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: APRIL 21 , 2014 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER BASE CAMP 7030 20.1 11.7 172 27.3 21.8 125 BLACK BEAR 8170 43.5 36.9 118 41.7 40.0 104 BLIND BULL SUM 8650 37.4 24.1 155 23.7 20.3 117 COTTONWOOD CREEK 7670 27.1 18.3 148 35.2 26.0 135 EAST RIM DIVIDE 7930 14.3 9.4 152 16.0 12.3 130 GRAND TARGHEE 9260 52.5 42.2 124 -M 32.8 * GRANITE CREEK 6770 21.1 10.5 201 24.7 20.4 121 GRASSY LAKE 7265 40.7 31.1 131 41.5 37.6 110 GROS VENTRE SUMMIT 8750 14.4 13.2 109 15.0 13.8 109 GUNSIGHT PASS 9820 21.3 13.7 155 19.4 15.0 129 LEWIS LAKE DIVIDE 7850 41.2 30.5 135 41.7 37.0 113 PHILLIPS BENCH 8200 34.3 25.4 135 35.3 29.3 120 SALT RIVER SUMMIT 7760 14.8 9.4 157 19.5 17.4 112 SNAKE RIVER STATION 6920 17.4 11.1 157 27.0 23.6 114 SPRING CREEK DIVIDE 9000 37.4 23.5 159 33.5 24.9 135 THUMB DIVIDE 7980 20.8 14.4 144 20.3 19.8 103 TOGWOTEE PASS 9580 33.4 24.0 139 34.2 25.8 133 TWO OCEAN PLATEAU 9240 40.2 28.3 142 35.1 28.7 122 WILLOW CREEK 8380 41.5 26.7 155 42.4 35.4 120 YOUNTS PEAK 8350 -M 15.2 * -M 16.7 * ----- ----- Basin Index (%) 142 119 MADISON-GALLATIN BLACK BEAR 8170 43.5 36.9 118 41.7 40.0 104 CANYON 7870 15.6 12.2 128 17.8 17.1 104 MADISON PLATEAU 7750 25.3 22.9 110 26.2 27.6 95 WEST YELLOWSTONE 6700 9.0 7.0 129 17.0 15.2 112 WHISKEY CREEK 6800 17.4 15.4 113 22.3 21.3 105 ----- ----- Basin Index (%) 117 103 YELLOWSTONE BEARTOOTH LAKE 9360 33.1 23.5 141 31.4 20.8 151 BURNT MTN 5880 8.7 .0 * 21.2 14.4 147 CANYON 7870 15.6 12.2 128 17.8 17.1 104 COLE CREEK 7850 24.9 16.4 152 18.3 14.6 125 EVENING STAR 9200 40.5 24.7 164 42.4 28.9 147 FISHER CREEK 9100 46.1 32.6 141 41.6 33.5 124 NORTHEAST ENTRANCE 7350 13.8 6.4 216 16.6 13.0 128 PARKER PEAK 9400 34.4 21.1 163 31.0 18.8 165 SYLVAN LAKE 8420 23.2 20.4 114 30.4 23.7 128 THUMB DIVIDE 7980 20.8 14.4 144 20.3 19.8 103 TWO OCEAN PLATEAU 9240 40.2 28.3 142 35.1 28.7 122 WHITE MILL 8700 34.3 23.7 145 30.5 25.0 122 WOLVERINE 7650 15.6 6.9 226 18.2 12.9 141 ----- ----- Basin Index (%) 152 131 WIND RIVER BURROUGHS CREEK 8750 -M 13.2 * -M 16.8 * CASTLE CREEK 8400 8.5 -M * 13.0 -M * COLD SPRINGS 9630 8.8 4.3 205 13.4 11.0 122 DEER PARK 9700 -M 16.3 * 20.3 21.7 94 HOBBS PARK 10100 16.0 14.9 107 14.9 14.9 100 KIRWIN 9550 -M 10.0 * 19.3 12.5 154 LITTLE WARM 9370 14.3 10.0 143 17.8 14.0 127 OWL CREEK 8975 5.6 3.7 151 8.5 6.9 123 SOUTH PASS 9040 15.1 15.4 98 15.9 18.7 85 ST. LAWRENCE ALT 8620 1.0 5.2 19 9.1 10.0 91 TOGWOTEE PASS 9580 33.4 24.0 139 34.2 25.8 133 TOWNSEND CREEK 8700 7.4 9.3 80 10.3 13.4 77 ----- ----- Basin Index (%) 117 110 BIGHORN BASIN BALD MTN. 9380 27.8 19.9 140 22.2 18.4 121 BEAR TRAP MEADOW 8200 10.3 2.9 355 12.6 9.5 133 BONE SPRINGS DIV 9350 23.8 16.1 148 18.8 16.8 112 GRAVE SPRINGS 8550 13.3 9.5 140 14.0 11.8 119 KIRWIN 9550 -M 10.0 * 19.3 12.5 154 MARQUETTE 8760 15.1 -M * 14.2 -M * MIDDLE POWDER 7760 19.3 12.4 156 15.8 12.9 122 OWL CREEK 8975 5.6 3.7 151 8.5 6.9 123 POWDER RIVER PASS 9480 15.8 10.2 155 18.1 13.8 131 SHELL CREEK 9580 20.8 15.4 135 18.4 14.9 123 TIMBER CREEK 7950 5.9 4.6 128 10.4 8.5 122 ----- ----- Basin Index (%) 151 125 SHOSHONE RIVER BLACKWATER 9780 34.3 23.8 144 31.3 21.9 143 EVENING STAR 9200 40.5 24.7 164 42.4 28.9 147 MARQUETTE 8760 15.1 -M * 14.2 -M * SYLVAN ROAD 7120 11.1 9.5 117 22.9 17.7 129 YOUNTS PEAK 8350 -M 15.2 * -M 16.7 * ----- ----- Basin Index (%) 148 141 POWDER RIVER BEAR TRAP MEADOW 8200 10.3 2.9 355 12.6 9.5 133 CLOUD PEAK RESERVOIR 9860 22.8 15.9 143 20.7 15.0 138 GRAVE SPRINGS 8550 13.3 9.5 140 14.0 11.8 119 HANSEN SAWMILL 8360 10.1 4.6 220 13.8 9.7 142 MIDDLE POWDER 7760 19.3 12.4 156 15.8 12.9 122 POWDER RIVER PASS 9480 15.8 10.2 155 18.1 13.8 131 SOLDIER PARK 8720 13.6 -M * 13.5 -M * ----- ----- Basin Index (%) 165 131 TONGUE RIVER BIG GOOSE 7990 13.7 9.2 149 17.0 12.8 133 BONE SPRINGS DIV 9350 23.8 16.1 148 18.8 16.8 112 BURGESS JUNCTION 7880 17.7 12.6 140 17.9 13.6 132 DOME LAKE 8880 17.5 11.8 148 17.2 15.0 115 LITTLE GOOSE 8870 15.8 -M * 19.3 -M * SUCKER CREEK 8880 19.1 12.7 150 21.7 15.9 136 TIE CREEK 6870 8.6 4.2 205 16.8 13.0 129 ----- ----- Basin Index (%) 151 126 BELLE FOURCHE COLE CANYON 5910 6.4 1.8 356 14.7 10.5 140 ----- ----- Basin Index (%) 356 140 CHEYENNE RIVER BASIN BLIND PARK 6890 5.8 4.0 145 17.3 13.2 131 NORTH RAPID CREEK 6130 5.5 4.0 138 16.1 11.2 144 ----- ----- Basin Index (%) 141 137 UPPER N. PLATTE ARAPAHO RIDGE 10960 28.2 21.3 132 29.4 24.4 120 BLACKHALL MTN 9820 39.3 -M * -M -M * COLUMBINE 9160 34.1 20.6 166 -M 27.0 * DIVIDE PEAK 8880 18.9 18.6 102 24.8 22.9 108 JOE WRIGHT 10120 25.4 22.4 113 34.0 27.9 122 LAPRELE CREEK 8375 7.9 7.8 101 12.5 13.8 91 MED BOW 10500 -M -M * 42.1 -M * NORTH FRENCH CREEK 10130 38.4 32.0 120 37.0 28.7 129 NEVER SUMMER 10280 27.1 20.7 131 21.7 -M * OLD BATTLE 10000 35.8 32.9 109 39.1 37.2 105 RAWAH 9020 11.0 8.3 133 18.8 15.6 121 SAGE CREEK BASIN 7850 8.4 5.4 156 13.6 15.3 89 SAND LAKE 10050 36.0 30.6 118 34.8 27.0 129 SOUTH BRUSH CREEK 8440 9.0 9.7 93 16.3 16.6 98 TOWER 10500 53.9 48.2 112 -M 42.3 * WEBBER SPRINGS 9250 28.1 21.8 129 30.3 28.5 106 WILLOW CREEK PASS 9540 16.7 13.3 126 16.6 14.5 114 ZIRKEL 9340 40.8 22.6 181 -M 29.8 * ----- ----- Basin Index (%) 125 113 SWEETWATER DEER PARK 9700 -M 16.3 * 20.3 21.7 94 LARSEN CREEK 9000 10.6 10.2 104 16.2 -M * SOUTH PASS 9040 15.1 15.4 98 15.9 18.7 85 ----- ----- Basin Index (%) 100 90 LOWER N. PLATTE CASPER MTN. 7900 18.3 14.4 127 17.2 16.7 103 LAPRELE CREEK 8375 7.9 7.8 101 12.5 13.8 91 RENO HILL 8400 19.2 14.0 137 22.6 17.3 131 WINDY PEAK 7900 8.0 6.5 123 13.4 11.7 115 ----- ----- Basin Index (%) 125 110 LARAMIE RIVER BROOKLYN LAKE 10240 32.0 22.3 143 32.1 22.9 140 CINNABAR PARK 9574 26.5 20.0 132 31.2 25.4 123 CROW CREEK 8330 4.5 .3 1500* 12.9 12.0 108 DEADMAN HILL 10220 26.3 17.2 153 25.2 19.0 133 RAWAH 9020 11.0 8.3 133 18.8 15.6 121 ROACH 9700 22.0 16.6 133 26.3 20.7 127 ----- ----- Basin Index (%) 144 127 S. PLATTE BLACK MOUNTAIN 8920 11.9 -M * -M -M * CROW CREEK 8330 4.5 .3 1500* 12.9 12.0 108 DEADMAN HILL 10220 26.3 17.2 153 25.2 19.0 133 ----- ----- Basin Index (%) 176* 123 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 5.7 3.9 146 18.8 16.1 117 DIVIDE PEAK 8880 18.9 18.6 102 24.8 22.9 108 ELK RIVER 8700 19.0 15.2 125 23.9 21.4 112 LITTLE SNAKE RIVER 8915 29.5 24.1 122 36.4 31.2 117 OLD BATTLE 10000 35.8 32.9 109 39.1 37.2 105 SAGE CREEK BASIN 7850 8.4 5.4 156 13.6 15.3 89 SANDSTONE RS 8150 8.6 10.0 86 19.2 19.6 98 WHISKEY PARK 8950 40.3 25.8 156 41.9 29.7 141 ----- ----- Basin Index (%) 122 113 UPPER GREEN RIVER BIG SANDY OPENING 9080 15.5 12.6 123 15.3 14.2 108 BLIND BULL SUM 8650 37.4 24.1 155 23.7 20.3 117 EAST RIM DIVIDE 7930 14.3 9.4 152 16.0 12.3 130 ELKHART PARK G.S. 9400 18.2 11.9 153 17.3 14.1 123 GROS VENTRE SUMMIT 8750 14.4 13.2 109 15.0 13.8 109 GUNSIGHT PASS 9820 21.3 13.7 155 19.4 15.0 129 KENDALL R.S. 7740 19.7 8.1 243 23.3 14.8 157 LOOMIS PARK 8240 24.1 12.8 188 25.3 18.0 141 NEW FORK LAKE 8340 13.7 8.6 159 13.6 11.4 119 POCKET CREEK 9360 12.1 -M * 12.9 -M * SNIDER BASIN 8060 16.3 10.6 154 19.9 14.8 134 SPRING CREEK DIVIDE 9000 37.4 23.5 159 33.5 24.9 135 TRIPLE PEAK 8500 34.9 19.2 182 37.8 26.5 143 ----- ----- Basin Index (%) 159 130 LOWER GREEN RIVER BLACKS FORK JCT 8870 5.4 -M * 14.1 -M * BUCK PASTURE 9700 12.9 -M * 17.9 -M * EF BLACKS FORK GS 9360 8.0 -M * 10.7 -M * HAMS FORK 7840 11.7 6.4 183 14.5 12.1 120 HEWINTA 9519 7.8 7.9 99 15.8 15.0 105 HICKERSON PARK 9145 2.9 5.3 55 9.4 11.1 85 HOLE-IN-ROCK 9150 3.3 5.7 58 10.4 10.6 98 INDIAN CREEK 9425 32.2 23.4 138 27.5 23.7 116 KELLEY R.S. 8180 17.0 12.4 137 21.1 19.0 111 SPIRIT LK 10235 9.4 -M * 14.8 -M * STEEL CREEK PARK 10200 20.9 16.2 129 17.3 17.8 97 ----- ----- Basin Index (%) 124 106 UPPER BEAR RIVER BEAR RIVER RS 8777 3.2 -M * 13.3 -M * BUG LAKE 7950 21.2 16.9 125 21.2 20.5 103 BURTS MILLER RANCH 8000 .0 -M * 7.2 -M * CHALK CREEK #1 8993 21.6 24.5 88 24.3 26.9 90 HAYDEN FORK 9212 11.1 11.4 97 22.3 22.5 99 KELLEY R.S. 8180 17.0 12.4 137 21.1 19.0 111 LILY LAKE 9156 11.0 10.4 106 16.0 18.4 87 MONTE CRISTO 8960 23.9 27.4 87 26.4 27.5 96 SALT RIVER SUMMIT 7760 14.8 9.4 157 19.5 17.4 112 ----- ----- Basin Index (%) 107 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.