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: MAY 29 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 .0 .0 0* 30.9 27.7 112 COTTONWOOD CREEK 7600 10.0 2.5 400 36.8 30.9 120 GRANITE CREEK 6770 2.8 2.8 104 28.2 29.7 96 GRASSY LAKE 7265 25.2 14.7 171 50.0 45.9 109 GROS VENTRE SUMMIT 8775 9.0 1.9 495 20.4 20.0 102 LEWIS LAKE DIVIDE 7860 29.2 21.7 135 46.5 46.8 100 PHILLIPS BENCH 8200 22.0 19.0 116 37.5 36.8 102 SALT RIVER SUMMIT 7600 .3 .0 * 23.2 21.2 109 SNAKE RIVER STATION 6920 .0 2.2 0 30.7 32.3 95 SPRING CREEK DIVIDE 9000 26.4 20.4 131 36.4 33.7 109 THUMB DIVIDE 7980 5.8 2.0 286 28.4 25.9 110 TOGWOTEE PASS 9580 -M 24.2 * 35.8 35.0 103 TWO OCEAN PLATEAU 9360 34.8 23.2 150 37.4 38.2 99 WILLOW CREEK 8450 19.0 20.9 92 49.2 39.8 124 ----- ----- Basin wide percent of average 140 106 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 23.2 20.4 114 28.7 24.7 116 BLACK BEAR 7950 51.5 29.2 177 60.8 50.3 121 CANYON 7940 3.2 2.4 130 23.2 18.7 124 FISHER CREEK 9100 36.8 32.8 113 44.3 46.7 96 MADISON PLATEAU 7750 -M 9.6 * 39.5 33.0 120 NORTHEAST ENTRANCE 7350 .2 .7 15* 18.2 16.4 112 PARKER PEAK 9400 17.7 19.4 91 -M 21.2 * SYLVAN LAKE 8420 18.9 15.4 123 36.5 26.0 141 THUMB DIVIDE 7980 5.8 2.0 286 28.4 25.9 110 TWO OCEAN PLATEAU 9360 34.8 23.2 150 37.4 38.2 99 WHISKEY CREEK 6800 8.1 2.8 300 30.4 27.4 111 WHITE MILL 8700 25.0 20.4 123 30.5 36.3 85 WOLVERINE 7650 .0 .6 0* 15.1 17.9 85 ----- ----- Basin wide percent of average 133 109 WIND RIVER BURROUGHS CREEK 8750 10.9 2.9 373 23.7 22.4 107 COLD SPRINGS 9630 9.9 .9 1226* 25.4 16.0 160 DEER PARK 9700 21.9 -M * 34.3 -M * HOBBS PARK 10100 22.7 10.7 213 29.5 20.7 144 LITTLE WARM 9620 10.0 1.7 619 25.4 19.2 133 SOUTH PASS 9040 17.9 11.2 159 31.4 23.7 133 ST. LAWRENCE ALT 8620 .2 .6 17* 22.0 14.6 151 TOGWOTEE PASS 9580 -M 24.2 * 35.8 35.0 103 TOWNSEND CREEK 8700 8.4 2.7 320 26.9 18.4 147 ----- ----- Basin wide percent of average 262 130 BIGHORN BASIN BALD MTN. 9375 21.5 19.7 110 26.2 24.9 106 BEAR TRAP MEADOW 7900 .0 .3 0* 19.2 13.6 141 BLACKWATER 9780 30.7 19.9 154 31.4 23.7 133 BONE SPRINGS DIV 9350 -M 9.7 * -M 21.9 * EVENING STAR 9200 30.9 26.4 117 41.4 29.7 140 GRAVE SPRINGS 8550 .5 3.7 12 19.7 16.0 124 KIRWIN 9550 11.7 6.0 195 21.9 16.0 137 MARQUETTE 8760 13.6 4.8 284 22.2 17.0 131 MIDDLE POWDER 7760 6.3 4.6 137 22.9 17.9 128 OWL CREEK 8975 -M .3 * 16.0 10.5 153 POWDER RIVER PASS 9480 5.5 2.3 246 23.4 17.9 131 SHELL CREEK 9580 13.9 12.4 113 21.7 19.5 111 SYLVAN LAKE 8420 18.9 15.4 123 36.5 26.0 141 SYLVAN ROAD 8120 .0 1.7 0 22.5 21.5 105 TIMBER CREEK 7950 -M .7 * 18.4 13.5 137 YOUNTS PEAK 8350 16.0 10.4 155 22.9 22.2 104 ----- ----- Basin wide percent of average 134 127 SHOSHONE RIVER BLACKWATER 9780 30.7 19.9 154 31.4 23.7 133 EVENING STAR 9200 30.9 26.4 117 41.4 29.7 140 KIRWIN 9550 11.7 6.0 195 21.9 16.0 137 MARQUETTE 8760 13.6 4.8 284 22.2 17.0 131 SYLVAN LAKE 8420 18.9 15.4 123 36.5 26.0 141 SYLVAN ROAD 8120 .0 1.7 0 22.5 21.5 105 YOUNTS PEAK 8350 16.0 10.4 155 22.9 22.2 104 ----- ----- Basin wide percent of average 145 128 POWDER-TONGUE BEAR TRAP MEADOW 7900 .0 .3 0* 19.2 13.6 141 BIG GOOSE 7990 1.7 -M * 19.9 -M * BONE SPRINGS DIV 9350 -M 9.7 * -M 21.9 * BURGESS JUNCTION 7880 4.8 3.9 124 18.9 17.4 109 CLOUD PEAK RESERVOIR 9860 17.5 9.7 181 26.2 20.9 126 DOME LAKE 8880 -M 5.1 * 18.7 19.9 94 GRAVE SPRINGS 8550 .5 3.7 12 19.7 16.0 124 HANSEN SAWMILL 8760 .0 1.4 0 18.2 12.9 143 MIDDLE POWDER 7760 6.3 4.6 137 22.9 17.9 128 POWDER RIVER PASS 9480 5.5 2.3 246 23.4 17.9 131 SUCKER CREEK 8880 8.2 5.3 158 23.5 20.2 117 TIE CREEK 6870 .0 -M * 19.4 16.7 117 ----- ----- Basin wide percent of average 138 122 BELLE FOURCHE BLIND PARK 6890 .0 .0 0* 21.5 17.9 121 NORTH RAPID CREEK 6130 .0 -M * 18.9 -M * WARREN PEAK 6520 .0 .0 0* -M 13.1 * ----- ----- Basin wide percent of average 0* 121* UPPER N. PLATTE RIVER COLUMBINE 9400 .0 4.8 0 30.2 30.7 99 DIVIDE PEAK 8800 4.1 4.6 90 32.8 30.5 108 ELK RIVER 8700 .0 1.7 0* 30.2 24.4 125 JOE WRIGHT 10120 18.4 18.4 100 34.9 34.5 102 NORTH FRENCH CREEK 10100 36.0 21.4 169 40.0 31.9 126 OLD BATTLE 10000 34.5 26.4 132 49.4 39.3 126 SOUTH BRUSH CREEK 8400 6.8 1.9 358 27.4 23.2 119 TOWER 10500 46.8 45.7 103 51.0 48.9 105 WEBBER SPRINGS 9200 8.1 12.2 67 35.8 33.5 107 WILLOW CREEK PASS 9540 6.5 3.8 172 17.7 18.2 98 ----- ----- Basin wide percent of average 115 111 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 19.9 15.0 133 34.2 26.9 128 CASPER MTN. 7900 .3 5.0 7 24.7 22.7 110 DEADMAN HILL 10220 14.9 11.7 127 25.5 24.4 105 DEER PARK 9700 21.9 -M * 34.3 -M * LAPRELE CREEK 8320 .0 1.5 0 23.4 17.9 131 RENO HILL 8400 .0 4.0 0 27.7 24.2 115 ROACH 9700 -M 9.0 * 27.2 29.9 91 SAND LAKE 10080 46.3 26.7 174 39.9 28.2 142 SOUTH PASS 9040 17.9 11.2 159 31.4 23.7 133 WINDY PEAK 7840 .0 .7 0* 20.7 15.5 134 ----- ----- Basin wide percent of average 131 120 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .2 .0 * 24.0 20.7 116 DIVIDE PEAK 8800 4.1 4.6 90 32.8 30.5 108 OLD BATTLE 10000 34.5 26.4 132 49.4 39.3 126 SANDSTONE RS 8150 .0 .5 0* 27.4 25.9 106 WHISKEY PARK 8950 -M 14.5 * 39.7 37.9 105 ----- ----- Basin wide percent of average 123* 113 UPPER GREEN RIVER BIG SANDY OPENING 9100 3.8 1.9 212 20.2 20.4 99 BLIND BULL SUM 8650 30.4 17.5 174 28.7 29.4 98 EAST RIM DIVIDE 7930 6.6 8.1 82 18.9 19.2 99 ELKHART PARK G.S. 9400 6.0 5.5 112 20.0 20.2 100 GROS VENTRE SUMMIT 8775 9.0 1.9 495 20.4 20.0 102 KENDALL R.S. 7740 .2 .0 * 20.5 19.5 106 LOOMIS PARK 8240 -M 2.0 * 25.4 23.7 108 NEW FORK LAKE 8340 .0 1.2 0* 18.2 18.2 100 SNIDER BASIN 8250 2.5 1.5 167* 23.2 19.2 122 SPRING CREEK DIVIDE 9000 26.4 20.4 131 36.4 33.7 109 TRIPLE PEAK 8500 16.5 16.0 104 39.5 38.5 103 ----- ----- Basin wide percent of average 138 104 LOWER GREEN RIVER HAMS FORK 7840 .0 .0 100* 18.7 16.9 111 HEWINTA 9500 .0 .0 100* 20.5 18.9 110 HICKERSON PARK 9150 .0 .3 0* 16.0 15.0 107 HOLE-IN-ROCK 9150 .0 .3 0* 16.0 15.0 107 INDIAN CREEK 9425 28.0 18.9 149 35.0 32.0 110 KELLEY R.S. 8180 2.3 1.9 123 24.9 23.7 106 STEEL CREEK PARK 10100 17.9 13.0 138 24.9 19.5 128 ----- ----- Basin wide percent of average 142* 111 UPPER BEAR RIVER BUG LAKE 7950 8.2 3.8 222 29.7 24.7 121 HAYDEN FORK 9400 .9 .3 400* 29.2 25.9 113 KELLEY R.S. 8180 2.3 1.9 123 24.9 23.7 106 LILY LAKE 9050 .7 1.9 37 26.2 20.9 126 MONTE CRISTO 8960 26.9 12.0 225 38.5 33.4 116 SALT RIVER SUMMIT 7600 .3 .0 * 23.2 21.2 109 TRIAL LAKE 9960 17.0 13.6 126 32.0 31.4 102 ----- ----- Basin wide percent of average 169 113 ----------------------------------------------------------------------------- -M = Missing data * = Data may not provide a valid measure of conditions. 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.