FNUS75 KBOU 161744 FWSBOU SPOT FORECAST FOR PORTER RANCH 5...USFS NATIONAL WEATHER SERVICE DENVER CO 1035 AM MST TUE FEB 16 2010 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...AN UPPER RIDGE WEST OF COLORADO WILL BREAK DOWN THROUGH THE DAY WEDNESDAY AS AN UPPER TROUGH DEVELOPS OVER THE NORTHERN U.S. THIS UPPER TROUGH WILL BEGAN TO AFFECT WEATHER OVER THE FORECAST AREA BY WEDNESDAY NIGHT CONTINUING INTO FRIDAY. CLOUDINESS AND MOISTURE WILL MOVE INTO HE BURN AREA LATER WEDNESDAY. ...THUNDERSTORMS IMPLY STRONG...GUSTY AND ERRATIC WINDS... .REST OF TODAY... SKY/WEATHER.........MOSTLY SUNNY. MAX TEMPERATURE.....30-35. MIN HUMIDITY........35-45%. WIND (20 FT)........WEST 4-10 MPH. TRANSPORT WINDS.....NORTHWEST 16-24 MPH. MIXING HEIGHT.......4600-5600 FT AGL. SMOKE DISPERSAL.....GOOD UNTIL 1100...THEN VERY GOOD. HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .TONIGHT... SKY/WEATHER.........MOSTLY CLEAR. MIN TEMPERATURE.....22-28. MAX HUMIDITY........50-60%. WIND (20 FT)........WEST 11-19 MPH. TRANSPORT WINDS.....NORTHWEST 20-28 MPH. MIXING HEIGHT.......3200-4200 FT AGL UNTIL 2100...THEN 1600-2600 FT AGL. SMOKE DISPERSAL.....GOOD UNTIL 2000...THEN POOR. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .WEDNESDAY... SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SNOW AFTER 1700. MAX TEMPERATURE.....32-39. MIN HUMIDITY........35-45%. WIND (20 FT)........WEST 13-19 MPH. TRANSPORT WINDS.....WEST 12-20 MPH. MIXING HEIGHT.......2800-3800 FT AGL UNTIL 1100...THEN 5600-6600 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... .THURSDAY...MOSTLY CLOUDY. CHANCE OF SNOW. LOWS AROUND 20. HIGHS AROUND 30. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. .FRIDAY...SNOW LIKELY UNTIL 0600...THEN CHANCE OF SNOW UNTIL 1200...THEN SLIGHT CHANCE OF SNOW UNTIL 1800. LOWS AROUND 16. HIGHS IN THE MID 20S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. .SATURDAY...MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW AFTER 1800. LOWS AROUND 17. HIGHS IN THE UPPER 20S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. EXPERIMENTAL FIRE WEATHER TABLE FOR PORTER RANCH 5. +++ 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 02/16-10 32 0 24 49 W 8 1 3321 NW 17 60041 G 02/16-11 23 0 27 47 NW 7 7 3 1 N35 4647 NW 22 87780 G 02/16-12 23 0 29 43 W 6 1 5026 NW 22 93900 G 02/16-13 23 0 31 40 W 6 1 5404 NW 22 100020 V 02/16-14 23 0 32 39 W 5 5 3 1 N33 5783 NW 21 106140 V 02/16-15 23 0 32 39 W 5 1 5591 NW 22 104545 V 02/16-16 23 0 31 40 W 6 1 5399 NW 22 102949 V 02/16-17 23 0 31 41 W 7 7 3 1 N35 5207 NW 22 101354 V 02/16-18 23 0 30 43 W 8 1 4443 NW 21 83567 G 02/16-19 23 0 29 45 W 10 1 3680 NW 20 65780 G 02/16-20 23 0 28 47 W 10 10 3 1 N38 2917 NW 18 47993 F 02/16-21 23 0 27 48 W 12 1 2664 NW 22 49092 F 02/16-22 23 0 27 49 W 13 1 2411 NW 24 50190 F 02/16-23 29 0 26 51 W 14 22 4 1 N37 2158 NW 28 51289 F 02/17-00 29 0 26 50 W 14 1 1959 NW 26 45780 F 02/17-01 29 0 26 50 W 14 1 1760 NW 26 40272 F 02/17-02 29 0 25 49 W 15 24 4 1 N40 1560 NW 25 34763 P 02/17-03 29 0 25 50 W 15 1 1506 NW 24 31922 P 02/17-04 29 0 25 52 W 15 1 1451 NW 23 29080 P 02/17-05 63 0 25 40 W 16 25 3 1 NW32 1396 NW 22 26238 P 02/17-06 63 0 25 42 W 16 1 1837 W 16 25520 P 02/17-07 63 0 26 43 W 16 1 2064 W 16 27948 P 02/17-08 63 0 28 42 W 16 25 3 1 NW32 2291 W 15 30376 P 02/17-09 63 0 30 40 W 16 1 3303 W 15 44550 F 02/17-10 63 0 32 39 W 15 1 4315 W 16 58724 F 02/17-11 63 5 33 38 W 15 24 3 1 NW28 5327 W 16 72898 G 02/17-12 63 5 35 37 W 14 1 5750 W 16 77865 G 02/17-13 63 5 35 37 W 14 1 6173 W 15 82831 G 02/17-14 63 5 36 37 W 13 13 3 1 NW28 6597 NW 15 87797 G 02/17-15 63 5 36 38 W 12 1 6444 NW 15 82061 G 02/17-16 63 5 35 40 W 10 1 6291 NW 14 76325 G 02/17-17 83 25 32 43 W 10 10 3 1 NW28 6138 NW 14 70589 G 02/17-18 83 25 31 46 W 10 1 5496 NW 12 58917 F 02/17-19 83 25 29 49 W 10 1 4855 W 10 47245 F 02/17-20 83 25 28 52 W 10 10 3 1 NW26 4213 W 9 35573 P 02/17-21 83 25 27 55 W 10 1 3836 W 9 30673 P 02/17-22 83 25 26 56 W 10 1 3458 W 8 25774 P 02/17-23 83 25 29 49 W 10 10 3 1 NW26 3080 W 8 20875 P 02/18-00 83 25 28 51 W 12 1 2772 W 8 20312 P 02/18-01 83 25 27 52 W 12 1 2464 W 9 19750 P 02/18-02 83 25 25 54 W 12 12 3 1 W29 2156 W 10 19187 P 02/18-03 83 25 24 57 W 12 1 2149 W 10 20128 P 02/18-04 83 25 23 58 W 12 1 2141 W 12 21069 P 02/18-05 62 40 22 59 W 12 12 3 1 W30 2133 W 12 22011 P 02/18-06 62 40 23 57 W 9 1 2511 W 12 23679 P 02/18-07 62 40 25 53 W 8 1 2890 W 10 25347 P 02/18-08 62 40 26 50 NW 6 6 3 1 W32 3268 W 9 27015 P 02/18-09 62 40 28 47 NW 3 1 4219 W 10 39148 P 02/18-10 62 40 30 45 NW 2 1 5169 W 12 51282 F 02/18-11 82 48 30 45 CALM 1 3 1 W36 6119 W 12 63415 G 02/18-12 82 48 30 45 CALM 1 6244 W 13 69117 G 02/18-13 82 48 30 45 CALM 1 6368 W 14 74818 G 02/18-14 82 48 30 46 CALM 1 3 1 W40 6493 W 14 80520 G 02/18-15 82 48 30 47 W 2 1 6071 W 14 71417 G 02/18-16 82 48 29 49 SW 2 1 5650 W 13 62314 G 02/18-17 91 46 27 52 SW 3 3 3 1 W45 5228 W 12 53211 F 02/18-18 91 46 26 53 SW 3 1 3867 W 9 37399 P 02/18-19 91 46 24 56 SW 5 1 2507 SW 8 21587 P 02/18-20 91 46 22 60 SW 5 5 3 1 W38 1146 SW 6 5775 P 02/18-21 91 46 21 64 SW 5 1 910 SW 6 4570 P 02/18-22 91 46 20 70 SW 6 1 674 SW 6 3364 P 02/18-23 95 60 19 74 SW 6 6 3 1 W30 437 SW 6 2159 P 02/19-00 95 60 18 77 SW 6 1 428 SW 6 2036 P 02/19-01 95 60 18 79 SW 6 1 418 SW 6 1913 P 02/19-02 95 60 18 79 SW 6 6 3 1 W37 408 SW 5 1790 P 02/19-03 95 60 17 78 W 7 1 492 S 3 1484 P 02/19-04 95 60 16 77 W 7 1 576 E 2 1179 P 02/19-05 86 37 16 76 W 7 7 3 1 W43 659 CALM 874 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...CHAD BUSER REASON FOR REQUEST...PRESCRIBED .TAG 20100216.PORTE.01/BOU