FNUS75 KBOU 080038 FWSBOU SPOT FORECAST FOR BOULDER COUNTY FIRE...COUNTY NATIONAL WEATHER SERVICE DENVER CO 535 PM MST WED JAN 7 2009 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...STRONG NORTHWEST FLOW ALOFT WILL BE OVER THE AREA OVERNIGHT WITH SOME WEAKENING EXPECTED ON THURSDAY. DRY CONDITIONS ARE EXPECTED WITH LITTLE HUMIDITY RECOVERY TONIGHT AND WARMER TEMPERATURES AND LOWER HUMIDITY THURSDAY. WINDS SHOULD NOT BE AS STRONG ON THURSDAY AS THOSE EXPERIENCED ON WEDNESDAY. WINDS OVERNIGHT WILL GENERALLY BE FROM THE WEST AND NORTHWEST BUT THERE MAY BE ERRATIC SHIFTS TO THE EAST AT TIMES AS ROTORS SPIN OFF THE MOUNTAINS FROM TIME TO TIME. ...THUNDERSTORMS IMPLY STRONG...GUSTY AND ERRATIC WINDS... .TONIGHT... SKY/WEATHER.........MOSTLY CLEAR. MIN TEMPERATURE.....45. MAX HUMIDITY........36%. 20-FOOT WINDS.......WEST TO NORTHWEST 20-25 MPH WITH GUSTS TO AROUND 50 MPH UNTIL 2100...THEN WEST 15-25 MPH WITH OCCASIONAL GUSTS TO 35 MPH. TRANSPORT WINDS.....WEST 36-52 MPH UNTIL 2400...THEN 25-36 MPH. MIXING HEIGHT.......1600-2600 FT AGL. SMOKE DISPERSAL.....EXCELLENT UNTIL 1900. POOR AFTER 0200. HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .THURSDAY... SKY/WEATHER.........MOSTLY SUNNY UNTIL 1200...THEN PARTLY CLOUDY. MAX TEMPERATURE.....62. MIN HUMIDITY........20%. 20-FOOT WINDS.......WEST 13-22 MPH...OCCASIONAL GUSTS TO 30 MPH. TRANSPORT WINDS.....WEST 20-24 MPH UNTIL 1200...THEN 32-40 MPH. MIXING HEIGHT.......2600-3600 FT AGL. SMOKE DISPERSAL.....POOR UNTIL 0900...THEN FAIR UNTIL 1000...THEN GOOD UNTIL 1200...THEN VERY GOOD UNTIL 1400...THEN EXCELLENT UNTIL 1500...THEN VERY GOOD UNTIL 1600...THEN GOOD. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .THURSDAY NIGHT... SKY/WEATHER.........PARTLY CLOUDY(40-50%). SLIGHT CHANCE OF SNOW AFTER 2300. SLIGHT CHANCE OF RAIN AFTER 0500. MIN TEMPERATURE.....33. MAX HUMIDITY........49%. 20-FOOT WINDS.......WEST 14-24 MPH WITH GUSTS TO AROUND 30 MPH. TRANSPORT WINDS.....WEST 21-32 MPH. MIXING HEIGHT.......3200-4000 FT AGL UNTIL 2000...THEN 1600-2600 FT AGL UNTIL 0300...THEN 3800-4800 FT AGL UNTIL 0500...THEN 5800 FT AGL. SMOKE DISPERSAL.....VERY GOOD UNTIL 1900...THEN GOOD UNTIL 2000...THEN FAIR UNTIL 2200...THEN POOR UNTIL 0100...THEN FAIR UNTIL 0300...THEN GOOD UNTIL 0400...THEN VERY GOOD UNTIL 0500...THEN EXCELLENT. HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .FRIDAY... SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN UNTIL 1700. SLIGHT CHANCE OF SNOW. MAX TEMPERATURE.....40. MIN HUMIDITY........34%. 20-FOOT WINDS.......BREEZY. NORTHWEST 15-25 MPH. TRANSPORT WINDS.....NORTHWEST 24-32 MPH. MIXING HEIGHT.......6800-7800 FT AGL. SMOKE DISPERSAL.....EXCELLENT UNTIL 1700...THEN VERY GOOD. HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. EXPERIMENTAL FIRE WEATHER TABLE FOR BOULDER COUNTY 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 01/07-17 45 7 52 30 W 35 48 2 1 NW52 3715 W 58 185730 E 01/07-18 45 7 51 30 W 37 1 3332 W 53 155765 E 01/07-19 45 7 50 30 W 35 1 2948 W 48 125801 V 01/07-20 45 7 50 30 W 33 46 3 1 NW38 2565 W 43 95836 G 01/07-21 45 7 49 30 W 32 1 2395 W 41 86166 G 01/07-22 45 7 48 31 W 31 1 2226 W 39 76496 G 01/07-23 15 0 48 31 W 28 39 3 1 NW14 2056 W 38 66825 G 01/08-00 15 0 47 32 W 26 1 1933 W 36 59494 F 01/08-01 15 0 47 32 W 24 1 1811 W 33 52163 F 01/08-02 15 0 47 33 W 23 32 3 1 NW13 1688 W 31 44831 F 01/08-03 15 0 46 34 W 22 1 1582 W 28 38796 P 01/08-04 15 0 46 35 W 20 1 1475 W 25 32762 P 01/08-05 23 0 46 36 W 16 23 3 1 NW14 1369 W 23 26727 P 01/08-06 23 0 46 34 W 16 1 1390 W 22 26154 P 01/08-07 23 0 47 34 W 15 1 1410 W 21 25580 P 01/08-08 23 0 49 32 W 15 21 2 1 W17 1431 W 20 25006 P 01/08-09 23 0 52 29 W 15 1 2273 W 21 43326 F 01/08-10 23 0 54 27 W 16 1 3114 W 22 61646 G 01/08-11 31 0 57 24 W 17 24 3 1 NW51 3956 W 23 79966 G 01/08-12 31 0 59 22 W 17 1 4105 W 30 107205 V 01/08-13 31 0 61 21 W 18 1 4255 W 36 134444 V 01/08-14 31 0 61 20 W 18 25 4 1 NW48 4404 W 43 161683 E 01/08-15 31 0 60 20 W 18 1 3571 W 40 128583 V 01/08-16 31 0 58 21 W 20 1 2739 W 39 95482 G 01/08-17 39 0 53 25 W 18 25 4 1 W55 1906 W 38 62381 G 01/08-18 39 0 50 29 W 16 1 4068 W 28 104152 V 01/08-19 39 0 47 31 W 15 1 3237 W 25 74849 G 01/08-20 39 0 45 33 W 15 21 2 1 W61 2407 W 22 45547 F 01/08-21 39 0 43 36 W 15 1 2026 W 21 37668 P 01/08-22 39 0 41 38 W 16 1 1646 W 21 29790 P 01/08-23 48 10 40 41 W 17 24 2 1 W59 1265 W 20 21912 P 01/09-00 48 10 38 43 W 18 1 1767 W 21 33325 P 01/09-01 48 10 37 45 W 18 1 2268 W 22 44739 F 01/09-02 48 10 36 47 W 18 25 2 1 W56 2769 W 23 56152 F 01/09-03 48 10 36 48 W 20 1 3793 W 26 89958 G 01/09-04 48 10 35 49 W 21 1 4816 W 29 123764 V 01/09-05 63 10 35 49 W 22 31 2 1 W53 5840 W 31 157570 E 01/09-06 63 10 35 48 W 22 1 5883 NW 30 153661 E 01/09-07 63 10 34 49 W 21 1 5927 NW 29 149753 V 01/09-08 63 10 35 46 W 20 28 2 1 NW44 5970 NW 28 145844 V 01/09-09 63 10 36 43 W 21 1 6537 NW 28 157707 E 01/09-10 63 10 37 40 W 22 1 7104 NW 28 169571 E 01/09-11 79 10 38 38 W 22 31 2 1 NW35 7671 NW 28 181434 E 01/09-12 79 10 39 36 NW 21 1 7985 NW 28 187847 E 01/09-13 79 10 40 34 NW 18 1 8299 NW 26 194260 E 01/09-14 79 10 40 34 NW 17 24 2 1 N33 8613 NW 26 200674 E 01/09-15 79 10 39 34 NW 16 1 7776 NW 25 176014 E 01/09-16 79 10 38 35 NW 16 1 6940 NW 25 151354 E 01/09-17 74 10 34 40 W 15 21 2 1 N31 6103 N 24 126695 V 01/09-18 74 10 32 42 W 16 1 5671 NW 23 112086 V 01/09-19 74 10 30 44 W 16 1 5239 NW 21 97477 G 01/09-20 74 10 28 45 W 16 23 2 1 N31 4807 NW 20 82868 G 01/09-21 74 10 27 46 W 14 1 3838 NW 17 62021 G 01/09-22 74 10 26 47 W 12 1 2869 W 15 41173 F 01/09-23 58 1 25 48 W 9 9 2 1 N30 1900 W 13 20325 P 01/10-00 58 1 24 50 W 9 1 1633 W 13 17696 P 01/10-01 58 1 23 51 W 9 1 1366 W 13 15066 P 01/10-02 58 1 22 53 W 9 9 3 1 NW29 1099 W 13 12436 P 01/10-03 58 1 22 54 W 9 1 1062 W 14 12615 P 01/10-04 58 1 21 55 W 9 1 1025 W 15 12794 P 01/10-05 36 0 21 55 W 9 9 4 1 NW26 988 W 15 12972 P 01/10-06 36 0 21 56 W 9 1 987 W 15 13029 P 01/10-07 36 0 22 54 W 10 1 986 W 15 13085 P 01/10-08 36 0 24 49 W 10 10 4 1 NW29 984 W 15 13141 P 01/10-09 36 0 27 43 W 9 1 1468 W 16 22166 P 01/10-10 36 0 30 38 W 9 1 1952 W 17 31191 P 01/10-11 36 0 33 34 W 9 9 4 1 NW31 2436 W 20 40217 F 01/10-12 36 0 36 31 W 12 1 2709 W 21 48242 F 01/10-13 36 0 37 28 W 14 1 2981 W 22 56268 F 01/10-14 36 0 38 28 W 16 23 4 1 NW33 3254 W 23 64293 G 01/10-15 36 0 37 28 W 17 1 2821 W 23 55684 F 01/10-16 36 0 36 29 W 16 1 2389 W 23 47075 F 01/10-17 32 0 32 34 W 16 23 4 1 NW35 1956 W 23 38465 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...NWS REASON FOR REQUEST...WILDFIRE .TAG 20090107.BOULD.01/BOU