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 FRIDAY: FEBRUARY 28 , 2014 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER BASE CAMP 7030 17.6 13.4 131 18.3 17.1 107 BLACK BEAR 8170 28.6 29.2 98 27.2 30.6 89 BLIND BULL SUM 8650 28.6 17.6 162 18.7 15.9 118 COTTONWOOD CREEK 7670 25.6 16.6 154 27.4 19.4 141 EAST RIM DIVIDE 7930 13.9 8.0 174 12.4 9.5 131 GRAND TARGHEE 9260 36.0 29.7 121 27.1 24.7 110 GRANITE CREEK 6770 18.2 13.6 134 18.7 16.4 114 GRASSY LAKE 7265 28.3 25.9 109 28.5 29.3 97 GROS VENTRE SUMMIT 8750 12.1 9.6 126 11.4 10.0 114 GUNSIGHT PASS 9820 15.7 10.5 150 14.6 10.8 135 LEWIS LAKE DIVIDE 7850 26.9 25.1 107 28.8 28.6 101 PHILLIPS BENCH 8200 26.1 19.5 134 25.9 22.6 115 SALT RIVER SUMMIT 7760 14.8 10.5 141 15.9 13.4 119 SNAKE RIVER STATION 6920 15.5 14.1 110 18.5 18.5 100 SPRING CREEK DIVIDE 9000 29.4 18.3 161 27.6 19.2 144 THUMB DIVIDE 7980 12.5 12.1 103 11.9 14.5 82 TOGWOTEE PASS 9580 25.7 17.5 147 24.5 19.3 127 TWO OCEAN PLATEAU 9240 29.7 21.4 139 -M 21.5 * WILLOW CREEK 8380 31.4 22.1 142 31.3 26.7 117 YOUNTS PEAK 8350 -M 11.6 * -M 12.6 * ----- ----- Basin Index (%) 130 112 MADISON-GALLATIN BLACK BEAR 8170 28.6 29.2 98 27.2 30.6 89 CANYON 7870 11.0 10.4 106 12.8 13.0 98 MADISON PLATEAU 7750 16.3 17.7 92 16.8 21.1 80 WEST YELLOWSTONE 6700 9.9 8.9 111 11.0 11.6 95 WHISKEY CREEK 6800 12.0 12.0 100 13.9 16.2 86 ----- ----- Basin Index (%) 99 88 YELLOWSTONE BEARTOOTH LAKE 9360 23.1 16.4 141 21.4 15.6 137 BURNT MTN 5880 7.7 4.0 192 14.2 9.2 154 CANYON 7870 11.0 10.4 106 12.8 13.0 98 COLE CREEK 7850 14.9 9.6 155 10.9 9.0 121 EVENING STAR 9200 30.5 18.9 161 30.0 22.0 136 FISHER CREEK 9100 32.6 25.5 128 28.2 25.4 111 NORTHEAST ENTRANCE 7350 11.6 8.0 145 11.7 9.8 119 PARKER PEAK 9400 23.5 15.9 148 20.2 14.0 144 SYLVAN LAKE 8420 18.0 15.7 115 20.7 17.9 116 THUMB DIVIDE 7980 12.5 12.1 103 11.9 14.5 82 TWO OCEAN PLATEAU 9240 29.7 21.4 139 -M 21.5 * WHITE MILL 8700 24.8 18.1 137 21.2 18.8 113 WOLVERINE 7650 14.5 8.5 171 13.1 9.9 132 ----- ----- Basin Index (%) 138 121 WIND RIVER BURROUGHS CREEK 8750 -M 10.6 * -M 12.7 * CASTLE CREEK 8400 9.3 -M * 10.8 -M * COLD SPRINGS 9630 9.4 5.4 174 11.4 7.4 154 DEER PARK 9700 9.4 10.8 87 13.6 15.1 90 HOBBS PARK 10100 11.1 9.5 117 10.0 9.4 106 KIRWIN 9550 15.5 6.9 225 12.9 8.7 148 LITTLE WARM 9370 11.8 7.8 151 13.9 9.8 142 OWL CREEK 8975 5.9 3.9 151 5.9 4.3 137 SOUTH PASS 9040 11.8 11.3 104 11.0 13.3 83 ST. LAWRENCE ALT 8620 3.4 5.0 68 6.7 6.4 105 TOGWOTEE PASS 9580 25.7 17.5 147 24.5 19.3 127 TOWNSEND CREEK 8700 5.3 6.3 84 6.2 8.6 72 ----- ----- Basin Index (%) 130 113 BIGHORN BASIN BALD MTN. 9380 19.5 14.5 134 15.0 13.0 115 BEAR TRAP MEADOW 8200 8.2 4.3 191 8.4 6.1 138 BONE SPRINGS DIV 9350 16.4 11.7 140 12.6 11.7 108 GRAVE SPRINGS 8550 9.1 6.7 136 9.5 7.8 122 KIRWIN 9550 15.5 6.9 225 12.9 8.7 148 MARQUETTE 8760 9.0 -M * 9.7 -M * MIDDLE POWDER 7760 12.3 7.9 156 10.3 8.6 120 OWL CREEK 8975 5.9 3.9 151 5.9 4.3 137 POWDER RIVER PASS 9480 12.4 7.9 157 13.0 9.5 137 SHELL CREEK 9580 14.8 11.4 130 12.5 10.5 119 TIMBER CREEK 7950 5.3 3.4 156 6.9 5.2 133 ----- ----- Basin Index (%) 152 125 SHOSHONE RIVER BLACKWATER 9780 25.3 17.0 149 22.3 16.0 139 EVENING STAR 9200 30.5 18.9 161 30.0 22.0 136 MARQUETTE 8760 9.0 -M * 9.7 -M * SYLVAN ROAD 7120 12.3 9.3 132 16.5 13.8 120 YOUNTS PEAK 8350 -M 11.6 * -M 12.6 * ----- ----- Basin Index (%) 151 133 POWDER RIVER BEAR TRAP MEADOW 8200 8.2 4.3 191 8.4 6.1 138 CLOUD PEAK RESERVOIR 9860 15.3 10.3 149 13.4 9.5 141 GRAVE SPRINGS 8550 9.1 6.7 136 9.5 7.8 122 HANSEN SAWMILL 8360 7.1 4.6 154 9.3 6.0 155 MIDDLE POWDER 7760 12.3 7.9 156 10.3 8.6 120 POWDER RIVER PASS 9480 12.4 7.9 157 13.0 9.5 137 SOLDIER PARK 8720 8.9 -M * 8.4 -M * ----- ----- Basin Index (%) 154 135 TONGUE RIVER BIG GOOSE 7990 8.0 6.1 131 10.1 7.7 131 BONE SPRINGS DIV 9350 16.4 11.7 140 12.6 11.7 108 BURGESS JUNCTION 7880 10.7 8.2 130 11.9 8.9 134 DOME LAKE 8880 10.6 8.5 125 9.8 9.9 99 LITTLE GOOSE 8870 9.1 -M * 11.7 -M * SUCKER CREEK 8880 12.8 8.8 145 14.3 10.5 136 TIE CREEK 6870 6.1 4.2 145 11.0 8.2 134 ----- ----- Basin Index (%) 136 122 BELLE FOURCHE COLE CANYON 5910 5.1 5.0 102 11.7 7.0 167 ----- ----- Basin Index (%) 102 167 CHEYENNE RIVER BASIN BLIND PARK 6890 8.0 6.4 125 14.7 9.3 158 NORTH RAPID CREEK 6130 7.7 5.8 133 13.3 7.6 175 ----- ----- Basin Index (%) 129 166 UPPER N. PLATTE ARAPAHO RIDGE 10960 22.0 16.4 134 21.4 17.5 122 BLACKHALL MTN 9820 29.3 -M * 27.0 -M * COLUMBINE 9160 29.0 19.6 148 29.7 20.2 147 DIVIDE PEAK 8880 14.5 15.5 94 17.9 16.7 107 JOE WRIGHT 10120 16.3 16.4 99 25.5 19.8 129 LAPRELE CREEK 8375 6.2 7.7 81 7.8 9.2 85 MED BOW 10500 13.5 -M * 27.7 -M * NORTH FRENCH CREEK 10130 -M 20.9 * -M 20.9 * NEVER SUMMER 10280 19.4 16.0 121 15.1 -M * OLD BATTLE 10000 26.1 23.8 110 29.9 27.7 108 RAWAH 9020 11.1 8.6 129 13.9 10.8 129 SAGE CREEK BASIN 7850 8.9 10.5 85 10.0 11.6 86 SAND LAKE 10050 25.0 21.0 119 24.2 18.7 129 SOUTH BRUSH CREEK 8440 9.5 10.1 94 11.6 11.7 99 TOWER 10500 42.4 35.8 118 34.7 31.6 110 WEBBER SPRINGS 9250 20.1 18.5 109 22.4 21.0 107 WILLOW CREEK PASS 9540 11.0 9.4 117 11.5 10.2 113 ZIRKEL 9340 34.4 22.8 151 27.7 23.3 119 ----- ----- Basin Index (%) 117 115 SWEETWATER DEER PARK 9700 9.4 10.8 87 13.6 15.1 90 LARSEN CREEK 9000 10.1 9.4 107 12.0 -M * SOUTH PASS 9040 11.8 11.3 104 11.0 13.3 83 ----- ----- Basin Index (%) 99 87 LOWER N. PLATTE CASPER MTN. 7900 -M 10.0 * -M 11.0 * LAPRELE CREEK 8375 6.2 7.7 81 7.8 9.2 85 RENO HILL 8400 12.2 9.8 124 14.4 11.0 131 WINDY PEAK 7900 5.8 5.7 102 8.3 7.7 108 ----- ----- Basin Index (%) 104 109 LARAMIE RIVER BROOKLYN LAKE 10240 25.0 14.8 169 23.9 15.9 150 CINNABAR PARK 9574 18.6 16.9 110 20.6 19.6 105 CROW CREEK 8330 6.5 6.7 97 9.5 7.7 123 DEADMAN HILL 10220 19.8 12.4 160 19.0 12.6 151 RAWAH 9020 11.1 8.6 129 13.9 10.8 129 ROACH 9700 -M 12.3 * -M 14.6 * ----- ----- Basin Index (%) 136 130 S. PLATTE BLACK MOUNTAIN 8920 9.6 -M * 11.1 -M * CROW CREEK 8330 6.5 6.7 97 9.5 7.7 123 DEADMAN HILL 10220 19.8 12.4 160 19.0 12.6 151 ----- ----- Basin Index (%) 138 140 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 9.1 9.8 93 13.8 12.1 114 DIVIDE PEAK 8880 14.5 15.5 94 17.9 16.7 107 ELK RIVER 8700 17.4 15.2 114 18.2 15.8 115 LITTLE SNAKE RIVER 8915 24.7 19.6 126 28.8 24.9 116 OLD BATTLE 10000 26.1 23.8 110 29.9 27.7 108 SAGE CREEK BASIN 7850 8.9 10.5 85 10.0 11.6 86 SANDSTONE RS 8150 10.0 10.3 97 14.6 15.0 97 WHISKEY PARK 8950 32.5 21.2 153 31.0 22.2 140 ----- ----- Basin Index (%) 114 112 UPPER GREEN RIVER BIG SANDY OPENING 9080 12.0 9.9 121 11.2 10.4 108 BLIND BULL SUM 8650 28.6 17.6 162 18.7 15.9 118 EAST RIM DIVIDE 7930 13.9 8.0 174 12.4 9.5 131 ELKHART PARK G.S. 9400 14.3 9.3 154 13.2 10.4 127 GROS VENTRE SUMMIT 8750 12.1 9.6 126 11.4 10.0 114 GUNSIGHT PASS 9820 15.7 10.5 150 14.6 10.8 135 KENDALL R.S. 7740 17.0 9.7 175 17.2 11.6 148 LOOMIS PARK 8240 18.8 11.6 162 19.3 14.0 138 NEW FORK LAKE 8340 12.7 8.1 157 10.7 8.7 123 POCKET CREEK 9360 10.1 -M * 10.2 -M * SNIDER BASIN 8060 17.3 9.5 182 16.9 11.5 147 SPRING CREEK DIVIDE 9000 29.4 18.3 161 27.6 19.2 144 TRIPLE PEAK 8500 28.6 16.6 172 30.1 20.1 150 ----- ----- Basin Index (%) 159 134 LOWER GREEN RIVER BLACKS FORK JCT 8870 6.8 -M * 10.7 -M * BUCK PASTURE 9700 11.1 -M * 12.6 -M * EF BLACKS FORK GS 9360 7.2 -M * 8.2 -M * HAMS FORK 7840 13.4 9.1 147 11.7 9.1 129 HEWINTA 9519 8.2 7.8 105 11.2 10.7 105 HICKERSON PARK 9145 5.9 5.8 102 7.4 7.5 99 HOLE-IN-ROCK 9150 5.6 5.5 102 7.3 7.0 104 INDIAN CREEK 9425 25.8 18.7 138 21.6 17.7 122 KELLEY R.S. 8180 15.4 12.0 128 17.1 14.5 118 SPIRIT LK 10235 6.8 -M * 10.2 -M * STEEL CREEK PARK 10200 14.9 11.4 131 12.8 12.3 104 ----- ----- Basin Index (%) 127 113 UPPER BEAR RIVER BEAR RIVER RS 8777 7.4 -M * 9.7 -M * BUG LAKE 7950 17.9 14.6 123 15.8 15.4 103 BURTS MILLER RANCH 8000 5.5 -M * 5.6 -M * CHALK CREEK #1 8993 17.3 18.1 96 17.5 19.3 91 HAYDEN FORK 9212 12.1 11.9 102 16.2 16.3 99 KELLEY R.S. 8180 15.4 12.0 128 17.1 14.5 118 LILY LAKE 9156 10.9 10.1 108 12.2 13.1 93 MONTE CRISTO 8960 20.7 20.6 100 19.1 20.4 94 SALT RIVER SUMMIT 7760 14.8 10.5 141 15.9 13.4 119 ----- ----- Basin Index (%) 112 101 ----------------------------------------------------------------------------- -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. ---------------------------------------------------------------------------- -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.