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: DECEMBER 26 , 1998 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 5.7 7.1 80 7.6 10.3 74 COTTONWOOD CREEK 7600 5.2 8.0 65 8.5 10.9 78 GRANITE CREEK 6770 3.9 6.5 60 6.0 10.8 56 GRASSY LAKE 7265 10.8 12.9 84 12.9 16.7 77 GROS VENTRE SUMMIT 8775 5.2 6.3 83 5.7 7.4 77 LEWIS LAKE DIVIDE 7860 9.9 12.5 79 12.9 17.0 76 PHILLIPS BENCH 8200 8.2 10.3 80 8.7 13.1 66 SALT RIVER SUMMIT 7600 3.1 4.5 69 5.4 7.8 69 SNAKE RIVER STATION 6920 5.4 6.9 78 8.0 11.7 68 SPRING CREEK DIVIDE 9000 5.8 10.6 55 7.5 12.2 61 THUMB DIVIDE 7980 8.3 6.5 128 8.7 9.6 91 TOGWOTEE PASS 9580 9.3 10.2 91 9.6 12.7 76 TWO OCEAN PLATEAU 9360 12.6 11.8 107 11.6 14.2 82 WILLOW CREEK 8450 7.9 11.6 68 13.7 14.3 96 ----- ----- Basin wide percent of average 81 75 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 8.5 10.7 79 7.8 7.8 100 BLACK BEAR 7950 16.4 14.2 115 16.3 15.8 103 CANYON 7940 5.8 4.8 121 6.9 6.4 108 FISHER CREEK 9100 14.4 14.3 101 13.3 14.7 90 MADISON PLATEAU 7750 -M 9.2 * 11.5 10.8 106 NORTHEAST ENTRANCE 7350 3.3 3.6 92 5.0 5.4 93 PARKER PEAK 9400 8.7 10.0 87 -M 7.1 * SYLVAN LAKE 8420 10.2 10.1 101 12.4 9.2 135 THUMB DIVIDE 7980 8.3 6.5 128 8.7 9.6 91 TWO OCEAN PLATEAU 9360 12.6 11.8 107 11.6 14.2 82 WHISKEY CREEK 6800 7.1 6.4 111 9.4 8.9 106 WHITE MILL 8700 8.7 10.4 84 8.6 11.8 73 WOLVERINE 7650 5.9 4.7 126 5.3 6.0 88 ----- ----- Basin wide percent of average 102 97 WIND RIVER BURROUGHS CREEK 8750 4.7 6.5 72 5.4 7.5 72 COLD SPRINGS 9630 4.3 4.1 105 6.0 5.2 115 DEER PARK 9700 4.7 -M * 7.1 -M * HOBBS PARK 10100 7.5 7.2 104 7.9 6.4 123 LITTLE WARM 9620 5.0 4.8 104 5.9 6.2 95 SOUTH PASS 9040 4.7 7.8 60 6.6 7.5 88 ST. LAWRENCE ALT 8620 3.6 3.1 116 6.4 4.8 133 TOGWOTEE PASS 9580 9.3 10.2 91 9.6 12.7 76 TOWNSEND CREEK 8700 4.0 4.2 95 6.9 5.4 128 ----- ----- Basin wide percent of average 90 98 BIGHORN BASIN BALD MTN. 9375 6.0 9.4 64 6.1 8.0 76 BEAR TRAP MEADOW 7900 2.8 3.4 82 6.1 4.1 149 BLACKWATER 9780 12.2 9.1 134 11.0 8.2 134 BONE SPRINGS DIV 9350 5.1 7.3 70 5.6 6.4 88 EVENING STAR 9200 12.0 12.2 98 12.6 10.0 126 GRAVE SPRINGS 8550 2.4 4.2 57 5.7 4.8 119 KIRWIN 9550 4.9 4.9 100 5.7 4.9 116 MARQUETTE 8760 4.9 3.6 136 6.0 4.5 133 MIDDLE POWDER 7760 3.1 5.3 58 9.7 5.6 173 OWL CREEK 8975 3.2 1.7 188 4.3 2.6 165 POWDER RIVER PASS 9480 3.4 4.8 71 5.5 5.3 104 SHELL CREEK 9580 5.6 7.0 80 5.2 6.0 87 SYLVAN LAKE 8420 10.2 10.1 101 12.4 9.2 135 SYLVAN ROAD 8120 6.1 5.4 113 7.9 7.5 105 TIMBER CREEK 7950 3.2 2.2 145 5.3 3.1 171 YOUNTS PEAK 8350 6.9 8.3 83 6.0 7.4 81 ----- ----- Basin wide percent of average 93 118 SHOSHONE RIVER BLACKWATER 9780 12.2 9.1 134 11.0 8.2 134 EVENING STAR 9200 12.0 12.2 98 12.6 10.0 126 KIRWIN 9550 4.9 4.9 100 5.7 4.9 116 MARQUETTE 8760 4.9 3.6 136 6.0 4.5 133 SYLVAN LAKE 8420 10.2 10.1 101 12.4 9.2 135 SYLVAN ROAD 8120 6.1 5.4 113 7.9 7.5 105 YOUNTS PEAK 8350 6.9 8.3 83 6.0 7.4 81 ----- ----- Basin wide percent of average 107 119 POWDER-TONGUE BEAR TRAP MEADOW 7900 2.8 3.4 82 6.1 4.1 149 BIG GOOSE 7990 2.6 -M * 6.1 -M * BONE SPRINGS DIV 9350 5.1 7.3 70 5.6 6.4 88 BURGESS JUNCTION 7880 2.8 5.1 55 5.0 5.3 94 CLOUD PEAK RESERVOIR 9860 5.3 5.2 102 6.5 5.8 112 DOME LAKE 8880 2.8 5.9 47 4.5 6.5 69 GRAVE SPRINGS 8550 2.4 4.2 57 5.7 4.8 119 HANSEN SAWMILL 8760 2.6 3.1 84 4.6 3.7 124 MIDDLE POWDER 7760 3.1 5.3 58 9.7 5.6 173 POWDER RIVER PASS 9480 3.4 4.8 71 5.5 5.3 104 SUCKER CREEK 8880 3.8 4.7 81 6.4 6.1 105 TIE CREEK 6870 .8 -M * -M 5.1 * ----- ----- Basin wide percent of average 70 111 BELLE FOURCHE BLIND PARK 6890 1.5 4.9 31 8.3 4.5 184 NORTH RAPID CREEK 6130 1.5 -M * 8.4 -M * WARREN PEAK 6520 1.8 4.9 37 7.9 3.7 214 ----- ----- Basin wide percent of average 34 198 UPPER N. PLATTE RIVER COLUMBINE 9400 4.3 8.8 49 7.4 9.9 75 DIVIDE PEAK 8800 6.9 8.8 78 13.0 10.9 119 ELK RIVER 8700 3.4 7.3 47 9.3 8.1 115 JOE WRIGHT 10120 7.7 9.7 79 10.7 10.9 98 NORTH FRENCH CREEK 10100 10.3 10.6 97 13.0 10.0 130 OLD BATTLE 10000 9.8 13.7 72 14.2 13.2 108 SOUTH BRUSH CREEK 8400 3.5 4.4 80 10.6 9.0 118 TOWER 10500 12.4 20.3 61 14.2 15.4 92 WEBBER SPRINGS 9200 6.1 11.2 54 10.5 12.3 85 WILLOW CREEK PASS 9540 5.1 5.2 98 6.0 5.7 105 ----- ----- Basin wide percent of average 70 103 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 5.6 11.2 50 8.2 8.0 102 CASPER MTN. 7900 3.3 7.1 46 9.3 6.7 139 DEADMAN HILL 10220 8.0 7.3 110 8.0 7.0 114 DEER PARK 9700 4.7 -M * 7.1 -M * LAPRELE CREEK 8320 .9 4.3 21 7.3 4.8 152 RENO HILL 8400 4.7 5.8 81 9.7 9.1 107 ROACH 9700 5.4 7.1 76 8.3 9.4 88 SAND LAKE 10080 11.5 14.0 82 13.1 8.7 151 SOUTH PASS 9040 4.7 7.8 60 6.6 7.5 88 WINDY PEAK 7840 1.6 3.1 52 7.8 3.8 205 ----- ----- Basin wide percent of average 68 120 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 2.6 4.5 58 8.6 6.9 125 DIVIDE PEAK 8800 6.9 8.8 78 13.0 10.9 119 OLD BATTLE 10000 9.8 13.7 72 14.2 13.2 108 SANDSTONE RS 8150 -M 5.6 * -M 8.3 * WHISKEY PARK 8950 6.4 11.7 55 11.6 10.7 108 ----- ----- Basin wide percent of average 66 114 UPPER GREEN RIVER BIG SANDY OPENING 9100 5.0 5.4 93 4.6 7.5 61 BLIND BULL SUM 8650 7.3 11.7 62 7.4 10.0 74 EAST RIM DIVIDE 7930 3.3 5.1 65 4.1 7.0 59 ELKHART PARK G.S. 9400 3.9 5.3 74 4.7 7.4 64 GROS VENTRE SUMMIT 8775 5.2 6.3 83 5.7 7.4 77 KENDALL R.S. 7740 4.0 5.3 75 4.3 7.2 60 LOOMIS PARK 8240 4.1 6.3 65 5.4 8.7 62 NEW FORK LAKE 8340 3.5 4.1 85 3.7 6.7 55 SNIDER BASIN 8250 2.8 5.4 52 4.1 7.0 59 SPRING CREEK DIVIDE 9000 5.8 10.6 55 7.5 12.2 61 TRIPLE PEAK 8500 6.5 9.9 66 8.2 14.3 57 ----- ----- Basin wide percent of average 68 63 LOWER GREEN RIVER HAMS FORK 7840 2.0 3.8 53 3.6 6.2 58 HEWINTA 9500 2.6 3.6 72 5.3 6.0 88 HICKERSON PARK 9150 2.2 2.4 92 5.0 4.6 109 HOLE-IN-ROCK 9150 3.0 2.2 136 5.6 4.6 122 INDIAN CREEK 9425 6.2 10.6 58 6.5 11.6 56 KELLEY R.S. 8180 3.5 6.1 57 5.4 8.6 63 STEEL CREEK PARK 10100 4.2 6.7 63 6.8 6.4 106 ----- ----- Basin wide percent of average 67 80 UPPER BEAR RIVER BUG LAKE 7950 3.7 8.1 46 5.4 8.9 61 HAYDEN FORK 9400 3.7 6.2 60 7.6 8.2 93 KELLEY R.S. 8180 3.5 6.1 57 5.4 8.6 63 LILY LAKE 9050 4.0 5.6 71 7.1 6.8 104 MONTE CRISTO 8960 5.3 10.2 52 8.7 11.4 76 SALT RIVER SUMMIT 7600 3.1 4.5 69 5.4 7.8 69 TRIAL LAKE 9960 3.9 9.8 40 5.5 10.3 53 ----- ----- Basin wide percent of average 54 73 ----------------------------------------------------------------------------- -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.