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: APRIL 1 , 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 18.1 * -M 21.7 * COTTONWOOD CREEK 7670 25.9 24.2 107 25.9 27.8 93 GRAND TARGHEE 9260 49.7 -M * 34.7 -M * GRANITE CREEK 6770 19.2 18.6 103 24.0 20.1 119 GRASSY LAKE 7265 37.4 36.1 104 43.6 36.4 120 GROS VENTRE SUMMIT 8750 13.1 14.4 91 14.4 13.0 111 GUNSIGHT PASS 9820 12.6 -M * 14.7 -M * LEWIS LAKE DIVIDE 7850 36.0 35.8 101 -M 37.2 * PHILLIPS BENCH 8200 34.4 29.2 118 35.1 29.4 119 SALT RIVER SUMMIT 7760 14.0 14.6 96 16.3 19.0 86 SNAKE RIVER STATION 6920 20.7 19.2 108 28.3 22.5 126 SPRING CREEK DIVIDE 9000 23.4 26.9 87 24.4 26.8 91 THUMB DIVIDE 7980 19.4 19.2 101 21.3 19.1 112 TOGWOTEE PASS 9580 28.1 25.2 112 30.1 24.9 121 TWO OCEAN PLATEAU 9240 -M 28.4 * -M 28.0 * WILLOW CREEK 8380 34.1 30.6 111 38.8 32.6 119 ----- ----- Basin wide percent of average 104 111 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 26.0 23.6 110 24.7 20.3 122 BLACK BEAR 8170 47.2 39.8 119 41.8 40.9 102 CANYON 7870 18.3 13.9 132 21.4 15.6 137 FISHER CREEK 9100 42.6 35.4 120 38.6 36.8 105 MADISON PLATEAU 7750 30.7 25.5 120 32.8 27.1 121 NORTHEAST ENTRANCE 7350 11.0 11.3 97 14.1 12.8 110 PARKER PEAK 9400 27.4 21.9 125 25.0 16.4 152 SYLVAN LAKE 8420 22.2 22.8 97 26.7 21.1 127 THUMB DIVIDE 7980 19.4 19.2 101 21.3 19.1 112 TWO OCEAN PLATEAU 9240 -M 28.4 * -M 28.0 * WHISKEY CREEK 6800 19.3 17.4 111 25.3 21.2 119 WHITE MILL 8700 28.8 24.6 117 -M 27.3 * WOLVERINE 7650 11.7 11.6 101 14.4 12.9 112 ----- ----- Basin wide percent of average 114 117 WIND RIVER BURROUGHS CREEK 8750 16.5 14.8 111 19.3 16.4 118 COLD SPRINGS 9630 7.0 9.0 78 10.2 10.7 95 DEER PARK 9700 15.7 17.1 92 20.2 22.1 91 HOBBS PARK 10100 14.3 15.1 95 14.5 12.9 112 LITTLE WARM 9370 10.4 12.0 87 14.1 13.5 104 SOUTH PASS 9040 14.6 16.7 87 17.7 18.6 95 ST. LAWRENCE ALT 8620 6.9 7.4 93 8.5 8.9 96 TOGWOTEE PASS 9580 28.1 25.2 112 30.1 24.9 121 TOWNSEND CREEK 8700 8.8 8.8 100 12.4 11.7 106 ----- ----- Basin wide percent of average 97 105 BIGHORN BASIN BALD MTN. 9380 17.1 19.9 86 15.5 17.5 89 BEAR TRAP MEADOW 8200 9.5 5.2 183 9.6 8.3 116 BLACKWATER 9780 26.5 24.8 107 24.1 20.7 116 BONE SPRINGS DIV 9350 17.8 16.4 109 17.8 14.7 121 EVENING STAR 9200 31.1 30.1 103 34.2 25.5 134 GRAVE SPRINGS 8550 10.2 9.4 109 10.8 9.7 111 KIRWIN 9550 12.5 11.5 109 14.6 11.3 129 MARQUETTE 8760 7.2 9.0 80 10.3 9.8 105 MIDDLE POWDER 7760 12.0 11.8 102 9.7 12.4 78 OWL CREEK 8975 5.8 5.6 104 7.1 5.9 120 POWDER RIVER PASS 9480 12.7 10.9 117 14.8 12.4 119 SHELL CREEK 9580 16.0 14.9 107 15.4 13.4 115 SYLVAN LAKE 8420 22.2 22.8 97 26.7 21.1 127 SYLVAN ROAD 7120 13.6 12.9 105 22.1 17.8 124 TIMBER CREEK 7950 4.4 5.8 76 8.2 7.4 111 YOUNTS PEAK 8350 17.7 17.3 102 18.2 16.3 112 ----- ----- Basin wide percent of average 104 116 SHOSHONE RIVER BLACKWATER 9780 26.5 24.8 107 24.1 20.7 116 EVENING STAR 9200 31.1 30.1 103 34.2 25.5 134 KIRWIN 9550 12.5 11.5 109 14.6 11.3 129 MARQUETTE 8760 7.2 9.0 80 10.3 9.8 105 SYLVAN LAKE 8420 22.2 22.8 97 26.7 21.1 127 SYLVAN ROAD 7120 13.6 12.9 105 22.1 17.8 124 YOUNTS PEAK 8350 17.7 17.3 102 18.2 16.3 112 ----- ----- Basin wide percent of average 102 123 POWDER-TONGUE BEAR TRAP MEADOW 8200 9.5 5.2 183 9.6 8.3 116 BIG GOOSE 7990 9.3 10.7 87 12.2 8.5 144 BONE SPRINGS DIV 9350 17.8 16.4 109 17.8 14.7 121 BURGESS JUNCTION 7880 12.5 11.7 107 13.9 12.2 114 CLOUD PEAK RESERVOIR 9860 15.8 13.5 117 15.5 12.9 120 DOME LAKE 8880 11.9 12.6 94 15.1 13.2 114 GRAVE SPRINGS 8550 10.2 9.4 109 10.8 9.7 111 HANSEN SAWMILL 8360 7.4 6.5 114 9.6 8.2 117 MIDDLE POWDER 7760 12.0 11.8 102 9.7 12.4 78 POWDER RIVER PASS 9480 12.7 10.9 117 14.8 12.4 119 SUCKER CREEK 8880 14.6 11.8 124 16.3 13.6 120 TIE CREEK 6870 7.8 6.1 128 12.0 9.9 121 ----- ----- Basin wide percent of average 112 116 BELLE FOURCHE BLIND PARK 6890 8.1 8.7 93 11.0 11.1 99 COLE CANYON 5910 6.3 6.9 91 8.0 6.7 119 NORTH RAPID CREEK 6130 8.6 8.3 104 8.9 8.6 103 ----- ----- Basin wide percent of average 96 106 UPPER N. PLATTE RIVER COLUMBINE 9160 26.7 25.0 107 27.8 25.3 110 DIVIDE PEAK 8880 23.3 20.0 116 23.0 20.8 111 ELK RIVER 8700 27.2 19.6 139 23.3 19.7 118 JOE WRIGHT 10120 23.5 21.5 109 27.5 24.9 110 NORTH FRENCH CREEK 10130 31.2 29.5 106 29.7 24.8 120 OLD BATTLE 10000 33.8 32.4 104 39.5 34.8 114 SAGE CREEK BASIN 7850 18.0 11.6 155 17.9 12.1 148 SOUTH BRUSH CREEK 8440 14.5 13.2 110 16.9 16.4 103 TOWER 10500 43.3 45.8 95 33.4 38.6 87 WEBBER SPRINGS 9250 26.6 26.4 101 30.3 26.8 113 WILLOW CREEK PASS 9540 16.0 12.1 132 15.8 12.9 122 ----- ----- Basin wide percent of average 111 111 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 21.5 23.9 90 22.2 22.1 100 CASPER MTN. 7900 13.2 14.6 90 14.1 14.4 98 DEADMAN HILL 10220 17.7 16.4 108 18.4 17.0 108 DEER PARK 9700 15.7 17.1 92 20.2 22.1 91 LAPRELE CREEK 8375 8.4 11.0 76 11.2 12.6 89 RENO HILL 8400 13.9 14.3 97 15.7 15.0 105 ROACH 9700 19.4 17.2 113 22.1 18.7 118 SAND LAKE 10050 28.4 32.7 87 27.9 24.2 115 SOUTH PASS 9040 14.6 16.7 87 17.7 18.6 95 WINDY PEAK 7900 8.7 8.1 107 10.1 10.6 95 ----- ----- Basin wide percent of average 94 102 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 16.9 11.0 154 17.0 15.9 107 DIVIDE PEAK 8880 23.3 20.0 116 23.0 20.8 111 OLD BATTLE 10000 33.8 32.4 104 39.5 34.8 114 SANDSTONE RS 8150 18.3 14.8 124 21.8 18.8 116 WHISKEY PARK 8950 33.7 30.4 111 34.2 28.8 119 ----- ----- Basin wide percent of average 116 114 UPPER GREEN RIVER BIG SANDY OPENING 9080 13.6 14.7 93 13.4 13.5 99 BLIND BULL SUM 8650 26.3 28.3 93 18.6 22.5 83 EAST RIM DIVIDE 7930 9.7 13.3 73 11.7 12.2 96 ELKHART PARK G.S. 9400 11.2 13.6 82 11.8 13.4 88 GROS VENTRE SUMMIT 8750 13.1 14.4 91 14.4 13.0 111 GUNSIGHT PASS 9820 12.6 -M * 14.7 -M * KENDALL R.S. 7740 12.8 14.6 88 14.4 14.7 98 LOOMIS PARK 8240 16.9 17.5 97 18.4 17.6 105 NEW FORK LAKE 8340 9.9 11.3 88 9.5 11.4 83 SNIDER BASIN 8060 14.1 14.7 96 14.9 16.3 91 SPRING CREEK DIVIDE 9000 23.4 26.9 87 24.4 26.8 91 TRIPLE PEAK 8500 26.5 25.2 105 29.5 25.1 118 ----- ----- Basin wide percent of average 91 97 LOWER GREEN RIVER HAMS FORK 7840 12.7 12.0 106 10.6 12.3 86 HEWINTA 9519 16.2 12.1 134 16.9 14.7 115 HICKERSON PARK 9145 7.5 7.7 97 9.6 8.0 120 HOLE-IN-ROCK 9150 6.9 7.2 96 10.4 7.5 139 INDIAN CREEK 9425 26.4 28.2 94 -M 25.7 * KELLEY R.S. 8180 15.6 17.1 91 18.4 20.6 89 STEEL CREEK PARK 10200 15.8 15.9 99 18.9 16.3 116 ----- ----- Basin wide percent of average 101 107 UPPER BEAR RIVER BUG LAKE 7950 18.3 21.2 86 16.9 19.5 87 HAYDEN FORK 9212 20.3 16.6 122 23.5 21.2 111 KELLEY R.S. 8180 15.6 17.1 91 18.4 20.6 89 LILY LAKE 9156 15.5 13.5 115 17.9 17.6 102 MONTE CRISTO 8960 29.4 30.1 98 26.3 25.7 102 SALT RIVER SUMMIT 7760 14.0 14.6 96 16.3 19.0 86 TRIAL LAKE 9992 22.4 25.3 89 24.1 25.2 96 ----- ----- 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.