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 MONDAY: MARCH 17 , 2008 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 -M 17.5 * 23.3 20.3 115 COTTONWOOD CREEK 7670 21.5 21.9 98 22.3 25.4 88 GRAND TARGHEE 9260 44.6 -M * 31.5 -M * GRANITE CREEK 6770 15.8 18.1 87 21.0 19.0 111 GRASSY LAKE 7265 30.1 33.3 90 35.4 33.9 104 GROS VENTRE SUMMIT 8750 11.4 13.1 87 12.7 12.0 106 GUNSIGHT PASS 9820 10.7 -M * 12.6 -M * LEWIS LAKE DIVIDE 7850 28.9 33.2 87 32.9 34.7 95 PHILLIPS BENCH 8200 29.2 26.9 109 31.1 27.2 114 SALT RIVER SUMMIT 7760 -M 13.5 * -M 17.4 * SNAKE RIVER STATION 6920 16.3 18.5 88 24.3 21.1 115 SPRING CREEK DIVIDE 9000 19.8 24.7 80 20.6 24.7 83 THUMB DIVIDE 7980 15.2 17.7 86 17.6 17.7 99 TOGWOTEE PASS 9580 24.2 23.0 105 26.4 22.8 116 TWO OCEAN PLATEAU 9240 31.7 25.9 122 23.4 25.9 90 WILLOW CREEK 8380 28.6 28.3 101 34.0 29.9 114 ----- ----- Basin wide percent of average 96 103 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 22.7 22.2 102 21.3 18.8 113 BLACK BEAR 8170 41.3 36.8 112 -M 37.4 * CANYON 7870 15.6 12.9 121 18.9 14.4 131 FISHER CREEK 9100 37.0 32.7 113 -M 33.9 * MADISON PLATEAU 7750 26.7 23.4 114 29.4 24.7 119 NORTHEAST ENTRANCE 7350 -M 10.7 * -M 11.8 * PARKER PEAK 9400 23.3 20.1 116 -M 15.1 * SYLVAN LAKE 8420 18.9 20.9 90 23.6 19.6 120 THUMB DIVIDE 7980 15.2 17.7 86 17.6 17.7 99 TWO OCEAN PLATEAU 9240 31.7 25.9 122 23.4 25.9 90 WHISKEY CREEK 6800 16.9 16.1 105 23.2 19.5 119 WHITE MILL 8700 24.2 22.7 107 24.0 25.2 95 WOLVERINE 7650 9.7 11.4 85 12.0 12.1 99 ----- ----- Basin wide percent of average 108 109 WIND RIVER BURROUGHS CREEK 8750 13.7 13.8 99 16.5 15.1 109 COLD SPRINGS 9630 5.8 8.2 71 8.9 9.4 95 DEER PARK 9700 13.8 15.3 90 18.1 20.1 90 HOBBS PARK 10100 12.4 13.3 93 12.5 11.2 112 LITTLE WARM 9370 8.5 10.8 79 11.8 12.1 98 SOUTH PASS 9040 13.0 15.5 84 15.9 16.7 95 ST. LAWRENCE ALT 8620 6.4 6.7 96 7.9 7.8 101 TOGWOTEE PASS 9580 24.2 23.0 105 26.4 22.8 116 TOWNSEND CREEK 8700 8.3 7.8 106 11.4 10.1 113 ----- ----- Basin wide percent of average 93 103 BIGHORN BASIN BALD MTN. 9380 15.0 17.8 84 13.8 15.8 87 BEAR TRAP MEADOW 8200 8.1 5.0 162 8.3 7.2 115 BLACKWATER 9780 21.6 22.7 95 20.1 19.0 106 BONE SPRINGS DIV 9350 15.2 14.6 104 15.6 13.1 119 EVENING STAR 9200 26.3 27.7 95 29.6 23.7 125 GRAVE SPRINGS 8550 9.1 8.3 110 9.9 8.8 112 KIRWIN 9550 10.7 10.3 104 12.8 10.2 125 MARQUETTE 8760 5.1 7.7 66 8.5 8.4 101 MIDDLE POWDER 7760 10.5 10.3 102 8.7 10.9 80 OWL CREEK 8975 5.0 4.8 104 6.1 5.0 122 POWDER RIVER PASS 9480 10.9 9.9 110 13.0 11.1 117 SHELL CREEK 9580 14.1 13.3 106 13.7 12.0 114 SYLVAN LAKE 8420 18.9 20.9 90 23.6 19.6 120 SYLVAN ROAD 7120 10.4 12.2 85 19.1 16.7 114 TIMBER CREEK 7950 3.8 4.9 78 7.5 6.3 119 YOUNTS PEAK 8350 14.7 16.0 92 15.8 15.0 105 ----- ----- Basin wide percent of average 97 111 SHOSHONE RIVER BLACKWATER 9780 21.6 22.7 95 20.1 19.0 106 EVENING STAR 9200 26.3 27.7 95 29.6 23.7 125 KIRWIN 9550 10.7 10.3 104 12.8 10.2 125 MARQUETTE 8760 5.1 7.7 66 8.5 8.4 101 SYLVAN LAKE 8420 18.9 20.9 90 23.6 19.6 120 SYLVAN ROAD 7120 10.4 12.2 85 19.1 16.7 114 YOUNTS PEAK 8350 14.7 16.0 92 15.8 15.0 105 ----- ----- Basin wide percent of average 92 115 POWDER-TONGUE BEAR TRAP MEADOW 8200 8.1 5.0 162 8.3 7.2 115 BIG GOOSE 7990 7.4 8.9 83 10.2 7.5 136 BONE SPRINGS DIV 9350 15.2 14.6 104 15.6 13.1 119 BURGESS JUNCTION 7880 10.9 10.2 107 12.4 10.7 116 CLOUD PEAK RESERVOIR 9860 13.9 11.6 120 13.4 11.2 120 DOME LAKE 8880 9.5 10.8 88 12.9 11.5 112 GRAVE SPRINGS 8550 9.1 8.3 110 9.9 8.8 112 HANSEN SAWMILL 8360 5.8 5.9 98 7.9 7.2 110 MIDDLE POWDER 7760 10.5 10.3 102 8.7 10.9 80 POWDER RIVER PASS 9480 10.9 9.9 110 13.0 11.1 117 SUCKER CREEK 8880 12.7 10.3 123 14.4 11.9 121 TIE CREEK 6870 6.7 5.9 114 10.8 8.8 123 ----- ----- Basin wide percent of average 108 115 BELLE FOURCHE BLIND PARK 6890 7.0 8.4 83 9.8 10.2 96 COLE CANYON 5910 5.4 6.3 86 6.9 6.1 113 NORTH RAPID CREEK 6130 7.7 7.6 101 7.8 8.0 98 ----- ----- Basin wide percent of average 90 101 UPPER N. PLATTE RIVER COLUMBINE 9160 25.3 24.0 105 26.1 23.2 112 DIVIDE PEAK 8880 21.0 18.0 117 21.5 19.0 113 ELK RIVER 8700 24.0 18.0 133 21.8 18.0 121 JOE WRIGHT 10120 21.3 19.3 110 24.5 22.5 109 NORTH FRENCH CREEK 10130 28.1 26.0 108 27.2 22.6 120 OLD BATTLE 10000 30.2 29.6 102 33.6 31.9 105 SAGE CREEK BASIN 7850 16.5 10.4 159 16.8 11.0 153 SOUTH BRUSH CREEK 8440 12.6 11.9 106 15.8 14.8 107 TOWER 10500 39.3 41.7 94 30.9 35.4 87 WEBBER SPRINGS 9250 23.8 24.6 97 27.6 24.5 113 WILLOW CREEK PASS 9540 14.4 10.8 133 14.2 11.6 122 ----- ----- Basin wide percent of average 109 111 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 19.2 21.3 90 19.8 19.8 100 CASPER MTN. 7900 12.1 12.7 95 13.1 12.6 104 DEADMAN HILL 10220 15.7 14.6 108 16.0 15.1 106 DEER PARK 9700 13.8 15.3 90 18.1 20.1 90 LAPRELE CREEK 8375 7.1 10.1 70 9.8 11.3 87 RENO HILL 8400 12.2 12.2 100 14.0 13.1 107 ROACH 9700 17.6 15.5 114 20.3 16.9 120 SAND LAKE 10050 25.2 29.2 86 25.1 21.7 116 SOUTH PASS 9040 13.0 15.5 84 15.9 16.7 95 WINDY PEAK 7900 7.5 7.3 103 8.8 9.5 93 ----- ----- Basin wide percent of average 93 103 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 15.8 11.4 139 15.7 14.2 111 DIVIDE PEAK 8880 21.0 18.0 117 21.5 19.0 113 OLD BATTLE 10000 30.2 29.6 102 33.6 31.9 105 SANDSTONE RS 8150 16.5 14.4 115 20.0 17.4 115 WHISKEY PARK 8950 28.7 27.7 104 31.0 26.2 118 ----- ----- Basin wide percent of average 111 112 UPPER GREEN RIVER BIG SANDY OPENING 9080 11.3 13.5 84 11.4 12.5 91 BLIND BULL SUM 8650 22.0 26.1 84 16.2 20.8 78 EAST RIM DIVIDE 7930 7.9 12.3 64 9.9 11.3 88 ELKHART PARK G.S. 9400 9.9 12.5 79 10.6 12.2 87 GROS VENTRE SUMMIT 8750 11.4 13.1 87 12.7 12.0 106 GUNSIGHT PASS 9820 10.7 -M * 12.6 -M * KENDALL R.S. 7740 10.3 14.1 73 12.0 13.8 87 LOOMIS PARK 8240 13.9 16.4 85 15.5 16.3 95 NEW FORK LAKE 8340 8.5 10.6 80 8.3 10.6 78 SNIDER BASIN 8060 11.5 13.8 83 12.3 15.0 82 SPRING CREEK DIVIDE 9000 19.8 24.7 80 20.6 24.7 83 TRIPLE PEAK 8500 21.7 23.4 93 24.7 23.1 107 ----- ----- Basin wide percent of average 82 89 LOWER GREEN RIVER HAMS FORK 7840 10.9 12.3 89 8.9 11.4 78 HEWINTA 9519 13.9 10.6 131 16.2 13.1 124 HICKERSON PARK 9145 7.6 6.6 115 9.9 7.0 141 HOLE-IN-ROCK 9150 6.8 6.4 106 10.0 6.6 152 INDIAN CREEK 9425 21.2 25.5 83 -M 23.4 * KELLEY R.S. 8180 12.8 15.8 81 15.5 18.9 82 STEEL CREEK PARK 10200 14.7 14.4 102 17.8 14.5 123 ----- ----- Basin wide percent of average 96 110 UPPER BEAR RIVER BUG LAKE 7950 16.6 19.4 86 15.7 17.9 88 HAYDEN FORK 9212 18.9 15.1 125 21.9 19.1 115 KELLEY R.S. 8180 12.8 15.8 81 15.5 18.9 82 LILY LAKE 9156 14.4 12.1 119 16.9 15.9 106 MONTE CRISTO 8960 26.4 28.0 94 24.7 23.5 105 SALT RIVER SUMMIT 7760 -M 13.5 * -M 17.4 * TRIAL LAKE 9992 20.2 23.3 87 22.4 23.0 97 ----- ----- Basin wide percent of average 96 99 ----------------------------------------------------------------------------- -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.