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: MAY 30 , 2008 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 2.4 .0 32.8 26.9 122 COTTONWOOD CREEK 7670 10.4 6.2 168 31.6 35.6 89 GRAND TARGHEE 9260 55.4 -M * 44.4 -M * GRANITE CREEK 6770 2.8 1.7 165 28.2 24.8 114 GRASSY LAKE 7265 23.8 15.7 152 53.1 44.8 119 GROS VENTRE SUMMIT 8750 3.6 4.5 80 18.5 17.5 106 GUNSIGHT PASS 9820 7.2 -M * 19.5 -M * LEWIS LAKE DIVIDE 7850 26.3 19.4 136 45.0 45.2 100 PHILLIPS BENCH 8200 23.1 15.3 151 42.1 36.4 116 SALT RIVER SUMMIT 7760 -M .0 * -M 24.0 * SNAKE RIVER STATION 6920 .0 .0 100 33.8 28.2 120 SPRING CREEK DIVIDE 9000 16.3 16.3 100 29.8 32.9 91 THUMB DIVIDE 7980 3.8 2.9 131 26.0 24.7 105 TOGWOTEE PASS 9580 29.2 22.8 128 37.9 32.5 117 TWO OCEAN PLATEAU 9240 43.2 26.1 166 41.0 36.1 114 WILLOW CREEK 8380 21.7 15.8 137 49.4 42.3 117 ----- ----- Basin wide percent of average 139 110 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 28.2 21.1 134 31.7 26.8 118 BLACK BEAR 8170 44.0 27.6 159 52.2 50.0 104 CANYON 7870 6.9 2.0 345 25.8 20.3 127 FISHER CREEK 9100 42.0 30.8 136 48.6 46.4 105 MADISON PLATEAU 7750 23.8 10.2 233 40.0 34.1 117 NORTHEAST ENTRANCE 7350 .0 .5 0 19.5 17.4 112 PARKER PEAK 9400 30.1 19.4 155 34.7 23.0 151 SYLVAN LAKE 8420 20.5 12.7 161 35.6 28.7 124 THUMB DIVIDE 7980 3.8 2.9 131 26.0 24.7 105 TWO OCEAN PLATEAU 9240 43.2 26.1 166 41.0 36.1 114 WHISKEY CREEK 6800 10.6 1.8 589 31.1 27.1 115 WHITE MILL 8700 27.7 19.0 146 35.2 35.0 101 WOLVERINE 7650 .0 .0 100 20.4 18.1 113 ----- ----- Basin wide percent of average 161 114 WIND RIVER BURROUGHS CREEK 8750 11.2 4.2 267 24.8 22.4 111 COLD SPRINGS 9630 1.2 1.1 109 17.0 16.9 101 DEER PARK 9700 14.6 9.2 159 28.5 30.7 93 HOBBS PARK 10100 16.1 10.9 148 23.3 20.8 112 LITTLE WARM 9370 .9 2.4 38 20.1 19.8 102 SOUTH PASS 9040 8.6 7.3 118 25.3 25.9 98 ST. LAWRENCE ALT 8620 1.3 .7 186 15.3 15.0 102 TOGWOTEE PASS 9580 29.2 22.8 128 37.9 32.5 117 TOWNSEND CREEK 8700 1.5 2.0 75 20.0 18.6 108 ----- ----- Basin wide percent of average 140 105 BIGHORN BASIN BALD MTN. 9380 19.9 17.5 114 24.7 25.1 98 BEAR TRAP MEADOW 8200 .0 .0 100 18.4 14.0 131 BLACKWATER 9780 31.7 25.5 124 33.8 28.6 118 BONE SPRINGS DIV 9350 15.9 9.4 169 27.1 22.1 123 EVENING STAR 9200 30.2 27.4 110 44.5 34.1 130 GRAVE SPRINGS 8550 8.0 2.2 364 18.5 15.9 116 KIRWIN 9550 10.2 6.2 165 21.8 17.3 126 MARQUETTE 8760 8.2 4.7 174 20.1 17.7 114 MIDDLE POWDER 7760 5.9 3.5 169 17.7 18.9 94 OWL CREEK 8975 2.2 .6 367 12.9 10.9 118 POWDER RIVER PASS 9480 8.8 2.9 303 24.1 19.4 124 SHELL CREEK 9580 18.5 11.4 162 24.8 20.3 122 SYLVAN LAKE 8420 20.5 12.7 161 35.6 28.7 124 SYLVAN ROAD 7120 .0 .2 0 27.7 23.1 120 TIMBER CREEK 7950 3.6 .7 514 18.0 14.2 127 YOUNTS PEAK 8350 12.6 8.1 156 23.9 21.9 109 ----- ----- Basin wide percent of average 148 118 SHOSHONE RIVER BLACKWATER 9780 31.7 25.5 124 33.8 28.6 118 EVENING STAR 9200 30.2 27.4 110 44.5 34.1 130 KIRWIN 9550 10.2 6.2 165 21.8 17.3 126 MARQUETTE 8760 8.2 4.7 174 20.1 17.7 114 SYLVAN LAKE 8420 20.5 12.7 161 35.6 28.7 124 SYLVAN ROAD 7120 .0 .2 0 27.7 23.1 120 YOUNTS PEAK 8350 12.6 8.1 156 23.9 21.9 109 ----- ----- Basin wide percent of average 134 121 POWDER-TONGUE BEAR TRAP MEADOW 8200 .0 .0 100 18.4 14.0 131 BIG GOOSE 7990 6.3 3.9 162 21.9 16.2 135 BONE SPRINGS DIV 9350 15.9 9.4 169 27.1 22.1 123 BURGESS JUNCTION 7880 12.5 3.5 357 23.4 18.3 128 CLOUD PEAK RESERVOIR 9860 20.8 8.7 239 29.5 21.5 137 DOME LAKE 8880 10.8 3.9 277 26.0 20.4 127 GRAVE SPRINGS 8550 8.0 2.2 364 18.5 15.9 116 HANSEN SAWMILL 8360 3.7 .3 1233 21.7 13.9 156 MIDDLE POWDER 7760 5.9 3.5 169 17.7 18.9 94 POWDER RIVER PASS 9480 8.8 2.9 303 24.1 19.4 124 SUCKER CREEK 8880 15.9 4.3 370 28.1 21.3 132 TIE CREEK 6870 .0 .0 100 22.1 17.0 130 ----- ----- Basin wide percent of average 255 127 BELLE FOURCHE BLIND PARK 6890 .0 .0 100 18.4 17.7 104 COLE CANYON 5910 .0 .0 100 18.0 12.7 142 NORTH RAPID CREEK 6130 .0 .0 100 19.7 13.8 143 ----- ----- Basin wide percent of average * 127 UPPER N. PLATTE RIVER COLUMBINE 9160 6.7 2.9 231 35.3 32.1 110 DIVIDE PEAK 8880 7.0 4.5 156 30.1 27.3 110 ELK RIVER 8700 .2 1.7 12 29.4 25.8 114 JOE WRIGHT 10120 22.2 18.1 123 38.0 34.6 110 NORTH FRENCH CREEK 10130 27.4 25.4 108 38.9 34.1 114 OLD BATTLE 10000 33.5 27.1 124 49.1 44.0 112 SAGE CREEK BASIN 7850 .0 2.6 0 21.2 15.8 134 SOUTH BRUSH CREEK 8440 .1 2.1 5 23.2 23.5 99 TOWER 10500 41.9 44.2 95 51.8 49.8 104 WEBBER SPRINGS 9250 13.6 7.8 174 38.5 34.5 112 WILLOW CREEK PASS 9540 14.0 4.0 350 21.9 18.6 118 ----- ----- Basin wide percent of average 119 111 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 13.5 13.0 104 30.4 30.9 98 CASPER MTN. 7900 7.8 4.8 162 25.7 23.8 108 DEADMAN HILL 10220 17.6 12.3 143 27.5 24.5 112 DEER PARK 9700 14.6 9.2 159 28.5 30.7 93 LAPRELE CREEK 8375 -M 1.0 * 20.6 19.9 104 RENO HILL 8400 9.4 4.0 235 29.7 24.5 121 ROACH 9700 12.1 6.7 181 29.6 26.2 113 SAND LAKE 10050 32.1 27.4 117 40.2 34.0 118 SOUTH PASS 9040 8.6 7.3 118 25.3 25.9 98 WINDY PEAK 7900 .8 .2 400 18.4 16.9 109 ----- ----- Basin wide percent of average 137 107 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 100 21.3 20.8 102 DIVIDE PEAK 8880 7.0 4.5 156 30.1 27.3 110 OLD BATTLE 10000 33.5 27.1 124 49.1 44.0 112 SANDSTONE RS 8150 .0 .3 0 26.5 24.6 108 WHISKEY PARK 8950 29.9 15.3 195 44.2 37.6 118 ----- ----- Basin wide percent of average 149 111 UPPER GREEN RIVER BIG SANDY OPENING 9080 1.6 2.4 67 18.7 18.4 102 BLIND BULL SUM 8650 23.9 18.8 127 23.4 28.0 84 EAST RIM DIVIDE 7930 .0 2.5 0 14.9 15.9 94 ELKHART PARK G.S. 9400 2.6 4.1 63 15.8 18.9 84 GROS VENTRE SUMMIT 8750 3.6 4.5 80 18.5 17.5 106 GUNSIGHT PASS 9820 7.2 -M * 19.5 -M * KENDALL R.S. 7740 .1 .0 17.6 18.5 95 LOOMIS PARK 8240 .6 3.2 19 22.9 22.3 103 NEW FORK LAKE 8340 .0 .0 100 13.4 15.7 85 SNIDER BASIN 8060 .0 .5 0 18.1 20.3 89 SPRING CREEK DIVIDE 9000 16.3 16.3 100 29.8 32.9 91 TRIPLE PEAK 8500 14.2 6.4 222 36.6 31.8 115 ----- ----- Basin wide percent of average 107 96 LOWER GREEN RIVER HAMS FORK 7840 .2 .0 14.8 16.9 88 HEWINTA 9519 -M .8 * 21.7 20.2 107 HICKERSON PARK 9145 .0 .1 0 12.8 12.5 102 HOLE-IN-ROCK 9150 .0 .1 0 13.7 12.1 113 INDIAN CREEK 9425 18.8 15.9 118 -M 32.3 * KELLEY R.S. 8180 2.5 2.4 104 23.1 26.1 89 STEEL CREEK PARK 10200 17.6 12.7 139 24.5 23.0 107 ----- ----- Basin wide percent of average 125 100 UPPER BEAR RIVER BUG LAKE 7950 6.0 3.3 182 21.8 25.0 87 HAYDEN FORK 9212 .2 1.9 11 29.9 28.3 106 KELLEY R.S. 8180 2.5 2.4 104 23.1 26.1 89 LILY LAKE 9156 .5 1.8 28 23.9 23.9 100 MONTE CRISTO 8960 16.4 13.8 119 32.1 33.9 95 SALT RIVER SUMMIT 7760 -M .0 * -M 24.0 * TRIAL LAKE 9992 13.7 15.7 87 30.8 33.1 93 ----- ----- Basin wide percent of average 101 95 ----------------------------------------------------------------------------- -M = Missing data * = Data may not provide a valid measure of conditions. Units = inches for the Current and Average Snow Water Equivalent and Total Precipitation values If the Basin wide percent of average 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 Average represents the snow water equivalent found at selected SNOTEL sites in or near the basin compared to the average 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. Reference period for average conditions is 1961-90. Provisional data, subject to revision. ---------------------------------------------------------------------------- -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.