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 13 , 2003 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 19.4 17.1 113 20.0 19.8 101 COTTONWOOD CREEK 7600 21.0 21.0 100 22.0 24.9 88 GRANITE CREEK 6770 14.5 17.6 82 15.6 18.4 85 GRASSY LAKE 7265 28.2 32.3 87 28.5 33.1 86 GROS VENTRE SUMMIT 8775 10.9 12.7 86 10.1 11.7 86 LEWIS LAKE DIVIDE 7860 30.5 32.4 94 27.3 33.7 81 PHILLIPS BENCH 8200 -M 26.1 * -M 26.5 * SALT RIVER SUMMIT 7600 11.3 13.2 86 12.9 17.0 76 SNAKE RIVER STATION 6920 15.7 18.1 87 19.1 20.7 92 SPRING CREEK DIVIDE 9000 23.2 24.1 96 21.5 24.2 89 THUMB DIVIDE 7980 13.5 17.1 79 13.8 17.2 80 TOGWOTEE PASS 9580 21.8 22.4 97 21.9 22.3 98 TWO OCEAN PLATEAU 9360 27.6 25.3 109 22.2 25.2 88 WILLOW CREEK 8450 25.9 27.6 94 29.8 29.2 102 ----- ----- Basin wide percent of average 94 89 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 24.0 21.6 111 21.0 18.3 115 BLACK BEAR 8170 28.6 35.9 80 26.8 36.2 74 CANYON 8090 12.4 12.5 99 13.2 14.0 94 FISHER CREEK 9100 32.8 31.9 103 29.9 33.0 91 MADISON PLATEAU 7750 16.2 22.9 71 16.7 24.0 70 NORTHEAST ENTRANCE 7350 10.7 10.5 102 11.9 11.6 103 PARKER PEAK 9400 21.6 19.7 110 17.6 14.7 120 SYLVAN LAKE 8420 18.5 20.3 91 20.7 19.1 108 THUMB DIVIDE 7980 13.5 17.1 79 13.8 17.2 80 TWO OCEAN PLATEAU 9360 27.6 25.3 109 22.2 25.2 88 WHISKEY CREEK 6800 10.6 15.7 68 12.9 18.9 68 WHITE MILL 8700 24.3 22.0 110 20.9 24.5 85 WOLVERINE 7650 12.4 11.2 111 11.3 11.9 95 ----- ----- Basin wide percent of average 95 89 WIND RIVER BURROUGHS CREEK 8750 16.1 13.4 120 17.2 14.7 117 COLD SPRINGS 9630 7.9 7.9 100 9.2 9.3 99 DEER PARK 9700 11.7 15.2 77 14.2 19.5 73 HOBBS PARK 10100 11.1 12.9 86 10.0 11.1 90 LITTLE WARM 9370 9.1 10.4 87 10.1 11.9 85 SOUTH PASS 9040 11.6 15.2 76 11.9 16.4 73 ST. LAWRENCE ALT 8620 5.9 6.5 91 7.1 7.7 92 TOGWOTEE PASS 9580 21.8 22.4 97 21.9 22.3 98 TOWNSEND CREEK 8700 7.5 7.5 100 8.9 10.0 89 ----- ----- Basin wide percent of average 92 90 BIGHORN BASIN BALD MTN. 9380 17.1 17.4 98 15.5 15.4 101 BEAR TRAP MEADOW 8200 4.9 4.8 102 5.1 7.1 72 BLACKWATER 9780 22.6 22.1 102 19.5 18.6 105 BONE SPRINGS DIV 9350 14.3 14.2 101 13.3 12.8 104 EVENING STAR 9200 27.0 27.0 100 28.4 23.2 122 GRAVE SPRINGS 8550 4.3 8.1 53 5.0 8.5 59 KIRWIN 9550 9.6 10.0 96 10.3 10.0 103 MARQUETTE 8760 8.4 7.5 112 9.5 8.4 113 MIDDLE POWDER 7760 5.4 9.9 55 5.3 10.7 50 OWL CREEK 8975 6.1 4.6 133 5.5 5.0 110 POWDER RIVER PASS 9480 9.4 9.6 98 10.5 10.9 96 SHELL CREEK 9580 13.8 12.8 108 12.6 11.8 107 SYLVAN LAKE 8420 18.5 20.3 91 20.7 19.1 108 SYLVAN ROAD 7120 13.2 12.1 109 16.3 16.5 99 TIMBER CREEK 7950 4.6 4.8 96 5.6 6.2 90 YOUNTS PEAK 8350 15.9 15.5 103 15.4 14.6 105 ----- ----- Basin wide percent of average 97 100 SHOSHONE RIVER BLACKWATER 9780 22.6 22.1 102 19.5 18.6 105 EVENING STAR 9200 27.0 27.0 100 28.4 23.2 122 KIRWIN 9550 9.6 10.0 96 10.3 10.0 103 MARQUETTE 8760 8.4 7.5 112 9.5 8.4 113 SYLVAN LAKE 8420 18.5 20.3 91 20.7 19.1 108 SYLVAN ROAD 7120 13.2 12.1 109 16.3 16.5 99 YOUNTS PEAK 8350 15.9 15.5 103 15.4 14.6 105 ----- ----- Basin wide percent of average 101 109 POWDER-TONGUE BEAR TRAP MEADOW 8200 4.9 4.8 102 5.1 7.1 72 BIG GOOSE 7990 8.2 8.6 95 9.0 7.5 120 BONE SPRINGS DIV 9350 14.3 14.2 101 13.3 12.8 104 BURGESS JUNCTION 7880 9.6 9.9 97 9.9 10.5 94 CLOUD PEAK RESERVOIR 9860 11.9 11.2 106 9.6 11.0 87 DOME LAKE 8880 10.4 10.4 100 10.7 11.4 94 GRAVE SPRINGS 8550 4.3 8.1 53 5.0 8.5 59 HANSEN SAWMILL 8360 7.0 5.7 123 7.5 7.0 107 MIDDLE POWDER 7760 5.4 9.9 55 5.3 10.7 50 POWDER RIVER PASS 9480 9.4 9.6 98 10.5 10.9 96 SUCKER CREEK 8880 10.6 10.0 106 11.7 11.7 100 TIE CREEK 6870 6.0 5.7 105 9.5 8.7 109 ----- ----- Basin wide percent of average 94 91 BELLE FOURCHE BLIND PARK 6890 7.8 8.1 96 9.3 10.0 93 COLE CANYON 5910 5.3 -M * 6.1 -M * NORTH RAPID CREEK 6130 6.3 7.4 85 6.8 7.9 86 ----- ----- Basin wide percent of average 91 90 UPPER N. PLATTE RIVER COLUMBINE 9400 21.0 23.5 89 21.1 22.6 93 DIVIDE PEAK 8800 15.5 17.4 89 16.1 18.5 87 ELK RIVER 8700 15.8 17.5 90 16.1 17.5 92 JOE WRIGHT 10120 17.2 18.8 91 21.3 22.0 97 NORTH FRENCH CREEK 10100 24.5 25.1 98 24.7 22.0 112 OLD BATTLE 10000 23.1 28.8 80 27.7 30.9 90 SAGE CREEK BASIN 7850 9.0 10.1 89 10.9 10.8 101 SOUTH BRUSH CREEK 8400 11.9 11.4 104 14.1 14.5 97 TOWER 10500 37.2 40.7 91 32.1 34.5 93 WEBBER SPRINGS 9200 17.5 23.9 73 19.8 23.9 83 WILLOW CREEK PASS 9540 12.2 10.5 116 11.7 11.4 103 ----- ----- Basin wide percent of average 90 94 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 14.7 20.7 71 16.6 19.3 86 CASPER MTN. 7900 8.5 12.3 69 7.4 12.4 60 DEADMAN HILL 10220 8.5 14.2 60 11.2 14.7 76 DEER PARK 9700 11.7 15.2 77 14.2 19.5 73 LAPRELE CREEK 8320 5.9 9.8 60 7.0 11.0 64 RENO HILL 8400 8.1 11.8 69 8.5 12.9 66 ROACH 9700 11.6 15.1 77 13.3 16.4 81 SAND LAKE 10080 18.7 28.2 66 19.1 21.2 90 SOUTH PASS 9040 11.6 15.2 76 11.9 16.4 73 WINDY PEAK 7840 6.0 7.0 86 6.7 9.3 72 ----- ----- Basin wide percent of average 70 76 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 12.5 11.0 114 13.6 13.7 99 DIVIDE PEAK 8800 15.5 17.4 89 16.1 18.5 87 OLD BATTLE 10000 23.1 28.8 80 27.7 30.9 90 SANDSTONE RS 8150 11.9 14.0 85 16.2 16.9 96 WHISKEY PARK 8950 24.1 26.8 90 23.5 25.5 92 ----- ----- Basin wide percent of average 89 92 UPPER GREEN RIVER BIG SANDY OPENING 9100 10.6 13.1 81 9.8 12.2 80 BLIND BULL SUM 8650 20.1 25.3 79 15.3 20.4 75 EAST RIM DIVIDE 7930 9.4 11.9 79 9.4 11.0 85 ELKHART PARK G.S. 9400 -M 12.1 * -M 11.9 * GROS VENTRE SUMMIT 8775 10.9 12.7 86 10.1 11.7 86 KENDALL R.S. 7740 12.4 13.7 91 12.2 13.4 91 LOOMIS PARK 8240 16.3 16.0 102 14.4 15.9 91 NEW FORK LAKE 8340 9.7 10.4 93 -M 10.3 * SNIDER BASIN 8250 12.3 13.4 92 12.0 14.7 82 SPRING CREEK DIVIDE 9000 23.2 24.1 96 21.5 24.2 89 TRIPLE PEAK 8500 22.2 22.8 97 23.8 22.4 106 ----- ----- Basin wide percent of average 90 88 LOWER GREEN RIVER HAMS FORK 7840 10.6 12.0 88 9.5 11.1 86 HEWINTA 9500 7.6 10.2 75 9.5 12.8 74 HICKERSON PARK 9150 3.7 6.4 58 6.3 6.9 91 HOLE-IN-ROCK 9150 5.9 6.3 94 6.7 6.5 103 INDIAN CREEK 9425 20.4 24.7 83 17.5 22.9 76 KELLEY R.S. 8180 12.3 15.4 80 13.1 18.5 71 STEEL CREEK PARK 10100 9.6 14.0 69 10.3 14.2 73 ----- ----- Basin wide percent of average 79 78 UPPER BEAR RIVER BUG LAKE 7950 13.8 18.8 73 13.4 17.5 77 HAYDEN FORK 9400 12.6 14.7 86 14.9 18.7 80 KELLEY R.S. 8180 12.3 15.4 80 13.1 18.5 71 LILY LAKE 9050 9.9 11.7 85 11.4 15.6 73 MONTE CRISTO 8960 14.0 27.2 51 17.8 22.9 78 SALT RIVER SUMMIT 7600 11.3 13.2 86 12.9 17.0 76 TRIAL LAKE 9960 11.5 22.7 51 13.3 22.3 60 ----- ----- Basin wide percent of average 69 73 ----------------------------------------------------------------------------- -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.