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: OCTOBER 18 , 1998 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 .0 .1 0* .4 1.1 36 COTTONWOOD CREEK 7600 .2 .1 200* 2.3 1.2 192 GRANITE CREEK 6770 .0 .1 0* .2 1.3 15 GRASSY LAKE 7265 .0 .2 0* .2 1.8 11 GROS VENTRE SUMMIT 8775 .6 .2 300* 1.5 .9 167 LEWIS LAKE DIVIDE 7860 .0 .2 0* .3 1.9 16 PHILLIPS BENCH 8200 .1 .2 50* .4 1.4 29 SALT RIVER SUMMIT 7600 .1 .0 * 1.3 .9 144 SNAKE RIVER STATION 6920 .1 .1 100* .3 1.3 23 SPRING CREEK DIVIDE 9000 .3 .2 150* 1.3 1.2 108 THUMB DIVIDE 7980 .2 .1 200* .2 1.0 20 TOGWOTEE PASS 9580 .9 1.2 75* 1.3 1.4 93 TWO OCEAN PLATEAU 9360 .7 1.7 41* 1.2 1.5 80 WILLOW CREEK 8450 .3 .2 150* 2.3 1.5 153 ----- ----- Basin wide percent of average 74* 72 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 .9 1.8 50* .7 1.0 70 BLACK BEAR 7950 .4 1.5 27* .7 1.9 37 CANYON 7940 .0 .3 0* .1 1.0 10 FISHER CREEK 9100 .3 1.2 25* .7 1.6 44 MADISON PLATEAU 7750 .3 .7 43* .4 1.4 29 NORTHEAST ENTRANCE 7350 .0 .1 0* .4 .8 50 PARKER PEAK 9400 .1 2.1 5* .9 1.2 75 SYLVAN LAKE 8420 .0 1.3 0* 1.0 1.4 71 THUMB DIVIDE 7980 .2 .1 200* .2 1.0 20 TWO OCEAN PLATEAU 9360 .7 1.7 41* 1.2 1.5 80 WHISKEY CREEK 6800 .2 .3 67* .2 1.2 17 WHITE MILL 8700 .0 1.0 0* .5 1.5 33 WOLVERINE 7650 .0 .1 0* 1.1 .9 122 ----- ----- Basin wide percent of average 25* 49 WIND RIVER BURROUGHS CREEK 8750 .5 .4 125* .9 .9 100 COLD SPRINGS 9630 .9 .4 225* 2.0 1.0 200 DEER PARK 9700 1.6 -M * 2.6 -M * HOBBS PARK 10100 3.2 1.0 320* 3.9 1.1 355 LITTLE WARM 9620 .5 .5 100* 1.4 1.0 140 SOUTH PASS 9040 1.0 1.5 67* 2.3 1.2 192 ST. LAWRENCE ALT 8620 1.1 .4 275* 2.7 .9 300 TOGWOTEE PASS 9580 .9 1.2 75* 1.3 1.4 93 TOWNSEND CREEK 8700 1.7 .4 425* 3.4 1.0 340 ----- ----- Basin wide percent of average 169* 211 BIGHORN BASIN BALD MTN. 9375 2.0 1.6 125* 2.2 1.3 169 BEAR TRAP MEADOW 7900 .6 .3 200* 1.7 .9 189 BLACKWATER 9780 1.6 1.5 107* 1.9 1.3 146 BONE SPRINGS DIV 9350 1.3 1.9 68 1.9 1.2 158 EVENING STAR 9200 .2 2.1 10* .7 1.6 44 GRAVE SPRINGS 8550 .9 -M * 2.2 1.0 220 KIRWIN 9550 1.8 .8 225* 2.1 .9 233 MARQUETTE 8760 2.6 .6 433* 3.3 1.0 330 MIDDLE POWDER 7760 1.6 .7 229* 3.3 1.2 275 OWL CREEK 8975 1.5 .4 375* 1.9 .5 380 POWDER RIVER PASS 9480 .3 .6 50* 1.5 1.0 150 SHELL CREEK 9580 1.5 1.7 88* 1.3 1.0 130 SYLVAN LAKE 8420 .0 1.3 0* 1.0 1.4 71 SYLVAN ROAD 8120 .0 .8 0* .3 1.2 25 TIMBER CREEK 7950 1.7 .1 1700* 2.6 .7 371 YOUNTS PEAK 8350 .8 1.2 67* .7 1.0 70 ----- ----- Basin wide percent of average 112* 166 SHOSHONE RIVER BLACKWATER 9780 1.6 1.5 107* 1.9 1.3 146 EVENING STAR 9200 .2 2.1 10* .7 1.6 44 KIRWIN 9550 1.8 .8 225* 2.1 .9 233 MARQUETTE 8760 2.6 .6 433* 3.3 1.0 330 SYLVAN LAKE 8420 .0 1.3 0* 1.0 1.4 71 SYLVAN ROAD 8120 .0 .8 0* .3 1.2 25 YOUNTS PEAK 8350 .8 1.2 67* .7 1.0 70 ----- ----- Basin wide percent of average 84* 119 POWDER-TONGUE BEAR TRAP MEADOW 7900 .6 .3 200* 1.7 .9 189 BONE SPRINGS DIV 9350 1.3 1.9 68 1.9 1.2 158 BURGESS JUNCTION 7880 .5 .9 56* 1.9 1.1 173 CLOUD PEAK RESERVOIR 9860 1.0 .7 143* 2.8 1.2 233 DOME LAKE 8880 .8 1.1 73* 2.1 1.3 162 GRAVE SPRINGS 8550 .9 -M * 2.2 1.0 220 HANSEN SAWMILL 8760 .3 .4 75* 1.3 .9 144 MIDDLE POWDER 7760 1.6 .7 229* 3.3 1.2 275 POWDER RIVER PASS 9480 .3 .6 50* 1.5 1.0 150 SUCKER CREEK 8880 1.0 .7 143* 2.1 1.2 175 TIE CREEK 6870 .4 -M * -M 1.0 * ----- ----- Basin wide percent of average 101* 189 BELLE FOURCHE BLIND PARK 6890 .0 .9 0* 4.5 1.0 450 NORTH RAPID CREEK 6130 .0 -M * 5.7 -M * WARREN PEAK 6520 .0 .9 0* 4.5 .8 562 ----- ----- Basin wide percent of average 0* 500 UPPER N. PLATTE RIVER COLUMBINE 9400 .0 .7 0* 2.1 1.4 150 DIVIDE PEAK 8800 -M .9 * -M 1.7 * ELK RIVER 8700 .0 .1 0* 3.7 1.3 285 JOE WRIGHT 10120 .6 1.5 40* 4.0 1.9 211 NORTH FRENCH CREEK 10100 2.4 .9 267* 4.5 1.3 346 OLD BATTLE 10000 1.4 2.1 67* 3.5 1.8 194 SOUTH BRUSH CREEK 8400 1.5 .2 750* -M 1.3 * TOWER 10500 .6 2.8 21* 3.4 2.2 155 WEBBER SPRINGS 9200 .3 .7 43* 2.8 1.6 175 WILLOW CREEK PASS 9540 .0 .4 0* 2.0 1.0 200 ----- ----- Basin wide percent of average 72* 208 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 .9 1.1 82* .0 1.3 0 CASPER MTN. 7900 3.0 .6 500* -M 1.4 * DEADMAN HILL 10220 1.6 .6 267* 3.0 1.3 231 DEER PARK 9700 1.6 -M * 2.6 -M * LAPRELE CREEK 8320 .0 .2 0* 3.5 .8 438 RENO HILL 8400 4.3 .8 538* 6.2 1.4 443 ROACH 9700 .5 .6 83* 2.1 1.5 140 SAND LAKE 10080 4.2 1.3 323* 6.0 1.4 429 SOUTH PASS 9040 1.0 1.5 67* 2.3 1.2 192 WINDY PEAK 7840 .7 .0 * 3.6 .7 514 ----- ----- Basin wide percent of average 231* 278 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .1 0* 2.1 1.0 210 DIVIDE PEAK 8800 -M .9 * -M 1.7 * OLD BATTLE 10000 1.4 2.1 67* 3.5 1.8 194 SANDSTONE RS 8150 .0 .1 0* 3.2 .9 356 WHISKEY PARK 8950 .1 .9 11* 3.6 1.0 360 ----- ----- Basin wide percent of average 47* 264 UPPER GREEN RIVER BIG SANDY OPENING 9100 1.3 .1 1300* 1.8 .9 200 BLIND BULL SUM 8650 .4 .4 100* 1.1 1.1 100 EAST RIM DIVIDE 7930 .2 .1 200* .6 .8 75 ELKHART PARK G.S. 9400 .6 .2 300* 1.4 .9 156 GROS VENTRE SUMMIT 8775 .6 .2 300* 1.5 .9 167 KENDALL R.S. 7740 .2 .0 * .8 .8 100 LOOMIS PARK 8240 .3 .1 300* .9 1.0 90 NEW FORK LAKE 8340 .5 .0 * .4 .8 50 SNIDER BASIN 8250 .0 .0 100* .8 .8 100 SPRING CREEK DIVIDE 9000 .3 .2 150* 1.3 1.2 108 TRIPLE PEAK 8500 .1 .2 50* 1.2 1.5 80 ----- ----- Basin wide percent of average 253* 110 LOWER GREEN RIVER HAMS FORK 7840 .0 .0 100* 1.3 .7 186 HEWINTA 9500 .4 .1 400* 2.2 1.3 169 HICKERSON PARK 9150 1.4 .0 * 2.1 1.2 175 HOLE-IN-ROCK 9150 1.0 .0 * 2.7 1.2 225 INDIAN CREEK 9425 .7 .3 233* 1.2 1.3 92 KELLEY R.S. 8180 .0 .1 0* 1.2 1.0 120 STEEL CREEK PARK 10100 .6 1.0 60* 2.3 1.3 177 ----- ----- Basin wide percent of average 113* 163 UPPER BEAR RIVER BUG LAKE 7950 .6 .7 86* 1.9 1.8 106 HAYDEN FORK 9400 .5 .4 125* 1.6 1.4 114 KELLEY R.S. 8180 .0 .1 0* 1.2 1.0 120 LILY LAKE 9050 1.2 .5 240* 2.7 1.5 180 MONTE CRISTO 8960 -M .8 * 1.9 1.9 100 SALT RIVER SUMMIT 7600 .1 .0 * 1.3 .9 144 TRIAL LAKE 9960 .2 .9 22* 1.3 1.6 81 ----- ----- Basin wide percent of average 96* 118 ----------------------------------------------------------------------------- -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.