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: DECEMBER 13 , 1998 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 4.9 5.4 91 7.0 8.3 84 COTTONWOOD CREEK 7600 4.1 6.1 67 7.5 8.8 85 GRANITE CREEK 6770 3.3 5.0 66 5.2 8.7 60 GRASSY LAKE 7265 9.2 9.7 95 11.4 13.5 84 GROS VENTRE SUMMIT 8775 4.7 5.0 94 5.4 6.0 90 LEWIS LAKE DIVIDE 7860 9.3 9.5 98 11.9 13.7 87 PHILLIPS BENCH 8200 7.0 7.8 90 7.8 10.6 74 SALT RIVER SUMMIT 7600 2.1 3.2 66 4.7 6.3 75 SNAKE RIVER STATION 6920 4.7 5.3 89 7.1 9.4 76 SPRING CREEK DIVIDE 9000 5.6 8.4 67 6.8 9.7 70 THUMB DIVIDE 7980 7.7 5.1 151 8.3 7.7 108 TOGWOTEE PASS 9580 8.0 8.2 98 8.5 10.2 83 TWO OCEAN PLATEAU 9360 11.8 9.9 119 10.9 11.5 95 WILLOW CREEK 8450 6.7 9.0 74 12.1 11.6 104 ----- ----- Basin wide percent of average 91 84 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 -M 8.8 * -M 6.4 * BLACK BEAR 7950 15.0 11.2 134 15.0 12.7 118 CANYON 7940 5.0 3.8 132 5.9 5.3 111 FISHER CREEK 9100 12.9 11.5 112 12.0 11.8 102 MADISON PLATEAU 7750 -M 7.3 * 11.3 8.8 128 NORTHEAST ENTRANCE 7350 2.6 2.8 93 4.5 4.5 100 PARKER PEAK 9400 7.3 8.7 84 -M 6.0 * SYLVAN LAKE 8420 9.0 8.5 106 11.2 7.8 144 THUMB DIVIDE 7980 7.7 5.1 151 8.3 7.7 108 TWO OCEAN PLATEAU 9360 11.8 9.9 119 10.9 11.5 95 WHISKEY CREEK 6800 6.8 5.0 136 8.9 7.2 124 WHITE MILL 8700 7.7 8.2 94 7.7 9.6 80 WOLVERINE 7650 3.9 3.5 111 4.5 5.0 90 ----- ----- Basin wide percent of average 115 109 WIND RIVER BURROUGHS CREEK 8750 3.9 5.2 75 4.5 6.3 71 COLD SPRINGS 9630 4.1 3.5 117 5.6 4.6 122 DEER PARK 9700 4.9 -M * 7.1 -M * HOBBS PARK 10100 7.1 6.1 116 7.4 5.4 137 LITTLE WARM 9620 4.4 4.1 107 5.5 5.3 104 SOUTH PASS 9040 4.6 6.6 70 6.5 6.3 103 ST. LAWRENCE ALT 8620 3.4 2.5 136 6.0 4.3 140 TOGWOTEE PASS 9580 8.0 8.2 98 8.5 10.2 83 TOWNSEND CREEK 8700 3.7 3.5 106 6.5 4.6 141 ----- ----- Basin wide percent of average 99 107 BIGHORN BASIN BALD MTN. 9375 5.5 7.7 71 5.7 6.5 88 BEAR TRAP MEADOW 7900 2.3 2.7 85 5.6 3.6 156 BLACKWATER 9780 11.3 7.4 153 10.2 6.8 150 BONE SPRINGS DIV 9350 4.3 6.2 69 4.9 5.4 91 EVENING STAR 9200 10.3 10.5 98 10.8 8.3 130 GRAVE SPRINGS 8550 2.4 3.6 67 5.6 4.2 133 KIRWIN 9550 4.7 4.2 112 5.3 4.3 123 MARQUETTE 8760 4.8 3.1 155 5.8 4.0 145 MIDDLE POWDER 7760 2.3 4.5 51 8.4 4.8 175 OWL CREEK 8975 2.9 1.4 207 3.8 2.3 165 POWDER RIVER PASS 9480 2.5 4.1 61 4.5 4.5 100 SHELL CREEK 9580 4.9 5.9 83 4.5 5.0 90 SYLVAN LAKE 8420 9.0 8.5 106 11.2 7.8 144 SYLVAN ROAD 8120 5.2 4.4 118 6.6 6.3 105 TIMBER CREEK 7950 2.8 1.7 165 4.4 2.8 157 YOUNTS PEAK 8350 5.9 6.9 86 5.5 6.2 89 ----- ----- Basin wide percent of average 98 124 SHOSHONE RIVER BLACKWATER 9780 11.3 7.4 153 10.2 6.8 150 EVENING STAR 9200 10.3 10.5 98 10.8 8.3 130 KIRWIN 9550 4.7 4.2 112 5.3 4.3 123 MARQUETTE 8760 4.8 3.1 155 5.8 4.0 145 SYLVAN LAKE 8420 9.0 8.5 106 11.2 7.8 144 SYLVAN ROAD 8120 5.2 4.4 118 6.6 6.3 105 YOUNTS PEAK 8350 5.9 6.9 86 5.5 6.2 89 ----- ----- Basin wide percent of average 114 127 POWDER-TONGUE BEAR TRAP MEADOW 7900 2.3 2.7 85 5.6 3.6 156 BIG GOOSE 7990 -M -M * -M -M * BONE SPRINGS DIV 9350 4.3 6.2 69 4.9 5.4 91 BURGESS JUNCTION 7880 2.3 4.4 52 4.6 4.5 102 CLOUD PEAK RESERVOIR 9860 4.3 4.3 100 5.8 5.0 116 DOME LAKE 8880 -M 4.9 * -M 5.6 * GRAVE SPRINGS 8550 2.4 3.6 67 5.6 4.2 133 HANSEN SAWMILL 8760 2.1 2.6 81 3.7 3.3 112 MIDDLE POWDER 7760 2.3 4.5 51 8.4 4.8 175 POWDER RIVER PASS 9480 2.5 4.1 61 4.5 4.5 100 SUCKER CREEK 8880 3.6 3.8 95 5.5 5.1 108 TIE CREEK 6870 .7 -M * 3.7 4.3 86 ----- ----- Basin wide percent of average 72 117 BELLE FOURCHE BLIND PARK 6890 1.2 4.2 29 7.6 3.8 200 NORTH RAPID CREEK 6130 1.3 -M * 8.1 -M * WARREN PEAK 6520 1.6 4.2 38 7.6 3.2 238 ----- ----- Basin wide percent of average 33 217 UPPER N. PLATTE RIVER COLUMBINE 9400 3.3 6.8 49 6.2 8.0 78 DIVIDE PEAK 8800 5.5 7.3 75 11.7 8.7 134 ELK RIVER 8700 2.0 5.5 36 8.2 6.5 126 JOE WRIGHT 10120 6.4 8.2 78 9.5 9.3 102 NORTH FRENCH CREEK 10100 8.8 8.7 101 11.5 8.0 144 OLD BATTLE 10000 8.5 11.4 75 12.5 10.9 115 SOUTH BRUSH CREEK 8400 2.9 3.4 85 9.5 7.0 136 TOWER 10500 11.6 17.0 68 12.5 12.5 100 WEBBER SPRINGS 9200 4.8 9.1 53 9.2 10.3 89 WILLOW CREEK PASS 9540 4.0 4.2 95 5.0 4.8 104 ----- ----- Basin wide percent of average 71 111 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 4.5 9.2 49 6.8 6.6 103 CASPER MTN. 7900 3.0 6.1 49 8.9 5.9 151 DEADMAN HILL 10220 5.7 6.0 95 6.7 6.0 112 DEER PARK 9700 4.9 -M * 7.1 -M * LAPRELE CREEK 8320 .5 3.6 14 6.6 4.0 165 RENO HILL 8400 4.6 4.8 96 9.1 7.8 117 ROACH 9700 3.6 5.9 61 6.8 7.7 88 SAND LAKE 10080 9.9 11.5 86 11.7 7.3 160 SOUTH PASS 9040 4.6 6.6 70 6.5 6.3 103 WINDY PEAK 7840 .9 2.6 35 6.9 3.2 216 ----- ----- Basin wide percent of average 66 128 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M 3.5 * 7.5 5.7 132 DIVIDE PEAK 8800 5.5 7.3 75 11.7 8.7 134 OLD BATTLE 10000 8.5 11.4 75 12.5 10.9 115 SANDSTONE RS 8150 2.2 4.4 50 8.3 6.7 124 WHISKEY PARK 8950 5.0 9.4 53 10.2 8.4 121 ----- ----- Basin wide percent of average 65 124 UPPER GREEN RIVER BIG SANDY OPENING 9100 4.3 4.2 102 4.2 6.1 69 BLIND BULL SUM 8650 6.2 9.7 64 6.7 8.1 83 EAST RIM DIVIDE 7930 2.5 3.7 68 3.5 5.6 63 ELKHART PARK G.S. 9400 3.4 4.2 81 4.3 6.0 72 GROS VENTRE SUMMIT 8775 4.7 5.0 94 5.4 6.0 90 KENDALL R.S. 7740 3.0 3.9 77 3.7 5.8 64 LOOMIS PARK 8240 3.2 4.8 67 4.6 7.0 66 NEW FORK LAKE 8340 2.4 3.1 77 3.1 5.4 57 SNIDER BASIN 8250 2.3 4.1 56 3.5 5.6 63 SPRING CREEK DIVIDE 9000 5.6 8.4 67 6.8 9.7 70 TRIPLE PEAK 8500 5.3 7.6 70 7.1 11.6 61 ----- ----- Basin wide percent of average 73 69 LOWER GREEN RIVER HAMS FORK 7840 1.4 2.8 50 3.1 5.0 62 HEWINTA 9500 2.1 2.9 72 5.0 5.2 96 HICKERSON PARK 9150 2.0 2.0 100 4.7 4.1 115 HOLE-IN-ROCK 9150 2.0 1.8 111 5.2 4.1 127 INDIAN CREEK 9425 5.6 8.3 67 5.9 9.4 63 KELLEY R.S. 8180 2.7 4.8 56 4.4 7.0 63 STEEL CREEK PARK 10100 3.3 5.8 57 6.2 5.5 113 ----- ----- Basin wide percent of average 67 86 UPPER BEAR RIVER BUG LAKE 7950 3.0 6.6 45 5.0 7.7 65 HAYDEN FORK 9400 3.4 4.9 69 6.6 6.8 97 KELLEY R.S. 8180 2.7 4.8 56 4.4 7.0 63 LILY LAKE 9050 3.6 4.5 80 6.8 5.9 115 MONTE CRISTO 8960 5.4 8.4 64 8.4 9.6 88 SALT RIVER SUMMIT 7600 2.1 3.2 66 4.7 6.3 75 TRIAL LAKE 9960 4.0 7.7 52 5.6 8.7 64 ----- ----- Basin wide percent of average 60 80 ----------------------------------------------------------------------------- -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.