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 MONDAY: FEBRUARY 25 , 2008 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 15.0 15.5 97 21.5 18.0 119 COTTONWOOD CREEK 7670 19.0 17.6 108 20.6 22.2 93 GRAND TARGHEE 9260 38.6 -M * 26.3 -M * GRANITE CREEK 6770 14.3 15.5 92 19.6 16.8 117 GRASSY LAKE 7265 25.7 28.4 90 33.2 30.0 111 GROS VENTRE SUMMIT 8750 11.1 11.1 100 12.2 10.4 117 GUNSIGHT PASS 9820 10.4 -M * 12.0 -M * LEWIS LAKE DIVIDE 7850 25.6 28.6 90 30.6 30.4 101 PHILLIPS BENCH 8200 25.2 23.0 110 28.2 23.8 118 SALT RIVER SUMMIT 7760 11.1 11.7 95 13.1 15.3 86 SNAKE RIVER STATION 6920 13.9 15.9 87 21.7 18.9 115 SPRING CREEK DIVIDE 9000 18.6 21.3 87 18.9 21.8 87 THUMB DIVIDE 7980 13.4 14.7 91 16.1 15.4 105 TOGWOTEE PASS 9580 21.9 20.1 109 24.0 20.0 120 TWO OCEAN PLATEAU 9240 28.7 22.6 127 23.3 22.5 104 WILLOW CREEK 8380 24.8 24.5 101 29.9 26.1 115 ----- ----- Basin wide percent of average 99 107 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 21.0 19.4 108 19.7 16.6 119 BLACK BEAR 8170 37.9 32.0 118 33.8 32.0 106 CANYON 7870 14.1 11.1 127 17.5 12.6 139 FISHER CREEK 9100 34.8 28.8 121 -M 29.5 * MADISON PLATEAU 7750 24.4 20.2 121 27.4 21.3 129 NORTHEAST ENTRANCE 7350 7.7 9.5 81 11.1 10.5 106 PARKER PEAK 9400 20.8 17.8 117 -M 13.3 * SYLVAN LAKE 8420 16.8 18.4 91 21.0 17.4 121 THUMB DIVIDE 7980 13.4 14.7 91 16.1 15.4 105 TWO OCEAN PLATEAU 9240 28.7 22.6 127 23.3 22.5 104 WHISKEY CREEK 6800 15.5 14.0 111 21.3 16.7 128 WHITE MILL 8700 22.4 19.7 114 23.0 22.0 105 WOLVERINE 7650 8.6 10.4 83 10.9 10.9 100 ----- ----- Basin wide percent of average 112 114 WIND RIVER BURROUGHS CREEK 8750 13.0 12.4 105 15.8 13.3 119 COLD SPRINGS 9630 5.4 7.1 76 8.4 8.2 102 DEER PARK 9700 11.6 14.3 81 15.0 17.3 87 HOBBS PARK 10100 10.2 11.7 87 10.6 9.6 110 LITTLE WARM 9370 7.8 9.3 84 11.1 10.6 105 SOUTH PASS 9040 10.7 13.8 78 13.5 14.6 92 ST. LAWRENCE ALT 8620 5.2 5.8 90 6.7 6.8 99 TOGWOTEE PASS 9580 21.9 20.1 109 24.0 20.0 120 TOWNSEND CREEK 8700 6.3 6.8 93 9.3 8.6 108 ----- ----- Basin wide percent of average 91 105 BIGHORN BASIN BALD MTN. 9380 12.9 15.6 83 12.4 13.7 91 BEAR TRAP MEADOW 8200 6.3 4.2 150 6.7 6.2 108 BLACKWATER 9780 19.9 20.1 99 18.6 16.7 111 BONE SPRINGS DIV 9350 12.8 12.8 100 14.1 11.2 126 EVENING STAR 9200 23.8 24.4 98 -M 21.1 * GRAVE SPRINGS 8550 6.9 6.9 100 7.8 7.5 104 KIRWIN 9550 9.9 9.0 110 12.0 8.9 135 MARQUETTE 8760 3.3 6.8 49 7.0 7.3 96 MIDDLE POWDER 7760 7.5 8.7 86 6.4 9.3 69 OWL CREEK 8975 4.1 4.0 102 5.4 4.3 126 POWDER RIVER PASS 9480 9.2 8.5 108 11.1 9.7 114 SHELL CREEK 9580 12.5 11.6 108 12.3 10.6 116 SYLVAN LAKE 8420 16.8 18.4 91 21.0 17.4 121 SYLVAN ROAD 7120 9.0 11.0 82 17.7 15.3 116 TIMBER CREEK 7950 2.6 4.1 63 6.1 5.2 117 YOUNTS PEAK 8350 13.9 14.4 97 15.2 13.2 115 ----- ----- Basin wide percent of average 95 111 SHOSHONE RIVER BLACKWATER 9780 19.9 20.1 99 18.6 16.7 111 EVENING STAR 9200 23.8 24.4 98 -M 21.1 * KIRWIN 9550 9.9 9.0 110 12.0 8.9 135 MARQUETTE 8760 3.3 6.8 49 7.0 7.3 96 SYLVAN LAKE 8420 16.8 18.4 91 21.0 17.4 121 SYLVAN ROAD 7120 9.0 11.0 82 17.7 15.3 116 YOUNTS PEAK 8350 13.9 14.4 97 15.2 13.2 115 ----- ----- Basin wide percent of average 93 116 POWDER-TONGUE BEAR TRAP MEADOW 8200 6.3 4.2 150 6.7 6.2 108 BIG GOOSE 7990 6.1 7.4 82 9.0 6.6 136 BONE SPRINGS DIV 9350 12.8 12.8 100 14.1 11.2 126 BURGESS JUNCTION 7880 8.7 8.7 100 10.2 9.2 111 CLOUD PEAK RESERVOIR 9860 11.6 9.7 120 11.7 9.5 123 DOME LAKE 8880 7.9 9.3 85 11.4 9.9 115 GRAVE SPRINGS 8550 6.9 6.9 100 7.8 7.5 104 HANSEN SAWMILL 8360 4.9 5.0 98 7.1 6.1 116 MIDDLE POWDER 7760 7.5 8.7 86 6.4 9.3 69 POWDER RIVER PASS 9480 9.2 8.5 108 11.1 9.7 114 SUCKER CREEK 8880 10.1 8.8 115 12.1 10.2 119 TIE CREEK 6870 4.9 4.7 104 8.8 7.7 114 ----- ----- Basin wide percent of average 102 113 BELLE FOURCHE BLIND PARK 6890 5.8 6.5 89 8.5 9.0 94 COLE CANYON 5910 4.9 5.5 89 6.0 5.3 113 NORTH RAPID CREEK 6130 6.8 6.5 105 6.8 7.2 94 ----- ----- Basin wide percent of average 95 99 UPPER N. PLATTE RIVER COLUMBINE 9160 21.1 21.1 100 23.1 20.1 115 DIVIDE PEAK 8880 19.4 15.1 128 19.8 16.4 121 ELK RIVER 8700 21.0 15.5 135 20.0 15.5 129 JOE WRIGHT 10120 19.0 16.7 114 21.8 19.4 112 NORTH FRENCH CREEK 10130 24.5 21.8 112 24.4 19.5 125 OLD BATTLE 10000 27.5 25.2 109 31.9 27.3 117 SAGE CREEK BASIN 7850 14.7 8.8 167 15.6 9.5 164 SOUTH BRUSH CREEK 8440 10.4 9.5 109 13.8 12.9 107 TOWER 10500 -M 36.3 * -M 30.8 * WEBBER SPRINGS 9250 21.3 20.3 105 25.0 21.3 117 WILLOW CREEK PASS 9540 12.8 9.3 138 13.0 10.0 130 ----- ----- Basin wide percent of average 117 121 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 17.2 18.3 94 17.8 16.9 105 CASPER MTN. 7900 9.0 10.9 83 10.7 10.7 100 DEADMAN HILL 10220 13.9 12.5 111 14.3 12.7 113 DEER PARK 9700 11.6 14.3 81 15.0 17.3 87 LAPRELE CREEK 8375 5.7 8.6 66 8.2 9.6 85 RENO HILL 8400 9.2 10.0 92 11.0 11.1 99 ROACH 9700 15.8 13.4 118 18.5 14.2 130 SAND LAKE 10050 22.0 24.1 91 22.1 18.6 119 SOUTH PASS 9040 10.7 13.8 78 13.5 14.6 92 WINDY PEAK 7900 6.2 5.8 107 7.8 8.2 95 ----- ----- Basin wide percent of average 92 104 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 13.7 9.3 147 14.3 11.9 120 DIVIDE PEAK 8880 19.4 15.1 128 19.8 16.4 121 OLD BATTLE 10000 27.5 25.2 109 31.9 27.3 117 SANDSTONE RS 8150 14.6 12.0 122 18.2 15.1 121 WHISKEY PARK 8950 25.9 22.8 114 29.2 22.7 129 ----- ----- Basin wide percent of average 120 121 UPPER GREEN RIVER BIG SANDY OPENING 9080 10.7 11.7 91 10.9 10.9 100 BLIND BULL SUM 8650 20.0 22.2 90 15.4 18.4 84 EAST RIM DIVIDE 7930 7.3 10.6 69 9.4 9.8 96 ELKHART PARK G.S. 9400 9.3 10.7 87 10.0 10.6 94 GROS VENTRE SUMMIT 8750 11.1 11.1 100 12.2 10.4 117 GUNSIGHT PASS 9820 10.4 -M * 12.0 -M * KENDALL R.S. 7740 9.7 11.9 82 11.5 12.1 95 LOOMIS PARK 8240 13.0 13.9 94 14.7 14.3 103 NEW FORK LAKE 8340 8.0 9.3 86 8.2 9.3 88 SNIDER BASIN 8060 10.7 12.0 89 11.7 13.3 88 SPRING CREEK DIVIDE 9000 18.6 21.3 87 18.9 21.8 87 TRIPLE PEAK 8500 19.2 20.1 96 22.3 19.9 112 ----- ----- Basin wide percent of average 89 96 LOWER GREEN RIVER HAMS FORK 7840 9.7 10.5 92 8.3 10.0 83 HEWINTA 9519 10.4 8.7 120 14.1 11.2 126 HICKERSON PARK 9145 6.0 5.6 107 8.3 6.0 138 HOLE-IN-ROCK 9150 5.0 5.4 93 8.3 5.6 148 INDIAN CREEK 9425 18.8 21.4 88 13.7 20.4 67 KELLEY R.S. 8180 11.9 13.4 89 14.4 16.6 87 STEEL CREEK PARK 10200 12.0 12.1 99 15.5 12.4 125 ----- ----- Basin wide percent of average 96 100 UPPER BEAR RIVER BUG LAKE 7950 15.0 16.4 91 14.5 15.6 93 HAYDEN FORK 9212 15.9 12.6 126 19.7 16.5 119 KELLEY R.S. 8180 11.9 13.4 89 14.4 16.6 87 LILY LAKE 9156 12.3 10.4 118 14.9 13.8 108 MONTE CRISTO 8960 23.8 23.6 101 22.3 20.4 109 SALT RIVER SUMMIT 7760 11.1 11.7 95 13.1 15.3 86 TRIAL LAKE 9992 17.4 19.8 88 19.5 19.7 99 ----- ----- Basin wide percent of average 100 100 ----------------------------------------------------------------------------- -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.