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: MARCH 11 , 2008 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 15.3 17.0 90 22.6 19.7 115 COTTONWOOD CREEK 7670 20.9 20.6 101 21.9 24.5 89 GRAND TARGHEE 9260 41.6 -M * 28.0 -M * GRANITE CREEK 6770 15.1 17.4 87 20.4 18.4 111 GRASSY LAKE 7265 27.8 31.9 87 35.3 32.8 108 GROS VENTRE SUMMIT 8750 11.4 12.5 91 12.5 11.5 109 GUNSIGHT PASS 9820 10.7 -M * 12.5 -M * LEWIS LAKE DIVIDE 7850 27.3 31.9 86 31.7 33.5 95 PHILLIPS BENCH 8200 27.3 25.8 106 29.9 26.2 114 SALT RIVER SUMMIT 7760 11.8 13.0 91 13.7 16.8 82 SNAKE RIVER STATION 6920 15.3 17.8 86 23.2 20.5 113 SPRING CREEK DIVIDE 9000 19.2 23.8 81 19.9 23.8 84 THUMB DIVIDE 7980 14.6 16.9 86 17.1 17.1 100 TOGWOTEE PASS 9580 23.5 22.2 106 25.7 22.0 117 TWO OCEAN PLATEAU 9240 31.0 24.9 124 23.4 25.0 94 WILLOW CREEK 8380 27.5 27.3 101 33.0 28.8 115 ----- ----- Basin wide percent of average 95 103 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 22.2 21.4 104 21.0 18.2 115 BLACK BEAR 8170 40.3 35.6 113 -M 35.9 * CANYON 7870 14.9 12.4 120 18.4 13.9 132 FISHER CREEK 9100 36.7 31.7 116 -M 32.7 * MADISON PLATEAU 7750 26.2 22.7 115 28.9 23.7 122 NORTHEAST ENTRANCE 7350 -M 10.5 * -M 11.4 * PARKER PEAK 9400 22.4 19.6 114 -M 14.6 * SYLVAN LAKE 8420 18.3 20.1 91 22.9 19.0 121 THUMB DIVIDE 7980 14.6 16.9 86 17.1 17.1 100 TWO OCEAN PLATEAU 9240 31.0 24.9 124 23.4 25.0 94 WHISKEY CREEK 6800 16.4 15.7 104 22.8 18.7 122 WHITE MILL 8700 23.7 21.9 108 -M 24.2 * WOLVERINE 7650 9.0 11.3 80 11.5 11.8 97 ----- ----- Basin wide percent of average 108 113 WIND RIVER BURROUGHS CREEK 8750 13.4 13.4 100 16.3 14.6 112 COLD SPRINGS 9630 5.7 7.9 72 8.7 9.0 97 DEER PARK 9700 13.1 15.3 86 17.5 19.2 91 HOBBS PARK 10100 11.7 12.9 91 12.2 10.6 115 LITTLE WARM 9370 8.2 10.3 80 11.6 11.6 100 SOUTH PASS 9040 12.4 15.2 82 15.3 16.0 96 ST. LAWRENCE ALT 8620 6.1 6.4 95 7.5 7.5 100 TOGWOTEE PASS 9580 23.5 22.2 106 25.7 22.0 117 TOWNSEND CREEK 8700 7.7 7.5 103 10.9 9.6 114 ----- ----- Basin wide percent of average 92 105 BIGHORN BASIN BALD MTN. 9380 14.7 17.2 85 13.7 15.1 91 BEAR TRAP MEADOW 8200 7.5 4.8 156 7.7 6.9 112 BLACKWATER 9780 21.2 22.0 96 19.9 18.3 109 BONE SPRINGS DIV 9350 14.8 14.1 105 15.3 12.5 122 EVENING STAR 9200 25.4 26.8 95 -M 23.0 * GRAVE SPRINGS 8550 8.4 7.9 106 9.0 8.4 107 KIRWIN 9550 10.3 9.9 104 12.6 9.8 129 MARQUETTE 8760 4.8 7.4 65 8.4 8.0 105 MIDDLE POWDER 7760 9.9 9.8 101 8.1 10.4 78 OWL CREEK 8975 4.8 4.5 107 5.8 4.8 121 POWDER RIVER PASS 9480 10.7 9.4 114 12.8 10.7 120 SHELL CREEK 9580 13.8 12.6 110 13.3 11.5 116 SYLVAN LAKE 8420 18.3 20.1 91 22.9 19.0 121 SYLVAN ROAD 7120 10.0 12.0 83 18.7 16.3 115 TIMBER CREEK 7950 3.4 4.6 74 6.9 5.9 117 YOUNTS PEAK 8350 14.5 15.5 94 15.5 14.4 108 ----- ----- Basin wide percent of average 97 111 SHOSHONE RIVER BLACKWATER 9780 21.2 22.0 96 19.9 18.3 109 EVENING STAR 9200 25.4 26.8 95 -M 23.0 * KIRWIN 9550 10.3 9.9 104 12.6 9.8 129 MARQUETTE 8760 4.8 7.4 65 8.4 8.0 105 SYLVAN LAKE 8420 18.3 20.1 91 22.9 19.0 121 SYLVAN ROAD 7120 10.0 12.0 83 18.7 16.3 115 YOUNTS PEAK 8350 14.5 15.5 94 15.5 14.4 108 ----- ----- Basin wide percent of average 92 114 POWDER-TONGUE BEAR TRAP MEADOW 8200 7.5 4.8 156 7.7 6.9 112 BIG GOOSE 7990 7.2 8.4 86 10.1 7.2 140 BONE SPRINGS DIV 9350 14.8 14.1 105 15.3 12.5 122 BURGESS JUNCTION 7880 10.7 9.8 109 12.2 10.2 120 CLOUD PEAK RESERVOIR 9860 13.4 11.1 121 13.2 10.6 125 DOME LAKE 8880 9.2 10.3 89 12.6 11.0 115 GRAVE SPRINGS 8550 8.4 7.9 106 9.0 8.4 107 HANSEN SAWMILL 8360 5.4 5.6 96 7.7 6.8 113 MIDDLE POWDER 7760 9.9 9.8 101 8.1 10.4 78 POWDER RIVER PASS 9480 10.7 9.4 114 12.8 10.7 120 SUCKER CREEK 8880 12.2 9.9 123 14.3 11.4 125 TIE CREEK 6870 6.6 5.7 116 10.5 8.4 125 ----- ----- Basin wide percent of average 109 117 BELLE FOURCHE BLIND PARK 6890 6.8 8.0 85 9.6 9.9 97 COLE CANYON 5910 5.5 6.1 90 6.7 5.9 114 NORTH RAPID CREEK 6130 7.8 7.3 107 7.8 7.8 100 ----- ----- Basin wide percent of average 94 102 UPPER N. PLATTE RIVER COLUMBINE 9160 24.0 23.3 103 25.3 22.4 113 DIVIDE PEAK 8880 20.7 17.0 122 21.2 18.3 116 ELK RIVER 8700 22.9 17.3 132 21.4 17.3 124 JOE WRIGHT 10120 20.7 18.5 112 24.3 21.6 112 NORTH FRENCH CREEK 10130 27.2 24.7 110 26.6 21.7 123 OLD BATTLE 10000 29.2 28.4 103 33.4 30.6 109 SAGE CREEK BASIN 7850 16.3 9.9 165 16.6 10.6 157 SOUTH BRUSH CREEK 8440 12.5 11.2 112 15.7 14.2 111 TOWER 10500 38.1 40.2 95 30.8 34.2 90 WEBBER SPRINGS 9250 22.9 23.5 97 26.8 23.6 114 WILLOW CREEK PASS 9540 13.9 10.3 135 14.1 11.1 127 ----- ----- Basin wide percent of average 111 114 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 18.2 20.4 89 19.1 18.9 101 CASPER MTN. 7900 11.6 12.2 95 12.6 12.0 105 DEADMAN HILL 10220 15.1 13.9 109 15.7 14.4 109 DEER PARK 9700 13.1 15.3 86 17.5 19.2 91 LAPRELE CREEK 8375 6.6 9.7 68 9.3 10.8 86 RENO HILL 8400 11.8 11.5 103 13.6 12.4 110 ROACH 9700 17.0 14.9 114 19.6 16.1 122 SAND LAKE 10050 24.3 27.7 88 24.3 20.7 117 SOUTH PASS 9040 12.4 15.2 82 15.3 16.0 96 WINDY PEAK 7900 7.0 6.8 103 8.5 9.1 93 ----- ----- Basin wide percent of average 93 104 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 15.1 10.8 140 15.2 13.4 113 DIVIDE PEAK 8880 20.7 17.0 122 21.2 18.3 116 OLD BATTLE 10000 29.2 28.4 103 33.4 30.6 109 SANDSTONE RS 8150 16.0 13.7 117 19.6 16.8 117 WHISKEY PARK 8950 29.1 26.3 111 30.7 25.1 122 ----- ----- Basin wide percent of average 114 115 UPPER GREEN RIVER BIG SANDY OPENING 9080 11.2 13.0 86 11.3 12.1 93 BLIND BULL SUM 8650 21.3 25.0 85 15.8 20.1 79 EAST RIM DIVIDE 7930 7.6 11.8 64 9.7 10.9 89 ELKHART PARK G.S. 9400 9.7 12.0 81 10.5 11.7 90 GROS VENTRE SUMMIT 8750 11.4 12.5 91 12.5 11.5 109 GUNSIGHT PASS 9820 10.7 -M * 12.5 -M * KENDALL R.S. 7740 10.0 13.5 74 11.8 13.3 89 LOOMIS PARK 8240 13.6 15.7 87 15.3 15.8 97 NEW FORK LAKE 8340 8.2 10.2 80 8.3 10.2 81 SNIDER BASIN 8060 11.3 13.3 85 12.3 14.5 85 SPRING CREEK DIVIDE 9000 19.2 23.8 81 19.9 23.8 84 TRIPLE PEAK 8500 21.0 22.4 94 24.1 22.2 109 ----- ----- Basin wide percent of average 83 91 LOWER GREEN RIVER HAMS FORK 7840 10.5 11.9 88 8.7 11.0 79 HEWINTA 9519 12.4 10.0 124 14.8 12.5 118 HICKERSON PARK 9145 6.7 6.3 106 8.9 6.7 133 HOLE-IN-ROCK 9150 5.6 6.2 90 8.8 6.3 140 INDIAN CREEK 9425 20.3 24.3 84 -M 22.5 * KELLEY R.S. 8180 12.5 15.2 82 15.1 18.2 83 STEEL CREEK PARK 10200 13.3 13.7 97 16.6 13.9 119 ----- ----- Basin wide percent of average 93 106 UPPER BEAR RIVER BUG LAKE 7950 16.0 18.5 86 15.4 17.2 90 HAYDEN FORK 9212 17.8 14.4 124 21.2 18.3 116 KELLEY R.S. 8180 12.5 15.2 82 15.1 18.2 83 LILY LAKE 9156 13.4 11.6 116 15.9 15.2 105 MONTE CRISTO 8960 25.4 26.8 95 23.9 22.6 106 SALT RIVER SUMMIT 7760 11.8 13.0 91 13.7 16.8 82 TRIAL LAKE 9992 19.1 22.3 86 22.1 22.1 100 ----- ----- Basin wide percent of average 95 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.