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 , 2008 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 15.2 17.2 88 22.6 19.9 114 COTTONWOOD CREEK 7670 20.9 21.0 100 21.9 24.8 88 GRAND TARGHEE 9260 41.8 -M * 29.2 -M * GRANITE CREEK 6770 15.2 17.7 86 20.4 18.6 110 GRASSY LAKE 7265 27.9 32.3 86 35.3 33.2 106 GROS VENTRE SUMMIT 8750 11.5 12.7 91 12.6 11.7 108 GUNSIGHT PASS 9820 10.7 -M * 12.4 -M * LEWIS LAKE DIVIDE 7850 27.4 32.4 85 31.7 33.9 94 PHILLIPS BENCH 8200 27.3 26.2 104 30.0 26.6 113 SALT RIVER SUMMIT 7760 11.8 13.2 89 13.7 17.0 81 SNAKE RIVER STATION 6920 15.5 18.1 86 23.2 20.7 112 SPRING CREEK DIVIDE 9000 19.3 24.1 80 20.0 24.1 83 THUMB DIVIDE 7980 14.6 17.2 85 17.1 17.3 99 TOGWOTEE PASS 9580 23.5 22.5 104 25.7 22.3 115 TWO OCEAN PLATEAU 9240 31.2 25.2 124 23.4 25.3 92 WILLOW CREEK 8380 27.5 27.6 100 33.1 29.2 113 ----- ----- Basin wide percent of average 94 102 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 22.3 21.6 103 21.0 18.4 114 BLACK BEAR 8170 40.4 36.0 112 35.9 36.4 99 CANYON 7870 14.9 12.5 119 18.4 14.0 131 FISHER CREEK 9100 36.9 32.0 115 33.3 33.1 101 MADISON PLATEAU 7750 26.3 22.9 115 28.9 24.0 120 NORTHEAST ENTRANCE 7350 8.3 10.5 79 11.7 11.6 101 PARKER PEAK 9400 22.5 19.7 114 20.6 14.7 140 SYLVAN LAKE 8420 18.4 20.4 90 22.9 19.1 120 THUMB DIVIDE 7980 14.6 17.2 85 17.1 17.3 99 TWO OCEAN PLATEAU 9240 31.2 25.2 124 23.4 25.3 92 WHISKEY CREEK 6800 16.5 15.8 104 22.8 18.9 121 WHITE MILL 8700 23.8 22.1 108 23.8 24.5 97 WOLVERINE 7650 9.0 11.3 80 11.5 11.9 97 ----- ----- Basin wide percent of average 107 108 WIND RIVER BURROUGHS CREEK 8750 13.4 13.5 99 16.3 14.8 110 COLD SPRINGS 9630 5.7 8.0 71 8.7 9.1 96 DEER PARK 9700 13.1 15.4 85 17.5 19.6 89 HOBBS PARK 10100 11.8 13.0 91 12.2 10.8 113 LITTLE WARM 9370 8.3 10.5 79 11.7 11.8 99 SOUTH PASS 9040 12.5 15.3 82 15.3 16.2 94 ST. LAWRENCE ALT 8620 6.2 6.5 95 7.6 7.6 100 TOGWOTEE PASS 9580 23.5 22.5 104 25.7 22.3 115 TOWNSEND CREEK 8700 7.7 7.6 101 10.9 9.7 112 ----- ----- Basin wide percent of average 91 103 BIGHORN BASIN BALD MTN. 9380 14.7 17.4 84 13.7 15.3 90 BEAR TRAP MEADOW 8200 7.5 4.9 153 7.7 7.0 110 BLACKWATER 9780 21.2 22.2 95 19.9 18.5 108 BONE SPRINGS DIV 9350 14.8 14.2 104 15.4 12.7 121 EVENING STAR 9200 25.6 27.0 95 29.0 23.2 125 GRAVE SPRINGS 8550 8.4 8.2 102 9.1 8.6 106 KIRWIN 9550 10.3 10.0 103 12.7 9.9 128 MARQUETTE 8760 4.7 7.5 63 8.2 8.2 100 MIDDLE POWDER 7760 9.9 10.0 99 8.1 10.5 77 OWL CREEK 8975 4.8 4.6 104 5.8 4.8 121 POWDER RIVER PASS 9480 10.7 9.6 111 12.7 10.8 118 SHELL CREEK 9580 13.8 12.8 108 13.4 11.6 116 SYLVAN LAKE 8420 18.4 20.4 90 22.9 19.1 120 SYLVAN ROAD 7120 10.0 12.0 83 18.7 16.4 114 TIMBER CREEK 7950 3.5 4.8 73 6.9 6.0 115 YOUNTS PEAK 8350 14.7 15.6 94 15.8 14.6 108 ----- ----- Basin wide percent of average 96 112 SHOSHONE RIVER BLACKWATER 9780 21.2 22.2 95 19.9 18.5 108 EVENING STAR 9200 25.6 27.0 95 29.0 23.2 125 KIRWIN 9550 10.3 10.0 103 12.7 9.9 128 MARQUETTE 8760 4.7 7.5 63 8.2 8.2 100 SYLVAN LAKE 8420 18.4 20.4 90 22.9 19.1 120 SYLVAN ROAD 7120 10.0 12.0 83 18.7 16.4 114 YOUNTS PEAK 8350 14.7 15.6 94 15.8 14.6 108 ----- ----- Basin wide percent of average 91 116 POWDER-TONGUE BEAR TRAP MEADOW 8200 7.5 4.9 153 7.7 7.0 110 BIG GOOSE 7990 7.2 8.5 85 10.2 7.3 140 BONE SPRINGS DIV 9350 14.8 14.2 104 15.4 12.7 121 BURGESS JUNCTION 7880 10.6 9.9 107 12.2 10.4 117 CLOUD PEAK RESERVOIR 9860 13.5 11.3 119 13.4 10.8 124 DOME LAKE 8880 9.2 10.4 88 12.6 11.1 114 GRAVE SPRINGS 8550 8.4 8.2 102 9.1 8.6 106 HANSEN SAWMILL 8360 5.4 5.7 95 7.6 6.9 110 MIDDLE POWDER 7760 9.9 10.0 99 8.1 10.5 77 POWDER RIVER PASS 9480 10.7 9.6 111 12.7 10.8 118 SUCKER CREEK 8880 12.2 10.1 121 14.3 11.5 124 TIE CREEK 6870 6.5 5.7 114 10.5 8.5 124 ----- ----- Basin wide percent of average 107 115 BELLE FOURCHE BLIND PARK 6890 6.8 8.3 82 9.6 10.0 96 COLE CANYON 5910 5.6 6.2 90 6.7 5.9 114 NORTH RAPID CREEK 6130 7.7 7.4 104 7.8 7.9 99 ----- ----- Basin wide percent of average 92 101 UPPER N. PLATTE RIVER COLUMBINE 9160 24.4 23.6 103 25.4 22.7 112 DIVIDE PEAK 8880 20.8 17.3 120 21.2 18.5 115 ELK RIVER 8700 23.2 17.5 133 21.4 17.5 122 JOE WRIGHT 10120 20.7 18.8 110 24.3 21.9 111 NORTH FRENCH CREEK 10130 27.4 25.1 109 26.6 22.0 121 OLD BATTLE 10000 29.2 28.8 101 33.5 31.0 108 SAGE CREEK BASIN 7850 16.4 10.0 164 16.6 10.8 154 SOUTH BRUSH CREEK 8440 12.5 11.4 110 15.8 14.4 110 TOWER 10500 38.4 40.7 94 -M 34.6 * WEBBER SPRINGS 9250 23.1 23.9 97 26.8 23.9 112 WILLOW CREEK PASS 9540 13.9 10.5 132 14.0 11.3 124 ----- ----- Basin wide percent of average 110 116 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 18.3 20.7 88 19.1 19.2 99 CASPER MTN. 7900 11.7 12.3 95 12.6 12.2 103 DEADMAN HILL 10220 15.2 14.2 107 15.8 14.7 107 DEER PARK 9700 13.1 15.4 85 17.5 19.6 89 LAPRELE CREEK 8375 6.6 9.8 67 9.3 11.0 85 RENO HILL 8400 11.8 11.7 101 13.6 12.6 108 ROACH 9700 17.1 15.1 113 19.6 16.4 120 SAND LAKE 10050 24.4 28.2 87 24.3 21.1 115 SOUTH PASS 9040 12.5 15.3 82 15.3 16.2 94 WINDY PEAK 7900 7.0 7.0 100 8.5 9.2 92 ----- ----- Basin wide percent of average 92 102 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 15.5 11.0 141 15.3 13.7 112 DIVIDE PEAK 8880 20.8 17.3 120 21.2 18.5 115 OLD BATTLE 10000 29.2 28.8 101 33.5 31.0 108 SANDSTONE RS 8150 16.0 14.0 114 19.5 17.0 115 WHISKEY PARK 8950 30.0 26.8 112 30.9 25.5 121 ----- ----- Basin wide percent of average 114 114 UPPER GREEN RIVER BIG SANDY OPENING 9080 11.3 13.1 86 11.4 12.2 93 BLIND BULL SUM 8650 21.4 25.3 85 15.8 20.3 78 EAST RIM DIVIDE 7930 7.5 12.0 62 9.7 11.0 88 ELKHART PARK G.S. 9400 9.6 12.1 79 10.4 11.9 87 GROS VENTRE SUMMIT 8750 11.5 12.7 91 12.6 11.7 108 GUNSIGHT PASS 9820 10.7 -M * 12.4 -M * KENDALL R.S. 7740 10.0 13.7 73 11.8 13.5 87 LOOMIS PARK 8240 13.6 16.0 85 15.3 16.0 96 NEW FORK LAKE 8340 8.2 10.4 79 8.3 10.3 81 SNIDER BASIN 8060 11.3 13.5 84 12.4 14.7 84 SPRING CREEK DIVIDE 9000 19.3 24.1 80 20.0 24.1 83 TRIPLE PEAK 8500 21.1 22.7 93 24.2 22.5 108 ----- ----- Basin wide percent of average 82 90 LOWER GREEN RIVER HAMS FORK 7840 10.6 12.1 88 8.7 11.1 78 HEWINTA 9519 12.6 10.2 124 14.9 12.7 117 HICKERSON PARK 9145 6.7 6.4 105 9.0 6.8 132 HOLE-IN-ROCK 9150 5.6 6.3 89 8.9 6.4 139 INDIAN CREEK 9425 20.4 24.7 83 -M 22.8 * KELLEY R.S. 8180 12.5 15.4 81 15.1 18.4 82 STEEL CREEK PARK 10200 13.4 14.0 96 16.6 14.1 118 ----- ----- Basin wide percent of average 92 105 UPPER BEAR RIVER BUG LAKE 7950 16.0 18.8 85 15.4 17.4 89 HAYDEN FORK 9212 18.1 14.6 124 21.2 18.6 114 KELLEY R.S. 8180 12.5 15.4 81 15.1 18.4 82 LILY LAKE 9156 13.4 11.8 114 16.0 15.4 104 MONTE CRISTO 8960 25.3 27.2 93 23.9 22.9 104 SALT RIVER SUMMIT 7760 11.8 13.2 89 13.7 17.0 81 TRIAL LAKE 9992 19.4 22.7 85 22.1 22.4 99 ----- ----- Basin wide percent of average 94 96 ----------------------------------------------------------------------------- -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.