FNUS75 KBOU 241508 FWSBOU SPOT FORECAST FOR GREEN RIDGE PILE BURN...USFS NATIONAL WEATHER SERVICE DENVER CO 808 AM MST TUE NOV 24 2009 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...STRONG HIGH PRESSURE AT THE SURFACE AND ALOFT HAS BUILT OVER COLORADO IN THE PAST 24 HOURS. THE AIRMASS IS DRY AND STABLE. HOWEVER...STRONG WARMING AT MID LEVELS IS GOING TO LIMIT THE DEPTH OF MIXING LAYERS THROUGH THE AFTERNOON. LOW MIXING HEIGHTS COUPLED WITH MODEST NORTHWESTERLY FLOW ALOFT WILL KEEP SMOKE DISPERSAL IN THE POOR CATEGORY ALL DAY. SLIGHTLY WARMER SURFACE TEMPERATURES ON WEDNESDAY MAY ALLOW FOR SOME BETTER SMOKE DISPERSION. ...THUNDERSTORMS IMPLY STRONG...GUSTY AND ERRATIC WINDS... .TODAY... SKY/WEATHER.........PARTLY CLOUDY(35-45%) UNTIL 0800...THEN MOSTLY SUNNY UNTIL 1700...THEN PARTLY CLOUDY(40-50%). MAX TEMPERATURE.....25-29. MIN HUMIDITY........47%. 20-FOOT WINDS.......UPSLOPE/UPVALLEY 4-10 MPH UNTIL 0900...THEN SOUTHWEST 8-13 MPH UNTIL 1500...THEN UPSLOPE/UPVALLEY 4-10 MPH. TRANSPORT WINDS.....WEST 8-12 MPH. MIXING HEIGHT.......1200-2200 FT AGL. SMOKE DISPERSAL.....POOR. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY(40-50%). MIN TEMPERATURE.....7-11. MAX HUMIDITY........87%. 20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 2-8 MPH. TRANSPORT WINDS.....SOUTHWEST 4-8 MPH. MIXING HEIGHT.......200-800 FT AGL. SMOKE DISPERSAL.....POOR. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .WEDNESDAY... SKY/WEATHER.........PARTLY CLOUDY(40-50%) UNTIL 1100...THEN MOSTLY SUNNY. MAX TEMPERATURE.....30-34. MIN HUMIDITY........46%. 20-FOOT WINDS.......UPSLOPE/UPVALLEY 4-10 MPH UNTIL 1200...THEN WEST 8-12 MPH. TRANSPORT WINDS.....WEST 5-16 MPH. MIXING HEIGHT.......1800-2800 FT AGL. SMOKE DISPERSAL.....POOR UNTIL 1300...THEN FAIR UNTIL 1500...THEN POOR. HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .FORECAST DAYS 3 THROUGH 5... .THANKSGIVING DAY...MOSTLY CLEAR. LOWS AROUND 16. HIGHS IN THE LOWER 40S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. .FRIDAY...MOSTLY CLEAR. LOWS AROUND 17. HIGHS IN THE LOWER 40S. SOUTHWEST WINDS AROUND 10 MPH WITH GUSTS TO AROUND 20 MPH. .SATURDAY...MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW AFTER 0600. LOWS AROUND 13. HIGHS IN THE LOWER 30S. WEST WINDS AROUND 12 MPH WITH GUSTS TO AROUND 25 MPH. EXPERIMENTAL FIRE WEATHER TABLE FOR GREEN RIDGE PILE BURN. +++ 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 11/24-07 39 0 5 95 SW 6 1 539 SW 7 3421 P 11/24-08 7 0 9 85 SW 6 6 4 1 N44 664 SW 8 4331 P 11/24-09 7 0 14 72 SW 7 1 1112 SW 9 9344 P 11/24-10 7 0 19 62 SW 7 1 1560 W 10 14357 P 11/24-11 23 0 22 56 SW 8 8 3 1 N35 2008 W 12 19370 P 11/24-12 23 0 24 53 SW 8 1 2035 W 10 18868 P 11/24-13 23 0 25 50 W 8 1 2063 W 10 18367 P 11/24-14 23 0 26 48 W 8 8 3 1 NW30 2091 W 10 17865 P 11/24-15 23 0 26 47 SW 7 1 1733 W 9 13796 P 11/24-16 23 0 24 48 SW 6 1 1376 SW 8 9727 P 11/24-17 45 0 21 53 SW 5 5 3 1 NW28 1018 SW 7 5658 P 11/24-18 45 0 19 60 SW 5 1 815 SW 7 4539 P 11/24-19 45 0 17 66 S 6 1 613 SW 7 3420 P 11/24-20 45 0 16 69 S 6 6 4 1 NW33 410 SW 7 2301 P 11/24-21 45 0 15 71 S 6 1 363 SW 6 2002 P 11/24-22 45 0 14 72 S 6 1 317 SW 6 1703 P 11/24-23 49 0 14 73 SW 6 6 3 1 NW35 270 SW 6 1404 P 11/25-00 49 0 13 75 SW 6 1 250 SW 6 1302 P 11/25-01 49 0 12 77 S 6 1 230 SW 6 1200 P 11/25-02 49 0 12 79 S 6 6 2 1 NW36 211 SW 6 1098 P 11/25-03 49 0 11 81 S 6 1 199 SW 6 1030 P 11/25-04 49 0 11 82 SW 6 1 186 SW 6 962 P 11/25-05 43 0 10 85 SW 6 6 3 1 NW45 174 SW 6 894 P 11/25-06 43 0 10 81 SW 5 1 228 SW 6 1111 P 11/25-07 43 0 10 85 SW 5 1 265 SW 6 1243 P 11/25-08 43 0 14 81 SW 5 5 2 1 NW53 301 SW 6 1375 P 11/25-09 43 0 21 71 SW 5 1 1009 SW 8 10822 P 11/25-10 43 0 25 63 W 6 1 1718 W 12 20269 P 11/25-11 27 0 28 58 W 7 7 2 1 NW53 2426 W 15 29716 P 11/25-12 27 0 30 54 W 8 1 2637 W 15 33160 P 11/25-13 27 0 30 51 W 9 1 2848 NW 15 36603 P 11/25-14 27 0 31 47 W 9 9 2 1 NW49 3059 NW 16 40046 F 11/25-15 27 0 31 46 W 8 1 2457 NW 13 29378 P 11/25-16 27 0 29 46 W 7 1 1856 W 10 18711 P 11/25-17 27 0 27 50 W 5 5 2 1 NW45 1254 W 8 8043 P 11/25-18 27 0 24 54 SW 5 1 940 W 7 5783 P 11/25-19 27 0 22 57 SW 5 1 627 SW 6 3522 P 11/25-20 27 0 21 59 S 5 5 2 1 NW37 313 SW 5 1261 P 11/25-21 27 0 21 60 S 5 1 283 SW 5 1144 P 11/25-22 27 0 20 60 S 5 1 254 SW 5 1027 P 11/25-23 27 0 19 61 S 5 5 2 1 NW36 224 SW 5 911 P 11/26-00 27 0 19 62 S 5 1 210 SW 5 869 P 11/26-01 27 0 18 64 S 5 1 197 SW 5 828 P 11/26-02 27 0 17 65 S 5 5 2 1 NW32 183 SW 5 786 P 11/26-03 27 0 17 66 S 5 1 176 S 5 721 P 11/26-04 27 0 16 66 S 5 1 170 S 5 656 P 11/26-05 19 0 16 68 S 5 5 2 1 NW37 163 S 5 591 P 11/26-06 19 0 15 71 W 7 1 184 SW 5 753 P 11/26-07 19 0 16 71 W 6 1 204 SW 6 916 P 11/26-08 19 0 20 64 W 6 6 3 1 NW32 224 W 6 1079 P 11/26-09 19 0 26 53 W 6 1 883 W 8 7857 P 11/26-10 19 0 32 44 W 5 1 1540 W 9 14633 P 11/26-11 19 0 35 40 W 5 5 3 1 N24 2199 W 12 21410 P 11/26-12 19 0 38 36 W 5 1 2460 W 12 25321 P 11/26-13 19 0 39 34 W 5 1 2721 W 13 29232 P 11/26-14 19 0 40 33 W 5 5 3 1 NW21 2982 W 13 33143 P 11/26-15 19 0 39 33 W 5 1 2423 W 12 25168 P 11/26-16 19 0 38 34 W 5 1 1863 W 10 17192 P 11/26-17 15 0 34 38 W 3 3 3 1 NW21 1303 SW 9 9217 P 11/26-18 15 0 31 42 W 5 1 964 SW 8 6678 P 11/26-19 15 0 29 45 W 6 1 625 SW 7 4138 P 11/26-20 15 0 28 46 W 6 6 3 1 NW16 286 SW 7 1599 P 11/26-21 15 0 27 47 SW 7 1 258 SW 8 1572 P 11/26-22 15 0 26 47 SW 7 1 230 SW 8 1544 P 11/26-23 15 0 25 48 SW 8 8 4 1 W12 202 SW 9 1516 P 11/27-00 15 0 24 48 SW 8 1 189 SW 9 1436 P 11/27-01 15 0 24 48 SW 8 1 177 SW 9 1357 P 11/27-02 15 0 23 49 SW 8 8 4 1 W18 166 SW 9 1278 P 11/27-03 15 0 22 49 SW 8 1 162 SW 9 1254 P 11/27-04 15 0 22 50 SW 8 1 159 SW 9 1232 P 11/27-05 15 0 21 52 SW 8 8 5 1 W26 157 SW 9 1209 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...CASEY CHEESBROUGH REASON FOR REQUEST...PRESCRIBED .TAG 20091124.GREEN.01/BOU