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 MONDAY: APRIL 8 , 2002 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 11.1 17.5 63 19.0 22.2 86 COTTONWOOD CREEK 7600 16.3 24.0 68 20.9 28.6 73 GRANITE CREEK 6770 11.5 17.8 65 16.4 20.6 80 GRASSY LAKE 7265 26.7 36.5 73 33.2 37.2 89 GROS VENTRE SUMMIT 8775 12.8 14.5 88 11.9 13.5 88 LEWIS LAKE DIVIDE 7860 27.5 36.2 76 30.7 38.0 81 PHILLIPS BENCH 8200 20.7 29.9 69 24.1 30.1 80 SALT RIVER SUMMIT 7600 9.8 14.5 68 12.9 19.5 66 SNAKE RIVER STATION 6920 -M 18.4 * -M 23.1 * SPRING CREEK DIVIDE 9000 20.7 27.7 75 20.3 27.4 74 THUMB DIVIDE 7980 14.4 18.9 76 17.7 19.7 90 TOGWOTEE PASS 9580 20.6 25.9 80 20.1 25.7 78 TWO OCEAN PLATEAU 9360 27.7 29.5 94 24.4 28.9 84 WILLOW CREEK 8450 21.4 31.2 69 29.7 33.6 88 ----- ----- Basin wide percent of average 74 82 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 20.9 24.6 85 19.9 21.7 92 BLACK BEAR 8170 37.2 40.3 92 37.2 40.9 91 CANYON 8090 12.6 13.9 91 14.6 16.6 88 FISHER CREEK 9100 32.6 36.2 90 31.2 32.6 96 MADISON PLATEAU 7750 -M 25.8 * -M 26.9 * NORTHEAST ENTRANCE 7350 6.7 11.0 61 10.1 13.1 77 PARKER PEAK 9400 19.6 22.6 87 16.3 18.8 87 SYLVAN LAKE 8420 18.4 23.5 78 21.5 24.3 88 THUMB DIVIDE 7980 14.4 18.9 76 17.7 19.7 90 TWO OCEAN PLATEAU 9360 27.7 29.5 94 24.4 28.9 84 WHISKEY CREEK 6800 14.7 17.6 84 20.4 21.8 94 WHITE MILL 8700 21.2 25.3 84 18.8 25.9 73 WOLVERINE 7650 6.6 11.3 58 10.2 13.7 74 ----- ----- Basin wide percent of average 85 87 WIND RIVER BURROUGHS CREEK 8750 14.0 14.9 94 14.7 17.4 84 COLD SPRINGS 9630 3.8 8.1 47 6.7 11.5 58 DEER PARK 9700 11.6 17.1 68 15.5 -M * HOBBS PARK 10100 10.8 15.9 68 10.2 13.9 73 LITTLE WARM 9370 9.7 12.2 80 11.9 13.5 88 SOUTH PASS 9040 11.1 17.2 65 11.7 18.5 63 ST. LAWRENCE ALT 8620 3.8 7.3 52 5.9 9.5 62 TOGWOTEE PASS 9580 20.6 25.9 80 20.1 25.7 78 TOWNSEND CREEK 8700 5.1 9.3 55 6.6 12.7 52 ----- ----- Basin wide percent of average 71 72 BIGHORN BASIN BALD MTN. 9380 15.9 20.9 76 14.4 18.4 78 BEAR TRAP MEADOW 8200 4.2 5.0 84 7.9 9.1 87 BLACKWATER 9780 21.0 25.9 81 18.7 22.0 85 BONE SPRINGS DIV 9350 13.2 17.0 78 13.0 16.3 80 EVENING STAR 9200 23.4 31.1 75 25.2 27.8 91 GRAVE SPRINGS 8550 6.9 10.1 68 8.9 14.1 63 KIRWIN 9550 9.8 11.9 82 10.6 12.1 88 MARQUETTE 8760 6.9 9.8 70 7.2 10.4 69 MIDDLE POWDER 7760 6.9 12.9 53 8.0 12.9 62 OWL CREEK 8975 4.3 5.4 80 4.7 6.5 72 POWDER RIVER PASS 9480 8.7 11.4 76 10.9 13.2 83 SHELL CREEK 9580 13.0 15.5 84 12.1 14.3 85 SYLVAN LAKE 8420 18.4 23.5 78 21.5 24.3 88 SYLVAN ROAD 7120 10.4 12.5 83 15.8 20.2 78 TIMBER CREEK 7950 3.4 5.8 59 5.1 8.7 59 YOUNTS PEAK 8350 14.0 17.7 79 14.7 16.9 87 ----- ----- Basin wide percent of average 76 80 SHOSHONE RIVER BLACKWATER 9780 21.0 25.9 81 18.7 22.0 85 EVENING STAR 9200 23.4 31.1 75 25.2 27.8 91 KIRWIN 9550 9.8 11.9 82 10.6 12.1 88 MARQUETTE 8760 6.9 9.8 70 7.2 10.4 69 SYLVAN LAKE 8420 18.4 23.5 78 21.5 24.3 88 SYLVAN ROAD 7120 10.4 12.5 83 15.8 20.2 78 YOUNTS PEAK 8350 14.0 17.7 79 14.7 16.9 87 ----- ----- Basin wide percent of average 78 85 POWDER-TONGUE BEAR TRAP MEADOW 8200 4.2 5.0 84 7.9 9.1 87 BIG GOOSE 7990 8.7 11.6 75 10.8 10.9 99 BONE SPRINGS DIV 9350 13.2 17.0 78 13.0 16.3 80 BURGESS JUNCTION 7880 9.0 12.4 73 10.3 12.8 80 CLOUD PEAK RESERVOIR 9860 13.4 14.4 93 12.6 14.7 86 DOME LAKE 8880 10.4 13.3 78 12.3 14.1 87 GRAVE SPRINGS 8550 6.9 10.1 68 8.9 14.1 63 HANSEN SAWMILL 8360 5.4 6.3 86 7.9 9.2 86 MIDDLE POWDER 7760 6.9 12.9 53 8.0 12.9 62 POWDER RIVER PASS 9480 8.7 11.4 76 10.9 13.2 83 SUCKER CREEK 8880 10.4 12.7 82 13.6 14.7 93 TIE CREEK 6870 5.6 5.7 98 10.4 10.5 99 ----- ----- Basin wide percent of average 77 83 BELLE FOURCHE BLIND PARK 6890 6.1 8.1 75 9.8 11.3 87 COLE CANYON 5910 5.7 6.0 95 7.0 -M * NORTH RAPID CREEK 6130 6.2 8.6 72 7.8 9.1 86 ----- ----- Basin wide percent of average 79 86 UPPER N. PLATTE RIVER COLUMBINE 9400 13.7 24.9 55 18.1 26.1 69 DIVIDE PEAK 8800 13.1 20.4 64 16.7 21.5 78 ELK RIVER 8700 12.4 19.6 63 15.1 20.4 74 JOE WRIGHT 10120 -M 22.6 * 18.9 25.9 73 NORTH FRENCH CREEK 10100 15.7 31.1 50 19.8 25.7 77 OLD BATTLE 10000 20.3 33.5 61 24.3 35.8 68 SAGE CREEK BASIN 7850 7.7 -M * 12.3 -M * SOUTH BRUSH CREEK 8400 9.3 13.2 70 11.9 17.2 69 TOWER 10500 28.5 47.6 60 27.0 39.9 68 WEBBER SPRINGS 9200 14.1 26.2 54 18.2 27.7 66 WILLOW CREEK PASS 9540 8.0 12.8 62 9.3 13.5 69 ----- ----- Basin wide percent of average 59 71 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 13.4 25.2 53 14.1 23.1 61 CASPER MTN. 7900 9.2 15.7 59 10.0 15.5 65 DEADMAN HILL 10220 9.7 17.4 56 11.7 17.7 66 DEER PARK 9700 11.6 17.1 68 15.5 -M * LAPRELE CREEK 8320 6.0 10.6 57 10.1 13.4 75 RENO HILL 8400 10.1 15.1 67 10.4 16.0 65 ROACH 9700 8.7 17.8 49 11.8 19.5 61 SAND LAKE 10080 20.5 33.9 60 19.7 25.2 78 SOUTH PASS 9040 11.1 17.2 65 11.7 18.5 63 WINDY PEAK 7840 5.4 8.1 67 8.6 11.2 77 ----- ----- Basin wide percent of average 59 68 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 6.9 9.8 70 9.9 16.4 60 DIVIDE PEAK 8800 13.1 20.4 64 16.7 21.5 78 OLD BATTLE 10000 20.3 33.5 61 24.3 35.8 68 SANDSTONE RS 8150 5.1 14.1 36 13.6 19.4 70 WHISKEY PARK 8950 19.1 30.5 63 21.2 29.8 71 ----- ----- Basin wide percent of average 60 70 UPPER GREEN RIVER BIG SANDY OPENING 9100 11.8 15.0 79 10.9 14.0 78 BLIND BULL SUM 8650 20.8 28.6 73 16.6 23.0 72 EAST RIM DIVIDE 7930 10.3 13.7 75 10.4 12.5 83 ELKHART PARK G.S. 9400 10.1 13.8 73 10.7 14.0 76 GROS VENTRE SUMMIT 8775 12.8 14.5 88 11.9 13.5 88 KENDALL R.S. 7740 8.8 14.1 62 12.6 15.1 83 LOOMIS PARK 8240 15.3 17.3 88 14.5 18.1 80 NEW FORK LAKE 8340 8.7 11.3 77 9.1 11.8 77 SNIDER BASIN 8250 9.1 14.8 61 11.8 16.7 71 SPRING CREEK DIVIDE 9000 20.7 27.7 75 20.3 27.4 74 TRIPLE PEAK 8500 19.0 25.5 75 22.3 25.7 87 ----- ----- Basin wide percent of average 75 79 LOWER GREEN RIVER HAMS FORK 7840 7.8 11.0 71 8.5 12.9 66 HEWINTA 9500 7.3 12.2 60 12.1 15.3 79 HICKERSON PARK 9150 4.2 8.0 52 7.7 8.4 92 HOLE-IN-ROCK 9150 3.5 7.2 49 7.2 7.9 91 INDIAN CREEK 9425 20.7 28.9 72 17.6 26.5 66 KELLEY R.S. 8180 12.2 17.1 71 14.9 21.1 71 STEEL CREEK PARK 10100 11.5 16.6 69 12.4 17.1 73 ----- ----- Basin wide percent of average 67 74 UPPER BEAR RIVER BUG LAKE 7950 16.6 21.4 78 15.8 20.1 79 HAYDEN FORK 9400 9.1 16.6 55 17.3 21.9 79 KELLEY R.S. 8180 12.2 17.1 71 14.9 21.1 71 LILY LAKE 9050 8.8 14.0 63 14.1 18.3 77 MONTE CRISTO 8960 21.0 30.4 69 22.8 26.7 85 SALT RIVER SUMMIT 7600 9.8 14.5 68 12.9 19.5 66 TRIAL LAKE 9960 15.3 25.9 59 19.1 26.0 73 ----- ----- Basin wide percent of average 66 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.