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 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 14.5 15.3 95 21.2 17.7 120 COTTONWOOD CREEK 7670 18.6 17.2 108 20.2 21.9 92 GRAND TARGHEE 9260 37.7 -M * 25.8 -M * GRANITE CREEK 6770 13.8 15.2 91 19.2 16.5 116 GRASSY LAKE 7265 24.7 28.0 88 32.5 29.6 110 GROS VENTRE SUMMIT 8750 10.9 10.9 100 12.1 10.2 119 GUNSIGHT PASS 9820 10.2 -M * 11.7 -M * LEWIS LAKE DIVIDE 7850 25.2 28.1 90 29.8 29.9 100 PHILLIPS BENCH 8200 24.3 22.6 108 27.4 23.4 117 SALT RIVER SUMMIT 7760 10.7 11.5 93 12.7 15.0 85 SNAKE RIVER STATION 6920 13.4 15.6 86 21.7 18.6 117 SPRING CREEK DIVIDE 9000 18.0 21.0 86 18.4 21.5 86 THUMB DIVIDE 7980 13.0 14.4 90 15.7 15.2 103 TOGWOTEE PASS 9580 21.5 19.8 109 23.6 19.7 120 TWO OCEAN PLATEAU 9240 28.4 22.3 127 23.3 22.2 105 WILLOW CREEK 8380 24.0 24.1 100 29.6 25.7 115 ----- ----- Basin wide percent of average 98 107 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 20.7 19.1 108 19.4 16.4 118 BLACK BEAR 8170 37.1 31.5 118 33.5 31.5 106 CANYON 7870 13.8 10.9 127 17.3 12.5 138 FISHER CREEK 9100 34.5 28.4 121 -M 29.1 * MADISON PLATEAU 7750 24.0 19.9 121 26.9 21.0 128 NORTHEAST ENTRANCE 7350 7.3 9.4 78 10.9 10.4 105 PARKER PEAK 9400 20.3 17.5 116 -M 13.1 * SYLVAN LAKE 8420 16.3 18.1 90 21.0 17.2 122 THUMB DIVIDE 7980 13.0 14.4 90 15.7 15.2 103 TWO OCEAN PLATEAU 9240 28.4 22.3 127 23.3 22.2 105 WHISKEY CREEK 6800 15.2 13.8 110 21.2 16.5 128 WHITE MILL 8700 22.0 19.5 113 -M 21.6 * WOLVERINE 7650 8.3 10.3 81 10.7 10.7 100 ----- ----- Basin wide percent of average 111 115 WIND RIVER BURROUGHS CREEK 8750 12.8 12.2 105 15.6 13.1 119 COLD SPRINGS 9630 5.3 6.9 77 8.3 8.1 102 DEER PARK 9700 11.0 13.9 79 15.5 17.1 91 HOBBS PARK 10100 10.0 11.5 87 10.7 9.5 113 LITTLE WARM 9370 7.8 9.2 85 11.1 10.4 107 SOUTH PASS 9040 10.3 13.5 76 13.0 14.4 90 ST. LAWRENCE ALT 8620 5.0 5.6 89 6.5 6.7 97 TOGWOTEE PASS 9580 21.5 19.8 109 23.6 19.7 120 TOWNSEND CREEK 8700 6.1 6.7 91 9.1 8.5 107 ----- ----- Basin wide percent of average 90 105 BIGHORN BASIN BALD MTN. 9380 12.7 15.4 82 12.2 13.5 90 BEAR TRAP MEADOW 8200 6.2 4.1 151 6.7 6.2 108 BLACKWATER 9780 19.7 19.7 100 18.5 16.5 112 BONE SPRINGS DIV 9350 12.7 12.5 102 13.9 11.1 125 EVENING STAR 9200 23.6 24.0 98 -M 20.8 * GRAVE SPRINGS 8550 6.8 6.8 100 7.7 7.4 104 KIRWIN 9550 9.8 8.8 111 11.9 8.8 135 MARQUETTE 8760 3.3 6.6 50 7.0 7.2 97 MIDDLE POWDER 7760 7.4 8.6 86 6.5 9.2 71 OWL CREEK 8975 4.1 3.9 105 5.4 4.2 129 POWDER RIVER PASS 9480 9.1 8.3 110 11.1 9.6 116 SHELL CREEK 9580 12.4 11.3 110 12.1 10.5 115 SYLVAN LAKE 8420 16.3 18.1 90 21.0 17.2 122 SYLVAN ROAD 7120 8.8 10.9 81 17.5 15.1 116 TIMBER CREEK 7950 2.5 4.0 62 6.1 5.2 117 YOUNTS PEAK 8350 13.7 14.2 96 15.1 13.1 115 ----- ----- Basin wide percent of average 95 112 SHOSHONE RIVER BLACKWATER 9780 19.7 19.7 100 18.5 16.5 112 EVENING STAR 9200 23.6 24.0 98 -M 20.8 * KIRWIN 9550 9.8 8.8 111 11.9 8.8 135 MARQUETTE 8760 3.3 6.6 50 7.0 7.2 97 SYLVAN LAKE 8420 16.3 18.1 90 21.0 17.2 122 SYLVAN ROAD 7120 8.8 10.9 81 17.5 15.1 116 YOUNTS PEAK 8350 13.7 14.2 96 15.1 13.1 115 ----- ----- Basin wide percent of average 93 117 POWDER-TONGUE BEAR TRAP MEADOW 8200 6.2 4.1 151 6.7 6.2 108 BIG GOOSE 7990 6.0 7.3 82 8.9 6.5 137 BONE SPRINGS DIV 9350 12.7 12.5 102 13.9 11.1 125 BURGESS JUNCTION 7880 8.5 8.6 99 10.1 9.1 111 CLOUD PEAK RESERVOIR 9860 11.5 9.5 121 11.3 9.4 120 DOME LAKE 8880 7.8 9.2 85 11.3 9.8 115 GRAVE SPRINGS 8550 6.8 6.8 100 7.7 7.4 104 HANSEN SAWMILL 8360 4.8 4.9 98 7.1 6.0 118 MIDDLE POWDER 7760 7.4 8.6 86 6.5 9.2 71 POWDER RIVER PASS 9480 9.1 8.3 110 11.1 9.6 116 SUCKER CREEK 8880 10.0 8.7 115 11.9 10.1 118 TIE CREEK 6870 4.8 4.6 104 8.7 7.6 114 ----- ----- Basin wide percent of average 103 113 BELLE FOURCHE BLIND PARK 6890 5.6 6.4 87 8.4 8.9 94 COLE CANYON 5910 4.9 5.4 91 6.0 5.3 113 NORTH RAPID CREEK 6130 6.3 6.4 98 6.5 7.2 90 ----- ----- Basin wide percent of average 92 98 UPPER N. PLATTE RIVER COLUMBINE 9160 20.5 20.7 99 22.9 19.8 116 DIVIDE PEAK 8880 19.3 14.9 130 19.6 16.2 121 ELK RIVER 8700 20.4 15.2 134 19.8 15.3 129 JOE WRIGHT 10120 18.5 16.4 113 22.0 19.1 115 NORTH FRENCH CREEK 10130 24.0 21.5 112 23.8 19.2 124 OLD BATTLE 10000 27.0 24.7 109 31.8 26.9 118 SAGE CREEK BASIN 7850 14.7 8.6 171 15.6 9.4 166 SOUTH BRUSH CREEK 8440 10.0 9.3 108 13.6 12.7 107 TOWER 10500 35.1 35.8 98 -M 30.4 * WEBBER SPRINGS 9250 20.9 19.9 105 24.5 21.0 117 WILLOW CREEK PASS 9540 12.5 9.1 137 12.9 9.8 132 ----- ----- Basin wide percent of average 114 122 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 16.8 18.1 93 17.5 16.6 105 CASPER MTN. 7900 8.9 10.7 83 10.7 10.5 102 DEADMAN HILL 10220 13.5 12.4 109 13.9 12.5 111 DEER PARK 9700 11.0 13.9 79 15.5 17.1 91 LAPRELE CREEK 8375 5.6 8.5 66 8.2 9.5 86 RENO HILL 8400 9.2 9.8 94 10.9 10.9 100 ROACH 9700 15.6 13.3 117 18.2 14.0 130 SAND LAKE 10050 21.6 23.7 91 21.6 18.4 117 SOUTH PASS 9040 10.3 13.5 76 13.0 14.4 90 WINDY PEAK 7900 6.2 5.7 109 7.7 8.1 95 ----- ----- Basin wide percent of average 92 104 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 13.4 9.1 147 14.1 11.7 121 DIVIDE PEAK 8880 19.3 14.9 130 19.6 16.2 121 OLD BATTLE 10000 27.0 24.7 109 31.8 26.9 118 SANDSTONE RS 8150 14.3 11.8 121 17.9 14.9 120 WHISKEY PARK 8950 25.3 22.4 113 29.0 22.4 129 ----- ----- Basin wide percent of average 120 122 UPPER GREEN RIVER BIG SANDY OPENING 9080 10.4 11.5 90 10.6 10.8 98 BLIND BULL SUM 8650 19.5 21.8 89 14.9 18.2 82 EAST RIM DIVIDE 7930 7.0 10.4 67 9.3 9.7 96 ELKHART PARK G.S. 9400 9.1 10.5 87 10.0 10.4 96 GROS VENTRE SUMMIT 8750 10.9 10.9 100 12.1 10.2 119 GUNSIGHT PASS 9820 10.2 -M * 11.7 -M * KENDALL R.S. 7740 9.5 11.7 81 11.3 11.9 95 LOOMIS PARK 8240 12.7 13.7 93 14.4 14.1 102 NEW FORK LAKE 8340 7.8 9.2 85 8.0 9.2 87 SNIDER BASIN 8060 10.3 11.8 87 11.3 13.1 86 SPRING CREEK DIVIDE 9000 18.0 21.0 86 18.4 21.5 86 TRIPLE PEAK 8500 18.5 19.8 93 21.7 19.6 111 ----- ----- Basin wide percent of average 88 95 LOWER GREEN RIVER HAMS FORK 7840 9.3 10.3 90 8.0 9.9 81 HEWINTA 9519 9.8 8.5 115 13.5 11.0 123 HICKERSON PARK 9145 5.7 5.5 104 8.0 5.9 136 HOLE-IN-ROCK 9150 4.7 5.3 89 7.9 5.5 144 INDIAN CREEK 9425 18.1 21.0 86 13.7 20.1 68 KELLEY R.S. 8180 11.3 13.2 86 13.9 16.4 85 STEEL CREEK PARK 10200 11.3 11.9 95 14.8 12.2 121 ----- ----- Basin wide percent of average 93 99 UPPER BEAR RIVER BUG LAKE 7950 14.3 16.2 88 13.9 15.3 91 HAYDEN FORK 9212 14.8 12.3 120 18.8 16.2 116 KELLEY R.S. 8180 11.3 13.2 86 13.9 16.4 85 LILY LAKE 9156 11.6 10.2 114 14.5 13.6 107 MONTE CRISTO 8960 22.5 23.2 97 21.6 20.0 108 SALT RIVER SUMMIT 7760 10.7 11.5 93 12.7 15.0 85 TRIAL LAKE 9992 16.3 19.4 84 19.4 19.3 101 ----- ----- Basin wide percent of average 96 99 ----------------------------------------------------------------------------- -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.