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: MAY 22 , 2008 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 6.9 3.3 209 31.9 26.2 122 COTTONWOOD CREEK 7670 14.1 10.4 136 30.5 34.7 88 GRAND TARGHEE 9260 55.0 -M * 42.7 -M * GRANITE CREEK 6770 5.9 5.0 118 26.0 24.1 108 GRASSY LAKE 7265 26.8 22.0 122 50.7 43.8 116 GROS VENTRE SUMMIT 8750 4.6 7.5 61 17.6 16.9 104 GUNSIGHT PASS 9820 7.3 -M * 18.5 -M * LEWIS LAKE DIVIDE 7850 28.3 24.9 114 42.8 44.3 97 PHILLIPS BENCH 8200 22.7 20.2 112 39.8 35.6 112 SALT RIVER SUMMIT 7760 .8 1.5 53 19.4 23.4 83 SNAKE RIVER STATION 6920 3.5 2.1 167 32.3 27.5 117 SPRING CREEK DIVIDE 9000 16.7 21.2 79 27.9 32.3 86 THUMB DIVIDE 7980 7.1 6.6 108 24.6 24.0 103 TOGWOTEE PASS 9580 28.2 25.8 109 36.4 31.6 115 TWO OCEAN PLATEAU 9240 41.9 29.0 144 39.3 35.1 112 WILLOW CREEK 8380 22.7 21.2 107 47.5 41.2 115 ----- ----- Basin wide percent of average 115 106 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 27.3 24.0 114 29.7 26.0 114 BLACK BEAR 8170 43.1 33.3 129 50.1 49.0 102 CANYON 7870 10.7 4.3 249 25.0 19.6 128 FISHER CREEK 9100 -M 34.0 * 46.5 45.2 103 MADISON PLATEAU 7750 25.2 15.6 162 38.4 33.0 116 NORTHEAST ENTRANCE 7350 .5 1.3 38 17.8 16.7 107 PARKER PEAK 9400 28.6 22.5 127 -M 22.0 * SYLVAN LAKE 8420 19.7 17.0 116 33.4 27.6 121 THUMB DIVIDE 7980 7.1 6.6 108 24.6 24.0 103 TWO OCEAN PLATEAU 9240 41.9 29.0 144 39.3 35.1 112 WHISKEY CREEK 6800 14.1 6.1 231 29.6 26.3 113 WHITE MILL 8700 27.6 22.5 123 33.5 34.0 99 WOLVERINE 7650 .1 1.1 9 18.1 17.4 104 ----- ----- Basin wide percent of average 134 109 WIND RIVER BURROUGHS CREEK 8750 10.1 7.6 133 22.2 21.6 103 COLD SPRINGS 9630 .2 1.6 12 14.7 16.2 91 DEER PARK 9700 13.4 15.1 89 25.9 29.8 87 HOBBS PARK 10100 14.5 14.6 99 20.9 19.9 105 LITTLE WARM 9370 .8 4.9 16 18.3 19.1 96 SOUTH PASS 9040 7.9 10.3 77 22.7 25.2 90 ST. LAWRENCE ALT 8620 .5 1.5 33 12.7 14.3 89 TOGWOTEE PASS 9580 28.2 25.8 109 36.4 31.6 115 TOWNSEND CREEK 8700 .6 3.5 17 17.0 17.9 95 ----- ----- Basin wide percent of average 90 98 BIGHORN BASIN BALD MTN. 9380 17.3 21.2 82 21.3 24.3 88 BEAR TRAP MEADOW 8200 .1 .0 14.6 13.2 111 BLACKWATER 9780 28.7 28.3 101 31.0 27.5 113 BONE SPRINGS DIV 9350 15.3 13.4 114 24.4 21.1 116 EVENING STAR 9200 28.0 30.6 92 41.4 33.0 125 GRAVE SPRINGS 8550 6.8 3.6 189 15.0 15.3 98 KIRWIN 9550 8.2 9.2 89 18.9 16.5 115 MARQUETTE 8760 5.0 7.0 71 16.1 16.7 96 MIDDLE POWDER 7760 8.7 7.2 121 15.0 18.2 82 OWL CREEK 8975 .4 1.2 33 9.9 10.2 97 POWDER RIVER PASS 9480 7.2 5.4 133 20.4 18.5 110 SHELL CREEK 9580 17.2 14.3 120 21.9 19.4 113 SYLVAN LAKE 8420 19.7 17.0 116 33.4 27.6 121 SYLVAN ROAD 7120 .4 .7 57 -M 22.5 * TIMBER CREEK 7950 .9 1.3 69 13.7 13.3 103 YOUNTS PEAK 8350 13.4 12.4 108 22.1 21.0 105 ----- ----- Basin wide percent of average 103 108 SHOSHONE RIVER BLACKWATER 9780 28.7 28.3 101 31.0 27.5 113 EVENING STAR 9200 28.0 30.6 92 41.4 33.0 125 KIRWIN 9550 8.2 9.2 89 18.9 16.5 115 MARQUETTE 8760 5.0 7.0 71 16.1 16.7 96 SYLVAN LAKE 8420 19.7 17.0 116 33.4 27.6 121 SYLVAN ROAD 7120 .4 .7 57 -M 22.5 * YOUNTS PEAK 8350 13.4 12.4 108 22.1 21.0 105 ----- ----- Basin wide percent of average 98 114 POWDER-TONGUE BEAR TRAP MEADOW 8200 .1 .0 14.6 13.2 111 BIG GOOSE 7990 6.9 7.3 95 18.9 15.5 122 BONE SPRINGS DIV 9350 15.3 13.4 114 24.4 21.1 116 BURGESS JUNCTION 7880 13.7 7.2 190 21.5 17.7 121 CLOUD PEAK RESERVOIR 9860 16.1 12.3 131 23.7 20.4 116 DOME LAKE 8880 9.1 7.2 126 22.2 19.6 113 GRAVE SPRINGS 8550 6.8 3.6 189 15.0 15.3 98 HANSEN SAWMILL 8360 .7 .9 78 -M 13.1 * MIDDLE POWDER 7760 8.7 7.2 121 15.0 18.2 82 POWDER RIVER PASS 9480 7.2 5.4 133 20.4 18.5 110 SUCKER CREEK 8880 15.3 7.6 201 25.5 20.4 125 TIE CREEK 6870 .5 .2 250 18.6 16.2 115 ----- ----- Basin wide percent of average 139 112 BELLE FOURCHE BLIND PARK 6890 -M .0 * 16.6 16.8 99 COLE CANYON 5910 .0 .0 100 14.7 11.9 124 NORTH RAPID CREEK 6130 -M .1 * 16.7 13.2 127 ----- ----- Basin wide percent of average * 115 UPPER N. PLATTE RIVER COLUMBINE 9160 13.9 8.0 174 35.1 31.4 112 DIVIDE PEAK 8880 13.3 8.7 153 29.1 26.6 109 ELK RIVER 8700 7.4 4.2 176 28.7 25.2 114 JOE WRIGHT 10120 24.6 21.8 113 36.7 33.5 110 NORTH FRENCH CREEK 10130 29.1 30.4 96 37.4 33.0 113 OLD BATTLE 10000 34.7 32.3 107 48.1 43.1 112 SAGE CREEK BASIN 7850 .0 5.0 0 20.6 15.4 134 SOUTH BRUSH CREEK 8440 .2 4.2 5 22.1 22.7 97 TOWER 10500 47.3 49.2 96 -M 48.7 * WEBBER SPRINGS 9250 18.9 13.2 143 38.0 33.7 113 WILLOW CREEK PASS 9540 17.8 7.9 225 21.5 17.8 121 ----- ----- Basin wide percent of average 112 112 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 15.1 18.7 81 28.3 30.0 94 CASPER MTN. 7900 10.4 8.2 127 22.2 22.8 97 DEADMAN HILL 10220 20.2 15.8 128 26.2 23.7 111 DEER PARK 9700 13.4 15.1 89 25.9 29.8 87 LAPRELE CREEK 8375 .0 2.1 0 16.8 19.1 88 RENO HILL 8400 12.1 6.7 181 26.4 23.5 112 ROACH 9700 16.5 10.2 162 28.8 25.3 114 SAND LAKE 10050 31.9 32.7 98 37.9 32.9 115 SOUTH PASS 9040 7.9 10.3 77 22.7 25.2 90 WINDY PEAK 7900 .8 .8 100 15.4 16.0 96 ----- ----- Basin wide percent of average 106 101 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 100 20.7 20.3 102 DIVIDE PEAK 8880 13.3 8.7 153 29.1 26.6 109 OLD BATTLE 10000 34.7 32.3 107 48.1 43.1 112 SANDSTONE RS 8150 1.9 1.7 112 26.0 24.0 108 WHISKEY PARK 8950 31.9 22.1 144 43.6 36.8 118 ----- ----- Basin wide percent of average 126 111 UPPER GREEN RIVER BIG SANDY OPENING 9080 1.0 6.1 16 16.2 17.8 91 BLIND BULL SUM 8650 24.8 22.5 110 21.3 27.2 78 EAST RIM DIVIDE 7930 .1 6.3 2 13.5 15.4 88 ELKHART PARK G.S. 9400 2.0 7.1 28 14.2 18.1 78 GROS VENTRE SUMMIT 8750 4.6 7.5 61 17.6 16.9 104 GUNSIGHT PASS 9820 7.3 -M * 18.5 -M * KENDALL R.S. 7740 .1 .0 16.0 18.0 89 LOOMIS PARK 8240 1.5 6.8 22 20.9 21.7 96 NEW FORK LAKE 8340 .0 1.2 0 -M 15.1 * SNIDER BASIN 8060 .4 4.5 9 16.4 19.9 82 SPRING CREEK DIVIDE 9000 16.7 21.2 79 27.9 32.3 86 TRIPLE PEAK 8500 14.4 12.4 116 34.2 31.0 110 ----- ----- Basin wide percent of average 69 91 LOWER GREEN RIVER HAMS FORK 7840 .1 .0 13.3 16.3 82 HEWINTA 9519 .1 2.3 4 21.4 19.6 109 HICKERSON PARK 9145 .8 .7 114 12.6 11.9 106 HOLE-IN-ROCK 9150 -M .6 * 13.4 11.5 117 INDIAN CREEK 9425 -M 20.4 * -M 31.6 * KELLEY R.S. 8180 4.6 6.1 75 21.9 25.4 86 STEEL CREEK PARK 10200 17.8 16.1 111 23.9 22.3 107 ----- ----- Basin wide percent of average 92 100 UPPER BEAR RIVER BUG LAKE 7950 8.8 7.0 126 20.4 24.3 84 HAYDEN FORK 9212 1.1 4.5 24 28.7 27.5 104 KELLEY R.S. 8180 4.6 6.1 75 21.9 25.4 86 LILY LAKE 9156 2.0 4.0 50 22.5 23.2 97 MONTE CRISTO 8960 18.2 18.8 97 31.2 33.1 94 SALT RIVER SUMMIT 7760 .8 1.5 53 19.4 23.4 83 TRIAL LAKE 9992 13.5 20.1 67 29.2 32.2 91 ----- ----- Basin wide percent of average 79 92 ----------------------------------------------------------------------------- -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.