FNUS75 KBOU 191253 FWSBOU SPOT FORECAST FOR BOBCAT RIDGE...USFS NATIONAL WEATHER SERVICE DENVER CO 553 AM MST THU FEB 19 2009 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...WESTERLY WINDS WILL PICK UP AROUND NOON AND CONTINUE TO SLOWLY INCREASE THROUGH THE AFTERNOON AS WINDS ALOFT INCREASE AND A TROUGH DEEPENS OVER THE PLAINS. WINDS WILL BE STRONGEST OVERNIGHT THROUGH FRIDAY MORNING...THEN START TO DECREASE. THE STRONG WINDS WILL CAUSE RH RECOVERIES TONIGHT TO ONLY INCREASE IN THE 45-50% RANGE. A SLIGHT CHANCE OF SNOW WILL ARRIVE FRIDAY AFTERNOON THROUGH FRIDAY NIGHT...WITH LITTLE ACCUMULATION EXPECTED. THIS WEEKEND WILL SEE A WARMING AND DRYING TREND WITH LIGHT WINDS. ...THUNDERSTORMS IMPLY STRONG...GUSTY AND ERRATIC WINDS... .TODAY... SKY/WEATHER.........PARTLY CLOUDY(30-40%) UNTIL 1700...THEN MOSTLY SUNNY. MAX TEMPERATURE.....44. MIN HUMIDITY........21%. 20-FOOT WINDS.......BREEZY. NORTHWEST 10-15 MPH BECOMING WEST 15-25 MPH WITH GUSTS TO AROUND 35 MPH AFTER 1100. TRANSPORT WINDS.....WEST 17-28 MPH. MIXING HEIGHT.......1400-2400 FT AGL UNTIL 1000...THEN 5000-6000 FT AGL UNTIL 1300...THEN 7400-8400 FT AGL UNTIL 1600...THEN 4600-5600 FT AGL. SMOKE DISPERSAL.....POOR UNTIL 1000. VERY GOOD AFTER 1400. HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .TONIGHT... SKY/WEATHER.........MOSTLY CLEAR. MIN TEMPERATURE.....21. MAX HUMIDITY........48%. 20-FOOT WINDS.......BREEZY. WEST 16-26 MPH WITH GUSTS TO AROUND 35 MPH. TRANSPORT WINDS.....WEST 25-36 MPH UNTIL 2400...THEN 20-24 MPH. MIXING HEIGHT.......2400-3400 FT AGL UNTIL 2000...THEN 400-1400 FT AGL. SMOKE DISPERSAL.....GOOD UNTIL 1900. POOR AFTER 2100. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .FRIDAY... SKY/WEATHER.........MOSTLY SUNNY UNTIL 1200...THEN PARTLY CLOUDY(50-60%) UNTIL 1700...THEN MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW AFTER 1500. MAX TEMPERATURE.....45. MIN HUMIDITY........24%. 20-FOOT WINDS.......WINDY. WEST 24-36 MPH WITH GUSTS TO AROUND 50 MPH. TRANSPORT WINDS.....WEST 32-52 MPH UNTIL 1200...THEN 49-60 MPH. MIXING HEIGHT.......3800-4800 FT AGL. SMOKE DISPERSAL.....POOR UNTIL 0900. EXCELLENT AFTER 1400. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .FORECAST DAYS 3 THROUGH 5... .SATURDAY...MOSTLY CLEAR. SLIGHT CHANCE OF SNOW UNTIL 0600. LOWS IN THE LOWER 20S. HIGHS IN THE LOWER 40S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. .SUNDAY...PARTLY CLOUDY. LOWS IN THE UPPER 20S. HIGHS IN THE LOWER 50S. WEST WINDS AROUND 8 MPH. .MONDAY...PARTLY CLOUDY. LOWS IN THE UPPER 20S. HIGHS IN THE UPPER 50S. WEST WINDS AROUND 8 MPH. EXPERIMENTAL FIRE WEATHER TABLE FOR BOBCAT RIDGE. +++ 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 02/19-04 40 0 22 55 W 25 1 300 W 26 6875 P 02/19-05 33 0 22 55 W 24 39 2 1 N10 320 W 28 7624 P 02/19-06 33 0 23 53 W 22 1 703 W 26 15467 P 02/19-07 33 0 24 50 W 18 1 1087 W 25 23310 P 02/19-08 33 0 27 44 W 15 24 2 1 NW10 1470 W 24 31153 P 02/19-09 33 0 31 38 W 15 1 2872 W 20 39640 P 02/19-10 33 0 34 33 W 14 1 4273 W 16 48127 F 02/19-11 39 0 37 29 W 16 25 2 1 NW17 5675 W 12 56614 F 02/19-12 39 0 39 26 W 16 1 6619 W 13 72012 G 02/19-13 39 0 41 24 W 17 1 7564 W 13 87410 G 02/19-14 39 0 43 23 W 20 31 2 1 NW25 8509 W 14 102807 V 02/19-15 39 0 41 24 W 21 1 7141 W 21 110410 V 02/19-16 39 0 40 25 W 22 1 5773 W 26 118013 V 02/19-17 21 0 37 29 W 23 37 3 1 NW30 4404 W 33 125616 V 02/19-18 21 0 35 33 W 22 1 3383 W 35 98302 G 02/19-19 21 0 32 36 W 23 1 2362 W 36 70987 G 02/19-20 21 0 30 38 W 22 35 4 1 NW38 1341 W 38 43673 F 02/19-21 21 0 28 41 W 21 1 1013 W 33 31565 P 02/19-22 21 0 27 42 W 21 1 686 W 29 19456 P 02/19-23 21 0 26 43 W 20 31 5 1 NW32 359 W 23 7348 P 02/20-00 21 0 24 44 W 18 1 309 W 22 6111 P 02/20-01 21 0 24 44 W 17 1 259 W 21 4875 P 02/20-02 21 0 23 45 W 16 25 5 1 NW40 209 W 20 3638 P 02/20-03 21 0 23 45 W 17 1 199 W 21 3653 P 02/20-04 21 0 22 45 W 20 1 188 W 23 3667 P 02/20-05 27 0 23 48 W 22 35 4 1 NW64 191 W 23 3896 P 02/20-06 27 0 23 47 W 25 1 242 W 29 6401 P 02/20-07 27 0 24 44 W 28 1 292 W 33 8905 P 02/20-08 27 0 28 39 W 30 48 5 1 NW71 342 W 38 11410 P 02/20-09 27 0 31 35 W 31 1 1171 W 43 50153 F 02/20-10 27 0 35 32 W 30 1 2001 W 47 88895 G 02/20-11 27 0 38 29 W 30 48 3 1 W75 2830 W 52 127638 V 02/20-12 54 0 41 26 W 30 1 3552 W 53 164115 E 02/20-13 54 0 42 24 W 30 1 4274 W 54 200592 E 02/20-14 54 0 43 24 W 29 46 3 1 W71 4996 W 54 237069 E 02/20-15 54 10 43 25 W 29 1 4856 W 53 225093 E 02/20-16 54 10 41 28 W 28 1 4717 W 52 213117 E 02/20-17 70 10 38 33 W 25 40 2 1 NW67 4578 W 51 201141 E 02/20-18 70 20 35 37 NW 21 1 4441 W 41 162742 E 02/20-19 70 20 32 42 N 15 1 4304 W 32 124342 V 02/20-20 70 20 30 47 N 10 10 2 1 NW55 4167 NW 24 85942 G 02/20-21 70 20 28 52 N 7 1 4170 W 20 72509 G 02/20-22 70 20 26 56 NE 6 1 4173 W 16 59075 F 02/20-23 70 20 25 59 NE 5 5 2 1 W51 4176 W 13 45642 F 02/21-00 70 20 23 62 N 3 1 3923 NW 14 46459 F 02/21-01 60 20 22 62 NW 3 1 3670 NW 15 47276 F 02/21-02 60 20 22 63 NW 3 3 2 1 NW51 3416 NW 16 48093 F 02/21-03 60 20 21 63 W 5 1 3106 NW 16 44677 F 02/21-04 60 20 21 61 W 5 1 2797 NW 17 41261 F 02/21-05 60 0 21 60 W 6 6 2 1 NW52 2487 NW 17 37845 P 02/21-06 45 0 21 59 W 6 1 2928 NW 21 53569 F 02/21-07 45 0 23 57 W 6 1 3369 NW 23 69294 G 02/21-08 45 0 26 51 W 6 6 2 1 N59 3810 NW 25 85018 G 02/21-09 11 0 30 44 W 6 1 4603 NW 26 105775 V 02/21-10 11 0 34 40 NW 5 1 5395 NW 26 126532 V 02/21-11 11 0 38 36 N 5 5 3 1 N48 6188 NW 28 147288 V 02/21-12 11 0 40 33 NW 5 1 6212 NW 25 136583 V 02/21-13 11 0 42 30 SW 3 1 6235 NW 23 125878 V 02/21-14 11 0 43 29 S 3 3 3 1 N44 6259 NW 21 115173 V 02/21-15 11 0 43 30 SW 3 1 5663 NW 18 94940 G 02/21-16 11 0 42 33 SW 3 1 5068 NW 16 74706 G 02/21-17 11 0 40 36 SW 5 5 3 1 N37 4473 NW 14 54473 F 02/21-18 11 0 38 38 SW 6 1 3550 NW 12 39992 P 02/21-19 11 0 36 40 W 6 1 2627 W 9 25512 P 02/21-20 11 0 35 42 W 7 7 4 1 NW29 1705 W 7 11031 P 02/21-21 11 0 33 43 W 7 1 1348 W 7 8481 P 02/21-22 11 0 32 44 W 8 1 991 W 7 5931 P 02/21-23 11 0 31 44 W 8 8 4 1 NW20 634 W 6 3380 P 02/22-00 11 0 30 45 W 8 1 507 W 7 2931 P 02/22-01 11 0 30 45 W 9 1 380 W 8 2482 P 02/22-02 11 0 29 45 W 9 9 5 1 W18 253 W 9 2033 P 02/22-03 11 0 29 44 W 10 1 236 W 10 2007 P 02/22-04 11 0 29 44 W 10 1 219 W 10 1981 P 02/22-05 33 0 29 43 W 10 10 4 1 W26 202 W 12 1955 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...ANNE BAXTER REASON FOR REQUEST...WILDFIRE .TAG 20090218.BOBCA.01/BOU