FNUS75 KBOU 051347 FWSBOU SPOT FORECAST FOR JC RFB9...USFS NATIONAL WEATHER SERVICE DENVER CO 646 AM MST FRI FEB 5 2010 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...UPPER RIDGE OVER THE GREAT BASIN WILL MOVE EAST TODAY TO BE OVER CENTRAL COLORADO TONIGHT. MOISTURE TRAPPED UNDER THE RIDGE WILL INCREASE CLOUD COVER THROUGH THE DAY. EXPECT WARMER TEMPERATURES AND DRIER AIR OVER THE BURN TODAY WITH WINDS DECREASING THROUGH THE DAY. SMOKE DISPERSAL WILL BE HINDERED TODAY COMPARED TO YESTERDAY BUT STILL WILL HAVE GOOD DISPERSION IN THE AFTERNOON. MOISTURE WILL CONTINUE INCREASING TONIGHT AND SATURDAY WITH SNOW SHOWERS POSSIBLE IN THE AFTERNOON AND EVENING AS AN UPPER TROUGH MOVES OVER THE WESTERN US. ...THUNDERSTORMS IMPLY STRONG...GUSTY AND ERRATIC WINDS... .TODAY... SKY/WEATHER.........MOSTLY SUNNY UNTIL 0900...THEN MOSTLY CLOUDY. MAX TEMPERATURE.....36. MIN HUMIDITY........42%. WIND (20 FT)........WEST 7-18 MPH. TRANSPORT WINDS.....WEST 16-24 MPH. MIXING HEIGHT.......3800-4800 FT AGL. SMOKE DISPERSAL.....POOR UNTIL 1000. GOOD AFTER 1300. HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .TONIGHT... SKY/WEATHER.........MOSTLY CLOUDY. MIN TEMPERATURE.....26. MAX HUMIDITY........70%. WIND (20 FT)........WEST 9-14 MPH. GUSTS UP TO 20 MPH IN THE EVENING THEN 20 MPH EARLY IN THE MORNING. TRANSPORT WINDS.....WEST 16-20 MPH. MIXING HEIGHT.......2600-3600 FT AGL UNTIL 2000...THEN 1000-1800 FT AGL. SMOKE DISPERSAL.....GOOD UNTIL 1900. POOR AFTER 2000. HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .SATURDAY... SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS AFTER 1700. MAX TEMPERATURE.....40. MIN HUMIDITY........43%. WIND (20 FT)........WEST 8-13 MPH UNTIL 1200...THEN UPSLOPE/UPVALLEY 4-10 MPH. TRANSPORT WINDS.....WEST 16-24 MPH. MIXING HEIGHT.......4200-5200 FT AGL. SMOKE DISPERSAL.....POOR UNTIL 0900. GOOD AFTER 1100. HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .FORECAST DAYS 3 THROUGH 5... .SUNDAY...SLIGHT CHANCE OF SNOW SHOWERS UNTIL 0600...THEN CHANCE OF SNOW UNTIL 1800...THEN SNOW LIKELY. LOWS IN THE LOWER 20S. HIGHS IN THE MID 30S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. .MONDAY...SNOW LIKELY UNTIL 0600...THEN CHANCE OF SNOW UNTIL 1800...THEN SLIGHT CHANCE OF SNOW. COLDER. LOWS AROUND 10. HIGHS AROUND 18. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. .TUESDAY...PARTLY CLOUDY. SLIGHT CHANCE OF SNOW UNTIL 0600. NOT AS COLD. LOWS AROUND 7. HIGHS IN THE UPPER 20S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. EXPERIMENTAL FIRE WEATHER TABLE FOR JC RFB9. +++ 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 02/05-07 29 0 16 82 W 17 1 246 W 17 3591 P 02/05-08 29 0 17 81 W 15 25 2 1 NW46 245 W 15 3134 P 02/05-09 60 0 21 68 W 15 1 1132 W 16 17570 P 02/05-10 60 0 26 54 W 15 1 2019 W 17 32005 P 02/05-11 60 0 31 47 W 14 23 2 1 NW44 2906 NW 18 46440 F 02/05-12 60 0 33 43 W 14 1 3649 NW 18 57788 F 02/05-13 78 0 35 42 W 13 1 4391 W 18 69137 G 02/05-14 78 0 35 42 W 13 22 2 1 NW30 5133 W 18 80485 G 02/05-15 78 0 35 43 W 12 1 4911 W 20 83520 G 02/05-16 78 0 34 45 W 10 1 4689 W 22 86554 G 02/05-17 74 6 33 48 W 8 17 2 1 NW26 4467 W 23 89589 G 02/05-18 74 6 31 53 W 10 1 3581 W 22 70685 G 02/05-19 74 6 29 59 W 10 1 2695 W 22 51780 F 02/05-20 74 6 28 65 W 12 20 2 1 NW21 1808 W 21 32876 P 02/05-21 74 6 27 68 W 12 1 1511 W 20 26431 P 02/05-22 74 6 27 70 W 12 1 1213 W 18 19987 P 02/05-23 74 6 27 70 W 12 20 2 1 NW21 915 W 17 13542 P 02/06-00 74 6 27 70 W 12 1 949 W 16 13383 P 02/06-01 74 6 27 70 W 10 1 983 W 16 13223 P 02/06-02 74 6 27 69 W 9 16 2 1 W26 1017 W 15 13064 P 02/06-03 74 6 27 68 W 10 1 1156 W 16 16944 P 02/06-04 74 6 27 67 W 12 1 1296 W 18 20824 P 02/06-05 64 0 27 66 W 13 20 2 1 NW33 1435 W 20 24704 P 02/06-06 64 0 27 66 W 12 1 1514 W 20 25879 P 02/06-07 64 0 28 65 W 10 1 1593 W 20 27054 P 02/06-08 64 0 28 63 W 10 15 3 1 NW30 1672 W 20 28229 P 02/06-09 64 0 30 58 W 9 1 2602 W 18 41199 F 02/06-10 64 0 33 51 W 8 1 3532 W 18 54168 F 02/06-11 64 0 36 47 SW 7 7 3 1 W26 4462 W 17 67138 G 02/06-12 64 0 37 44 W 6 1 4736 W 18 77000 G 02/06-13 64 0 38 43 N 5 1 5010 W 20 86862 G 02/06-14 64 0 39 43 NE 3 3 3 1 W41 5284 W 21 96724 G 02/06-15 64 0 38 44 NE 3 1 5254 W 21 94813 G 02/06-16 64 0 38 45 N 3 1 5223 W 21 92901 G 02/06-17 87 18 37 47 N 5 5 3 1 W35 5193 W 21 90989 G 02/06-18 87 18 36 50 N 5 1 4681 W 18 75641 G 02/06-19 87 18 34 53 NW 5 1 4168 W 16 60293 G 02/06-20 87 18 32 56 NW 6 6 3 1 W32 3655 W 14 44945 F 02/06-21 87 18 31 58 W 6 1 3054 W 14 37073 P 02/06-22 87 18 30 60 W 6 1 2453 W 14 29202 P 02/06-23 87 18 30 61 W 6 6 3 1 W30 1852 W 14 21331 P 02/07-00 87 18 29 62 W 6 1 1696 W 13 18227 P 02/07-01 87 18 28 64 W 7 1 1541 W 12 15123 P 02/07-02 87 18 27 65 W 7 7 3 1 W28 1385 W 10 12018 P 02/07-03 87 18 27 65 W 8 1 1354 W 9 10732 P 02/07-04 87 18 27 65 NW 8 1 1323 W 8 9445 P 02/07-05 100 50 27 66 NW 8 8 3 1 W26 1291 W 7 8159 P 02/07-06 100 50 26 69 NW 8 1 1591 W 6 6806 P 02/07-07 100 50 26 71 N 7 1 1891 S 3 5454 P 02/07-08 100 50 26 72 N 6 6 2 1 W25 2191 S 2 4101 P 02/07-09 100 50 28 69 NE 5 1 3094 S 5 15390 P 02/07-10 100 50 30 65 NE 5 1 3997 S 7 26679 P 02/07-11 97 50 31 61 E 3 3 2 1 SW22 4900 S 9 37968 P 02/07-12 97 50 32 59 E 3 1 4951 S 9 39256 P 02/07-13 97 50 33 57 E 3 1 5003 S 9 40544 F 02/07-14 97 50 33 56 E 3 3 2 1 SW17 5054 S 9 41832 F 02/07-15 97 50 33 56 NE 3 1 5010 S 9 39690 P 02/07-16 97 50 32 57 NE 5 1 4966 SE 9 37547 P 02/07-17 100 60 31 59 NE 5 5 2 1 W20 4922 SE 8 35405 P 02/07-18 100 60 29 63 NE 5 1 4554 SE 8 32903 P 02/07-19 100 60 26 69 E 6 1 4186 E 8 30401 P 02/07-20 100 60 24 76 E 6 6 2 1 SW14 3818 E 8 27899 P 02/07-21 100 60 22 81 E 7 1 3433 E 9 26081 P 02/07-22 100 60 21 85 E 7 1 3049 E 9 24264 P 02/07-23 100 60 19 88 E 7 7 2 1 W14 2664 E 9 22446 P 02/08-00 100 60 18 90 E 7 1 2398 E 8 18389 P 02/08-01 100 60 17 92 E 6 1 2132 NE 7 14333 P 02/08-02 100 60 16 92 E 6 6 2 1 W13 1865 NE 7 10277 P 02/08-03 100 60 15 92 E 6 1 1790 NE 6 9410 P 02/08-04 100 60 15 91 E 5 1 1715 NE 6 8543 P 02/08-05 89 40 15 91 E 5 5 2 1 NW18 1640 N 6 7676 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...TIM EGAN REASON FOR REQUEST...PRESCRIBED .TAG 20100205.JCRFB.01/BOU