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 FRIDAY: MARCH 7 , 2003 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 18.0 16.6 108 18.5 19.2 96 COTTONWOOD CREEK 7600 19.7 19.7 100 21.0 23.9 88 GRANITE CREEK 6770 13.0 16.9 77 14.3 17.9 80 GRASSY LAKE 7265 27.2 30.9 88 28.0 32.0 88 GROS VENTRE SUMMIT 8775 9.9 12.1 82 9.2 11.2 82 LEWIS LAKE DIVIDE 7860 29.5 31.0 95 26.0 32.6 80 PHILLIPS BENCH 8200 -M 25.0 * -M 25.5 * SALT RIVER SUMMIT 7600 10.8 12.7 85 12.5 16.4 76 SNAKE RIVER STATION 6920 15.8 17.3 91 18.8 20.1 94 SPRING CREEK DIVIDE 9000 21.5 23.1 93 19.9 23.3 85 THUMB DIVIDE 7980 12.1 16.3 74 12.7 16.6 77 TOGWOTEE PASS 9580 20.2 21.6 94 20.3 21.5 94 TWO OCEAN PLATEAU 9360 25.3 24.3 104 20.2 24.3 83 WILLOW CREEK 8450 23.9 26.5 90 28.1 28.1 100 ----- ----- Basin wide percent of average 92 87 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 21.3 20.6 103 18.4 17.7 104 BLACK BEAR 8170 28.1 34.4 82 24.3 34.8 70 CANYON 8090 11.5 11.9 97 11.9 13.5 88 FISHER CREEK 9100 29.2 30.8 95 -M 31.8 * MADISON PLATEAU 7750 15.4 21.9 70 16.0 23.1 69 NORTHEAST ENTRANCE 7350 9.7 10.1 96 11.2 11.2 100 PARKER PEAK 9400 19.7 18.9 104 16.4 14.2 115 SYLVAN LAKE 8420 17.5 19.6 89 19.6 18.5 106 THUMB DIVIDE 7980 12.1 16.3 74 12.7 16.6 77 TWO OCEAN PLATEAU 9360 25.3 24.3 104 20.2 24.3 83 WHISKEY CREEK 6800 10.5 15.0 70 12.4 18.1 69 WHITE MILL 8700 22.0 21.2 104 18.8 23.6 80 WOLVERINE 7650 11.3 10.9 104 10.6 11.5 92 ----- ----- Basin wide percent of average 91 85 WIND RIVER BURROUGHS CREEK 8750 15.0 13.0 115 15.8 14.2 111 COLD SPRINGS 9630 7.2 7.5 96 8.3 8.8 94 DEER PARK 9700 10.4 14.8 70 12.6 18.6 68 HOBBS PARK 10100 10.3 12.4 83 9.2 10.5 88 LITTLE WARM 9370 8.6 10.0 86 9.4 11.4 82 SOUTH PASS 9040 10.4 14.6 71 10.8 15.7 69 ST. LAWRENCE ALT 8620 5.6 6.2 90 6.8 7.4 92 TOGWOTEE PASS 9580 20.2 21.6 94 20.3 21.5 94 TOWNSEND CREEK 8700 7.3 7.2 101 8.7 9.4 93 ----- ----- Basin wide percent of average 89 87 BIGHORN BASIN BALD MTN. 9380 16.7 16.7 100 14.8 14.8 100 BEAR TRAP MEADOW 8200 4.9 4.6 107 5.0 6.8 74 BLACKWATER 9780 19.5 21.3 92 17.2 17.9 96 BONE SPRINGS DIV 9350 13.6 13.7 99 12.5 12.2 102 EVENING STAR 9200 23.9 26.0 92 25.5 22.5 113 GRAVE SPRINGS 8550 4.2 7.7 55 4.9 8.2 60 KIRWIN 9550 8.6 9.5 91 9.1 9.6 95 MARQUETTE 8760 8.3 7.2 115 9.0 7.9 114 MIDDLE POWDER 7760 5.4 9.5 57 5.2 10.1 51 OWL CREEK 8975 5.9 4.4 134 5.2 4.7 111 POWDER RIVER PASS 9480 9.3 9.1 102 10.2 10.5 97 SHELL CREEK 9580 13.4 12.3 109 12.2 11.3 108 SYLVAN LAKE 8420 17.5 19.6 89 19.6 18.5 106 SYLVAN ROAD 7120 12.3 11.7 105 15.0 16.0 94 TIMBER CREEK 7950 4.6 4.5 102 5.6 5.8 97 YOUNTS PEAK 8350 13.3 15.1 88 12.8 14.1 91 ----- ----- Basin wide percent of average 94 96 SHOSHONE RIVER BLACKWATER 9780 19.5 21.3 92 17.2 17.9 96 EVENING STAR 9200 23.9 26.0 92 25.5 22.5 113 KIRWIN 9550 8.6 9.5 91 9.1 9.6 95 MARQUETTE 8760 8.3 7.2 115 9.0 7.9 114 SYLVAN LAKE 8420 17.5 19.6 89 19.6 18.5 106 SYLVAN ROAD 7120 12.3 11.7 105 15.0 16.0 94 YOUNTS PEAK 8350 13.3 15.1 88 12.8 14.1 91 ----- ----- Basin wide percent of average 94 102 POWDER-TONGUE BEAR TRAP MEADOW 8200 4.9 4.6 107 5.0 6.8 74 BIG GOOSE 7990 7.8 8.1 96 8.5 7.1 120 BONE SPRINGS DIV 9350 13.6 13.7 99 12.5 12.2 102 BURGESS JUNCTION 7880 9.2 9.4 98 9.5 10.0 95 CLOUD PEAK RESERVOIR 9860 11.2 10.6 106 8.9 10.4 86 DOME LAKE 8880 9.7 9.9 98 10.0 10.8 93 GRAVE SPRINGS 8550 4.2 7.7 55 4.9 8.2 60 HANSEN SAWMILL 8360 6.9 5.5 125 7.2 6.7 107 MIDDLE POWDER 7760 5.4 9.5 57 5.2 10.1 51 POWDER RIVER PASS 9480 9.3 9.1 102 10.2 10.5 97 SUCKER CREEK 8880 10.3 9.5 108 11.1 11.1 100 TIE CREEK 6870 5.5 5.3 104 9.1 8.3 110 ----- ----- Basin wide percent of average 95 91 BELLE FOURCHE BLIND PARK 6890 7.7 7.6 101 9.1 9.6 95 COLE CANYON 5910 5.0 -M * 5.9 -M * NORTH RAPID CREEK 6130 6.3 7.1 89 6.6 7.7 86 ----- ----- Basin wide percent of average 95 91 UPPER N. PLATTE RIVER COLUMBINE 9400 20.4 22.7 90 18.9 21.8 87 DIVIDE PEAK 8800 15.2 16.5 92 15.8 17.7 89 ELK RIVER 8700 15.5 16.8 92 16.1 16.8 96 JOE WRIGHT 10120 -M 18.0 * -M 21.1 * NORTH FRENCH CREEK 10100 24.2 23.9 101 23.5 21.1 111 OLD BATTLE 10000 22.9 27.5 83 26.9 29.7 91 SAGE CREEK BASIN 7850 9.1 9.6 95 10.9 10.3 106 SOUTH BRUSH CREEK 8400 11.8 10.7 110 13.8 13.9 99 TOWER 10500 37.2 39.1 95 29.7 33.2 89 WEBBER SPRINGS 9200 17.1 22.6 76 19.4 23.0 84 WILLOW CREEK PASS 9540 12.1 10.0 121 11.5 10.9 106 ----- ----- Basin wide percent of average 93 94 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 14.2 19.9 71 16.2 18.4 88 CASPER MTN. 7900 8.3 11.8 70 7.2 11.7 62 DEADMAN HILL 10220 8.3 13.6 61 10.9 14.0 78 DEER PARK 9700 10.4 14.8 70 12.6 18.6 68 LAPRELE CREEK 8320 -M 9.4 * 9.0 10.5 86 RENO HILL 8400 8.2 11.1 74 8.4 12.2 69 ROACH 9700 11.5 14.5 79 13.1 15.6 84 SAND LAKE 10080 18.5 26.7 69 18.8 20.2 93 SOUTH PASS 9040 10.4 14.6 71 10.8 15.7 69 WINDY PEAK 7840 6.1 6.5 94 6.8 8.9 76 ----- ----- Basin wide percent of average 72 78 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 13.1 10.3 127 13.7 13.0 105 DIVIDE PEAK 8800 15.2 16.5 92 15.8 17.7 89 OLD BATTLE 10000 22.9 27.5 83 26.9 29.7 91 SANDSTONE RS 8150 11.7 13.2 89 16.2 16.3 99 WHISKEY PARK 8950 23.8 25.3 94 23.4 24.4 96 ----- ----- Basin wide percent of average 93 95 UPPER GREEN RIVER BIG SANDY OPENING 9100 9.9 12.6 79 9.1 11.7 78 BLIND BULL SUM 8650 17.9 24.2 74 13.8 19.8 70 EAST RIM DIVIDE 7930 8.7 11.5 76 8.8 10.6 83 ELKHART PARK G.S. 9400 -M 11.6 * -M 11.4 * GROS VENTRE SUMMIT 8775 9.9 12.1 82 9.2 11.2 82 KENDALL R.S. 7740 11.1 13.0 85 10.7 12.9 83 LOOMIS PARK 8240 15.1 15.2 99 13.5 15.3 88 NEW FORK LAKE 8340 9.0 10.0 90 -M 9.9 * SNIDER BASIN 8250 11.4 12.9 88 11.2 14.2 79 SPRING CREEK DIVIDE 9000 21.5 23.1 93 19.9 23.3 85 TRIPLE PEAK 8500 20.0 21.8 92 21.7 21.6 100 ----- ----- Basin wide percent of average 86 84 LOWER GREEN RIVER HAMS FORK 7840 10.5 11.5 91 9.4 10.8 87 HEWINTA 9500 -M 9.7 * -M 12.2 * HICKERSON PARK 9150 4.0 6.1 66 6.1 6.5 94 HOLE-IN-ROCK 9150 5.7 6.0 95 6.7 6.1 110 INDIAN CREEK 9425 19.1 23.5 81 16.4 22.0 75 KELLEY R.S. 8180 11.8 14.7 80 12.6 17.9 70 STEEL CREEK PARK 10100 9.5 13.3 71 10.1 13.6 74 ----- ----- Basin wide percent of average 81 80 UPPER BEAR RIVER BUG LAKE 7950 13.5 18.0 75 13.0 16.8 77 HAYDEN FORK 9400 12.7 13.9 91 14.6 17.9 82 KELLEY R.S. 8180 11.8 14.7 80 12.6 17.9 70 LILY LAKE 9050 9.8 11.3 87 11.3 14.9 76 MONTE CRISTO 8960 13.9 25.9 54 17.0 22.0 77 SALT RIVER SUMMIT 7600 10.8 12.7 85 12.5 16.4 76 TRIAL LAKE 9960 11.3 21.6 52 13.2 21.4 62 ----- ----- Basin wide percent of average 71 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 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.