FNUS75 KBOU 200333 FWSBOU SPOT FORECAST FOR BLUE VALLEY RANCH BROADCAST BURN...CSFS NATIONAL WEATHER SERVICE DENVER CO 932 PM MDT MON APR 19 2010 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...NORTHWEST FLOW ALOFT WILL BE OVER THE AREA AS AN UPPER RIDGE MOVES INTO WESTERN COLORADO. A DISTURBANCE IN THE FLOW WILL PUSH A COLD FRONT INTO NORTHEASTERN COLORADO...WHICH SHOULD NOT HAVE TOO MUCH OF AN EFFECT ON THE BURN AREA. THE INSTABILITY WILL BE BETTER HOWEVER SO EXPECT A BETTER CHANCE OF SHOWERS OVER THE AREA COMPARED TO MONDAY. WILL BE SLIGHTLY CLOUDIER AS WELL FROM NEARBY SHOWERS AND THUNDERSTORMS WHICH SHOULD KEEP HIGHS A FEW DEGREES COOLER FROM MONDAY AND KEEP HUMIDITIES A LITTLE WETTER. WEDNESDAY WILL HAVE SLIGHTLY POORER DISPERSION AS UPPER RIDGE PASSES OVER...HOWEVER THURSDAY WILL GET BETTER AS A DEEP LOW OVER THE GREAT BASIN PUSHES THE RIDGE TO THE EAST AND INCREASES WINDS ALOFT. ...THUNDERSTORMS IMPLY STRONG...GUSTY AND ERRATIC WINDS... .TUESDAY... SKY/WEATHER.........PARTLY CLOUDY(40-50%) UNTIL 1200...THEN MOSTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS AFTER 1200. MAX TEMPERATURE.....59. MIN HUMIDITY........27%. WIND (20 FT)........UPSLOPE/UPVALLEY 4-10 MPH. TRANSPORT WINDS.....LIGHT WINDS UNTIL 1200...THEN WEST 12-16 MPH. MIXING HEIGHT.......3200-4200 FT AGL AFTER 1000 UNTIL 1200...THEN 7600-8600 FT AGL UNTIL 1500...THEN 8600-9600 FT AGL UNTIL 1700...THEN 6800 FT AGL. SMOKE DISPERSAL.....POOR UNTIL 1100...THEN FAIR UNTIL 1200...THEN GOOD UNTIL 1300...THEN VERY GOOD UNTIL 1600...THEN GOOD. HAINES INDEX........3 VERY LOW. .TUESDAY NIGHT... SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS UNTIL 2400. MIN TEMPERATURE.....28. MAX HUMIDITY........73%. WIND (20 FT)........DOWNSLOPE/DOWNVALLEY 2-8 MPH. TRANSPORT WINDS.....SOUTH AROUND 12 MPH UNTIL 2400...THEN LIGHT. MIXING HEIGHT.......5600 FT AGL UNTIL 1900. SMOKE DISPERSAL.....FAIR UNTIL 1900. POOR AFTER 2100. HAINES INDEX........2 VERY LOW. .WEDNESDAY... SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS AFTER 1200. MAX TEMPERATURE.....60. MIN HUMIDITY........28%. WIND (20 FT)........UPSLOPE/UPVALLEY 4-10 MPH UNTIL 1500...THEN SOUTHEAST AROUND 8 MPH. TRANSPORT WINDS.....LIGHT WINDS UNTIL 1200...THEN SOUTH AROUND 12 MPH. MIXING HEIGHT.......5800-6800 FT AGL AFTER 1200. SMOKE DISPERSAL.....POOR UNTIL 1200. GOOD AFTER 1500. HAINES INDEX........2 VERY LOW. .FORECAST DAYS 3 THROUGH 5... .THURSDAY...MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS AND SNOW SHOWERS UNTIL 1200...THEN SLIGHT CHANCE OF THUNDERSTORMS. COOLER. LOWS IN THE UPPER 20S. HIGHS IN THE MID 40S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. .FRIDAY...MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS AND SNOW SHOWERS UNTIL 1200...THEN SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER 20S. HIGHS IN THE MID 40S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. .SATURDAY...MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS UNTIL 1200...THEN SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER 20S. HIGHS IN THE MID 40S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. .SUNDAY...MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS AND SNOW SHOWERS UNTIL 1200...THEN SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE MID 20S. HIGHS IN THE MID 40S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. EXPERIMENTAL FIRE WEATHER TABLE FOR BLUE VALLEY RANCH BROADCAST 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 04/19-21 44 10 50 36 SW 10 10 3 1 W16 3669 W 3 10458 P 04/19-22 44 10 46 43 SW 9 1 2525 W 5 7463 P 04/19-23 44 0 43 49 SW 9 1 1380 SW 6 4467 P 04/20-00 38 0 40 55 SW 8 8 3 1 W21 235 SW 7 1472 P 04/20-01 38 0 38 61 SW 7 1 215 SW 7 1227 P 04/20-02 38 0 37 66 S 6 1 195 SW 6 983 P 04/20-03 33 0 35 69 S 5 5 3 1 W28 175 SW 5 738 P 04/20-04 33 0 34 70 SW 3 1 187 SW 5 672 P 04/20-05 33 0 34 70 SW 3 1 200 SW 3 605 P 04/20-06 46 0 35 65 SW 2 2 2 1 NW28 212 SW 3 539 P 04/20-07 46 0 36 61 CALM 1 404 SW 3 1033 P 04/20-08 46 0 38 56 CALM 1 596 SW 3 1526 P 04/20-09 46 0 42 49 CALM 1 3 1 NW26 788 SW 3 2019 P 04/20-10 46 0 46 41 SW 2 1 2658 SW 6 23378 P 04/20-11 46 0 50 36 W 3 1 4528 W 9 44737 F 04/20-12 65 20 53 32 W 5 5 3 3 NW20 6398 W 14 76776 G 04/20-13 65 20 55 30 W 5 3 8097 W 15 105262 V 04/20-14 65 20 56 28 SW 5 3 9156 W 15 119033 V 04/20-15 65 20 57 27 SW 5 5 2 3 W18 10215 W 15 132790 V 04/20-16 65 20 57 27 SW 5 3 8074 W 14 96888 G 04/20-17 65 20 56 27 SW 5 3 6862 W 13 75482 G 04/20-18 72 20 53 30 SW 5 5 2 3 W18 5650 W 10 48731 F 04/20-19 72 20 50 32 SW 5 3 3829 SW 8 32794 P 04/20-20 72 20 46 38 S 5 3 2008 S 7 16858 P 04/20-21 72 20 41 46 S 5 5 2 3 W13 187 S 6 921 P 04/20-22 72 20 38 53 S 5 3 167 S 6 833 P 04/20-23 72 20 36 58 S 5 3 146 S 6 745 P 04/21-00 72 0 34 61 S 5 5 2 1 NW 8 126 S 6 658 P 04/21-01 72 0 32 65 SE 5 1 124 S 6 584 P 04/21-02 72 0 31 69 SE 3 1 122 SE 5 510 P 04/21-03 72 0 30 71 SE 3 3 2 1 W12 120 SE 5 437 P 04/21-04 72 0 30 73 SE 3 1 127 SE 3 441 P 04/21-05 72 0 30 72 SE 3 1 134 SE 3 446 P 04/21-06 72 0 30 71 SE 3 3 2 1 SW13 141 SE 3 450 P 04/21-07 72 0 31 69 SE 3 1 204 SE 3 557 P 04/21-08 72 0 35 61 E 2 1 268 SE 3 663 P 04/21-09 72 0 39 52 E 2 2 2 1 SW18 331 SE 2 770 P 04/21-10 72 0 45 43 SE 2 1 2091 SE 5 12857 P 04/21-11 72 0 49 37 S 2 1 3850 S 6 24943 P 04/21-12 80 20 52 33 S 3 3 2 3 SW17 5610 S 8 37030 P 04/21-13 80 20 55 30 S 5 3 6049 S 9 47439 F 04/21-14 80 20 57 29 S 7 3 6489 S 10 57848 F 04/21-15 80 20 58 28 S 8 8 2 3 S16 6929 S 12 68258 G 04/21-16 80 20 58 28 S 8 3 6456 S 13 68160 G 04/21-17 80 20 56 29 SE 8 3 5983 S 14 68061 G 04/21-18 80 20 54 32 SE 8 8 2 3 S14 5510 S 14 67963 G 04/21-19 80 20 51 33 SE 7 3 3755 SE 13 45965 F 04/21-20 80 20 47 38 SE 7 3 2000 SE 10 23967 P 04/21-21 80 20 42 45 SE 6 6 2 3 S20 244 SE 9 1968 P 04/21-22 80 20 38 51 SE 6 3 240 SE 9 1849 P 04/21-23 80 20 36 55 SE 6 3 235 SE 8 1729 P 04/22-00 80 20 34 59 SE 6 6 2 1 S16 230 SE 8 1609 P 04/22-01 80 20 33 63 SE 5 1 219 SE 7 1327 P 04/22-02 80 20 31 67 E 5 1 208 SE 6 1045 P 04/22-03 80 20 30 69 E 3 3 2 1 S17 197 E 5 763 P 04/22-04 80 20 30 71 E 2 1 212 E 5 754 P 04/22-05 80 20 30 71 E 2 1 227 E 3 746 P 04/22-06 80 20 30 70 E 2 2 2 1 S30 242 E 3 737 P 04/22-07 80 20 32 67 E 2 1 271 E 3 885 P 04/22-08 80 20 32 67 E 2 1 300 E 3 1034 P 04/22-09 80 20 35 61 NE 3 3 2 1 S29 329 E 5 1182 P 04/22-10 80 20 38 55 E 6 1 296 E 7 1689 P 04/22-11 80 20 40 51 SE 9 1 263 SE 10 2197 P 04/22-12 73 20 42 48 S 12 12 2 3 S32 230 S 14 2705 P 04/22-13 73 20 43 45 S 13 3 793 S 15 11785 P 04/22-14 73 20 44 44 S 13 3 1357 S 16 20865 P 04/22-15 73 20 45 43 S 12 12 3 3 S41 1921 S 18 29946 P 04/22-16 73 20 45 42 S 10 3 2980 S 17 44308 F 04/22-17 73 20 44 44 SW 8 3 4040 SW 17 58671 F 04/22-18 73 20 43 46 W 7 7 3 3 S29 5100 SW 16 73033 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...RON COUSINEAU REASON FOR REQUEST...PRESCRIBED .TAG 20100420.BLUEV.01/BOU