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 FRIDAY: FEBRUARY 29 , 2008 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 15.0 15.9 94 21.6 18.5 117 COTTONWOOD CREEK 7670 19.6 18.3 107 21.1 22.9 92 GRAND TARGHEE 9260 39.5 -M * 26.9 -M * GRANITE CREEK 6770 14.4 16.0 90 19.8 17.3 114 GRASSY LAKE 7265 26.3 29.3 90 33.8 30.8 110 GROS VENTRE SUMMIT 8750 11.2 11.4 98 12.3 10.7 115 GUNSIGHT PASS 9820 10.4 -M * 12.1 -M * LEWIS LAKE DIVIDE 7850 26.0 29.4 88 30.8 31.3 98 PHILLIPS BENCH 8200 25.7 23.7 108 28.7 24.5 117 SALT RIVER SUMMIT 7760 11.4 12.1 94 13.3 15.7 85 SNAKE RIVER STATION 6920 14.1 16.4 86 22.4 19.4 115 SPRING CREEK DIVIDE 9000 18.9 22.0 86 19.3 22.3 87 THUMB DIVIDE 7980 13.6 15.2 89 16.3 15.9 103 TOGWOTEE PASS 9580 22.2 20.6 108 24.3 20.5 119 TWO OCEAN PLATEAU 9240 29.0 23.2 125 23.4 23.2 101 WILLOW CREEK 8380 25.9 25.2 103 31.5 26.8 118 ----- ----- Basin wide percent of average 98 106 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 21.6 19.7 110 20.1 17.0 118 BLACK BEAR 8170 38.4 32.9 117 34.6 33.1 105 CANYON 7870 14.2 11.3 126 17.7 12.9 137 FISHER CREEK 9100 35.5 29.6 120 32.2 30.4 106 MADISON PLATEAU 7750 24.6 20.8 118 27.6 21.9 126 NORTHEAST ENTRANCE 7350 7.9 9.7 81 11.4 10.7 107 PARKER PEAK 9400 21.5 18.1 119 19.8 13.6 146 SYLVAN LAKE 8420 17.4 18.7 93 22.0 17.8 124 THUMB DIVIDE 7980 13.6 15.2 89 16.3 15.9 103 TWO OCEAN PLATEAU 9240 29.0 23.2 125 23.4 23.2 101 WHISKEY CREEK 6800 15.7 14.4 109 22.0 17.3 127 WHITE MILL 8700 22.9 20.3 113 23.3 22.6 103 WOLVERINE 7650 8.8 10.6 83 11.2 11.1 101 ----- ----- Basin wide percent of average 111 114 WIND RIVER BURROUGHS CREEK 8750 13.1 12.6 104 15.9 13.6 117 COLD SPRINGS 9630 5.4 7.2 75 8.4 8.4 100 DEER PARK 9700 11.6 14.4 81 16.0 17.7 90 HOBBS PARK 10100 10.3 11.9 87 10.9 9.8 111 LITTLE WARM 9370 7.9 9.5 83 11.2 10.8 104 SOUTH PASS 9040 10.8 14.0 77 13.6 14.9 91 ST. LAWRENCE ALT 8620 5.4 5.9 92 6.9 7.0 99 TOGWOTEE PASS 9580 22.2 20.6 108 24.3 20.5 119 TOWNSEND CREEK 8700 6.4 6.9 93 9.5 8.8 108 ----- ----- Basin wide percent of average 90 105 BIGHORN BASIN BALD MTN. 9380 13.4 16.0 84 12.9 14.0 92 BEAR TRAP MEADOW 8200 6.6 4.3 153 6.9 6.4 108 BLACKWATER 9780 20.2 20.4 99 19.0 17.1 111 BONE SPRINGS DIV 9350 13.2 13.2 100 14.4 11.5 125 EVENING STAR 9200 24.6 25.0 98 26.6 21.7 123 GRAVE SPRINGS 8550 7.1 7.3 97 8.1 7.7 105 KIRWIN 9550 10.1 9.1 111 12.2 9.1 134 MARQUETTE 8760 3.6 6.9 52 7.3 7.4 99 MIDDLE POWDER 7760 8.0 9.0 89 7.6 9.6 79 OWL CREEK 8975 4.2 4.1 102 5.5 4.4 125 POWDER RIVER PASS 9480 9.7 8.7 111 11.7 9.9 118 SHELL CREEK 9580 12.9 11.8 109 12.6 10.8 117 SYLVAN LAKE 8420 17.4 18.7 93 22.0 17.8 124 SYLVAN ROAD 7120 9.3 11.4 82 18.1 15.5 117 TIMBER CREEK 7950 2.8 4.2 67 6.3 5.4 117 YOUNTS PEAK 8350 14.0 14.6 96 15.4 13.5 114 ----- ----- Basin wide percent of average 96 114 SHOSHONE RIVER BLACKWATER 9780 20.2 20.4 99 19.0 17.1 111 EVENING STAR 9200 24.6 25.0 98 26.6 21.7 123 KIRWIN 9550 10.1 9.1 111 12.2 9.1 134 MARQUETTE 8760 3.6 6.9 52 7.3 7.4 99 SYLVAN LAKE 8420 17.4 18.7 93 22.0 17.8 124 SYLVAN ROAD 7120 9.3 11.4 82 18.1 15.5 117 YOUNTS PEAK 8350 14.0 14.6 96 15.4 13.5 114 ----- ----- Basin wide percent of average 93 118 POWDER-TONGUE BEAR TRAP MEADOW 8200 6.6 4.3 153 6.9 6.4 108 BIG GOOSE 7990 6.3 7.6 83 9.2 6.8 135 BONE SPRINGS DIV 9350 13.2 13.2 100 14.4 11.5 125 BURGESS JUNCTION 7880 8.8 9.0 98 10.5 9.4 112 CLOUD PEAK RESERVOIR 9860 12.0 10.0 120 12.0 9.7 124 DOME LAKE 8880 8.2 9.5 86 11.5 10.1 114 GRAVE SPRINGS 8550 7.1 7.3 97 8.1 7.7 105 HANSEN SAWMILL 8360 5.1 5.2 98 7.4 6.3 117 MIDDLE POWDER 7760 8.0 9.0 89 7.6 9.6 79 POWDER RIVER PASS 9480 9.7 8.7 111 11.7 9.9 118 SUCKER CREEK 8880 10.3 9.1 113 12.4 10.4 119 TIE CREEK 6870 5.0 4.9 102 8.9 7.8 114 ----- ----- Basin wide percent of average 103 114 BELLE FOURCHE BLIND PARK 6890 6.1 7.1 86 8.9 9.2 97 COLE CANYON 5910 5.0 5.6 89 6.1 5.5 111 NORTH RAPID CREEK 6130 7.1 6.7 106 7.2 7.4 97 ----- ----- Basin wide percent of average 94 100 UPPER N. PLATTE RIVER COLUMBINE 9160 22.2 21.7 102 24.5 20.7 118 DIVIDE PEAK 8880 19.7 15.5 127 20.1 16.9 119 ELK RIVER 8700 21.5 16.0 134 20.7 16.0 129 JOE WRIGHT 10120 19.9 17.1 116 23.2 20.0 116 NORTH FRENCH CREEK 10130 25.3 22.5 112 25.2 20.1 125 OLD BATTLE 10000 27.9 26.1 107 33.0 28.2 117 SAGE CREEK BASIN 7850 14.8 9.0 164 15.9 9.8 162 SOUTH BRUSH CREEK 8440 10.9 9.9 110 14.5 13.2 110 TOWER 10500 -M 37.3 * -M 31.7 * WEBBER SPRINGS 9250 21.6 21.1 102 25.5 21.9 116 WILLOW CREEK PASS 9540 13.2 9.5 139 13.6 10.3 132 ----- ----- Basin wide percent of average 117 122 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 17.5 18.9 93 18.2 17.4 105 CASPER MTN. 7900 9.4 11.2 84 11.1 11.0 101 DEADMAN HILL 10220 14.3 12.9 111 14.8 13.2 112 DEER PARK 9700 11.6 14.4 81 16.0 17.7 90 LAPRELE CREEK 8375 5.8 8.9 65 8.3 10.0 83 RENO HILL 8400 9.6 10.3 93 11.4 11.4 100 ROACH 9700 16.4 13.8 119 19.1 14.7 130 SAND LAKE 10050 22.5 25.0 90 22.6 19.2 118 SOUTH PASS 9040 10.8 14.0 77 13.6 14.9 91 WINDY PEAK 7900 6.5 6.0 108 7.9 8.4 94 ----- ----- Basin wide percent of average 92 104 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 14.1 9.6 147 14.5 12.2 119 DIVIDE PEAK 8880 19.7 15.5 127 20.1 16.9 119 OLD BATTLE 10000 27.9 26.1 107 33.0 28.2 117 SANDSTONE RS 8150 15.0 12.4 121 18.6 15.5 120 WHISKEY PARK 8950 26.8 23.6 114 29.9 23.3 128 ----- ----- Basin wide percent of average 119 121 UPPER GREEN RIVER BIG SANDY OPENING 9080 10.8 12.0 90 10.9 11.3 96 BLIND BULL SUM 8650 20.2 22.9 88 15.4 18.9 81 EAST RIM DIVIDE 7930 7.3 11.0 66 9.5 10.2 93 ELKHART PARK G.S. 9400 9.4 11.0 85 10.2 10.9 94 GROS VENTRE SUMMIT 8750 11.2 11.4 98 12.3 10.7 115 GUNSIGHT PASS 9820 10.4 -M * 12.1 -M * KENDALL R.S. 7740 9.7 12.3 79 11.6 12.4 94 LOOMIS PARK 8240 13.1 14.4 91 14.9 14.7 101 NEW FORK LAKE 8340 8.0 9.6 83 8.2 9.6 85 SNIDER BASIN 8060 11.0 12.4 89 12.1 13.6 89 SPRING CREEK DIVIDE 9000 18.9 22.0 86 19.3 22.3 87 TRIPLE PEAK 8500 19.9 20.7 96 23.0 20.6 112 ----- ----- Basin wide percent of average 87 95 LOWER GREEN RIVER HAMS FORK 7840 9.8 10.9 90 8.5 10.3 83 HEWINTA 9519 10.8 9.0 120 14.1 11.5 123 HICKERSON PARK 9145 6.1 5.8 105 8.4 6.2 135 HOLE-IN-ROCK 9150 5.1 5.7 89 8.4 5.7 147 INDIAN CREEK 9425 19.2 22.1 87 -M 21.0 * KELLEY R.S. 8180 12.0 13.9 86 14.5 17.1 85 STEEL CREEK PARK 10200 12.3 12.5 98 15.7 12.8 123 ----- ----- Basin wide percent of average 94 109 UPPER BEAR RIVER BUG LAKE 7950 15.3 17.0 90 14.8 16.0 92 HAYDEN FORK 9212 16.3 13.0 125 20.1 17.0 118 KELLEY R.S. 8180 12.0 13.9 86 14.5 17.1 85 LILY LAKE 9156 12.4 10.7 116 15.0 14.2 106 MONTE CRISTO 8960 24.4 24.5 100 23.2 21.0 110 SALT RIVER SUMMIT 7760 11.4 12.1 94 13.3 15.7 85 TRIAL LAKE 9992 17.8 20.5 87 21.2 20.4 104 ----- ----- Basin wide percent of average 98 101 ----------------------------------------------------------------------------- -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.