FNUS75 KBOU 241742 CCA FWSBOU SPOT FORECAST FOR HWY 40 GRASS FIRE...USFS NATIONAL WEATHER SERVICE DENVER CO 1135 AM MDT MON MAY 24 2010 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...AN UNUSUALLY STRONG JETSTREAM FOR THIS TIME OF YEAR WILL COMBINE WITH AN STRENGTHENING CROSS STATE PRESSURE GRADIENT TO PRODUCE STRONG AND VERY GUSTY WINDS THROUGHOUT THE DAY TODAY. SOUTH TO SOUTHWEST WINDS LATE THIS MORNING AND EARLY IN THE AFTERNOON ARE EXPECTED TO GRADUALLY SHIFT TO MORE WESTERLY LATER IN THE AFTERNOON WITH THE PASSAGE OF A RELATIVELY WEAK UPPER LEVEL LOW PRESSURE TROUGH. EXPOSED AREAS WILL BE ESPECIALLY PRONE TO THESE STRONG WINDS. HOWEVER WITH THE WIND SHIFT TEMPERATURES WILL BEGIN TO FALL SLOWLY AND RELATIVE HUMIDITIES SLOWLY RISE. BY THIS EVENING... THE BURN AREA MAY SEE A FEW LIGHT SHOWERS...BUT CHANCES FOR WETTING PRECIPITATION WILL REMAIN LOW. WIND SPEEDS ARE EXPECTED TO EASE OVERNIGHT AS THIS WEAK UPPER AIR DISTURBANCE MOVES EAST OF THE STATE. ...THUNDERSTORMS IMPLY STRONG...GUSTY AND ERRATIC WINDS... .REST OF TODAY... SKY/WEATHER.........PARTLY CLOUDY(40-50%). SLIGHT CHANCE OF RAIN AND SNOW SHOWERS AND PERHAPS A THUNDERSTORM AFTER 1500. CONTINUED VERY WINDY. MAX TEMPERATURE.....53-56. MIN HUMIDITY........29-32%. WIND (20 FT)........SOUTHWEST WINDS 17-27 MPH WITH GUSTS TO 40 MPH UNTIL 1400...BECOMING WEST 20-30 MPH WITH GUSTS TO 50 MPH. TRANSPORT WINDS.....SOUTHWEST 40-50 MPH. MIXING HEIGHT.......6400-7400 FT AGL AFTER 0700. SMOKE DISPERSAL.....EXCELLENT. HAINES INDEX........3 VERY LOW. .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY AND WINDY WITH A SLIGHT CHANCE OF RAIN AND SNOW SHOWERS IN THE EVENING. THEN BECOMING MOSTLY CLEAR AND NOT AS WINDY AFTER MIDNIGHT. MIN TEMPERATURE.....29-34. MAX HUMIDITY........57-64%. WIND (20 FT)........WEST WINDS 20-30 MPH WITH GUSTS TO 45 MPH UNTIL 2200...THEN 12-20 MPH WITH GUSTS TO 30 MPH. TRANSPORT WINDS.....WEST 40-52 MPH UNTIL 2400...THEN 28-36 MPH. MIXING HEIGHT.......5200-6200 FT AGL UNTIL 2100. 1800-2600 FT AGL AFTER 2400. SMOKE DISPERSAL.....EXCELLENT UNTIL 1900...BECOMING FAIR AFTER 0300. HAINES INDEX........3 VERY LOW. .TUESDAY... SKY/WEATHER.........PARTLY CLOUDY(40-50%). MAX TEMPERATURE.....51-55. MIN HUMIDITY........19-24%. WIND (20 FT)........SOUTH WINDS 10-18 MPH. GUSTS TO 30 MPH IN THE AFTERNOON. TRANSPORT WINDS.....SOUTHWEST 17-28 MPH. MIXING HEIGHT.......2600-3600 FT AGL UNTIL 1000...THEN 7800-8800 FT AGL. SMOKE DISPERSAL.....POOR UNTIL 0700...THEN FAIR UNTIL 0800...THEN GOOD UNTIL 1000...THEN VERY GOOD. HAINES INDEX........2 VERY LOW. .FORECAST DAYS 3 THROUGH 5... .WEDNESDAY...PARTLY CLOUDY. LOWS IN THE MID 30S. HIGHS IN THE LOWER 60S. SOUTH WINDS AROUND 10 MPH WITH GUSTS TO 20 MPH. .THURSDAY...PARTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS AFTER 1200. LOWS IN THE UPPER 30S. HIGHS IN THE LOWER 60S. SOUTH WINDS AROUND 11 MPH WITH GUSTS TO 25 MPH. .FRIDAY...PARTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS AFTER 1200. LOWS IN THE UPPER 30S. HIGHS IN THE LOWER 60S. SOUTHWEST WINDS AROUND 9 MPH WITH GUSTS TO 20 MPH. EXPERIMENTAL FIRE WEATHER TABLE FOR HWY 40 GRASS FIRE. +++ 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 05/24-11 48 10 47 29 SW 21 1 5958 SW 29 143656 V 05/24-12 53 10 45 32 SW 22 35 2 2 S74 6542 SW 24 137586 V 05/24-13 53 10 43 36 SW 24 2 6984 SW 32 198087 E 05/24-14 53 10 39 41 SW 26 2 7426 SW 39 258588 E 05/24-15 53 10 37 44 W 29 46 2 2 SW55 7869 SW 47 319089 E 05/24-16 53 10 37 44 W 29 2 7291 W 48 302474 E 05/24-17 53 10 38 42 W 29 2 6714 W 49 285860 E 05/24-18 18 0 38 41 W 28 44 2 1 W58 6136 W 51 269245 E 05/24-19 18 0 36 44 W 26 1 5530 W 48 233902 E 05/24-20 18 0 34 49 W 25 1 4923 W 46 198559 E 05/24-21 18 0 31 53 W 24 39 2 1 W74 4317 W 44 163216 E 05/24-22 18 0 31 51 W 21 1 3766 W 41 138230 V 05/24-23 18 0 30 48 W 18 1 3215 W 40 113243 V 05/25-00 30 0 30 45 W 16 25 3 1 SW63 2664 W 38 88257 G 05/25-01 30 0 30 43 W 17 1 2388 W 37 77405 G 05/25-02 30 0 30 42 W 18 1 2111 W 36 66554 G 05/25-03 30 0 30 41 W 20 31 3 1 SW53 1834 W 35 55702 F 05/25-04 30 0 29 40 W 18 1 1770 W 32 50280 F 05/25-05 30 0 28 39 SW 16 1 1707 W 30 44857 F 05/25-06 34 0 29 37 SW 14 22 2 1 SW43 1643 W 28 39435 P 05/25-07 34 0 33 31 SW 13 1 2507 W 26 53811 F 05/25-08 34 0 38 26 SW 13 1 3370 SW 24 68187 G 05/25-09 34 0 38 26 S 13 21 2 1 SW39 4234 SW 23 82563 G 05/25-10 34 0 42 23 S 13 1 5458 SW 22 105533 V 05/25-11 34 0 45 21 S 12 1 6682 SW 22 128503 V 05/25-12 52 0 47 20 S 12 18 2 1 SW41 7906 SW 22 151473 E 05/25-13 52 0 48 19 S 10 1 8248 SW 20 142200 V 05/25-14 52 0 49 20 S 9 1 8591 SW 18 132928 V 05/25-15 52 0 50 20 S 8 13 2 1 SW31 8933 SW 16 123655 V 05/25-16 52 0 50 20 S 7 1 8845 S 16 123154 V 05/25-17 52 0 50 21 S 6 1 8758 S 16 122654 V 05/25-18 47 5 49 22 S 5 5 2 1 SW36 8670 S 16 122154 V 05/25-19 47 5 48 24 S 3 1 6765 S 15 92992 G 05/25-20 47 5 45 27 S 3 1 4860 S 15 63830 G 05/25-21 47 5 43 30 SW 3 3 2 1 SW36 2955 S 14 34668 P 05/25-22 47 5 42 33 SW 5 1 2363 S 13 26990 P 05/25-23 47 5 41 35 S 6 1 1771 S 12 19311 P 05/26-00 30 4 40 36 S 8 13 2 1 SW32 1178 S 12 11633 P 05/26-01 30 4 39 38 S 9 1 949 S 12 9288 P 05/26-02 30 4 38 39 S 10 1 719 S 12 6943 P 05/26-03 30 4 37 41 SW 12 18 2 1 SW28 489 S 10 4598 P 05/26-04 30 4 37 41 SW 13 1 441 S 12 4469 P 05/26-05 30 4 37 41 SW 13 1 392 S 13 4339 P 05/26-06 23 1 37 41 SW 13 21 2 1 SW22 344 S 14 4209 P 05/26-07 23 1 38 38 S 12 1 1480 S 14 19037 P 05/26-08 23 1 43 31 S 9 1 2617 S 15 33865 P 05/26-09 23 1 47 26 S 8 13 3 1 SW16 3753 S 15 48694 F 05/26-10 23 1 52 22 S 9 1 5097 S 16 70814 G 05/26-11 23 1 55 20 S 12 1 6441 S 16 92935 G 05/26-12 56 9 57 18 S 13 21 2 1 SW18 7784 S 17 115056 V 05/26-13 56 9 58 18 S 13 1 8379 S 16 113682 V 05/26-14 56 9 59 19 S 12 1 8974 S 15 112308 V 05/26-15 56 9 60 20 S 10 16 2 1 SW17 9569 S 14 110935 V 05/26-16 56 9 60 21 S 9 1 9322 S 14 111841 V 05/26-17 56 9 60 23 S 8 1 9074 SW 14 112748 V 05/26-18 56 9 58 25 S 8 13 2 1 SW18 8826 SW 15 113655 V 05/26-19 56 9 56 28 S 8 1 6224 S 14 78946 G 05/26-20 56 9 53 32 S 9 1 3621 S 13 44237 F 05/26-21 56 9 49 37 SE 9 15 2 1 SW23 1019 S 10 9528 P 05/26-22 56 9 47 41 SE 9 1 924 S 12 9480 P 05/26-23 56 9 45 44 SE 8 1 830 S 14 9432 P 05/27-00 29 0 43 47 SE 8 13 2 1 SW22 735 S 15 9384 P 05/27-01 29 0 42 49 SE 8 1 580 S 14 7161 P 05/27-02 29 0 40 51 S 8 1 425 S 13 4939 P 05/27-03 29 0 39 53 S 8 13 2 1 S13 270 S 12 2717 P 05/27-04 29 0 38 52 S 8 1 250 S 12 2543 P 05/27-05 29 0 38 52 S 9 1 229 S 12 2369 P 05/27-06 29 0 38 52 S 9 15 3 1 S16 208 S 13 2195 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...BAKER WFO BOULDER REQUESTED BY...MATT TAYLOR REASON FOR REQUEST...WILDFIRE .TAG 20100524.HWY40.01/BOU