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: APRIL 24 , 1998 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 13.7 13.0 105 22.6 24.6 92 COTTONWOOD CREEK 7600 19.9 21.4 93 25.4 27.6 92 GRANITE CREEK 6770 15.0 15.0 100 22.1 26.1 85 GRASSY LAKE 7265 31.9 35.6 90 37.7 41.0 92 GROS VENTRE SUMMIT 8775 12.1 14.8 82 14.6 17.7 82 LEWIS LAKE DIVIDE 7860 32.7 35.5 92 34.9 41.7 84 PHILLIPS BENCH 8200 27.2 30.1 90 27.8 32.9 84 SALT RIVER SUMMIT 7600 14.5 12.1 120 19.9 18.8 106 SNAKE RIVER STATION 6920 16.2 17.4 93 24.5 28.8 85 SPRING CREEK DIVIDE 9000 25.2 29.5 85 23.9 30.2 79 THUMB DIVIDE 7980 17.3 16.1 107 19.9 23.1 86 TOGWOTEE PASS 9580 24.8 27.7 90 26.4 31.2 85 TWO OCEAN PLATEAU 9360 30.4 27.2 112 30.0 33.9 88 WILLOW CREEK 8450 26.6 31.8 84 34.5 35.4 97 ----- ----- Basin wide percent of average 94 88 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 20.6 25.8 80 18.3 20.5 89 BLACK BEAR 7950 40.3 40.0 101 39.5 45.3 87 CANYON 7940 13.5 12.0 112 16.4 15.9 103 FISHER CREEK 9100 28.9 38.4 75 30.6 41.0 75 MADISON PLATEAU 7750 22.2 24.6 90 25.5 29.2 87 NORTHEAST ENTRANCE 7350 4.2 7.3 58 12.7 13.4 95 PARKER PEAK 9400 20.0 23.5 85 17.8 17.6 101 SYLVAN LAKE 8420 18.7 23.8 79 22.4 21.6 104 THUMB DIVIDE 7980 17.3 16.1 107 19.9 23.1 86 TWO OCEAN PLATEAU 9360 30.4 27.2 112 30.0 33.9 88 WHISKEY CREEK 6800 16.1 16.5 98 21.2 24.3 87 WHITE MILL 8700 23.8 26.1 91 23.0 31.7 73 WOLVERINE 7650 6.9 9.7 71 10.8 14.6 74 ----- ----- Basin wide percent of average 90 87 WIND RIVER BURROUGHS CREEK 8750 16.7 14.0 119 19.2 18.8 102 COLD SPRINGS 9630 12.4 7.6 163 14.7 12.5 118 DEER PARK 9700 -M -M * 24.2 -M * HOBBS PARK 10100 19.1 17.3 110 17.5 16.6 105 LITTLE WARM 9620 12.7 11.8 108 15.7 15.6 101 SOUTH PASS 9040 17.3 17.9 97 20.7 19.8 105 ST. LAWRENCE ALT 8620 11.6 6.1 190 12.7 12.0 106 TOGWOTEE PASS 9580 24.8 27.7 90 26.4 31.2 85 TOWNSEND CREEK 8700 13.3 9.9 134 16.8 14.8 114 ----- ----- Basin wide percent of average 114 102 BIGHORN BASIN BALD MTN. 9375 22.6 23.3 97 20.3 20.0 102 BEAR TRAP MEADOW 7900 7.2 5.4 133 12.0 10.0 120 BLACKWATER 9780 22.4 25.3 89 20.3 20.0 102 BONE SPRINGS DIV 9350 18.5 18.3 101 19.6 17.4 113 EVENING STAR 9200 24.0 30.1 80 26.9 25.2 107 GRAVE SPRINGS 8550 13.0 -M * 13.9 11.7 119 KIRWIN 9550 13.6 11.4 119 15.7 12.7 124 MARQUETTE 8760 15.3 8.6 178 16.4 12.6 130 MIDDLE POWDER 7760 13.3 14.3 93 13.4 14.1 95 OWL CREEK 8975 8.9 4.0 223 9.7 7.7 126 POWDER RIVER PASS 9480 14.1 11.0 128 16.1 14.0 115 SHELL CREEK 9580 16.9 16.7 101 13.7 15.2 90 SYLVAN LAKE 8420 18.7 23.8 79 22.4 21.6 104 SYLVAN ROAD 8120 8.3 9.2 90 15.1 18.0 84 TIMBER CREEK 7950 9.7 6.3 154 12.7 9.3 137 YOUNTS PEAK 8350 16.1 18.3 88 16.7 18.7 89 ----- ----- Basin wide percent of average 102 107 SHOSHONE RIVER BLACKWATER 9780 22.4 25.3 89 20.3 20.0 102 EVENING STAR 9200 24.0 30.1 80 26.9 25.2 107 KIRWIN 9550 13.6 11.4 119 15.7 12.7 124 MARQUETTE 8760 15.3 8.6 178 16.4 12.6 130 SYLVAN LAKE 8420 18.7 23.8 79 22.4 21.6 104 SYLVAN ROAD 8120 8.3 9.2 90 15.1 18.0 84 YOUNTS PEAK 8350 16.1 18.3 88 16.7 18.7 89 ----- ----- Basin wide percent of average 93 104 POWDER-TONGUE BEAR TRAP MEADOW 7900 7.2 5.4 133 12.0 10.0 120 BONE SPRINGS DIV 9350 18.5 18.3 101 19.6 17.4 113 BURGESS JUNCTION 7880 13.5 13.2 102 15.0 13.7 109 CLOUD PEAK RESERVOIR 9860 19.3 17.3 112 19.7 16.2 122 DOME LAKE 8880 -M 14.9 * 16.1 15.7 103 GRAVE SPRINGS 8550 13.0 -M * 13.9 11.7 119 HANSEN SAWMILL 8760 10.4 7.2 144 13.5 9.7 139 MIDDLE POWDER 7760 13.3 14.3 93 13.4 14.1 95 POWDER RIVER PASS 9480 14.1 11.0 128 16.1 14.0 115 SUCKER CREEK 8880 14.0 13.6 103 16.7 15.7 106 TIE CREEK 6870 -M -M * -M 13.1 * ----- ----- Basin wide percent of average 110 113 BELLE FOURCHE BLIND PARK 6890 6.4 10.5 61 14.1 12.9 109 NORTH RAPID CREEK 6130 8.3 -M * 11.9 -M * WARREN PEAK 6520 12.0 10.5 114 12.6 9.8 129 ----- ----- Basin wide percent of average 88 118 UPPER N. PLATTE RIVER COLUMBINE 9400 19.5 23.1 84 25.4 27.3 93 DIVIDE PEAK 8800 20.1 20.4 99 22.7 26.3 86 ELK RIVER 8700 16.3 18.0 91 22.2 21.4 104 JOE WRIGHT 10120 23.4 24.5 96 27.0 29.1 93 NORTH FRENCH CREEK 10100 34.1 28.9 118 32.4 27.0 120 OLD BATTLE 10000 35.4 37.2 95 38.6 34.4 112 SOUTH BRUSH CREEK 8400 6.4 11.7 55 14.3 19.6 73 TOWER 10500 53.0 50.2 106 44.8 41.6 108 WEBBER SPRINGS 9200 21.7 27.1 80 28.5 29.3 97 WILLOW CREEK PASS 9540 9.0 13.5 67 9.6 14.7 65 ----- ----- Basin wide percent of average 94 98 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 25.4 28.9 88 24.6 22.8 108 CASPER MTN. 7900 13.1 18.3 72 15.1 17.7 85 DEADMAN HILL 10220 16.6 18.5 90 16.9 20.1 84 DEER PARK 9700 -M -M * 24.2 -M * LAPRELE CREEK 8320 7.7 7.9 97 12.8 14.0 91 RENO HILL 8400 12.8 14.3 90 13.8 21.7 64 ROACH 9700 16.2 18.1 90 19.1 24.7 77 SAND LAKE 10080 30.8 36.5 84 27.1 23.8 114 SOUTH PASS 9040 17.3 17.9 97 20.7 19.8 105 WINDY PEAK 7840 7.2 8.5 85 10.8 11.6 93 ----- ----- Basin wide percent of average 87 91 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 8.5 7.5 113 17.3 17.8 97 DIVIDE PEAK 8800 20.1 20.4 99 22.7 26.3 86 OLD BATTLE 10000 35.4 37.2 95 38.6 34.4 112 SANDSTONE RS 8150 11.8 12.2 97 21.5 22.0 98 WHISKEY PARK 8950 29.9 30.1 99 30.9 32.6 95 ----- ----- Basin wide percent of average 98 98 UPPER GREEN RIVER BIG SANDY OPENING 9100 13.5 14.6 92 13.7 18.1 76 BLIND BULL SUM 8650 25.0 26.3 95 20.7 26.4 78 EAST RIM DIVIDE 7930 13.3 14.9 89 13.4 16.9 79 ELKHART PARK G.S. 9400 -M 14.4 * 15.1 17.8 85 GROS VENTRE SUMMIT 8775 12.1 14.8 82 14.6 17.7 82 KENDALL R.S. 7740 12.2 11.7 104 16.6 17.2 97 LOOMIS PARK 8240 -M 15.9 * 18.9 20.9 90 NEW FORK LAKE 8340 10.8 9.8 110 12.4 16.0 78 SNIDER BASIN 8250 13.6 14.1 96 14.0 16.8 83 SPRING CREEK DIVIDE 9000 25.2 29.5 85 23.9 30.2 79 TRIPLE PEAK 8500 20.7 25.8 80 24.0 34.2 70 ----- ----- Basin wide percent of average 91 81 LOWER GREEN RIVER HAMS FORK 7840 7.9 5.7 139 12.8 14.8 86 HEWINTA 9500 11.1 6.9 161 17.2 15.6 110 HICKERSON PARK 9150 12.8 4.5 284 15.0 11.6 129 HOLE-IN-ROCK 9150 8.8 4.0 220 13.0 11.6 112 INDIAN CREEK 9425 26.0 29.6 88 21.7 28.6 76 KELLEY R.S. 8180 14.9 16.1 93 18.1 20.8 87 STEEL CREEK PARK 10100 19.6 18.5 106 21.2 15.3 139 ----- ----- Basin wide percent of average 119 101 UPPER BEAR RIVER BUG LAKE 7950 19.6 17.8 110 23.1 21.9 105 HAYDEN FORK 9400 13.5 8.4 161 23.5 22.1 106 KELLEY R.S. 8180 14.9 16.1 93 18.1 20.8 87 LILY LAKE 9050 14.4 10.5 137 20.4 17.3 118 MONTE CRISTO 8960 31.3 27.6 113 29.3 29.2 100 SALT RIVER SUMMIT 7600 14.5 12.1 120 19.9 18.8 106 TRIAL LAKE 9960 24.7 24.9 99 26.1 27.3 96 ----- ----- Basin wide percent of average 113 102 ----------------------------------------------------------------------------- -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.