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 28 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 21.5 18.1 119 23.6 21.3 111 COTTONWOOD CREEK 7670 27.2 23.8 114 34.3 27.1 127 GRAND TARGHEE 9260 46.7 -M * -M -M * GRANITE CREEK 6770 22.0 18.7 118 23.1 19.8 117 GRASSY LAKE 7265 39.0 35.5 110 39.7 35.8 111 GROS VENTRE SUMMIT 8750 14.8 14.1 105 14.2 12.8 111 GUNSIGHT PASS 9820 17.2 -M * 16.5 -M * LEWIS LAKE DIVIDE 7850 40.2 35.3 114 -M 36.5 * PHILLIPS BENCH 8200 32.2 28.7 112 31.9 28.8 111 SALT RIVER SUMMIT 7760 17.7 14.4 123 21.7 18.6 117 SNAKE RIVER STATION 6920 -M 19.1 * 25.8 22.1 117 SPRING CREEK DIVIDE 9000 34.6 26.4 131 31.8 26.2 121 THUMB DIVIDE 7980 22.1 19.0 116 20.2 18.7 108 TOGWOTEE PASS 9580 28.2 24.6 115 29.8 24.3 123 TWO OCEAN PLATEAU 9240 -M 27.7 * -M 27.5 * WILLOW CREEK 8380 36.0 30.1 120 39.5 31.9 124 ----- ----- Basin wide percent of average 116 117 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 25.8 23.2 111 24.8 19.9 125 BLACK BEAR 8170 47.2 39.0 121 43.4 40.0 109 CANYON 7870 17.3 13.7 126 18.3 15.3 120 FISHER CREEK 9100 40.9 34.7 118 39.2 36.0 109 MADISON PLATEAU 7750 29.9 25.0 120 31.5 26.4 119 NORTHEAST ENTRANCE 7350 14.1 11.3 125 15.2 12.5 122 PARKER PEAK 9400 28.6 21.5 133 24.7 16.0 154 SYLVAN LAKE 8420 24.3 22.4 108 27.8 20.7 134 THUMB DIVIDE 7980 22.1 19.0 116 20.2 18.7 108 TWO OCEAN PLATEAU 9240 -M 27.7 * -M 27.5 * WHISKEY CREEK 6800 20.7 17.1 121 23.6 20.8 113 WHITE MILL 8700 28.0 24.1 116 28.2 26.7 106 WOLVERINE 7650 14.6 11.5 127 14.4 12.7 113 ----- ----- Basin wide percent of average 119 117 WIND RIVER BURROUGHS CREEK 8750 14.8 14.6 101 15.6 16.0 98 CASTLE CREEK 8400 6.8 -M * 7.7 -M * COLD SPRINGS 9630 8.4 8.7 97 7.9 10.3 77 DEER PARK 9700 18.6 16.6 112 21.5 21.5 100 HOBBS PARK 10100 13.9 14.6 95 12.1 12.4 98 LITTLE WARM 9370 12.4 11.7 106 12.5 13.1 95 SOUTH PASS 9040 17.3 16.4 105 14.8 18.1 82 ST. LAWRENCE ALT 8620 4.6 7.1 65 6.6 8.6 77 TOGWOTEE PASS 9580 28.2 24.6 115 29.8 24.3 123 TOWNSEND CREEK 8700 8.0 8.5 94 10.4 11.2 93 ----- ----- Basin wide percent of average 103 97 BIGHORN BASIN BALD MTN. 9380 21.7 19.3 112 17.9 17.0 105 BEAR TRAP MEADOW 8200 8.0 5.2 154 7.8 8.0 98 BLACKWATER 9780 25.8 24.3 106 25.0 20.2 124 BONE SPRINGS DIV 9350 18.7 15.9 118 15.5 14.2 109 EVENING STAR 9200 31.1 29.5 105 32.9 25.0 132 GRAVE SPRINGS 8550 8.9 9.1 98 8.9 9.4 95 KIRWIN 9550 11.1 11.1 100 12.3 11.0 112 MARQUETTE 8760 2.8 -M * 6.0 9.4 64 MIDDLE POWDER 7760 10.2 11.4 89 11.1 12.0 93 OWL CREEK 8975 5.3 5.4 98 5.3 5.6 95 POWDER RIVER PASS 9480 13.4 10.6 126 15.5 12.0 129 SHELL CREEK 9580 16.3 14.4 113 14.8 13.0 114 SYLVAN LAKE 8420 24.3 22.4 108 27.8 20.7 134 SYLVAN ROAD 7120 16.1 12.7 127 20.3 17.5 116 TIMBER CREEK 7950 3.6 5.5 65 4.5 7.1 63 YOUNTS PEAK 8350 17.3 17.0 102 14.9 15.9 94 ----- ----- Basin wide percent of average 108 110 SHOSHONE RIVER BLACKWATER 9780 25.8 24.3 106 25.0 20.2 124 EVENING STAR 9200 31.1 29.5 105 32.9 25.0 132 KIRWIN 9550 11.1 11.1 100 12.3 11.0 112 MARQUETTE 8760 2.8 -M * 6.0 9.4 64 SYLVAN LAKE 8420 24.3 22.4 108 27.8 20.7 134 SYLVAN ROAD 7120 16.1 12.7 127 20.3 17.5 116 YOUNTS PEAK 8350 17.3 17.0 102 14.9 15.9 94 ----- ----- Basin wide percent of average 107 116 POWDER-TONGUE BEAR TRAP MEADOW 8200 8.0 5.2 154 7.8 8.0 98 BIG GOOSE 7990 8.3 10.1 82 9.9 8.2 121 BONE SPRINGS DIV 9350 18.7 15.9 118 15.5 14.2 109 BURGESS JUNCTION 7880 10.5 11.4 92 11.4 11.8 97 CLOUD PEAK RESERVOIR 9860 15.3 12.9 119 14.0 12.4 113 DOME LAKE 8880 13.3 12.0 111 13.0 12.7 102 GRAVE SPRINGS 8550 8.9 9.1 98 8.9 9.4 95 HANSEN SAWMILL 8360 6.7 6.3 106 7.4 7.9 94 LITTLE GOOSE 8870 9.3 -M * 13.6 -M * MIDDLE POWDER 7760 10.2 11.4 89 11.1 12.0 93 POWDER RIVER PASS 9480 13.4 10.6 126 15.5 12.0 129 SOLDIER PARK 8720 7.6 -M * 8.7 -M * SUCKER CREEK 8880 12.9 11.5 112 14.2 13.1 108 TIE CREEK 6870 6.5 5.7 114 9.9 9.6 103 ----- ----- Basin wide percent of average 109 106 BELLE FOURCHE BLIND PARK 6890 9.2 8.5 108 16.0 10.9 147 COLE CANYON 5910 7.9 6.7 118 11.6 6.5 178 NORTH RAPID CREEK 6130 8.3 8.1 102 13.6 8.4 162 ----- ----- Basin wide percent of average 109 160 UPPER N. PLATTE RIVER CINNABAR PARK 9574 24.4 17.8 137 30.3 19.7 154 COLUMBINE 9160 33.1 24.9 133 33.8 24.8 136 DIVIDE PEAK 8880 23.9 19.5 123 27.1 20.4 133 ELK RIVER 8700 25.1 19.2 131 26.1 19.2 136 JOE WRIGHT 10120 31.0 20.9 148 33.8 24.2 140 NORTH FRENCH CREEK 10130 43.2 28.6 151 -M 24.2 * OLD BATTLE 10000 42.2 31.7 133 29.3 34.1 86 SAGE CREEK BASIN 7850 21.0 11.3 186 18.5 11.8 157 SOUTH BRUSH CREEK 8440 18.5 12.9 143 21.4 16.0 134 TOWER 10500 53.3 44.7 119 46.3 37.8 122 WEBBER SPRINGS 9250 31.1 26.1 119 35.5 26.2 135 WILLOW CREEK PASS 9540 19.2 11.7 164 17.6 12.5 141 ----- ----- Basin wide percent of average 136 130 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 31.0 23.2 134 30.1 21.5 140 CASPER MTN. 7900 11.2 14.0 80 13.8 13.9 99 DEADMAN HILL 10220 21.2 15.9 133 21.4 16.5 130 DEER PARK 9700 18.6 16.6 112 21.5 21.5 100 LAPRELE CREEK 8375 13.1 10.8 121 14.0 12.3 114 RENO HILL 8400 14.3 13.7 104 16.6 14.4 115 ROACH 9700 20.1 16.7 120 23.1 18.2 127 SAND LAKE 10050 36.0 31.9 113 34.0 23.5 145 SOUTH PASS 9040 17.3 16.4 105 14.8 18.1 82 WINDY PEAK 7900 10.7 7.9 135 13.0 10.3 126 ----- ----- Basin wide percent of average 116 119 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M 11.4 * 14.1 15.5 91 DIVIDE PEAK 8880 23.9 19.5 123 27.1 20.4 133 OLD BATTLE 10000 42.2 31.7 133 29.3 34.1 86 SANDSTONE RS 8150 17.2 15.0 115 25.2 18.5 136 WHISKEY PARK 8950 -M 29.9 * 39.9 28.2 141 ----- ----- Basin wide percent of average 126 116 UPPER GREEN RIVER BIG SANDY OPENING 9080 15.3 14.4 106 15.3 13.2 116 BLIND BULL SUM 8650 31.1 27.8 112 21.7 22.0 99 EAST RIM DIVIDE 7930 15.6 13.0 120 13.0 12.0 108 ELKHART PARK G.S. 9400 13.7 13.3 103 13.5 13.1 103 GROS VENTRE SUMMIT 8750 14.8 14.1 105 14.2 12.8 111 GUNSIGHT PASS 9820 17.2 -M * 16.5 -M * KENDALL R.S. 7740 14.1 14.6 97 15.4 14.5 106 LOOMIS PARK 8240 20.6 17.3 119 20.4 17.3 118 NEW FORK LAKE 8340 13.0 11.1 117 11.6 11.2 104 POCKET CREEK 9360 12.6 -M * 14.4 -M * SNIDER BASIN 8060 20.9 14.5 144 19.4 16.0 121 SPRING CREEK DIVIDE 9000 34.6 26.4 131 31.8 26.2 121 TRIPLE PEAK 8500 31.6 24.8 127 32.4 24.5 132 ----- ----- Basin wide percent of average 118 114 LOWER GREEN RIVER HAMS FORK 7840 17.2 12.3 140 15.3 12.1 126 HEWINTA 9519 13.1 11.7 112 16.8 14.3 117 HICKERSON PARK 9145 8.9 7.3 122 10.0 7.7 130 HOLE-IN-ROCK 9150 8.3 7.0 119 10.6 7.2 147 INDIAN CREEK 9425 31.6 27.6 114 27.4 25.1 109 KELLEY R.S. 8180 21.1 16.8 126 23.9 20.1 119 STEEL CREEK PARK 10200 16.8 15.5 108 19.3 15.8 122 ----- ----- Basin wide percent of average 119 121 UPPER BEAR RIVER BUG LAKE 7950 -M 20.8 * -M 19.0 * HAYDEN FORK 9212 23.4 16.2 144 28.5 20.6 138 KELLEY R.S. 8180 21.1 16.8 126 23.9 20.1 119 LILY LAKE 9156 21.1 12.9 164 21.1 17.2 123 MONTE CRISTO 8960 37.8 29.7 127 36.4 25.2 144 SALT RIVER SUMMIT 7760 17.7 14.4 123 21.7 18.6 117 TRIAL LAKE 9992 35.4 24.8 143 32.9 24.6 134 ----- ----- Basin wide percent of average 136 130 ----------------------------------------------------------------------------- -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 1971-2000. 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.