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 SUNDAY: MARCH 23 , 2008 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 15.6 17.9 87 25.1 20.8 121 COTTONWOOD CREEK 7670 23.1 23.0 100 23.7 26.4 90 GRAND TARGHEE 9260 47.0 -M * 33.0 -M * GRANITE CREEK 6770 17.1 18.5 92 22.1 19.5 113 GRASSY LAKE 7265 33.5 34.5 97 -M 34.9 * GROS VENTRE SUMMIT 8750 11.9 13.7 87 13.3 12.4 107 GUNSIGHT PASS 9820 11.2 -M * 13.2 -M * LEWIS LAKE DIVIDE 7850 32.5 34.4 94 35.4 35.7 99 PHILLIPS BENCH 8200 31.1 27.9 111 33.1 28.1 118 SALT RIVER SUMMIT 7760 12.8 14.0 91 14.8 18.0 82 SNAKE RIVER STATION 6920 18.6 18.9 98 26.1 21.7 120 SPRING CREEK DIVIDE 9000 21.6 25.6 84 22.4 25.5 88 THUMB DIVIDE 7980 16.5 18.5 89 18.9 18.3 103 TOGWOTEE PASS 9580 25.5 23.9 107 27.8 23.6 118 TWO OCEAN PLATEAU 9240 -M 26.9 * -M 26.8 * WILLOW CREEK 8380 30.4 29.3 104 35.9 31.0 116 ----- ----- Basin wide percent of average 97 106 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 24.2 22.7 107 23.1 19.4 119 BLACK BEAR 8170 43.4 38.0 114 -M 38.9 * CANYON 7870 16.3 13.3 123 19.6 14.9 132 FISHER CREEK 9100 39.0 33.6 116 -M 35.1 * MADISON PLATEAU 7750 28.1 24.1 117 30.5 25.6 119 NORTHEAST ENTRANCE 7350 -M 11.0 * -M 12.2 * PARKER PEAK 9400 24.7 20.8 119 -M 15.6 * SYLVAN LAKE 8420 20.0 21.7 92 24.7 20.2 122 THUMB DIVIDE 7980 16.5 18.5 89 18.9 18.3 103 TWO OCEAN PLATEAU 9240 -M 26.9 * -M 26.8 * WHISKEY CREEK 6800 17.7 16.5 107 24.0 20.2 119 WHITE MILL 8700 26.1 23.3 112 24.6 26.1 94 WOLVERINE 7650 10.7 11.5 93 13.0 12.4 105 ----- ----- Basin wide percent of average 109 114 WIND RIVER BURROUGHS CREEK 8750 14.9 14.2 105 17.7 15.6 113 COLD SPRINGS 9630 6.1 8.5 72 9.2 9.9 93 DEER PARK 9700 14.7 16.3 90 19.3 20.8 93 HOBBS PARK 10100 13.1 13.9 94 13.8 11.9 116 LITTLE WARM 9370 9.0 11.2 80 12.5 12.6 99 SOUTH PASS 9040 13.6 16.1 84 16.7 17.5 95 ST. LAWRENCE ALT 8620 6.6 6.9 96 8.1 8.2 99 TOGWOTEE PASS 9580 25.5 23.9 107 27.8 23.6 118 TOWNSEND CREEK 8700 8.4 8.1 104 12.0 10.7 112 ----- ----- Basin wide percent of average 94 105 BIGHORN BASIN BALD MTN. 9380 16.0 18.6 86 14.5 16.4 88 BEAR TRAP MEADOW 8200 8.6 5.2 165 8.8 7.6 116 BLACKWATER 9780 23.3 23.5 99 21.6 19.6 110 BONE SPRINGS DIV 9350 16.4 15.3 107 16.7 13.7 122 EVENING STAR 9200 28.5 28.6 100 30.0 24.4 123 GRAVE SPRINGS 8550 9.5 8.8 108 10.2 9.1 112 KIRWIN 9550 11.3 10.7 106 13.6 10.6 128 MARQUETTE 8760 5.4 8.2 66 8.8 8.9 99 MIDDLE POWDER 7760 11.2 11.0 102 9.1 11.5 79 OWL CREEK 8975 5.2 5.2 100 6.4 5.3 121 POWDER RIVER PASS 9480 11.8 10.3 115 13.9 11.6 120 SHELL CREEK 9580 15.4 13.9 111 14.9 12.5 119 SYLVAN LAKE 8420 20.0 21.7 92 24.7 20.2 122 SYLVAN ROAD 7120 11.4 12.5 91 20.0 17.1 117 TIMBER CREEK 7950 3.8 5.3 72 7.6 6.7 113 YOUNTS PEAK 8350 16.0 16.5 97 16.2 15.5 105 ----- ----- Basin wide percent of average 99 112 SHOSHONE RIVER BLACKWATER 9780 23.3 23.5 99 21.6 19.6 110 EVENING STAR 9200 28.5 28.6 100 30.0 24.4 123 KIRWIN 9550 11.3 10.7 106 13.6 10.6 128 MARQUETTE 8760 5.4 8.2 66 8.8 8.9 99 SYLVAN LAKE 8420 20.0 21.7 92 24.7 20.2 122 SYLVAN ROAD 7120 11.4 12.5 91 20.0 17.1 117 YOUNTS PEAK 8350 16.0 16.5 97 16.2 15.5 105 ----- ----- Basin wide percent of average 95 116 POWDER-TONGUE BEAR TRAP MEADOW 8200 8.6 5.2 165 8.8 7.6 116 BIG GOOSE 7990 8.3 9.5 87 11.1 7.9 141 BONE SPRINGS DIV 9350 16.4 15.3 107 16.7 13.7 122 BURGESS JUNCTION 7880 11.6 10.8 107 13.0 11.3 115 CLOUD PEAK RESERVOIR 9860 14.8 12.4 119 14.3 11.8 121 DOME LAKE 8880 10.8 11.5 94 14.2 12.1 117 GRAVE SPRINGS 8550 9.5 8.8 108 10.2 9.1 112 HANSEN SAWMILL 8360 6.7 6.3 106 8.9 7.6 117 MIDDLE POWDER 7760 11.2 11.0 102 9.1 11.5 79 POWDER RIVER PASS 9480 11.8 10.3 115 13.9 11.6 120 SUCKER CREEK 8880 13.7 11.0 125 15.4 12.6 122 TIE CREEK 6870 7.1 5.9 120 11.2 9.2 122 ----- ----- Basin wide percent of average 111 117 BELLE FOURCHE BLIND PARK 6890 7.1 8.7 82 9.9 10.6 93 COLE CANYON 5910 5.5 6.6 83 7.0 6.3 111 NORTH RAPID CREEK 6130 7.8 7.9 99 7.9 8.2 96 ----- ----- Basin wide percent of average 88 99 UPPER N. PLATTE RIVER COLUMBINE 9160 26.0 24.5 106 26.5 24.1 110 DIVIDE PEAK 8880 21.3 18.9 113 21.7 19.8 110 ELK RIVER 8700 25.0 18.6 134 22.0 18.7 118 JOE WRIGHT 10120 21.6 20.1 107 25.3 23.5 108 NORTH FRENCH CREEK 10130 28.7 27.4 105 27.7 23.5 118 OLD BATTLE 10000 31.1 30.8 101 33.5 33.1 101 SAGE CREEK BASIN 7850 16.6 11.0 151 16.8 11.5 146 SOUTH BRUSH CREEK 8440 12.9 12.5 103 15.8 15.4 103 TOWER 10500 40.5 43.4 93 30.9 36.7 84 WEBBER SPRINGS 9250 24.5 25.6 96 28.1 25.5 110 WILLOW CREEK PASS 9540 14.5 11.3 128 14.5 12.1 120 ----- ----- Basin wide percent of average 108 108 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 20.0 22.3 90 20.7 20.8 100 CASPER MTN. 7900 12.5 13.4 93 13.4 13.3 101 DEADMAN HILL 10220 15.9 15.3 104 16.4 15.9 103 DEER PARK 9700 14.7 16.3 90 19.3 20.8 93 LAPRELE CREEK 8375 7.1 10.6 67 9.8 11.8 83 RENO HILL 8400 12.5 13.0 96 14.2 13.8 103 ROACH 9700 17.9 16.1 111 20.4 17.7 115 SAND LAKE 10050 25.8 30.7 84 25.6 22.7 113 SOUTH PASS 9040 13.6 16.1 84 16.7 17.5 95 WINDY PEAK 7900 7.5 7.7 97 8.9 9.9 90 ----- ----- Basin wide percent of average 91 101 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 16.7 11.5 145 15.5 14.9 104 DIVIDE PEAK 8880 21.3 18.9 113 21.7 19.8 110 OLD BATTLE 10000 31.1 30.8 101 33.5 33.1 101 SANDSTONE RS 8150 16.7 14.9 112 20.1 18.0 112 WHISKEY PARK 8950 29.4 29.1 101 30.9 27.3 113 ----- ----- Basin wide percent of average 110 108 UPPER GREEN RIVER BIG SANDY OPENING 9080 12.3 14.0 88 12.2 12.9 95 BLIND BULL SUM 8650 23.6 27.1 87 17.2 21.5 80 EAST RIM DIVIDE 7930 8.3 12.7 65 10.4 11.7 89 ELKHART PARK G.S. 9400 10.4 12.9 81 11.1 12.7 87 GROS VENTRE SUMMIT 8750 11.9 13.7 87 13.3 12.4 107 GUNSIGHT PASS 9820 11.2 -M * 13.2 -M * KENDALL R.S. 7740 11.4 14.5 79 13.1 14.2 92 LOOMIS PARK 8240 15.0 17.0 88 16.6 16.8 99 NEW FORK LAKE 8340 9.0 10.9 83 8.8 10.9 81 SNIDER BASIN 8060 12.8 14.2 90 13.6 15.5 88 SPRING CREEK DIVIDE 9000 21.6 25.6 84 22.4 25.5 88 TRIPLE PEAK 8500 23.4 24.2 97 26.5 23.9 111 ----- ----- Basin wide percent of average 85 93 LOWER GREEN RIVER HAMS FORK 7840 11.4 12.4 92 9.6 11.8 81 HEWINTA 9519 14.9 11.2 133 16.3 13.7 119 HICKERSON PARK 9145 7.5 7.0 107 9.6 7.4 130 HOLE-IN-ROCK 9150 6.9 6.7 103 10.1 6.9 146 INDIAN CREEK 9425 23.3 26.7 87 -M 24.3 * KELLEY R.S. 8180 14.0 16.4 85 16.7 19.5 86 STEEL CREEK PARK 10200 15.1 15.0 101 18.2 15.2 120 ----- ----- Basin wide percent of average 98 108 UPPER BEAR RIVER BUG LAKE 7950 17.5 20.2 87 16.6 18.5 90 HAYDEN FORK 9212 20.0 15.8 127 22.4 20.0 112 KELLEY R.S. 8180 14.0 16.4 85 16.7 19.5 86 LILY LAKE 9156 14.7 12.5 118 17.1 16.6 103 MONTE CRISTO 8960 27.6 29.0 95 25.7 24.4 105 SALT RIVER SUMMIT 7760 12.8 14.0 91 14.8 18.0 82 TRIAL LAKE 9992 21.2 24.2 88 23.6 23.9 99 ----- ----- Basin wide percent of average 97 97 ----------------------------------------------------------------------------- -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.