FNUS75 KBOU 201049 FWSBOU SPOT FORECAST FOR ONAHU...USFS NATIONAL WEATHER SERVICE DENVER CO 449 AM MDT MON SEP 20 2010 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS EVENING... .DISCUSSION...THE UPPER LEVEL RIDGE WILL BE PUSHED EAST OF THE AREA BY A WEAK UPPER LEVEL TROUGH TODAY. THIS WILL CAUSE WINDS ALOFT TO INCREASE. THESE STRONG WINDS ALOFT WILL MIX DOWN TO THE SURFACE. GUSTS UP TO 40 MPH WILL BE POSSIBLE THIS AFTERNOON. THE UPPER LEVEL TROUGH WILL INCREASE MID LEVEL MOISTURE AND INSTABILITY RESULTING IN A SLIGHT CHANCE FOR THUNDERSTORMS. BECAUSE OF THE DRY LOW LEVELS...ANY STORM THAT FORM MAY BE DRY AND WILL LIKELY PRODUCE GUSTY OUTFLOW WINDS. TUESDAY WILL BE SLIGHTLY COOLER WITH HUMIDITIES A LITTLE HIGHER. WINDS WILL BE LIGHT TUESDAY MORNING BECOMING SOUTHWEST WITH GUSTS UP TO 20 MPH IN THE AFTERNOON. ...THUNDERSTORMS IMPLY STRONG...GUSTY AND ERRATIC WINDS... .TODAY... SKY/WEATHER.........MOSTLY SUNNY UNTIL 1200...THEN PARTLY CLOUDY(50-60%). SLIGHT CHANCE OF THUNDERSTORMS A FEW DRY AFTER 1200. MAX TEMPERATURE.....72-76. MIN HUMIDITY........11-16%. 20-FOOT WINDS.......WINDY. DOWNVALLEY 2-7 MPH UNTIL 0900 THEN BECOMING SOUTHWEST 5-15 MPH WITH GUSTS TO 25 MPH UNTIL NOON THEN SOUTHWEST 15-25 MPH WITH GUSTS TO 40 MPH. TRANSPORT WINDS.....SOUTHWEST 17-28 MPH UNTIL 1200...THEN WEST AROUND 36 MPH. MIXING HEIGHT.......BELOW 1000 FT AGL UNTIL 0700. 8800-9800 FT AGL AFTER 1200. SMOKE DISPERSAL.....POOR UNTIL 0900...THEN FAIR UNTIL 1000...THEN VERY GOOD UNTIL 1100...THEN EXCELLENT. HAINES INDEX........5 MODERATE. .TONIGHT... SKY/WEATHER.........MOSTLY CLEAR. SLIGHT CHANCE OF THUNDERSTORMS UNTIL 2400. MIN TEMPERATURE.....25-30. MAX HUMIDITY........80-90%. 20-FOOT WINDS.......WEST WINDS 10-16 MPH WITH GUSTS TO 25 MPH UNTIL 2100...THEN DOWNSLOPE/DOWNVALLEY 2-8 MPH. TRANSPORT WINDS.....WEST 16-24 MPH UNTIL 2400...THEN SOUTHWEST 4-8 MPH. MIXING HEIGHT.......7000 FT AGL UNTIL 1900. BELOW 1000 FT AGL AFTER 2100. SMOKE DISPERSAL.....EXCELLENT UNTIL 1900. POOR AFTER 2100. HAINES INDEX........4 LOW. .TUESDAY... SKY/WEATHER.........MOSTLY SUNNY. MAX TEMPERATURE.....70-75. MIN HUMIDITY........14-20%. 20-FOOT WINDS.......LIGHT AND VARIABLE UNTIL 1200 THEN SOUTHWEST 7-13 MPH WITH GUSTS TO 20 MPH. TRANSPORT WINDS.....SOUTHWEST 8-16 MPH UNTIL 1200...THEN WEST 20-28 MPH. MIXING HEIGHT.......BELOW 1000 FT AGL UNTIL 1000. 6400-7400 FT AGL AFTER 1200. SMOKE DISPERSAL.....POOR UNTIL 1000. VERY GOOD AFTER 1200. HAINES INDEX........4 LOW. .FORECAST DAYS 3 THROUGH 5... .WEDNESDAY...PARTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS AFTER 1200. LOWS IN THE MID 30S. HIGHS IN THE LOWER 70S. SOUTH WINDS AROUND 5 MPH. .THURSDAY...PARTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS UNTIL 0600. LOWS IN THE MID 30S. HIGHS IN THE MID 60S. WEST WINDS AROUND 5 MPH. .FRIDAY...MOSTLY CLEAR. LOWS IN THE MID 30S. HIGHS IN THE LOWER 70S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. FIRE WEATHER TABLE FOR ONAHU. +++ 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 09/20-04 18 0 50 32 SW 8 1 304 SW 13 3265 P 09/20-05 18 0 50 33 SW 8 1 328 SW 13 3712 P 09/20-06 9 0 51 34 SW 9 9 3 1 SW24 351 SW 14 4159 P 09/20-07 9 0 50 35 SW 8 1 975 SW 16 17145 P 09/20-08 9 0 52 34 SW 8 1 1598 SW 20 30131 P 09/20-09 22 0 57 30 SW 9 9 3 1 SW25 2222 W 22 43116 F 09/20-10 22 0 62 26 SW 13 1 4191 W 28 119143 V 09/20-11 22 0 67 24 W 16 1 6160 W 33 195169 E 09/20-12 46 11 70 22 W 20 31 5 2 SW35 8130 W 38 271196 E 09/20-13 46 11 72 19 W 23 2 8938 W 38 296684 E 09/20-14 46 11 73 17 W 25 2 9746 W 38 322172 E 09/20-15 53 11 74 15 W 25 40 5 2 SW46 10554 W 38 347661 E 09/20-16 53 11 75 15 W 23 2 9353 W 36 297269 E 09/20-17 53 11 72 18 W 20 2 8152 W 35 246878 E 09/20-18 40 11 65 25 W 16 25 4 2 W49 6952 W 32 196487 E 09/20-19 40 11 59 32 W 13 2 4728 W 25 131895 V 09/20-20 40 11 52 43 W 10 2 2504 W 18 67303 G 09/20-21 40 11 47 55 W 8 8 3 2 W46 280 W 12 2711 P 09/20-22 40 11 45 59 NW 7 2 284 W 10 2490 P 09/20-23 40 11 44 57 NW 6 2 289 NW 9 2269 P 09/21-00 18 1 44 55 NW 6 6 3 1 W46 293 NW 8 2048 P 09/21-01 18 1 43 55 W 5 1 265 W 7 1646 P 09/21-02 18 1 41 55 SW 5 1 237 SW 6 1245 P 09/21-03 18 1 40 56 SW 3 3 2 1 W47 209 SW 5 843 P 09/21-04 18 1 38 62 SW 3 1 204 SW 5 869 P 09/21-05 18 1 37 67 SW 3 1 199 SW 6 895 P 09/21-06 25 8 37 71 S 3 3 2 1 W47 194 SW 6 921 P 09/21-07 25 8 38 70 SW 6 1 316 SW 7 2322 P 09/21-08 25 8 39 68 SW 7 1 438 SW 9 3723 P 09/21-09 25 8 42 61 SW 9 15 2 1 W39 560 SW 10 5124 P 09/21-10 25 8 47 50 SW 10 1 2213 SW 16 48358 F 09/21-11 25 8 54 38 SW 12 1 3866 W 22 91572 G 09/21-12 23 2 60 31 W 13 21 4 1 W35 5519 W 28 134787 V 09/21-13 23 2 64 27 W 13 1 6178 W 28 144707 V 09/21-14 23 2 66 25 W 13 1 6836 W 26 154628 E 09/21-15 23 2 67 24 W 13 21 3 1 W22 7495 W 25 164548 E 09/21-16 23 2 67 24 W 13 1 7389 W 24 152114 E 09/21-17 23 2 67 24 W 12 1 7283 W 22 139679 V 09/21-18 26 2 67 24 W 10 16 2 1 SW18 7177 SW 21 127245 V 09/21-19 26 2 60 30 W 9 1 5050 SW 16 86826 G 09/21-20 26 2 56 35 SW 7 1 2924 SW 13 46407 F 09/21-21 26 2 52 42 SW 6 6 2 1 SW23 798 SW 9 5988 P 09/21-22 26 2 48 48 SW 3 1 597 SW 7 4173 P 09/21-23 26 2 45 54 SW 2 1 396 SW 5 2359 P 09/22-00 18 3 42 60 CALM 1 2 1 SW32 195 SW 3 545 P 09/22-01 18 3 40 62 CALM 1 188 SW 3 561 P 09/22-02 18 3 39 64 CALM 1 181 SW 3 578 P 09/22-03 18 3 38 64 CALM 1 2 1 SW35 174 SW 3 595 P 09/22-04 18 3 37 65 S 2 1 172 SW 5 674 P 09/22-05 18 3 36 65 S 2 1 169 S 5 754 P 09/22-06 34 3 35 64 S 3 3 2 1 SW33 166 S 6 833 P 09/22-07 34 3 37 60 S 5 1 273 S 7 1693 P 09/22-08 34 3 40 53 S 6 1 380 S 7 2553 P 09/22-09 34 3 45 46 S 6 6 2 1 W38 487 S 8 3413 P 09/22-10 34 3 51 36 S 7 1 2566 SW 12 39962 P 09/22-11 34 3 59 28 S 8 1 4645 SW 16 76512 G 09/22-12 56 10 65 23 SW 8 13 2 2 W41 6724 SW 20 113061 V 09/22-13 56 10 68 21 SW 8 2 7276 SW 18 117338 V 09/22-14 56 10 70 19 S 7 2 7828 SW 18 121614 V 09/22-15 56 10 71 19 S 7 7 2 2 S37 8380 S 17 125891 V 09/22-16 56 10 71 19 S 6 2 7873 S 22 142750 V 09/22-17 56 10 70 20 S 5 2 7366 S 25 159610 E 09/22-18 56 10 68 22 S 5 5 2 2 SW44 6859 S 30 176469 E 09/22-19 56 10 62 29 S 5 2 5869 SW 28 144054 V 09/22-20 56 10 56 37 S 5 2 4878 SW 25 111639 V 09/22-21 56 10 53 43 S 6 6 2 2 SW36 3887 SW 23 79224 G 09/22-22 56 10 51 47 S 6 2 2921 SW 18 55630 F 09/22-23 56 10 49 50 S 6 2 1955 S 14 32036 P 09/23-00 43 10 45 55 S 6 6 2 1 SW35 989 S 10 8442 P 09/23-01 43 10 43 60 S 6 1 780 SW 8 6009 P 09/23-02 43 10 41 64 SE 5 1 571 SW 6 3576 P 09/23-03 43 10 39 66 E 3 3 2 1 W38 362 SW 3 1142 P 09/23-04 43 10 38 63 NE 3 1 368 SW 5 1309 P 09/23-05 43 10 38 60 N 2 1 373 W 5 1475 P 09/23-06 38 0 37 59 N 2 2 2 1 SW45 379 W 5 1641 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...FIRE OPERATIONS REASON FOR REQUEST...WILDFIRE .TAG 20100919.ONAHU.01/BOU