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 SUNDAY: MAY 30 , 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 .6 0* 30.9 27.9 112 COTTONWOOD CREEK 7600 9.5 1.7 553* 37.2 31.0 120 GRANITE CREEK 6770 1.9 2.4 80 28.4 29.7 96 GRASSY LAKE 7265 24.2 13.9 176 50.3 46.2 109 GROS VENTRE SUMMIT 8775 8.2 1.2 684* 20.4 20.0 103 LEWIS LAKE DIVIDE 7860 27.9 21.0 133 46.5 46.9 100 PHILLIPS BENCH 8200 21.2 18.7 114 37.7 36.9 102 SALT RIVER SUMMIT 7600 .3 .0 * 23.5 21.4 111 SNAKE RIVER STATION 6920 .0 1.4 0* 30.7 32.4 95 SPRING CREEK DIVIDE 9000 26.0 19.9 131 36.8 33.8 110 THUMB DIVIDE 7980 4.6 1.4 329* 28.5 26.0 110 TOGWOTEE PASS 9580 -M 23.9 * 35.9 35.2 103 TWO OCEAN PLATEAU 9360 34.4 23.0 150 37.7 38.3 99 WILLOW CREEK 8450 18.2 20.4 90 49.7 39.8 125 ----- ----- Basin wide percent of average 141 107 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 22.9 20.2 114 28.5 24.9 115 BLACK BEAR 7950 50.5 28.7 176 61.4 50.4 122 CANYON 7940 2.5 2.2 120 23.4 18.9 124 FISHER CREEK 9100 36.7 32.4 113 44.4 46.8 96 MADISON PLATEAU 7750 -M 9.0 * 39.9 33.2 121 NORTHEAST ENTRANCE 7350 .0 .5 0* 18.4 16.4 112 PARKER PEAK 9400 17.2 19.2 90 -M 21.4 * SYLVAN LAKE 8420 18.2 15.0 123 36.4 26.2 140 THUMB DIVIDE 7980 4.6 1.4 329* 28.5 26.0 110 TWO OCEAN PLATEAU 9360 34.4 23.0 150 37.7 38.3 99 WHISKEY CREEK 6800 7.5 2.3 337 30.7 27.5 112 WHITE MILL 8700 24.5 20.2 122 30.7 36.4 85 WOLVERINE 7650 .0 .5 0* 15.5 18.0 87 ----- ----- Basin wide percent of average 133 110 WIND RIVER BURROUGHS CREEK 8750 10.1 2.7 389 23.9 22.4 107 COLD SPRINGS 9630 9.4 .6 1551* 25.5 16.0 160 DEER PARK 9700 21.2 -M * 34.3 -M * HOBBS PARK 10100 22.4 10.2 219 29.5 20.7 143 LITTLE WARM 9620 9.2 1.4 708* 25.5 19.2 133 SOUTH PASS 9040 16.5 10.9 153 31.4 23.9 132 ST. LAWRENCE ALT 8620 .0 .5 0* 22.2 14.7 152 TOGWOTEE PASS 9580 -M 23.9 * 35.9 35.2 103 TOWNSEND CREEK 8700 7.3 2.4 301 26.9 18.5 146 ----- ----- Basin wide percent of average 264* 130 BIGHORN BASIN BALD MTN. 9375 21.0 19.2 110 26.2 25.2 105 BEAR TRAP MEADOW 7900 .0 .3 0* 19.2 13.7 140 BLACKWATER 9780 30.4 19.7 156 31.5 23.9 133 BONE SPRINGS DIV 9350 16.0 9.2 174 26.4 22.0 120 EVENING STAR 9200 30.2 26.2 116 41.7 29.7 141 GRAVE SPRINGS 8550 .2 3.2 4 19.9 16.0 124 KIRWIN 9550 11.2 5.8 197 21.9 16.2 137 MARQUETTE 8760 13.0 4.6 283 22.2 17.2 130 MIDDLE POWDER 7760 5.3 3.9 134 23.0 18.0 128 OWL CREEK 8975 .6 .3 200* 16.2 10.6 153 POWDER RIVER PASS 9480 4.6 1.9 243 23.4 18.0 131 SHELL CREEK 9580 12.7 12.0 107 21.7 19.7 111 SYLVAN LAKE 8420 18.2 15.0 123 36.4 26.2 140 SYLVAN ROAD 8120 .0 1.4 0 22.9 21.7 106 TIMBER CREEK 7950 1.7 .5 321* 18.4 13.6 136 YOUNTS PEAK 8350 14.5 10.0 146 23.2 22.2 105 ----- ----- Basin wide percent of average 136 126 SHOSHONE RIVER BLACKWATER 9780 30.4 19.7 156 31.5 23.9 133 EVENING STAR 9200 30.2 26.2 116 41.7 29.7 141 KIRWIN 9550 11.2 5.8 197 21.9 16.2 137 MARQUETTE 8760 13.0 4.6 283 22.2 17.2 130 SYLVAN LAKE 8420 18.2 15.0 123 36.4 26.2 140 SYLVAN ROAD 8120 .0 1.4 0 22.9 21.7 106 YOUNTS PEAK 8350 14.5 10.0 146 23.2 22.2 105 ----- ----- Basin wide percent of average 143 128 POWDER-TONGUE BEAR TRAP MEADOW 7900 .0 .3 0* 19.2 13.7 140 BIG GOOSE 7990 .3 -M * 19.9 -M * BONE SPRINGS DIV 9350 16.0 9.2 174 26.4 22.0 120 BURGESS JUNCTION 7880 3.7 3.4 106 18.9 17.5 109 CLOUD PEAK RESERVOIR 9860 16.2 9.4 175 26.4 21.2 125 DOME LAKE 8880 -M 4.8 * 18.5 20.0 93 GRAVE SPRINGS 8550 .2 3.2 4 19.9 16.0 124 HANSEN SAWMILL 8760 .0 1.2 0 18.2 13.0 141 MIDDLE POWDER 7760 5.3 3.9 134 23.0 18.0 128 POWDER RIVER PASS 9480 4.6 1.9 243 23.4 18.0 131 SUCKER CREEK 8880 7.0 4.8 144 23.4 20.4 116 TIE CREEK 6870 .0 -M * 19.4 16.9 116 ----- ----- Basin wide percent of average 143 121 BELLE FOURCHE BLIND PARK 6890 .0 .6 0* 21.5 18.0 120 NORTH RAPID CREEK 6130 .0 -M * 18.9 -M * WARREN PEAK 6520 .0 .7 0* -M 13.2 * ----- ----- Basin wide percent of average 0* 120* UPPER N. PLATTE RIVER COLUMBINE 9400 .0 4.1 0 30.5 30.9 100 DIVIDE PEAK 8800 2.8 4.1 66 32.8 30.7 108 ELK RIVER 8700 .0 1.2 0* 31.2 24.4 128 JOE WRIGHT 10120 17.7 17.9 99 35.5 34.8 103 NORTH FRENCH CREEK 10100 35.2 21.0 168 40.3 32.2 126 OLD BATTLE 10000 33.8 25.7 132 49.4 39.4 126 SOUTH BRUSH CREEK 8400 7.0 1.7 438 27.7 23.2 120 TOWER 10500 46.3 45.3 103 51.3 49.0 105 WEBBER SPRINGS 9200 7.3 11.6 63 35.7 33.7 106 WILLOW CREEK PASS 9540 5.5 3.3 167 18.0 18.2 99 ----- ----- Basin wide percent of average 115 112 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 19.2 14.4 134 33.9 26.9 127 CASPER MTN. 7900 .3 4.5 5 24.7 22.7 109 DEADMAN HILL 10220 14.0 11.2 126 25.9 24.4 107 DEER PARK 9700 21.2 -M * 34.3 -M * LAPRELE CREEK 8320 .0 1.4 0 23.4 17.9 131 RENO HILL 8400 .0 3.7 0 27.7 24.2 115 ROACH 9700 -M 8.5 * 27.4 30.0 92 SAND LAKE 10080 46.3 25.9 179 39.9 28.2 142 SOUTH PASS 9040 16.5 10.9 153 31.4 23.9 132 WINDY PEAK 7840 .0 .5 0* 20.5 15.5 133 ----- ----- Basin wide percent of average 134 120 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .2 .0 * 24.0 20.9 116 DIVIDE PEAK 8800 2.8 4.1 66 32.8 30.7 108 OLD BATTLE 10000 33.8 25.7 132 49.4 39.4 126 SANDSTONE RS 8150 .0 .3 0* 27.2 25.9 106 WHISKEY PARK 8950 30.4 13.6 223 39.8 38.2 105 ----- ----- Basin wide percent of average 153 112 UPPER GREEN RIVER BIG SANDY OPENING 9100 2.9 1.2 242* 20.2 20.5 99 BLIND BULL SUM 8650 29.2 17.2 170 28.9 29.4 98 EAST RIM DIVIDE 7930 5.8 7.8 76 18.9 19.2 99 ELKHART PARK G.S. 9400 5.1 5.1 100 20.4 20.2 101 GROS VENTRE SUMMIT 8775 8.2 1.2 684* 20.4 20.0 103 KENDALL R.S. 7740 .2 .0 * 20.7 19.7 106 LOOMIS PARK 8240 -M 1.4 * 25.4 23.7 108 NEW FORK LAKE 8340 .0 .9 0* 18.2 18.2 100 SNIDER BASIN 8250 1.7 1.0 170* 23.5 19.2 124 SPRING CREEK DIVIDE 9000 26.0 19.9 131 36.8 33.8 110 TRIPLE PEAK 8500 15.7 15.5 102 39.7 38.7 103 ----- ----- Basin wide percent of average 136* 105 LOWER GREEN RIVER HAMS FORK 7840 .0 .0 100* 18.9 16.9 113 HEWINTA 9500 .0 .0 100* 20.7 18.9 110 HICKERSON PARK 9150 .2 .2 100* 16.2 15.1 107 HOLE-IN-ROCK 9150 .0 .3 0* 16.2 15.1 107 INDIAN CREEK 9425 27.4 18.4 150 35.3 32.3 110 KELLEY R.S. 8180 1.5 1.2 126* 25.2 23.7 107 STEEL CREEK PARK 10100 17.2 12.6 137 24.9 19.7 127 ----- ----- Basin wide percent of average 143* 112 UPPER BEAR RIVER BUG LAKE 7950 7.0 3.3 213 29.9 24.9 121 HAYDEN FORK 9400 .3 .2 300* 29.4 26.0 114 KELLEY R.S. 8180 1.5 1.2 126* 25.2 23.7 107 LILY LAKE 9050 .7 1.7 44 26.4 21.0 126 MONTE CRISTO 8960 25.5 11.4 226 38.7 33.5 116 SALT RIVER SUMMIT 7600 .3 .0 * 23.5 21.4 111 TRIAL LAKE 9960 16.5 13.1 126 32.3 31.5 103 ----- ----- 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.