FNUS75 KBOU 181625 AAA FWSBOU SPOT FORECAST FOR GREEN RIDGE PILE BURN...USFS NATIONAL WEATHER SERVICE DENVER CO 924 AM MST WED NOV 18 2009 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...HIGH PRESSURE WILL BE OVER THE AREA TODAY...WITH LIGHT WINDS ALOFT. WITH THE PRESENCE OF AN INVERSION AROUND 4500 FEET AGL...SMOKE DISPERSION WILL BE LIMITED THIS AFTERNOON. A WEAK WEATHER DISTURBANCE WILL MOVE ACROSS THE AREA THIS EVENING... PROVIDING AN INCREASE IN HIGH LEVEL CLOUDS. GIVEN THE WIDE RANGE IN ELEVATION ACROSS THE SITE...THERE WILL BE A WIDE RANGE IN TEMPERATURE AND HUMIDITY TODAY AND TONIGHT. ON THURSDAY...COOLER AIR WILL BE OVER THE AREA...WITH THE MID LEVEL INVERSION PERSISTING. THIS WILL AGAIN LIMIT THE AFTERNOON SMOKE DISPERSION. ALTHOUGH THERE WILL BE SOME INCREASE IN WIND ABOVE THE INVERSION...TRANSPORT WINDS BELOW THE INVERSION WILL BE LIGHT. ANOTHER WEATHER DISTURBANCE WILL MOVE ACROSS THE AREA SATURDAY... BRING COLDER AIR ALONG WITH A CHANCE FOR SNOW THROUGH THE WEEKEND. BREEZY CONDITIONS WILL OCCUR SATURDAY AS THE DISTURBANCE MOVES ACROSS THE AREA. ...THUNDERSTORMS IMPLY STRONG...GUSTY AND ERRATIC WINDS... .TODAY... SKY/WEATHER.........SUNNY UNTIL 1700...THEN PARTLY CLOUDY(40-50%). MAX TEMPERATURE.....44-50...EXCEPT 39-44 ABOVE 9000 FEET. MIN HUMIDITY........17-23%...EXCEPT 23-30% ABOVE 9000 FEET. 20-FOOT WINDS.......SOUTH 5-9 MPH. TRANSPORT WINDS.....SOUTHWEST 5-16 MPH. MIXING HEIGHT.......1000-2000 FT AGL...INCREASING TO 3400-4400 FT AGL BY 1100. SMOKE DISPERSAL.....POOR UNTIL 1100...THEN FAIR. POOR AFTER 1600. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY(40-50%). MIN TEMPERATURE.....10-17...EXCEPT 17-25 ABOVE 9000 FEET. MAX HUMIDITY........66-73%...EXCEPT 57-66% ABOVE 9000 FEET. 20-FOOT WINDS.......SOUTHWEST 8-9 MPH. TRANSPORT WINDS.....SOUTHWEST 4-8 MPH. MIXING HEIGHT.......1200-2000 FT AGL...LOWERING TO 200 FT AGL AFTER 2000. SMOKE DISPERSAL.....POOR. HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .THURSDAY... SKY/WEATHER.........PARTLY CLOUDY(35-45%). MAX TEMPERATURE.....32-37. MIN HUMIDITY........39-46%. 20-FOOT WINDS.......SOUTHWEST 5-9 MPH. TRANSPORT WINDS.....WEST 4-12 MPH. MIXING HEIGHT.......2200-3200 FT AGL. SMOKE DISPERSAL.....POOR UNTIL 1400...THEN FAIR. POOR AFTER 1500. POOR. HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .FORECAST DAYS 3 THROUGH 5... .FRIDAY...PARTLY CLOUDY. LOWS AROUND 11. HIGHS IN THE MID 30S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. .SATURDAY...MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS AFTER 0600...THEN CHANCE OF SNOW AFTER 1800. LOWS AROUND 11. HIGHS IN THE UPPER 30S. SOUTHWEST WINDS AROUND 14 MPH WITH GUSTS TO AROUND 30 MPH. .SUNDAY...MOSTLY CLOUDY. CHANCE OF SNOW UNTIL 0600...THEN SLIGHT CHANCE OF SNOW. LOWS AROUND 13. HIGHS IN THE UPPER 20S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 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 11/18-08 0 0 24 41 S 5 5 5 1 SW 7 170 S 5 664 P 11/18-09 0 0 31 29 S 6 1 1277 SW 7 11701 P 11/18-10 0 0 39 22 S 6 1 2385 SW 9 22738 P 11/18-11 0 0 43 18 S 7 7 5 1 S12 3492 W 12 33775 P 11/18-12 0 0 46 17 S 6 1 4008 W 12 40766 F 11/18-13 0 0 47 17 S 6 1 4523 W 13 47756 F 11/18-14 0 0 47 17 SW 5 5 5 1 SW17 5039 W 13 54747 F 11/18-15 0 0 46 18 SW 5 1 4193 W 13 44883 F 11/18-16 0 0 44 21 SW 5 1 3346 W 13 35019 P 11/18-17 44 0 37 27 SW 5 5 4 1 SW17 2499 W 12 25155 P 11/18-18 44 0 31 35 SW 5 1 1759 W 9 17110 P 11/18-19 44 0 27 41 SW 5 1 1019 SW 7 9066 P 11/18-20 44 0 25 44 SW 5 5 3 1 W16 279 SW 5 1021 P 11/18-21 44 0 23 47 SW 5 1 245 SW 5 924 P 11/18-22 44 0 22 49 SW 5 1 210 W 5 827 P 11/18-23 44 0 21 50 SW 5 5 3 1 W18 176 W 6 730 P 11/19-00 44 0 19 50 SW 5 1 167 SW 6 706 P 11/19-01 44 0 18 50 SW 5 1 158 SW 6 682 P 11/19-02 44 0 17 50 SW 5 5 2 1 W18 149 SW 6 658 P 11/19-03 44 0 16 50 SW 5 1 154 SW 5 611 P 11/19-04 44 0 15 51 SW 5 1 158 W 5 564 P 11/19-05 47 5 12 59 SW 3 3 2 1 W22 163 W 5 517 P 11/19-06 47 5 12 62 SW 5 1 172 W 5 592 P 11/19-07 47 5 12 67 SW 5 1 181 W 5 666 P 11/19-08 47 5 12 71 SW 5 5 2 1 W21 190 W 5 740 P 11/19-09 47 5 17 68 SW 5 1 838 W 6 5063 P 11/19-10 47 5 21 64 W 5 1 1486 W 7 9385 P 11/19-11 36 5 27 57 W 5 5 2 1 W21 2134 W 8 13707 P 11/19-12 36 5 30 51 W 6 1 2699 W 9 21245 P 11/19-13 36 5 32 47 W 7 1 3265 W 10 28783 P 11/19-14 36 5 31 47 W 7 7 2 1 NW18 3830 W 12 36321 P 11/19-15 36 5 31 46 W 7 1 3020 W 10 27376 P 11/19-16 36 5 30 48 SW 6 1 2210 W 9 18431 P 11/19-17 9 0 26 54 SW 5 5 2 1 N31 1401 W 8 9487 P 11/19-18 9 0 21 63 SW 3 1 1002 W 6 6527 P 11/19-19 9 0 17 69 S 3 1 603 SW 5 3566 P 11/19-20 9 0 16 70 S 3 3 4 1 N28 204 SW 3 606 P 11/19-21 9 0 13 73 S 3 1 186 SW 3 571 P 11/19-22 9 0 12 74 S 5 1 166 SW 3 536 P 11/19-23 9 0 11 73 S 5 5 4 1 NW23 148 S 5 501 P 11/20-00 9 0 11 74 S 5 1 149 S 5 529 P 11/20-01 9 0 12 67 S 5 1 151 S 5 558 P 11/20-02 9 0 12 66 S 5 5 3 1 NW25 153 S 5 587 P 11/20-03 9 0 12 64 S 5 1 149 S 5 588 P 11/20-04 9 0 12 61 S 6 1 146 S 5 589 P 11/20-05 9 0 11 61 S 6 6 2 1 NW31 143 S 6 591 P 11/20-06 9 0 11 62 S 6 1 145 S 5 569 P 11/20-07 9 0 11 64 S 5 1 147 S 5 548 P 11/20-08 9 0 12 66 S 5 5 3 1 NW32 150 S 5 526 P 11/20-09 9 0 17 56 S 5 1 455 SW 5 2394 P 11/20-10 9 0 23 44 S 6 1 761 SW 6 4262 P 11/20-11 37 0 30 35 SW 6 6 3 1 NW25 1067 SW 7 6130 P 11/20-12 37 0 34 29 SW 6 1 1318 SW 7 8093 P 11/20-13 37 0 36 26 S 6 1 1569 SW 7 10056 P 11/20-14 37 0 36 26 S 6 6 4 1 NW18 1820 SW 8 12019 P 11/20-15 37 0 35 26 S 6 1 1429 SW 8 9513 P 11/20-16 37 0 34 27 S 7 1 1039 S 8 7006 P 11/20-17 62 0 29 33 S 7 7 5 1 W20 648 S 8 4500 P 11/20-18 62 0 23 42 S 7 1 475 S 8 3298 P 11/20-19 62 0 19 52 S 8 1 301 S 8 2097 P 11/20-20 62 0 16 59 S 8 8 5 1 W25 128 S 8 895 P 11/20-21 62 0 13 69 S 9 1 126 S 9 954 P 11/20-22 62 0 12 77 S 9 1 125 S 9 1012 P 11/20-23 62 0 11 81 S 10 17 5 1 SW36 123 S 10 1070 P 11/21-00 62 0 10 86 S 10 1 124 S 10 1164 P 11/21-01 62 0 12 81 S 12 1 124 S 12 1259 P 11/21-02 62 0 12 80 S 12 20 4 1 SW38 125 S 13 1353 P 11/21-03 62 0 12 81 S 12 1 125 S 13 1344 P 11/21-04 62 0 12 80 S 12 1 126 S 13 1335 P 11/21-05 77 20 12 82 S 12 18 4 1 SW53 126 SW 13 1325 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...LESZCYNSKI..WFO BOULDER REQUESTED BY...CASEY CHEESBROUGH REASON FOR REQUEST...PRESCRIBED .TAG 20091118.GREEN.02/BOU