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 SATURDAY: APRIL 19 , 2014 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER BASE CAMP 7030 21.6 12.0 180 27.3 21.6 126 BLACK BEAR 8170 43.6 36.8 118 41.7 39.6 105 BLIND BULL SUM 8650 37.4 24.0 156 23.7 20.1 118 COTTONWOOD CREEK 7670 30.1 18.8 160 35.2 25.7 137 EAST RIM DIVIDE 7930 16.0 9.6 167 16.0 12.2 131 GRAND TARGHEE 9260 52.0 41.9 124 -M 32.4 * GRANITE CREEK 6770 22.3 11.1 201 24.7 20.2 122 GRASSY LAKE 7265 42.2 31.5 134 41.6 37.2 112 GROS VENTRE SUMMIT 8750 14.5 13.2 110 15.0 13.6 110 GUNSIGHT PASS 9820 21.6 13.6 159 19.4 14.8 131 LEWIS LAKE DIVIDE 7850 41.4 30.3 137 41.7 36.6 114 PHILLIPS BENCH 8200 34.7 25.7 135 35.3 29.0 122 SALT RIVER SUMMIT 7760 16.0 10.0 160 19.5 17.3 113 SNAKE RIVER STATION 6920 19.1 11.5 166 27.0 23.4 115 SPRING CREEK DIVIDE 9000 36.8 23.5 157 33.5 24.6 136 THUMB DIVIDE 7980 21.3 14.5 147 20.3 19.6 104 TOGWOTEE PASS 9580 33.4 23.7 141 34.2 25.5 134 TWO OCEAN PLATEAU 9240 41.4 27.9 148 35.1 28.4 124 WILLOW CREEK 8380 41.2 26.8 154 42.4 35.1 121 YOUNTS PEAK 8350 -M 15.1 * -M 16.6 * ----- ----- Basin Index (%) 144 120 MADISON-GALLATIN BLACK BEAR 8170 43.6 36.8 118 41.7 39.6 105 CANYON 7870 16.0 12.3 130 17.8 16.9 105 MADISON PLATEAU 7750 25.8 22.9 113 26.2 27.4 96 WEST YELLOWSTONE 6700 10.7 7.8 137 17.0 15.0 113 WHISKEY CREEK 6800 17.9 15.2 118 22.1 21.1 105 ----- ----- Basin Index (%) 120 104 YELLOWSTONE BEARTOOTH LAKE 9360 33.2 23.2 143 31.3 20.6 152 BURNT MTN 5880 9.8 .0 * 21.2 14.1 150 CANYON 7870 16.0 12.3 130 17.8 16.9 105 COLE CREEK 7850 25.2 16.1 157 18.3 14.4 127 EVENING STAR 9200 40.8 24.9 164 42.2 28.6 148 FISHER CREEK 9100 45.5 32.3 141 41.3 33.2 124 NORTHEAST ENTRANCE 7350 14.8 7.0 211 16.7 12.9 129 PARKER PEAK 9400 34.6 20.8 166 30.7 18.6 165 SYLVAN LAKE 8420 24.9 20.4 122 30.4 23.4 130 THUMB DIVIDE 7980 21.3 14.5 147 20.3 19.6 104 TWO OCEAN PLATEAU 9240 41.4 27.9 148 35.1 28.4 124 WHITE MILL 8700 34.7 23.6 147 30.4 24.8 123 WOLVERINE 7650 16.1 7.5 215 18.3 12.8 143 ----- ----- Basin Index (%) 155 132 WIND RIVER BURROUGHS CREEK 8750 -M 13.1 * -M 16.7 * CASTLE CREEK 8400 9.6 -M * 13.0 -M * COLD SPRINGS 9630 9.1 4.9 186 13.6 10.8 126 DEER PARK 9700 -M 16.2 * 20.3 21.3 95 HOBBS PARK 10100 16.1 14.8 109 14.8 14.6 101 KIRWIN 9550 20.5 10.0 205 19.2 12.3 156 LITTLE WARM 9370 14.7 10.2 144 17.7 13.8 128 OWL CREEK 8975 6.8 4.2 162 8.5 6.7 127 SOUTH PASS 9040 15.8 15.6 101 15.9 18.5 86 ST. LAWRENCE ALT 8620 2.6 5.4 48 9.3 9.8 95 TOGWOTEE PASS 9580 33.4 23.7 141 34.2 25.5 134 TOWNSEND CREEK 8700 8.0 9.6 83 10.3 13.1 79 ----- ----- Basin Index (%) 129 112 BIGHORN BASIN BALD MTN. 9380 28.1 19.7 143 22.2 18.1 123 BEAR TRAP MEADOW 8200 11.2 3.5 320 12.6 9.3 135 BONE SPRINGS DIV 9350 23.9 16.2 148 18.9 16.6 114 GRAVE SPRINGS 8550 13.7 9.6 143 14.1 11.5 123 KIRWIN 9550 20.5 10.0 205 19.2 12.3 156 MARQUETTE 8760 -M -M * 14.2 -M * MIDDLE POWDER 7760 19.7 12.5 158 15.9 12.7 125 OWL CREEK 8975 6.8 4.2 162 8.5 6.7 127 POWDER RIVER PASS 9480 16.6 10.2 163 18.0 13.6 132 SHELL CREEK 9580 21.2 15.3 139 18.3 14.8 124 TIMBER CREEK 7950 6.9 4.9 141 10.4 8.4 124 ----- ----- Basin Index (%) 159 128 SHOSHONE RIVER BLACKWATER 9780 34.4 23.8 145 31.2 21.7 144 EVENING STAR 9200 40.8 24.9 164 42.2 28.6 148 MARQUETTE 8760 -M -M * 14.2 -M * SYLVAN ROAD 7120 12.7 10.0 127 22.9 17.5 131 YOUNTS PEAK 8350 -M 15.1 * -M 16.6 * ----- ----- Basin Index (%) 150 142 POWDER RIVER BEAR TRAP MEADOW 8200 11.2 3.5 320 12.6 9.3 135 CLOUD PEAK RESERVOIR 9860 22.8 15.7 145 20.7 14.7 141 GRAVE SPRINGS 8550 13.7 9.6 143 14.1 11.5 123 HANSEN SAWMILL 8360 10.7 5.0 214 13.9 9.5 146 MIDDLE POWDER 7760 19.7 12.5 158 15.9 12.7 125 POWDER RIVER PASS 9480 16.6 10.2 163 18.0 13.6 132 SOLDIER PARK 8720 14.2 -M * 13.5 -M * ----- ----- Basin Index (%) 168 134 TONGUE RIVER BIG GOOSE 7990 14.0 9.4 149 17.0 12.5 136 BONE SPRINGS DIV 9350 23.9 16.2 148 18.9 16.6 114 BURGESS JUNCTION 7880 17.9 12.4 144 18.0 13.4 134 DOME LAKE 8880 17.9 11.8 152 17.1 14.8 116 LITTLE GOOSE 8870 -M -M * -M -M * SUCKER CREEK 8880 19.4 12.7 153 21.7 15.6 139 TIE CREEK 6870 9.3 4.5 207 16.8 12.7 132 ----- ----- Basin Index (%) 153 128 BELLE FOURCHE COLE CANYON 5910 7.1 2.2 323 14.7 10.3 143 ----- ----- Basin Index (%) 323 143 CHEYENNE RIVER BASIN BLIND PARK 6890 7.2 4.2 171 17.4 12.8 136 NORTH RAPID CREEK 6130 6.7 4.4 152 16.1 10.6 152 ----- ----- Basin Index (%) 162 143 UPPER N. PLATTE ARAPAHO RIDGE 10960 30.2 21.4 141 29.4 24.3 121 BLACKHALL MTN 9820 39.6 -M * -M -M * COLUMBINE 9160 36.2 20.7 175 -M 26.8 * DIVIDE PEAK 8880 20.1 19.1 105 24.7 22.7 109 JOE WRIGHT 10120 25.2 22.2 114 33.9 27.6 123 LAPRELE CREEK 8375 9.0 8.3 108 12.5 13.5 93 MED BOW 10500 -M -M * 39.3 -M * NORTH FRENCH CREEK 10130 38.8 32.0 121 36.9 28.3 130 NEVER SUMMER 10280 27.0 20.6 131 21.4 -M * OLD BATTLE 10000 35.9 32.5 110 39.1 36.8 106 RAWAH 9020 12.4 8.6 144 18.8 15.5 121 SAGE CREEK BASIN 7850 9.7 6.6 147 13.6 15.2 89 SAND LAKE 10050 36.0 30.4 118 34.8 26.6 131 SOUTH BRUSH CREEK 8440 10.0 9.9 101 16.3 16.3 100 TOWER 10500 54.1 47.8 113 -M 41.8 * WEBBER SPRINGS 9250 26.7 22.3 120 30.3 28.2 107 WILLOW CREEK PASS 9540 16.5 12.9 128 16.4 14.3 115 ZIRKEL 9340 42.0 22.8 184 -M 29.7 * ----- ----- Basin Index (%) 127 114 SWEETWATER DEER PARK 9700 -M 16.2 * 20.3 21.3 95 LARSEN CREEK 9000 11.7 10.4 112 16.3 -M * SOUTH PASS 9040 15.8 15.6 101 15.9 18.5 86 ----- ----- Basin Index (%) 106 91 LOWER N. PLATTE CASPER MTN. 7900 19.2 14.5 132 17.3 16.4 105 LAPRELE CREEK 8375 9.0 8.3 108 12.5 13.5 93 RENO HILL 8400 20.1 14.0 144 22.6 16.9 134 WINDY PEAK 7900 8.9 6.7 133 13.4 11.5 117 ----- ----- Basin Index (%) 131 113 LARAMIE RIVER BROOKLYN LAKE 10240 32.4 22.1 147 32.0 22.6 142 CINNABAR PARK 9574 26.6 20.3 131 31.3 25.3 124 CROW CREEK 8330 6.0 1.1 545 13.0 12.0 108 DEADMAN HILL 10220 26.1 16.8 155 25.2 18.8 134 RAWAH 9020 12.4 8.6 144 18.8 15.5 121 ROACH 9700 22.7 16.5 138 26.3 20.4 129 ----- ----- Basin Index (%) 148 128 S. PLATTE BLACK MOUNTAIN 8920 12.8 -M * -M -M * CROW CREEK 8330 6.0 1.1 545 13.0 12.0 108 DEADMAN HILL 10220 26.1 16.8 155 25.2 18.8 134 ----- ----- Basin Index (%) 179 124 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 6.7 4.9 137 18.8 16.0 118 DIVIDE PEAK 8880 20.1 19.1 105 24.7 22.7 109 ELK RIVER 8700 20.1 15.8 127 23.9 21.2 113 LITTLE SNAKE RIVER 8915 30.4 24.7 123 36.4 31.2 117 OLD BATTLE 10000 35.9 32.5 110 39.1 36.8 106 SAGE CREEK BASIN 7850 9.7 6.6 147 13.6 15.2 89 SANDSTONE RS 8150 9.7 10.4 93 19.2 19.4 99 WHISKEY PARK 8950 41.1 26.0 158 41.9 29.5 142 ----- ----- Basin Index (%) 124 113 UPPER GREEN RIVER BIG SANDY OPENING 9080 15.7 12.7 124 15.3 14.0 109 BLIND BULL SUM 8650 37.4 24.0 156 23.7 20.1 118 EAST RIM DIVIDE 7930 16.0 9.6 167 16.0 12.2 131 ELKHART PARK G.S. 9400 18.3 11.9 154 17.3 14.0 124 GROS VENTRE SUMMIT 8750 14.5 13.2 110 15.0 13.6 110 GUNSIGHT PASS 9820 21.6 13.6 159 19.4 14.8 131 KENDALL R.S. 7740 20.5 8.8 233 23.2 14.7 158 LOOMIS PARK 8240 24.6 13.1 188 25.3 17.9 141 NEW FORK LAKE 8340 14.9 9.0 166 13.7 11.2 122 POCKET CREEK 9360 12.6 -M * 12.9 -M * SNIDER BASIN 8060 17.0 10.9 156 19.8 14.7 135 SPRING CREEK DIVIDE 9000 36.8 23.5 157 33.5 24.6 136 TRIPLE PEAK 8500 35.5 19.3 184 37.7 26.2 144 ----- ----- Basin Index (%) 161 131 LOWER GREEN RIVER BLACKS FORK JCT 8870 6.6 -M * 14.1 -M * BUCK PASTURE 9700 14.1 -M * 17.8 -M * EF BLACKS FORK GS 9360 8.4 -M * 10.7 -M * HAMS FORK 7840 12.9 7.1 182 14.4 11.9 121 HEWINTA 9519 8.6 8.3 104 15.1 14.9 101 HICKERSON PARK 9145 4.0 5.6 71 9.4 11.0 85 HOLE-IN-ROCK 9150 4.2 6.0 70 10.4 10.5 99 INDIAN CREEK 9425 33.0 23.2 142 27.4 23.5 117 KELLEY R.S. 8180 17.8 12.9 138 21.2 18.8 113 SPIRIT LK 10235 9.7 -M * 14.8 -M * STEEL CREEK PARK 10200 20.9 16.2 129 17.2 17.6 98 ----- ----- Basin Index (%) 128 106 UPPER BEAR RIVER BEAR RIVER RS 8777 4.8 -M * 13.3 -M * BUG LAKE 7950 22.3 17.6 127 21.2 20.2 105 BURTS MILLER RANCH 8000 .4 -M * 7.2 -M * CHALK CREEK #1 8993 22.5 24.7 91 24.3 26.6 91 HAYDEN FORK 9212 12.7 12.2 104 22.3 22.3 100 KELLEY R.S. 8180 17.8 12.9 138 21.2 18.8 113 LILY LAKE 9156 12.1 11.0 110 16.0 18.2 88 MONTE CRISTO 8960 25.3 27.6 92 26.4 27.2 97 SALT RIVER SUMMIT 7760 16.0 10.0 160 19.5 17.3 113 ----- ----- 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.