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 27 , 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 15.7 96 21.6 18.2 119 COTTONWOOD CREEK 7670 19.7 17.9 110 21.1 22.5 94 GRAND TARGHEE 9260 39.5 -M * 26.9 -M * GRANITE CREEK 6770 14.4 15.7 92 19.7 17.1 115 GRASSY LAKE 7265 26.2 28.9 91 33.7 30.4 111 GROS VENTRE SUMMIT 8750 11.1 11.2 99 12.2 10.5 116 GUNSIGHT PASS 9820 10.4 -M * 12.0 -M * LEWIS LAKE DIVIDE 7850 26.1 29.0 90 30.7 30.8 100 PHILLIPS BENCH 8200 25.6 23.4 109 28.6 24.1 119 SALT RIVER SUMMIT 7760 11.3 11.9 95 13.3 15.5 86 SNAKE RIVER STATION 6920 14.2 16.2 88 22.3 19.1 117 SPRING CREEK DIVIDE 9000 18.9 21.7 87 19.3 22.1 87 THUMB DIVIDE 7980 13.5 15.0 90 16.2 15.7 103 TOGWOTEE PASS 9580 22.1 20.3 109 24.3 20.3 120 TWO OCEAN PLATEAU 9240 29.0 22.9 127 23.3 22.9 102 WILLOW CREEK 8380 25.9 24.9 104 31.5 26.5 119 ----- ----- Basin wide percent of average 99 107 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 21.3 19.5 109 20.0 16.8 119 BLACK BEAR 8170 38.3 32.4 118 34.6 32.5 106 CANYON 7870 14.2 11.2 127 17.6 12.8 138 FISHER CREEK 9100 35.0 29.1 120 31.9 30.0 106 MADISON PLATEAU 7750 24.5 20.4 120 27.5 21.6 127 NORTHEAST ENTRANCE 7350 7.8 9.6 81 11.2 10.6 106 PARKER PEAK 9400 21.2 18.0 118 19.7 13.4 147 SYLVAN LAKE 8420 17.2 18.6 92 21.8 17.6 124 THUMB DIVIDE 7980 13.5 15.0 90 16.2 15.7 103 TWO OCEAN PLATEAU 9240 29.0 22.9 127 23.3 22.9 102 WHISKEY CREEK 6800 15.7 14.1 111 22.0 17.0 129 WHITE MILL 8700 22.6 19.9 114 23.1 22.2 104 WOLVERINE 7650 8.7 10.5 83 11.1 11.0 101 ----- ----- Basin wide percent of average 112 115 WIND RIVER BURROUGHS CREEK 8750 13.0 12.6 103 15.8 13.4 118 COLD SPRINGS 9630 5.4 7.2 75 8.4 8.3 101 DEER PARK 9700 11.6 14.5 80 16.1 17.5 92 HOBBS PARK 10100 10.3 11.8 87 10.9 9.7 112 LITTLE WARM 9370 7.9 9.4 84 11.2 10.7 105 SOUTH PASS 9040 10.8 13.9 78 13.6 14.7 93 ST. LAWRENCE ALT 8620 5.2 5.9 88 6.8 6.9 99 TOGWOTEE PASS 9580 22.1 20.3 109 24.3 20.3 120 TOWNSEND CREEK 8700 6.4 6.9 93 9.5 8.7 109 ----- ----- Basin wide percent of average 90 106 BIGHORN BASIN BALD MTN. 9380 13.0 15.8 82 12.6 13.9 91 BEAR TRAP MEADOW 8200 6.4 4.3 149 6.8 6.3 108 BLACKWATER 9780 20.1 20.2 100 18.9 16.9 112 BONE SPRINGS DIV 9350 12.9 13.0 99 14.2 11.4 125 EVENING STAR 9200 24.4 24.7 99 26.6 21.4 124 GRAVE SPRINGS 8550 7.0 7.2 97 8.0 7.6 105 KIRWIN 9550 10.1 9.1 111 12.1 9.0 134 MARQUETTE 8760 3.6 6.8 53 7.4 7.3 101 MIDDLE POWDER 7760 7.8 8.9 88 7.4 9.4 79 OWL CREEK 8975 4.2 4.1 102 5.5 4.3 128 POWDER RIVER PASS 9480 9.3 8.7 107 11.2 9.8 114 SHELL CREEK 9580 12.6 11.7 108 12.3 10.6 116 SYLVAN LAKE 8420 17.2 18.6 92 21.8 17.6 124 SYLVAN ROAD 7120 9.3 11.3 82 18.0 15.4 117 TIMBER CREEK 7950 2.8 4.2 67 6.3 5.3 119 YOUNTS PEAK 8350 14.0 14.5 97 15.2 13.4 113 ----- ----- Basin wide percent of average 95 114 SHOSHONE RIVER BLACKWATER 9780 20.1 20.2 100 18.9 16.9 112 EVENING STAR 9200 24.4 24.7 99 26.6 21.4 124 KIRWIN 9550 10.1 9.1 111 12.1 9.0 134 MARQUETTE 8760 3.6 6.8 53 7.4 7.3 101 SYLVAN LAKE 8420 17.2 18.6 92 21.8 17.6 124 SYLVAN ROAD 7120 9.3 11.3 82 18.0 15.4 117 YOUNTS PEAK 8350 14.0 14.5 97 15.2 13.4 113 ----- ----- Basin wide percent of average 94 119 POWDER-TONGUE BEAR TRAP MEADOW 8200 6.4 4.3 149 6.8 6.3 108 BIG GOOSE 7990 6.1 7.5 81 9.1 6.7 136 BONE SPRINGS DIV 9350 12.9 13.0 99 14.2 11.4 125 BURGESS JUNCTION 7880 8.6 8.9 97 10.3 9.3 111 CLOUD PEAK RESERVOIR 9860 11.7 9.9 118 11.8 9.6 123 DOME LAKE 8880 8.0 9.5 84 11.5 10.0 115 GRAVE SPRINGS 8550 7.0 7.2 97 8.0 7.6 105 HANSEN SAWMILL 8360 5.0 5.1 98 7.3 6.2 118 MIDDLE POWDER 7760 7.8 8.9 88 7.4 9.4 79 POWDER RIVER PASS 9480 9.3 8.7 107 11.2 9.8 114 SUCKER CREEK 8880 10.1 9.0 112 12.1 10.3 117 TIE CREEK 6870 4.9 4.9 100 8.8 7.8 113 ----- ----- Basin wide percent of average 101 114 BELLE FOURCHE BLIND PARK 6890 5.8 7.0 83 8.7 9.1 96 COLE CANYON 5910 4.8 5.6 86 6.0 5.4 111 NORTH RAPID CREEK 6130 6.9 6.6 105 7.0 7.3 96 ----- ----- Basin wide percent of average 91 100 UPPER N. PLATTE RIVER COLUMBINE 9160 22.1 21.4 103 24.3 20.4 119 DIVIDE PEAK 8880 19.8 15.3 129 20.1 16.7 120 ELK RIVER 8700 21.5 15.7 137 20.5 15.7 131 JOE WRIGHT 10120 19.8 16.9 117 23.4 19.7 119 NORTH FRENCH CREEK 10130 25.4 22.1 115 25.1 19.8 127 OLD BATTLE 10000 28.0 25.6 109 32.6 27.8 117 SAGE CREEK BASIN 7850 14.8 8.9 166 15.8 9.7 163 SOUTH BRUSH CREEK 8440 10.9 9.7 112 14.3 13.1 109 TOWER 10500 -M 36.8 * -M 31.3 * WEBBER SPRINGS 9250 21.8 20.7 105 25.4 21.6 118 WILLOW CREEK PASS 9540 13.2 9.4 140 13.5 10.1 134 ----- ----- Basin wide percent of average 119 123 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 17.4 18.6 94 18.1 17.1 106 CASPER MTN. 7900 9.2 11.1 83 11.0 10.8 102 DEADMAN HILL 10220 14.2 12.7 112 14.8 13.0 114 DEER PARK 9700 11.6 14.5 80 16.1 17.5 92 LAPRELE CREEK 8375 5.6 8.7 64 8.3 9.8 85 RENO HILL 8400 9.5 10.1 94 11.1 11.3 98 ROACH 9700 16.4 13.6 121 18.9 14.5 130 SAND LAKE 10050 22.5 24.5 92 22.5 18.9 119 SOUTH PASS 9040 10.8 13.9 78 13.6 14.7 93 WINDY PEAK 7900 6.5 5.8 112 7.8 8.3 94 ----- ----- Basin wide percent of average 93 105 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 13.9 9.4 148 14.5 12.1 120 DIVIDE PEAK 8880 19.8 15.3 129 20.1 16.7 120 OLD BATTLE 10000 28.0 25.6 109 32.6 27.8 117 SANDSTONE RS 8150 15.0 12.2 123 18.6 15.3 122 WHISKEY PARK 8950 26.8 23.2 116 29.4 23.0 128 ----- ----- Basin wide percent of average 121 121 UPPER GREEN RIVER BIG SANDY OPENING 9080 10.7 11.9 90 10.8 11.1 97 BLIND BULL SUM 8650 20.2 22.5 90 15.3 18.7 82 EAST RIM DIVIDE 7930 7.3 10.8 68 9.7 10.0 97 ELKHART PARK G.S. 9400 9.4 10.9 86 10.1 10.7 94 GROS VENTRE SUMMIT 8750 11.1 11.2 99 12.2 10.5 116 GUNSIGHT PASS 9820 10.4 -M * 12.0 -M * KENDALL R.S. 7740 9.6 12.1 79 11.5 12.2 94 LOOMIS PARK 8240 13.1 14.1 93 14.8 14.5 102 NEW FORK LAKE 8340 8.0 9.4 85 8.1 9.4 86 SNIDER BASIN 8060 10.9 12.2 89 12.0 13.5 89 SPRING CREEK DIVIDE 9000 18.9 21.7 87 19.3 22.1 87 TRIPLE PEAK 8500 19.8 20.4 97 22.9 20.2 113 ----- ----- Basin wide percent of average 88 96 LOWER GREEN RIVER HAMS FORK 7840 9.9 10.7 93 8.4 10.2 82 HEWINTA 9519 10.5 8.8 119 14.1 11.4 124 HICKERSON PARK 9145 6.0 5.7 105 8.2 6.1 134 HOLE-IN-ROCK 9150 5.1 5.6 91 8.4 5.7 147 INDIAN CREEK 9425 19.1 21.7 88 -M 20.7 * KELLEY R.S. 8180 11.9 13.6 88 14.5 16.9 86 STEEL CREEK PARK 10200 12.2 12.3 99 15.7 12.6 125 ----- ----- Basin wide percent of average 95 110 UPPER BEAR RIVER BUG LAKE 7950 15.4 16.7 92 14.8 15.8 94 HAYDEN FORK 9212 16.3 12.8 127 20.1 16.7 120 KELLEY R.S. 8180 11.9 13.6 88 14.5 16.9 86 LILY LAKE 9156 12.4 10.6 117 15.0 14.0 107 MONTE CRISTO 8960 24.3 24.1 101 23.1 20.7 112 SALT RIVER SUMMIT 7760 11.3 11.9 95 13.3 15.5 86 TRIAL LAKE 9992 17.8 20.1 89 21.2 20.0 106 ----- ----- Basin wide percent of average 100 102 ----------------------------------------------------------------------------- -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.