FNUS75 KBOU 210936 FWSBOU SPOT FORECAST FOR SUGARLOAF F-1...USFS NATIONAL WEATHER SERVICE DENVER CO 333 AM MDT TUE APR 21 2009 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...HIGH PRESSURE ALOFT WILL BUILD ACROSS THE GREAT BASIN WITH A DECREASING NORTHWEST FLOW PATTERN. THE AIRMASS WILL REMAIN DRY. TEMPERATURES WILL CONTINUE TO WARM WITH SLIGHTLY LOWER RELATIVE HUMIDITY LEVELS. THERE WILL BE A SLIGHT CHANCE OF AFTERNOON AND EVENING HIGH BASED THUNDERSTORMS ON WEDNESDAY WITH WARMER TEMPERATURES AND LOWER HUMIDITY. ...THUNDERSTORMS IMPLY STRONG...GUSTY AND ERRATIC WINDS... .TODAY... SKY/WEATHER.........MOSTLY SUNNY. MAX TEMPERATURE.....65-69. MIN HUMIDITY........18-21%. 20-FOOT WINDS.......WEST 6-12 MPH. TRANSPORT WINDS.....NORTHWEST 12-20 MPH. MIXING HEIGHT.......1000-2000 FT AGL UNTIL 1100...THEN 6600-7600 FT AGL. SMOKE DISPERSAL.....POOR UNTIL 1000. VERY GOOD AFTER 1500. HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .TONIGHT... SKY/WEATHER.........MOSTLY CLEAR. MIN TEMPERATURE.....37-41. MAX HUMIDITY........50-53%. 20-FOOT WINDS.......WEST 5-10 MPH. TRANSPORT WINDS.....WEST 9-16 MPH. MIXING HEIGHT.......6800 FT AGL UNTIL 1900. 600-1600 FT AGL AFTER 2100. SMOKE DISPERSAL.....VERY GOOD UNTIL 1900. POOR AFTER 2100. HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .WEDNESDAY... SKY/WEATHER.........MOSTLY SUNNY UNTIL 1200...THEN PARTLY CLOUDY(50-60%). ISOLATED THUNDERSTORMS AFTER 1200. MAX TEMPERATURE.....68-71. MIN HUMIDITY........17-20%. 20-FOOT WINDS.......WEST 9-15 MPH. TRANSPORT WINDS.....WEST 13-24 MPH. MIXING HEIGHT.......400-1400 FT AGL UNTIL 0800. 9600-10600 FT AGL AFTER 1100. SMOKE DISPERSAL.....POOR UNTIL 0700. EXCELLENT AFTER 1200. HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .FORECAST DAYS 3 THROUGH 5... .THURSDAY...PARTLY CLOUDY. LOWS IN THE UPPER 30S. HIGHS IN THE LOWER 60S. WEST WINDS AROUND 13 MPH WITH GUSTS TO AROUND 25 MPH. .FRIDAY...PARTLY CLOUDY. LOWS IN THE UPPER 30S. HIGHS IN THE LOWER 60S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. .SATURDAY...MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS AFTER 0600. SLIGHT CHANCE OF SNOW SHOWERS AFTER 1800. LOWS IN THE MID 30S. HIGHS IN THE UPPER 50S. WEST WINDS AROUND 18 MPH WITH GUSTS TO AROUND 40 MPH. EXPERIMENTAL FIRE WEATHER TABLE FOR SUGARLOAF F-1. +++ DATA IN THE FOLLOWING TABLE HAS BEEN SAMPLED DIRECTLY FROM THE DIGITAL DATABASE. VALUES IN THE TABLE MAY NOT AGREE WITH INFORMATION IN THE NARRATIVE FORECAST. INFORMATION CONTAINED IN THIS TABLE SHOULD NOT BE CONSIDERED AN OFFICIAL FORECAST. PLEASE PROVIDE FEEDBACK IF THE INFORMATION IN THIS TABLE HAS BEEN REPRESENTATIVE AND/OR USEFUL. +++ FORECAST SC PP TF 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 04/21-03 23 0 31 71 W 14 22 2 1 NW32 204 W 14 2516 P 04/21-04 23 0 30 76 W 14 1 220 W 14 2661 P 04/21-05 23 0 30 77 W 14 1 235 W 14 2806 P 04/21-06 13 0 31 78 W 13 13 2 1 NW30 250 W 14 2951 P 04/21-07 13 0 32 77 W 12 1 440 W 13 4897 P 04/21-08 13 0 35 67 W 10 1 630 W 13 6842 P 04/21-09 13 0 40 57 W 10 10 2 1 NW29 820 W 13 8788 P 04/21-10 13 0 45 47 W 9 1 2669 W 14 34500 P 04/21-11 13 0 49 40 W 8 1 4518 NW 15 60211 G 04/21-12 13 0 52 36 W 8 8 2 1 NW26 6366 NW 15 85922 G 04/21-13 13 0 55 32 W 9 1 6871 NW 16 97975 G 04/21-14 13 0 56 30 W 10 1 7375 NW 17 110028 V 04/21-15 13 0 57 29 W 10 10 2 1 NW28 7880 NW 17 122080 V 04/21-16 13 0 57 29 W 12 1 7532 NW 17 116523 V 04/21-17 13 0 56 29 W 12 1 7185 W 17 110965 V 04/21-18 10 0 55 31 W 12 12 2 1 NW28 6837 W 17 105407 V 04/21-19 10 0 53 34 W 13 1 5110 W 16 76742 G 04/21-20 10 0 50 39 W 14 1 3384 W 15 48076 F 04/21-21 10 0 47 45 W 14 22 2 1 NW23 1657 W 14 19411 P 04/21-22 10 0 44 50 W 14 1 1387 W 13 16061 P 04/21-23 10 0 43 54 W 14 1 1117 W 13 12710 P 04/22-00 20 0 42 56 W 13 13 2 1 NW17 847 W 13 9360 P 04/22-01 20 0 40 58 W 13 1 743 W 13 8235 P 04/22-02 20 0 39 58 W 13 1 639 W 13 7110 P 04/22-03 20 0 39 56 W 13 13 2 1 NW18 535 W 13 5984 P 04/22-04 20 0 38 54 W 13 1 550 W 13 6038 P 04/22-05 20 0 39 51 W 13 1 564 W 13 6091 P 04/22-06 16 0 39 47 W 13 13 2 1 W16 285 W 13 3007 P 04/22-07 16 0 40 45 W 10 1 1612 W 14 23644 P 04/22-08 16 0 42 42 W 9 1 2939 W 16 44281 F 04/22-09 16 0 46 37 W 8 8 2 1 NW14 4266 W 17 64918 G 04/22-10 16 0 49 33 W 8 1 5689 W 17 88672 G 04/22-11 16 0 52 29 W 9 1 7112 W 18 112427 V 04/22-12 55 10 55 27 W 10 10 2 2 W 9 8535 W 18 136181 V 04/22-13 55 10 57 25 W 12 2 9439 W 18 148881 V 04/22-14 55 10 58 24 W 12 2 10343 W 18 161580 E 04/22-15 55 10 59 24 W 13 13 2 2 W17 11247 W 17 174279 E 04/22-16 55 10 59 23 W 13 2 10388 W 21 178437 E 04/22-17 55 10 58 25 W 13 2 9529 W 23 182595 E 04/22-18 55 10 56 26 W 13 13 2 2 NW29 8669 W 25 186754 E 04/22-19 55 10 54 28 W 13 2 6825 W 25 148322 V 04/22-20 29 9 51 31 W 13 1 4981 W 25 109891 V 04/22-21 29 9 47 34 W 13 13 3 1 NW23 3136 W 26 71460 G 04/22-22 29 9 45 36 W 13 1 2208 W 23 49473 F 04/22-23 29 9 43 37 W 14 1 1280 W 21 27485 P 04/23-00 23 0 42 37 W 14 22 5 1 NW23 352 W 18 5498 P 04/23-01 23 0 41 38 W 14 1 310 W 17 4661 P 04/23-02 23 0 40 40 W 15 1 267 W 16 3825 P 04/23-03 23 0 39 41 W 15 24 5 1 NW26 225 W 15 2989 P 04/23-04 23 0 39 42 W 15 1 227 W 16 3095 P 04/23-05 23 0 39 42 W 15 1 228 W 16 3201 P 04/23-06 21 0 39 42 W 15 24 3 1 NW24 230 W 16 3307 P 04/23-07 21 0 40 41 W 15 1 814 W 21 18734 P 04/23-08 21 0 43 37 W 15 1 1398 W 24 34160 P 04/23-09 21 0 47 33 W 15 24 4 1 W25 1982 W 29 49587 F 04/23-10 21 0 51 28 W 15 1 3627 W 28 86097 G 04/23-11 21 0 54 24 W 14 1 5272 W 28 122607 V 04/23-12 55 0 57 21 W 14 22 2 1 W31 6917 W 26 159117 E 04/23-13 55 0 59 20 W 15 1 8227 W 26 185374 E 04/23-14 55 0 61 19 W 16 1 9537 W 25 211630 E 04/23-15 55 0 61 19 W 16 25 2 1 W31 10848 W 25 237887 E 04/23-16 55 0 61 19 W 14 1 9819 W 26 222247 E 04/23-17 55 0 60 20 W 12 1 8789 W 28 206607 E 04/23-18 55 0 58 25 W 9 9 2 1 W32 7760 W 29 190967 E 04/23-19 55 0 57 29 W 9 1 5701 W 28 138867 V 04/23-20 45 0 53 34 W 9 1 3641 W 26 86767 G 04/23-21 45 0 49 39 W 9 9 3 1 W22 1582 W 25 34667 P 04/23-22 45 0 46 43 W 9 1 1131 W 21 23969 P 04/23-23 45 0 45 45 W 9 1 681 W 17 13271 P 04/24-00 45 0 43 47 W 9 9 4 1 W25 231 W 13 2573 P 04/24-01 45 0 42 48 W 7 1 206 W 13 2242 P 04/24-02 45 0 41 50 W 7 1 182 W 12 1912 P 04/24-03 45 0 40 50 W 8 8 2 1 SW28 158 W 12 1581 P 04/24-04 45 0 40 50 W 8 1 165 W 13 1822 P 04/24-05 45 0 40 49 W 9 1 172 W 14 2062 P 04/24-06 65 0 40 48 W 10 10 2 1 SW24 178 W 15 2303 P KEY: FORECAST - MONTH/DAY-HOUR OF FORECAST /24-HOUR CLOCK LOCAL TIME/ VALID AT SC - SKY COVER /PERCENT/ PP - PROBABILITY OF PRECIPITATION /PERCENT/ TF - 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...DAVE BUCHANAN REASON FOR REQUEST...PRESCRIBED .TAG 20090421.SUGAR.01/BOU