FNUS75 KBOU 070844 FWSBOU SPOT FORECAST FOR WEST SIDE EMERSON FIRE...USFS NATIONAL WEATHER SERVICE DENVER CO 244 AM MDT TUE SEP 7 2010 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...SURFACE AND 20-FOOT WIND SPEEDS WILL BE FROM THE WEST SOUTHWEST FROM 4 TO 8 MPH THIS MORNING ALTHOUGH CURRENT OBSERVATIONS NEAR THE FIRE SHOW WIND SPEEDS NEARLY CALM. STRONG COOLING THIS MORNING WITH CLEAR SKIES AND VERY LOW RELATIVE HUMIDITIES WILL PRODUCE STRONG SURFACE BASED INVERSIONS IN VALLEY LOCATIONS. THIS WILL RESULT IN POOR SMOKE DISPERSAL THROUGH LATE MORNING BEFORE IMPROVING BY EARLY AFTERNOON. BY LATE MORNING..LIGHT DRAINAGE WINDS WILL GIVE WAY TO RELATIVELY LIGHT UPSLOPE/UPVALLEY BREEZES BY NOON WITH SPEEDS FROM 5 TO 10 MPH. RELATIVE HUMIDITIES BY THIS AFTERNOON WILL RANGE FROM 12 TO 18%. ...THUNDERSTORMS IMPLY STRONG...GUSTY AND ERRATIC WINDS... .TODAY... SKY/WEATHER.........MOSTLY SUNNY. MAX TEMPERATURE.....70-74. MIN HUMIDITY........12% TO 18%. 20-FOOT WINDS.......WEST SOUTHWEST WINDS 4-8 MPH UNTIL 1000... THEN UPSLOPE/UPVALLEY 5-10 MPH. TRANSPORT WINDS.....WEST 12-20 MPH. MIXING HEIGHT.......7400-8400 FT AGL AFTER 1200. SMOKE DISPERSAL.....POOR UNTIL 1000...THEN FAIR UNTIL 1100...THEN GOOD UNTIL 1200...THEN VERY GOOD UNTIL 1700...THEN GOOD. HAINES INDEX........4 LOW. .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY(40-50%). MIN TEMPERATURE.....50. MAX HUMIDITY........52-56%. 20-FOOT WINDS.......NORTHEAST WINDS 8-13 MPH UNTIL 2100...THEN WEST WITH GUSTS TO 20 MPH. TRANSPORT WINDS.....LIGHT WINDS UNTIL 2400...THEN WEST AROUND 12 MPH. MIXING HEIGHT.......6200 FT AGL UNTIL 1900. SMOKE DISPERSAL.....FAIR UNTIL 1900. POOR AFTER 2100. HAINES INDEX........3 VERY LOW. .WEDNESDAY... SKY/WEATHER.........PARTLY CLOUDY(50-60%) UNTIL 1200...THEN MOSTLY CLOUDY(50-60%). SLIGHT CHANCE OF THUNDERSTORMS. MAX TEMPERATURE.....70-74. MIN HUMIDITY........34-38%. 20-FOOT WINDS.......SOUTHWEST WINDS 8-12 MPH WITH GUSTS TO 20 MPH. TRANSPORT WINDS.....WEST 12-20 MPH. MIXING HEIGHT.......8400-9400 FT AGL AFTER 1200. SMOKE DISPERSAL.....POOR UNTIL 0900...THEN FAIR UNTIL 1000...THEN GOOD UNTIL 1100...THEN VERY GOOD UNTIL 1600...THEN GOOD. HAINES INDEX........2 VERY LOW. .FORECAST DAYS 3 THROUGH 5... .THURSDAY...PARTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS AFTER 1200. LOWS IN THE LOWER 50S. HIGHS IN THE LOWER 70S. WEST WINDS AROUND 13 MPH WITH GUSTS TO 25 MPH. .FRIDAY...PARTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS UNTIL 1200. LOWS IN THE UPPER 40S. HIGHS IN THE UPPER 60S. WEST WINDS AROUND 9 MPH WITH GUSTS TO 20 MPH. .SATURDAY...MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE UPPER 60S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. EXPERIMENTAL FIRE WEATHER TABLE FOR WEST SIDE EMERSON 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 09/07-02 42 0 41 41 W 8 7 1 251 SW 7 1523 P 09/07-03 42 0 41 42 W 7 7 4 1 W36 194 W 6 1051 P 09/07-04 42 0 39 42 W 7 7 1 183 W 7 1026 P 09/07-05 42 0 39 41 W 8 8 1 172 W 7 1000 P 09/07-06 3 0 39 39 W 8 13 4 1 W39 161 W 7 974 P 09/07-07 3 0 41 35 W 8 1 355 W 7 2252 P 09/07-08 3 0 45 30 SW 7 1 549 SW 7 3529 P 09/07-09 3 0 50 26 SW 7 7 4 1 W40 744 SW 7 4807 P 09/07-10 3 0 56 22 S 6 1 2571 SW 12 38357 P 09/07-11 3 0 61 19 SE 5 1 4399 W 16 71907 G 09/07-12 23 0 66 17 SE 5 5 3 1 W44 6226 W 20 105458 V 09/07-13 23 0 68 16 SE 5 1 7200 W 18 112849 V 09/07-14 23 0 70 14 SE 6 1 8173 W 17 120240 V 09/07-15 23 0 71 14 E 6 6 3 1 W35 9146 W 16 127631 V 09/07-16 23 0 72 14 E 7 1 8062 SW 14 97878 G 09/07-17 23 0 71 14 E 7 1 6979 SW 10 68126 G 09/07-18 39 3 68 16 E 8 10 3 1 SW26 5895 SW 8 38373 P 09/07-19 39 3 66 18 E 8 1 4078 SW 7 26253 P 09/07-20 39 3 62 23 NE 8 1 2262 NW 6 14133 P 09/07-21 39 3 59 30 N 9 14 2 1 S20 445 NW 6 2013 P 09/07-22 39 3 56 37 NW 9 1 454 NW 7 2769 P 09/07-23 39 3 54 44 NW 9 1 464 W 9 3524 P 09/08-00 55 3 53 49 W 9 15 2 1 S37 473 W 10 4280 P 09/08-01 55 3 52 52 W 10 1 414 W 10 3690 P 09/08-02 55 3 52 54 W 10 1 355 W 10 3099 P 09/08-03 55 3 51 54 W 12 18 2 1 W30 296 W 10 2509 P 09/08-04 55 3 51 54 W 12 1 281 W 10 2616 P 09/08-05 55 3 50 54 W 12 1 266 W 12 2723 P 09/08-06 59 10 51 54 W 12 17 2 2 W37 251 W 13 2831 P 09/08-07 59 10 52 54 W 10 2 1227 W 15 20527 P 09/08-08 59 10 56 49 W 9 2 2203 W 18 38224 P 09/08-09 59 10 60 45 W 7 9 2 2 W43 3179 W 21 55921 F 09/08-10 59 10 64 40 W 7 2 4661 W 20 77744 G 09/08-11 59 10 66 39 SW 6 2 6143 W 20 99567 G 09/08-12 61 20 68 37 SW 7 7 2 3 W43 7625 W 18 121392 V 09/08-13 61 20 70 37 SW 7 3 8232 W 16 113472 V 09/08-14 61 20 70 36 S 8 3 8840 SW 15 105553 V 09/08-15 61 20 71 36 S 8 13 2 3 SW23 9447 SW 13 97633 G 09/08-16 61 20 71 37 S 9 3 8782 SW 12 83383 G 09/08-17 61 20 70 39 S 10 3 8117 W 10 69133 G 09/08-18 61 20 70 39 S 12 18 2 3 W17 7453 W 9 54882 F 09/08-19 61 20 67 43 SW 10 3 5465 W 9 40341 F 09/08-20 61 20 64 47 SW 9 3 3478 W 9 25799 P 09/08-21 61 20 62 50 W 8 10 2 3 SW14 1490 W 9 11257 P 09/08-22 61 20 60 51 W 8 3 1123 W 8 8349 P 09/08-23 61 20 59 53 W 8 3 756 W 8 5442 P 09/09-00 38 5 56 56 W 9 14 2 1 SW21 389 W 8 2535 P 09/09-01 38 5 55 60 W 10 1 327 W 9 2436 P 09/09-02 38 5 53 63 W 12 1 266 W 12 2337 P 09/09-03 50 5 52 66 W 13 20 2 1 SW30 204 W 13 2239 P 09/09-04 50 5 52 68 W 13 1 205 W 13 2256 P 09/09-05 50 5 52 68 W 13 1 205 W 13 2272 P 09/09-06 50 5 52 68 W 13 20 2 1 SW37 205 W 13 2289 P 09/09-07 50 5 53 63 W 13 1 1275 W 14 18288 P 09/09-08 50 5 57 52 W 13 1 2345 SW 16 34286 P 09/09-09 29 5 62 43 W 14 23 2 1 SW46 3415 SW 17 50285 F 09/09-10 29 5 66 35 W 15 1 5064 SW 17 73310 G 09/09-11 29 5 68 31 W 16 1 6713 SW 17 96335 G 09/09-12 50 10 70 28 SW 16 25 2 2 SW51 8362 SW 17 119359 V 09/09-13 50 10 71 27 SW 15 2 8942 SW 17 132417 V 09/09-14 50 10 72 27 SW 14 2 9522 SW 18 145474 V 09/09-15 50 10 73 27 SW 13 21 2 2 S32 10103 SW 18 158531 E 09/09-16 50 10 73 28 SW 14 2 9127 SW 17 137156 V 09/09-17 50 10 71 29 W 15 2 8152 SW 16 115781 V 09/09-18 50 10 71 29 W 16 25 2 2 SW26 7177 SW 15 94406 G 09/09-19 50 10 67 32 W 16 2 09/09-20 50 10 64 34 W 15 2 09/09-21 50 10 61 34 W 14 22 2 09/09-22 50 10 60 34 W 13 2 09/09-23 50 10 58 35 W 10 2 09/10-00 54 10 55 38 W 9 15 2 09/10-01 54 10 53 41 W 8 2 09/10-02 54 10 51 44 W 6 2 09/10-03 54 10 50 46 W 6 6 2 09/10-04 54 10 50 46 W 7 2 09/10-05 54 10 49 45 W 9 2 09/10-06 54 10 49 45 W 10 16 1 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...JAY STALNACKER FMO REASON FOR REQUEST...WILDFIRE .TAG 20100907.WESTS.01/BOU