FNUS75 KBOU 251227 FWSBOU SPOT FORECAST FOR WALKER RANCH...USFS NATIONAL WEATHER SERVICE DENVER CO 623 AM MDT SUN OCT 25 2009 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...AN UPPER LEVEL TROUGH WILL MAKE ITS WAY ACROSS NORTHERN COLORADO TODAY. NORTHEASTERLY WINDS WILL ALLOW FOR LIGHT SNOW TO BECOME BE LIKELY IN THE FOOTHILLS. THE BEST WINDOWS FOR SNOW WILL BETWEEN 1500 THIS AFTERNOON TO 2100 THIS EVENING. SNOW ACCUMULATIONS WILL RANGE FROM 1 TO 4 INCHES. ...THUNDERSTORMS IMPLY STRONG...GUSTY AND ERRATIC WINDS... .TODAY... SKY/WEATHER.........CLOUDY. CHANCE OF SNOW UNTIL 1200...THEN SNOW LIKELY. MAX TEMPERATURE.....31-34. MIN HUMIDITY........78-83%. 20-FOOT WINDS.......NORTHEAST 5-9 MPH. TRANSPORT WINDS.....NORTH 4-12 MPH. MIXING HEIGHT.......4000-5000 FT AGL. SMOKE DISPERSAL.....POOR UNTIL 1300. FAIR AFTER 1500. HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .TONIGHT... SKY/WEATHER.........CLOUDY UNTIL 2400...THEN PARTLY CLOUDY(35-45%). CHANCE OF SNOW UNTIL 2100...THEN SLIGHT CHANCE OF SNOW UNTIL 2400. MIN TEMPERATURE.....18-21. MAX HUMIDITY........88-93%. 20-FOOT WINDS.......NORTHEAST 5-6 MPH UNTIL 2100...THEN WEST 7-13 MPH. TRANSPORT WINDS.....NORTH 8-16 MPH UNTIL 2400...THEN NORTHWEST 4-8 MPH. MIXING HEIGHT.......3800-4800 FT AGL UNTIL 2000. 400-1200 FT AGL AFTER 2300. SMOKE DISPERSAL.....GOOD UNTIL 1900. POOR AFTER 2000. HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .MONDAY... SKY/WEATHER.........MOSTLY SUNNY UNTIL 1200...THEN PARTLY CLOUDY(40-50%). MAX TEMPERATURE.....45. MIN HUMIDITY........34%. 20-FOOT WINDS.......WEST 6-12 MPH. TRANSPORT WINDS.....WEST 12-16 MPH UNTIL 1200...THEN NORTHWEST 17-28 MPH. MIXING HEIGHT.......2000-3000 FT AGL. SMOKE DISPERSAL.....POOR UNTIL 1100...THEN FAIR UNTIL 1700...THEN POOR. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .FORECAST DAYS 3 THROUGH 5... .TUESDAY...CLOUDY. SLIGHT CHANCE OF RAIN AFTER 0600 UNTIL 1800... THEN CHANCE OF SNOW. LOWS IN THE LOWER 30S. HIGHS IN THE MID 40S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. .WEDNESDAY...CHANCE OF SNOW UNTIL 0600...THEN SNOW LIKELY UNTIL 1800...THEN CHANCE OF SNOW. COLDER. LOWS IN THE LOWER 20S. HIGHS IN THE UPPER 20S. NORTH WINDS AROUND 13 MPH WITH GUSTS TO AROUND 25 MPH. .THURSDAY...MOSTLY CLOUDY. CHANCE OF SNOW UNTIL 1800...THEN SLIGHT CHANCE OF SNOW. LOWS AROUND 18. HIGHS IN THE LOWER 30S. NORTHWEST WINDS AROUND 14 MPH WITH GUSTS TO AROUND 25 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 10/25-06 86 50 26 94 CALM 1 2 1 W25 2701 NW 5 10776 P 10/25-07 86 50 27 94 NE 2 1 2802 NW 5 12704 P 10/25-08 86 50 26 100 NE 2 1 2903 N 6 14633 P 10/25-09 86 50 28 96 NE 3 3 2 1 W30 3004 N 7 16562 P 10/25-10 86 50 30 91 NE 5 1 3549 N 7 22043 P 10/25-11 86 50 31 87 NE 6 1 4094 N 8 27524 P 10/25-12 89 60 32 85 NE 7 7 2 1 W35 4639 N 8 33005 P 10/25-13 89 60 33 83 NE 7 1 4801 N 9 40543 F 10/25-14 89 60 33 81 NE 7 1 4963 N 12 48081 F 10/25-15 89 60 33 78 NE 7 7 2 1 NW26 5125 N 13 55619 F 10/25-16 89 60 33 78 NE 6 1 5025 N 14 58483 F 10/25-17 89 60 32 78 NE 5 1 4926 N 14 61347 G 10/25-18 84 40 30 81 NE 5 5 2 1 NW18 4826 N 15 64212 G 10/25-19 84 40 27 88 NE 3 1 3856 N 14 48590 F 10/25-20 84 40 25 92 N 3 1 2886 N 12 32969 P 10/25-21 84 10 24 93 NW 3 3 2 1 N22 1916 N 10 17347 P 10/25-22 84 10 23 93 NW 3 1 1565 N 8 12727 P 10/25-23 84 10 23 92 W 3 1 1214 N 7 8107 P 10/26-00 42 0 22 91 SW 3 3 2 1 N24 864 NW 5 3487 P 10/26-01 42 0 21 90 SW 6 1 742 NW 6 3442 P 10/26-02 42 0 21 88 W 7 1 620 NW 7 3397 P 10/26-03 42 0 20 86 W 9 9 2 1 N28 499 W 8 3353 P 10/26-04 42 0 20 83 W 12 1 521 W 8 3928 P 10/26-05 42 0 20 80 W 13 1 544 W 9 4502 P 10/26-06 18 0 19 78 W 10 10 3 1 N31 567 W 10 5077 P 10/26-07 18 0 18 83 W 10 1 676 W 12 8246 P 10/26-08 18 0 23 71 W 10 1 1161 W 13 15012 P 10/26-09 18 0 32 50 W 10 10 4 1 N46 1646 W 15 21779 P 10/26-10 18 0 40 38 W 9 1 2358 NW 15 30881 P 10/26-11 18 0 42 36 W 7 1 3071 NW 15 39983 P 10/26-12 46 0 43 36 W 6 6 4 1 N37 3784 NW 15 49085 F 10/26-13 46 0 44 35 W 3 1 3544 NW 16 50291 F 10/26-14 46 0 44 36 W 2 1 3303 W 18 51498 F 10/26-15 46 0 45 34 W 2 2 3 1 NW31 3063 W 20 52704 F 10/26-16 46 0 44 35 W 6 1 2262 W 24 41262 F 10/26-17 46 0 42 37 W 10 1 1460 W 28 29820 P 10/26-18 64 0 39 41 W 15 21 2 1 NW35 659 W 32 18379 P 10/26-19 64 0 36 46 W 16 1 532 W 28 13800 P 10/26-20 64 0 34 50 W 16 1 405 W 23 9221 P 10/26-21 64 0 34 51 W 16 23 2 1 NW38 277 W 20 4642 P 10/26-22 64 0 34 51 W 17 1 251 W 21 4433 P 10/26-23 64 0 34 49 W 17 1 224 W 22 4224 P 10/27-00 67 0 33 48 W 18 25 2 1 NW35 197 W 23 4015 P 10/27-01 67 0 33 47 W 18 1 209 W 24 4398 P 10/27-02 67 0 33 47 W 18 1 220 W 25 4781 P 10/27-03 67 0 33 45 W 18 25 2 1 W45 231 W 25 5164 P 10/27-04 67 0 33 45 W 18 1 211 W 26 4800 P 10/27-05 67 0 33 43 W 17 1 191 W 26 4435 P 10/27-06 83 11 32 44 W 17 24 2 1 W51 170 W 28 4071 P 10/27-07 83 11 32 47 W 17 1 203 W 29 5220 P 10/27-08 83 11 34 47 W 16 1 235 W 31 6370 P 10/27-09 83 11 39 41 W 15 21 2 1 W41 268 W 32 7519 P 10/27-10 83 11 43 37 W 13 1 334 W 29 7736 P 10/27-11 83 11 45 37 W 10 1 400 W 24 7952 P 10/27-12 83 11 45 37 W 8 8 2 1 W47 466 W 21 8168 P 10/27-13 83 11 46 37 NW 7 1 883 W 16 10195 P 10/27-14 83 11 45 37 N 6 1 1301 W 13 12221 P 10/27-15 83 11 46 37 N 6 6 2 1 W59 1718 W 9 14247 P 10/27-16 83 11 45 40 N 5 1 1237 W 8 9976 P 10/27-17 83 11 41 45 N 5 1 756 W 7 5704 P 10/27-18 95 42 35 63 NW 3 3 2 1 SW46 274 W 6 1432 P 10/27-19 95 42 30 74 N 3 1 315 NW 6 1687 P 10/27-20 95 42 27 83 N 3 1 355 N 6 1941 P 10/27-21 95 42 27 85 NE 3 3 2 1 SW51 395 NE 7 2196 P 10/27-22 95 42 26 89 N 2 1 389 E 6 1930 P 10/27-23 95 42 26 89 NW 2 1 383 E 5 1663 P 10/28-00 95 42 24 93 NW 2 2 2 1 SW58 377 E 5 1397 P 10/28-01 95 42 24 94 NW 5 1 877 E 6 5731 P 10/28-02 95 42 25 88 N 8 1 1377 NE 7 10066 P 10/28-03 95 42 25 86 NE 10 10 2 1 SW49 1878 NE 9 14400 P 10/28-04 95 42 24 88 NE 10 1 2135 NE 10 19040 P 10/28-05 95 42 24 90 NE 10 1 2392 NE 12 23680 P 10/28-06 95 55 23 95 N 10 10 2 S48 2649 NE 13 28320 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...1592 STALNACKER REASON FOR REQUEST...PRESCRIBED .TAG 20091025.WALKE.02/BOU