FNUS75 KBOU 280116 FWSBOU SPOT FORECAST FOR WALKER RANCH...USFS NATIONAL WEATHER SERVICE DENVER CO 715 PM MDT TUE OCT 27 2009 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...STRONG SOUTH-SOUTHWESTERLY FLOW ALOFT IS EXPECTED OVER THE BURN AREA WEDNESDAY AND WEDNESDAY EVENING AS AN UPPER TROUGH MOVES SLOWLY EASTWARD INTO COLORADO. THE TROUGH PUSHES OVER THE BURN AREA BY THURSDAY AFTERNOON. DEEP MOISTURE...UPSLOPE WINDS... AND LIFT FROM THE TROUGH WILL BRING HEAVY SNOW TO THE AREA LATER TONIGHT THROUGH WEDNESDAY EVENING...WITH SNOWFALL TAPERING OFF THURSDAY DURING THE DAY. SIGNIFICANT SNOW ACCUMULATIONS ARE EXPECTED. ...THUNDERSTORMS IMPLY STRONG...GUSTY AND ERRATIC WINDS... .REST OF TONIGHT... SKY/WEATHER.........CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS UNTIL 1800...THEN SNOW LIKELY UNTIL 2400...THEN SNOW. MIN TEMPERATURE.....15-23. MAX HUMIDITY........90-100%. 20-FOOT WINDS.......EAST UP TO 4 MPH UNTIL 1800...THEN NORTH 6-12 MPH. TRANSPORT WINDS.....NORTHEAST 8-16 MPH. MIXING HEIGHT.......1400-2400 FT AGL UNTIL 2100...THEN 400-600 FT AGL. SMOKE DISPERSAL.....POOR. HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .WEDNESDAY... SKY/WEATHER.........CLOUDY. AREAS OF BLOWING SNOW. SNOW. MAX TEMPERATURE.....25-31. MIN HUMIDITY........80-90%. 20-FOOT WINDS.......NORTH 8-13 MPH. TRANSPORT WINDS.....NORTH 16-24 MPH. MIXING HEIGHT.......3000-4000 FT AGL. SMOKE DISPERSAL.....POOR UNTIL 1200. GOOD AFTER 1600. HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .WEDNESDAY NIGHT... SKY/WEATHER.........CLOUDY. AREAS OF BLOWING SNOW. SNOW. MIN TEMPERATURE.....15-23. MAX HUMIDITY........90-100%. 20-FOOT WINDS.......NORTH 6-12 MPH. TRANSPORT WINDS.....NORTH 12-20 MPH. MIXING HEIGHT.......3200-4200 FT AGL. SMOKE DISPERSAL.....FAIR. HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .THURSDAY... SKY/WEATHER.........CLOUDY. SNOW LIKELY. MAX TEMPERATURE.....327-33. MIN HUMIDITY........60-70%. 20-FOOT WINDS.......NORTHWEST 5-9 MPH. TRANSPORT WINDS.....NORTHWEST 12-20 MPH. MIXING HEIGHT.......5200-6200 FT AGL. SMOKE DISPERSAL.....FAIR UNTIL 0900. GOOD AFTER 1100. HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .FORECAST DAYS 3 THROUGH 5... .FRIDAY...PARTLY CLOUDY. SLIGHT CHANCE OF SNOW UNTIL 0600...THEN SLIGHT CHANCE OF SNOW SHOWERS UNTIL 1800. LOWS AROUND 19. HIGHS IN THE LOWER 30S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. .SATURDAY...PARTLY CLOUDY. NOT AS COOL. LOWS IN THE LOWER 20S. HIGHS IN THE MID 40S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. .SUNDAY...PARTLY CLOUDY. LOWS IN THE MID 20S. HIGHS IN THE MID 40S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. .MONDAY...PARTLY CLOUDY. LOWS IN THE LOWER 20S. HIGHS AROUND 50. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. EXPERIMENTAL FIRE WEATHER TABLE FOR WALKER RANCH. +++ 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 10/27-19 100 60 32 94 NE 3 1 1858 E 8 14820 P 10/27-20 100 60 29 100 N 5 1 1181 E 8 8920 P 10/27-21 100 60 27 100 N 5 5 2 1 SW35 503 E 7 3020 P 10/27-22 100 60 26 100 N 6 1 452 E 8 3176 P 10/27-23 100 60 25 100 N 6 1 401 NE 10 3331 P 10/28-00 100 89 24 100 N 7 7 2 1 S44 350 NE 12 3487 P 10/28-01 100 89 24 100 N 7 1 381 NE 13 4438 P 10/28-02 100 89 23 100 N 8 1 411 NE 15 5390 P 10/28-03 100 89 22 100 N 9 9 2 1 S44 442 NE 16 6341 P 10/28-04 100 89 22 100 N 10 1 455 NE 18 7246 P 10/28-05 100 89 21 100 N 10 1 468 N 20 8152 P 10/28-06 100 83 20 100 N 12 12 2 1 S32 482 N 22 9057 P 10/28-07 100 83 20 100 N 10 1 518 N 22 9737 P 10/28-08 100 83 20 100 N 10 1 554 N 22 10417 P 10/28-09 100 83 20 100 N 10 10 2 1 S25 591 N 22 11097 P 10/28-10 100 83 21 100 N 10 1 1181 N 21 20718 P 10/28-11 100 83 23 100 N 10 1 1771 N 21 30339 P 10/28-12 100 90 25 100 NW 10 10 2 1 S20 2361 N 20 39960 P 10/28-13 100 90 26 100 N 10 1 2779 N 18 43911 F 10/28-14 100 90 27 98 N 10 1 3197 N 17 47861 F 10/28-15 100 90 27 96 N 10 10 2 1 SW14 3615 N 16 51812 F 10/28-16 100 90 26 96 N 10 1 3861 N 17 58627 F 10/28-17 100 90 24 99 N 10 1 4106 N 18 65443 G 10/28-18 100 91 28 82 N 10 10 2 1 SW10 4351 N 20 72258 G 10/28-19 100 91 26 87 N 10 1 4146 N 18 68117 G 10/28-20 100 91 24 90 N 9 1 3941 N 18 63977 G 10/28-21 100 91 24 91 N 9 9 2 1 W 5 3736 N 18 59836 F 10/28-22 100 91 23 92 N 7 1 3507 N 17 53986 F 10/28-23 100 91 22 92 N 7 1 3277 N 17 48136 F 10/29-00 100 82 22 92 N 7 7 2 1 W 3 3047 N 16 42286 F 10/29-01 100 82 21 91 N 7 1 3092 N 15 41402 F 10/29-02 100 82 21 91 N 7 1 3137 N 15 40519 F 10/29-03 100 82 21 90 N 7 7 2 1 S 2 3183 N 14 39635 P 10/29-04 100 82 20 89 N 7 1 3133 N 15 40020 F 10/29-05 100 82 20 89 N 7 1 3084 N 15 40404 F 10/29-06 97 61 20 89 N 7 7 2 1 W 2 3035 N 15 40788 F 10/29-07 97 61 20 87 N 6 1 3725 N 15 47338 F 10/29-08 97 61 21 83 N 6 1 4414 N 14 53887 F 10/29-09 97 61 23 75 N 6 6 2 1 NW 7 5104 N 14 60436 G 10/29-10 97 61 26 68 N 6 1 5577 N 15 74005 G 10/29-11 97 61 28 64 N 6 1 6050 N 16 87573 G 10/29-12 97 60 29 62 N 5 5 2 1 NW10 6523 N 18 101141 V 10/29-13 97 60 29 60 N 5 1 6380 NW 17 97618 G 10/29-14 97 60 29 59 N 5 1 6238 NW 17 94095 G 10/29-15 97 60 30 58 NW 5 5 2 1 NW21 6095 NW 17 90573 G 10/29-16 97 60 29 59 NW 3 1 5590 NW 17 85835 G 10/29-17 97 60 29 62 W 3 1 5086 NW 18 81097 G 10/29-18 70 30 27 69 SW 3 3 2 1 N31 4581 NW 20 76359 G 10/29-19 70 30 25 80 SW 5 1 3818 NW 21 66512 G 10/29-20 70 30 24 86 SW 6 1 3056 NW 22 56664 F 10/29-21 70 30 23 87 W 7 7 2 1 N36 2293 NW 23 46816 F 10/29-22 70 30 22 90 W 9 1 2011 NW 25 43831 F 10/29-23 70 30 22 88 W 10 1 1729 NW 28 40845 F 10/30-00 70 20 21 85 W 12 12 2 1 N31 1447 W 30 37860 P 10/30-01 70 20 21 83 W 12 1 1257 W 29 32185 P 10/30-02 70 20 20 80 W 13 1 1066 W 29 26510 P 10/30-03 70 20 20 78 W 13 13 2 1 NW28 876 W 28 20835 P 10/30-04 70 20 20 75 W 13 1 803 W 26 18589 P 10/30-05 70 20 20 74 W 13 1 730 W 25 16343 P 10/30-06 47 20 19 74 W 14 14 3 1 N45 657 W 24 14098 P 10/30-07 47 20 19 77 W 18 1 763 W 25 16583 P 10/30-08 47 20 21 76 W 17 1 868 W 25 19069 P 10/30-09 47 20 24 72 W 15 15 3 1 N64 974 NW 25 21554 P 10/30-10 47 20 28 68 W 13 1 1007 NW 23 20113 P 10/30-11 47 20 30 66 W 10 1 1041 NW 21 18672 P 10/30-12 47 20 31 65 W 9 9 2 1 N63 1074 NW 18 17230 P 10/30-13 47 20 32 63 W 8 1 1007 NW 17 14986 P 10/30-14 47 20 32 61 W 8 1 940 NW 15 12742 P 10/30-15 47 20 33 58 W 7 7 2 1 NW51 873 NW 14 10498 P 10/30-16 47 20 33 57 W 7 1 725 W 13 8435 P 10/30-17 47 20 32 56 W 7 1 576 W 13 6371 P 10/30-18 42 5 31 57 SW 7 7 2 1 N49 428 W 12 4308 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...WFO BOULDER REQUESTED BY...DAVE LARSEN REASON FOR REQUEST...PRESCRIBED .TAG 20091028.WALKE.02/BOU