FNUS75 KBOU 191611 FWSBOU SPOT FORECAST FOR PHANTOM CANYON UNIT 2 3 BLACKLINING...NATURE CONSERVANCY NATIONAL WEATHER SERVICE DENVER CO 1000 AM MDT MON APR 19 2010 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...DIURNAL WINDS ARE EXPECTED TODAY WITH DEEP MIXING INTO NORTHWEST WINDS ALOFT. WIND GUSTS TO AROUND 40 MPH ARE POSSIBLE NEAR THUNDERSTORMS...BUT THE COVERAGE WILL BE LOW. ON TUESDAY A COLD FRONT WILL MOVE THROUGH IN THE MORNING ALLOWING DEEP MIXING SOONER AND GIVING NORTHERLY WINDS. THE WINDS WILL TURN MORE EASTERLY IN THE AFTERNOON WITH LESS MIXING BY LATE AFTERNOON. THERE WILL BE A BETTER CHANCE OF THUNDERSTORMS ON TUESDAY AFTERNOON. THE TREND FOR THE REST OF THE WEEK WILL BE COOLER TEMPERATURES AND HIGHER HUMIDITIES ALONG WITH MORE NUMEROUS SHOWERS AND THUNDERSTORMS. ...THUNDERSTORMS IMPLY STRONG...GUSTY AND ERRATIC WINDS... .TODAY... SKY/WEATHER.........MOSTLY SUNNY UNTIL 1200...THEN PARTLY CLOUDY(50-60%). ISOLATED THUNDERSTORMS AFTER 1400. MAX TEMPERATURE.....64-68. MIN HUMIDITY........20-25%. WIND (20 FT)........UPSLOPE/UPVALLEY 2-5 MPH BECOMING 4-10 MPH. TRANSPORT WINDS.....NORTHWEST 5 MPH INCREASING TO 12 MPH. MIXING HEIGHT.......10 THOUSAND FT AGL RISING TO 12 THOUSAND FT AGL. SMOKE DISPERSAL.....FAIR UNTIL 1100...THEN GOOD....VERY GOOD AFTER 1300. HAINES INDEX........3 VERY LOW. .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY(35-45%). ISOLATED THUNDERSTORMS UNTIL 2300. MIN TEMPERATURE.....38-42. MAX HUMIDITY........53-63%. WIND (20 FT)........DOWNSLOPE/DOWNVALLEY 2-8 MPH. TRANSPORT WINDS.....NORTHWEST 10 MPH BECOMING DOWNSLOPE 5 MPH. MIXING HEIGHT.......11000 FT AGL LOWERING TO 5000 FT AGL BY 2100 AND 1000 FT AGL BY 0300. SMOKE DISPERSAL.....GOOD UNTIL 1900...THEN FAIR. POOR AFTER 2100. HAINES INDEX........3 VERY LOW. .TUESDAY... SKY/WEATHER.........PARTLY CLOUDY(30-40%) UNTIL 1200...THEN MOSTLY CLOUDY. CHANCE OF THUNDERSTORMS AFTER 1200. MAX TEMPERATURE.....57-61. MIN HUMIDITY........22-27%. WIND (20 FT)........NORTH WINDS 8-16 MPH UNTIL 1500...THEN EAST 8-11 MPH. TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH. MIXING HEIGHT.......RISING TO 4000 FT AGL BY 1000 AND 8000 FT AGL BY 1400. SMOKE DISPERSAL.....POOR UNTIL 1000...THEN FAIR UNTIL 1200...THEN GOOD UNTIL 1500...THEN FAIR. HAINES INDEX........3 VERY LOW. .FORECAST DAYS 3 THROUGH 5... .WEDNESDAY...MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS UNTIL 1200...THEN CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS IN THE UPPER 50S. SOUTHEAST WINDS AROUND 8 MPH. .THURSDAY...MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS AND SNOW SHOWERS UNTIL 1200...THEN SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE MID 30S. HIGHS AROUND 50. NORTHEAST WINDS AROUND 9 MPH. .FRIDAY...MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS AND SNOW SHOWERS UNTIL 1200...THEN SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE MID 30S. HIGHS AROUND 50. WEST WINDS AROUND 8 MPH. EXPERIMENTAL FIRE WEATHER TABLE FOR PHANTOM CANYON UNIT 2 3 BLACKLINING. +++ 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 04/19-09 25 0 50 46 NW 5 5 3 1 NW23 870 NW 6 4613 P 04/19-10 26 0 55 40 N 5 1 4565 NW 8 41541 F 04/19-11 26 0 59 35 N 5 1 8260 NW 9 78468 G 04/19-12 52 0 61 32 N 5 5 3 1 W23 11955 W 12 115396 V 04/19-13 52 0 63 32 NE 5 1 12299 W 10 105999 V 04/19-14 52 20 64 31 E 6 3 12643 W 9 96601 G 04/19-15 54 20 64 31 SE 6 6 3 3 W16 12987 W 8 87204 G 04/19-16 54 20 64 29 E 6 3 12281 W 7 74861 G 04/19-17 54 20 63 27 E 6 3 11575 W 6 62518 G 04/19-18 54 20 62 27 E 6 6 3 3 W17 10870 W 6 50175 F 04/19-19 54 20 60 29 E 3 3 7599 SW 6 35804 P 04/19-20 54 20 56 34 CALM 3 4329 SE 7 21432 P 04/19-21 41 20 53 39 CALM 0 3 3 W23 1059 E 8 7060 P 04/19-22 41 20 50 43 CALM 3 826 SE 7 5360 P 04/19-23 41 0 48 47 CALM 1 593 SE 7 3659 P 04/20-00 29 0 46 50 SW 2 2 3 1 W28 360 S 6 1959 P 04/20-01 29 0 45 53 W 3 1 312 S 6 1604 P 04/20-02 29 0 44 54 W 3 1 263 SW 6 1249 P 04/20-03 30 0 43 56 W 5 5 3 1 W28 214 W 5 894 P 04/20-04 30 0 42 57 W 6 1 186 W 6 904 P 04/20-05 30 0 41 58 W 7 1 158 W 7 914 P 04/20-06 35 0 41 58 W 8 8 3 1 NW33 129 W 8 924 P 04/20-07 35 0 42 55 NW 9 1 202 W 10 2061 P 04/20-08 35 0 45 49 NW 12 1 275 NW 13 3197 P 04/20-09 35 0 48 44 N 13 17 3 1 NW30 348 N 14 4334 P 04/20-10 35 0 51 38 N 13 1 1989 NW 14 22630 P 04/20-11 35 0 54 34 N 13 1 3658 NW 14 41316 F 04/20-12 73 28 57 31 N 13 13 3 4 NW29 5328 NW 13 60003 G 04/20-13 73 28 59 28 NE 12 4 6004 NW 10 49217 F 04/20-14 73 28 59 27 NE 12 4 6681 NW 7 38430 P 04/20-15 73 28 59 27 E 10 10 2 4 W24 7357 NW 5 27643 P 04/20-16 73 28 59 27 E 9 4 6821 N 3 21259 P 04/20-17 73 28 59 27 E 8 4 6284 E 2 14874 P 04/20-18 73 28 57 29 SE 7 7 2 4 W25 5747 CALM 8489 P 04/20-19 73 28 55 33 SE 7 4 4863 SE 5 16466 P 04/20-20 73 28 52 39 SE 8 4 3978 SE 8 24443 P 04/20-21 73 28 48 47 SE 8 8 2 4 W22 3094 S 12 32421 P 04/20-22 73 28 45 54 SE 8 4 2618 SE 13 28383 P 04/20-23 73 28 43 60 SE 9 4 2143 SE 14 24346 P 04/21-00 71 10 42 65 SE 9 9 2 1 W16 1668 SE 14 20309 P 04/21-01 71 10 40 70 SE 9 1 1438 SE 14 16990 P 04/21-02 71 10 39 73 SE 9 1 1207 S 13 13672 P 04/21-03 71 10 38 75 SE 8 8 2 1 W22 977 S 13 10353 P 04/21-04 71 10 38 76 SE 7 1 994 S 12 9783 P 04/21-05 71 10 38 75 SE 6 1 1011 S 10 9213 P 04/21-06 71 10 39 73 SE 6 6 3 1 W15 1028 S 9 8643 P 04/21-07 71 10 40 70 SE 6 1 1473 S 9 12276 P 04/21-08 71 10 42 64 SE 7 1 1918 S 9 15909 P 04/21-09 71 10 46 55 SE 7 7 2 1 W10 2364 S 9 19542 P 04/21-10 71 10 50 47 SE 7 1 3143 S 10 29154 P 04/21-11 71 10 54 41 SE 8 1 3923 S 12 38766 P 04/21-12 73 30 56 38 SE 8 8 2 4 SW16 4702 S 12 48378 F 04/21-13 73 30 58 36 SE 8 4 4784 S 14 55622 F 04/21-14 73 30 58 37 SE 9 4 4866 S 15 62865 G 04/21-15 73 30 58 37 SE 9 9 2 4 SW16 4947 S 16 70108 G 04/21-16 73 30 58 37 SE 9 4 4946 S 17 73417 G 04/21-17 73 30 58 37 SE 10 4 4944 S 18 76727 G 04/21-18 73 30 57 37 SE 10 10 3 4 S12 4942 S 18 80036 G 04/21-19 73 30 55 36 SE 10 4 4214 S 21 72813 G 04/21-20 73 30 51 39 SE 10 4 3486 SE 23 65590 G 04/21-21 73 30 47 42 SE 10 10 2 4 S15 2757 SE 24 58368 F 04/21-22 73 30 44 46 SE 10 4 2196 SE 23 45715 F 04/21-23 73 30 42 50 SE 9 4 1634 SE 23 33061 P 04/22-00 69 20 41 54 E 9 9 2 1 S38 1072 SE 22 20408 P 04/22-01 69 20 40 61 SE 10 1 880 SE 21 16344 P 04/22-02 69 20 38 68 SE 10 1 688 SE 20 12280 P 04/22-03 69 20 38 74 SE 12 12 2 1 S47 496 SE 20 8217 P 04/22-04 69 20 37 75 SE 12 1 616 SE 18 9326 P 04/22-05 69 20 37 72 SE 12 1 736 SE 17 10436 P 04/22-06 69 20 38 69 SE 10 10 3 1 S39 855 SE 15 11545 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 $$ FORECASTER...GIMMESTAD REQUESTED BY...ERICK STAHLIN REASON FOR REQUEST...PRESCRIBED .TAG 20100419.PHANT.01/BOU