FNUS75 KBOU 151622 FWSBOU SPOT FORECAST FOR SLACK-WEISS...USFS NATIONAL WEATHER SERVICE DENVER CO 903 AM MST THU DEC 15 2011 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...FLAT UPPER LEVEL RIDGE WILL BUILD OVER THE CENTRAL ROCKIES WITH LIGHT NORTHWEST FLOW ALOFT. SURFACE HIGH PRESSURE BUILDING OVER COLORADO WITH LIGHT AND VARIABLE SURFACE WINDS. THE AIRMASS WILL BE DRY AND STABLE. A WEAK COLD FRONT WILL MOVE INTO THE REGION ON FRIDAY. THERE WILL BE A BRIEF PERIOD OF FAIR SMOKE DISPERSION THIS AFTERNOON...OTHERWISE IT WILL BE POOR. ...THUNDERSTORMS IMPLY STRONG...GUSTY AND ERRATIC WINDS... .TODAY... SKY/WEATHER.........PARTLY CLOUDY(30-40%). MAX TEMPERATURE.....30-32. MIN HUMIDITY........41-43%. 20-FOOT WINDS.......SOUTH/SOUTHEAST WINDS 4-7 MPH. TRANSPORT WINDS.....SOUTHWEST 8-16 MPH. MIXING HEIGHT.......BELOW 1000 FT AGL UNTIL 0900...THEN 2800-3800 FT AGL. SMOKE DISPERSAL.....POOR UNTIL 1300...THEN FAIR UNTIL 1600...THEN POOR. HAINES INDEX........3 VERY LOW. .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY(35-45%). MIN TEMPERATURE.....8-10. MAX HUMIDITY........87-90%. 20-FOOT WINDS.......SOUTHWEST WINDS AROUND 5 MPH. TRANSPORT WINDS.....SOUTHWEST 4-12 MPH. MIXING HEIGHT.......1200-1600 FT AGL UNTIL 2000...THEN BELOW 1000 FT AGL. SMOKE DISPERSAL.....POOR. HAINES INDEX........2 VERY LOW. .FRIDAY... SKY/WEATHER.........MOSTLY CLOUDY(50-60%) UNTIL 1100...THEN PARTLY CLOUDY UNTIL 1700...THEN MOSTLY SUNNY. MAX TEMPERATURE.....26. MIN HUMIDITY........43%. 20-FOOT WINDS.......SOUTHEAST WINDS 4-7 MPH UNTIL 1200...THEN WEST 5-8 MPH. TRANSPORT WINDS.....WEST 4-8 MPH. MIXING HEIGHT.......BELOW 1000 FT AGL UNTIL 0900...THEN 2200-3200 FT AGL. SMOKE DISPERSAL.....POOR. HAINES INDEX........3 VERY LOW. .FORECAST DAYS 3 THROUGH 5... .SATURDAY...MOSTLY CLEAR. LOWS AROUND 10. HIGHS IN THE MID 30S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. .SUNDAY...MOSTLY CLEAR. LOWS AROUND 14. HIGHS IN THE MID 30S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. .MONDAY...PARTLY CLOUDY. LOWS AROUND 12. HIGHS IN THE UPPER 20S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. FIRE WEATHER TABLE FOR SLACK-WEISS. +++ DATA IN THE FOLLOWING TABLE HAS BEEN SAMPLED DIRECTLY FROM THE FORECAST DATABASE. VALUES IN THE TABLE MAY VARY SLIGHTLY FROM INFORMATION IN THE NARRATIVE FORECAST. PLEASE PROVIDE FEEDBACK IF THE INFORMATION IN THIS TABLE HAS BEEN REPRESENTATIVE AND/OR USEFUL. +++ FORECAST SC PP WR AT RH 20FT G H L 10K MIXG TRAN VENTL AJTV VALID AT % % % F % WIND S I A WIND HGT WIND RATE RATNG MPH T L MPH AGL MPH KT-FT 12/15-09 22 2 0 16 78 S 6 6 3 1 NW17 1577 SW 9 13862 P 12/15-10 22 2 0 21 64 S 8 8 2 1 NW14 2479 SW10 22182 P 12/15-11 22 0 0 26 53 S 9 14 2 1 NW12 3380 W10 30503 P 12/15-12 22 0 0 28 48 S 9 14 2 1 NW10 3882 W12 39173 P 12/15-13 22 0 0 30 45 S 9 9 2 1 W12 4384 W13 47843 F 12/15-14 22 0 0 30 43 S 8 8 2 1 W13 4885 W14 56513 F 12/15-15 22 0 0 29 46 S 7 7 2 1 W14 4021 W14 47550 F 12/15-16 22 0 0 26 51 SW 7 7 2 1 W15 3158 W14 38587 P 12/15-17 34 0 0 22 61 SW 6 6 2 1 W16 2294 W15 29624 P 12/15-18 34 0 0 19 68 SW 5 5 2 1 W17 1699 W13 21173 P 12/15-19 34 0 0 17 74 SW 3 3 2 1 W17 1104 W12 12721 P 12/15-20 34 0 0 16 79 SW 3 3 2 1 W17 509 W 9 4270 P 12/15-21 34 0 0 15 83 SW 3 3 2 1 W17 542 W 9 4597 P 12/15-22 34 0 0 14 84 SW 5 5 2 1 W16 576 W10 4925 P 12/15-23 46 0 0 15 82 SW 5 5 2 1 W16 610 W10 5253 P 12/16-00 46 0 0 14 81 SW 5 5 2 1 W18 503 W 9 4095 P 12/16-01 46 0 0 13 85 SW 5 5 2 1 W21 396 SW 8 2937 P 12/16-02 46 0 0 12 87 SW 5 5 2 1 W24 290 SW 7 1779 P 12/16-03 46 0 0 11 87 SW 5 5 2 1 W28 273 SW 7 1561 P 12/16-04 46 0 0 10 89 SW 3 3 2 1 W31 257 SW 6 1343 P 12/16-05 53 6 1 9 90 SW 3 3 2 1 W35 240 SW 6 1125 P 12/16-06 53 6 1 9 91 SW 3 3 2 1 W36 312 SW 5 1327 P 12/16-07 53 6 1 8 95 SW 2 2 2 1 W37 385 SW 5 1529 P 12/16-08 53 6 1 13 80 SW 2 2 2 1 W36 457 SW 5 1731 P 12/16-09 53 6 1 17 70 SW 2 2 2 1 W30 1730 W 6 13019 P 12/16-10 53 6 1 21 60 SW 2 2 2 1 NW24 3003 W 8 24307 P 12/16-11 31 6 1 25 51 SW 3 3 2 1 N21 4276 W 9 35596 P 12/16-12 31 6 1 26 48 SW 5 5 2 1 N24 4234 W 9 34317 P 12/16-13 31 6 1 26 47 W 6 6 2 1 N31 4193 W 9 33038 P 12/16-14 31 6 1 26 45 W 6 6 2 1 N36 4151 W 9 31758 P 12/16-15 31 6 1 26 43 W 6 6 2 1 N36 3224 W 9 24757 P 12/16-16 31 6 1 23 45 W 5 5 3 1 N32 2296 W 9 17755 P 12/16-17 19 0 0 20 52 W 3 3 3 1 N29 1368 W 9 10753 P 12/16-18 19 0 0 17 57 SW 3 3 3 1 N24 1030 W 8 7642 P 12/16-19 19 0 0 15 63 S 3 3 4 1 N21 693 SW 6 4532 P 12/16-20 19 0 0 14 68 S 3 3 4 1 N17 355 SW 5 1422 P 12/16-21 19 0 0 13 73 S 3 3 4 1 N16 322 SW 5 1325 P 12/16-22 19 0 0 13 76 SW 3 3 4 1 N15 289 SW 5 1228 P 12/16-23 12 0 0 13 76 SW 3 3 4 1 NW15 256 SW 5 1132 P 12/17-00 12 0 0 13 77 S 3 3 3 1 NW14 223 SW 5 914 P 12/17-01 12 0 0 11 81 S 3 3 3 1 NW14 190 S 5 696 P 12/17-02 12 0 0 11 82 S 3 3 2 1 NW13 156 S 3 479 P 12/17-03 12 0 0 10 82 S 3 3 2 1 NW13 145 S 3 479 P 12/17-04 12 0 0 9 85 S 5 5 3 1 W12 133 SW 5 479 P 12/17-05 9 3 1 9 87 SW 5 5 3 1 W13 121 SW 5 479 P 12/17-06 9 3 1 9 89 S 5 5 3 1 W13 115 SW 5 411 P 12/17-07 9 3 1 8 94 S 3 3 3 1 W13 108 S 3 343 P 12/17-08 9 3 1 8 99 S 3 3 3 1 W14 101 S 3 275 P 12/17-09 9 3 1 14 77 S 3 3 3 1 W16 382 S 5 2265 P 12/17-10 9 3 1 21 59 S 3 3 3 1 W17 663 SW 6 4255 P 12/17-11 8 3 1 28 45 SW 3 3 3 1 W20 943 SW 8 6245 P 12/17-12 8 3 1 31 40 SW 3 3 3 1 W21 1253 SW 8 8683 P 12/17-13 8 3 1 33 36 SW 3 3 3 1 W23 1563 SW 8 11121 P 12/17-14 8 3 1 34 34 SW 3 3 3 1 W23 1872 W 8 13560 P 12/17-15 8 3 1 33 36 SW 3 3 3 1 W23 1334 SW 7 9368 P 12/17-16 8 3 1 28 42 SW 3 3 3 1 W23 796 SW 6 5176 P 12/17-17 11 2 0 24 49 S 3 3 3 1 W22 258 SW 5 983 P 12/17-18 11 2 0 22 54 S 3 3 3 1 W20 217 S 3 772 P 12/17-19 11 2 0 20 58 S 3 3 3 1 W17 177 S 3 560 P 12/17-20 11 2 0 18 62 SE 3 3 3 1 W16 136 S 3 348 P 12/17-21 11 2 0 17 64 S 3 3 3 1 W14 129 S 3 324 P 12/17-22 11 2 0 17 65 S 2 2 3 1 W13 123 S 2 300 P 12/17-23 8 3 1 17 63 S 2 2 3 1 W12 116 S 2 277 P 12/18-00 8 3 1 18 62 S 2 2 3 1 W12 118 S 3 305 P 12/18-01 8 3 1 18 61 S 2 2 3 1 SW13 119 S 3 334 P 12/18-02 8 3 1 17 63 S 2 2 3 1 SW13 120 S 3 363 P 12/18-03 8 3 1 16 65 SW 2 2 3 1 SW13 121 SW 3 409 P 12/18-04 8 3 1 15 69 SW 3 3 4 1 SW13 121 SW 5 456 P 12/18-05 12 3 1 14 71 SW 3 3 4 1 SW13 121 SW 5 502 P KEY: FORECAST - MONTH/DAY-HOUR OF FORECAST /24-HOUR CLOCK LOCAL TIME/ VALID AT SC - SKY COVER /PERCENT/ PP - PROBABILITY OF PRECIPITATION 0.01 INCH /PERCENT/ WR - PROBABILITY OF WETTING RAIN 0.1 INCH /PERCENT/ AT - TEMPERATURE /DEGREES F/ RH - RELATIVE HUMIDITY /PERCENT/ 20FT WIND - 20-FOOT WIND /MPH/ GST - 20-FOOT WIND GUST /MPH/ HI - HAINES INDEX LAL - LIGHTNING ACTIVITY LEVEL 10K WIND - 10000 FEET ABOVE GROUND LEVEL FREE-AIR WINDS /MPH/ MIXG HGT - MIXING HEIGHT /FEET ABOVE GROUND LEVEL/ TRAN WIND - TRANSPORT WINDS /MPH/ VENTL RATE - VENTILATION RATE /KNOT-FEET/ AJTV RATNG - SMOKE DISPERSION ADJECTIVE RATING P - POOR F - FAIR G - GOOD V - VERY GOOD E- EXCELLENT $$ FORECASTER...WFO BOULDER REQUESTED BY...CASEY CHEESBROUGH REASON FOR REQUEST...PRESCRIBED .TAG 20111215.SLACK.01/BOU