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 WEDNESDAY: MARCH 7 , 2001 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 8.3 16.1 52 10.7 20.6 52 COTTONWOOD CREEK 7600 14.2 19.8 72 15.7 23.0 68 GRANITE CREEK 6770 10.8 16.1 67 13.4 21.7 62 GRASSY LAKE 7265 18.7 31.1 60 20.7 33.6 62 GROS VENTRE SUMMIT 8775 8.3 13.5 61 7.5 14.6 51 LEWIS LAKE DIVIDE 7860 15.3 30.9 50 16.5 34.1 48 PHILLIPS BENCH 8200 15.1 25.4 59 -M 27.0 * SALT RIVER SUMMIT 7600 7.6 12.6 60 10.5 15.5 68 SNAKE RIVER STATION 6920 9.7 16.8 58 13.0 23.6 55 SPRING CREEK DIVIDE 9000 14.7 24.4 60 14.5 24.9 58 THUMB DIVIDE 7980 6.3 14.9 42 8.4 19.3 44 TOGWOTEE PASS 9580 14.4 21.7 66 14.5 25.5 57 TWO OCEAN PLATEAU 9360 16.1 23.3 69 14.2 28.4 50 WILLOW CREEK 8450 16.0 26.9 59 20.4 29.4 69 ----- ----- Basin wide percent of average 60 57 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 10.1 20.7 49 9.4 15.7 60 BLACK BEAR 7950 19.9 33.2 60 20.8 35.2 59 CANYON 7940 7.7 11.2 69 10.0 12.5 80 FISHER CREEK 9100 16.2 31.5 51 17.3 31.9 54 MADISON PLATEAU 7750 11.4 21.5 53 13.6 22.7 60 NORTHEAST ENTRANCE 7350 4.6 8.4 55 6.4 10.5 61 PARKER PEAK 9400 11.8 18.9 62 10.8 13.6 79 SYLVAN LAKE 8420 11.0 19.3 57 14.0 16.9 83 THUMB DIVIDE 7980 6.3 14.9 42 8.4 19.3 44 TWO OCEAN PLATEAU 9360 16.1 23.3 69 14.2 28.4 50 WHISKEY CREEK 6800 6.3 15.1 42 11.5 18.8 61 WHITE MILL 8700 11.3 22.2 51 11.2 24.7 45 WOLVERINE 7650 6.6 10.5 63 6.8 11.3 60 ----- ----- Basin wide percent of average 56 59 WIND RIVER BURROUGHS CREEK 8750 7.5 13.6 55 8.2 14.5 57 COLD SPRINGS 9630 3.0 7.3 41 3.9 8.8 44 DEER PARK 9700 9.5 -M * 10.5 -M * HOBBS PARK 10100 5.8 12.7 46 5.3 11.8 45 LITTLE WARM 9620 6.3 9.7 65 6.7 11.3 59 SOUTH PASS 9040 -M 14.5 * 7.8 14.4 54 ST. LAWRENCE ALT 8620 2.7 6.5 42 3.4 8.4 40 TOGWOTEE PASS 9580 14.4 21.7 66 14.5 25.5 57 TOWNSEND CREEK 8700 4.4 8.4 52 5.2 10.3 50 ----- ----- Basin wide percent of average 55 52 BIGHORN BASIN BALD MTN. 9375 11.1 17.8 62 10.1 14.7 69 BEAR TRAP MEADOW 7900 4.3 6.2 69 4.4 6.7 66 BLACKWATER 9780 11.5 18.9 61 10.5 15.8 66 BONE SPRINGS DIV 9350 8.2 14.0 59 8.9 12.4 72 EVENING STAR 9200 11.7 23.5 50 15.4 19.7 78 GRAVE SPRINGS 8550 5.0 8.0 62 5.5 7.8 71 KIRWIN 9550 4.8 8.5 56 5.5 9.0 61 MARQUETTE 8760 3.1 6.8 46 4.3 7.6 57 MIDDLE POWDER 7760 6.3 10.2 62 6.0 9.7 62 OWL CREEK 8975 2.9 3.9 74 3.1 5.2 60 POWDER RIVER PASS 9480 5.0 9.3 54 6.7 9.8 68 SHELL CREEK 9580 8.0 13.1 61 7.7 11.1 69 SYLVAN LAKE 8420 11.0 19.3 57 14.0 16.9 83 SYLVAN ROAD 8120 6.2 11.7 53 10.2 14.1 72 TIMBER CREEK 7950 2.3 5.2 44 3.4 5.5 62 YOUNTS PEAK 8350 7.2 15.3 47 8.1 14.4 56 ----- ----- Basin wide percent of average 57 69 SHOSHONE RIVER BLACKWATER 9780 11.5 18.9 61 10.5 15.8 66 EVENING STAR 9200 11.7 23.5 50 15.4 19.7 78 KIRWIN 9550 4.8 8.5 56 5.5 9.0 61 MARQUETTE 8760 3.1 6.8 46 4.3 7.6 57 SYLVAN LAKE 8420 11.0 19.3 57 14.0 16.9 83 SYLVAN ROAD 8120 6.2 11.7 53 10.2 14.1 72 YOUNTS PEAK 8350 7.2 15.3 47 8.1 14.4 56 ----- ----- Basin wide percent of average 53 70 POWDER-TONGUE BEAR TRAP MEADOW 7900 4.3 6.2 69 4.4 6.7 66 BIG GOOSE 7990 4.6 -M * 5.8 -M * BONE SPRINGS DIV 9350 8.2 14.0 59 8.9 12.4 72 BURGESS JUNCTION 7880 6.2 10.1 61 6.5 9.2 71 CLOUD PEAK RESERVOIR 9860 7.8 11.9 66 7.3 10.9 67 DOME LAKE 8880 7.5 11.8 64 6.8 10.9 62 GRAVE SPRINGS 8550 5.0 8.0 62 5.5 7.8 71 HANSEN SAWMILL 8760 3.8 6.0 63 4.8 6.4 75 MIDDLE POWDER 7760 6.3 10.2 62 6.0 9.7 62 POWDER RIVER PASS 9480 5.0 9.3 54 6.7 9.8 68 SUCKER CREEK 8880 6.3 10.2 62 7.8 11.0 71 TIE CREEK 6870 3.7 -M * 6.0 8.7 69 ----- ----- Basin wide percent of average 62 68 BELLE FOURCHE BLIND PARK 6890 6.1 9.5 64 8.9 8.1 110 COLE CANYON 5910 4.8 9.5 51 8.4 6.5 129 NORTH RAPID CREEK 6130 6.4 -M * 7.4 -M * ----- ----- Basin wide percent of average 57 118 UPPER N. PLATTE RIVER COLUMBINE 9400 18.4 22.0 84 17.0 21.3 80 DIVIDE PEAK 8800 12.0 17.6 68 14.7 19.5 75 ELK RIVER 8700 14.9 17.4 86 13.3 16.2 82 JOE WRIGHT 10120 -M 18.3 * -M 21.1 * NORTH FRENCH CREEK 10100 21.2 21.5 99 16.2 19.8 82 OLD BATTLE 10000 20.0 27.3 73 22.3 25.6 87 SOUTH BRUSH CREEK 8400 8.2 10.2 80 4.9 13.6 36 TOWER 10500 30.0 39.0 77 28.4 31.2 91 WEBBER SPRINGS 9200 14.6 23.4 62 15.8 21.6 73 WILLOW CREEK PASS 9540 9.8 9.8 100 10.3 10.4 99 ----- ----- Basin wide percent of average 79 80 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 14.3 21.1 68 12.9 16.3 79 CASPER MTN. 7900 9.4 13.0 72 8.4 11.4 74 DEADMAN HILL 10220 6.5 14.1 46 9.6 13.7 70 DEER PARK 9700 9.5 -M * 10.5 -M * LAPRELE CREEK 8320 8.6 8.8 98 8.4 9.6 88 RENO HILL 8400 9.9 11.4 87 9.2 15.5 59 ROACH 9700 9.9 14.7 67 11.3 18.0 63 SAND LAKE 10080 20.1 28.1 72 16.8 17.2 98 SOUTH PASS 9040 -M 14.5 * 7.8 14.4 54 WINDY PEAK 7840 6.8 6.8 100 7.7 7.6 101 ----- ----- Basin wide percent of average 72 74 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 9.6 10.3 93 10.8 13.1 82 DIVIDE PEAK 8800 12.0 17.6 68 14.7 19.5 75 OLD BATTLE 10000 20.0 27.3 73 22.3 25.6 87 SANDSTONE RS 8150 9.4 12.8 73 13.4 16.0 84 WHISKEY PARK 8950 17.7 24.8 71 17.0 23.6 72 ----- ----- Basin wide percent of average 74 80 UPPER GREEN RIVER BIG SANDY OPENING 9100 8.9 12.7 70 8.2 14.9 55 BLIND BULL SUM 8650 13.2 25.5 52 11.5 21.7 53 EAST RIM DIVIDE 7930 8.7 12.5 70 8.0 14.0 57 ELKHART PARK G.S. 9400 9.6 12.0 80 9.5 14.7 65 GROS VENTRE SUMMIT 8775 8.3 13.5 61 7.5 14.6 51 KENDALL R.S. 7740 7.8 13.3 59 8.4 14.3 59 LOOMIS PARK 8240 10.5 15.6 67 10.6 17.3 61 NEW FORK LAKE 8340 7.9 10.2 77 7.6 13.3 57 SNIDER BASIN 8250 7.9 13.3 59 8.4 14.0 60 SPRING CREEK DIVIDE 9000 14.7 24.4 60 14.5 24.9 58 TRIPLE PEAK 8500 13.0 22.6 58 14.7 28.6 51 ----- ----- Basin wide percent of average 63 57 LOWER GREEN RIVER HAMS FORK 7840 8.0 11.1 72 6.9 12.2 57 HEWINTA 9500 6.7 9.1 74 9.8 10.8 91 HICKERSON PARK 9150 6.9 5.3 130 9.3 7.6 122 HOLE-IN-ROCK 9150 5.0 4.9 102 8.1 7.6 107 INDIAN CREEK 9425 14.9 24.3 61 12.9 23.3 55 KELLEY R.S. 8180 9.1 14.9 61 11.1 17.3 64 STEEL CREEK PARK 10100 9.2 13.3 69 10.0 10.8 93 ----- ----- Basin wide percent of average 72 76 UPPER BEAR RIVER BUG LAKE 7950 12.0 17.8 67 11.4 16.6 69 HAYDEN FORK 9400 10.0 14.4 69 13.8 16.0 86 KELLEY R.S. 8180 9.1 14.9 61 11.1 17.3 64 LILY LAKE 9050 8.5 11.1 77 10.5 12.3 85 MONTE CRISTO 8960 16.1 24.7 65 16.6 21.7 76 SALT RIVER SUMMIT 7600 7.6 12.6 60 10.5 15.5 68 TRIAL LAKE 9960 12.5 22.3 56 14.6 20.5 71 ----- ----- Basin wide percent of average 64 74 ----------------------------------------------------------------------------- -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.