FNUS75 KBOU 091506 FWSBOU SPOT FORECAST FOR SHADED FUELS BREAK...USFS NATIONAL WEATHER SERVICE DENVER CO 900 AM MDT THU APR 9 2009 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...A WEAK TROUGH IS MOVING ACROSS COLORADO TODAY...WITH NORTHERLY WINDS AND COOLER MOIST AIR BEHIND IT. WITH CLOUD COVER AND LOWER TEMPERATURES THE MIXING HEIGHTS IN THE TABLE LOOK A BIT TOO HIGH...BUT THERE SHOULD STILL BE DECENT MIXING. IF THERE ARE ANY SHOWERS THEY SHOULD BE TRANSIENT...THOUGH A WETTING RAIN OR SNOW IS POSSIBLE. SOUTHWEST WINDS WILL LIKELY LAST ALL DAY ON FRIDAY...THOUGH BRIEF UPSLOPE IS POSSIBLE IN THE AFTERNOON. SOUTHWEST WINDS ARE EXPECTED TO BE A LITTLE STRONGER ON SATURDAY AHEAD OF THE NEXT STORM SYSTEM. ...THUNDERSTORMS IMPLY STRONG...GUSTY AND ERRATIC WINDS... .TODAY... SKY/WEATHER.........PARTLY CLOUDY(50-60%) UNTIL 1200...THEN MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS UNTIL 1200...THEN SCATTERED RAIN SHOWERS AND SNOW SHOWERS. MAX TEMPERATURE.....47-51. MIN HUMIDITY........27-35%. 20-FOOT WINDS.......NORTHEAST 4-8 MPH BECOMING NORTH 8-15 MPH. TRANSPORT WINDS.....NORTH 15-20 MPH. MIXING HEIGHT.......4000 FT AGL RISING TO 8000 FT AGL BY 1400. SMOKE DISPERSAL.....GOOD UNTIL 1200...THEN VERY GOOD. .TONIGHT... SKY/WEATHER.........CLOUDY UNTIL 2400...THEN PARTLY CLOUDY(40-50%). CHANCE OF SNOW SHOWERS UNTIL 2400. MIN TEMPERATURE.....21-25. MAX HUMIDITY........80-90%. 20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-8 MPH. TRANSPORT WINDS.....WEST 15 MPH BECOMING SOUTHWEST 10 MPH. MIXING HEIGHT.......LOWERING TO 2000 FT AGL BY 2000 AND 1000 FT AGL BY 2400. SMOKE DISPERSAL.....FAIR UNTIL 2000...THEN POOR. .FRIDAY... SKY/WEATHER.........PARTLY CLOUDY(40-50%). MAX TEMPERATURE.....51-55. MIN HUMIDITY........22-30%. 20-FOOT WINDS.......SOUTHWEST 4-8 MPH UNTIL 1000...THEN SOUTHWEST 7-14 MPH. TRANSPORT WINDS.....SOUTHWEST 10 MPH INCREASING TO 20 MPH. MIXING HEIGHT.......RISING TO 4000 FT AGL BY 1000 AND 8000 FT AGL BY 1400. SMOKE DISPERSAL.....POOR UNTIL 1000...THEN GOOD UNTIL 1400...THEN VERY GOOD. .FORECAST DAYS 3 THROUGH 5... .SATURDAY...MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS AND SNOW SHOWERS AFTER 1200 UNTIL 1800...THEN CHANCE OF SNOW. LOWS IN THE UPPER 20S. HIGHS IN THE MID 50S. SOUTHWEST WINDS AROUND 12 MPH. .SUNDAY...MOSTLY CLOUDY. CHANCE OF SNOW UNTIL 1800...THEN SLIGHT CHANCE OF SNOW. LOWS IN THE MID 20S. HIGHS IN THE MID 50S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. .MONDAY...PARTLY CLOUDY. SLIGHT CHANCE OF SNOW UNTIL 0600...THEN SLIGHT CHANCE OF SNOW SHOWERS. LOWS IN THE UPPER 20S. HIGHS IN THE UPPER 50S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. EXPERIMENTAL FIRE WEATHER TABLE FOR SHADED FUELS BREAK. +++ 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 04/09-08 53 10 38 39 W 13 1 5560 NW 20 93481 G 04/09-09 53 10 41 34 NW 14 21 3 1 NW20 6962 NW 20 117541 V 04/09-10 53 10 43 32 NW 15 1 8186 NW 21 149574 V 04/09-11 53 10 45 31 NW 16 1 9410 NW 22 181606 E 04/09-12 67 30 46 30 NW 16 24 2 1 NW14 10634 NW 23 213638 E 04/09-13 67 30 47 29 NW 16 1 10302 NW 22 200929 E 04/09-14 67 30 48 28 NW 14 1 9971 NW 22 188221 E 04/09-15 82 30 48 28 NW 13 20 2 1 NW16 9639 NW 21 175512 E 04/09-16 82 30 48 28 NW 10 1 9777 NW 21 179652 E 04/09-17 82 30 48 29 NW 8 1 9916 NW 22 183793 E 04/09-18 86 30 46 31 NW 7 7 2 1 NW20 10054 NW 22 187933 E 04/09-19 86 30 42 38 NW 6 1 7833 NW 20 142015 V 04/09-20 86 30 36 48 W 7 1 5611 NW 18 96097 G 04/09-21 86 30 31 59 W 7 7 2 1 NW24 3389 NW 17 50179 F 04/09-22 86 30 30 64 W 8 1 2704 W 14 36916 P 04/09-23 86 30 29 66 W 8 1 2019 W 12 23652 P 04/10-00 45 0 29 67 SW 9 9 2 1 W20 1334 W 9 10389 P 04/10-01 45 0 29 69 SW 9 1 1070 W 9 8248 P 04/10-02 45 0 28 71 W 9 1 806 W 8 6107 P 04/10-03 45 0 27 73 W 9 9 2 1 NW20 541 W 8 3965 P 04/10-04 45 0 27 75 W 9 1 452 W 8 3341 P 04/10-05 45 0 26 76 W 8 1 362 W 9 2716 P 04/10-06 47 0 25 78 W 8 8 2 1 W22 273 W 9 2092 P 04/10-07 47 0 26 74 W 7 1 387 W 8 2520 P 04/10-08 47 0 29 66 SW 5 1 525 W 7 3133 P 04/10-09 47 0 33 54 SW 3 3 2 1 W21 663 W 7 3747 P 04/10-10 47 0 38 43 SW 3 1 2593 W 8 20237 P 04/10-11 47 0 42 35 S 3 1 4524 SW 8 36727 P 04/10-12 46 0 46 31 S 5 5 2 1 W24 6454 SW 9 53217 F 04/10-13 46 0 49 27 S 3 1 7239 SW 10 68256 G 04/10-14 46 0 50 25 SW 3 1 8024 SW 12 83295 G 04/10-15 46 0 51 24 SW 5 5 2 1 W24 8809 SW 13 98334 G 04/10-16 46 0 51 24 SW 5 1 7851 SW 15 97205 G 04/10-17 46 0 50 26 S 6 1 6894 SW 16 96076 G 04/10-18 46 0 48 29 S 8 8 2 1 SW24 5936 SW 18 94947 G 04/10-19 46 0 46 32 S 9 1 4400 SW 17 68933 G 04/10-20 46 0 43 38 S 10 1 2865 S 16 42919 F 04/10-21 46 0 38 46 S 12 12 2 1 SW25 1329 S 15 16906 P 04/10-22 46 0 36 52 S 12 1 1045 S 15 13295 P 04/10-23 46 0 34 58 SW 12 1 761 SW 15 9685 P 04/11-00 67 0 33 62 SW 12 12 2 1 SW20 477 SW 15 6074 P 04/11-01 67 0 31 66 SW 10 1 391 SW 14 4884 P 04/11-02 67 0 30 69 SW 9 1 305 SW 14 3694 P 04/11-03 67 0 30 71 SW 9 9 2 1 SW17 220 SW 13 2504 P 04/11-04 67 0 29 72 SW 10 1 242 SW 15 3160 P 04/11-05 67 0 30 71 SW 12 1 264 SW 16 3815 P 04/11-06 85 0 30 69 SW 12 12 2 1 S30 287 SW 18 4471 P 04/11-07 85 0 31 67 SW 9 1 980 SW 17 12745 P 04/11-08 85 0 33 61 S 7 1 1673 S 15 21019 P 04/11-09 85 0 37 53 S 6 6 2 1 SW48 2367 S 14 29293 P 04/11-10 85 0 41 44 S 7 1 3705 S 18 68698 G 04/11-11 85 0 45 38 S 7 1 5043 S 23 108103 V 04/11-12 65 20 48 32 S 7 7 2 1 S64 6380 S 26 147509 V 04/11-13 65 20 51 28 S 7 1 7395 S 32 218872 E 04/11-14 65 20 52 26 S 7 1 8410 S 38 290236 E 04/11-15 65 20 53 24 S 7 7 2 1 S66 9424 S 44 361600 E 04/11-16 65 20 53 23 SW 7 1 8775 SW 38 299585 E 04/11-17 65 20 51 24 SW 7 1 8125 SW 32 237569 E 04/11-18 73 33 48 27 SW 7 7 2 1 SW47 7476 SW 26 175554 E 04/11-19 73 33 46 29 SW 7 1 6114 SW 24 135373 V 04/11-20 73 33 42 35 SW 7 1 4752 SW 22 95192 G 04/11-21 73 33 37 44 W 7 7 2 1 SW45 3390 SW 18 55011 F 04/11-22 73 33 34 53 W 6 1 2365 SW 15 37464 P 04/11-23 73 33 32 59 W 6 1 1340 W 12 19916 P 04/12-00 73 33 30 64 W 6 6 2 1 SW58 315 W 9 2368 P 04/12-01 73 33 29 69 W 6 1 278 W 8 1900 P 04/12-02 73 33 28 73 W 6 1 241 W 7 1432 P 04/12-03 73 33 27 75 W 6 6 2 1 SW35 205 W 6 964 P 04/12-04 73 33 26 77 W 6 1 223 W 6 1063 P 04/12-05 73 33 27 76 W 6 1 242 NW 6 1161 P 04/12-06 72 27 27 69 W 6 6 2 1 S15 260 NW 6 1260 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...GIMMESTAD REQUESTED BY...KRIS HEINY REASON FOR REQUEST...PRESCRIBED .TAG 20090409.SHADE.01/BOU