FNUS75 KBOU 041557 FWSBOU SPOT FORECAST FOR RFB 16 18 20...USFS NATIONAL WEATHER SERVICE DENVER CO 857 AM MST FRI MAR 4 2011 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...A WEATHER DISTURBANCE WILL BE MOVING OVER THE STATE TODAY WITH SNOW EXPECTED TO DEVELOP BY AFTERNOON. THE AIRMASS WILL BE SLIGHTLY UNSTABLE...ALLOWING THE SNOW SHOWERS TO DEVELOP AND ALSO ENHANCING SMOKE DISPERSION. CONVECTIVE SNOW SHOWERS WILL BE CAPABLE OF PRODUCING SNOWFALL RATES OF 1 TO 2 INCHES PER HOUR. HIGH PRESSURE AND DRIER AIR WILL BE MOVING INTO THE REGION OVERNIGHT AND SATURDAY. ...THUNDERSTORMS IMPLY STRONG...GUSTY AND ERRATIC WINDS... .REST OF TODAY... SKY/WEATHER.........MOSTLY CLOUDY. SNOW SHOWERS UNTIL 1400...THEN SNOW SHOWERS LIKELY UNTIL 1700...THEN ISOLATED SNOW SHOWERS. MAX TEMPERATURE.....34-38. MIN HUMIDITY........48-56%. 20-FOOT WINDS.......UPSLOPE/UPVALLEY 4-10 MPH UNTIL 0900...THEN NORTHWEST 6-12 MPH. TRANSPORT WINDS.....NORTHWEST 12-20 MPH. MIXING HEIGHT.......4500-5000 FT AGL UNTIL 1100...THEN RISING TO 7000-7500 FT AGL. SMOKE DISPERSAL.....POOR UNTIL 1100. VERY GOOD AFTER 1300. HAINES INDEX........3 VERY LOW. .TONIGHT... SKY/WEATHER.........MOSTLY CLOUDY UNTIL 2400...THEN PARTLY CLOUDY(30-40%). ISOLATED SNOW SHOWERS UNTIL 2300. MIN TEMPERATURE.....16-22. MAX HUMIDITY........66-74%. 20-FOOT WINDS.......WEST WINDS 11-17 MPH. TRANSPORT WINDS.....NORTHWEST 12-20 MPH. MIXING HEIGHT.......4800-5800 FT AGL UNTIL 2000. BELOW 1000 FT AGL AFTER 0100. SMOKE DISPERSAL.....GOOD UNTIL 2000. POOR AFTER 2200. HAINES INDEX........4 LOW. .SATURDAY... SKY/WEATHER.........PARTLY CLOUDY(50-60%) UNTIL 1700...THEN MOSTLY CLOUDY(50-60%). MAX TEMPERATURE.....40-46. MIN HUMIDITY........26-34%. 20-FOOT WINDS.......WEST WINDS 12-20 MPH. GUSTS UP TO 30 MPH IN THE LATE MORNING AND AFTERNOON. TRANSPORT WINDS.....NORTHWEST 16-24 MPH UNTIL 1200...THEN WEST 32-36 MPH. MIXING HEIGHT.......1000-1400 FT AGL UNTIL 0900...THEN 5600-6600 FT AGL UNTIL 1100...THEN 6800-7800 FT AGL UNTIL 1700...THEN 5000 FT AGL. SMOKE DISPERSAL.....POOR UNTIL 0900...THEN GOOD UNTIL 1200...THEN EXCELLENT. HAINES INDEX........3 VERY LOW. .FORECAST DAYS 3 THROUGH 5... .SUNDAY...MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS AND SNOW SHOWERS AFTER 0600 UNTIL 1800...THEN CHANCE OF SNOW SHOWERS. LOWS IN THE UPPER 20S. HIGHS IN THE UPPER 40S. WEST WINDS AROUND 18 MPH WITH GUSTS TO 35 MPH. .MONDAY...CHANCE OF SNOW SHOWERS UNTIL 1800. CHANCE OF RAIN SHOWERS AFTER 1200 UNTIL 1800...THEN SNOW LIKELY. LOWS IN THE UPPER 20S. HIGHS AROUND 40. SOUTH WINDS AROUND 8 MPH WITH GUSTS TO 20 MPH. .TUESDAY...SNOW LIKELY UNTIL 1800...THEN CHANCE OF SNOW. COLDER. LOWS AROUND 19. HIGHS IN THE UPPER 20S. NORTH WINDS AROUND 10 MPH WITH GUSTS TO 20 MPH. FIRE WEATHER TABLE FOR RFB 16 18 20. +++ 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 03/04-08 98 76 28 75 W 3 3 3 1 NW12 3899 W 12 38696 P 03/04-09 98 76 30 71 W 5 1 4802 W 14 59450 F 03/04-10 98 76 32 65 NW 6 1 5704 NW 15 80205 G 03/04-11 92 80 33 59 N 7 7 3 1 W15 6607 NW 17 100960 V 03/04-12 92 80 34 55 N 7 1 7288 NW 17 112436 V 03/04-13 92 80 35 52 N 7 1 7968 NW 18 123913 V 03/04-14 94 65 35 50 N 7 7 3 1 NW21 8649 NW 18 135389 V 03/04-15 94 65 35 51 N 6 1 8008 NW 18 130715 V 03/04-16 94 65 34 53 NW 6 1 7366 NW 20 126041 V 03/04-17 68 10 32 58 NW 6 6 3 1 NW25 6724 NW 21 121366 V 03/04-18 68 10 30 61 NW 8 1 5730 NW 21 103532 V 03/04-19 68 10 28 64 NW 12 1 4736 NW 21 85699 G 03/04-20 57 10 26 67 NW 14 22 2 1 NW32 3742 NW 21 67865 G 03/04-21 57 10 24 69 NW 15 1 2847 NW 20 50358 F 03/04-22 57 10 23 69 W 14 1 1952 NW 18 32852 P 03/04-23 39 7 22 68 W 14 22 4 1 N35 1057 NW 17 15346 P 03/05-00 39 7 21 69 W 14 1 961 NW 15 13091 P 03/05-01 39 7 20 69 W 13 1 865 W 14 10836 P 03/05-02 27 7 20 69 W 13 21 4 1 NW35 769 W 13 8581 P 03/05-03 27 7 19 66 W 13 1 750 W 14 8620 P 03/05-04 27 7 19 62 W 14 1 731 W 14 8660 P 03/05-05 50 6 20 59 W 14 22 3 1 NW38 712 NW 14 8700 P 03/05-06 50 6 20 58 W 13 1 931 NW 14 10819 P 03/05-07 50 6 22 54 W 12 1 1151 NW 13 12938 P 03/05-08 50 6 25 49 W 10 16 3 1 NW45 1370 NW 13 15056 P 03/05-09 50 6 31 38 W 10 1 5018 NW 23 110752 V 03/05-10 50 6 36 32 W 10 1 6924 NW 26 169055 E 03/05-11 50 6 40 28 W 12 18 3 1 NW44 8830 NW 30 227359 E 03/05-12 50 6 40 28 W 14 1 8606 W 31 232304 E 03/05-13 50 6 41 28 W 15 1 8382 W 32 237250 E 03/05-14 50 6 40 29 W 17 28 2 1 NW46 8158 W 35 242195 E 03/05-15 50 6 39 31 W 18 1 7098 W 36 216040 E 03/05-16 50 6 38 33 W 20 1 6038 W 37 189885 E 03/05-17 55 6 34 39 W 20 31 2 1 NW51 4978 W 38 163730 E 03/05-18 55 6 31 44 W 20 1 3850 W 36 122989 V 03/05-19 55 6 30 48 W 21 1 2723 W 32 82248 G 03/05-20 55 6 29 49 W 21 33 3 1 NW36 1595 W 30 41507 F 03/05-21 55 6 28 51 W 21 1 1408 W 30 36280 P 03/05-22 55 6 28 52 W 21 1 1220 W 29 31053 P 03/05-23 55 5 29 51 W 21 33 3 1 NW22 1033 W 29 25827 P 03/06-00 55 5 28 53 W 21 1 875 W 28 21217 P 03/06-01 55 5 28 55 W 22 1 716 W 26 16607 P 03/06-02 55 5 28 58 W 22 35 3 1 W28 558 W 25 11997 P 03/06-03 55 5 27 62 W 21 1 496 W 24 10585 P 03/06-04 55 5 27 64 W 21 1 435 W 24 9173 P 03/06-05 60 10 26 67 W 20 31 3 1 NW32 374 W 24 7761 P 03/06-06 64 10 27 65 W 20 1 978 W 24 21771 P 03/06-07 67 10 28 65 W 20 1 1583 W 25 35781 P 03/06-08 71 10 35 51 W 20 31 3 1 W21 2187 W 26 49791 F 03/06-09 75 10 38 46 W 18 1 3533 W 24 67674 G 03/06-10 78 10 42 40 W 17 1 4878 W 22 85558 G 03/06-11 82 10 45 35 W 16 25 3 1 W20 6223 W 20 103441 V 03/06-12 83 10 46 34 W 15 1 6683 W 18 108512 V 03/06-13 83 10 46 34 W 15 1 7143 W 18 113583 V 03/06-14 84 10 45 34 W 15 24 2 1 W17 7603 W 18 118654 V 03/06-15 85 10 44 36 W 16 1 6865 W 18 111383 V 03/06-16 85 10 43 38 W 17 1 6126 W 20 104112 V 03/06-17 86 30 38 46 W 18 30 2 1 W29 5388 W 21 96841 G 03/06-18 86 30 35 55 W 17 1 4736 W 23 90698 G 03/06-19 86 30 33 63 W 14 1 4084 W 24 84554 G 03/06-20 86 30 32 68 W 13 21 2 1 W40 3432 W 26 78411 G 03/06-21 86 30 31 74 W 14 1 3238 W 28 75926 G 03/06-22 86 30 31 78 W 15 1 3043 W 28 73441 G 03/06-23 86 30 32 77 W 16 25 3 1 W37 2849 W 29 70956 G 03/07-00 83 30 32 81 W 16 1 2547 W 28 62209 G 03/07-01 81 30 31 81 W 15 1 2245 W 28 53463 F 03/07-02 78 30 31 83 W 13 21 2 1 W36 1943 W 26 44716 F 03/07-03 75 30 30 86 W 10 1 1928 W 24 40712 F 03/07-04 73 30 30 84 W 9 1 1912 W 22 36708 P 03/07-05 70 30 29 84 W 7 7 2 1 W30 1896 W 20 32703 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 $$ DANKERS...WFO BOULDER REQUESTED BY...ED LEBLANC REASON FOR REQUEST...PRESCRIBED .TAG 20110304.RFB16.01/BOU