FNUS75 KBOU 282359 FWSBOU SPOT FORECAST FOR ELK AERIAL SURVEY...USFS NATIONAL WEATHER SERVICE DENVER CO 459 PM MST SAT FEB 28 2009 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...A HIGH PRESSURE RIDGE ALOFT WILL CONTINUE OVER COLORADO THROUGH MONDAY. WINDS ALOFT WILL BE LIGHT TO MODERATE AND OUT OF THE NORTHWEST. A WEAK TROUGH OF LOW PRESSURE WILL BE NEAR THE FOOTHILLS RESULTING IN WEAK PRESSURE GRADIENTS ACROSS THE AREA. THE AIRMASS WILL BE DRY AND STABLE. SIMILAR DRY AND STABLE CONDITIONS ARE EXPECTED AGAIN ON MONDAY. ...THUNDERSTORMS IMPLY STRONG...GUSTY AND ERRATIC WINDS... .TONIGHT... SKY/WEATHER.........MOSTLY CLEAR. MIN TEMPERATURE.....14-20. MAX HUMIDITY........50-58%. 20-FOOT WINDS.......WEST 8-13 MPH. TRANSPORT WINDS.....WEST 12-20 MPH. MIXING HEIGHT.......2800-3800 FT AGL UNTIL 2000...THEN 500-1000 FT AGL. SMOKE DISPERSAL.....GOOD UNTIL 1900. POOR AFTER 2000. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .SUNDAY... SKY/WEATHER.........PARTLY CLOUDY(30-40%). MAX TEMPERATURE.....44-50. MIN HUMIDITY........14-20%. 20-FOOT WINDS.......WEST AROUND 8 MPH UNTIL 0900...THEN UPSLOPE/UPVALLEY 4-10 MPH UNTIL 1500...THEN WEST 8-10 MPH. TRANSPORT WINDS.....WEST 13-24 MPH UNTIL 1200...THEN 28-32 MPH. MIXING HEIGHT.......1000-1500 FT AGL UNTIL 1100...THEN 4000-5000 FT AGL. SMOKE DISPERSAL.....POOR UNTIL 0900. VERY GOOD AFTER 1400. HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .SUNDAY NIGHT... SKY/WEATHER.........PARTLY CLOUDY(50-60%). MIN TEMPERATURE.....26-32. MAX HUMIDITY........35-45%. 20-FOOT WINDS.......WEST 11-20 MPH. GUSTS UP TO 30 MPH IN THE LATE EVENING AND OVERNIGHT. TRANSPORT WINDS.....WEST 33-40 MPH. MIXING HEIGHT.......3000-4000 FT AGL UNTIL 2000...THEN 1000-1500 FT AGL. SMOKE DISPERSAL.....VERY GOOD UNTIL 1900. FAIR AFTER 2300. HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .MONDAY... SKY/WEATHER.........MOSTLY CLOUDY. MAX TEMPERATURE.....50-56. MIN HUMIDITY........16-24%. 20-FOOT WINDS.......BREEZY. WEST 12-20 MPH WITH GUSTS TO AROUND 30 MPH. TRANSPORT WINDS.....WEST 44-52 MPH. MIXING HEIGHT.......2400-3400 FT AGL UNTIL 1400...THEN 5000-5600 FT AGL. SMOKE DISPERSAL.....GOOD UNTIL 1100...THEN FAIR UNTIL 1200...THEN VERY GOOD UNTIL 1300...THEN EXCELLENT. HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .FORECAST DAYS 3 THROUGH 5... .TUESDAY...PARTLY CLOUDY. LOWS AROUND 30. HIGHS IN THE LOWER 50S. WEST WINDS AROUND 20 MPH WITH GUSTS TO AROUND 40 MPH. .WEDNESDAY...MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW AFTER 1800. LOWS IN THE UPPER 20S. HIGHS IN THE LOWER 50S. WEST WINDS AROUND 20 MPH WITH GUSTS TO AROUND 45 MPH. .THURSDAY...MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW UNTIL 1800. COLDER. LOWS IN THE MID 20S. HIGHS AROUND 40. WEST WINDS AROUND 16 MPH WITH GUSTS TO AROUND 40 MPH. .FRIDAY...MOSTLY CLOUDY. LOWS IN THE LOWER 20S. HIGHS IN THE LOWER 40S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. EXPERIMENTAL FIRE WEATHER TABLE FOR ELK AERIAL SURVEY. +++ 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 02/28-16 20 0 36 21 SW 5 1 5070 NW 25 110802 V 02/28-17 11 0 33 23 W 7 7 3 1 NW67 4659 NW 29 114200 V 02/28-18 11 0 31 25 W 7 1 3712 NW 24 84289 G 02/28-19 11 0 28 28 W 8 1 2765 NW 20 54377 F 02/28-20 11 0 26 32 W 8 8 3 1 NW73 1818 NW 15 24466 P 02/28-21 11 0 23 37 W 8 1 1385 W 15 18315 P 02/28-22 11 0 22 43 W 9 1 953 W 14 12164 P 02/28-23 28 0 21 48 W 9 9 4 1 NW58 520 W 14 6013 P 03/01-00 28 0 19 51 W 9 1 414 W 13 4702 P 03/01-01 28 0 18 51 W 9 1 309 W 13 3391 P 03/01-02 28 0 18 51 W 9 9 4 1 NW38 204 W 12 2081 P 03/01-03 28 0 17 54 W 9 1 177 W 12 1774 P 03/01-04 28 0 17 56 W 9 1 150 W 12 1468 P 03/01-05 39 0 18 55 W 9 9 3 1 NW26 123 W 10 1161 P 03/01-06 39 0 18 48 W 8 1 147 W 10 1240 P 03/01-07 39 0 21 39 W 6 1 172 W 9 1319 P 03/01-08 39 0 25 30 W 5 5 2 1 W37 196 W 8 1398 P 03/01-09 39 0 30 26 W 5 1 1298 W 15 29415 P 03/01-10 39 0 35 24 SW 5 1 2401 W 22 57433 F 03/01-11 33 0 39 23 SW 5 5 2 1 NW55 3504 W 28 85451 G 03/01-12 33 0 42 21 SW 5 1 3917 W 29 98172 G 03/01-13 33 0 45 19 W 5 1 4330 W 30 110892 V 03/01-14 33 0 46 18 W 6 6 2 1 W62 4743 W 30 123613 V 03/01-15 33 0 46 18 W 7 1 4474 W 30 117667 V 03/01-16 33 0 45 20 W 8 1 4204 W 31 111721 V 03/01-17 49 0 43 22 W 9 9 2 1 W59 3935 W 31 105776 V 03/01-18 49 0 41 24 W 10 1 3767 W 37 122298 V 03/01-19 49 0 39 27 W 12 1 2951 W 37 94936 G 03/01-20 49 0 37 30 W 13 13 2 1 NW38 2134 W 37 67574 G 03/01-21 49 0 35 32 W 14 1 1834 W 36 57394 F 03/01-22 49 0 33 34 W 15 1 1534 W 36 47213 F 03/01-23 49 0 33 35 W 15 24 2 1 W40 1234 W 35 37033 P 03/02-00 49 0 31 37 W 15 1 1205 W 35 36271 P 03/02-01 49 0 31 37 W 15 1 1175 W 35 35509 P 03/02-02 49 0 30 36 W 15 24 2 1 W55 1146 W 35 34747 P 03/02-03 49 0 30 35 W 16 1 1205 W 37 38875 P 03/02-04 49 0 30 34 W 17 1 1265 W 39 43003 F 03/02-05 70 0 30 35 W 18 30 3 1 W59 1324 W 41 47131 F 03/02-06 70 0 31 35 W 20 1 1702 W 43 65118 G 03/02-07 70 0 32 32 W 20 1 2079 W 45 83105 G 03/02-08 70 0 36 30 W 21 33 2 1 W45 2457 W 47 101091 V 03/02-09 70 0 40 46 W 22 1 2049 W 47 84315 G 03/02-10 70 0 43 43 W 22 1 1640 W 47 67539 G 03/02-11 70 0 46 37 W 23 37 2 1 W31 1232 W 47 50762 F 03/02-12 70 0 49 33 W 23 1 2657 W 48 113703 V 03/02-13 70 0 51 20 W 23 1 4082 W 49 176644 E 03/02-14 70 0 51 20 W 23 37 2 1 W52 5507 W 51 239585 E 03/02-15 70 0 51 21 W 23 1 5361 W 52 239926 E 03/02-16 70 0 49 23 W 23 1 5216 W 53 240268 E 03/02-17 64 5 47 26 W 23 37 2 1 W47 5070 W 54 240609 E 03/02-18 64 5 45 29 W 22 1 4513 W 53 208253 E 03/02-19 64 5 42 31 W 21 1 3955 W 51 175897 E 03/02-20 64 5 39 33 W 20 31 2 1 W52 3397 W 48 143541 V 03/02-21 64 5 37 35 W 20 1 3085 W 45 121988 V 03/02-22 64 5 36 36 W 18 1 2774 W 40 100434 V 03/02-23 64 5 34 37 W 18 30 2 1 W52 2462 W 37 78881 G 03/03-00 64 5 33 37 W 17 1 2400 W 36 75391 G 03/03-01 64 5 32 37 W 16 1 2338 W 36 71902 G 03/03-02 64 5 32 34 W 15 24 2 1 W35 2276 W 35 68413 G 03/03-03 64 5 31 32 W 15 1 2544 W 35 76344 G 03/03-04 64 5 31 31 W 15 1 2811 W 35 84274 G 03/03-05 57 4 31 29 W 15 24 2 1 W29 3079 W 35 92205 G 03/03-06 57 4 32 30 W 15 1 3066 W 36 94398 G 03/03-07 57 4 33 31 W 15 1 3052 W 37 96591 G 03/03-08 57 4 36 29 W 16 25 2 1 W33 3039 W 38 98784 G 03/03-09 57 4 39 46 W 17 1 2720 W 38 89481 G 03/03-10 57 4 43 40 W 18 1 2401 W 39 80178 G 03/03-11 57 4 45 36 SW 20 31 2 1 W56 2083 W 39 70874 G 03/03-12 57 4 47 33 W 22 1 3468 W 44 143703 V 03/03-13 57 4 49 21 W 24 1 4853 W 48 216532 E 03/03-14 57 4 50 21 W 25 40 2 1 W68 6239 W 53 289360 E 03/03-15 57 4 49 21 W 26 1 6136 W 54 288794 E 03/03-16 57 4 48 23 W 25 1 6033 W 55 288228 E 03/03-17 53 4 45 25 W 25 40 2 W55 5931 W 56 287661 E 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...DONNA GOVAN REASON FOR REQUEST...PRESCRIBED .TAG 20090301.ELKAE.01/BOU