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: MARCH 25 , 2010 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 7.9 17.9 44 10.0 20.9 48 COTTONWOOD CREEK 7670 14.1 23.2 61 17.8 26.5 67 GRAND TARGHEE 9260 30.7 -M * 23.8 -M * GRANITE CREEK 6770 7.8 18.6 42 10.1 19.6 52 GRASSY LAKE 7265 -M 34.7 * -M 35.1 * GROS VENTRE SUMMIT 8750 6.4 13.8 46 6.1 12.5 49 GUNSIGHT PASS 9820 6.6 -M * 7.9 -M * LEWIS LAKE DIVIDE 7850 14.5 34.6 42 16.8 35.9 47 PHILLIPS BENCH 8200 14.1 28.0 50 15.9 28.2 56 SALT RIVER SUMMIT 7760 8.4 14.1 60 10.2 18.1 56 SNAKE RIVER STATION 6920 7.0 19.0 37 12.9 21.8 59 SPRING CREEK DIVIDE 9000 15.3 25.8 59 14.8 25.6 58 THUMB DIVIDE 7980 7.4 18.6 40 10.1 18.3 55 TOGWOTEE PASS 9580 14.7 24.1 61 14.8 23.8 62 TWO OCEAN PLATEAU 9240 16.4 27.1 61 13.6 26.9 51 WILLOW CREEK 8380 18.6 29.5 63 22.2 31.2 71 ----- ----- Basin wide percent of average 52 57 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 11.9 22.8 52 11.1 19.5 57 BLACK BEAR 8170 21.4 38.1 56 21.0 39.1 54 CANYON 7870 7.2 13.4 54 8.8 15.0 59 FISHER CREEK 9100 19.7 33.9 58 19.2 35.3 54 MADISON PLATEAU 7750 12.8 24.3 53 16.1 25.8 62 NORTHEAST ENTRANCE 7350 5.0 11.0 45 7.8 12.3 63 PARKER PEAK 9400 15.6 20.9 75 11.1 15.7 71 SYLVAN LAKE 8420 11.1 21.8 51 13.6 20.3 67 THUMB DIVIDE 7980 7.4 18.6 40 10.1 18.3 55 TWO OCEAN PLATEAU 9240 16.4 27.1 61 13.6 26.9 51 WHISKEY CREEK 6800 8.0 16.6 48 10.3 20.3 51 WHITE MILL 8700 14.0 23.5 60 13.0 26.2 50 WOLVERINE 7650 6.1 11.5 53 6.1 12.5 49 ----- ----- Basin wide percent of average 55 56 WIND RIVER BURROUGHS CREEK 8750 7.6 14.2 54 6.1 15.7 39 COLD SPRINGS 9630 5.9 8.5 69 7.3 10.0 73 DEER PARK 9700 12.8 16.4 78 14.3 21.0 68 HOBBS PARK 10100 13.0 14.0 93 12.4 12.0 103 LITTLE WARM 9370 5.9 11.3 52 6.1 12.8 48 SOUTH PASS 9040 11.5 16.1 71 12.5 17.6 71 ST. LAWRENCE ALT 8620 6.7 6.9 97 8.6 8.3 104 TOGWOTEE PASS 9580 14.7 24.1 61 14.8 23.8 62 TOWNSEND CREEK 8700 10.1 8.1 125 11.8 10.8 109 ----- ----- Basin wide percent of average 74 71 BIGHORN BASIN BALD MTN. 9380 12.2 18.7 65 9.5 16.5 58 BEAR TRAP MEADOW 8200 5.8 5.3 109 6.3 7.7 82 BLACKWATER 9780 13.9 23.6 59 12.9 19.8 65 BONE SPRINGS DIV 9350 10.0 15.4 65 8.6 13.8 62 EVENING STAR 9200 16.1 28.8 56 17.5 24.5 71 GRAVE SPRINGS 8550 8.1 8.8 92 9.0 9.2 98 KIRWIN 9550 7.4 10.8 69 6.9 10.7 64 MARQUETTE 8760 6.2 8.3 75 6.8 9.0 76 MIDDLE POWDER 7760 9.1 11.1 82 7.2 11.6 62 OWL CREEK 8975 5.7 5.2 110 4.5 5.4 83 POWDER RIVER PASS 9480 8.2 10.4 79 9.0 11.7 77 SHELL CREEK 9580 10.1 14.0 72 9.1 12.6 72 SYLVAN LAKE 8420 11.1 21.8 51 13.6 20.3 67 SYLVAN ROAD 7120 5.8 12.5 46 9.4 17.2 55 TIMBER CREEK 7950 3.9 5.4 72 5.4 6.8 79 YOUNTS PEAK 8350 8.4 16.6 51 7.0 15.6 45 ----- ----- Basin wide percent of average 66 67 SHOSHONE RIVER BLACKWATER 9780 13.9 23.6 59 12.9 19.8 65 EVENING STAR 9200 16.1 28.8 56 17.5 24.5 71 KIRWIN 9550 7.4 10.8 69 6.9 10.7 64 MARQUETTE 8760 6.2 8.3 75 6.8 9.0 76 SYLVAN LAKE 8420 11.1 21.8 51 13.6 20.3 67 SYLVAN ROAD 7120 5.8 12.5 46 9.4 17.2 55 YOUNTS PEAK 8350 8.4 16.6 51 7.0 15.6 45 ----- ----- Basin wide percent of average 56 63 POWDER-TONGUE BEAR TRAP MEADOW 8200 5.8 5.3 109 6.3 7.7 82 BIG GOOSE 7990 7.1 9.6 74 8.2 8.0 103 BONE SPRINGS DIV 9350 10.0 15.4 65 8.6 13.8 62 BURGESS JUNCTION 7880 8.7 10.9 80 8.4 11.4 74 CLOUD PEAK RESERVOIR 9860 10.1 12.5 81 8.7 11.9 73 DOME LAKE 8880 7.1 11.5 62 9.0 12.3 73 GRAVE SPRINGS 8550 8.1 8.8 92 9.0 9.2 98 HANSEN SAWMILL 8360 4.9 6.3 78 5.6 7.6 74 MIDDLE POWDER 7760 9.1 11.1 82 7.2 11.6 62 POWDER RIVER PASS 9480 8.2 10.4 79 9.0 11.7 77 SUCKER CREEK 8880 10.0 11.0 91 10.5 12.7 83 TIE CREEK 6870 2.5 5.9 42 7.5 9.3 81 ----- ----- Basin wide percent of average 77 77 BELLE FOURCHE BLIND PARK 6890 4.6 8.7 53 9.2 10.6 87 COLE CANYON 5910 4.7 6.6 71 7.7 6.4 120 NORTH RAPID CREEK 6130 7.3 7.9 92 8.8 8.3 106 ----- ----- Basin wide percent of average 72 102 UPPER N. PLATTE RIVER COLUMBINE 9160 18.2 24.6 74 19.2 24.2 79 DIVIDE PEAK 8880 18.7 19.0 98 20.2 19.9 102 ELK RIVER 8700 17.1 18.8 91 17.1 18.8 91 JOE WRIGHT 10120 16.7 20.3 82 18.8 23.6 80 NORTH FRENCH CREEK 10130 31.9 27.6 116 30.4 23.6 129 OLD BATTLE 10000 27.9 31.0 90 29.9 33.3 90 SAGE CREEK BASIN 7850 14.3 11.0 130 10.2 11.5 89 SOUTH BRUSH CREEK 8440 12.9 12.6 102 16.0 15.5 103 TOWER 10500 31.9 43.6 73 28.6 36.9 78 WEBBER SPRINGS 9250 19.9 25.7 77 23.2 25.6 91 WILLOW CREEK PASS 9540 6.4 11.4 56 8.8 12.2 72 ----- ----- Basin wide percent of average 88 91 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 19.4 22.5 86 20.4 20.9 98 CASPER MTN. 7900 13.8 13.5 102 13.1 13.4 98 DEADMAN HILL 10220 17.1 15.4 111 15.5 16.0 97 DEER PARK 9700 12.8 16.4 78 14.3 21.0 68 LAPRELE CREEK 8375 8.8 10.6 83 11.2 11.9 94 RENO HILL 8400 14.9 13.2 113 15.7 13.9 113 ROACH 9700 15.6 16.2 96 18.4 17.8 103 SAND LAKE 10050 28.1 30.9 91 27.3 22.9 119 SOUTH PASS 9040 11.5 16.1 71 12.5 17.6 71 WINDY PEAK 7900 8.4 7.7 109 10.1 10.0 101 ----- ----- Basin wide percent of average 93 96 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 10.4 11.5 90 11.2 15.0 75 DIVIDE PEAK 8880 18.7 19.0 98 20.2 19.9 102 OLD BATTLE 10000 27.9 31.0 90 29.9 33.3 90 SANDSTONE RS 8150 10.3 14.9 69 13.6 18.1 75 WHISKEY PARK 8950 24.3 29.2 83 25.3 27.5 92 ----- ----- Basin wide percent of average 87 88 UPPER GREEN RIVER BIG SANDY OPENING 9080 7.5 14.0 54 7.3 12.9 57 BLIND BULL SUM 8650 13.0 27.3 48 10.0 21.6 46 EAST RIM DIVIDE 7930 4.5 12.8 35 5.8 11.7 50 ELKHART PARK G.S. 9400 7.2 13.0 55 7.5 12.8 59 GROS VENTRE SUMMIT 8750 6.4 13.8 46 6.1 12.5 49 GUNSIGHT PASS 9820 6.6 -M * 7.9 -M * KENDALL R.S. 7740 4.9 14.5 34 6.7 14.2 47 LOOMIS PARK 8240 6.5 17.1 38 8.4 16.9 50 NEW FORK LAKE 8340 4.6 11.0 42 5.1 11.0 46 POCKET CREEK 9360 6.4 -M * 9.5 -M * SNIDER BASIN 8060 8.2 14.3 57 9.1 15.6 58 SPRING CREEK DIVIDE 9000 15.3 25.8 59 14.8 25.6 58 TRIPLE PEAK 8500 15.9 24.3 65 15.8 24.0 66 ----- ----- Basin wide percent of average 50 54 LOWER GREEN RIVER HAMS FORK 7840 6.9 12.4 56 8.1 11.8 69 HEWINTA 9519 8.1 11.3 72 9.8 13.8 71 HICKERSON PARK 9145 8.3 7.0 119 9.9 7.5 132 HOLE-IN-ROCK 9150 7.1 6.8 104 8.9 7.0 127 INDIAN CREEK 9425 16.0 26.9 59 14.0 24.5 57 KELLEY R.S. 8180 9.0 16.5 55 11.1 19.6 57 STEEL CREEK PARK 10200 11.5 15.1 76 12.7 15.3 83 ----- ----- Basin wide percent of average 70 75 UPPER BEAR RIVER BUG LAKE 7950 8.0 20.3 39 11.8 18.6 63 HAYDEN FORK 9212 10.8 15.9 68 14.1 20.1 70 KELLEY R.S. 8180 9.0 16.5 55 11.1 19.6 57 LILY LAKE 9156 9.8 12.6 78 11.2 16.7 67 MONTE CRISTO 8960 15.4 29.1 53 15.3 24.6 62 SALT RIVER SUMMIT 7760 8.4 14.1 60 10.2 18.1 56 TRIAL LAKE 9992 13.1 24.3 54 11.7 24.0 49 ----- ----- Basin wide percent of average 56 60 ----------------------------------------------------------------------------- -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.