FNUS75 KBOU 311045 FWSBOU SPOT FORECAST FOR PELLA CROSSING...USFS NATIONAL WEATHER SERVICE DENVER CO 445 AM MDT WED MAR 31 2010 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...SOUTHWEST FLOW ALOFT WILL BE OVER THE AREA TODAY WITH SOME MID AND HIGH LEVEL CLOUDINESS. A WEAK COLD FRONT WILL MOVE THROUGH THE AREA EARLY THIS MORNING WITH NORTH TO NORTHEAST WINDS OF 10-15 MPH. BY 1200 THE WINDS WILL BECOME MORE SOUTHEAST AT 10-15 MPH. SMOKE DISPERSAL WILL BE POOR THROUGH 1000...FAIR FROM 1000-1200...THEN GOOD AFTER 1200. IF INVERSIONS WITH THE WEAK FRONT DO NOT BREAK AS QUICKLY AS FORECAST THEN THESE SMOKE DISPERSAL TIMES COULD BE OFF BY AN HOUR OR TWO. ...THUNDERSTORMS IMPLY STRONG...GUSTY AND ERRATIC WINDS... .TODAY... SKY/WEATHER.........PARTLY CLOUDY(50-60%). MAX TEMPERATURE.....69. MIN HUMIDITY........23%. WIND (20 FT)........NORTHWEST 8-14 MPH WITH GUSTS TO AROUND 20 MPH UNTIL 0900...THEN NORTHEAST UNTIL 1200...THEN SOUTHEAST 8-12 MPH. TRANSPORT WINDS.....SOUTHWEST 13-24 MPH. MIXING HEIGHT.......2000-3000 FT AGL UNTIL 1000...THEN 6000-7000 FT AGL UNTIL 1300...THEN 9200-10200 FT AGL UNTIL 1700...THEN 7200 FT AGL. SMOKE DISPERSAL.....POOR UNTIL 1000...THEN FAIR UNTIL 1200... THEN GOOD. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .TONIGHT... SKY/WEATHER.........MOSTLY CLOUDY. MIN TEMPERATURE.....36. MAX HUMIDITY........68%. WIND (20 FT)........NORTH 8-11 MPH UNTIL 2100...THEN DOWNSLOPE/DOWNVALLEY 2-8 MPH UNTIL 2400...THEN WEST 8-13 MPH. TRANSPORT WINDS.....SOUTHEAST 5-16 MPH UNTIL 2400...THEN WEST 4-12 MPH. MIXING HEIGHT.......5400 FT AGL UNTIL 1900. 200-600 FT AGL AFTER 2100. SMOKE DISPERSAL.....GOOD UNTIL 1900. POOR AFTER 2100. HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .THURSDAY... SKY/WEATHER.........MOSTLY CLOUDY(50-60%). SLIGHT CHANCE OF RAIN. MAX TEMPERATURE.....59. MIN HUMIDITY........27%. WIND (20 FT)........UPSLOPE/UPVALLEY 4-10 MPH UNTIL 1500...THEN WEST 9-10 MPH. TRANSPORT WINDS.....SOUTH 5-16 MPH. MIXING HEIGHT.......800-1800 FT AGL UNTIL 1100...THEN 4200-5200 FT AGL. SMOKE DISPERSAL.....POOR UNTIL 1200. GOOD AFTER 1400. HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .FORECAST DAYS 3 THROUGH 5... .FRIDAY...PARTLY CLOUDY. SLIGHT CHANCE OF RAIN AND SNOW UNTIL 1800. COOLER. LOWS IN THE LOWER 30S. HIGHS IN THE MID 40S. NORTH WINDS AROUND 8 MPH WITH GUSTS TO AROUND 25 MPH. .SATURDAY...PARTLY CLOUDY. WARMER. LOWS IN THE UPPER 20S. HIGHS IN THE LOWER 60S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. .SUNDAY...PARTLY CLOUDY. LOWS IN THE LOWER 30S. HIGHS IN THE LOWER 60S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. EXPERIMENTAL FIRE WEATHER TABLE FOR PELLA CROSSING. +++ 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 03/31-04 35 0 47 52 W 25 1 427 W 31 11044 P 03/31-05 35 0 47 49 W 23 1 553 W 29 13179 P 03/31-06 51 0 48 46 W 14 20 4 1 SW63 679 W 26 15313 P 03/31-07 51 0 49 43 NW 9 1 1642 W 20 17079 P 03/31-08 51 0 50 41 N 8 1 2604 SW 13 18844 P 03/31-09 51 0 53 36 NE 9 9 2 1 SW61 3566 SW 7 20610 P 03/31-10 51 0 57 32 NE 9 1 4929 SW 10 52554 F 03/31-11 51 0 60 29 E 9 1 6291 S 14 84498 G 03/31-12 53 0 63 27 SE 9 9 2 1 SW45 7654 S 17 116442 V 03/31-13 53 0 65 25 SE 9 1 8674 S 20 149524 V 03/31-14 53 0 67 24 SE 9 1 9694 SW 21 182606 E 03/31-15 53 0 67 23 SE 9 9 2 1 SW48 10714 SW 23 215688 E 03/31-16 53 0 67 23 E 9 1 8946 SW 21 167651 E 03/31-17 53 0 65 25 E 10 1 7177 S 18 119613 V 03/31-18 76 0 61 28 NE 10 10 3 1 SW39 5409 S 15 71575 G 03/31-19 76 0 59 31 NE 9 1 3833 S 12 48186 F 03/31-20 76 0 55 36 N 8 1 2257 SE 7 24797 P 03/31-21 76 0 50 44 NW 7 7 2 1 SW26 681 E 2 1408 P 03/31-22 76 0 46 49 NW 7 1 525 E 3 1280 P 03/31-23 76 0 44 54 NW 7 1 370 N 5 1153 P 04/01-00 76 2 42 57 N 7 7 3 1 SW39 215 NW 6 1025 P 04/01-01 76 2 40 61 NW 7 1 196 NW 7 1173 P 04/01-02 76 2 39 64 W 8 1 178 W 9 1321 P 04/01-03 76 2 39 66 W 8 8 3 1 SW45 160 W 10 1468 P 04/01-04 76 2 38 68 W 8 1 184 W 10 1671 P 04/01-05 76 2 38 67 W 7 1 209 W 10 1874 P 04/01-06 61 10 39 66 W 7 7 2 1 SW36 233 W 10 2078 P 04/01-07 61 10 40 54 SW 6 1 558 SW 9 3386 P 04/01-08 61 10 40 53 S 5 1 883 S 7 4694 P 04/01-09 61 10 43 47 E 3 3 2 1 SW39 1207 S 6 6002 P 04/01-10 61 10 47 41 E 3 1 2440 S 7 18276 P 04/01-11 61 10 50 37 E 5 1 3673 S 8 30550 P 04/01-12 61 10 52 33 E 5 5 2 1 SW44 4906 S 10 42824 F 04/01-13 61 10 54 31 SE 5 1 4970 S 12 51410 F 04/01-14 61 10 56 29 S 5 1 5035 S 14 59997 F 04/01-15 61 10 56 28 W 3 3 3 1 S32 5100 S 15 68583 G 04/01-16 61 10 56 27 W 8 1 5036 S 16 72602 G 04/01-17 61 10 55 28 W 10 1 4972 SW 17 76620 G 04/01-18 66 10 52 32 W 14 14 3 1 S24 4908 W 18 80639 G 04/01-19 66 10 50 35 W 13 1 3892 W 18 62706 G 04/01-20 66 10 47 40 W 10 1 2876 W 17 44774 F 04/01-21 66 10 43 47 W 10 10 3 1 S13 1860 W 16 26842 P 04/01-22 66 10 40 52 W 9 1 2715 W 14 30318 P 04/01-23 66 10 39 56 NW 6 1 3571 W 12 33794 P 04/02-00 66 10 38 59 N 2 2 2 1 SW 6 4426 W 9 37270 P 04/02-01 66 10 36 62 N 3 1 3748 NW 9 30797 P 04/02-02 66 10 35 64 N 3 1 3071 NW 9 24323 P 04/02-03 66 10 35 64 NE 5 5 3 1 W17 2393 NW 8 17849 P 04/02-04 66 10 34 64 N 6 1 3106 NW 15 46766 F 04/02-05 66 10 34 63 N 6 1 3820 NW 21 75683 G 04/02-06 70 10 35 61 N 7 7 2 1 NW29 4534 NW 26 104600 V 04/02-07 70 10 35 60 N 10 1 4628 N 29 113978 V 04/02-08 70 10 36 60 N 13 1 4723 N 30 123357 V 04/02-09 70 10 38 56 N 15 23 2 1 NW35 4818 N 32 132736 V 04/02-10 70 10 40 52 N 15 1 6513 N 31 173440 E 04/02-11 70 10 42 48 N 15 1 8207 N 30 214143 E 04/02-12 55 10 44 46 N 16 24 3 1 NW30 9901 N 30 254847 E 04/02-13 55 10 45 43 N 14 1 10471 NW 28 244524 E 04/02-14 55 10 46 41 N 13 1 11041 NW 24 234201 E 04/02-15 55 10 46 41 N 10 10 3 1 NW30 11611 NW 22 223877 E 04/02-16 55 10 46 40 N 8 1 10685 NW 18 174186 E 04/02-17 55 10 45 41 E 6 1 9759 W 14 124494 V 04/02-18 40 0 44 47 E 3 3 2 1 W30 8833 W 9 74803 G 04/02-19 40 0 42 50 SE 3 1 7408 W 12 68275 G 04/02-20 40 0 40 56 S 5 1 5982 W 13 61747 G 04/02-21 40 0 37 63 SW 5 5 2 1 W31 4556 W 14 55219 F 04/02-22 40 0 36 68 SW 6 1 3725 W 16 48237 F 04/02-23 40 0 34 71 SW 7 1 2893 W 17 41255 F 04/03-00 12 0 34 73 W 7 7 2 1 NW28 2062 W 20 34273 P 04/03-01 12 0 33 74 W 9 1 1619 W 20 27237 P 04/03-02 12 0 32 74 W 10 1 1175 W 21 20201 P 04/03-03 12 0 32 72 W 10 10 2 1 W35 732 W 21 13165 P 04/03-04 12 0 31 70 W 9 1 788 W 20 13134 P 04/03-05 12 0 31 68 W 8 1 843 W 18 13102 P 04/03-06 30 0 32 65 W 7 7 2 1 W31 899 W 17 13071 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 $$ WFO BOULDER REQUESTED BY...BOULDER COUNTY SHERIFF S OFFICE REASON FOR REQUEST...PRESCRIBED .TAG 20100331.PELLA.01/BOU