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 WEDNESDAY: APRIL 2 , 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 21.8 * COTTONWOOD CREEK 7670 26.0 24.2 107 26.0 27.9 93 GRAND TARGHEE 9260 49.9 -M * 34.8 -M * GRANITE CREEK 6770 19.3 18.6 104 24.1 20.2 119 GRASSY LAKE 7265 37.5 36.3 103 43.7 36.6 119 GROS VENTRE SUMMIT 8750 13.2 14.4 92 14.5 13.1 111 GUNSIGHT PASS 9820 12.7 -M * 14.8 -M * LEWIS LAKE DIVIDE 7850 36.4 36.0 101 38.0 37.3 102 PHILLIPS BENCH 8200 34.5 29.4 117 35.2 29.5 119 SALT RIVER SUMMIT 7760 14.1 14.7 96 16.4 19.1 86 SNAKE RIVER STATION 6920 20.9 19.2 109 28.4 22.6 126 SPRING CREEK DIVIDE 9000 23.3 27.1 86 24.5 26.9 91 THUMB DIVIDE 7980 19.5 19.3 101 21.3 19.2 111 TOGWOTEE PASS 9580 28.1 25.3 111 30.2 25.0 121 TWO OCEAN PLATEAU 9240 38.1 28.6 133 -M 28.1 * WILLOW CREEK 8380 34.2 30.8 111 -M 32.7 * ----- ----- Basin wide percent of average 107 109 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 26.0 23.7 110 24.7 20.4 121 BLACK BEAR 8170 47.3 39.8 119 41.8 41.1 102 CANYON 7870 18.3 13.9 132 21.5 15.7 137 FISHER CREEK 9100 42.7 35.5 120 38.6 37.0 104 MADISON PLATEAU 7750 30.8 25.5 121 32.8 27.2 121 NORTHEAST ENTRANCE 7350 11.0 11.3 97 14.2 12.9 110 PARKER PEAK 9400 27.5 22.0 125 -M 16.5 * SYLVAN LAKE 8420 22.3 22.9 97 26.8 21.2 126 THUMB DIVIDE 7980 19.5 19.3 101 21.3 19.2 111 TWO OCEAN PLATEAU 9240 38.1 28.6 133 -M 28.1 * WHISKEY CREEK 6800 19.3 17.5 110 25.3 21.3 119 WHITE MILL 8700 28.9 24.7 117 -M 27.4 * WOLVERINE 7650 11.7 11.7 100 14.6 13.0 112 ----- ----- Basin wide percent of average 116 114 WIND RIVER BURROUGHS CREEK 8750 16.6 14.8 112 19.4 16.5 118 COLD SPRINGS 9630 7.0 9.0 78 10.2 10.8 94 DEER PARK 9700 15.8 17.3 91 20.4 22.2 92 HOBBS PARK 10100 14.4 15.3 94 14.5 13.0 112 LITTLE WARM 9370 10.4 12.1 86 14.1 13.6 104 SOUTH PASS 9040 14.7 16.9 87 17.7 18.7 95 ST. LAWRENCE ALT 8620 6.9 7.4 93 8.5 9.0 94 TOGWOTEE PASS 9580 28.1 25.3 111 30.2 25.0 121 TOWNSEND CREEK 8700 8.9 9.0 99 12.4 11.8 105 ----- ----- Basin wide percent of average 97 105 BIGHORN BASIN BALD MTN. 9380 17.1 20.0 86 15.6 17.6 89 BEAR TRAP MEADOW 8200 9.5 5.2 183 9.7 8.4 115 BLACKWATER 9780 26.6 24.9 107 24.1 20.8 116 BONE SPRINGS DIV 9350 17.9 16.5 108 17.8 14.8 120 EVENING STAR 9200 31.3 30.2 104 34.3 25.6 134 GRAVE SPRINGS 8550 10.3 9.5 108 10.8 9.8 110 KIRWIN 9550 12.6 11.5 110 14.8 11.4 130 MARQUETTE 8760 7.3 9.1 80 10.1 9.9 102 MIDDLE POWDER 7760 12.0 11.9 101 9.7 12.5 78 OWL CREEK 8975 5.9 5.6 105 7.1 6.0 118 POWDER RIVER PASS 9480 12.8 11.0 116 14.8 12.5 118 SHELL CREEK 9580 16.1 14.9 108 15.5 13.5 115 SYLVAN LAKE 8420 22.3 22.9 97 26.8 21.2 126 SYLVAN ROAD 7120 13.5 12.9 105 22.0 17.9 123 TIMBER CREEK 7950 4.4 5.8 76 8.2 7.5 109 YOUNTS PEAK 8350 17.8 17.4 102 18.3 16.4 112 ----- ----- Basin wide percent of average 104 115 SHOSHONE RIVER BLACKWATER 9780 26.6 24.9 107 24.1 20.8 116 EVENING STAR 9200 31.3 30.2 104 34.3 25.6 134 KIRWIN 9550 12.6 11.5 110 14.8 11.4 130 MARQUETTE 8760 7.3 9.1 80 10.1 9.9 102 SYLVAN LAKE 8420 22.3 22.9 97 26.8 21.2 126 SYLVAN ROAD 7120 13.5 12.9 105 22.0 17.9 123 YOUNTS PEAK 8350 17.8 17.4 102 18.3 16.4 112 ----- ----- Basin wide percent of average 102 122 POWDER-TONGUE BEAR TRAP MEADOW 8200 9.5 5.2 183 9.7 8.4 115 BIG GOOSE 7990 9.4 10.8 87 12.3 8.6 143 BONE SPRINGS DIV 9350 17.9 16.5 108 17.8 14.8 120 BURGESS JUNCTION 7880 12.5 11.8 106 13.9 12.3 113 CLOUD PEAK RESERVOIR 9860 15.9 13.6 117 15.5 13.0 119 DOME LAKE 8880 11.9 12.7 94 15.2 13.3 114 GRAVE SPRINGS 8550 10.3 9.5 108 10.8 9.8 110 HANSEN SAWMILL 8360 7.4 6.5 114 9.6 8.3 116 MIDDLE POWDER 7760 12.0 11.9 101 9.7 12.5 78 POWDER RIVER PASS 9480 12.8 11.0 116 14.8 12.5 118 SUCKER CREEK 8880 14.7 11.9 124 16.5 13.7 120 TIE CREEK 6870 7.9 6.1 130 12.0 10.0 120 ----- ----- Basin wide percent of average 112 115 BELLE FOURCHE BLIND PARK 6890 8.1 8.6 94 11.0 11.2 98 COLE CANYON 5910 6.3 6.9 91 8.1 6.7 121 NORTH RAPID CREEK 6130 8.4 8.4 100 8.7 8.6 101 ----- ----- Basin wide percent of average 95 105 UPPER N. PLATTE RIVER COLUMBINE 9160 27.2 25.1 108 28.1 25.5 110 DIVIDE PEAK 8880 23.4 20.1 116 23.7 20.9 113 ELK RIVER 8700 27.1 19.7 138 23.5 19.8 119 JOE WRIGHT 10120 23.7 21.6 110 27.6 25.0 110 NORTH FRENCH CREEK 10130 31.4 29.8 105 30.0 24.9 120 OLD BATTLE 10000 34.1 32.6 105 39.7 34.9 114 SAGE CREEK BASIN 7850 17.9 11.7 153 18.0 12.1 149 SOUTH BRUSH CREEK 8440 14.6 13.2 111 17.1 16.6 103 TOWER 10500 43.6 46.1 95 -M 38.8 * WEBBER SPRINGS 9250 26.9 26.4 102 30.5 27.0 113 WILLOW CREEK PASS 9540 16.0 12.2 131 15.7 13.0 121 ----- ----- Basin wide percent of average 111 116 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 21.8 24.1 90 22.3 22.3 100 CASPER MTN. 7900 13.3 14.7 90 14.2 14.6 97 DEADMAN HILL 10220 17.8 16.6 107 18.4 17.1 108 DEER PARK 9700 15.8 17.3 91 20.4 22.2 92 LAPRELE CREEK 8375 8.5 11.0 77 11.3 12.7 89 RENO HILL 8400 14.0 14.4 97 15.9 15.1 105 ROACH 9700 19.6 17.3 113 22.2 18.8 118 SAND LAKE 10050 28.7 32.9 87 28.2 24.4 116 SOUTH PASS 9040 14.7 16.9 87 17.7 18.7 95 WINDY PEAK 7900 8.8 8.2 107 10.2 10.6 96 ----- ----- Basin wide percent of average 94 102 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 17.0 10.9 156 17.2 16.0 108 DIVIDE PEAK 8880 23.4 20.1 116 23.7 20.9 113 OLD BATTLE 10000 34.1 32.6 105 39.7 34.9 114 SANDSTONE RS 8150 18.5 14.7 126 21.9 18.9 116 WHISKEY PARK 8950 33.9 30.5 111 34.3 29.0 118 ----- ----- Basin wide percent of average 117 114 UPPER GREEN RIVER BIG SANDY OPENING 9080 13.6 14.7 93 13.5 13.5 100 BLIND BULL SUM 8650 26.4 28.4 93 18.7 22.6 83 EAST RIM DIVIDE 7930 9.7 13.4 72 11.8 12.2 97 ELKHART PARK G.S. 9400 11.3 13.6 83 12.1 13.5 90 GROS VENTRE SUMMIT 8750 13.2 14.4 92 14.5 13.1 111 GUNSIGHT PASS 9820 12.7 -M * 14.8 -M * KENDALL R.S. 7740 12.9 14.5 89 14.5 14.8 98 LOOMIS PARK 8240 17.0 17.5 97 18.5 17.7 105 NEW FORK LAKE 8340 10.0 11.4 88 9.8 11.5 85 SNIDER BASIN 8060 14.1 14.8 95 14.9 16.4 91 SPRING CREEK DIVIDE 9000 23.3 27.1 86 24.5 26.9 91 TRIPLE PEAK 8500 26.5 25.3 105 29.5 25.2 117 ----- ----- Basin wide percent of average 91 97 LOWER GREEN RIVER HAMS FORK 7840 12.7 11.9 107 10.7 12.4 86 HEWINTA 9519 16.4 12.2 134 17.2 14.8 116 HICKERSON PARK 9145 8.0 7.8 103 10.1 8.0 126 HOLE-IN-ROCK 9150 6.9 7.2 96 10.5 7.6 138 INDIAN CREEK 9425 26.7 28.4 94 -M 25.9 * KELLEY R.S. 8180 15.6 17.2 91 18.4 20.7 89 STEEL CREEK PARK 10200 16.1 16.0 101 18.9 16.5 115 ----- ----- Basin wide percent of average 102 107 UPPER BEAR RIVER BUG LAKE 7950 18.4 21.3 86 17.3 19.5 89 HAYDEN FORK 9212 20.6 16.7 123 23.6 21.3 111 KELLEY R.S. 8180 15.6 17.2 91 18.4 20.7 89 LILY LAKE 9156 15.5 13.7 113 18.1 17.7 102 MONTE CRISTO 8960 29.5 30.2 98 26.5 25.9 102 SALT RIVER SUMMIT 7760 14.1 14.7 96 16.4 19.1 86 TRIAL LAKE 9992 22.7 25.4 89 24.3 25.3 96 ----- ----- Basin wide percent of average 98 97 ----------------------------------------------------------------------------- -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.