FNUS75 KBOU 241842 FWSBOU SPOT FORECAST FOR COLP RX...USFS NATIONAL WEATHER SERVICE DENVER CO 1240 PM MDT FRI APR 24 2009 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...A COLD FRONT MOVED ACROSS THE AREA THIS MORNING... RESULTING IN SOMEWHAT COOLER TEMPERATURES AND HIGHER HUMIDITIES. THE NORTHEAST TO EASTERLY WINDS BEHIND THE FRONT ARE EXPECTED TO REMAIN IN PLACE THROUGH THE REST OF THE AFTERNOON. MIXING WILL BE SOMEWHAT LIMITED BY THE COOLER TEMPERATURES...BUT SHOULD STILL BE IN THE GOOD CATEGORY FOR MOST OF THE AFTERNOON AS THE PLUME LIFTS WESTWARD AND THEN GRADUALLY TURNS EASTWARD A COUPLE THOUSAND FEET ABOVE THE GROUND DUE TO THE WESTERLY FLOW ALOFT. ONLY POOR TO FAIR SMOKE DISPERSION CAN BE EXPECTED FOR TONIGHT AND SATURDAY...ALONG WITH HIGHER HUMIDITIES...AS LOW LEVEL COOL AIR SETTLES ACROSS THE HIGH PLAINS. HOWEVER...SCATTERED RAIN SHOWERS CAN ALSO BE EXPECTED AS A MOIST AND UNSTABLE AIRMASS ALOFT MOVES OVER THE REGION. ...THUNDERSTORMS IMPLY STRONG...GUSTY AND ERRATIC WINDS... .REST OF TODAY... SKY/WEATHER.........PARTLY CLOUDY(50-60%). MAX TEMPERATURE.....66-68. MIN HUMIDITY........24-26%. 20-FOOT WINDS.......EAST 7-13 MPH. TRANSPORT WINDS.....EAST 5-10 MPH BECOMING WEST 16-24 MPH 2000-3000 FT AGL. MIXING HEIGHT.......5000-6000 FT AGL. SMOKE DISPERSAL.....GOOD. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY(50-60%) UNTIL 2400...THEN MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS AND ISOLATED THUNDERSTORMS UNTIL 2400...THEN CHANCE OF RAIN SHOWERS. MIN TEMPERATURE.....36-39. MAX HUMIDITY........80-88%. 20-FOOT WINDS.......EAST/NORTHEAST 6-12 MPH. TRANSPORT WINDS.....SOUTHWEST 8-16 MPH. MIXING HEIGHT.......3000-4000 FT AGL. SMOKE DISPERSAL.....GOOD UNTIL 1900...THEN FAIR UNTIL 2000...THEN POOR UNTIL 2300...THEN FAIR. HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .SATURDAY... SKY/WEATHER.........CLOUDY. PATCHY FOG UNTIL 1200. CHANCE OF RAIN UNTIL 1200...THEN CHANCE OF RAIN SHOWERS. MAX TEMPERATURE.....53. MIN HUMIDITY........52%. 20-FOOT WINDS.......EAST 4-10 MPH. TRANSPORT WINDS.....SOUTH 9-20 MPH. MIXING HEIGHT.......4000-5000 FT AGL. SMOKE DISPERSAL.....FAIR UNTIL 0900...THEN POOR UNTIL 1100...THEN FAIR UNTIL 1300...THEN GOOD. HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .FORECAST DAYS 3 THROUGH 5... .SUNDAY...MOSTLY CLOUDY. CHANCE OF RAIN UNTIL 0600...THEN CHANCE OF RAIN SHOWERS UNTIL 1200...THEN CHANCE OF THUNDERSTORMS. LOWS AROUND 40. HIGHS IN THE UPPER 50S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. .MONDAY...MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN UNTIL 1200...THEN CHANCE OF THUNDERSTORMS UNTIL 1800...THEN CHANCE OF RAIN SHOWERS. LOWS IN THE UPPER 30S. HIGHS IN THE MID 60S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. .TUESDAY...MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS UNTIL 1200...THEN CHANCE OF RAIN SHOWERS...SLIGHT CHANCE OF THUNDERSTORMS AND SNOW SHOWERS. LOWS AROUND 40. HIGHS IN THE MID 60S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. EXPERIMENTAL FIRE WEATHER TABLE FOR COLP RX. +++ 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 04/24-12 59 0 62 43 NE 7 7 4 1 SW32 3702 W 22 69212 G 04/24-13 59 0 63 39 E 10 1 4477 W 21 82278 G 04/24-14 59 5 65 37 E 13 1 5251 SW 21 95344 G 04/24-15 59 5 65 33 SE 13 18 3 1 W38 6026 SW 21 108409 V 04/24-16 59 5 66 31 E 10 1 5787 W 20 98490 G 04/24-17 59 5 66 29 E 8 1 5548 W 18 88571 G 04/24-18 58 23 64 30 NE 7 7 3 2 W33 5310 W 17 78651 G 04/24-19 58 23 62 32 NE 8 2 5284 SW 13 57114 F 04/24-20 58 23 60 35 NE 10 2 5259 S 8 35576 P 04/24-21 58 23 58 37 NE 12 17 2 2 W40 5234 S 3 14038 P 04/24-22 58 23 56 40 NE 9 2 4948 S 7 27348 P 04/24-23 58 23 54 43 E 7 2 4662 SW 10 40657 F 04/25-00 77 37 51 47 SE 5 5 2 1 W46 4376 SW 15 53966 F 04/25-01 77 37 50 51 SE 5 1 4159 SW 15 53759 F 04/25-02 77 37 48 54 SE 5 1 3941 SW 16 53552 F 04/25-03 73 37 47 56 SE 5 5 2 1 W58 3724 SW 17 53344 F 04/25-04 73 37 47 58 E 6 1 3709 W 17 52339 F 04/25-05 73 37 46 58 E 6 1 3694 W 16 51333 F 04/25-06 82 36 47 57 E 6 6 2 1 W51 3678 W 16 50328 F 04/25-07 82 36 48 56 NE 5 1 3776 W 14 44728 F 04/25-08 82 36 47 62 NE 5 1 3874 SW 13 39128 P 04/25-09 94 36 48 61 E 6 6 2 1 SW33 3973 SW 10 33528 P 04/25-10 94 36 49 57 E 7 1 4225 SW 12 43293 F 04/25-11 94 36 50 54 E 7 1 4478 S 14 53059 F 04/25-12 92 53 51 52 E 8 8 2 1 SW33 4731 S 16 62824 G 04/25-13 92 53 52 53 E 7 1 4831 S 16 68576 G 04/25-14 92 53 52 56 E 7 1 4931 S 17 74326 G 04/25-15 92 53 52 58 E 6 6 2 1 SW35 5032 S 18 80077 G 04/25-16 92 53 52 57 E 6 1 4950 S 20 79818 G 04/25-17 92 53 52 55 E 6 1 4868 S 20 79560 G 04/25-18 92 53 51 56 E 6 6 2 1 SW43 4786 SW 20 79301 G 04/25-19 92 53 50 60 NE 5 1 4245 SW 15 54426 F 04/25-20 92 53 48 68 NE 5 1 3685 SW 13 40846 F 04/25-21 92 53 46 76 NE 5 5 2 1 SW26 3126 SW 10 27265 P 04/25-22 92 53 44 78 N 5 1 2862 SW 12 26088 P 04/25-23 92 53 43 78 N 5 1 2598 SW 12 24911 P 04/26-00 91 38 42 77 NW 3 3 2 1 SW31 2334 S 13 23734 P 04/26-01 91 38 42 79 NW 3 1 2208 SW 13 22722 P 04/26-02 91 38 41 80 N 3 1 2081 SW 13 21710 P 04/26-03 91 38 41 80 N 3 3 2 1 SW44 1955 SW 13 20698 P 04/26-04 91 38 40 76 N 3 1 1699 SW 13 17697 P 04/26-05 91 38 40 71 NW 5 1 1443 SW 13 14695 P 04/26-06 86 38 41 68 NW 3 3 2 1 SW43 1187 W 12 11694 P 04/26-07 86 38 41 65 NW 7 1 1593 W 12 15293 P 04/26-08 86 38 44 59 W 12 1 1998 W 12 18893 P 04/26-09 86 38 48 53 W 12 12 2 1 SW25 2404 W 12 22492 P 04/26-10 86 38 51 47 W 13 1 3244 W 10 26772 P 04/26-11 86 38 53 44 W 14 1 4083 SW 9 31052 P 04/26-12 75 28 55 41 W 15 15 2 4 SW25 4923 SW 8 35332 P 04/26-13 75 28 56 39 W 14 4 5306 SW 8 34131 P 04/26-14 75 28 57 37 W 12 4 5690 SW 7 32929 P 04/26-15 75 28 58 37 W 10 10 2 4 SW29 6074 SW 6 31728 P 04/26-16 75 28 58 39 NW 10 4 6078 SW 9 43698 F 04/26-17 75 28 57 43 N 7 4 6082 W 10 55668 F 04/26-18 65 28 55 49 NE 2 2 2 4 S 8 6086 W 13 67639 G 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...JAY STALNACKER REASON FOR REQUEST...PRESCRIBED .TAG 20090424.COLPR.01/BOU