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: FEBRUARY 22 , 2003 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 15.4 15.2 101 16.0 17.7 90 COTTONWOOD CREEK 7600 16.8 17.2 98 18.1 21.9 83 GRANITE CREEK 6770 11.1 15.2 73 12.7 16.5 77 GRASSY LAKE 7265 24.3 27.9 87 25.1 29.5 85 GROS VENTRE SUMMIT 8775 8.1 10.9 74 7.6 10.3 74 LEWIS LAKE DIVIDE 7860 25.9 28.0 92 23.7 29.9 79 PHILLIPS BENCH 8200 17.2 22.5 76 17.2 23.3 74 SALT RIVER SUMMIT 7600 8.6 11.5 75 10.4 15.0 69 SNAKE RIVER STATION 6920 13.2 15.6 85 16.7 18.5 90 SPRING CREEK DIVIDE 9000 17.5 20.9 84 16.6 21.4 78 THUMB DIVIDE 7980 11.2 14.4 78 11.9 15.2 78 TOGWOTEE PASS 9580 16.8 19.8 85 16.9 19.7 86 TWO OCEAN PLATEAU 9360 21.7 22.2 98 17.5 22.2 79 WILLOW CREEK 8450 20.6 24.0 86 24.7 25.7 96 ----- ----- Basin wide percent of average 86 82 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 19.5 18.9 103 16.7 16.3 102 BLACK BEAR 8170 -M 31.0 * -M 31.5 * CANYON 8090 9.9 10.7 93 10.5 12.4 85 FISHER CREEK 9100 26.0 28.1 93 -M 29.1 * MADISON PLATEAU 7750 14.0 19.7 71 14.5 21.0 69 NORTHEAST ENTRANCE 7350 8.3 9.2 90 10.0 10.3 97 PARKER PEAK 9400 17.1 17.3 99 14.6 13.0 112 SYLVAN LAKE 8420 16.0 17.8 90 18.0 17.1 105 THUMB DIVIDE 7980 11.2 14.4 78 11.9 15.2 78 TWO OCEAN PLATEAU 9360 21.7 22.2 98 17.5 22.2 79 WHISKEY CREEK 6800 9.6 13.6 71 11.4 16.5 69 WHITE MILL 8700 19.8 19.2 103 17.3 21.6 80 WOLVERINE 7650 9.7 10.1 96 9.2 10.7 86 ----- ----- Basin wide percent of average 91 86 WIND RIVER BURROUGHS CREEK 8750 12.7 11.9 107 13.5 13.1 103 COLD SPRINGS 9630 6.2 6.8 91 7.3 8.1 90 DEER PARK 9700 8.3 14.1 59 10.1 17.0 59 HOBBS PARK 10100 8.8 11.3 78 8.2 9.5 86 LITTLE WARM 9370 7.3 9.0 81 8.0 10.4 77 SOUTH PASS 9040 8.2 13.2 62 8.8 14.3 62 ST. LAWRENCE ALT 8620 5.3 5.6 95 6.2 6.7 93 TOGWOTEE PASS 9580 16.8 19.8 85 16.9 19.7 86 TOWNSEND CREEK 8700 6.2 6.6 94 7.7 8.5 91 ----- ----- Basin wide percent of average 81 81 BIGHORN BASIN BALD MTN. 9380 14.1 15.2 93 12.6 13.5 93 BEAR TRAP MEADOW 8200 3.9 4.1 95 3.9 6.2 63 BLACKWATER 9780 16.3 19.4 84 14.5 16.4 88 BONE SPRINGS DIV 9350 11.4 12.4 92 10.2 11.1 92 EVENING STAR 9200 21.3 23.6 90 21.7 20.8 104 GRAVE SPRINGS 8550 3.8 6.9 55 4.5 7.5 60 KIRWIN 9550 7.4 8.7 85 7.8 8.8 89 MARQUETTE 8760 7.1 6.6 108 8.0 7.2 111 MIDDLE POWDER 7760 4.9 8.6 57 4.6 9.3 49 OWL CREEK 8975 5.2 3.9 133 4.5 4.2 107 POWDER RIVER PASS 9480 7.8 8.3 94 8.7 9.6 91 SHELL CREEK 9580 11.4 11.2 102 10.4 10.4 100 SYLVAN LAKE 8420 16.0 17.8 90 18.0 17.1 105 SYLVAN ROAD 7120 10.7 10.8 99 13.2 15.0 88 TIMBER CREEK 7950 3.8 4.0 95 4.9 5.2 94 YOUNTS PEAK 8350 10.7 13.9 77 10.6 13.1 81 ----- ----- Basin wide percent of average 89 90 SHOSHONE RIVER BLACKWATER 9780 16.3 19.4 84 14.5 16.4 88 EVENING STAR 9200 21.3 23.6 90 21.7 20.8 104 KIRWIN 9550 7.4 8.7 85 7.8 8.8 89 MARQUETTE 8760 7.1 6.6 108 8.0 7.2 111 SYLVAN LAKE 8420 16.0 17.8 90 18.0 17.1 105 SYLVAN ROAD 7120 10.7 10.8 99 13.2 15.0 88 YOUNTS PEAK 8350 10.7 13.9 77 10.6 13.1 81 ----- ----- Basin wide percent of average 89 95 POWDER-TONGUE BEAR TRAP MEADOW 8200 3.9 4.1 95 3.9 6.2 63 BIG GOOSE 7990 6.9 7.2 96 7.6 6.5 117 BONE SPRINGS DIV 9350 11.4 12.4 92 10.2 11.1 92 BURGESS JUNCTION 7880 7.9 8.6 92 8.1 9.1 89 CLOUD PEAK RESERVOIR 9860 10.1 9.4 107 7.9 9.4 84 DOME LAKE 8880 8.4 9.1 92 8.7 9.8 89 GRAVE SPRINGS 8550 3.8 6.9 55 4.5 7.5 60 HANSEN SAWMILL 8360 5.8 4.9 118 6.1 6.0 102 MIDDLE POWDER 7760 4.9 8.6 57 4.6 9.3 49 POWDER RIVER PASS 9480 7.8 8.3 94 8.7 9.6 91 SUCKER CREEK 8880 9.0 8.6 105 9.7 10.1 96 TIE CREEK 6870 4.9 4.7 104 7.7 7.6 101 ----- ----- Basin wide percent of average 91 86 BELLE FOURCHE BLIND PARK 6890 6.7 6.5 103 8.1 8.9 91 COLE CANYON 5910 4.7 -M * 5.2 -M * NORTH RAPID CREEK 6130 5.8 6.3 92 6.0 7.2 83 ----- ----- Basin wide percent of average 98 88 UPPER N. PLATTE RIVER COLUMBINE 9400 16.3 20.6 79 17.1 19.8 86 DIVIDE PEAK 8800 12.0 14.8 81 13.2 16.2 81 ELK RIVER 8700 12.3 15.2 81 13.4 15.2 88 JOE WRIGHT 10120 13.6 16.4 83 17.2 19.2 90 NORTH FRENCH CREEK 10100 20.7 21.5 96 20.6 19.2 107 OLD BATTLE 10000 18.0 24.6 73 22.0 27.0 81 SAGE CREEK BASIN 7850 7.4 8.6 86 9.4 9.4 100 SOUTH BRUSH CREEK 8400 10.1 9.3 109 12.2 12.7 96 TOWER 10500 30.0 35.7 84 28.5 30.3 94 WEBBER SPRINGS 9200 13.3 19.9 67 15.4 21.1 73 WILLOW CREEK PASS 9540 9.2 9.1 101 8.9 9.9 90 ----- ----- Basin wide percent of average 83 89 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 11.1 18.1 61 12.5 16.7 75 CASPER MTN. 7900 7.5 10.7 70 6.5 10.6 61 DEADMAN HILL 10220 5.9 12.3 48 8.2 12.6 65 DEER PARK 9700 8.3 14.1 59 10.1 17.0 59 LAPRELE CREEK 8320 5.1 8.4 61 6.0 9.5 63 RENO HILL 8400 7.2 9.9 73 7.4 10.9 68 ROACH 9700 9.0 13.2 68 10.4 14.1 74 SAND LAKE 10080 15.0 23.7 63 15.5 18.4 84 SOUTH PASS 9040 8.2 13.2 62 8.8 14.3 62 WINDY PEAK 7840 4.9 5.7 86 5.7 8.1 70 ----- ----- Basin wide percent of average 64 69 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 10.4 9.2 113 11.7 11.7 100 DIVIDE PEAK 8800 12.0 14.8 81 13.2 16.2 81 OLD BATTLE 10000 18.0 24.6 73 22.0 27.0 81 SANDSTONE RS 8150 8.9 11.8 75 13.7 14.9 92 WHISKEY PARK 8950 19.0 22.5 84 19.7 22.4 88 ----- ----- Basin wide percent of average 82 87 UPPER GREEN RIVER BIG SANDY OPENING 9100 7.8 11.4 68 7.2 10.7 67 BLIND BULL SUM 8650 15.3 21.9 70 12.1 18.2 66 EAST RIM DIVIDE 7930 7.3 10.3 71 7.5 9.7 77 ELKHART PARK G.S. 9400 -M 10.5 * -M 10.4 * GROS VENTRE SUMMIT 8775 8.1 10.9 74 7.6 10.3 74 KENDALL R.S. 7740 8.6 11.7 74 8.4 11.8 71 LOOMIS PARK 8240 12.4 13.6 91 11.4 14.1 81 NEW FORK LAKE 8340 7.5 9.1 82 -M 9.2 * SNIDER BASIN 8250 8.6 11.8 73 8.7 13.0 67 SPRING CREEK DIVIDE 9000 17.5 20.9 84 16.6 21.4 78 TRIPLE PEAK 8500 16.0 19.8 81 17.6 19.6 90 ----- ----- Basin wide percent of average 77 75 LOWER GREEN RIVER HAMS FORK 7840 8.4 10.3 82 8.3 9.9 84 HEWINTA 9500 5.8 8.4 69 7.9 11.0 72 HICKERSON PARK 9150 3.3 5.4 61 5.7 6.0 95 HOLE-IN-ROCK 9150 4.9 5.3 92 6.0 5.5 109 INDIAN CREEK 9425 15.1 21.0 72 13.4 20.0 67 KELLEY R.S. 8180 9.6 13.1 73 10.6 16.4 65 STEEL CREEK PARK 10100 7.7 11.8 65 8.2 12.2 67 ----- ----- Basin wide percent of average 73 74 UPPER BEAR RIVER BUG LAKE 7950 10.8 16.1 67 11.0 15.4 71 HAYDEN FORK 9400 10.4 12.3 85 12.6 16.2 78 KELLEY R.S. 8180 9.6 13.1 73 10.6 16.4 65 LILY LAKE 9050 8.2 10.2 80 9.9 13.6 73 MONTE CRISTO 8960 11.5 23.0 50 14.5 20.0 72 SALT RIVER SUMMIT 7600 8.6 11.5 75 10.4 15.0 69 TRIAL LAKE 9960 9.0 19.3 47 11.2 19.3 58 ----- ----- Basin wide percent of average 65 69 ----------------------------------------------------------------------------- -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.