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 FRIDAY: DECEMBER 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 5.0 6.1 82 7.0 9.1 77 COTTONWOOD CREEK 7600 4.2 6.8 62 7.5 9.6 78 GRANITE CREEK 6770 3.4 5.6 61 5.3 9.5 56 GRASSY LAKE 7265 9.3 10.9 85 11.4 14.7 78 GROS VENTRE SUMMIT 8775 4.8 5.5 87 5.4 6.5 83 LEWIS LAKE DIVIDE 7860 9.2 10.7 86 11.9 14.9 80 PHILLIPS BENCH 8200 7.0 8.8 80 7.8 11.5 68 SALT RIVER SUMMIT 7600 2.2 3.7 59 4.8 6.9 70 SNAKE RIVER STATION 6920 4.9 6.0 82 7.1 10.3 69 SPRING CREEK DIVIDE 9000 5.6 9.3 60 6.8 10.7 64 THUMB DIVIDE 7980 7.8 5.6 139 8.3 8.5 98 TOGWOTEE PASS 9580 8.1 9.0 90 8.6 11.1 77 TWO OCEAN PLATEAU 9360 11.8 10.6 111 10.9 12.5 87 WILLOW CREEK 8450 6.7 10.1 66 12.1 12.6 96 ----- ----- Basin wide percent of average 83 77 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 7.7 9.5 81 7.1 7.0 101 BLACK BEAR 7950 15.2 12.4 123 15.2 13.9 109 CANYON 7940 5.0 4.2 119 6.0 5.7 105 FISHER CREEK 9100 13.2 12.6 105 12.3 12.9 95 MADISON PLATEAU 7750 -M 8.0 * 10.7 9.5 113 NORTHEAST ENTRANCE 7350 2.6 3.1 84 4.5 4.9 92 PARKER PEAK 9400 7.5 9.3 81 -M 6.4 * SYLVAN LAKE 8420 9.1 9.2 99 11.2 8.3 135 THUMB DIVIDE 7980 7.8 5.6 139 8.3 8.5 98 TWO OCEAN PLATEAU 9360 11.8 10.6 111 10.9 12.5 87 WHISKEY CREEK 6800 6.9 5.5 125 8.9 7.8 114 WHITE MILL 8700 7.9 9.0 88 7.9 10.4 76 WOLVERINE 7650 3.9 4.0 98 4.5 5.4 83 ----- ----- Basin wide percent of average 104 101 WIND RIVER BURROUGHS CREEK 8750 4.0 5.7 70 4.6 6.7 69 COLD SPRINGS 9630 4.2 3.7 114 5.6 4.8 117 DEER PARK 9700 4.9 -M * 7.1 -M * HOBBS PARK 10100 7.2 6.5 111 7.5 5.8 129 LITTLE WARM 9620 4.6 4.4 105 5.4 5.7 95 SOUTH PASS 9040 4.7 7.1 66 6.5 6.8 96 ST. LAWRENCE ALT 8620 3.4 2.7 126 6.0 4.5 133 TOGWOTEE PASS 9580 8.1 9.0 90 8.6 11.1 77 TOWNSEND CREEK 8700 3.8 3.8 100 6.6 4.9 135 ----- ----- Basin wide percent of average 93 101 BIGHORN BASIN BALD MTN. 9375 5.6 8.4 67 5.7 7.1 80 BEAR TRAP MEADOW 7900 2.4 3.0 80 5.5 3.8 145 BLACKWATER 9780 11.4 8.1 141 10.2 7.4 138 BONE SPRINGS DIV 9350 4.5 6.6 68 5.0 5.8 86 EVENING STAR 9200 10.6 11.2 95 11.0 9.0 122 GRAVE SPRINGS 8550 2.4 3.8 63 5.6 4.4 127 KIRWIN 9550 4.8 4.5 107 5.4 4.5 120 MARQUETTE 8760 4.8 3.3 145 5.7 4.2 136 MIDDLE POWDER 7760 2.3 4.9 47 8.5 5.1 167 OWL CREEK 8975 2.9 1.5 193 3.7 2.4 154 POWDER RIVER PASS 9480 2.6 4.4 59 4.6 4.8 96 SHELL CREEK 9580 5.0 6.3 79 4.5 5.4 83 SYLVAN LAKE 8420 9.1 9.2 99 11.2 8.3 135 SYLVAN ROAD 8120 5.2 4.8 108 6.6 6.7 99 TIMBER CREEK 7950 2.9 1.9 153 4.4 2.9 152 YOUNTS PEAK 8350 6.0 7.4 81 5.7 6.6 86 ----- ----- Basin wide percent of average 92 117 SHOSHONE RIVER BLACKWATER 9780 11.4 8.1 141 10.2 7.4 138 EVENING STAR 9200 10.6 11.2 95 11.0 9.0 122 KIRWIN 9550 4.8 4.5 107 5.4 4.5 120 MARQUETTE 8760 4.8 3.3 145 5.7 4.2 136 SYLVAN LAKE 8420 9.1 9.2 99 11.2 8.3 135 SYLVAN ROAD 8120 5.2 4.8 108 6.6 6.7 99 YOUNTS PEAK 8350 6.0 7.4 81 5.7 6.6 86 ----- ----- Basin wide percent of average 107 119 POWDER-TONGUE BEAR TRAP MEADOW 7900 2.4 3.0 80 5.5 3.8 145 BIG GOOSE 7990 2.2 -M * 5.3 -M * BONE SPRINGS DIV 9350 4.5 6.6 68 5.0 5.8 86 BURGESS JUNCTION 7880 2.3 4.7 49 4.6 4.8 96 CLOUD PEAK RESERVOIR 9860 4.6 4.7 98 5.8 5.3 109 DOME LAKE 8880 2.6 5.3 49 4.3 5.9 73 GRAVE SPRINGS 8550 2.4 3.8 63 5.6 4.4 127 HANSEN SAWMILL 8760 2.1 2.8 75 3.7 3.5 106 MIDDLE POWDER 7760 2.3 4.9 47 8.5 5.1 167 POWDER RIVER PASS 9480 2.6 4.4 59 4.6 4.8 96 SUCKER CREEK 8880 3.6 4.1 88 5.4 5.5 98 TIE CREEK 6870 .7 -M * -M 4.6 * ----- ----- Basin wide percent of average 66 108 BELLE FOURCHE BLIND PARK 6890 1.2 4.5 27 7.7 4.1 188 NORTH RAPID CREEK 6130 1.4 -M * 8.2 -M * WARREN PEAK 6520 1.8 4.5 40 7.7 3.4 226 ----- ----- Basin wide percent of average 33 205 UPPER N. PLATTE RIVER COLUMBINE 9400 3.4 7.6 45 6.6 8.7 76 DIVIDE PEAK 8800 5.5 7.9 70 11.8 9.6 123 ELK RIVER 8700 2.4 6.2 39 8.5 7.1 120 JOE WRIGHT 10120 6.7 8.8 76 9.6 9.9 97 NORTH FRENCH CREEK 10100 9.0 9.4 96 11.5 8.7 132 OLD BATTLE 10000 8.6 12.3 70 12.7 11.8 108 SOUTH BRUSH CREEK 8400 3.2 3.8 84 9.6 7.8 123 TOWER 10500 11.0 18.3 60 12.6 13.6 93 WEBBER SPRINGS 9200 4.8 10.0 48 9.3 11.1 84 WILLOW CREEK PASS 9540 4.3 4.6 93 5.6 5.1 110 ----- ----- Basin wide percent of average 66 105 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 4.4 10.0 44 6.8 7.1 96 CASPER MTN. 7900 3.1 6.5 48 9.0 6.2 145 DEADMAN HILL 10220 6.4 6.5 98 6.8 6.4 106 DEER PARK 9700 4.9 -M * 7.1 -M * LAPRELE CREEK 8320 .6 3.9 15 6.7 4.3 156 RENO HILL 8400 4.7 5.2 90 9.2 8.3 111 ROACH 9700 3.7 6.4 58 6.8 8.4 81 SAND LAKE 10080 9.6 12.5 77 11.7 7.9 148 SOUTH PASS 9040 4.7 7.1 66 6.5 6.8 96 WINDY PEAK 7840 1.0 2.8 36 7.0 3.5 200 ----- ----- Basin wide percent of average 63 120 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 1.4 3.9 36 7.5 6.2 121 DIVIDE PEAK 8800 5.5 7.9 70 11.8 9.6 123 OLD BATTLE 10000 8.6 12.3 70 12.7 11.8 108 SANDSTONE RS 8150 2.5 4.9 51 8.3 7.3 114 WHISKEY PARK 8950 5.3 10.3 51 10.4 9.3 112 ----- ----- Basin wide percent of average 59 115 UPPER GREEN RIVER BIG SANDY OPENING 9100 4.7 4.7 100 4.3 6.6 65 BLIND BULL SUM 8650 6.3 10.5 60 6.7 8.8 76 EAST RIM DIVIDE 7930 2.7 4.4 61 3.5 6.2 56 ELKHART PARK G.S. 9400 3.5 4.6 76 4.3 6.5 66 GROS VENTRE SUMMIT 8775 4.8 5.5 87 5.4 6.5 83 KENDALL R.S. 7740 3.1 4.4 70 3.8 6.3 60 LOOMIS PARK 8240 3.3 5.4 61 4.7 7.7 61 NEW FORK LAKE 8340 2.6 3.5 74 3.3 5.9 56 SNIDER BASIN 8250 2.4 4.6 52 3.6 6.2 58 SPRING CREEK DIVIDE 9000 5.6 9.3 60 6.8 10.7 64 TRIPLE PEAK 8500 5.4 8.5 64 7.2 12.6 57 ----- ----- Basin wide percent of average 68 64 LOWER GREEN RIVER HAMS FORK 7840 1.5 3.2 47 3.1 5.4 57 HEWINTA 9500 2.4 3.2 75 4.9 5.5 89 HICKERSON PARK 9150 2.0 2.2 91 4.8 4.3 112 HOLE-IN-ROCK 9150 2.1 2.0 105 5.2 4.3 121 INDIAN CREEK 9425 5.7 9.2 62 5.9 10.2 58 KELLEY R.S. 8180 2.8 5.3 53 4.6 7.6 61 STEEL CREEK PARK 10100 3.6 6.1 59 6.3 5.8 109 ----- ----- Basin wide percent of average 64 81 UPPER BEAR RIVER BUG LAKE 7950 2.9 7.2 40 5.1 8.1 63 HAYDEN FORK 9400 3.4 5.4 63 6.3 7.3 86 KELLEY R.S. 8180 2.8 5.3 53 4.6 7.6 61 LILY LAKE 9050 3.7 4.9 76 6.8 6.2 110 MONTE CRISTO 8960 5.5 9.2 60 8.4 10.3 82 SALT RIVER SUMMIT 7600 2.2 3.7 59 4.8 6.9 70 TRIAL LAKE 9960 4.0 8.5 47 5.5 9.3 59 ----- ----- Basin wide percent of average 55 75 ----------------------------------------------------------------------------- -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.