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 SATURDAY: MARCH 1 , 2003 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 16.1 16.0 101 16.8 18.6 90 COTTONWOOD CREEK 7600 17.9 18.5 97 19.2 23.0 83 GRANITE CREEK 6770 11.6 16.1 72 13.1 17.4 75 GRASSY LAKE 7265 25.1 29.5 85 26.1 31.0 84 GROS VENTRE SUMMIT 8775 8.5 11.5 74 7.9 10.8 73 LEWIS LAKE DIVIDE 7860 26.8 29.7 90 24.3 31.5 77 PHILLIPS BENCH 8200 -M 23.9 * -M 24.6 * SALT RIVER SUMMIT 7600 9.4 12.2 77 11.1 15.8 70 SNAKE RIVER STATION 6920 14.5 16.6 87 17.3 19.5 89 SPRING CREEK DIVIDE 9000 18.6 22.2 84 17.5 22.5 78 THUMB DIVIDE 7980 11.3 15.4 73 12.0 16.0 75 TOGWOTEE PASS 9580 17.6 20.7 85 17.8 20.7 86 TWO OCEAN PLATEAU 9360 22.4 23.3 96 18.1 23.4 77 WILLOW CREEK 8450 21.7 25.4 85 25.8 27.0 96 ----- ----- Basin wide percent of average 86 82 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 19.7 19.7 100 16.9 17.1 99 BLACK BEAR 8170 -M 32.9 * -M 33.3 * CANYON 8090 10.5 11.3 93 10.9 13.0 84 FISHER CREEK 9100 26.5 29.6 90 -M 30.6 * MADISON PLATEAU 7750 14.6 20.9 70 14.6 22.1 66 NORTHEAST ENTRANCE 7350 8.5 9.7 88 10.3 10.8 95 PARKER PEAK 9400 17.7 18.2 97 15.1 13.7 110 SYLVAN LAKE 8420 16.5 18.8 88 18.6 17.9 104 THUMB DIVIDE 7980 11.3 15.4 73 12.0 16.0 75 TWO OCEAN PLATEAU 9360 22.4 23.3 96 18.1 23.4 77 WHISKEY CREEK 6800 9.9 14.4 69 11.7 17.4 67 WHITE MILL 8700 20.1 20.3 99 17.5 22.7 77 WOLVERINE 7650 10.1 10.6 95 9.9 11.2 88 ----- ----- Basin wide percent of average 89 84 WIND RIVER BURROUGHS CREEK 8750 13.2 12.6 105 13.9 13.7 101 COLD SPRINGS 9630 6.3 7.2 88 7.6 8.4 90 DEER PARK 9700 9.1 14.4 63 10.9 17.8 61 HOBBS PARK 10100 9.1 11.9 76 8.3 9.9 84 LITTLE WARM 9370 7.6 9.5 80 8.3 10.9 76 SOUTH PASS 9040 9.0 14.0 64 9.7 15.0 65 ST. LAWRENCE ALT 8620 5.3 5.9 90 6.4 7.0 91 TOGWOTEE PASS 9580 17.6 20.7 85 17.8 20.7 86 TOWNSEND CREEK 8700 6.6 6.9 96 8.3 8.9 93 ----- ----- Basin wide percent of average 81 81 BIGHORN BASIN BALD MTN. 9380 14.6 16.0 91 13.0 14.1 92 BEAR TRAP MEADOW 8200 4.4 4.3 102 4.6 6.4 72 BLACKWATER 9780 16.9 20.4 83 15.2 17.2 88 BONE SPRINGS DIV 9350 11.9 13.2 90 10.7 11.6 92 EVENING STAR 9200 21.6 25.0 86 23.3 21.8 107 GRAVE SPRINGS 8550 4.1 7.3 56 4.8 7.8 62 KIRWIN 9550 7.8 9.1 86 8.3 9.2 90 MARQUETTE 8760 7.5 6.9 109 8.3 7.5 111 MIDDLE POWDER 7760 5.1 9.0 57 5.1 9.6 53 OWL CREEK 8975 5.4 4.1 132 4.7 4.4 107 POWDER RIVER PASS 9480 8.1 8.7 93 9.0 10.0 90 SHELL CREEK 9580 11.8 11.8 100 10.8 10.8 100 SYLVAN LAKE 8420 16.5 18.8 88 18.6 17.9 104 SYLVAN ROAD 7120 11.2 11.4 98 13.9 15.6 89 TIMBER CREEK 7950 4.0 4.2 95 5.2 5.4 96 YOUNTS PEAK 8350 11.3 14.6 77 11.3 13.6 83 ----- ----- Basin wide percent of average 88 91 SHOSHONE RIVER BLACKWATER 9780 16.9 20.4 83 15.2 17.2 88 EVENING STAR 9200 21.6 25.0 86 23.3 21.8 107 KIRWIN 9550 7.8 9.1 86 8.3 9.2 90 MARQUETTE 8760 7.5 6.9 109 8.3 7.5 111 SYLVAN LAKE 8420 16.5 18.8 88 18.6 17.9 104 SYLVAN ROAD 7120 11.2 11.4 98 13.9 15.6 89 YOUNTS PEAK 8350 11.3 14.6 77 11.3 13.6 83 ----- ----- Basin wide percent of average 87 96 POWDER-TONGUE BEAR TRAP MEADOW 8200 4.4 4.3 102 4.6 6.4 72 BIG GOOSE 7990 7.1 7.7 92 7.9 6.8 116 BONE SPRINGS DIV 9350 11.9 13.2 90 10.7 11.6 92 BURGESS JUNCTION 7880 8.0 9.0 89 8.3 9.5 87 CLOUD PEAK RESERVOIR 9860 10.3 10.0 103 8.0 9.8 82 DOME LAKE 8880 8.6 9.5 91 9.2 10.2 90 GRAVE SPRINGS 8550 4.1 7.3 56 4.8 7.8 62 HANSEN SAWMILL 8360 6.0 5.2 115 6.3 6.3 100 MIDDLE POWDER 7760 5.1 9.0 57 5.1 9.6 53 POWDER RIVER PASS 9480 8.1 8.7 93 9.0 10.0 90 SUCKER CREEK 8880 9.2 9.1 101 10.2 10.5 97 TIE CREEK 6870 4.6 4.9 94 8.2 7.9 104 ----- ----- Basin wide percent of average 89 87 BELLE FOURCHE BLIND PARK 6890 6.9 7.1 97 8.3 9.3 89 COLE CANYON 5910 4.7 -M * 5.9 -M * NORTH RAPID CREEK 6130 5.8 6.8 85 6.1 7.5 81 ----- ----- Basin wide percent of average 91 86 UPPER N. PLATTE RIVER COLUMBINE 9400 18.8 21.9 86 18.4 20.9 88 DIVIDE PEAK 8800 13.4 15.6 86 14.2 17.0 84 ELK RIVER 8700 14.0 16.1 87 14.9 16.1 93 JOE WRIGHT 10120 16.2 17.3 94 19.9 20.2 99 NORTH FRENCH CREEK 10100 22.3 22.7 98 22.5 20.2 111 OLD BATTLE 10000 20.4 26.3 78 24.2 28.5 85 SAGE CREEK BASIN 7850 8.1 9.0 90 10.0 9.9 101 SOUTH BRUSH CREEK 8400 10.8 10.0 108 12.9 13.3 97 TOWER 10500 -M 37.6 * -M 31.9 * WEBBER SPRINGS 9200 15.0 21.3 70 17.1 22.1 77 WILLOW CREEK PASS 9540 11.0 9.6 115 10.4 10.4 100 ----- ----- Basin wide percent of average 88 92 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 12.3 19.0 65 14.6 17.5 83 CASPER MTN. 7900 7.9 11.3 70 6.9 11.1 62 DEADMAN HILL 10220 6.9 13.0 53 9.5 13.3 71 DEER PARK 9700 9.1 14.4 63 10.9 17.8 61 LAPRELE CREEK 8320 5.4 8.9 61 6.3 10.0 63 RENO HILL 8400 7.7 10.4 74 7.9 11.5 69 ROACH 9700 10.1 13.9 73 11.7 14.9 79 SAND LAKE 10080 16.1 25.2 64 16.6 19.3 86 SOUTH PASS 9040 9.0 14.0 64 9.7 15.0 65 WINDY PEAK 7840 5.1 6.0 85 6.1 8.5 72 ----- ----- Basin wide percent of average 66 72 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 11.7 9.7 121 12.3 12.3 100 DIVIDE PEAK 8800 13.4 15.6 86 14.2 17.0 84 OLD BATTLE 10000 20.4 26.3 78 24.2 28.5 85 SANDSTONE RS 8150 10.0 12.5 80 14.8 15.7 94 WHISKEY PARK 8950 21.4 23.8 90 21.4 23.4 91 ----- ----- Basin wide percent of average 87 90 UPPER GREEN RIVER BIG SANDY OPENING 9100 8.4 12.1 69 7.6 11.3 67 BLIND BULL SUM 8650 15.8 23.1 68 12.5 19.1 65 EAST RIM DIVIDE 7930 7.6 11.0 69 7.8 10.2 76 ELKHART PARK G.S. 9400 9.7 11.1 87 9.5 10.9 87 GROS VENTRE SUMMIT 8775 8.5 11.5 74 7.9 10.8 73 KENDALL R.S. 7740 9.1 12.4 73 8.9 12.5 71 LOOMIS PARK 8240 13.4 14.5 92 11.8 14.8 80 NEW FORK LAKE 8340 7.9 9.6 82 -M 9.6 * SNIDER BASIN 8250 9.5 12.4 77 9.4 13.7 69 SPRING CREEK DIVIDE 9000 18.6 22.2 84 17.5 22.5 78 TRIPLE PEAK 8500 16.8 20.9 80 18.5 20.7 89 ----- ----- Basin wide percent of average 78 76 LOWER GREEN RIVER HAMS FORK 7840 9.1 11.0 83 8.7 10.4 84 HEWINTA 9500 -M 9.1 * -M 11.6 * HICKERSON PARK 9150 3.8 5.8 66 5.6 6.2 90 HOLE-IN-ROCK 9150 5.4 5.7 95 6.2 5.8 107 INDIAN CREEK 9425 16.3 22.3 73 14.2 21.1 67 KELLEY R.S. 8180 10.3 14.0 74 11.2 17.2 65 STEEL CREEK PARK 10100 8.8 12.7 69 9.3 12.9 72 ----- ----- Basin wide percent of average 75 75 UPPER BEAR RIVER BUG LAKE 7950 12.1 17.1 71 12.0 16.2 74 HAYDEN FORK 9400 11.8 13.2 89 13.6 17.1 80 KELLEY R.S. 8180 10.3 14.0 74 11.2 17.2 65 LILY LAKE 9050 9.0 10.8 83 10.5 14.3 73 MONTE CRISTO 8960 12.5 24.7 51 15.8 21.1 75 SALT RIVER SUMMIT 7600 9.4 12.2 77 11.1 15.8 70 TRIAL LAKE 9960 10.3 20.6 50 12.4 20.5 60 ----- ----- Basin wide percent of average 67 71 ----------------------------------------------------------------------------- -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.