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 TUESDAY: MARCH 4 , 2008 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 15.6 16.3 96 22.1 18.9 117 COTTONWOOD CREEK 7670 20.4 19.1 107 21.4 23.5 91 GRAND TARGHEE 9260 41.1 -M * 27.6 -M * GRANITE CREEK 6770 14.9 16.5 90 20.1 17.8 113 GRASSY LAKE 7265 27.1 30.2 90 34.4 31.6 109 GROS VENTRE SUMMIT 8750 11.4 11.8 97 12.5 11.0 114 GUNSIGHT PASS 9820 10.5 -M * 12.3 -M * LEWIS LAKE DIVIDE 7850 27.0 30.3 89 31.1 32.2 97 PHILLIPS BENCH 8200 26.6 24.5 109 29.2 25.1 116 SALT RIVER SUMMIT 7760 11.6 12.4 94 13.5 16.1 84 SNAKE RIVER STATION 6920 15.1 16.9 89 22.6 19.8 114 SPRING CREEK DIVIDE 9000 19.1 22.7 84 19.5 22.9 85 THUMB DIVIDE 7980 14.1 15.8 89 16.5 16.4 101 TOGWOTEE PASS 9580 22.7 21.1 108 24.8 21.1 118 TWO OCEAN PLATEAU 9240 30.2 23.8 127 23.3 23.9 97 WILLOW CREEK 8380 26.9 26.0 103 32.4 27.6 117 ----- ----- Basin wide percent of average 98 105 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 21.9 20.2 108 20.7 17.4 119 BLACK BEAR 8170 -M 33.9 * -M 34.1 * CANYON 7870 14.7 11.7 126 17.8 13.3 134 FISHER CREEK 9100 36.5 30.3 120 -M 31.3 * MADISON PLATEAU 7750 25.9 21.4 121 28.5 22.6 126 NORTHEAST ENTRANCE 7350 8.1 10.0 81 11.5 11.0 105 PARKER PEAK 9400 22.0 18.6 118 -M 14.0 * SYLVAN LAKE 8420 17.9 19.2 93 22.4 18.2 123 THUMB DIVIDE 7980 14.1 15.8 89 16.5 16.4 101 TWO OCEAN PLATEAU 9240 30.2 23.8 127 23.3 23.9 97 WHISKEY CREEK 6800 16.2 14.8 109 22.1 17.8 124 WHITE MILL 8700 23.3 20.8 112 -M 23.2 * WOLVERINE 7650 8.8 10.8 81 11.2 11.4 98 ----- ----- Basin wide percent of average 110 114 WIND RIVER BURROUGHS CREEK 8750 13.2 12.9 102 16.0 14.0 114 COLD SPRINGS 9630 5.5 7.4 74 8.6 8.6 100 DEER PARK 9700 12.1 14.5 83 16.5 18.3 90 HOBBS PARK 10100 11.0 12.1 91 11.4 10.1 113 LITTLE WARM 9370 8.1 9.7 84 11.4 11.1 103 SOUTH PASS 9040 11.3 14.4 78 14.1 15.3 92 ST. LAWRENCE ALT 8620 5.6 6.1 92 7.1 7.1 100 TOGWOTEE PASS 9580 22.7 21.1 108 24.8 21.1 118 TOWNSEND CREEK 8700 6.9 7.1 97 9.9 9.1 109 ----- ----- Basin wide percent of average 92 104 BIGHORN BASIN BALD MTN. 9380 13.8 16.3 85 13.0 14.4 90 BEAR TRAP MEADOW 8200 7.0 4.5 156 7.4 6.5 114 BLACKWATER 9780 20.7 20.9 99 19.0 17.5 109 BONE SPRINGS DIV 9350 14.1 13.5 104 14.9 11.9 125 EVENING STAR 9200 25.3 25.6 99 -M 22.2 * GRAVE SPRINGS 8550 7.9 7.5 105 8.7 8.0 109 KIRWIN 9550 10.2 9.3 110 12.5 9.4 133 MARQUETTE 8760 3.9 7.0 56 7.6 7.7 99 MIDDLE POWDER 7760 9.2 9.2 100 7.6 9.8 78 OWL CREEK 8975 4.4 4.2 105 5.5 4.5 122 POWDER RIVER PASS 9480 10.2 8.9 115 12.2 10.2 120 SHELL CREEK 9580 13.3 12.1 110 13.0 11.0 118 SYLVAN LAKE 8420 17.9 19.2 93 22.4 18.2 123 SYLVAN ROAD 7120 9.7 11.6 84 18.4 15.8 116 TIMBER CREEK 7950 3.2 4.3 74 6.6 5.5 120 YOUNTS PEAK 8350 14.3 14.9 96 15.1 13.9 109 ----- ----- Basin wide percent of average 98 112 SHOSHONE RIVER BLACKWATER 9780 20.7 20.9 99 19.0 17.5 109 EVENING STAR 9200 25.3 25.6 99 -M 22.2 * KIRWIN 9550 10.2 9.3 110 12.5 9.4 133 MARQUETTE 8760 3.9 7.0 56 7.6 7.7 99 SYLVAN LAKE 8420 17.9 19.2 93 22.4 18.2 123 SYLVAN ROAD 7120 9.7 11.6 84 18.4 15.8 116 YOUNTS PEAK 8350 14.3 14.9 96 15.1 13.9 109 ----- ----- Basin wide percent of average 94 115 POWDER-TONGUE BEAR TRAP MEADOW 8200 7.0 4.5 156 7.4 6.5 114 BIG GOOSE 7990 6.8 7.9 86 9.7 6.9 141 BONE SPRINGS DIV 9350 14.1 13.5 104 14.9 11.9 125 BURGESS JUNCTION 7880 9.8 9.2 107 11.3 9.7 116 CLOUD PEAK RESERVOIR 9860 12.7 10.3 123 12.7 10.0 127 DOME LAKE 8880 8.8 9.7 91 12.1 10.4 116 GRAVE SPRINGS 8550 7.9 7.5 105 8.7 8.0 109 HANSEN SAWMILL 8360 5.3 5.3 100 7.5 6.4 117 MIDDLE POWDER 7760 9.2 9.2 100 7.6 9.8 78 POWDER RIVER PASS 9480 10.2 8.9 115 12.2 10.2 120 SUCKER CREEK 8880 11.3 9.4 120 13.1 10.7 122 TIE CREEK 6870 5.8 5.1 114 9.7 8.0 121 ----- ----- Basin wide percent of average 108 117 BELLE FOURCHE BLIND PARK 6890 6.1 7.4 82 8.9 9.5 94 COLE CANYON 5910 5.1 5.9 86 6.3 5.6 112 NORTH RAPID CREEK 6130 7.1 7.0 101 7.1 7.6 93 ----- ----- Basin wide percent of average 90 98 UPPER N. PLATTE RIVER COLUMBINE 9160 22.4 22.4 100 24.6 21.3 115 DIVIDE PEAK 8880 20.6 16.0 129 20.8 17.4 120 ELK RIVER 8700 21.9 16.5 133 20.9 16.5 127 JOE WRIGHT 10120 20.2 17.6 115 23.9 20.6 116 NORTH FRENCH CREEK 10130 26.1 23.2 112 25.6 20.7 124 OLD BATTLE 10000 28.4 26.9 106 33.0 29.1 113 SAGE CREEK BASIN 7850 16.0 9.3 172 16.4 10.1 162 SOUTH BRUSH CREEK 8440 11.7 10.3 114 15.0 13.6 110 TOWER 10500 -M 38.3 * -M 32.6 * WEBBER SPRINGS 9250 22.4 22.0 102 26.0 22.5 116 WILLOW CREEK PASS 9540 13.7 9.8 140 13.9 10.6 131 ----- ----- Basin wide percent of average 117 121 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 17.6 19.4 91 18.4 17.9 103 CASPER MTN. 7900 10.7 11.5 93 11.8 11.3 104 DEADMAN HILL 10220 14.8 13.2 112 15.2 13.6 112 DEER PARK 9700 12.1 14.5 83 16.5 18.3 90 LAPRELE CREEK 8375 5.9 9.1 65 8.6 10.3 83 RENO HILL 8400 10.7 10.7 100 12.4 11.8 105 ROACH 9700 16.8 14.2 118 19.3 15.3 126 SAND LAKE 10050 23.3 25.9 90 23.2 19.7 118 SOUTH PASS 9040 11.3 14.4 78 14.1 15.3 92 WINDY PEAK 7900 6.6 6.2 106 8.0 8.7 92 ----- ----- Basin wide percent of average 93 104 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 14.9 10.0 149 15.0 12.6 119 DIVIDE PEAK 8880 20.6 16.0 129 20.8 17.4 120 OLD BATTLE 10000 28.4 26.9 106 33.0 29.1 113 SANDSTONE RS 8150 15.5 12.8 121 19.2 16.0 120 WHISKEY PARK 8950 28.2 24.5 115 30.2 23.9 126 ----- ----- Basin wide percent of average 119 119 UPPER GREEN RIVER BIG SANDY OPENING 9080 11.0 12.4 89 11.1 11.6 96 BLIND BULL SUM 8650 21.0 23.6 89 15.6 19.4 80 EAST RIM DIVIDE 7930 7.4 11.3 65 9.6 10.4 92 ELKHART PARK G.S. 9400 9.5 11.4 83 10.1 11.2 90 GROS VENTRE SUMMIT 8750 11.4 11.8 97 12.5 11.0 114 GUNSIGHT PASS 9820 10.5 -M * 12.3 -M * KENDALL R.S. 7740 9.8 12.7 77 11.6 12.8 91 LOOMIS PARK 8240 13.3 14.9 89 14.9 15.1 99 NEW FORK LAKE 8340 8.1 9.8 83 8.2 9.8 84 SNIDER BASIN 8060 11.1 12.7 87 12.1 14.0 86 SPRING CREEK DIVIDE 9000 19.1 22.7 84 19.5 22.9 85 TRIPLE PEAK 8500 20.4 21.3 96 23.5 21.2 111 ----- ----- Basin wide percent of average 86 93 LOWER GREEN RIVER HAMS FORK 7840 10.3 11.3 91 8.6 10.6 81 HEWINTA 9519 11.4 9.4 121 14.6 11.9 123 HICKERSON PARK 9145 6.4 6.0 107 8.7 6.4 136 HOLE-IN-ROCK 9150 5.5 5.9 93 8.7 5.9 147 INDIAN CREEK 9425 19.7 22.9 86 -M 21.5 * KELLEY R.S. 8180 12.3 14.3 86 14.8 17.5 85 STEEL CREEK PARK 10200 12.9 13.0 99 16.1 13.2 122 ----- ----- Basin wide percent of average 95 109 UPPER BEAR RIVER BUG LAKE 7950 15.7 17.5 90 15.2 16.5 92 HAYDEN FORK 9212 16.9 13.5 125 20.6 17.5 118 KELLEY R.S. 8180 12.3 14.3 86 14.8 17.5 85 LILY LAKE 9156 12.9 11.1 116 15.6 14.6 107 MONTE CRISTO 8960 25.0 25.4 98 23.6 21.6 109 SALT RIVER SUMMIT 7760 11.6 12.4 94 13.5 16.1 84 TRIAL LAKE 9992 18.7 21.1 89 21.6 21.0 103 ----- ----- Basin wide percent of average 98 100 ----------------------------------------------------------------------------- -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.