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 26 , 2001 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 4.3 12.4 35 14.7 24.8 59 COTTONWOOD CREEK 7600 16.3 21.0 78 21.4 27.8 77 GRANITE CREEK 6770 9.1 14.4 63 16.2 26.3 62 GRASSY LAKE 7265 21.8 35.1 62 28.2 41.3 68 GROS VENTRE SUMMIT 8775 10.9 14.6 75 10.4 17.8 58 LEWIS LAKE DIVIDE 7860 18.4 35.1 52 23.0 42.0 55 PHILLIPS BENCH 8200 18.4 29.9 62 -M 33.1 * SALT RIVER SUMMIT 7600 6.1 11.7 52 14.0 18.9 74 SNAKE RIVER STATION 6920 7.2 17.1 42 17.8 28.9 62 SPRING CREEK DIVIDE 9000 21.5 29.5 73 19.8 30.4 65 THUMB DIVIDE 7980 7.0 15.8 44 13.7 23.2 59 TOGWOTEE PASS 9580 19.0 27.9 68 19.7 31.4 63 TWO OCEAN PLATEAU 9360 22.5 27.3 82 20.8 34.2 61 WILLOW CREEK 8450 19.3 31.8 61 28.5 35.7 80 ----- ----- Basin wide percent of average 62 65 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 14.3 25.8 55 14.1 20.7 68 BLACK BEAR 7950 27.8 39.9 70 28.2 45.6 62 CANYON 7940 10.4 11.7 89 14.0 16.0 88 FISHER CREEK 9100 21.3 38.5 55 24.4 41.4 59 MADISON PLATEAU 7750 14.4 24.4 59 19.2 29.4 65 NORTHEAST ENTRANCE 7350 2.1 6.9 30 9.1 13.6 67 PARKER PEAK 9400 17.1 23.5 73 15.8 17.8 89 SYLVAN LAKE 8420 17.0 23.8 71 21.8 21.8 100 THUMB DIVIDE 7980 7.0 15.8 44 13.7 23.2 59 TWO OCEAN PLATEAU 9360 22.5 27.3 82 20.8 34.2 61 WHISKEY CREEK 6800 7.6 16.1 47 16.5 24.4 68 WHITE MILL 8700 16.3 26.1 62 16.5 31.9 52 WOLVERINE 7650 5.0 9.3 54 9.3 14.8 63 ----- ----- Basin wide percent of average 63 67 WIND RIVER BURROUGHS CREEK 8750 9.6 13.7 70 11.5 18.9 61 COLD SPRINGS 9630 1.2 7.4 16 7.1 12.7 56 DEER PARK 9700 12.9 -M * 16.2 -M * HOBBS PARK 10100 8.7 17.5 50 8.9 16.8 53 LITTLE WARM 9620 7.9 11.4 69 9.9 15.8 63 SOUTH PASS 9040 11.2 17.9 63 12.2 20.0 61 ST. LAWRENCE ALT 8620 1.7 5.9 29 5.7 12.1 47 TOGWOTEE PASS 9580 19.0 27.9 68 19.7 31.4 63 TOWNSEND CREEK 8700 5.3 9.8 54 8.1 15.0 54 ----- ----- Basin wide percent of average 58 58 BIGHORN BASIN BALD MTN. 9375 17.8 23.5 76 16.8 20.2 83 BEAR TRAP MEADOW 7900 2.6 5.0 52 7.9 10.2 77 BLACKWATER 9780 18.3 25.4 72 17.4 20.2 86 BONE SPRINGS DIV 9350 14.1 18.3 77 14.9 17.6 85 EVENING STAR 9200 17.5 30.3 58 22.6 25.4 89 GRAVE SPRINGS 8550 7.3 11.3 65 8.3 11.9 70 KIRWIN 9550 6.9 11.5 60 8.4 12.9 65 MARQUETTE 8760 4.6 8.6 53 7.1 12.8 55 MIDDLE POWDER 7760 9.2 14.4 64 8.7 14.3 61 OWL CREEK 8975 2.0 3.8 53 5.0 7.8 64 POWDER RIVER PASS 9480 7.8 10.8 72 11.3 14.2 80 SHELL CREEK 9580 14.2 16.8 85 14.0 15.4 91 SYLVAN LAKE 8420 17.0 23.8 71 21.8 21.8 100 SYLVAN ROAD 8120 8.8 8.8 100 15.8 18.2 87 TIMBER CREEK 7950 3.2 6.2 52 6.0 9.5 63 YOUNTS PEAK 8350 10.4 18.3 57 11.6 18.9 61 ----- ----- Basin wide percent of average 68 79 SHOSHONE RIVER BLACKWATER 9780 18.3 25.4 72 17.4 20.2 86 EVENING STAR 9200 17.5 30.3 58 22.6 25.4 89 KIRWIN 9550 6.9 11.5 60 8.4 12.9 65 MARQUETTE 8760 4.6 8.6 53 7.1 12.8 55 SYLVAN LAKE 8420 17.0 23.8 71 21.8 21.8 100 SYLVAN ROAD 8120 8.8 8.8 100 15.8 18.2 87 YOUNTS PEAK 8350 10.4 18.3 57 11.6 18.9 61 ----- ----- Basin wide percent of average 66 80 POWDER-TONGUE BEAR TRAP MEADOW 7900 2.6 5.0 52 7.9 10.2 77 BIG GOOSE 7990 7.2 -M * 9.4 -M * BONE SPRINGS DIV 9350 14.1 18.3 77 14.9 17.6 85 BURGESS JUNCTION 7880 9.5 13.3 71 10.2 13.9 73 CLOUD PEAK RESERVOIR 9860 11.9 17.4 68 11.8 16.5 72 DOME LAKE 8880 10.7 14.9 72 11.6 15.9 73 GRAVE SPRINGS 8550 7.3 11.3 65 8.3 11.9 70 HANSEN SAWMILL 8760 4.9 7.1 69 8.3 9.9 84 MIDDLE POWDER 7760 9.2 14.4 64 8.7 14.3 61 POWDER RIVER PASS 9480 7.8 10.8 72 11.3 14.2 80 SUCKER CREEK 8880 8.9 13.6 65 11.6 15.9 73 TIE CREEK 6870 5.8 -M * 10.4 13.3 78 ----- ----- Basin wide percent of average 69 75 BELLE FOURCHE BLIND PARK 6890 4.5 10.2 44 12.7 13.2 96 COLE CANYON 5910 2.2 5.5 40 13.0 9.9 131 NORTH RAPID CREEK 6130 3.9 -M * 10.7 -M * ----- ----- Basin wide percent of average 43 111 UPPER N. PLATTE RIVER COLUMBINE 9400 16.6 22.8 73 24.5 27.5 89 DIVIDE PEAK 8800 17.7 20.1 88 23.0 26.6 86 ELK RIVER 8700 14.4 17.5 82 19.5 21.6 90 JOE WRIGHT 10120 -M 24.5 * -M 29.4 * NORTH FRENCH CREEK 10100 32.1 29.0 111 26.2 27.2 96 OLD BATTLE 10000 31.0 37.5 83 33.5 34.8 96 SOUTH BRUSH CREEK 8400 8.5 11.3 75 12.5 19.9 63 TOWER 10500 39.0 50.4 77 38.8 42.0 92 WEBBER SPRINGS 9200 19.3 26.8 72 24.5 29.7 82 WILLOW CREEK PASS 9540 14.1 13.5 104 15.5 14.9 104 ----- ----- Basin wide percent of average 84 89 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 22.7 28.9 79 22.0 23.1 95 CASPER MTN. 7900 12.9 18.2 71 13.7 18.0 76 DEADMAN HILL 10220 16.7 18.7 89 -M 20.4 * DEER PARK 9700 12.9 -M * 16.2 -M * LAPRELE CREEK 8320 8.7 7.5 116 13.0 14.2 92 RENO HILL 8400 16.0 14.1 113 16.2 21.9 74 ROACH 9700 15.8 18.1 87 18.7 25.0 75 SAND LAKE 10080 31.7 36.7 86 27.4 24.1 114 SOUTH PASS 9040 11.2 17.9 63 12.2 20.0 61 WINDY PEAK 7840 7.4 8.3 89 12.2 11.8 103 ----- ----- Basin wide percent of average 85 86 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 3.0 6.7 45 16.6 18.0 92 DIVIDE PEAK 8800 17.7 20.1 88 23.0 26.6 86 OLD BATTLE 10000 31.0 37.5 83 33.5 34.8 96 SANDSTONE RS 8150 7.8 11.5 68 18.8 22.3 84 WHISKEY PARK 8950 25.5 29.9 85 26.5 33.0 80 ----- ----- Basin wide percent of average 80 88 UPPER GREEN RIVER BIG SANDY OPENING 9100 11.1 14.4 77 12.3 18.2 68 BLIND BULL SUM 8650 17.9 25.3 71 15.2 26.5 57 EAST RIM DIVIDE 7930 10.9 14.9 73 10.1 17.0 59 ELKHART PARK G.S. 9400 13.3 14.3 93 13.8 17.9 77 GROS VENTRE SUMMIT 8775 10.9 14.6 75 10.4 17.8 58 KENDALL R.S. 7740 -M 11.4 * -M 17.3 * LOOMIS PARK 8240 10.3 15.7 66 14.1 21.0 67 NEW FORK LAKE 8340 7.3 9.6 76 9.9 16.1 61 SNIDER BASIN 8250 8.7 13.8 63 11.8 16.9 70 SPRING CREEK DIVIDE 9000 21.5 29.5 73 19.8 30.4 65 TRIPLE PEAK 8500 16.7 25.6 65 20.9 34.5 61 ----- ----- Basin wide percent of average 72 64 LOWER GREEN RIVER HAMS FORK 7840 2.5 5.7 44 9.5 14.9 64 HEWINTA 9500 6.1 6.5 94 13.5 15.8 85 HICKERSON PARK 9150 7.0 4.1 171 12.7 11.8 108 HOLE-IN-ROCK 9150 6.4 3.5 183 11.6 11.8 98 INDIAN CREEK 9425 19.3 29.4 66 17.6 28.8 61 KELLEY R.S. 8180 9.7 15.8 61 14.6 20.9 70 STEEL CREEK PARK 10100 14.9 18.6 80 15.5 15.6 99 ----- ----- Basin wide percent of average 79 79 UPPER BEAR RIVER BUG LAKE 7950 11.2 17.2 65 15.0 22.1 68 HAYDEN FORK 9400 9.6 7.9 122 19.7 22.4 88 KELLEY R.S. 8180 9.7 15.8 61 14.6 20.9 70 LILY LAKE 9050 8.9 10.0 89 15.5 17.5 89 MONTE CRISTO 8960 20.4 27.2 75 23.1 29.5 78 SALT RIVER SUMMIT 7600 6.1 11.7 52 14.0 18.9 74 TRIAL LAKE 9960 17.8 24.6 72 21.5 27.6 78 ----- ----- Basin wide percent of average 73 78 ----------------------------------------------------------------------------- -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 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.