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 THURSDAY: MARCH 27 , 2008 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 17.7 18.1 98 26.7 21.2 126 COTTONWOOD CREEK 7670 25.0 23.6 106 25.5 27.0 94 GRAND TARGHEE 9260 48.3 -M * 34.1 -M * GRANITE CREEK 6770 18.4 18.7 98 23.3 19.8 118 GRASSY LAKE 7265 36.0 35.3 102 -M 35.6 * GROS VENTRE SUMMIT 8750 12.9 14.0 92 14.0 12.7 110 GUNSIGHT PASS 9820 12.4 -M * 14.3 -M * LEWIS LAKE DIVIDE 7850 34.7 35.1 99 37.5 36.4 103 PHILLIPS BENCH 8200 33.2 28.5 116 34.5 28.7 120 SALT RIVER SUMMIT 7760 13.7 14.3 96 15.8 18.5 85 SNAKE RIVER STATION 6920 20.4 19.1 107 27.0 22.0 123 SPRING CREEK DIVIDE 9000 23.0 26.2 88 23.9 26.1 92 THUMB DIVIDE 7980 17.9 18.9 95 20.1 18.6 108 TOGWOTEE PASS 9580 27.1 24.5 111 29.4 24.2 121 TWO OCEAN PLATEAU 9240 -M 27.6 * -M 27.3 * WILLOW CREEK 8380 32.4 30.0 108 36.6 31.7 115 ----- ----- Basin wide percent of average 102 110 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 25.1 23.1 109 23.8 19.8 120 BLACK BEAR 8170 44.5 38.7 115 39.5 39.8 99 CANYON 7870 17.0 13.5 126 20.1 15.2 132 FISHER CREEK 9100 40.5 34.5 117 36.7 35.9 102 MADISON PLATEAU 7750 29.1 24.7 118 31.3 26.3 119 NORTHEAST ENTRANCE 7350 10.1 11.2 90 13.3 12.5 106 PARKER PEAK 9400 26.2 21.3 123 24.0 16.0 150 SYLVAN LAKE 8420 21.4 22.2 96 26.1 20.6 127 THUMB DIVIDE 7980 17.9 18.9 95 20.1 18.6 108 TWO OCEAN PLATEAU 9240 -M 27.6 * -M 27.3 * WHISKEY CREEK 6800 18.1 16.9 107 24.3 20.7 117 WHITE MILL 8700 27.3 23.9 114 26.6 26.6 100 WOLVERINE 7650 11.1 11.5 97 13.7 12.6 109 ----- ----- Basin wide percent of average 111 113 WIND RIVER BURROUGHS CREEK 8750 16.1 14.5 111 18.9 15.9 119 COLD SPRINGS 9630 6.8 8.7 78 10.0 10.2 98 DEER PARK 9700 15.4 16.6 93 19.9 21.3 93 HOBBS PARK 10100 13.9 14.4 97 14.2 12.3 115 LITTLE WARM 9370 9.9 11.6 85 13.6 13.0 105 SOUTH PASS 9040 14.3 16.3 88 17.1 18.0 95 ST. LAWRENCE ALT 8620 6.9 7.0 99 8.3 8.5 98 TOGWOTEE PASS 9580 27.1 24.5 111 29.4 24.2 121 TOWNSEND CREEK 8700 8.8 8.3 106 12.0 11.1 108 ----- ----- Basin wide percent of average 98 107 BIGHORN BASIN BALD MTN. 9380 16.5 19.1 86 15.1 16.9 89 BEAR TRAP MEADOW 8200 9.0 5.2 173 9.1 7.9 115 BLACKWATER 9780 25.3 24.0 105 23.1 20.1 115 BONE SPRINGS DIV 9350 17.1 15.8 108 17.1 14.1 121 EVENING STAR 9200 29.9 29.3 102 33.1 24.9 133 GRAVE SPRINGS 8550 9.7 9.0 108 10.2 9.4 109 KIRWIN 9550 12.1 11.0 110 14.1 10.9 129 MARQUETTE 8760 6.6 8.6 77 9.8 9.3 105 MIDDLE POWDER 7760 11.4 11.3 101 9.2 11.9 77 OWL CREEK 8975 5.6 5.3 106 6.6 5.6 118 POWDER RIVER PASS 9480 12.3 10.5 117 14.5 11.9 122 SHELL CREEK 9580 15.7 14.3 110 15.1 12.9 117 SYLVAN LAKE 8420 21.4 22.2 96 26.1 20.6 127 SYLVAN ROAD 7120 12.4 12.6 98 21.0 17.4 121 TIMBER CREEK 7950 4.3 5.4 80 7.9 7.0 113 YOUNTS PEAK 8350 17.3 16.9 102 18.0 15.9 113 ----- ----- Basin wide percent of average 103 115 SHOSHONE RIVER BLACKWATER 9780 25.3 24.0 105 23.1 20.1 115 EVENING STAR 9200 29.9 29.3 102 33.1 24.9 133 KIRWIN 9550 12.1 11.0 110 14.1 10.9 129 MARQUETTE 8760 6.6 8.6 77 9.8 9.3 105 SYLVAN LAKE 8420 21.4 22.2 96 26.1 20.6 127 SYLVAN ROAD 7120 12.4 12.6 98 21.0 17.4 121 YOUNTS PEAK 8350 17.3 16.9 102 18.0 15.9 113 ----- ----- Basin wide percent of average 100 122 POWDER-TONGUE BEAR TRAP MEADOW 8200 9.0 5.2 173 9.1 7.9 115 BIG GOOSE 7990 8.9 10.0 89 11.8 8.2 144 BONE SPRINGS DIV 9350 17.1 15.8 108 17.1 14.1 121 BURGESS JUNCTION 7880 12.2 11.2 109 13.6 11.7 116 CLOUD PEAK RESERVOIR 9860 15.4 12.8 120 15.2 12.3 124 DOME LAKE 8880 11.4 11.9 96 14.6 12.6 116 GRAVE SPRINGS 8550 9.7 9.0 108 10.2 9.4 109 HANSEN SAWMILL 8360 7.1 6.3 113 9.4 7.8 121 MIDDLE POWDER 7760 11.4 11.3 101 9.2 11.9 77 POWDER RIVER PASS 9480 12.3 10.5 117 14.5 11.9 122 SUCKER CREEK 8880 14.2 11.3 126 16.0 13.0 123 TIE CREEK 6870 7.5 5.7 132 11.6 9.5 122 ----- ----- Basin wide percent of average 113 117 BELLE FOURCHE BLIND PARK 6890 7.1 8.5 84 10.0 10.8 93 COLE CANYON 5910 5.5 6.7 82 7.1 6.5 109 NORTH RAPID CREEK 6130 8.2 8.0 102 8.3 8.4 99 ----- ----- Basin wide percent of average 90 99 UPPER N. PLATTE RIVER COLUMBINE 9160 25.9 24.8 104 26.9 24.7 109 DIVIDE PEAK 8880 21.4 19.4 110 21.8 20.3 107 ELK RIVER 8700 25.7 19.1 135 22.3 19.1 117 JOE WRIGHT 10120 21.8 20.7 105 25.3 24.1 105 NORTH FRENCH CREEK 10130 29.0 28.3 102 27.8 24.0 116 OLD BATTLE 10000 31.1 31.5 99 36.9 33.9 109 SAGE CREEK BASIN 7850 17.1 11.3 151 16.9 11.8 143 SOUTH BRUSH CREEK 8440 13.0 12.8 102 16.0 15.9 101 TOWER 10500 41.0 44.5 92 -M 37.6 * WEBBER SPRINGS 9250 24.6 26.1 94 28.2 26.1 108 WILLOW CREEK PASS 9540 14.7 11.6 127 14.5 12.4 117 ----- ----- Basin wide percent of average 106 111 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 20.3 23.0 88 20.8 21.4 97 CASPER MTN. 7900 12.7 13.9 91 13.6 13.8 99 DEADMAN HILL 10220 16.2 15.8 103 16.5 16.4 101 DEER PARK 9700 15.4 16.6 93 19.9 21.3 93 LAPRELE CREEK 8375 7.6 10.8 70 10.3 12.2 84 RENO HILL 8400 13.0 13.6 96 14.8 14.3 103 ROACH 9700 18.0 16.6 108 20.7 18.1 114 SAND LAKE 10050 26.5 31.6 84 26.2 23.4 112 SOUTH PASS 9040 14.3 16.3 88 17.1 18.0 95 WINDY PEAK 7900 7.8 7.9 99 9.1 10.2 89 ----- ----- Basin wide percent of average 91 100 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 16.0 11.4 140 15.8 15.4 103 DIVIDE PEAK 8880 21.4 19.4 110 21.8 20.3 107 OLD BATTLE 10000 31.1 31.5 99 36.9 33.9 109 SANDSTONE RS 8150 16.0 15.0 107 20.1 18.4 109 WHISKEY PARK 8950 30.9 29.8 104 34.1 28.0 122 ----- ----- Basin wide percent of average 108 111 UPPER GREEN RIVER BIG SANDY OPENING 9080 13.4 14.3 94 13.4 13.1 102 BLIND BULL SUM 8650 25.4 27.7 92 18.0 21.9 82 EAST RIM DIVIDE 7930 9.4 13.0 72 11.5 11.9 97 ELKHART PARK G.S. 9400 10.9 13.2 83 11.5 13.0 88 GROS VENTRE SUMMIT 8750 12.9 14.0 92 14.0 12.7 110 GUNSIGHT PASS 9820 12.4 -M * 14.3 -M * KENDALL R.S. 7740 12.5 14.6 86 14.0 14.4 97 LOOMIS PARK 8240 16.4 17.3 95 17.9 17.2 104 NEW FORK LAKE 8340 9.6 11.1 86 9.3 11.1 84 SNIDER BASIN 8060 13.7 14.5 94 14.5 15.9 91 SPRING CREEK DIVIDE 9000 23.0 26.2 88 23.9 26.1 92 TRIPLE PEAK 8500 25.5 24.7 103 28.5 24.4 117 ----- ----- Basin wide percent of average 91 97 LOWER GREEN RIVER HAMS FORK 7840 12.3 12.3 100 10.3 12.0 86 HEWINTA 9519 15.2 11.6 131 16.6 14.2 117 HICKERSON PARK 9145 7.6 7.2 106 10.0 7.7 130 HOLE-IN-ROCK 9150 6.7 6.9 97 10.2 7.2 142 INDIAN CREEK 9425 25.4 27.4 93 -M 24.9 * KELLEY R.S. 8180 15.2 16.7 91 18.0 20.0 90 STEEL CREEK PARK 10200 15.4 15.4 100 18.2 15.7 116 ----- ----- Basin wide percent of average 100 108 UPPER BEAR RIVER BUG LAKE 7950 17.8 20.7 86 16.8 18.9 89 HAYDEN FORK 9212 19.4 16.2 120 22.7 20.5 111 KELLEY R.S. 8180 15.2 16.7 91 18.0 20.0 90 LILY LAKE 9156 14.8 12.8 116 17.3 17.0 102 MONTE CRISTO 8960 28.0 29.5 95 25.7 25.0 103 SALT RIVER SUMMIT 7760 13.7 14.3 96 15.8 18.5 85 TRIAL LAKE 9992 21.5 24.7 87 23.5 24.5 96 ----- ----- Basin wide percent of average 97 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.