85 19.4 18.8 103 ----- ----- Basin wide percent of average 98 103 ----------------------------------------------------------------------------- -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.