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 THURSDAY: FEBRUARY 21 , 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 15.1 96 21.2 17.4 122 COTTONWOOD CREEK 7670 18.6 16.9 110 20.3 21.6 94 GRAND TARGHEE 9260 37.6 -M * 25.7 -M * GRANITE CREEK 6770 13.8 15.0 92 19.2 16.3 118 GRASSY LAKE 7265 24.7 27.5 90 32.5 29.2 111 GROS VENTRE SUMMIT 8750 10.9 10.8 101 12.0 10.0 120 GUNSIGHT PASS 9820 10.2 -M * 11.8 -M * LEWIS LAKE DIVIDE 7850 25.1 27.7 91 29.7 29.4 101 PHILLIPS BENCH 8200 24.2 22.3 109 27.4 23.0 119 SALT RIVER SUMMIT 7760 10.7 11.4 94 12.6 14.8 85 SNAKE RIVER STATION 6920 13.4 15.4 87 21.7 18.3 119 SPRING CREEK DIVIDE 9000 18.0 20.7 87 18.4 21.2 87 THUMB DIVIDE 7980 13.0 14.2 92 15.7 14.9 105 TOGWOTEE PASS 9580 21.5 19.6 110 23.6 19.4 122 TWO OCEAN PLATEAU 9240 28.4 22.0 129 23.3 21.8 107 WILLOW CREEK 8380 24.0 23.8 101 29.6 25.3 117 ----- ----- Basin wide percent of average 99 109 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 20.7 18.9 110 19.5 16.1 121 BLACK BEAR 8170 37.1 31.0 120 33.5 31.0 108 CANYON 7870 13.8 10.8 128 17.2 12.3 140 FISHER CREEK 9100 34.5 28.0 123 31.5 28.7 110 MADISON PLATEAU 7750 24.0 19.6 122 26.6 20.6 129 NORTHEAST ENTRANCE 7350 7.3 9.2 79 10.9 10.2 107 PARKER PEAK 9400 20.3 17.2 118 19.0 12.9 147 SYLVAN LAKE 8420 16.3 17.9 91 20.9 17.0 123 THUMB DIVIDE 7980 13.0 14.2 92 15.7 14.9 105 TWO OCEAN PLATEAU 9240 28.4 22.0 129 23.3 21.8 107 WHISKEY CREEK 6800 15.1 13.6 111 21.2 16.2 131 WHITE MILL 8700 22.0 19.2 115 22.6 21.3 106 WOLVERINE 7650 8.4 10.2 82 10.9 10.6 103 ----- ----- Basin wide percent of average 113 117 WIND RIVER BURROUGHS CREEK 8750 12.8 12.0 107 15.6 12.9 121 COLD SPRINGS 9630 5.4 6.9 78 8.3 8.0 104 DEER PARK 9700 11.1 13.9 80 15.5 16.9 92 HOBBS PARK 10100 10.0 11.3 88 10.8 9.3 116 LITTLE WARM 9370 7.8 9.0 87 11.1 10.3 108 SOUTH PASS 9040 10.2 13.4 76 13.0 14.2 92 ST. LAWRENCE ALT 8620 5.0 5.6 89 6.6 6.6 100 TOGWOTEE PASS 9580 21.5 19.6 110 23.6 19.4 122 TOWNSEND CREEK 8700 6.1 6.6 92 9.1 8.4 108 ----- ----- Basin wide percent of average 91 107 BIGHORN BASIN BALD MTN. 9380 12.7 15.2 84 12.3 13.4 92 BEAR TRAP MEADOW 8200 6.2 4.1 151 6.8 6.1 111 BLACKWATER 9780 19.7 19.3 102 18.5 16.3 113 BONE SPRINGS DIV 9350 12.7 12.3 103 14.1 11.0 128 EVENING STAR 9200 23.7 23.6 100 26.2 20.5 128 GRAVE SPRINGS 8550 6.8 6.7 101 7.8 7.2 108 KIRWIN 9550 9.9 8.7 114 11.9 8.7 137 MARQUETTE 8760 3.2 6.6 48 7.2 7.1 101 MIDDLE POWDER 7760 7.4 8.4 88 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 9.5 117 SHELL CREEK 9580 12.4 11.2 111 12.1 10.4 116 SYLVAN LAKE 8420 16.3 17.9 91 20.9 17.0 123 SYLVAN ROAD 7120 8.8 10.7 82 17.4 15.0 116 TIMBER CREEK 7950 2.6 4.0 65 6.6 5.1 129 YOUNTS PEAK 8350 13.8 14.0 99 15.1 12.9 117 ----- ----- Basin wide percent of average 97 116 SHOSHONE RIVER BLACKWATER 9780 19.7 19.3 102 18.5 16.3 113 EVENING STAR 9200 23.7 23.6 100 26.2 20.5 128 KIRWIN 9550 9.9 8.7 114 11.9 8.7 137 MARQUETTE 8760 3.2 6.6 48 7.2 7.1 101 SYLVAN LAKE 8420 16.3 17.9 91 20.9 17.0 123 SYLVAN ROAD 7120 8.8 10.7 82 17.4 15.0 116 YOUNTS PEAK 8350 13.8 14.0 99 15.1 12.9 117 ----- ----- Basin wide percent of average 95 120 POWDER-TONGUE BEAR TRAP MEADOW 8200 6.2 4.1 151 6.8 6.1 111 BIG GOOSE 7990 6.1 7.1 86 9.0 6.4 141 BONE SPRINGS DIV 9350 12.7 12.3 103 14.1 11.0 128 BURGESS JUNCTION 7880 8.6 8.5 101 10.2 9.0 113 CLOUD PEAK RESERVOIR 9860 11.6 9.4 123 11.7 9.3 126 DOME LAKE 8880 8.0 9.1 88 11.3 9.7 116 GRAVE SPRINGS 8550 6.8 6.7 101 7.8 7.2 108 HANSEN SAWMILL 8360 4.9 4.9 100 7.2 5.9 122 MIDDLE POWDER 7760 7.4 8.4 88 7.0 9.1 77 POWDER RIVER PASS 9480 9.1 8.2 111 11.1 9.5 117 SUCKER CREEK 8880 10.0 8.5 118 11.9 9.9 120 TIE CREEK 6870 4.8 4.6 104 8.8 7.5 117 ----- ----- Basin wide percent of average 105 116 BELLE FOURCHE BLIND PARK 6890 5.6 6.3 89 8.5 8.8 97 COLE CANYON 5910 4.9 5.4 91 5.9 5.2 113 NORTH RAPID CREEK 6130 6.4 6.3 102 6.6 7.1 93 ----- ----- Basin wide percent of average 94 100 UPPER N. PLATTE RIVER COLUMBINE 9160 20.6 20.4 101 22.9 19.5 117 DIVIDE PEAK 8880 19.3 14.7 131 19.5 15.9 123 ELK RIVER 8700 20.4 15.0 136 19.8 15.0 132 JOE WRIGHT 10120 18.6 16.2 115 21.9 18.8 116 NORTH FRENCH CREEK 10130 23.8 21.2 112 23.7 18.9 125 OLD BATTLE 10000 26.9 24.3 111 31.8 26.4 120 SAGE CREEK BASIN 7850 14.7 8.5 173 15.5 9.2 168 SOUTH BRUSH CREEK 8440 9.9 9.1 109 13.5 12.6 107 TOWER 10500 35.2 35.3 100 30.3 29.9 101 WEBBER SPRINGS 9250 20.9 19.6 107 24.4 20.7 118 WILLOW CREEK PASS 9540 12.5 9.0 139 12.9 9.7 133 ----- ----- Basin wide percent of average 115 120 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 16.7 17.8 94 17.5 16.4 107 CASPER MTN. 7900 9.0 10.6 85 10.8 10.3 105 DEADMAN HILL 10220 13.5 12.2 111 13.9 12.3 113 DEER PARK 9700 11.1 13.9 80 15.5 16.9 92 LAPRELE CREEK 8375 -M 8.3 * -M 9.3 * RENO HILL 8400 9.2 9.7 95 11.0 10.7 103 ROACH 9700 15.6 13.1 119 18.2 13.7 133 SAND LAKE 10050 21.6 23.3 93 21.7 18.1 120 SOUTH PASS 9040 10.2 13.4 76 13.0 14.2 92 WINDY PEAK 7900 6.2 5.6 111 7.8 7.9 99 ----- ----- Basin wide percent of average 95 107 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 13.3 9.0 148 14.1 11.5 123 DIVIDE PEAK 8880 19.3 14.7 131 19.5 15.9 123 OLD BATTLE 10000 26.9 24.3 111 31.8 26.4 120 SANDSTONE RS 8150 14.3 11.6 123 17.8 14.6 122 WHISKEY PARK 8950 25.3 22.1 114 28.8 22.1 130 ----- ----- Basin wide percent of average 121 124 UPPER GREEN RIVER BIG SANDY OPENING 9080 10.5 11.3 93 10.6 10.6 100 BLIND BULL SUM 8650 19.5 21.5 91 14.9 17.9 83 EAST RIM DIVIDE 7930 7.1 10.3 69 9.2 9.5 97 ELKHART PARK G.S. 9400 9.1 10.4 87 10.0 10.3 97 GROS VENTRE SUMMIT 8750 10.9 10.8 101 12.0 10.0 120 GUNSIGHT PASS 9820 10.2 -M * 11.8 -M * KENDALL R.S. 7740 9.5 11.5 83 11.3 11.6 97 LOOMIS PARK 8240 12.7 13.4 95 14.5 13.9 104 NEW FORK LAKE 8340 7.8 9.0 87 8.1 9.1 89 SNIDER BASIN 8060 10.2 11.6 88 11.4 12.9 88 SPRING CREEK DIVIDE 9000 18.0 20.7 87 18.4 21.2 87 TRIPLE PEAK 8500 18.5 19.5 95 21.6 19.2 113 ----- ----- Basin wide percent of average 89 97 LOWER GREEN RIVER HAMS FORK 7840 9.3 10.1 92 8.0 9.8 82 HEWINTA 9519 9.8 8.3 118 13.5 10.8 125 HICKERSON PARK 9145 5.6 5.4 104 7.8 5.9 132 HOLE-IN-ROCK 9150 4.7 5.2 90 7.9 5.4 146 INDIAN CREEK 9425 18.1 20.7 87 13.6 19.7 69 KELLEY R.S. 8180 11.3 12.9 88 13.8 16.2 85 STEEL CREEK PARK 10200 11.2 11.6 97 14.7 12.0 122 ----- ----- Basin wide percent of average 94 99 UPPER BEAR RIVER BUG LAKE 7950 14.2 15.9 89 13.8 15.1 91 HAYDEN FORK 9212 14.6 12.1 121 18.6 15.9 117 KELLEY R.S. 8180 11.3 12.9 88 13.8 16.2 85 LILY LAKE 9156 11.5 10.0 115 14.5 13.3 109 MONTE CRISTO 8960 22.3 22.7 98 21.6 19.7 110 SALT RIVER SUMMIT 7760 10.7 11.4 94 12.6 14.8 85 TRIAL LAKE 9992 16.2 19.1 85 19.3 19.0 102 ----- ----- Basin wide percent of average 97 100 ----------------------------------------------------------------------------- -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.