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 20 , 2014 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER BASE CAMP 7030 16.7 13.0 128 17.8 16.3 109 BLACK BEAR 8170 27.2 27.8 98 26.1 29.0 90 BLIND BULL SUM 8650 25.3 16.9 150 17.4 15.1 115 COTTONWOOD CREEK 7670 23.0 15.5 148 24.3 18.4 132 EAST RIM DIVIDE 7930 12.6 7.5 168 11.2 8.9 126 GRAND TARGHEE 9260 33.7 27.6 122 25.0 23.7 105 GRANITE CREEK 6770 16.7 13.0 128 17.1 15.6 110 GRASSY LAKE 7265 26.5 24.7 107 25.9 27.9 93 GROS VENTRE SUMMIT 8750 11.4 9.2 124 10.6 9.5 112 GUNSIGHT PASS 9820 14.2 9.9 143 13.0 10.2 127 LEWIS LAKE DIVIDE 7850 24.7 24.2 102 25.8 27.3 95 PHILLIPS BENCH 8200 23.2 18.6 125 23.4 21.3 110 SALT RIVER SUMMIT 7760 13.3 9.8 136 14.6 12.6 116 SNAKE RIVER STATION 6920 14.5 13.6 107 17.4 17.7 98 SPRING CREEK DIVIDE 9000 25.8 17.0 152 24.1 18.2 132 THUMB DIVIDE 7980 11.6 11.1 105 11.3 13.8 82 TOGWOTEE PASS 9580 23.2 16.8 138 22.8 18.3 125 TWO OCEAN PLATEAU 9240 27.4 20.2 136 20.0 20.4 98 WILLOW CREEK 8380 28.2 20.5 138 30.0 25.1 120 YOUNTS PEAK 8350 -M 11.1 * -M 12.0 * ----- ----- Basin Index (%) 126 108 MADISON-GALLATIN BLACK BEAR 8170 27.2 27.8 98 26.1 29.0 90 CANYON 7870 10.4 9.8 106 11.9 12.4 96 MADISON PLATEAU 7750 15.6 16.5 95 16.0 19.8 81 WEST YELLOWSTONE 6700 9.5 8.1 117 10.5 11.0 95 WHISKEY CREEK 6800 11.5 11.3 102 13.4 15.3 88 ----- ----- Basin Index (%) 101 89 YELLOWSTONE BEARTOOTH LAKE 9360 20.2 15.7 129 18.6 14.8 126 BURNT MTN 5880 6.7 3.8 176 13.5 8.9 152 CANYON 7870 10.4 9.8 106 11.9 12.4 96 COLE CREEK 7850 13.6 8.9 153 9.7 8.6 113 EVENING STAR 9200 27.3 18.3 149 27.4 20.9 131 FISHER CREEK 9100 29.8 24.4 122 25.8 24.0 108 NORTHEAST ENTRANCE 7350 10.1 7.5 135 10.4 9.4 111 PARKER PEAK 9400 21.3 14.7 145 18.9 13.2 143 SYLVAN LAKE 8420 17.3 14.9 116 19.6 17.0 115 THUMB DIVIDE 7980 11.6 11.1 105 11.3 13.8 82 TWO OCEAN PLATEAU 9240 27.4 20.2 136 20.0 20.4 98 WHITE MILL 8700 21.9 17.0 129 18.8 18.0 104 WOLVERINE 7650 12.7 8.2 155 11.2 9.4 119 ----- ----- Basin Index (%) 132 114 WIND RIVER BURROUGHS CREEK 8750 -M 10.0 * -M 12.0 * CASTLE CREEK 8400 8.0 -M * 9.6 -M * COLD SPRINGS 9630 8.5 5.3 160 10.5 7.0 150 DEER PARK 9700 8.6 10.1 85 12.5 14.3 87 HOBBS PARK 10100 10.5 9.0 117 9.4 8.9 106 KIRWIN 9550 13.6 6.4 212 11.9 8.3 143 LITTLE WARM 9370 10.5 7.6 138 12.4 9.3 133 OWL CREEK 8975 5.3 3.5 151 5.3 4.0 132 SOUTH PASS 9040 11.0 10.6 104 10.2 12.7 80 ST. LAWRENCE ALT 8620 3.5 4.8 73 6.4 6.1 105 TOGWOTEE PASS 9580 23.2 16.8 138 22.8 18.3 125 TOWNSEND CREEK 8700 4.9 6.0 82 6.0 8.2 73 ----- ----- Basin Index (%) 124 111 BIGHORN BASIN BALD MTN. 9380 17.6 13.7 128 13.3 12.2 109 BEAR TRAP MEADOW 8200 7.6 3.9 195 7.8 5.8 134 BONE SPRINGS DIV 9350 14.4 11.2 129 10.9 11.0 99 GRAVE SPRINGS 8550 8.7 5.9 147 9.1 7.4 123 KIRWIN 9550 13.6 6.4 212 11.9 8.3 143 MARQUETTE 8760 7.5 -M * 9.0 -M * MIDDLE POWDER 7760 11.6 7.4 157 9.9 8.2 121 OWL CREEK 8975 5.3 3.5 151 5.3 4.0 132 POWDER RIVER PASS 9480 11.1 7.4 150 11.6 9.0 129 SHELL CREEK 9580 13.0 10.5 124 10.9 9.9 110 TIMBER CREEK 7950 4.7 3.1 152 6.4 4.9 131 ----- ----- Basin Index (%) 147 120 SHOSHONE RIVER BLACKWATER 9780 23.2 16.2 143 20.3 15.2 134 EVENING STAR 9200 27.3 18.3 149 27.4 20.9 131 MARQUETTE 8760 7.5 -M * 9.0 -M * SYLVAN ROAD 7120 11.4 8.8 130 15.7 13.3 118 YOUNTS PEAK 8350 -M 11.1 * -M 12.0 * ----- ----- Basin Index (%) 143 128 POWDER RIVER BEAR TRAP MEADOW 8200 7.6 3.9 195 7.8 5.8 134 CLOUD PEAK RESERVOIR 9860 13.9 9.9 140 12.2 9.0 136 GRAVE SPRINGS 8550 8.7 5.9 147 9.1 7.4 123 HANSEN SAWMILL 8360 6.3 4.4 143 8.4 5.7 147 MIDDLE POWDER 7760 11.6 7.4 157 9.9 8.2 121 POWDER RIVER PASS 9480 11.1 7.4 150 11.6 9.0 129 SOLDIER PARK 8720 7.9 -M * 7.6 -M * ----- ----- Basin Index (%) 152 131 TONGUE RIVER BIG GOOSE 7990 7.2 5.9 122 9.1 7.5 121 BONE SPRINGS DIV 9350 14.4 11.2 129 10.9 11.0 99 BURGESS JUNCTION 7880 9.8 7.6 129 10.7 8.5 126 DOME LAKE 8880 9.2 8.0 115 8.6 9.4 91 LITTLE GOOSE 8870 8.0 -M * 10.7 -M * SUCKER CREEK 8880 11.6 8.2 141 12.9 9.9 130 TIE CREEK 6870 5.4 4.1 132 10.2 7.9 129 ----- ----- Basin Index (%) 128 115 BELLE FOURCHE COLE CANYON 5910 5.2 4.7 111 11.4 6.8 168 ----- ----- Basin Index (%) 111 168 CHEYENNE RIVER BASIN BLIND PARK 6890 7.8 5.8 134 14.4 8.9 162 NORTH RAPID CREEK 6130 7.4 5.6 132 13.1 7.2 182 ----- ----- Basin Index (%) 133 171 UPPER N. PLATTE ARAPAHO RIDGE 10960 20.4 15.3 133 20.0 16.6 120 BLACKHALL MTN 9820 27.0 -M * 26.9 -M * COLUMBINE 9160 27.1 18.2 149 -M 19.2 * DIVIDE PEAK 8880 14.0 14.6 96 17.4 16.0 109 JOE WRIGHT 10120 15.4 15.3 101 23.8 18.6 128 LAPRELE CREEK 8375 5.5 7.0 79 7.2 8.8 82 MED BOW 10500 15.6 -M * 28.0 -M * NORTH FRENCH CREEK 10130 -M 19.6 * -M 19.8 * NEVER SUMMER 10280 18.2 14.7 124 14.0 -M * OLD BATTLE 10000 24.8 22.8 109 27.8 26.4 105 RAWAH 9020 10.8 7.7 140 13.3 10.1 132 SAGE CREEK BASIN 7850 8.6 10.2 84 9.9 11.3 88 SAND LAKE 10050 23.3 19.4 120 22.7 17.8 128 SOUTH BRUSH CREEK 8440 9.1 9.1 100 11.3 10.9 104 TOWER 10500 40.8 34.0 120 29.7 29.9 99 WEBBER SPRINGS 9250 19.0 17.4 109 20.7 19.9 104 WILLOW CREEK PASS 9540 10.6 8.9 119 10.6 9.7 109 ZIRKEL 9340 30.5 21.7 141 26.0 22.2 117 ----- ----- Basin Index (%) 118 110 SWEETWATER DEER PARK 9700 8.6 10.1 85 12.5 14.3 87 LARSEN CREEK 9000 8.8 8.8 100 10.9 -M * SOUTH PASS 9040 11.0 10.6 104 10.2 12.7 80 ----- ----- Basin Index (%) 96 84 LOWER N. PLATTE CASPER MTN. 7900 -M 9.4 * -M 10.4 * LAPRELE CREEK 8375 5.5 7.0 79 7.2 8.8 82 RENO HILL 8400 11.8 9.2 128 13.5 10.5 129 WINDY PEAK 7900 5.1 5.4 94 7.7 7.4 104 ----- ----- Basin Index (%) 104 106 LARAMIE RIVER BROOKLYN LAKE 10240 22.4 14.3 157 21.4 15.0 143 CINNABAR PARK 9574 17.3 16.2 107 20.5 18.9 108 CROW CREEK 8330 6.3 6.6 95 8.3 7.4 112 DEADMAN HILL 10220 17.9 11.8 152 16.9 11.9 142 RAWAH 9020 10.8 7.7 140 13.3 10.1 132 ROACH 9700 -M 11.9 * -M 13.8 * ----- ----- Basin Index (%) 132 127 S. PLATTE BLACK MOUNTAIN 8920 8.8 -M * 10.3 -M * CROW CREEK 8330 6.3 6.6 95 8.3 7.4 112 DEADMAN HILL 10220 17.9 11.8 152 16.9 11.9 142 ----- ----- Basin Index (%) 132 131 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 9.1 8.9 102 13.3 11.4 117 DIVIDE PEAK 8880 14.0 14.6 96 17.4 16.0 109 ELK RIVER 8700 16.1 14.1 114 17.0 15.1 113 LITTLE SNAKE RIVER 8915 23.3 18.8 124 27.6 24.1 115 OLD BATTLE 10000 24.8 22.8 109 27.8 26.4 105 SAGE CREEK BASIN 7850 8.6 10.2 84 9.9 11.3 88 SANDSTONE RS 8150 9.9 10.2 97 14.3 14.2 101 WHISKEY PARK 8950 30.5 19.8 154 30.7 21.1 145 ----- ----- Basin Index (%) 114 113 UPPER GREEN RIVER BIG SANDY OPENING 9080 10.8 9.3 116 10.2 9.8 104 BLIND BULL SUM 8650 25.3 16.9 150 17.4 15.1 115 EAST RIM DIVIDE 7930 12.6 7.5 168 11.2 8.9 126 ELKHART PARK G.S. 9400 12.8 8.8 145 11.9 9.8 121 GROS VENTRE SUMMIT 8750 11.4 9.2 124 10.6 9.5 112 GUNSIGHT PASS 9820 14.2 9.9 143 13.0 10.2 127 KENDALL R.S. 7740 14.6 9.2 159 15.0 10.9 138 LOOMIS PARK 8240 16.7 10.9 153 17.7 13.2 134 NEW FORK LAKE 8340 11.0 7.6 145 9.3 8.2 113 POCKET CREEK 9360 9.2 -M * 9.6 -M * SNIDER BASIN 8060 15.3 9.1 168 15.0 10.8 139 SPRING CREEK DIVIDE 9000 25.8 17.0 152 24.1 18.2 132 TRIPLE PEAK 8500 24.9 15.8 158 26.6 18.8 141 ----- ----- Basin Index (%) 149 127 LOWER GREEN RIVER BLACKS FORK JCT 8870 6.1 -M * 9.9 -M * BUCK PASTURE 9700 10.3 -M * 11.8 -M * EF BLACKS FORK GS 9360 6.4 -M * 7.9 -M * HAMS FORK 7840 12.1 8.6 141 10.8 8.6 126 HEWINTA 9519 6.9 7.2 96 10.3 10.1 102 HICKERSON PARK 9145 5.6 5.3 106 6.6 7.1 93 HOLE-IN-ROCK 9150 5.2 5.0 104 6.9 6.7 103 INDIAN CREEK 9425 22.8 17.2 133 19.3 16.7 116 KELLEY R.S. 8180 14.1 11.0 128 15.7 13.7 115 SPIRIT LK 10235 6.5 -M * 9.9 -M * STEEL CREEK PARK 10200 14.1 10.6 133 12.1 11.6 104 ----- ----- Basin Index (%) 124 110 UPPER BEAR RIVER BEAR RIVER RS 8777 6.7 -M * 9.0 -M * BUG LAKE 7950 16.8 13.7 123 15.0 14.6 103 BURTS MILLER RANCH 8000 5.5 -M * 5.2 -M * CHALK CREEK #1 8993 16.2 16.8 96 16.7 18.4 91 HAYDEN FORK 9212 11.3 11.3 100 15.1 15.4 98 KELLEY R.S. 8180 14.1 11.0 128 15.7 13.7 115 LILY LAKE 9156 10.1 9.4 107 11.5 12.4 93 MONTE CRISTO 8960 19.5 19.4 101 18.2 19.3 94 SALT RIVER SUMMIT 7760 13.3 9.8 136 14.6 12.6 116 ----- ----- Basin Index (%) 111 100 ----------------------------------------------------------------------------- -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. ---------------------------------------------------------------------------- -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.