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: MARCH 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 17.0 17.8 96 24.6 20.6 119 COTTONWOOD CREEK 7670 22.8 22.6 101 23.4 26.1 90 GRAND TARGHEE 9260 46.9 -M * 33.1 -M * GRANITE CREEK 6770 16.8 18.4 91 21.8 19.3 113 GRASSY LAKE 7265 33.1 34.1 97 -M 34.6 * GROS VENTRE SUMMIT 8750 12.0 13.5 89 13.1 12.3 107 GUNSIGHT PASS 9820 11.1 -M * 13.1 -M * LEWIS LAKE DIVIDE 7850 32.0 34.0 94 35.5 35.4 100 PHILLIPS BENCH 8200 30.8 27.6 112 32.7 27.8 118 SALT RIVER SUMMIT 7760 12.9 13.8 93 14.8 17.8 83 SNAKE RIVER STATION 6920 18.3 18.8 97 26.0 21.5 121 SPRING CREEK DIVIDE 9000 21.4 25.3 85 22.2 25.2 88 THUMB DIVIDE 7980 16.5 18.2 91 18.9 18.1 104 TOGWOTEE PASS 9580 25.3 23.6 107 27.5 23.4 118 TWO OCEAN PLATEAU 9240 -M 26.6 * -M 26.5 * WILLOW CREEK 8380 30.1 29.0 104 34.8 30.6 114 ----- ----- Basin wide percent of average 97 106 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 24.2 22.5 108 23.0 19.2 120 BLACK BEAR 8170 43.4 37.7 115 -M 38.4 * CANYON 7870 16.2 13.2 123 19.5 14.7 133 FISHER CREEK 9100 38.6 33.3 116 -M 34.7 * MADISON PLATEAU 7750 28.0 23.9 117 30.5 25.3 121 NORTHEAST ENTRANCE 7350 -M 10.9 * -M 12.1 * PARKER PEAK 9400 24.6 20.6 119 -M 15.4 * SYLVAN LAKE 8420 20.1 21.4 94 24.6 20.0 123 THUMB DIVIDE 7980 16.5 18.2 91 18.9 18.1 104 TWO OCEAN PLATEAU 9240 -M 26.6 * -M 26.5 * WHISKEY CREEK 6800 17.7 16.4 108 23.9 20.0 119 WHITE MILL 8700 25.8 23.1 112 24.4 25.8 95 WOLVERINE 7650 10.6 11.4 93 13.1 12.3 107 ----- ----- Basin wide percent of average 110 114 WIND RIVER BURROUGHS CREEK 8750 14.7 14.0 105 17.6 15.4 114 COLD SPRINGS 9630 6.1 8.4 73 9.2 9.7 95 DEER PARK 9700 14.7 16.2 91 19.3 20.6 94 HOBBS PARK 10100 13.1 13.8 95 13.3 11.6 115 LITTLE WARM 9370 9.0 11.1 81 12.5 12.5 100 SOUTH PASS 9040 13.7 16.0 86 16.6 17.2 97 ST. LAWRENCE ALT 8620 6.7 6.8 99 8.2 8.1 101 TOGWOTEE PASS 9580 25.3 23.6 107 27.5 23.4 118 TOWNSEND CREEK 8700 8.6 8.1 106 11.9 10.5 113 ----- ----- Basin wide percent of average 95 106 BIGHORN BASIN BALD MTN. 9380 15.5 18.4 84 14.2 16.2 88 BEAR TRAP MEADOW 8200 8.4 5.2 162 8.5 7.5 113 BLACKWATER 9780 23.2 23.2 100 21.5 19.4 111 BONE SPRINGS DIV 9350 15.8 15.1 105 16.2 13.5 120 EVENING STAR 9200 28.2 28.2 100 30.0 24.1 124 GRAVE SPRINGS 8550 9.4 8.6 109 10.0 9.0 111 KIRWIN 9550 11.2 10.5 107 13.4 10.4 129 MARQUETTE 8760 5.4 8.1 67 8.8 8.8 100 MIDDLE POWDER 7760 10.9 10.9 100 8.9 11.3 79 OWL CREEK 8975 5.2 5.1 102 6.3 5.2 121 POWDER RIVER PASS 9480 11.5 10.1 114 13.6 11.4 119 SHELL CREEK 9580 14.7 13.7 107 14.1 12.3 115 SYLVAN LAKE 8420 20.1 21.4 94 24.6 20.0 123 SYLVAN ROAD 7120 11.3 12.3 92 19.9 17.0 117 TIMBER CREEK 7950 3.9 5.2 75 7.5 6.6 114 YOUNTS PEAK 8350 15.7 16.4 96 16.3 15.4 106 ----- ----- Basin wide percent of average 99 112 SHOSHONE RIVER BLACKWATER 9780 23.2 23.2 100 21.5 19.4 111 EVENING STAR 9200 28.2 28.2 100 30.0 24.1 124 KIRWIN 9550 11.2 10.5 107 13.4 10.4 129 MARQUETTE 8760 5.4 8.1 67 8.8 8.8 100 SYLVAN LAKE 8420 20.1 21.4 94 24.6 20.0 123 SYLVAN ROAD 7120 11.3 12.3 92 19.9 17.0 117 YOUNTS PEAK 8350 15.7 16.4 96 16.3 15.4 106 ----- ----- Basin wide percent of average 96 117 POWDER-TONGUE BEAR TRAP MEADOW 8200 8.4 5.2 162 8.5 7.5 113 BIG GOOSE 7990 7.8 9.3 84 10.5 7.8 135 BONE SPRINGS DIV 9350 15.8 15.1 105 16.2 13.5 120 BURGESS JUNCTION 7880 11.2 10.7 105 12.6 11.1 114 CLOUD PEAK RESERVOIR 9860 14.3 12.2 117 14.0 11.6 121 DOME LAKE 8880 10.1 11.3 89 13.4 11.9 113 GRAVE SPRINGS 8550 9.4 8.6 109 10.0 9.0 111 HANSEN SAWMILL 8360 6.0 6.2 97 8.1 7.4 109 MIDDLE POWDER 7760 10.9 10.9 100 8.9 11.3 79 POWDER RIVER PASS 9480 11.5 10.1 114 13.6 11.4 119 SUCKER CREEK 8880 13.1 10.8 121 15.0 12.4 121 TIE CREEK 6870 6.9 6.1 113 10.9 9.1 120 ----- ----- Basin wide percent of average 108 114 BELLE FOURCHE BLIND PARK 6890 7.1 8.6 83 9.9 10.4 95 COLE CANYON 5910 5.6 6.5 86 6.9 6.2 111 NORTH RAPID CREEK 6130 7.8 7.8 100 8.0 8.2 98 ----- ----- Basin wide percent of average 90 100 UPPER N. PLATTE RIVER COLUMBINE 9160 25.8 24.4 106 26.5 23.8 111 DIVIDE PEAK 8880 21.2 18.6 114 21.6 19.6 110 ELK RIVER 8700 24.5 18.4 133 22.0 18.4 120 JOE WRIGHT 10120 21.5 19.8 109 24.7 23.2 106 NORTH FRENCH CREEK 10130 28.6 26.9 106 27.6 23.2 119 OLD BATTLE 10000 30.9 30.4 102 33.7 32.8 103 SAGE CREEK BASIN 7850 16.6 10.8 154 16.8 11.3 149 SOUTH BRUSH CREEK 8440 12.8 12.3 104 15.9 15.2 105 TOWER 10500 40.2 42.8 94 -M 36.3 * WEBBER SPRINGS 9250 24.3 25.3 96 27.9 25.2 111 WILLOW CREEK PASS 9540 14.5 11.1 131 14.4 11.9 121 ----- ----- Basin wide percent of average 108 113 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 19.7 22.0 90 20.3 20.5 99 CASPER MTN. 7900 12.2 13.2 92 13.2 13.0 102 DEADMAN HILL 10220 15.9 15.1 105 16.3 15.7 104 DEER PARK 9700 14.7 16.2 91 19.3 20.6 94 LAPRELE CREEK 8375 7.2 10.4 69 9.8 11.6 84 RENO HILL 8400 12.3 12.8 96 14.1 13.6 104 ROACH 9700 17.8 15.9 112 20.4 17.4 117 SAND LAKE 10050 25.6 30.2 85 25.5 22.4 114 SOUTH PASS 9040 13.7 16.0 86 16.6 17.2 97 WINDY PEAK 7900 7.5 7.6 99 8.8 9.8 90 ----- ----- Basin wide percent of average 92 102 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M 11.5 * .0 14.7 0 DIVIDE PEAK 8880 21.2 18.6 114 21.6 19.6 110 OLD BATTLE 10000 30.9 30.4 102 33.7 32.8 103 SANDSTONE RS 8150 16.6 14.7 113 20.1 17.8 113 WHISKEY PARK 8950 29.5 28.6 103 31.0 27.0 115 ----- ----- Basin wide percent of average 106 95 UPPER GREEN RIVER BIG SANDY OPENING 9080 12.2 13.8 88 12.2 12.7 96 BLIND BULL SUM 8650 23.4 26.8 87 17.1 21.3 80 EAST RIM DIVIDE 7930 8.3 12.6 66 10.4 11.6 90 ELKHART PARK G.S. 9400 10.5 12.8 82 11.1 12.6 88 GROS VENTRE SUMMIT 8750 12.0 13.5 89 13.1 12.3 107 GUNSIGHT PASS 9820 11.1 -M * 13.1 -M * KENDALL R.S. 7740 11.3 14.4 78 13.0 14.1 92 LOOMIS PARK 8240 14.8 16.8 88 16.5 16.7 99 NEW FORK LAKE 8340 9.0 10.8 83 8.8 10.8 81 SNIDER BASIN 8060 12.6 14.1 89 13.6 15.4 88 SPRING CREEK DIVIDE 9000 21.4 25.3 85 22.2 25.2 88 TRIPLE PEAK 8500 23.1 23.9 97 26.2 23.6 111 ----- ----- Basin wide percent of average 86 93 LOWER GREEN RIVER HAMS FORK 7840 11.4 12.4 92 9.6 11.6 83 HEWINTA 9519 14.6 11.0 133 16.4 13.5 121 HICKERSON PARK 9145 7.6 6.8 112 9.8 7.3 134 HOLE-IN-ROCK 9150 6.9 6.6 105 10.2 6.8 150 INDIAN CREEK 9425 23.1 26.3 88 -M 24.0 * KELLEY R.S. 8180 14.1 16.2 87 16.8 19.3 87 STEEL CREEK PARK 10200 15.1 14.8 102 18.1 15.0 121 ----- ----- Basin wide percent of average 99 110 UPPER BEAR RIVER BUG LAKE 7950 17.3 19.9 87 16.4 18.3 90 HAYDEN FORK 9212 19.4 15.5 125 22.2 19.7 113 KELLEY R.S. 8180 14.1 16.2 87 16.8 19.3 87 LILY LAKE 9156 14.8 12.4 119 17.0 16.4 104 MONTE CRISTO 8960 27.3 28.7 95 25.5 24.1 106 SALT RIVER SUMMIT 7760 12.9 13.8 93 14.8 17.8 83 TRIAL LAKE 9992 20.9 23.9 87 23.3 23.6 99 ----- ----- Basin wide percent of average 97 98 ----------------------------------------------------------------------------- -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.