FNUS75 KBOU 030517 FWSBOU SPOT FORECAST FOR GLACIER BASIN PILE BURN...NPS NATIONAL WEATHER SERVICE DENVER CO 1105 PM MDT THU APR 2 2009 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...A STRONG STORM SYSTEM WILL MOVE ACROSS THE AREA FRIDAY NIGHT AND SATURDAY. THE ATMOSPHERE WILL BE FAIRLY UNSTABLE FRIDAY AFTERNOON WITH SHOWERS DEVELOPING. A COLD FRONT WILL MOVE THROUGH FRIDAY EVENING SHIFTING THE WINDS TO THE NORTHEAST AND ENHANCING THE SNOWFALL...WHICH MAY BE HEAVY AT TIMES. THE WINDS WILL INCREASE AND SHIFT THROUGH NORTH TOWARD NORTHWEST BY SATURDAY AFTERNOON...BRINGING A DECREASE IN THE SNOW. THE LOWER ATMOSPHERE SHOULD REMAIN FAIRLY WELL MIXED ON SATURDAY IN THE SNOW. ...THUNDERSTORMS IMPLY STRONG...GUSTY AND ERRATIC WINDS... .FRIDAY... SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS UNTIL 1200...THEN SCATTERED SNOW SHOWERS. MAX TEMPERATURE.....37. MIN HUMIDITY........55%. 20-FOOT WINDS.......WEST 13-19 MPH. GUSTS UP TO 25 MPH IN THE LATE MORNING AND EARLY AFTERNOON. TRANSPORT WINDS.....WEST 15 MPH UNTIL 1000...THEN SOUTHWEST 25 MPH. MIXING HEIGHT.......RISING TO 2000 FT AGL BY 1000 AND 4000 FT AGL BY 1300. SMOKE DISPERSAL.....POOR UNTIL 1000...THEN GOOD UNTIL 1300...THEN VERY GOOD. HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .FRIDAY NIGHT... SKY/WEATHER.........CLOUDY. RAIN SHOWERS AND SNOW SHOWERS LIKELY UNTIL 2100...THEN SNOW. MIN TEMPERATURE.....21. MAX HUMIDITY........100%. 20-FOOT WINDS.......WEST 8-14 MPH UNTIL 2200...THEN NORTHEAST 10-20 MPH. TRANSPORT WINDS.....SOUTHWEST 15 MPH UNTIL 2400...THEN NORTHEAST 15 MPH. MIXING HEIGHT.......3000 FT AGL LOWERING TO 2000 FT AGL. SMOKE DISPERSAL.....FAIR UNTIL 2200...THEN POOR. HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .SATURDAY... SKY/WEATHER.........CLOUDY. SNOW. MAX TEMPERATURE.....27. MIN HUMIDITY........75%. 20-FOOT WINDS.......NORTH 12-20 MPH. GUSTS TO 30 MPH. TRANSPORT WINDS.....NORTH 20 MPH BECOMING NORTHWEST 30 MPH. MIXING HEIGHT.......3000 FT AGL RISING TO 4000 FT AGL. SMOKE DISPERSAL.....FAIR UNTIL 1200...THEN VERY GOOD. HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .FORECAST DAYS 3 THROUGH 5... .SUNDAY...PARTLY CLOUDY. CHANCE OF SNOW UNTIL 0600...THEN SLIGHT CHANCE OF SNOW SHOWERS. LOWS AROUND 11. HIGHS IN THE LOWER 30S. WEST WINDS 10-20 MPH. .MONDAY...PARTLY CLOUDY. LOWS AROUND 16. HIGHS AROUND 40. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. .TUESDAY...PARTLY CLOUDY. LOWS IN THE LOWER 20S. HIGHS IN THE LOWER 40S. SOUTHWEST WINDS AROUND 8 MPH. .WEDNESDAY...MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SNOW SHOWERS AFTER 0600 UNTIL 1800...THEN CHANCE OF SNOW. LOWS IN THE MID 20S. HIGHS IN THE MID 30S. WEST WINDS 10-20 MPH. EXPERIMENTAL FIRE WEATHER TABLE FOR GLACIER BASIN PILE BURN. +++ 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 04/02-23 52 1 25 71 W 9 1 2469 W 25 56026 F 04/03-00 67 1 24 73 W 9 9 2 1 W49 2015 W 24 41889 F 04/03-01 67 1 23 75 W 9 1 1779 SW 23 36538 P 04/03-02 67 1 23 77 SW 9 1 1543 SW 23 31188 P 04/03-03 67 1 23 78 SW 9 9 2 1 W53 1308 SW 23 25837 P 04/03-04 67 1 22 79 W 10 1 1163 SW 24 24168 P 04/03-05 67 1 23 78 W 12 1 1018 W 25 22499 P 04/03-06 68 10 23 78 W 13 13 2 1 W41 873 W 28 20829 P 04/03-07 68 10 23 80 W 14 1 2238 W 29 60732 G 04/03-08 68 10 25 79 W 15 1 3603 W 31 100635 V 04/03-09 68 10 27 75 W 16 25 2 1 W67 4968 W 32 140537 V 04/03-10 68 10 29 69 W 16 1 5268 W 31 139478 V 04/03-11 68 10 31 64 W 15 1 5569 W 29 138418 V 04/03-12 82 30 33 60 W 14 22 2 1 W54 5870 W 26 137358 V 04/03-13 82 30 35 57 W 14 1 6327 SW 29 159879 E 04/03-14 82 30 35 55 W 14 1 6785 SW 31 182400 E 04/03-15 82 30 36 55 W 13 13 2 1 SW60 7243 SW 32 204921 E 04/03-16 82 30 36 56 W 12 1 6669 SW 29 169564 E 04/03-17 82 30 35 58 W 10 1 6094 SW 24 134208 V 04/03-18 100 69 33 63 W 8 8 2 1 S33 5520 SW 21 98851 G 04/03-19 100 69 32 65 W 8 1 5272 S 18 85132 G 04/03-20 100 69 30 70 NW 9 1 5024 S 16 71413 G 04/03-21 100 76 27 76 N 9 9 2 1 S37 4777 SE 14 57694 F 04/03-22 100 76 25 80 N 9 1 4814 SE 13 53661 F 04/03-23 100 76 24 83 NE 10 1 4852 E 12 49628 F 04/04-00 100 81 24 84 NE 10 10 2 1 S47 4890 E 10 45596 F 04/04-01 100 81 23 85 NE 10 1 4798 E 12 47306 F 04/04-02 100 81 22 85 NE 12 1 4705 E 12 49016 F 04/04-03 100 81 22 84 N 13 18 2 1 SW46 4613 E 13 50726 F 04/04-04 100 81 21 83 N 13 1 4528 E 13 49084 F 04/04-05 100 81 22 81 N 14 1 4444 E 13 47443 F 04/04-06 100 75 22 80 N 14 21 2 1 SW22 4359 E 13 45802 F 04/04-07 100 75 22 79 N 14 1 4601 E 12 47199 F 04/04-08 100 75 22 82 N 14 1 4842 E 12 48596 F 04/04-09 100 75 23 80 N 15 22 2 1 S20 5084 NE 12 49994 F 04/04-10 100 75 24 79 N 15 1 5137 NE 10 47254 F 04/04-11 100 75 25 77 N 15 1 5191 N 10 44515 F 04/04-12 100 75 25 76 N 15 23 2 1 W12 5244 N 9 41775 F 04/04-13 100 75 26 76 N 16 1 5364 N 12 53322 F 04/04-14 100 75 26 75 N 16 1 5484 NW 14 64868 G 04/04-15 100 75 27 76 N 17 25 2 1 W 9 5604 NW 16 76415 G 04/04-16 100 75 26 77 N 17 1 5498 NW 17 83619 G 04/04-17 100 75 25 79 N 18 1 5392 NW 20 90822 G 04/04-18 91 43 24 84 N 18 28 2 1 NW16 5286 NW 22 98025 G 04/04-19 91 43 22 86 NW 18 1 5192 NW 21 95244 G 04/04-20 91 43 20 91 NW 18 1 5097 NW 21 92462 G 04/04-21 91 43 18 97 NW 17 26 2 1 NW12 5003 NW 21 89680 G 04/04-22 91 43 16 100 NW 16 1 4966 NW 21 87089 G 04/04-23 91 43 15 100 NW 16 1 4930 NW 20 84498 G 04/05-00 81 43 14 99 NW 15 23 2 1 NW15 4893 NW 20 81908 G 04/05-01 81 43 13 99 NW 14 1 4748 NW 20 78776 G 04/05-02 81 43 13 98 W 14 1 4604 NW 18 75645 G 04/05-03 81 43 12 97 W 13 18 2 1 NW21 4459 NW 18 72513 G 04/05-04 81 43 12 96 W 12 1 4519 NW 21 81736 G 04/05-05 81 43 12 94 W 12 1 4578 NW 23 90959 G 04/05-06 58 10 13 92 W 10 10 2 1 NW25 4638 NW 25 100182 V 04/05-07 58 10 13 90 W 10 1 4850 NW 28 117755 V 04/05-08 58 10 15 81 W 9 1 5062 NW 31 135328 V 04/05-09 58 10 18 73 NW 9 9 2 1 NW23 5273 NW 33 152901 E 04/05-10 58 10 22 63 NW 9 1 6286 NW 35 190788 E 04/05-11 58 10 25 57 NW 8 1 7299 NW 36 228675 E 04/05-12 58 10 27 52 N 8 8 2 1 NW39 8311 NW 37 266562 E 04/05-13 58 10 29 49 N 7 1 8538 NW 36 260572 E 04/05-14 58 10 30 47 NE 7 1 8764 NW 33 254582 E 04/05-15 58 10 31 46 NE 6 6 2 1 NW64 8991 NW 32 248592 E 04/05-16 58 10 31 46 E 6 1 8430 NW 30 222669 E 04/05-17 58 10 30 48 SE 5 1 7869 NW 29 196745 E 04/05-18 33 12 29 51 SE 5 5 3 1 NW81 7308 NW 26 170822 E 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...GIMMESTAD REQUESTED BY...JAMES CHAMP REASON FOR REQUEST...PRESCRIBED .TAG 20090403.GLACI.01/BOU