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 22 , 1998 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 -M 17.2 * -M 21.9 * COTTONWOOD CREEK 7600 -M 22.8 * -M 24.6 * GRANITE CREEK 6770 -M 17.8 * -M 23.1 * GRASSY LAKE 7265 -M 34.4 * -M 36.3 * GROS VENTRE SUMMIT 8775 9.8 15.0 65 10.9 15.6 70 LEWIS LAKE DIVIDE 7860 25.6 34.0 75 27.5 36.9 75 PHILLIPS BENCH 8200 23.9 28.0 85 24.1 29.1 83 SALT RIVER SUMMIT 7600 13.9 13.8 101 16.0 16.6 96 SNAKE RIVER STATION 6920 14.8 18.2 81 -M 25.4 * SPRING CREEK DIVIDE 9000 -M 26.8 * -M 26.8 * THUMB DIVIDE 7980 14.1 16.4 86 15.5 20.5 76 TOGWOTEE PASS 9580 22.7 23.8 95 21.1 27.6 76 TWO OCEAN PLATEAU 9360 24.1 25.6 94 24.0 30.2 79 WILLOW CREEK 8450 24.6 29.3 84 27.8 31.5 88 ----- ----- Basin wide percent of average 85 80 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 17.4 22.6 77 15.2 17.2 88 BLACK BEAR 7950 -M 36.6 * -M 38.8 * CANYON 7940 -M 12.4 * -M 13.7 * FISHER CREEK 9100 -M 34.3 * -M 35.0 * MADISON PLATEAU 7750 18.8 23.6 80 20.1 25.1 80 NORTHEAST ENTRANCE 7350 6.8 9.0 76 11.0 11.4 96 PARKER PEAK 9400 16.6 20.7 80 14.7 14.9 99 SYLVAN LAKE 8420 15.6 21.2 74 18.4 18.3 101 THUMB DIVIDE 7980 14.1 16.4 86 15.5 20.5 76 TWO OCEAN PLATEAU 9360 24.1 25.6 94 24.0 30.2 79 WHISKEY CREEK 6800 13.2 16.6 80 16.2 20.8 78 WHITE MILL 8700 20.4 24.2 84 18.9 27.1 70 WOLVERINE 7650 -M 11.3 * -M 12.2 * ----- ----- Basin wide percent of average 82 83 WIND RIVER BURROUGHS CREEK 8750 13.1 14.5 90 14.2 15.8 90 COLD SPRINGS 9630 -M 8.0 * -M 9.9 * DEER PARK 9700 -M -M * -M -M * HOBBS PARK 10100 -M 14.2 * -M 13.2 * LITTLE WARM 9620 9.2 10.9 84 11.3 12.5 90 SOUTH PASS 9040 -M 15.7 * -M 16.0 * ST. LAWRENCE ALT 8620 8.7 7.2 121 8.6 9.5 91 TOGWOTEE PASS 9580 22.7 23.8 95 21.1 27.6 76 TOWNSEND CREEK 8700 -M 9.4 * -M 11.6 * ----- ----- Basin wide percent of average 95* 84* BIGHORN BASIN BALD MTN. 9375 18.0 19.5 92 15.9 16.3 98 BEAR TRAP MEADOW 7900 6.1 6.8 90 6.4 7.6 84 BLACKWATER 9780 18.5 21.1 88 16.5 17.2 96 BONE SPRINGS DIV 9350 14.8 15.6 95 14.6 14.0 104 EVENING STAR 9200 -M 25.8 * -M 21.5 * GRAVE SPRINGS 8550 -M -M * -M 8.9 * KIRWIN 9550 -M 9.4 * -M 10.1 * MARQUETTE 8760 -M 7.6 * -M 8.7 * MIDDLE POWDER 7760 -M 11.4 * -M 11.0 * OWL CREEK 8975 -M 4.3 * -M 5.8 * POWDER RIVER PASS 9480 -M 10.3 * -M 10.8 * SHELL CREEK 9580 12.9 14.3 90 9.9 12.3 80 SYLVAN LAKE 8420 15.6 21.2 74 18.4 18.3 101 SYLVAN ROAD 8120 -M 12.4 * -M 15.4 * TIMBER CREEK 7950 -M 5.9 * -M 6.4 * YOUNTS PEAK 8350 -M 16.5 * -M 15.8 * ----- ----- Basin wide percent of average 87* 95* SHOSHONE RIVER BLACKWATER 9780 18.5 21.1 88 16.5 17.2 96 EVENING STAR 9200 -M 25.8 * -M 21.5 * KIRWIN 9550 -M 9.4 * -M 10.1 * MARQUETTE 8760 -M 7.6 * -M 8.7 * SYLVAN LAKE 8420 15.6 21.2 74 18.4 18.3 101 SYLVAN ROAD 8120 -M 12.4 * -M 15.4 * YOUNTS PEAK 8350 -M 16.5 * -M 15.8 * ----- ----- Basin wide percent of average 81* 98* POWDER-TONGUE BEAR TRAP MEADOW 7900 6.1 6.8 90 6.4 7.6 84 BONE SPRINGS DIV 9350 14.8 15.6 95 14.6 14.0 104 BURGESS JUNCTION 7880 -M 11.2 * -M 10.6 * CLOUD PEAK RESERVOIR 9860 -M 13.8 * -M 12.3 * DOME LAKE 8880 -M 13.0 * -M 12.3 * GRAVE SPRINGS 8550 -M -M * -M 8.9 * HANSEN SAWMILL 8760 -M 6.7 * -M 7.3 * MIDDLE POWDER 7760 -M 11.4 * -M 11.0 * POWDER RIVER PASS 9480 -M 10.3 * -M 10.8 * SUCKER CREEK 8880 11.4 11.4 100 12.9 12.3 105 TIE CREEK 6870 7.2 -M * 11.3 10.1 112 ----- ----- Basin wide percent of average 96* 103* BELLE FOURCHE BLIND PARK 6890 -M 10.5 * -M 9.2 * NORTH RAPID CREEK 6130 -M -M * -M -M * WARREN PEAK 6520 -M 10.5 * -M 7.4 * ----- ----- Basin wide percent of average * * UPPER N. PLATTE RIVER COLUMBINE 9400 20.9 24.0 87 21.0 23.2 91 DIVIDE PEAK 8800 17.4 19.8 88 18.3 21.5 85 ELK RIVER 8700 15.6 19.1 82 16.5 18.0 92 JOE WRIGHT 10120 18.1 20.6 88 21.2 23.5 90 NORTH FRENCH CREEK 10100 27.1 24.0 113 25.5 22.0 116 OLD BATTLE 10000 -M 30.1 * -M 28.4 * SOUTH BRUSH CREEK 8400 9.4 12.1 78 11.4 15.2 75 TOWER 10500 -M 42.9 * 36.3 34.2 106 WEBBER SPRINGS 9200 18.1 26.3 69 23.0 23.7 97 WILLOW CREEK PASS 9540 6.3 11.1 57 6.8 11.7 58 ----- ----- Basin wide percent of average 85 93 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 19.3 24.2 80 18.9 18.1 104 CASPER MTN. 7900 12.2 15.0 81 11.5 13.0 88 DEADMAN HILL 10220 13.4 15.7 85 12.6 15.5 81 DEER PARK 9700 -M -M * -M -M * LAPRELE CREEK 8320 8.8 9.9 89 10.3 10.9 94 RENO HILL 8400 11.5 13.2 87 10.7 17.7 60 ROACH 9700 13.0 16.3 80 15.0 19.9 75 SAND LAKE 10080 23.6 31.2 76 21.1 19.1 110 SOUTH PASS 9040 -M 15.7 * -M 16.0 * WINDY PEAK 7840 7.1 8.1 88 8.1 8.7 93 ----- ----- Basin wide percent of average 82 88 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 12.9 11.0 117 14.7 14.4 102 DIVIDE PEAK 8800 17.4 19.8 88 18.3 21.5 85 OLD BATTLE 10000 -M 30.1 * -M 28.4 * SANDSTONE RS 8150 14.6 14.2 103 17.7 17.6 101 WHISKEY PARK 8950 26.2 27.4 96 24.9 26.4 94 ----- ----- Basin wide percent of average 98 95 UPPER GREEN RIVER BIG SANDY OPENING 9100 10.4 13.9 75 9.7 15.9 61 BLIND BULL SUM 8650 21.0 28.2 74 16.3 23.4 70 EAST RIM DIVIDE 7930 9.7 13.5 72 9.7 14.9 65 ELKHART PARK G.S. 9400 10.8 13.3 81 11.3 15.7 72 GROS VENTRE SUMMIT 8775 9.8 15.0 65 10.9 15.6 70 KENDALL R.S. 7740 12.2 14.5 84 12.3 15.3 80 LOOMIS PARK 8240 -M 17.0 * -M 18.5 * NEW FORK LAKE 8340 -M 10.9 * -M 14.2 * SNIDER BASIN 8250 -M 14.4 * -M 14.9 * SPRING CREEK DIVIDE 9000 -M 26.8 * -M 26.8 * TRIPLE PEAK 8500 -M 24.7 * -M 30.5 * ----- ----- Basin wide percent of average 75 70 LOWER GREEN RIVER HAMS FORK 7840 9.8 12.1 81 9.6 13.1 73 HEWINTA 9500 -M 10.6 * -M 12.2 * HICKERSON PARK 9150 10.5 6.3 167 11.4 8.8 130 HOLE-IN-ROCK 9150 7.9 5.9 134 10.0 8.8 114 INDIAN CREEK 9425 -M 27.3 * -M 25.3 * KELLEY R.S. 8180 14.1 16.5 85 14.6 18.4 79 STEEL CREEK PARK 10100 13.8 15.2 91 16.4 12.0 137 ----- ----- Basin wide percent of average 100 101 UPPER BEAR RIVER BUG LAKE 7950 20.4 19.9 103 19.7 18.4 107 HAYDEN FORK 9400 12.3 15.9 77 18.0 17.8 101 KELLEY R.S. 8180 14.1 16.5 85 14.6 18.4 79 LILY LAKE 9050 12.7 12.5 102 15.3 13.8 111 MONTE CRISTO 8960 28.8 27.8 104 24.7 24.1 102 SALT RIVER SUMMIT 7600 13.9 13.8 101 16.0 16.6 96 TRIAL LAKE 9960 19.1 24.2 79 20.1 22.6 89 ----- ----- Basin wide percent of average 93 97 ----------------------------------------------------------------------------- -M = Missing data * = Data may not provide a valid measure of conditions. 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.