FNUS75 KBOU 091522 FWSBOU SPOT FORECAST FOR RALSTON ROOST PILES...USFS NATIONAL WEATHER SERVICE DENVER CO 822 AM MST WED FEB 9 2011 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...A MUCH DRIER AIRMASS HAS MOVED INTO THE REGION. AN UPPER LEVEL RIDGE IS BUILDING OVER THE STATE WITH LIGHT NORTHWEST FLOW ALOFT. SURFACE HIGH PRESSURE IS ALSO IN PLACE WITH LIGHT PRESSURE GRADIENTS ACROSS NORTHEAST COLORADO. WINDS WILL BE LIGHT DURING DAYTIME HOURS WITH ENHANCED DRAINAGE PATTERNS DURING THE EVENING AND OVERNIGHT HOURS. TEMPERATURES AT MID LEVELS WILL BE WARMING AS THE UPPER RIDGE BUILDS IN...WHICH WILL LIMIT THE AMOUNT OF VERTICAL MIXING TODAY. ...THUNDERSTORMS IMPLY STRONG...GUSTY AND ERRATIC WINDS... .REST OF TODAY... SKY/WEATHER.........SUNNY. MAX TEMPERATURE.....17-22. MIN HUMIDITY........36-44%. 20-FOOT WINDS.......WEST WINDS 6-12 MPH. TRANSPORT WINDS.....NORTHWEST 10-18 MPH. MIXING HEIGHT.......BELOW 1000 FT AGL UNTIL 0900...THEN 2500-3000 FT AGL. SMOKE DISPERSAL.....POOR UNTIL 1200...THEN FAIR. HAINES INDEX........4 LOW. .TONIGHT... SKY/WEATHER.........MOSTLY CLEAR. MIN TEMPERATURE.....ZERO TO 5 BELOW. MAX HUMIDITY........82-90%. 20-FOOT WINDS.......WEST WINDS 10-16 MPH. TRANSPORT WINDS.....WEST 14-22 MPH. MIXING HEIGHT.......1000-1200 FT AGL UNTIL 2000...THEN BELOW 1000 FT AGL. SMOKE DISPERSAL.....POOR. HAINES INDEX........4 LOW. .THURSDAY... SKY/WEATHER.........PARTLY CLOUDY(30-40%). MAX TEMPERATURE.....24-30. MIN HUMIDITY........36-44%. 20-FOOT WINDS.......BREEZY. WEST WINDS 16-24 MPH WITH GUSTS TO 35 MPH. TRANSPORT WINDS.....NORTHWEST 18-28 MPH. MIXING HEIGHT.......BELOW 1000 FT AGL UNTIL 0900...THEN 1800-2800 FT AGL. SMOKE DISPERSAL.....POOR UNTIL 1200. FAIR AFTER 1400. HAINES INDEX........3 VERY LOW. .FORECAST DAYS 3 THROUGH 5... .FRIDAY...PARTLY CLOUDY. LOWS AROUND 15. HIGHS IN THE LOWER 30S. WEST WINDS AROUND 23 MPH WITH GUSTS TO 50 MPH. .SATURDAY...PARTLY CLOUDY. LOWS AROUND 20. HIGHS AROUND 40. WEST WINDS AROUND 19 MPH WITH GUSTS TO 40 MPH. .SUNDAY...MOSTLY CLEAR. LOWS IN THE LOWER 20S. HIGHS IN THE MID 40S. WEST WINDS AROUND 15 MPH WITH GUSTS TO 30 MPH. FIRE WEATHER TABLE FOR RALSTON ROOST PILES. +++ 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 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 02/09-08 0 0 -4 70 W 7 7 2 1 N25 326 W 8 2160 P 02/09-09 0 0 1 60 W 6 1 1001 W 10 12469 P 02/09-10 0 0 6 55 W 5 1 1676 NW 14 22779 P 02/09-11 4 0 10 49 NW 5 5 4 1 N38 2352 NW 16 33088 P 02/09-12 4 0 14 45 NW 6 1 2703 NW 16 37496 P 02/09-13 4 0 16 41 NW 7 1 3054 NW 16 41904 F 02/09-14 4 0 17 40 W 9 15 4 1 N35 3405 NW 16 46312 F 02/09-15 4 0 17 42 W 12 1 2786 NW 18 41684 F 02/09-16 4 0 15 47 W 13 1 2168 NW 21 37055 P 02/09-17 7 2 13 53 W 15 24 4 1 N37 1550 NW 24 32427 P 02/09-18 7 2 10 58 W 17 1 1295 NW 26 28536 P 02/09-19 7 2 8 61 W 18 1 1041 W 29 24646 P 02/09-20 7 2 7 63 W 20 31 4 1 N38 786 W 30 20755 P 02/09-21 7 2 5 67 W 20 1 608 W 28 15381 P 02/09-22 7 2 3 69 W 18 1 431 W 24 10008 P 02/09-23 6 7 2 71 W 17 28 3 1 NW32 254 W 21 4634 P 02/10-00 6 7 1 74 W 17 1 264 W 22 4945 P 02/10-01 6 7 0 75 W 18 1 275 W 22 5256 P 02/10-02 35 7 -1 77 W 18 30 2 1 NW18 286 W 22 5568 P 02/10-03 35 7 -1 78 W 18 1 304 W 24 6336 P 02/10-04 35 7 -1 79 W 18 1 321 W 25 7105 P 02/10-05 48 7 -1 81 W 21 33 2 1 NW28 342 W 24 7228 P 02/10-06 48 7 -1 84 W 21 1 447 W 24 9206 P 02/10-07 48 7 1 81 W 21 1 552 W 23 11185 P 02/10-08 48 7 5 70 W 21 33 2 1 N30 657 W 23 13164 P 02/10-09 48 7 9 60 W 20 1 1187 W 21 19848 P 02/10-10 48 7 13 53 W 18 1 1718 W 20 26531 P 02/10-11 36 7 17 46 W 17 28 2 1 NW33 2248 W 17 33214 P 02/10-12 36 7 20 42 W 17 1 2445 W 20 41838 F 02/10-13 36 7 22 39 W 18 1 2641 NW 22 50462 F 02/10-14 36 7 23 39 W 20 31 3 1 N43 2838 NW 24 59086 F 02/10-15 36 7 23 40 W 22 1 2513 NW 25 53634 F 02/10-16 36 7 22 42 W 25 1 2189 NW 25 48181 F 02/10-17 37 7 21 44 W 26 43 3 1 N51 1864 NW 26 42729 F 02/10-18 37 7 20 47 W 25 1 1601 NW 25 35842 P 02/10-19 37 7 19 49 W 23 1 1337 NW 24 28954 P 02/10-20 37 7 18 50 W 21 33 3 1 NW39 1074 W 24 22067 P 02/10-21 37 7 16 53 W 21 1 995 W 24 20745 P 02/10-22 37 7 16 54 W 22 1 917 W 24 19422 P 02/10-23 37 7 15 56 W 23 37 3 1 NW38 839 W 25 18100 P 02/11-00 37 7 14 59 W 24 1 807 W 29 20031 P 02/11-01 37 7 14 61 W 25 1 775 W 33 21962 P 02/11-02 37 7 14 64 W 26 43 3 1 NW38 743 W 37 23893 P 02/11-03 37 7 13 67 W 29 1 742 W 38 24802 P 02/11-04 37 7 13 70 W 30 1 740 W 40 25711 P 02/11-05 34 5 13 74 W 31 49 3 1 NW36 739 NW 41 26621 P 02/11-06 34 5 13 79 W 29 1 823 NW 35 23917 P 02/11-07 34 5 15 81 W 26 1 907 NW 28 21214 P 02/11-08 34 5 17 78 W 23 37 2 1 NW48 992 NW 22 18511 P 02/11-09 34 5 20 74 W 21 1 1240 NW 21 22554 P 02/11-10 34 5 23 71 W 20 1 1489 NW 21 26598 P 02/11-11 34 5 26 67 W 18 30 2 1 N49 1737 NW 21 30642 P 02/11-12 34 5 28 64 W 17 1 1772 NW 20 29963 P 02/11-13 35 5 29 61 W 17 1 1806 NW 18 29284 P 02/11-14 35 5 30 59 W 17 28 2 1 N48 1841 NW 18 28604 P 02/11-15 35 5 30 60 W 18 1 1582 NW 22 27838 P 02/11-16 36 5 29 61 W 21 1 1324 W 25 27071 P 02/11-17 36 0 27 63 W 22 35 3 1 NW40 1065 W 29 26304 P 02/11-18 35 0 26 64 W 22 1 912 W 29 22905 P 02/11-19 34 0 24 64 W 23 1 760 W 30 19506 P 02/11-20 33 0 23 64 W 23 37 3 1 NW44 608 W 31 16107 P 02/11-21 32 0 22 63 W 24 1 514 W 30 13542 P 02/11-22 31 0 21 63 W 25 1 420 W 30 10978 P 02/11-23 30 0 21 61 W 26 43 2 1 NW45 326 W 30 8413 P 02/12-00 30 0 20 61 W 26 1 298 W 29 7462 P 02/12-01 30 0 19 61 W 25 1 270 W 28 6511 P 02/12-02 30 0 19 61 W 24 39 2 1 NW44 242 W 26 5560 P 02/12-03 30 0 19 61 W 23 1 228 W 25 5084 P 02/12-04 30 0 19 62 W 21 1 215 W 24 4607 P 02/12-05 50 0 19 63 W 20 31 3 1 NW39 201 W 24 4131 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 $$ DANKERS...WFO BOULDER REQUESTED BY...ALLEN GALAMORE REASON FOR REQUEST...PRESCRIBED .TAG 20110209.RALST.01/BOU