FNUS75 KBOU 281536 FWSBOU SPOT FORECAST FOR GRIZZLY RX...USFS NATIONAL WEATHER SERVICE DENVER CO 935 AM MDT THU OCT 28 2010 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...HIGH PRESSURE WILL BE OVER THE AREA THROUGH TONIGHT WITH LIGHT WINDS ALOFT. INVERSION LAYER 1000-3000 FT ABOVE GROUND LEVEL WILL SLOW THE WARMING WHICH WILL LIMIT THE SMOKE DISPERSAL TODAY. ON FRIDAY...THE HIGH WILL SHIFT EAST DURING THE DAY WITH INCREASING SOUTHWEST FLOW ALOFT. TEMPERATURES ARE EXPECTED TO BE SLIGHTLY WARMER...THOUGH THERE WILL STILL BE A WEAK INVERSION AROUND 1000 FEET AGL. THOUGH MIXING HEIGHTS WILL BE LOW...THERE APPEARS TO BE ENOUGH TRANSPORT WIND TO PROVIDE FAIR DISPERSION DURING THE AFTERNOON. A WEATHER DISTURBANCE IS EXPECTED TO MOVE ACROSS THE AREA DURING THE WEEKEND WITH A CHANCE FOR SOME SNOW. WINDS ARE EXPECTED TO INCREASE AS THE DISTURBANCE MOVES THROUGH THE AREA. ...THUNDERSTORMS IMPLY STRONG...GUSTY AND ERRATIC WINDS... .TODAY... SKY/WEATHER.........MOSTLY SUNNY. MAX TEMPERATURE.....35-40. MIN HUMIDITY........30-35%. 20-FOOT WINDS.......SOUTH 2-5 MPH BECOMING SOUTHWEST 4-9 MPH AFTER 1300. TRANSPORT WINDS.....SOUTHWEST 10 MPH. MIXING HEIGHT.......500 FT AGL UNTIL 1200...THEN INCREASING TO 1400 FT AGL BY 1400. SMOKE DISPERSAL.....POOR. HAINES INDEX........4 LOW. .TONIGHT... SKY/WEATHER.........CLEAR. MIN TEMPERATURE.....15-20. MAX HUMIDITY........80-85%. 20-FOOT WINDS.......SOUTHWEST 7-13 MPH. TRANSPORT WINDS.....SOUTHWEST 12 MPH. MIXING HEIGHT.......BELOW 1000 FT AGL. SMOKE DISPERSAL.....POOR. HAINES INDEX........4 LOW. .FRIDAY... SKY/WEATHER.........MOSTLY SUNNY UNTIL 1500...THEN PARTLY CLOUDY(30-40%). MAX TEMPERATURE.....44-49. MIN HUMIDITY........32-36%. 20-FOOT WINDS.......SOUTHWEST 2-5 MPH UNTIL 0900...THEN UPSLOPE/UPVALLEY 4-10 MPH UNTIL 1200...THEN SOUTHWEST 7-13 MPH. TRANSPORT WINDS.....SOUTHWEST 4-8 MPH UNTIL 1200...THEN 13-24 MPH. MIXING HEIGHT.......BELOW 1000 FT AGL UNTIL 1300...THEN 2000-3000 FT AGL. SMOKE DISPERSAL.....POOR UNTIL 1300...THEN FAIR. HAINES INDEX........3 VERY LOW. .FORECAST DAYS 3 THROUGH 5... .SATURDAY...PARTLY CLOUDY. CHANCE OF RAIN SHOWERS AFTER 1200...THEN CHANCE OF SNOW AFTER 1800. LOWS IN THE LOWER 30S. HIGHS AROUND 50. SOUTHWEST WINDS AROUND 11 MPH WITH GUSTS TO 25 MPH. .SUNDAY...PARTLY CLOUDY. CHANCE OF SNOW UNTIL 0600...THEN SLIGHT CHANCE OF SNOW SHOWERS. COLDER. LOWS IN THE UPPER 20S. HIGHS IN THE UPPER 30S. SOUTHWEST WINDS AROUND 9 MPH WITH GUSTS TO 20 MPH. .MONDAY...PARTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS. LOWS IN THE UPPER 20S. HIGHS IN THE UPPER 30S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. FIRE WEATHER TABLE FOR GRIZZLY RX. +++ 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 10/28-09 11 0 23 40 S 5 5 4 1 W53 215 S 7 1208 P 10/28-10 11 0 30 32 S 5 1 496 S 7 2980 P 10/28-11 11 0 34 29 S 5 1 776 S 7 4752 P 10/28-12 11 0 37 28 S 5 5 4 1 W48 1057 S 7 6524 P 10/28-13 11 0 39 28 S 5 1 1158 SW 8 7999 P 10/28-14 11 0 40 30 SW 5 1 1258 SW 8 9475 P 10/28-15 11 0 41 32 SW 5 5 4 1 W48 1359 SW 9 10950 P 10/28-16 11 0 40 37 SW 5 1 1115 SW 9 9085 P 10/28-17 11 0 39 44 SW 6 1 871 SW 9 7220 P 10/28-18 10 0 38 49 S 6 6 4 1 W46 813 SW 10 7209 P 10/28-19 10 0 34 53 S 6 1 601 SW 9 5144 P 10/28-20 10 0 30 58 S 6 1 389 S 8 3078 P 10/28-21 10 0 29 57 S 6 6 4 1 W44 177 S 7 1012 P 10/28-22 11 0 27 61 S 7 1 161 S 8 1030 P 10/28-23 12 0 26 63 S 9 1 144 S 9 1047 P 10/29-00 13 0 25 63 S 10 16 4 1 W44 127 S 9 1065 P 10/29-01 10 0 26 60 S 10 1 126 S 9 1029 P 10/29-02 8 0 25 59 S 9 1 125 SW 9 993 P 10/29-03 5 0 25 59 SW 8 8 4 1 W49 124 SW 9 957 P 10/29-04 7 0 24 62 SW 7 1 122 SW 8 853 P 10/29-05 9 0 24 66 SW 6 1 120 SW 7 750 P 10/29-06 11 0 24 70 SW 5 5 3 1 W48 118 SW 6 646 P 10/29-07 11 0 22 77 SW 3 1 125 SW 6 668 P 10/29-08 10 0 22 81 SW 3 1 131 SW 6 690 P 10/29-09 10 0 23 80 SW 3 3 3 1 W41 138 SW 6 712 P 10/29-10 13 0 31 63 SW 3 1 209 SW 7 1302 P 10/29-11 15 0 34 66 S 3 1 280 SW 7 1892 P 10/29-12 18 0 36 65 S 5 5 3 1 W39 351 SW 8 2482 P 10/29-13 24 0 45 49 SW 6 1 1305 SW 15 26926 P 10/29-14 29 0 48 45 SW 6 1 2260 W 21 51370 F 10/29-15 35 0 49 44 SW 7 7 3 1 W38 3214 W 28 75814 G 10/29-16 33 0 49 45 SW 8 1 2984 W 26 68626 G 10/29-17 30 0 48 46 W 8 1 2755 W 25 61439 G 10/29-18 28 0 46 50 W 8 8 3 1 W31 2525 W 24 54251 F 10/29-19 28 0 42 57 W 8 1 1822 W 20 37451 P 10/29-20 27 0 38 63 SW 8 1 1119 SW 15 20651 P 10/29-21 27 0 37 63 SW 7 7 3 1 W28 416 SW 10 3851 P 10/29-22 23 0 35 65 SW 6 1 352 SW 9 3011 P 10/29-23 18 0 35 64 SW 6 1 289 SW 8 2172 P 10/30-00 14 0 34 63 S 5 5 3 1 W43 225 SW 7 1332 P 10/30-01 14 0 35 60 S 5 1 224 SW 7 1347 P 10/30-02 15 0 34 60 SW 5 1 224 SW 7 1362 P 10/30-03 15 0 34 61 SW 5 5 2 1 W46 223 SW 7 1377 P 10/30-04 23 0 33 64 SW 6 1 209 SW 8 1368 P 10/30-05 30 0 33 66 SW 6 1 195 SW 8 1360 P 10/30-06 38 14 33 69 SW 7 7 2 1 W38 182 SW 8 1351 P 10/30-07 42 14 32 75 SW 8 1 173 SW 9 1370 P 10/30-08 47 14 31 78 S 8 1 165 S 9 1390 P 10/30-09 51 14 32 75 S 9 14 2 1 W39 156 S 10 1409 P 10/30-10 55 14 38 60 S 10 1 221 S 12 2174 P 10/30-11 59 14 39 56 S 10 1 285 S 12 2939 P 10/30-12 63 54 41 51 S 12 17 3 1 SW46 349 S 13 3704 P 10/30-13 67 54 46 42 S 13 1 1038 S 15 16176 P 10/30-14 72 54 48 40 S 14 1 1728 SW 17 28649 P 10/30-15 76 54 49 40 SW 15 23 2 1 SW59 2417 SW 20 41121 F 10/30-16 76 54 48 42 SW 16 1 1861 SW 18 31222 P 10/30-17 77 54 48 44 SW 16 1 1306 SW 18 21323 P 10/30-18 77 45 45 51 SW 16 24 2 1 SW69 750 SW 17 11424 P 10/30-19 77 45 40 62 SW 16 1 10/30-20 77 45 36 72 SW 16 1 10/30-21 77 45 35 76 SW 15 23 1 10/30-22 77 45 32 83 SW 14 1 10/30-23 77 45 31 86 SW 14 1 10/31-00 77 45 31 87 SW 13 20 1 10/31-01 77 45 31 85 SW 13 1 10/31-02 77 45 31 86 SW 12 1 10/31-03 77 45 30 88 SW 12 17 1 10/31-04 77 45 30 90 SW 12 1 10/31-05 77 45 30 90 SW 12 1 10/31-06 59 14 29 91 SW 12 17 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...LESZCYNSKI...WFO BOULDER REQUESTED BY...CASEY CHEESBROUGH REASON FOR REQUEST...PRESCRIBED .TAG 20101028.GRIZZ.01/BOU