FNUS75 KBOU 281428 FWSBOU SPOT FORECAST FOR GRAND LAKE PILES...NPS NATIONAL WEATHER SERVICE DENVER CO 728 AM MST MON FEB 28 2011 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...THE VALLEY IS SITTING IN A FAIRLY STRONG INVERSION THIS MORNING...BUT TEMPERATURES ARE EXPECTED TO WARM ENOUGH LATER THIS MORNING AND AFTERNOON TO HELP BREAK THE INVERSION. IF WEST WINDS BEGIN TO INCREASE...THEN THAT WILL BE A SIGN THAT THE INVERSION IS BREAKING SUFFICIENTLY. STRONG WESTERLY FLOW ALOFT SHOULD HELP DISPERSE ANY SMOKE ONCE THE INVERSION BREAKS. SIMILAR CONDITIONS CAN BE EXPECTED TUESDAY...BEFORE THE NEXT WEATHER DISTURBANCE MOVES INTO THE REGION. ...THUNDERSTORMS IMPLY STRONG...GUSTY AND ERRATIC WINDS... .TODAY... SKY/WEATHER.........MOSTLY SUNNY. MAX TEMPERATURE.....42. MIN HUMIDITY........23%. 20-FOOT WINDS.......VARIABLE 1-4 MPH UNTIL 1000...THEN WEST 6-12 MPH. TRANSPORT WINDS.....WEST 21-32 MPH UNTIL 1200...THEN 44-56 MPH. MIXING HEIGHT.......BELOW 1000 FT AGL UNTIL 0900...THEN 4400-5400 FT AGL. SMOKE DISPERSAL.....POOR UNTIL 1000...THEN FAIR UNTIL 1100...THEN GOOD UNTIL 1200...THEN EXCELLENT AFTER 1400. HAINES INDEX........4 LOW. .TONIGHT... SKY/WEATHER.........MOSTLY CLEAR. MIN TEMPERATURE.....10. MAX HUMIDITY........89%. 20-FOOT WINDS.......WEST WINDS 4-10 MPH. TRANSPORT WINDS.....WEST 33-44 MPH UNTIL 2400...THEN 17-28 MPH. MIXING HEIGHT.......3200-4200 FT AGL UNTIL 2000. BELOW 1000 FT AGL AFTER 0100. SMOKE DISPERSAL.....POOR. HAINES INDEX........4 LOW. .TUESDAY... SKY/WEATHER.........MOSTLY SUNNY. MAX TEMPERATURE.....47. MIN HUMIDITY........28%. 20-FOOT WINDS.......SOUTHWEST WINDS 7-13 MPH. TRANSPORT WINDS.....WEST 13-24 MPH UNTIL 1200...THEN 24-32 MPH. MIXING HEIGHT.......BELOW 1000 FT AGL UNTIL 0900...THEN 5200-6200 FT AGL. SMOKE DISPERSAL.....POOR UNTIL 1000...THEN GOOD UNTIL 1200...THEN VERY GOOD UNTIL 1300...THEN EXCELLENT UNTIL 1600...THEN VERY GOOD. HAINES INDEX........4 LOW. .FORECAST DAYS 3 THROUGH 5... .WEDNESDAY...PARTLY CLOUDY. SLIGHT CHANCE OF SNOW AFTER 1800. LOWS AROUND 14. HIGHS IN THE LOWER 50S. SOUTHWEST WINDS AROUND 8 MPH WITH GUSTS TO 20 MPH. .THURSDAY...MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW UNTIL 0600... THEN CHANCE OF RAIN UNTIL 1800. CHANCE OF SNOW AFTER 0600. LOWS IN THE LOWER 20S. HIGHS IN THE UPPER 40S. WEST WINDS AROUND 10 MPH WITH GUSTS TO 20 MPH. .FRIDAY...MOSTLY CLOUDY. CHANCE OF SNOW UNTIL 1800...THEN SLIGHT CHANCE OF SNOW. COLDER. LOWS AROUND 12. HIGHS IN THE UPPER 30S. WEST WINDS AROUND 9 MPH. FIRE WEATHER TABLE FOR GRAND LAKE PILES. +++ 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 02/28-07 24 0 8 90 W 2 1 550 W 12 5865 P 02/28-08 24 0 7 93 W 2 2 3 1 W68 451 W 10 4047 P 02/28-09 24 0 12 78 W 3 1 1541 W 20 44632 F 02/28-10 24 0 24 47 W 3 1 2630 W 30 85217 G 02/28-11 24 0 30 37 W 5 5 4 1 W77 3720 W 39 125802 V 02/28-12 24 0 37 28 W 6 1 4366 W 45 175845 E 02/28-13 24 0 41 25 W 7 1 5012 W 51 225889 E 02/28-14 24 0 42 23 W 8 8 4 1 W78 5658 W 56 275933 E 02/28-15 24 0 42 23 W 9 1 5532 W 56 268661 E 02/28-16 24 0 40 25 W 10 1 5407 W 55 261390 E 02/28-17 21 0 39 26 W 10 16 4 1 W76 5282 W 55 254118 E 02/28-18 21 0 34 30 W 10 1 4270 W 49 192851 E 02/28-19 21 0 32 34 W 10 1 3258 W 43 131584 V 02/28-20 21 0 27 40 W 10 16 4 1 W71 2246 W 36 70316 G 02/28-21 21 0 26 41 W 10 1 2026 W 35 60644 G 02/28-22 21 0 28 37 W 10 1 1805 W 32 50973 F 02/28-23 18 0 24 43 W 10 16 4 1 W67 1584 W 30 41301 F 03/01-00 18 0 23 45 W 10 1 1220 W 26 30115 P 03/01-01 18 0 16 57 W 12 1 856 W 22 18930 P 03/01-02 18 0 13 63 W 12 17 4 1 W66 492 W 18 7745 P 03/01-03 18 0 12 62 W 12 1 493 W 17 7502 P 03/01-04 18 0 12 58 W 12 1 493 W 17 7260 P 03/01-05 18 0 14 52 W 10 16 4 1 W68 494 W 16 7017 P 03/01-06 18 0 11 65 W 9 1 406 W 14 5297 P 03/01-07 18 0 11 75 W 8 1 319 W 12 3578 P 03/01-08 18 0 10 89 W 6 6 4 1 W61 231 W 9 1858 P 03/01-09 18 0 15 80 SW 6 1 1534 W 15 34523 P 03/01-10 18 0 27 52 SW 6 1 2836 W 22 67188 G 03/01-11 18 0 33 44 SW 7 7 3 1 W52 4139 W 28 99852 G 03/01-12 18 0 41 34 SW 8 1 4927 W 29 124946 V 03/01-13 18 0 44 31 SW 9 1 5716 W 30 150039 E 03/01-14 18 0 46 29 SW 9 9 3 1 W49 6504 W 31 175132 E 03/01-15 18 0 47 29 SW 8 1 6162 W 29 156612 E 03/01-16 18 0 43 33 SW 7 1 5820 W 28 138092 V 03/01-17 20 0 42 35 SW 6 6 3 1 W43 5479 W 25 119572 V 03/01-18 20 0 36 41 SW 6 1 4738 W 21 90662 G 03/01-19 20 0 34 44 W 5 1 3997 W 16 61751 G 03/01-20 20 0 28 53 W 5 5 2 1 W33 3255 W 12 32841 P 03/01-21 20 0 27 51 SW 3 1 2620 SW 10 24796 P 03/01-22 20 0 30 42 SE 2 1 1984 SW 9 16751 P 03/01-23 20 0 25 48 CALM 1 2 1 W29 1348 SW 7 8706 P 03/02-00 20 0 23 50 SE 2 1 958 SW 7 6118 P 03/02-01 20 0 17 63 SW 5 1 567 W 7 3530 P 03/02-02 20 0 12 79 W 6 6 3 1 W35 177 W 6 941 P 03/02-03 20 0 10 82 W 6 1 177 W 6 868 P 03/02-04 20 0 11 78 SW 5 1 176 SW 6 795 P 03/02-05 30 0 13 70 SW 3 3 3 1 W33 176 SW 5 721 P 03/02-06 30 0 9 85 SW 3 1 167 SW 5 656 P 03/02-07 30 0 9 93 S 2 1 159 S 5 591 P 03/02-08 30 0 9 100 S 3 3 4 1 W29 151 S 3 526 P 03/02-09 30 0 14 91 S 5 1 1218 SW 10 22130 P 03/02-10 30 0 28 54 SW 7 1 2284 SW 16 43734 F 03/02-11 30 0 35 42 SW 9 9 4 1 W28 3351 SW 22 65338 G 03/02-12 30 0 44 30 SW 10 1 4616 SW 24 100364 V 03/02-13 30 0 48 25 SW 10 1 5881 W 25 135390 V 03/02-14 30 0 51 22 SW 10 10 2 1 W39 7146 W 28 170416 E 03/02-15 30 0 51 22 SW 10 1 6848 W 30 176066 E 03/02-16 30 0 48 26 SW 10 1 6550 W 32 181716 E 03/02-17 61 20 47 28 SW 10 10 2 1 W48 6251 W 35 187366 E 03/02-18 61 20 43 33 SW 10 1 5826 W 36 179028 E 03/02-19 61 20 41 37 SW 12 1 5401 W 37 170690 E 03/02-20 61 20 37 45 W 12 12 2 1 W47 4976 W 38 162353 E 03/02-21 61 20 37 47 SW 13 1 4610 W 37 149631 V 03/02-22 61 20 38 44 SW 13 1 4243 W 37 136909 V 03/02-23 61 20 35 51 SW 14 22 2 1 W52 3877 W 37 124187 V 03/03-00 61 20 34 53 SW 14 1 3359 W 33 100819 V 03/03-01 61 20 30 61 SW 14 1 2840 W 30 77451 G 03/03-02 61 20 26 69 SW 14 22 2 1 W53 2322 W 26 54083 F 03/03-03 61 20 24 70 W 14 1 2561 W 26 58791 F 03/03-04 61 20 25 68 W 13 1 2800 W 26 63499 G 03/03-05 72 25 26 63 W 13 13 2 1 W58 3039 W 25 68208 G 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...JEFF SINGER REASON FOR REQUEST...PRESCRIBED .TAG 20110228.GRAND.01/BOU