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 12 , 1998 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 4.8 5.3 91 6.9 8.2 84 COTTONWOOD CREEK 7600 4.1 5.9 69 7.5 8.7 86 GRANITE CREEK 6770 3.2 4.9 65 5.2 8.6 60 GRASSY LAKE 7265 9.3 9.5 98 11.3 13.2 86 GROS VENTRE SUMMIT 8775 4.6 4.9 94 5.4 5.9 92 LEWIS LAKE DIVIDE 7860 9.3 9.3 100 11.8 13.4 88 PHILLIPS BENCH 8200 6.9 7.6 91 7.7 10.4 74 SALT RIVER SUMMIT 7600 2.1 3.1 68 4.7 6.2 76 SNAKE RIVER STATION 6920 4.7 5.2 90 7.1 9.3 76 SPRING CREEK DIVIDE 9000 5.6 8.2 68 6.8 9.6 71 THUMB DIVIDE 7980 7.7 4.9 157 8.2 7.6 108 TOGWOTEE PASS 9580 8.0 8.0 100 8.5 10.0 85 TWO OCEAN PLATEAU 9360 11.7 9.7 121 10.8 11.2 96 WILLOW CREEK 8450 6.6 8.8 75 12.1 11.3 107 ----- ----- Basin wide percent of average 93 85 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 7.5 8.6 87 6.9 6.3 110 BLACK BEAR 7950 15.0 11.0 136 14.9 12.5 119 CANYON 7940 4.9 3.7 132 5.8 5.2 112 FISHER CREEK 9100 12.9 11.2 115 11.9 11.6 103 MADISON PLATEAU 7750 -M 7.1 * 11.3 8.6 131 NORTHEAST ENTRANCE 7350 2.7 2.7 100 4.4 4.4 100 PARKER PEAK 9400 7.2 8.6 84 -M 5.9 * SYLVAN LAKE 8420 9.0 8.4 107 11.1 7.7 144 THUMB DIVIDE 7980 7.7 4.9 157 8.2 7.6 108 TWO OCEAN PLATEAU 9360 11.7 9.7 121 10.8 11.2 96 WHISKEY CREEK 6800 6.9 4.9 141 8.8 7.1 124 WHITE MILL 8700 7.7 8.0 96 7.7 9.4 82 WOLVERINE 7650 3.9 3.4 115 4.6 4.9 94 ----- ----- Basin wide percent of average 114 110 WIND RIVER BURROUGHS CREEK 8750 3.9 5.0 78 4.5 6.2 73 COLD SPRINGS 9630 4.1 3.4 121 5.7 4.5 127 DEER PARK 9700 4.9 -M * 7.1 -M * HOBBS PARK 10100 7.1 6.0 118 7.5 5.3 142 LITTLE WARM 9620 4.4 4.0 110 5.5 5.2 106 SOUTH PASS 9040 4.6 6.5 71 6.5 6.3 103 ST. LAWRENCE ALT 8620 3.4 2.5 136 6.0 4.2 143 TOGWOTEE PASS 9580 8.0 8.0 100 8.5 10.0 85 TOWNSEND CREEK 8700 3.8 3.4 112 6.6 4.6 143 ----- ----- Basin wide percent of average 101 110 BIGHORN BASIN BALD MTN. 9375 5.5 7.6 72 5.6 6.4 88 BEAR TRAP MEADOW 7900 2.3 2.6 88 5.6 3.5 160 BLACKWATER 9780 11.2 7.3 153 10.1 6.7 151 BONE SPRINGS DIV 9350 4.2 6.1 69 4.8 5.3 91 EVENING STAR 9200 10.3 10.3 100 10.7 8.2 130 GRAVE SPRINGS 8550 2.4 3.5 69 5.6 4.1 137 KIRWIN 9550 4.7 4.1 115 5.4 4.2 129 MARQUETTE 8760 4.8 3.0 160 5.7 3.9 146 MIDDLE POWDER 7760 2.3 4.5 51 8.5 4.8 177 OWL CREEK 8975 2.8 1.3 215 3.8 2.3 165 POWDER RIVER PASS 9480 2.5 4.0 62 4.5 4.4 102 SHELL CREEK 9580 4.8 5.8 83 4.5 4.9 92 SYLVAN LAKE 8420 9.0 8.4 107 11.1 7.7 144 SYLVAN ROAD 8120 5.1 4.4 116 6.6 6.2 106 TIMBER CREEK 7950 2.8 1.7 165 4.4 2.8 157 YOUNTS PEAK 8350 5.9 6.7 88 5.5 6.1 90 ----- ----- Basin wide percent of average 99 126 SHOSHONE RIVER BLACKWATER 9780 11.2 7.3 153 10.1 6.7 151 EVENING STAR 9200 10.3 10.3 100 10.7 8.2 130 KIRWIN 9550 4.7 4.1 115 5.4 4.2 129 MARQUETTE 8760 4.8 3.0 160 5.7 3.9 146 SYLVAN LAKE 8420 9.0 8.4 107 11.1 7.7 144 SYLVAN ROAD 8120 5.1 4.4 116 6.6 6.2 106 YOUNTS PEAK 8350 5.9 6.7 88 5.5 6.1 90 ----- ----- Basin wide percent of average 115 128 POWDER-TONGUE BEAR TRAP MEADOW 7900 2.3 2.6 88 5.6 3.5 160 BIG GOOSE 7990 2.1 -M * 5.2 -M * BONE SPRINGS DIV 9350 4.2 6.1 69 4.8 5.3 91 BURGESS JUNCTION 7880 2.2 4.3 51 4.6 4.4 105 CLOUD PEAK RESERVOIR 9860 4.2 4.3 98 5.6 4.9 114 DOME LAKE 8880 2.6 4.9 53 4.2 5.5 76 GRAVE SPRINGS 8550 2.4 3.5 69 5.6 4.1 137 HANSEN SAWMILL 8760 2.1 2.6 81 3.7 3.3 112 MIDDLE POWDER 7760 2.3 4.5 51 8.5 4.8 177 POWDER RIVER PASS 9480 2.5 4.0 62 4.5 4.4 102 SUCKER CREEK 8880 3.6 3.7 97 5.4 5.0 108 TIE CREEK 6870 .7 -M * 3.7 4.2 88 ----- ----- Basin wide percent of average 70 114 BELLE FOURCHE BLIND PARK 6890 1.2 4.1 29 7.6 3.8 200 NORTH RAPID CREEK 6130 1.3 -M * 8.0 -M * WARREN PEAK 6520 1.6 4.1 39 7.6 3.1 245 ----- ----- Basin wide percent of average 34 220 UPPER N. PLATTE RIVER COLUMBINE 9400 3.3 6.7 49 6.2 7.8 79 DIVIDE PEAK 8800 5.5 7.2 76 11.6 8.5 136 ELK RIVER 8700 1.8 5.3 34 8.2 6.4 128 JOE WRIGHT 10120 6.4 8.1 79 9.5 9.1 104 NORTH FRENCH CREEK 10100 8.8 8.5 104 11.5 7.8 147 OLD BATTLE 10000 8.5 11.2 76 12.5 10.7 117 SOUTH BRUSH CREEK 8400 3.0 3.4 88 9.5 6.9 138 TOWER 10500 11.8 16.8 70 12.6 12.3 102 WEBBER SPRINGS 9200 4.8 9.0 53 9.2 10.2 90 WILLOW CREEK PASS 9540 3.9 4.2 93 5.0 4.7 106 ----- ----- Basin wide percent of average 72 114 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 4.6 9.0 51 6.8 6.5 105 CASPER MTN. 7900 2.9 6.0 48 8.9 5.9 151 DEADMAN HILL 10220 5.8 5.8 100 6.7 5.9 114 DEER PARK 9700 4.9 -M * 7.1 -M * LAPRELE CREEK 8320 .5 3.5 14 6.6 3.9 169 RENO HILL 8400 4.5 4.8 94 9.0 7.7 117 ROACH 9700 3.7 5.8 64 6.8 7.6 89 SAND LAKE 10080 10.1 11.3 89 11.7 7.2 162 SOUTH PASS 9040 4.6 6.5 71 6.5 6.3 103 WINDY PEAK 7840 .8 2.6 31 6.8 3.2 212 ----- ----- Basin wide percent of average 68 129 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M 3.4 * 7.5 5.6 134 DIVIDE PEAK 8800 5.5 7.2 76 11.6 8.5 136 OLD BATTLE 10000 8.5 11.2 76 12.5 10.7 117 SANDSTONE RS 8150 2.2 4.3 51 8.3 6.5 128 WHISKEY PARK 8950 4.8 9.2 52 10.1 8.2 123 ----- ----- Basin wide percent of average 66 127 UPPER GREEN RIVER BIG SANDY OPENING 9100 4.3 4.1 105 4.2 5.9 71 BLIND BULL SUM 8650 6.2 9.5 65 6.7 7.9 85 EAST RIM DIVIDE 7930 2.5 3.5 71 3.5 5.5 64 ELKHART PARK G.S. 9400 3.4 4.1 83 4.3 5.9 73 GROS VENTRE SUMMIT 8775 4.6 4.9 94 5.4 5.9 92 KENDALL R.S. 7740 3.0 3.8 79 3.7 5.7 65 LOOMIS PARK 8240 3.2 4.7 68 4.6 6.9 67 NEW FORK LAKE 8340 2.5 3.0 83 3.1 5.3 58 SNIDER BASIN 8250 2.2 4.0 55 3.5 5.5 64 SPRING CREEK DIVIDE 9000 5.6 8.2 68 6.8 9.6 71 TRIPLE PEAK 8500 5.3 7.4 72 7.1 11.3 63 ----- ----- Basin wide percent of average 75 70 LOWER GREEN RIVER HAMS FORK 7840 1.4 2.7 52 3.1 4.9 63 HEWINTA 9500 2.1 2.9 72 4.9 5.1 96 HICKERSON PARK 9150 2.0 2.0 100 4.8 4.0 120 HOLE-IN-ROCK 9150 2.0 1.8 111 5.2 4.0 130 INDIAN CREEK 9425 5.6 8.1 69 5.8 9.2 63 KELLEY R.S. 8180 2.7 4.6 59 4.4 6.9 64 STEEL CREEK PARK 10100 3.3 5.7 58 6.2 5.4 115 ----- ----- Basin wide percent of average 69 87 UPPER BEAR RIVER BUG LAKE 7950 3.1 6.5 48 5.0 7.6 66 HAYDEN FORK 9400 3.4 4.8 71 6.8 6.7 101 KELLEY R.S. 8180 2.7 4.6 59 4.4 6.9 64 LILY LAKE 9050 3.5 4.4 80 6.8 5.8 117 MONTE CRISTO 8960 5.5 8.2 67 8.4 9.5 88 SALT RIVER SUMMIT 7600 2.1 3.1 68 4.7 6.2 76 TRIAL LAKE 9960 4.0 7.6 53 5.7 8.5 67 ----- ----- Basin wide percent of average 62 82 ----------------------------------------------------------------------------- -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.