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 THURSDAY: APRIL 10 , 2003 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 19.7 17.3 114 23.0 22.5 102 COTTONWOOD CREEK 7600 23.1 23.9 97 25.1 29.0 87 GRANITE CREEK 6770 13.9 17.6 79 17.4 20.8 84 GRASSY LAKE 7265 33.8 36.7 92 34.0 37.8 90 GROS VENTRE SUMMIT 8775 13.4 14.5 92 12.1 13.7 88 LEWIS LAKE DIVIDE 7860 -M 36.4 * -M 38.5 * PHILLIPS BENCH 8200 -M 30.1 * -M 30.5 * SALT RIVER SUMMIT 7600 11.9 14.5 82 14.6 19.8 74 SNAKE RIVER STATION 6920 14.5 18.1 80 21.8 23.4 93 SPRING CREEK DIVIDE 9000 26.6 27.9 95 24.3 27.8 87 THUMB DIVIDE 7980 16.1 18.9 85 17.0 20.0 85 TOGWOTEE PASS 9580 24.5 26.2 94 24.9 26.1 95 TWO OCEAN PLATEAU 9360 33.2 29.8 111 27.4 29.2 94 WILLOW CREEK 8450 30.8 31.4 98 34.7 34.1 102 ----- ----- Basin wide percent of average 94 91 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 26.8 24.8 108 23.4 21.3 110 BLACK BEAR 8170 33.8 40.5 83 31.4 42.4 74 CANYON 8090 13.9 13.9 100 15.1 16.2 93 FISHER CREEK 9100 37.3 36.4 102 34.9 38.3 91 MADISON PLATEAU 7750 20.4 25.9 79 20.3 28.1 72 NORTHEAST ENTRANCE 7350 11.1 10.9 102 13.6 13.4 101 PARKER PEAK 9400 25.8 22.9 113 21.0 17.3 121 SYLVAN LAKE 8420 -M 23.7 * -M 22.2 * THUMB DIVIDE 7980 16.1 18.9 85 17.0 20.0 85 TWO OCEAN PLATEAU 9360 33.2 29.8 111 27.4 29.2 94 WHISKEY CREEK 6800 12.2 17.7 69 15.6 22.1 71 WHITE MILL 8700 27.7 25.5 109 24.2 28.5 85 WOLVERINE 7650 11.6 11.2 104 12.8 13.6 94 ----- ----- Basin wide percent of average 97 88 WIND RIVER BURROUGHS CREEK 8750 18.0 15.0 120 19.6 17.3 113 COLD SPRINGS 9630 8.5 7.8 109 10.9 11.7 93 DEER PARK 9700 15.8 17.1 92 18.5 23.6 78 HOBBS PARK 10100 15.2 16.2 94 14.0 14.1 99 LITTLE WARM 9370 9.8 12.3 80 11.6 14.5 80 SOUTH PASS 9040 14.9 17.3 86 15.2 19.8 77 ST. LAWRENCE ALT 8620 7.6 7.3 104 9.2 9.9 93 TOGWOTEE PASS 9580 24.5 26.2 94 24.9 26.1 95 TOWNSEND CREEK 8700 10.7 9.4 114 12.8 12.8 100 ----- ----- Basin wide percent of average 97 91 BIGHORN BASIN BALD MTN. 9380 19.9 21.2 94 18.0 18.6 97 BEAR TRAP MEADOW 8200 7.5 4.9 153 8.9 9.1 98 BLACKWATER 9780 26.7 26.1 102 23.2 21.9 106 BONE SPRINGS DIV 9350 17.1 17.2 99 17.2 15.8 109 EVENING STAR 9200 30.5 31.3 97 32.7 26.8 122 GRAVE SPRINGS 8550 7.1 10.2 70 8.3 10.7 78 KIRWIN 9550 12.8 12.0 107 13.6 12.2 111 MARQUETTE 8760 13.0 10.0 130 14.0 11.0 127 MIDDLE POWDER 7760 9.2 13.2 70 7.8 13.4 58 OWL CREEK 8975 6.6 5.3 125 6.6 6.6 100 POWDER RIVER PASS 9480 11.4 11.5 99 13.0 13.4 97 SHELL CREEK 9580 16.5 15.7 105 15.0 14.4 104 SYLVAN LAKE 8420 -M 23.7 * -M 22.2 * SYLVAN ROAD 7120 14.1 12.4 114 18.0 18.6 97 TIMBER CREEK 7950 6.5 5.7 114 7.7 8.3 93 YOUNTS PEAK 8350 17.0 17.8 96 17.0 17.1 99 ----- ----- Basin wide percent of average 101 101 SHOSHONE RIVER BLACKWATER 9780 26.7 26.1 102 23.2 21.9 106 EVENING STAR 9200 30.5 31.3 97 32.7 26.8 122 KIRWIN 9550 12.8 12.0 107 13.6 12.2 111 MARQUETTE 8760 13.0 10.0 130 14.0 11.0 127 SYLVAN LAKE 8420 -M 23.7 * -M 22.2 * SYLVAN ROAD 7120 14.1 12.4 114 18.0 18.6 97 YOUNTS PEAK 8350 17.0 17.8 96 17.0 17.1 99 ----- ----- Basin wide percent of average 104 110 POWDER-TONGUE BEAR TRAP MEADOW 8200 7.5 4.9 153 8.9 9.1 98 BIG GOOSE 7990 12.5 11.8 106 14.2 9.8 145 BONE SPRINGS DIV 9350 17.1 17.2 99 17.2 15.8 109 BURGESS JUNCTION 7880 12.8 12.7 101 13.4 13.2 102 CLOUD PEAK RESERVOIR 9860 16.9 14.7 115 14.9 14.2 105 DOME LAKE 8880 14.8 13.5 110 15.8 14.3 110 GRAVE SPRINGS 8550 7.1 10.2 70 8.3 10.7 78 HANSEN SAWMILL 8360 9.3 6.3 148 10.8 9.0 120 MIDDLE POWDER 7760 9.2 13.2 70 7.8 13.4 58 POWDER RIVER PASS 9480 11.4 11.5 99 13.0 13.4 97 SUCKER CREEK 8880 15.1 12.9 117 16.3 14.7 111 TIE CREEK 6870 7.5 5.6 134 13.6 11.0 124 ----- ----- Basin wide percent of average 105 104 BELLE FOURCHE BLIND PARK 6890 7.3 8.0 91 10.5 12.0 88 COLE CANYON 5910 3.4 -M * 6.9 -M * NORTH RAPID CREEK 6130 5.3 8.6 62 8.5 9.4 90 ----- ----- Basin wide percent of average 76 89 UPPER N. PLATTE RIVER COLUMBINE 9400 23.8 24.8 96 25.4 26.5 96 DIVIDE PEAK 8800 22.8 20.6 111 21.8 21.9 100 ELK RIVER 8700 19.0 19.6 97 20.0 20.7 97 JOE WRIGHT 10120 26.1 22.9 114 29.6 26.5 112 NORTH FRENCH CREEK 10100 32.9 31.5 104 31.1 26.3 118 OLD BATTLE 10000 -M 33.9 * -M 36.3 * SAGE CREEK BASIN 7850 11.0 11.9 92 12.9 12.7 102 SOUTH BRUSH CREEK 8400 14.4 13.3 108 18.2 17.5 104 TOWER 10500 45.4 48.2 94 -M 40.6 * WEBBER SPRINGS 9200 22.7 26.2 87 26.2 28.1 93 WILLOW CREEK PASS 9540 16.1 13.1 123 14.6 13.7 107 ----- ----- Basin wide percent of average 101 103 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 18.9 25.6 74 22.0 23.6 93 CASPER MTN. 7900 15.6 16.0 98 12.7 15.9 80 DEADMAN HILL 10220 15.2 17.6 86 18.6 18.2 102 DEER PARK 9700 15.8 17.1 92 18.5 23.6 78 LAPRELE CREEK 8320 -M 10.5 * 12.7 13.8 92 RENO HILL 8400 13.3 15.3 87 14.7 16.6 89 ROACH 9700 18.3 18.0 102 20.3 19.8 103 SAND LAKE 10080 -M 34.2 * -M 25.7 * SOUTH PASS 9040 14.9 17.3 86 15.2 19.8 77 WINDY PEAK 7840 9.9 8.0 124 11.7 11.5 102 ----- ----- Basin wide percent of average 90 90 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 9.8 9.5 103 15.9 16.7 95 DIVIDE PEAK 8800 22.8 20.6 111 21.8 21.9 100 OLD BATTLE 10000 -M 33.9 * -M 36.3 * SANDSTONE RS 8150 14.5 13.9 104 18.9 19.7 96 WHISKEY PARK 8950 29.0 30.6 95 28.2 30.3 93 ----- ----- Basin wide percent of average 102 96 UPPER GREEN RIVER BIG SANDY OPENING 9100 12.3 15.1 81 11.5 14.2 81 BLIND BULL SUM 8650 23.5 28.7 82 17.6 23.3 76 EAST RIM DIVIDE 7930 10.7 13.8 78 10.6 12.7 83 ELKHART PARK G.S. 9400 13.2 13.9 95 13.1 14.2 92 GROS VENTRE SUMMIT 8775 13.4 14.5 92 12.1 13.7 88 KENDALL R.S. 7740 12.2 14.0 87 13.5 15.3 88 LOOMIS PARK 8240 17.6 17.2 102 16.5 18.3 90 NEW FORK LAKE 8340 10.9 11.3 96 -M 12.0 * SNIDER BASIN 8250 13.7 14.8 93 13.7 17.0 81 SPRING CREEK DIVIDE 9000 26.6 27.9 95 24.3 27.8 87 TRIPLE PEAK 8500 25.2 25.6 98 27.2 26.2 104 ----- ----- Basin wide percent of average 91 88 LOWER GREEN RIVER HAMS FORK 7840 10.8 10.7 101 11.1 13.0 85 HEWINTA 9500 11.8 12.2 97 12.7 15.6 81 HICKERSON PARK 9150 7.0 8.1 86 9.1 8.7 105 HOLE-IN-ROCK 9150 7.8 7.3 107 9.5 8.2 116 INDIAN CREEK 9425 24.7 29.1 85 20.4 26.8 76 KELLEY R.S. 8180 13.7 17.2 80 15.1 21.5 70 STEEL CREEK PARK 10100 14.0 16.8 83 14.0 17.5 80 ----- ----- Basin wide percent of average 89 83 UPPER BEAR RIVER BUG LAKE 7950 17.4 21.5 81 16.7 20.4 82 HAYDEN FORK 9400 14.2 16.5 86 18.7 22.4 83 KELLEY R.S. 8180 13.7 17.2 80 15.1 21.5 70 LILY LAKE 9050 13.1 14.1 93 15.1 18.7 81 MONTE CRISTO 8960 16.3 30.4 54 21.7 27.1 80 SALT RIVER SUMMIT 7600 11.9 14.5 82 14.6 19.8 74 TRIAL LAKE 9960 15.0 26.0 58 17.1 26.5 65 ----- ----- Basin wide percent of average 72 76 ----------------------------------------------------------------------------- -M = Missing data * = Data may not provide a valid measure of conditions. Units = inches for the Current and Average Snow Water Equivalent and Total Precipitation values 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 1971-2000. 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.