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 31 , 2008 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 19.0 18.1 105 27.6 21.6 128 COTTONWOOD CREEK 7670 25.5 24.1 106 25.7 27.6 93 GRAND TARGHEE 9260 49.6 -M * 34.7 -M * GRANITE CREEK 6770 19.2 18.7 103 24.0 20.1 119 GRASSY LAKE 7265 37.3 36.0 104 -M 36.2 * GROS VENTRE SUMMIT 8750 13.2 14.3 92 14.4 13.0 111 GUNSIGHT PASS 9820 12.6 -M * 14.7 -M * LEWIS LAKE DIVIDE 7850 35.8 35.7 100 38.0 37.0 103 PHILLIPS BENCH 8200 34.3 29.1 118 35.1 29.2 120 SALT RIVER SUMMIT 7760 13.8 14.6 95 16.1 18.9 85 SNAKE RIVER STATION 6920 21.0 19.2 109 28.4 22.4 127 SPRING CREEK DIVIDE 9000 23.2 26.8 87 24.3 26.6 91 THUMB DIVIDE 7980 19.3 19.2 101 21.1 19.0 111 TOGWOTEE PASS 9580 28.0 25.0 112 30.1 24.7 122 TWO OCEAN PLATEAU 9240 -M 28.2 * -M 27.9 * WILLOW CREEK 8380 33.5 30.5 110 38.2 32.4 118 ----- ----- Basin wide percent of average 104 110 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 26.0 23.5 111 24.7 20.2 122 BLACK BEAR 8170 46.6 39.6 118 -M 40.7 * CANYON 7870 18.2 13.9 131 21.3 15.5 137 FISHER CREEK 9100 42.6 35.3 121 -M 36.6 * MADISON PLATEAU 7750 30.4 25.4 120 32.6 26.9 121 NORTHEAST ENTRANCE 7350 -M 11.3 * -M 12.7 * PARKER PEAK 9400 27.2 21.8 125 -M 16.3 * SYLVAN LAKE 8420 22.1 22.7 97 26.6 21.0 127 THUMB DIVIDE 7980 19.3 19.2 101 21.1 19.0 111 TWO OCEAN PLATEAU 9240 -M 28.2 * -M 27.9 * WHISKEY CREEK 6800 19.1 17.4 110 25.2 21.1 119 WHITE MILL 8700 28.8 24.5 118 -M 27.2 * WOLVERINE 7650 11.4 11.6 98 14.3 12.8 112 ----- ----- Basin wide percent of average 114 121 WIND RIVER BURROUGHS CREEK 8750 16.5 14.8 111 19.3 16.3 118 COLD SPRINGS 9630 6.9 9.0 77 10.2 10.6 96 DEER PARK 9700 15.7 17.0 92 20.2 21.9 92 HOBBS PARK 10100 14.3 15.0 95 14.2 12.8 111 LITTLE WARM 9370 10.3 12.0 86 14.0 13.4 104 SOUTH PASS 9040 14.7 16.7 88 17.6 18.5 95 ST. LAWRENCE ALT 8620 6.9 7.4 93 8.5 8.8 97 TOGWOTEE PASS 9580 28.0 25.0 112 30.1 24.7 122 TOWNSEND CREEK 8700 8.9 8.7 102 12.3 11.6 106 ----- ----- Basin wide percent of average 97 106 BIGHORN BASIN BALD MTN. 9380 17.0 19.7 86 15.5 17.4 89 BEAR TRAP MEADOW 8200 9.2 5.2 177 9.3 8.2 113 BLACKWATER 9780 26.3 24.8 106 23.5 20.6 114 BONE SPRINGS DIV 9350 17.7 16.3 109 17.4 14.6 119 EVENING STAR 9200 31.1 30.0 104 34.1 25.4 134 GRAVE SPRINGS 8550 9.8 9.4 104 10.4 9.6 108 KIRWIN 9550 12.5 11.4 110 14.7 11.2 131 MARQUETTE 8760 6.7 9.0 74 9.8 9.7 101 MIDDLE POWDER 7760 11.6 11.8 98 9.4 12.3 76 OWL CREEK 8975 5.6 5.6 100 6.8 5.8 117 POWDER RIVER PASS 9480 12.6 10.9 116 14.7 12.3 120 SHELL CREEK 9580 16.0 14.8 108 15.4 13.3 116 SYLVAN LAKE 8420 22.1 22.7 97 26.6 21.0 127 SYLVAN ROAD 7120 13.3 12.9 103 21.9 17.7 124 TIMBER CREEK 7950 4.3 5.8 74 8.0 7.3 110 YOUNTS PEAK 8350 17.7 17.2 103 18.2 16.2 112 ----- ----- Basin wide percent of average 103 115 SHOSHONE RIVER BLACKWATER 9780 26.3 24.8 106 23.5 20.6 114 EVENING STAR 9200 31.1 30.0 104 34.1 25.4 134 KIRWIN 9550 12.5 11.4 110 14.7 11.2 131 MARQUETTE 8760 6.7 9.0 74 9.8 9.7 101 SYLVAN LAKE 8420 22.1 22.7 97 26.6 21.0 127 SYLVAN ROAD 7120 13.3 12.9 103 21.9 17.7 124 YOUNTS PEAK 8350 17.7 17.2 103 18.2 16.2 112 ----- ----- Basin wide percent of average 101 122 POWDER-TONGUE BEAR TRAP MEADOW 8200 9.2 5.2 177 9.3 8.2 113 BIG GOOSE 7990 9.1 10.6 86 11.9 8.4 142 BONE SPRINGS DIV 9350 17.7 16.3 109 17.4 14.6 119 BURGESS JUNCTION 7880 12.3 11.7 105 13.7 12.1 113 CLOUD PEAK RESERVOIR 9860 15.6 13.4 116 15.0 12.8 117 DOME LAKE 8880 11.7 12.4 94 14.9 13.1 114 GRAVE SPRINGS 8550 9.8 9.4 104 10.4 9.6 108 HANSEN SAWMILL 8360 7.2 6.4 112 9.4 8.1 116 MIDDLE POWDER 7760 11.6 11.8 98 9.4 12.3 76 POWDER RIVER PASS 9480 12.6 10.9 116 14.7 12.3 120 SUCKER CREEK 8880 14.4 11.8 122 16.2 13.5 120 TIE CREEK 6870 7.6 5.9 129 11.7 9.8 119 ----- ----- Basin wide percent of average 110 114 BELLE FOURCHE BLIND PARK 6890 7.7 8.7 89 10.5 11.0 95 COLE CANYON 5910 6.0 6.8 88 7.6 6.7 113 NORTH RAPID CREEK 6130 8.3 8.2 101 8.6 8.6 100 ----- ----- Basin wide percent of average 93 102 UPPER N. PLATTE RIVER COLUMBINE 9160 26.9 25.0 108 27.9 25.2 111 DIVIDE PEAK 8880 23.1 19.9 116 22.9 20.7 111 ELK RIVER 8700 27.0 19.5 138 23.3 19.6 119 JOE WRIGHT 10120 -M 21.3 * -M 24.7 * NORTH FRENCH CREEK 10130 30.7 29.3 105 29.3 24.6 119 OLD BATTLE 10000 33.3 32.3 103 39.3 34.6 114 SAGE CREEK BASIN 7850 18.0 11.5 157 17.7 12.0 148 SOUTH BRUSH CREEK 8440 14.2 13.1 108 16.8 16.3 103 TOWER 10500 43.1 45.6 95 33.4 38.4 87 WEBBER SPRINGS 9250 26.3 26.3 100 30.0 26.7 112 WILLOW CREEK PASS 9540 15.9 12.0 132 15.6 12.8 122 ----- ----- Basin wide percent of average 110 111 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 21.4 23.7 90 21.9 22.0 100 CASPER MTN. 7900 13.0 14.4 90 13.9 14.3 97 DEADMAN HILL 10220 17.7 16.3 109 18.3 16.8 109 DEER PARK 9700 15.7 17.0 92 20.2 21.9 92 LAPRELE CREEK 8375 8.1 10.9 74 11.1 12.5 89 RENO HILL 8400 13.7 14.2 96 15.4 14.8 104 ROACH 9700 19.4 17.0 114 22.1 18.6 119 SAND LAKE 10050 28.1 32.5 86 27.8 24.0 116 SOUTH PASS 9040 14.7 16.7 88 17.6 18.5 95 WINDY PEAK 7900 8.6 8.1 106 10.0 10.5 95 ----- ----- Basin wide percent of average 94 103 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 16.8 11.1 151 17.0 15.8 108 DIVIDE PEAK 8880 23.1 19.9 116 22.9 20.7 111 OLD BATTLE 10000 33.3 32.3 103 39.3 34.6 114 SANDSTONE RS 8150 18.2 14.9 122 21.7 18.7 116 WHISKEY PARK 8950 33.0 30.3 109 34.3 28.7 120 ----- ----- Basin wide percent of average 115 114 UPPER GREEN RIVER BIG SANDY OPENING 9080 13.6 14.6 93 13.5 13.4 101 BLIND BULL SUM 8650 26.1 28.2 93 18.6 22.4 83 EAST RIM DIVIDE 7930 9.7 13.2 73 11.7 12.1 97 ELKHART PARK G.S. 9400 11.2 13.5 83 11.9 13.4 89 GROS VENTRE SUMMIT 8750 13.2 14.3 92 14.4 13.0 111 GUNSIGHT PASS 9820 12.6 -M * 14.7 -M * KENDALL R.S. 7740 12.8 14.6 88 14.3 14.7 97 LOOMIS PARK 8240 16.9 17.5 97 18.3 17.5 105 NEW FORK LAKE 8340 9.9 11.3 88 9.5 11.4 83 SNIDER BASIN 8060 14.0 14.7 95 14.8 16.2 91 SPRING CREEK DIVIDE 9000 23.2 26.8 87 24.3 26.6 91 TRIPLE PEAK 8500 26.3 25.1 105 29.3 24.9 118 ----- ----- Basin wide percent of average 91 97 LOWER GREEN RIVER HAMS FORK 7840 12.6 12.1 104 10.6 12.3 86 HEWINTA 9519 16.2 12.0 135 17.0 14.6 116 HICKERSON PARK 9145 7.8 7.6 103 10.1 7.9 128 HOLE-IN-ROCK 9150 6.8 7.1 96 10.5 7.4 142 INDIAN CREEK 9425 26.4 28.1 94 -M 25.6 * KELLEY R.S. 8180 15.6 17.0 92 18.4 20.4 90 STEEL CREEK PARK 10200 15.8 15.8 100 18.7 16.2 115 ----- ----- Basin wide percent of average 102 108 UPPER BEAR RIVER BUG LAKE 7950 18.3 21.1 87 17.1 19.4 88 HAYDEN FORK 9212 20.2 16.5 122 23.1 21.0 110 KELLEY R.S. 8180 15.6 17.0 92 18.4 20.4 90 LILY LAKE 9156 15.3 13.3 115 17.7 17.5 101 MONTE CRISTO 8960 28.9 30.0 96 26.1 25.6 102 SALT RIVER SUMMIT 7760 13.8 14.6 95 16.1 18.9 85 TRIAL LAKE 9992 22.3 25.2 88 23.8 25.0 95 ----- ----- Basin wide percent of average 98 96 ----------------------------------------------------------------------------- -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.