FNUS75 KBOU 220036 FWSBOU SPOT FORECAST FOR SANTIALLES...USFS NATIONAL WEATHER SERVICE DENVER CO 637 PM MDT TUE APR 21 2009 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...WEAK WEST-NORTHWESTERLY FLOW ALOFT IS EXPECTED OVER THE FORECAST AREA TONIGHT AND WEDNESDAY WITH A HIGH PRESSURE RIDGE ALOFT. THE PRESSURE GRADIENT AT THE SURFACE IS PRETTY WEAK SO ANY ENHANCEMENT TO THE NORMAL DRAINAGE WIND PATTERN WILL NOT BE SIGNIFICANT. THE AIRMASS IS PRETTY DRY SO PRECIPITATION IS NOT EXPECTED THROUGH EARLY WEDNESDAY AFTERNOON...THEN ONLY AN ISOLATED THUNDERSTORM IS POSSIBLE WITH SOME INCREASED MOISTURE A WEAK UPPER LEVEL DISTURBANCE. ...THUNDERSTORMS IMPLY STRONG...GUSTY AND ERRATIC WINDS... .TONIGHT... SKY/WEATHER.........MOSTLY CLEAR. MIN TEMPERATURE.....37-43. MAX HUMIDITY........55-65%. 20-FOOT WINDS.......WEST 5-10 MPH THROUGH 2300...THEN WEST 7-15 MPH. TRANSPORT WINDS.....WEST 13-24 MPH. MIXING HEIGHT.......8400 FT AGL UNTIL 1900. 200-400 FT AGL AFTER 2100. SMOKE DISPERSAL.....EXCELLENT UNTIL 1900. POOR AFTER 2100. HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .WEDNESDAY... SKY/WEATHER.........MOSTLY SUNNY UNTIL 1300...THEN PARTLY CLOUDY(50-60%). ISOLATED THUNDERSTORMS AFTER 1300. MAX TEMPERATURE.....72-77. MIN HUMIDITY........18-26%. 20-FOOT WINDS.......WEST 10-18 MPH. TRANSPORT WINDS.....WEST 5-16 MPH. MIXING HEIGHT.......200-600 FT AGL UNTIL 1000. 14200-15200 FT AGL AFTER 1200. SMOKE DISPERSAL.....POOR UNTIL 1000. EXCELLENT AFTER 1400. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .WEDNESDAY NIGHT... SKY/WEATHER.........PARTLY CLOUDY(35-45%). ISOLATED THUNDERSTORMS UNTIL 2000. MIN TEMPERATURE.....40-45. MAX HUMIDITY........50-60%. 20-FOOT WINDS.......WEST 7-17 MPH. TRANSPORT WINDS.....WEST 12-20 MPH. MIXING HEIGHT.......12600 FT AGL UNTIL 1900. 200-400 FT AGL AFTER 2100. SMOKE DISPERSAL.....EXCELLENT UNTIL 1900. POOR AFTER 2100. HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .THURSDAY... SKY/WEATHER.........MOSTLY SUNNY UNTIL 1200...THEN PARTLY CLOUDY(40-50%). MAX TEMPERATURE.....73-78. MIN HUMIDITY........15-25%. 20-FOOT WINDS.......WEST 10-20 MPH. TRANSPORT WINDS.....WEST 16-24 MPH. MIXING HEIGHT.......200-600 FT AGL UNTIL 1000...THEN 3800 FT AGL UNTIL 1100...THEN 6800 FT AGL UNTIL 1200...THEN 10600-11600 FT AGL UNTIL 1400...THEN 14200-15200 FT AGL UNTIL 1700...THEN 12000 FT AGL. SMOKE DISPERSAL.....POOR UNTIL 1000...THEN GOOD UNTIL 1100...THEN VERY GOOD UNTIL 1200...THEN EXCELLENT. HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .FORECAST DAYS 3 THROUGH 5... .FRIDAY...PARTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS AND ISOLATED THUNDERSTORMS AFTER 1200. LOWS IN THE LOWER 40S. HIGHS IN THE MID 70S. SOUTHWEST WINDS AROUND 13 MPH WITH GUSTS TO AROUND 30 MPH. .SATURDAY...MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS. COOLER. LOWS IN THE UPPER 30S. HIGHS IN THE UPPER 50S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. .SUNDAY...CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS UNTIL 0600...THEN CHANCE OF RAIN SHOWERS UNTIL 1800...THEN SLIGHT CHANCE OF RAIN SHOWERS. LOWS IN THE MID 30S. HIGHS IN THE UPPER 50S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. .MONDAY...CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS UNTIL 1800...THEN CHANCE OF RAIN SHOWERS AND SNOW SHOWERS. LOWS IN THE UPPER 30S. HIGHS IN THE UPPER 50S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. EXPERIMENTAL FIRE WEATHER TABLE FOR SANTIALLES. +++ 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 04/21-18 15 0 64 26 W 15 21 3 1 NW32 7647 NW 23 149331 V 04/21-19 15 0 62 28 W 17 1 5215 NW 23 101835 V 04/21-20 15 0 58 33 W 18 1 2782 W 23 54340 F 04/21-21 15 0 53 39 W 18 29 3 1 NW24 350 W 23 6844 P 04/21-22 15 0 50 44 W 18 1 286 W 21 5376 P 04/21-23 15 0 48 48 W 18 1 221 W 20 3908 P 04/22-00 3 0 47 51 W 17 26 3 1 NW18 157 W 18 2440 P 04/22-01 3 0 45 53 W 16 1 146 W 16 2085 P 04/22-02 3 0 44 55 W 15 1 135 W 15 1730 P 04/22-03 3 0 43 55 W 14 20 3 1 W16 124 W 13 1375 P 04/22-04 3 0 43 55 W 13 1 127 W 13 1358 P 04/22-05 3 0 43 53 W 13 1 130 W 12 1341 P 04/22-06 15 0 44 50 W 12 12 3 1 W13 132 W 12 1324 P 04/22-07 15 0 45 50 W 9 1 294 W 10 2085 P 04/22-08 15 0 49 44 SW 7 1 456 SW 8 2847 P 04/22-09 15 0 54 36 SW 6 6 3 1 W13 618 SW 7 3608 P 04/22-10 15 0 59 30 SW 7 1 4808 SW 9 48188 F 04/22-11 15 0 64 25 SW 10 1 8998 W 10 92767 G 04/22-12 55 10 67 22 W 14 20 4 2 W14 13188 W 12 137348 V 04/22-13 55 10 70 20 W 16 2 14099 W 13 151135 E 04/22-14 55 10 71 19 W 17 2 15008 W 13 164923 E 04/22-15 55 10 72 19 W 18 28 4 2 W 8 15918 W 13 178710 E 04/22-16 55 10 72 19 W 18 2 14545 W 14 176865 E 04/22-17 55 10 71 21 W 17 2 13171 W 16 175020 E 04/22-18 55 10 68 22 W 16 24 3 2 W14 11797 W 17 173175 E 04/22-19 55 10 66 24 W 16 2 8019 W 18 118182 V 04/22-20 55 9 61 28 W 17 1 4241 W 20 63188 G 04/22-21 55 9 56 34 W 17 25 4 1 NW12 462 W 21 8195 P 04/22-22 55 9 52 38 W 15 1 360 W 18 5997 P 04/22-23 55 9 50 42 W 13 1 257 W 15 3798 P 04/23-00 24 0 48 44 W 12 16 5 1 W12 155 W 13 1600 P 04/23-01 24 0 46 47 W 13 1 141 W 13 1567 P 04/23-02 24 0 45 49 W 15 1 126 W 15 1533 P 04/23-03 24 0 44 50 W 16 24 6 1 W18 112 W 16 1499 P 04/23-04 24 0 43 50 W 17 1 113 W 16 1528 P 04/23-05 24 0 43 49 W 16 1 113 W 16 1558 P 04/23-06 21 0 44 48 W 17 25 4 1 W18 113 W 16 1587 P 04/23-07 21 0 45 46 W 18 1 264 W 17 4510 P 04/23-08 21 0 49 41 W 18 1 415 W 20 7433 P 04/23-09 21 0 54 35 W 18 29 6 1 W21 566 W 21 10356 P 04/23-10 21 0 60 28 W 18 1 3374 W 21 57763 F 04/23-11 21 0 65 23 W 18 1 6182 W 20 105171 V 04/23-12 47 0 68 21 W 17 26 5 1 W24 8990 W 20 152578 E 04/23-13 47 0 71 19 W 17 1 11041 W 20 189938 E 04/23-14 47 0 72 18 W 18 1 13092 W 21 227298 E 04/23-15 47 0 73 17 W 18 28 4 1 W23 15144 W 21 264658 E 04/23-16 47 0 73 17 W 17 1 13101 W 21 230838 E 04/23-17 47 0 72 18 W 16 1 11059 W 21 197018 E 04/23-18 47 0 69 21 SW 14 20 4 1 W23 9016 W 21 163197 E 04/23-19 47 0 67 23 SW 13 1 6090 W 18 109667 V 04/23-20 45 0 62 27 W 13 1 3163 W 16 56136 F 04/23-21 45 0 57 33 W 12 16 4 1 SW13 237 W 13 2606 P 04/23-22 45 0 53 37 W 12 1 206 W 13 2260 P 04/23-23 45 0 51 40 W 12 1 174 W 13 1915 P 04/24-00 45 0 49 43 W 12 15 5 1 SW15 143 W 13 1570 P 04/24-01 45 0 47 45 W 12 1 136 W 14 1563 P 04/24-02 45 0 46 47 W 13 1 129 W 14 1555 P 04/24-03 45 0 45 48 W 14 18 5 1 SW20 122 W 15 1548 P 04/24-04 45 0 44 49 W 15 1 139 W 16 2005 P 04/24-05 45 0 44 48 W 16 1 156 W 18 2461 P 04/24-06 57 0 45 51 W 16 22 5 1 S23 173 W 20 2918 P 04/24-07 57 0 46 49 W 15 1 414 W 18 6314 P 04/24-08 57 0 50 45 W 15 1 656 SW 18 9710 P 04/24-09 57 0 55 39 SW 13 17 4 1 SW30 898 SW 17 13107 P 04/24-10 57 0 60 31 SW 13 1 3675 SW 20 76539 G 04/24-11 57 0 64 26 SW 12 1 6453 SW 23 139971 V 04/24-12 59 10 68 22 SW 10 10 3 2 SW37 9231 SW 25 203404 E 04/24-13 59 10 70 19 SW 10 2 10651 SW 25 234227 E 04/24-14 59 10 72 17 SW 12 2 12070 SW 25 265051 E 04/24-15 59 10 73 16 SW 13 17 3 2 SW30 13490 SW 25 295875 E 04/24-16 59 10 73 17 SW 14 2 12025 SW 25 266186 E 04/24-17 59 10 71 18 SW 15 2 10560 SW 25 236496 E 04/24-18 78 10 68 21 SW 15 23 3 2 SW38 9095 SW 26 206807 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...WFO BOULDER REQUESTED BY...FORT COLLINS DISPATCH REASON FOR REQUEST...WILDFIRE .TAG 20090421.SANTI.01/BOU