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: FEBRUARY 27 , 2014 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER BASE CAMP 7030 17.5 13.3 132 18.4 17.1 108 BLACK BEAR 8170 28.1 29.1 97 26.7 30.5 88 BLIND BULL SUM 8650 28.4 17.6 161 18.1 15.8 115 COTTONWOOD CREEK 7670 25.3 16.4 154 27.1 19.4 140 EAST RIM DIVIDE 7930 13.8 7.9 175 12.3 9.5 129 GRAND TARGHEE 9260 34.8 29.4 118 26.1 24.6 106 GRANITE CREEK 6770 18.1 13.5 134 18.7 16.4 114 GRASSY LAKE 7265 27.8 25.7 108 27.8 29.2 95 GROS VENTRE SUMMIT 8750 12.1 9.5 127 11.3 10.0 113 GUNSIGHT PASS 9820 15.6 10.4 150 14.5 10.8 134 LEWIS LAKE DIVIDE 7850 26.8 25.1 107 28.5 28.5 100 PHILLIPS BENCH 8200 25.9 19.4 134 25.7 22.5 114 SALT RIVER SUMMIT 7760 14.7 10.4 141 15.8 13.3 119 SNAKE RIVER STATION 6920 15.4 14.0 110 18.5 18.5 100 SPRING CREEK DIVIDE 9000 29.1 18.1 161 27.5 19.1 144 THUMB DIVIDE 7980 12.4 11.9 104 11.8 14.5 81 TOGWOTEE PASS 9580 25.5 17.5 146 24.4 19.2 127 TWO OCEAN PLATEAU 9240 29.5 21.4 138 -M 21.5 * WILLOW CREEK 8380 31.1 22.0 141 31.3 26.6 118 YOUNTS PEAK 8350 -M 11.5 * -M 12.5 * ----- ----- Basin Index (%) 130 111 MADISON-GALLATIN BLACK BEAR 8170 28.1 29.1 97 26.7 30.5 88 CANYON 7870 11.0 10.4 106 12.7 12.9 98 MADISON PLATEAU 7750 16.2 17.6 92 16.7 21.0 80 WEST YELLOWSTONE 6700 9.8 8.8 111 10.9 11.5 95 WHISKEY CREEK 6800 11.9 11.9 100 13.9 16.1 86 ----- ----- Basin Index (%) 99 88 YELLOWSTONE BEARTOOTH LAKE 9360 22.9 16.2 141 21.2 15.6 136 BURNT MTN 5880 7.6 4.0 190 14.1 9.2 153 CANYON 7870 11.0 10.4 106 12.7 12.9 98 COLE CREEK 7850 14.8 9.5 156 10.8 8.9 121 EVENING STAR 9200 30.2 18.9 160 29.8 21.9 136 FISHER CREEK 9100 32.3 25.4 127 28.0 25.2 111 NORTHEAST ENTRANCE 7350 11.5 7.9 146 11.6 9.8 118 PARKER PEAK 9400 23.3 15.8 147 20.1 13.8 146 SYLVAN LAKE 8420 18.1 15.7 115 20.6 17.8 116 THUMB DIVIDE 7980 12.4 11.9 104 11.8 14.5 81 TWO OCEAN PLATEAU 9240 29.5 21.4 138 -M 21.5 * WHITE MILL 8700 24.5 18.0 136 21.0 18.8 112 WOLVERINE 7650 14.6 8.5 172 13.0 9.9 131 ----- ----- Basin Index (%) 138 120 WIND RIVER BURROUGHS CREEK 8750 -M 10.6 * -M 12.7 * CASTLE CREEK 8400 9.2 -M * 10.6 -M * COLD SPRINGS 9630 9.3 5.4 172 11.4 7.4 154 DEER PARK 9700 9.4 10.8 87 13.5 15.0 90 HOBBS PARK 10100 11.1 9.4 118 9.9 9.3 106 KIRWIN 9550 15.3 6.8 225 12.9 8.7 148 LITTLE WARM 9370 11.7 7.8 150 13.8 9.8 141 OWL CREEK 8975 5.8 3.8 153 5.8 4.2 138 SOUTH PASS 9040 11.8 11.2 105 10.9 13.3 82 ST. LAWRENCE ALT 8620 3.6 5.0 72 6.8 6.4 106 TOGWOTEE PASS 9580 25.5 17.5 146 24.4 19.2 127 TOWNSEND CREEK 8700 5.2 6.3 83 6.2 8.5 73 ----- ----- Basin Index (%) 129 114 BIGHORN BASIN BALD MTN. 9380 19.4 14.4 135 14.8 12.9 115 BEAR TRAP MEADOW 8200 8.2 4.3 191 8.3 6.0 138 BONE SPRINGS DIV 9350 16.2 11.6 140 12.3 11.6 106 GRAVE SPRINGS 8550 9.0 6.6 136 9.4 7.7 122 KIRWIN 9550 15.3 6.8 225 12.9 8.7 148 MARQUETTE 8760 9.0 -M * 9.7 -M * MIDDLE POWDER 7760 12.3 7.8 158 10.2 8.6 119 OWL CREEK 8975 5.8 3.8 153 5.8 4.2 138 POWDER RIVER PASS 9480 12.3 7.8 158 12.9 9.4 137 SHELL CREEK 9580 14.7 11.3 130 12.5 10.4 120 TIMBER CREEK 7950 5.2 3.3 158 6.8 5.2 131 ----- ----- Basin Index (%) 152 125 SHOSHONE RIVER BLACKWATER 9780 25.1 16.9 149 22.2 15.9 140 EVENING STAR 9200 30.2 18.9 160 29.8 21.9 136 MARQUETTE 8760 9.0 -M * 9.7 -M * SYLVAN ROAD 7120 12.4 9.2 135 16.5 13.8 120 YOUNTS PEAK 8350 -M 11.5 * -M 12.5 * ----- ----- Basin Index (%) 150 133 POWDER RIVER BEAR TRAP MEADOW 8200 8.2 4.3 191 8.3 6.0 138 CLOUD PEAK RESERVOIR 9860 15.2 10.2 149 13.4 9.4 143 GRAVE SPRINGS 8550 9.0 6.6 136 9.4 7.7 122 HANSEN SAWMILL 8360 7.2 4.6 157 9.2 5.9 156 MIDDLE POWDER 7760 12.3 7.8 158 10.2 8.6 119 POWDER RIVER PASS 9480 12.3 7.8 158 12.9 9.4 137 SOLDIER PARK 8720 8.8 -M * 8.3 -M * ----- ----- Basin Index (%) 155 135 TONGUE RIVER BIG GOOSE 7990 7.9 6.1 130 10.0 7.7 130 BONE SPRINGS DIV 9350 16.2 11.6 140 12.3 11.6 106 BURGESS JUNCTION 7880 10.7 8.1 132 11.6 8.9 130 DOME LAKE 8880 10.5 8.5 124 9.8 9.8 100 LITTLE GOOSE 8870 9.0 -M * 11.7 -M * SUCKER CREEK 8880 12.7 8.7 146 14.2 10.4 137 TIE CREEK 6870 6.1 4.2 145 10.9 8.2 133 ----- ----- Basin Index (%) 136 122 BELLE FOURCHE COLE CANYON 5910 5.0 5.0 100 11.7 7.0 167 ----- ----- Basin Index (%) 100 167 CHEYENNE RIVER BASIN BLIND PARK 6890 8.0 6.3 127 14.7 9.2 160 NORTH RAPID CREEK 6130 7.5 5.8 129 13.3 7.5 177 ----- ----- Basin Index (%) 128 168 UPPER N. PLATTE ARAPAHO RIDGE 10960 21.6 16.3 133 21.4 17.4 123 BLACKHALL MTN 9820 28.7 -M * 27.2 -M * COLUMBINE 9160 28.6 19.4 147 -M 20.2 * DIVIDE PEAK 8880 14.3 15.4 93 17.8 16.6 107 JOE WRIGHT 10120 15.8 16.2 98 25.6 19.7 130 LAPRELE CREEK 8375 5.8 7.6 76 7.6 9.2 83 MED BOW 10500 13.5 -M * 27.6 -M * NORTH FRENCH CREEK 10130 -M 20.8 * -M 20.8 * NEVER SUMMER 10280 19.0 15.9 119 15.2 -M * OLD BATTLE 10000 25.8 23.7 109 29.5 27.5 107 RAWAH 9020 11.1 8.5 131 13.7 10.7 128 SAGE CREEK BASIN 7850 8.9 10.5 85 9.9 11.5 86 SAND LAKE 10050 24.7 20.8 119 24.1 18.6 130 SOUTH BRUSH CREEK 8440 9.2 10.0 92 11.4 11.6 98 TOWER 10500 41.7 35.7 117 33.7 31.5 107 WEBBER SPRINGS 9250 19.8 18.4 108 22.3 20.9 107 WILLOW CREEK PASS 9540 10.9 9.3 117 11.6 10.2 114 ZIRKEL 9340 33.6 22.7 148 27.6 23.2 119 ----- ----- Basin Index (%) 116 112 SWEETWATER DEER PARK 9700 9.4 10.8 87 13.5 15.0 90 LARSEN CREEK 9000 10.0 9.3 108 11.9 -M * SOUTH PASS 9040 11.8 11.2 105 10.9 13.3 82 ----- ----- Basin Index (%) 100 86 LOWER N. PLATTE CASPER MTN. 7900 -M 9.9 * -M 11.0 * LAPRELE CREEK 8375 5.8 7.6 76 7.6 9.2 83 RENO HILL 8400 12.1 9.7 125 14.4 10.9 132 WINDY PEAK 7900 5.8 5.7 102 8.3 7.7 108 ----- ----- Basin Index (%) 103 109 LARAMIE RIVER BROOKLYN LAKE 10240 24.8 14.7 169 23.6 15.8 149 CINNABAR PARK 9574 18.4 16.8 110 20.6 19.4 106 CROW CREEK 8330 6.6 6.6 100 9.3 7.7 121 DEADMAN HILL 10220 19.6 12.3 159 18.5 12.6 147 RAWAH 9020 11.1 8.5 131 13.7 10.7 128 ROACH 9700 15.7 12.2 129 18.7 14.5 129 ----- ----- Basin Index (%) 135 129 S. PLATTE BLACK MOUNTAIN 8920 9.5 -M * 11.1 -M * CROW CREEK 8330 6.6 6.6 100 9.3 7.7 121 DEADMAN HILL 10220 19.6 12.3 159 18.5 12.6 147 ----- ----- Basin Index (%) 139 137 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 8.8 9.7 91 13.3 12.0 111 DIVIDE PEAK 8880 14.3 15.4 93 17.8 16.6 107 ELK RIVER 8700 16.8 15.0 112 17.8 15.8 113 LITTLE SNAKE RIVER 8915 23.9 19.6 122 28.5 24.7 115 OLD BATTLE 10000 25.8 23.7 109 29.5 27.5 107 SAGE CREEK BASIN 7850 8.9 10.5 85 9.9 11.5 86 SANDSTONE RS 8150 9.6 10.3 93 14.4 14.9 97 WHISKEY PARK 8950 31.7 21.0 151 30.9 22.1 140 ----- ----- Basin Index (%) 112 112 UPPER GREEN RIVER BIG SANDY OPENING 9080 11.8 9.8 120 11.1 10.4 107 BLIND BULL SUM 8650 28.4 17.6 161 18.1 15.8 115 EAST RIM DIVIDE 7930 13.8 7.9 175 12.3 9.5 129 ELKHART PARK G.S. 9400 14.2 9.3 153 13.1 10.4 126 GROS VENTRE SUMMIT 8750 12.1 9.5 127 11.3 10.0 113 GUNSIGHT PASS 9820 15.6 10.4 150 14.5 10.8 134 KENDALL R.S. 7740 16.8 9.7 173 17.0 11.6 147 LOOMIS PARK 8240 18.6 11.6 160 19.2 13.9 138 NEW FORK LAKE 8340 12.6 8.1 156 10.6 8.7 122 POCKET CREEK 9360 10.0 -M * 10.2 -M * SNIDER BASIN 8060 17.1 9.4 182 16.8 11.4 147 SPRING CREEK DIVIDE 9000 29.1 18.1 161 27.5 19.1 144 TRIPLE PEAK 8500 28.4 16.5 172 29.9 20.0 150 ----- ----- Basin Index (%) 158 133 LOWER GREEN RIVER BLACKS FORK JCT 8870 6.5 -M * 10.2 -M * BUCK PASTURE 9700 10.6 -M * 12.3 -M * EF BLACKS FORK GS 9360 6.9 -M * 7.9 -M * HAMS FORK 7840 13.3 9.1 146 11.6 9.1 127 HEWINTA 9519 7.6 7.7 99 10.5 10.7 98 HICKERSON PARK 9145 5.5 5.7 96 6.9 7.4 93 HOLE-IN-ROCK 9150 5.3 5.5 96 7.0 7.0 100 INDIAN CREEK 9425 25.5 18.5 138 21.3 17.6 121 KELLEY R.S. 8180 15.3 11.9 129 17.0 14.4 118 SPIRIT LK 10235 6.8 -M * 10.1 -M * STEEL CREEK PARK 10200 14.4 11.3 127 12.4 12.2 102 ----- ----- Basin Index (%) 125 111 UPPER BEAR RIVER BEAR RIVER RS 8777 7.1 -M * 9.2 -M * BUG LAKE 7950 17.4 14.5 120 15.4 15.3 101 BURTS MILLER RANCH 8000 5.5 -M * 5.3 -M * CHALK CREEK #1 8993 16.4 17.9 92 16.9 19.2 88 HAYDEN FORK 9212 11.5 11.8 97 15.6 16.2 96 KELLEY R.S. 8180 15.3 11.9 129 17.0 14.4 118 LILY LAKE 9156 10.3 10.0 103 11.7 13.0 90 MONTE CRISTO 8960 20.0 20.4 98 18.7 20.3 92 SALT RIVER SUMMIT 7760 14.7 10.4 141 15.8 13.3 119 ----- ----- Basin Index (%) 109 99 ----------------------------------------------------------------------------- -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.