FNUS75 KBOU 181308 FWSBOU SPOT FORECAST FOR CEMEX- DOWE FLATS...BOULDER COUNTY SHERIFF NATIONAL WEATHER SERVICE DENVER CO 708 AM MDT THU MAR 18 2010 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...ONE MORE DRY AND WARM DAY CAN BE EXPECTED...ALLOWING GOOD SMOKE DISPERSION THIS AFTERNOON. BY MID TO LATE AFTERNOON...AN INITIAL WEAK AND DRY COLD FRONT WILL MOVE ACROSS THE BURN SITE... TURNING WINDS AROUND TO THE NORTHEAST AT INCREASING SPEEDS. A STRONGER AND COLDER FRONT WILL MOVE THROUGH THE AREA THIS EVENING WITH SNOW DEVELOPING BY MIDNIGHT AND CONTINUING THROUGH FRIDAY. SEVERAL INCHES OF ACCUMULATION CAN BE EXPECTED...AND TEMPERATURES WILL BE MUCH COLDER. ...THUNDERSTORMS IMPLY STRONG...GUSTY AND ERRATIC WINDS... .TODAY... SKY/WEATHER.........PARTLY CLOUDY(40-50%). MAX TEMPERATURE.....60. MIN HUMIDITY........23%. WIND (20 FT)........NORTHWEST 4-8 MPH UNTIL 1300...THEN BECOMING NORTHEAST 6-12 MPH WITH GUSTS UP TO 22 MPH. TRANSPORT WINDS.....WEST 4-12 MPH. MIXING HEIGHT.......1000-2000 FT AGL UNTIL 1100...THEN 5600-6600 FT AGL. SMOKE DISPERSAL.....POOR UNTIL 1200...THEN FAIR UNTIL 1300...THEN GOOD UNTIL 1700...THEN POOR. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .TONIGHT... SKY/WEATHER.........CLOUDY. CHANCE OF RAIN SHOWERS AND SNOW SHOWERS UNTIL 2400...THEN SNOW. MIN TEMPERATURE.....29. MAX HUMIDITY........88%. WIND (20 FT)........NORTH 13-19 MPH. TRANSPORT WINDS.....NORTHEAST 5-16 MPH. MIXING HEIGHT.......4600-5600 FT AGL UNTIL 2100...THEN 3000-4000 FT AGL. SMOKE DISPERSAL.....POOR UNTIL 0200. FAIR AFTER 0300. HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .FRIDAY... SKY/WEATHER.........SNOW AND AREAS OF BLOWING SNOW. MAX TEMPERATURE.....30. MIN HUMIDITY........82%. WIND (20 FT)........EAST 8-9 MPH. TRANSPORT WINDS.....EAST 5-16 MPH. MIXING HEIGHT.......2600-3600 FT AGL. SMOKE DISPERSAL.....POOR. HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .FORECAST DAYS 3 THROUGH 5... .SATURDAY...SNOW LIKELY UNTIL 0600...THEN SLIGHT CHANCE OF SNOW UNTIL 1200. LOWS AROUND 12. HIGHS IN THE MID 30S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. .SUNDAY...MOSTLY CLEAR. NOT AS COOL. LOWS IN THE LOWER 20S. HIGHS IN THE UPPER 40S. WEST WINDS AROUND 12 MPH. .MONDAY...PARTLY CLOUDY. WARMER. LOWS IN THE LOWER 30S. HIGHS AROUND 60. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. EXPERIMENTAL FIRE WEATHER TABLE FOR CEMEX- DOWE FLATS. +++ 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 03/18-06 35 0 41 39 W 4 6 5 1 SW10 383 W 8 2573 P 03/18-07 35 0 43 37 W 4 1 714 W 7 3537 P 03/18-08 37 0 45 35 W 4 1 1045 NW 6 4501 P 03/18-09 37 0 48 33 W 4 8 5 1 W15 1376 NW 5 5465 P 03/18-10 37 0 51 30 W 4 1 2595 W 7 19447 P 03/18-11 37 0 54 27 W 4 1 3815 W 9 33430 P 03/18-12 38 0 57 25 NW 6 8 4 1 W22 5034 W 10 47412 F 03/18-13 38 0 59 24 NW 8 1 5756 W 12 60040 G 03/18-14 42 0 60 23 N 7 1 6479 W 13 72668 G 03/18-15 50 0 59 23 NE 8 12 3 1 W24 7201 W 14 85296 G 03/18-16 55 0 58 24 NE 10 1 6505 W 10 61083 G 03/18-17 55 0 56 26 NE 12 1 5809 W 7 36869 P 03/18-18 63 18 53 30 NE 12 20 3 1 W29 5113 W 2 12655 P 03/18-19 63 18 49 35 NE 12 1 5685 NW 7 30771 P 03/18-20 63 18 45 43 NE 12 1 4523 N 9 30602 P 03/18-21 87 30 41 54 NE 12 20 2 1 W25 3360 NE 10 30433 P 03/18-22 87 30 40 60 NE 10 1 3061 NE 10 26565 P 03/18-23 87 30 38 66 NE 9 1 2761 NE 9 22697 P 03/19-00 100 82 37 72 NE 9 16 2 1 W32 2462 NE 9 18830 P 03/19-01 100 82 35 76 NE 12 1 2932 NE 12 30334 P 03/19-02 100 82 34 79 N 14 1 3401 NE 14 41838 F 03/19-03 100 93 32 82 N 16 23 2 1 W39 3871 N 16 53342 F 03/19-04 100 93 31 85 N 16 1 3946 NE 15 52060 F 03/19-05 100 93 29 88 N 15 1 4022 NE 15 50777 F 03/19-06 100 90 29 86 N 7 7 2 1 NW24 3034 N 15 39216 P 03/19-07 100 90 30 82 N 7 1 3345 N 13 34921 P 03/19-08 100 90 30 85 NE 6 1 3656 N 10 30626 P 03/19-09 100 90 30 85 NE 6 6 2 1 NW31 3967 N 8 26332 P 03/19-10 100 90 30 85 NE 6 1 3950 NE 7 22374 P 03/19-11 100 90 30 85 E 5 1 3933 E 6 18417 P 03/19-12 100 90 29 86 E 5 5 2 1 W30 3916 E 5 14459 P 03/19-13 100 90 29 87 E 5 1 3585 E 5 13543 P 03/19-14 100 90 28 88 E 6 1 3254 E 5 12628 P 03/19-15 100 90 27 90 E 6 6 2 1 W21 2923 E 5 11712 P 03/19-16 100 90 26 92 E 6 1 2560 E 6 11201 P 03/19-17 100 90 25 93 NE 6 1 2198 NE 6 10689 P 03/19-18 98 70 24 94 NE 6 6 2 1 W20 1835 NE 7 10178 P 03/19-19 98 70 23 96 E 5 1 1358 NE 5 7059 P 03/19-20 98 70 22 97 SE 3 1 881 E 3 3940 P 03/19-21 98 70 19 100 SE 2 2 3 1 NW28 404 SE 2 821 P 03/19-22 98 70 18 100 CALM 1 349 E 2 666 P 03/19-23 98 70 16 100 CALM 1 294 NE 2 512 P 03/20-00 88 70 15 100 N 2 2 3 1 NW22 240 CALM 357 P 03/20-01 88 70 14 100 N 6 1 268 N 6 1524 P 03/20-02 88 70 14 97 N 9 1 295 N 9 2692 P 03/20-03 88 70 13 90 N 12 12 2 1 W18 323 N 14 3859 P 03/20-04 88 70 13 83 N 10 1 286 N 10 2891 P 03/20-05 88 70 13 77 N 7 1 248 N 8 1924 P 03/20-06 63 17 13 74 N 5 5 2 1 NW21 210 N 6 956 P 03/20-07 63 17 14 76 NW 3 1 759 NW 5 2659 P 03/20-08 63 17 16 74 SW 3 1 1308 W 5 4363 P 03/20-09 63 17 19 70 S 3 3 2 1 NW24 1857 SW 3 6066 P 03/20-10 63 3 23 67 S 5 1 2786 SW 6 16513 P 03/20-11 63 3 26 64 S 5 1 3715 W 7 26960 P 03/20-12 38 3 28 61 S 6 6 2 1 NW31 4645 W 9 37407 P 03/20-13 38 3 30 58 S 6 1 4672 W 10 40765 F 03/20-14 38 3 32 54 S 6 1 4700 W 10 44124 F 03/20-15 38 3 33 52 S 6 6 2 1 NW37 4728 W 12 47483 F 03/20-16 38 3 33 52 S 5 1 3981 W 10 38558 P 03/20-17 38 3 32 53 S 3 1 3235 W 10 29633 P 03/20-18 23 0 31 54 S 3 3 2 1 N43 2488 W 9 20708 P 03/20-19 23 0 30 57 SW 6 1 1850 W 10 15576 P 03/20-20 23 0 28 62 W 9 1 1213 W 10 10445 P 03/20-21 23 0 26 68 W 12 12 3 1 N46 575 W 10 5313 P 03/20-22 23 0 25 72 W 13 1 441 W 12 4141 P 03/20-23 23 0 24 76 W 13 1 307 W 12 2970 P 03/21-00 23 0 24 79 W 13 17 4 1 N41 174 W 12 1798 P 03/21-01 23 0 23 81 W 13 1 166 W 12 1738 P 03/21-02 23 0 22 82 W 14 1 158 W 13 1679 P 03/21-03 23 0 22 83 W 14 20 4 1 NW39 150 W 13 1619 P 03/21-04 23 0 22 84 W 14 1 142 W 13 1593 P 03/21-05 23 0 22 84 W 15 1 133 W 14 1567 P 03/21-06 35 0 22 84 W 15 21 4 1 NW36 125 W 14 1541 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...BOULDER COUNTY SHERIFF S OFFICE REASON FOR REQUEST...PRESCRIBED .TAG 20100318.CEMEX.01/BOU