FNUS75 KBOU 171151 FWSBOU SPOT FORECAST FOR SOUTH BLOCK 3 A...USFS NATIONAL WEATHER SERVICE DENVER CO 530 AM MDT FRI SEP 17 2010 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...A RELATIVELY WEAK WESTERLY FLOW ALOFT WILL BE OVER COLORADO TODAY. THE AIRMASS WILL CONTINUE TO BE DRY AND STABLE. THE FIRE DANGER WILL REMAIN HIGH AS TEMPERATURES WILL REMAIN ABOVE SEASONAL NORMALS WITH LOW RELATIVE HUMIDITIES...BUT SURFACE WINDS SHOULD BE RELATIVELY WEAK. AS A RESULT...NO FIRE WEATHER HIGHLIGHTS ARE ANTICIPATED AT THIS TIME. A COLD FRONT IS EXPECTED TO MOVE INTO THE AREA LATE TONIGHT AND SATURDAY MORNING. IT WILL BE MUCH COOLER SATURDAY WITH SIGNIFICANTLY HIGHER RELATIVE HUMIDITIES VS. THOSE FOR TODAY. ...THUNDERSTORMS IMPLY STRONG...GUSTY AND ERRATIC WINDS... .TODAY... SKY/WEATHER.........SUNNY UNTIL 1200...THEN PARTLY CLOUDY. MAX TEMPERATURE.....87-89. MIN HUMIDITY........11-13%. 20-FOOT WINDS.......UPSLOPE/UPVALLEY 4-8 MPH UNTIL 1200...THEN EAST 7-13 MPH. TRANSPORT WINDS.....LIGHT WINDS. MIXING HEIGHT.......1000 FT AGL AFTER 0900 UNTIL 1000...THEN 4000 FT AGL UNTIL 1100...THEN 7000 FT AGL UNTIL 1200...THEN 10600-11600 FT AGL UNTIL 1500...THEN 13400 FT AGL UNTIL 1600...THEN 9200 FT AGL UNTIL 1700...THEN 5000 FT AGL. SMOKE DISPERSAL.....POOR UNTIL 1100...THEN FAIR UNTIL 1200...THEN GOOD UNTIL 1700...THEN POOR. HAINES INDEX........6 HIGH. .TONIGHT... SKY/WEATHER.........MOSTLY CLEAR. MIN TEMPERATURE.....50-52. MAX HUMIDITY........63-66%. 20-FOOT WINDS.......EAST WINDS 8-12 MPH UNTIL 2100...THEN DOWNSLOPE/DOWNVALLEY 2-8 MPH. TRANSPORT WINDS.....LIGHT WINDS. MIXING HEIGHT.......1000 FT AGL UNTIL 1900. SMOKE DISPERSAL.....POOR. HAINES INDEX........6 HIGH. .SATURDAY... SKY/WEATHER.........CLOUDY UNTIL 1200...THEN PARTLY CLOUDY(50-60%). PATCHY FOG AND DRIZZLE UNTIL 1200. MAX TEMPERATURE.....69-72. MIN HUMIDITY........39-42%. 20-FOOT WINDS.......UPSLOPE/UPVALLEY 4-10 MPH UNTIL 1200...THEN EAST 8-12 MPH. TRANSPORT WINDS.....LIGHT WINDS. MIXING HEIGHT.......1400-2400 FT AGL. SMOKE DISPERSAL.....POOR. HAINES INDEX........5 MODERATE. .FORECAST DAYS 3 THROUGH 5... .SUNDAY...MOSTLY CLEAR. WARMER. LOWS IN THE MID 50S. HIGHS IN THE UPPER 80S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. .MONDAY...MOSTLY CLEAR. SLIGHT CHANCE OF THUNDERSTORMS AFTER 1200. LOWS IN THE MID 50S. HIGHS IN THE UPPER 80S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. .TUESDAY...MOSTLY CLEAR. SLIGHT CHANCE OF THUNDERSTORMS AFTER 1200. NOT AS WARM. LOWS IN THE LOWER 50S. HIGHS IN THE UPPER 70S. SOUTHEAST WINDS AROUND 9 MPH. FIRE WEATHER TABLE FOR SOUTH BLOCK 3 A. +++ DATA IN THE FOLLOWING TABLE HAS BEEN SAMPLED DIRECTLY FROM THE FORECAST DATABASE. VALUES IN THE TABLE MAY VARY SLIGHTLY FROM INFORMATION IN THE NARRATIVE 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 09/17-05 1 0 58 41 S 7 1 170 S 7 1053 P 09/17-06 1 0 59 36 S 7 7 5 1 W17 184 S 7 1109 P 09/17-07 1 0 61 32 S 7 1 474 SW 7 2458 P 09/17-08 1 0 66 25 SW 6 1 763 SW 6 3807 P 09/17-09 1 0 72 20 SW 6 6 5 1 NW21 1052 SW 6 5155 P 09/17-10 1 0 78 15 S 6 1 4001 SW 7 31098 P 09/17-11 1 0 81 13 SE 7 1 6951 W 8 57041 F 09/17-12 32 0 84 12 E 7 7 4 1 W22 9900 W 9 82984 G 09/17-13 32 0 86 11 E 7 1 11053 W 9 89157 G 09/17-14 32 0 87 11 E 8 1 12207 W 9 95331 G 09/17-15 32 0 88 11 E 8 8 6 1 W20 13360 W 9 101505 V 09/17-16 32 0 87 11 E 8 1 9221 W 8 69107 G 09/17-17 32 0 85 12 E 8 1 5083 N 7 36709 P 09/17-18 18 0 85 13 E 8 8 6 1 SW14 945 NE 6 4311 P 09/17-19 18 0 79 16 E 7 1 680 E 6 3129 P 09/17-20 18 0 73 21 E 6 1 415 E 6 1948 P 09/17-21 18 0 70 25 SE 5 5 6 1 W14 150 E 6 767 P 09/17-22 18 0 68 29 SE 5 1 148 SE 6 715 P 09/17-23 18 0 66 33 S 6 1 146 S 6 663 P 09/18-00 34 0 62 39 S 7 7 6 1 SW24 144 S 5 612 P 09/18-01 34 0 59 44 S 7 1 174 SW 5 741 P 09/18-02 34 0 57 48 SW 7 1 204 SW 5 870 P 09/18-03 34 0 55 52 SW 7 7 5 1 W28 234 W 5 998 P 09/18-04 34 0 55 55 SW 6 1 371 W 5 1374 P 09/18-05 34 0 54 59 SW 3 1 509 NW 5 1749 P 09/18-06 85 6 58 55 S 2 2 5 1 W22 1036 NW 5 3681 P 09/18-07 85 6 59 59 S 2 1 1281 NW 3 3053 P 09/18-08 85 6 60 62 SE 2 1 1526 NW 2 2424 P 09/18-09 85 6 63 65 SE 3 3 5 1 W18 1771 CALM 1796 P 09/18-10 85 6 65 61 SE 5 1 1891 CALM 2886 P 09/18-11 85 6 67 56 E 7 1 2011 NE 2 3975 P 09/18-12 53 0 69 52 E 8 8 5 1 W17 2131 E 2 5065 P 09/18-13 53 0 70 46 E 9 1 2169 E 3 7635 P 09/18-14 53 0 71 42 E 9 1 2207 E 6 10205 P 09/18-15 53 0 71 39 E 9 9 5 1 W24 2245 E 7 12775 P 09/18-16 53 0 72 39 E 9 1 2272 E 7 12988 P 09/18-17 53 0 71 43 NE 9 1 2300 E 7 13201 P 09/18-18 34 0 70 46 NE 9 9 4 1 W23 2327 E 7 13414 P 09/18-19 34 0 69 49 E 7 1 2127 E 6 11499 P 09/18-20 34 0 68 51 E 5 1 1926 SE 6 9583 P 09/18-21 34 0 67 52 SE 3 3 3 1 W21 1726 SE 5 7668 P 09/18-22 34 0 66 52 SE 3 1 1612 SE 5 6575 P 09/18-23 34 0 65 52 S 3 1 1497 SW 5 5483 P 09/19-00 24 0 65 52 SW 5 5 4 1 SW20 1383 SW 3 4390 P 09/19-01 24 0 63 54 SW 6 1 1277 SW 5 4616 P 09/19-02 24 0 63 54 SW 7 1 1172 SW 5 4843 P 09/19-03 24 0 62 54 SW 8 8 5 1 W21 1066 W 6 5069 P 09/19-04 24 0 62 54 SW 8 1 1082 W 6 5395 P 09/19-05 24 0 56 63 SW 7 1 1099 SW 6 5722 P 09/19-06 16 0 67 41 SW 6 6 5 1 W16 1116 SW 6 6048 P 09/19-07 16 0 67 38 SW 6 1 1190 SW 6 5979 P 09/19-08 16 0 70 32 SW 5 1 1265 SW 6 5909 P 09/19-09 16 0 74 26 S 5 5 5 1 W15 1340 SW 5 5840 P 09/19-10 16 0 78 21 S 5 1 3441 SW 5 13904 P 09/19-11 16 0 82 17 SE 5 1 5542 SW 5 21968 P 09/19-12 10 0 84 15 E 5 5 5 1 W16 7644 SW 5 30032 P 09/19-13 10 0 86 14 E 6 1 8399 SW 6 42368 F 09/19-14 10 0 88 14 SE 8 1 9155 S 7 54705 F 09/19-15 10 0 88 13 SE 9 9 5 1 W20 9911 S 8 67041 G 09/19-16 10 0 89 13 SE 10 1 7258 S 9 50996 F 09/19-17 10 0 88 14 SE 10 1 4605 SE 10 34952 P 09/19-18 5 0 86 15 SE 10 10 6 1 SW16 1952 SE 12 18908 P 09/19-19 5 0 83 17 SE 10 1 1590 SE 15 18079 P 09/19-20 5 0 80 20 SE 10 1 1228 S 18 17250 P 09/19-21 5 0 78 22 S 10 10 5 1 SW14 865 S 22 16421 P 09/19-22 5 0 76 24 S 9 1 881 S 20 14565 P 09/19-23 5 0 75 25 S 7 1 897 S 16 12709 P 09/20-00 5 0 73 26 S 6 6 5 1 SW16 913 SW 14 10852 P 09/20-01 5 0 70 29 SW 5 1 914 SW 12 8716 P 09/20-02 5 0 69 30 SW 5 1 915 W 8 6579 P 09/20-03 5 0 68 33 SW 5 5 5 1 SW18 916 W 6 4442 P 09/20-04 5 0 67 34 SW 5 1 894 W 5 3938 P 09/20-05 5 0 54 53 SW 6 1 871 W 5 3433 P 09/20-06 16 0 65 36 SW 6 6 5 1 SW18 848 SW 3 2928 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...JASON FALLON REASON FOR REQUEST...PRESCRIBED .TAG 20100917.SOUTH.01/BOU