FNUS75 KBOU 211840 FWSBOU SPOT FORECAST FOR HALL RANCH PA4 U5 S3...COUNTY NATIONAL WEATHER SERVICE DENVER CO 1118 AM MST WED DEC 21 2011 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...AN UPPER LEVEL TROUGH WILL MOVE ACROSS THE AREA TONIGHT. MOISTURE WILL INCREASE THIS AFTERNOON AHEAD OF THE TROUGH WITH A CHANCE FOR SNOW. THE SNOW WILL INCREASE THIS EVENING AND CONTINUE THURSDAY MORNING AS THE TROUGH MOVES OVERHEAD. BY THURSDAY AFTERNOON...THE TROUGH WILL PUSH SOUTHEAST WITH SNOW DECREASING. TRANSPORT WINDS ARE EXPECTED TO INCREASE THURSDAY...WITH DECENT SMOKE DISPERSION BY LATE MORNING. NOTE: TEMPERATURES...HUMIDITY AND WIND FOR TODAY HAVE BEEN ADJUSTED BASED ON CURRENT OBSERVATIONS AND ARE NOT REFLECTED IN THE TABLE BELOW. ...THUNDERSTORMS IMPLY STRONG...GUSTY AND ERRATIC WINDS... .TODAY... SKY/WEATHER.........CLOUDY. CHANCE OF SNOW UNTIL 1700...THEN OCCASIONAL SNOW. MAX TEMPERATURE.....41-45. MIN HUMIDITY........37-40%. 20-FOOT WINDS.......EAST WINDS 5-10 MPH UNTIL 1500...THEN NORTHEAST AROUND 5 MPH. TRANSPORT WINDS.....NORTHWEST 4-12 MPH. MIXING HEIGHT.......3400-4400 FT AGL. SMOKE DISPERSAL.....POOR UNTIL 1400...THEN FAIR UNTIL 1600...THEN POOR. HAINES INDEX........2 VERY LOW. .TONIGHT... SKY/WEATHER.........CLOUDY. OCCASIONAL SNOW. SNOW ACCUMULATIONS AROUND 7 INCHES BY MORNING. MIN TEMPERATURE.....7-11. MAX HUMIDITY........90-100%. 20-FOOT WINDS.......NORTH WINDS 7-13 MPH. GUSTS UP TO 20 MPH EARLY IN THE MORNING. TRANSPORT WINDS.....NORTHEAST 9-20 MPH. MIXING HEIGHT.......2400-3400 FT AGL UNTIL 2400. BELOW 1000 FT AGL AFTER 0400. SMOKE DISPERSAL.....POOR. HAINES INDEX........2 VERY LOW. .THURSDAY... SKY/WEATHER.........MOSTLY CLOUDY. OCCASIONAL SNOW UNTIL 1100... THEN CHANCE OF SNOW. ADDITIONAL SNOW ACCUMULATIONS AROUND 3 INCHES...MAINLY IN THE MORNING. MAX TEMPERATURE.....12-16. MIN HUMIDITY........75-80%. 20-FOOT WINDS.......NORTHEAST WINDS 9-15 MPH. TRANSPORT WINDS.....NORTHEAST 20-24 MPH UNTIL 1200...THEN 5-16 MPH. MIXING HEIGHT.......3600-4600 FT AGL. SMOKE DISPERSAL.....POOR UNTIL 0800...THEN FAIR UNTIL 1000...THEN GOOD UNTIL 1300...THEN FAIR UNTIL 1400...THEN POOR. HAINES INDEX........2 VERY LOW. FIRE WEATHER TABLE FOR HALL RANCH PA4 U5 S3. +++ DATA IN THE FOLLOWING TABLE HAS BEEN SAMPLED DIRECTLY FROM THE FORECAST DATABASE. VALUES IN THE TABLE MAY VARY SLIGHTLY FROM INFORMATION IN THE NARRATIVE FORECAST. PLEASE PROVIDE FEEDBACK IF THE INFORMATION IN THIS TABLE HAS BEEN REPRESENTATIVE AND/OR USEFUL. +++ FORECAST SC PP WR AT 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 12/21-11 91 39 17 32 59 SW 2 2 2 1 W26 2812 W10 25049 P 12/21-12 91 39 17 34 55 W 2 2 2 1 W25 3485 W10 31930 P 12/21-13 91 39 17 35 50 N 2 2 2 1 W25 4159 W10 38810 P 12/21-14 91 39 17 36 48 NE 3 3 2 1 W25 4833 W10 45691 F 12/21-15 91 39 17 35 48 NE 3 3 2 1 SW28 4639 NW 9 35956 P 12/21-16 91 39 17 33 51 NE 5 5 2 1 SW30 4446 N 7 26222 P 12/21-17 98 93 89 27 66 NE 5 5 2 1 SW32 4252 N 5 16487 P 12/21-18 98 93 89 24 73 NE 6 6 2 1 SW35 3695 NE 6 16220 P 12/21-19 98 93 89 21 79 NE 6 6 2 1 SW36 3139 NE 6 15953 P 12/21-20 98 93 89 20 84 NE 7 7 2 1 SW36 2582 NE 7 15687 P 12/21-21 98 93 89 19 88 NE 8 13 2 1 SW32 2487 NE10 22772 P 12/21-22 98 93 89 17 93 N 8 14 2 1 SW28 2393 N15 29857 P 12/21-23 100 99 98 16 96 N 9 15 2 1 S22 2299 N18 36942 P 12/22-00 100 99 98 15 100 N 9 15 2 1 S17 1872 N18 29757 P 12/22-01 100 99 98 13 100 N10 16 2 1 S14 1444 N17 22571 P 12/22-02 100 99 98 12 100 N10 16 2 1 S12 1017 NE17 15385 P 12/22-03 100 99 98 11 100 N10 17 2 1 SE12 945 NE18 15163 P 12/22-04 100 99 98 10 100 N12 17 2 1 E14 872 NE20 14942 P 12/22-05 100 87 79 11 100 N12 18 2 1 E16 800 NE21 14721 P 12/22-06 100 87 79 10 100 N12 20 2 1 E18 1285 NE23 26597 P 12/22-07 100 87 79 9 100 N13 20 2 1 E21 1770 NE24 38472 P 12/22-08 100 87 79 10 100 N13 21 2 1 E23 2256 NE25 50348 F 12/22-09 100 87 79 12 98 N12 18 2 1 E22 2513 NE24 48869 F 12/22-10 100 87 79 13 89 N10 17 2 1 E23 3447 NE22 62872 G 12/22-11 90 40 18 15 82 NE 9 15 2 1 E22 4382 NE21 76875 G 12/22-12 90 40 18 16 77 NE 8 14 2 1 E20 4475 NE17 64955 G 12/22-13 90 40 18 16 76 NE 8 13 2 1 E16 4569 NE14 53035 F 12/22-14 90 40 18 16 76 NE 7 7 2 1 E13 4663 NE10 41115 F 12/22-15 90 40 18 16 75 NE 6 6 2 1 E 9 4290 NE 9 33458 P 12/22-16 90 40 18 16 77 NE 5 5 2 1 NE 6 3918 NE 7 25800 P 12/22-17 67 9 2 12 86 NE 3 3 2 1 NE 3 3545 NE 6 18143 P 12/22-18 67 9 2 11 87 N 2 2 2 1 NE 3 2984 N 5 12800 P 12/22-19 67 9 2 10 85 NW 2 2 2 1 N 3 2422 NW 2 7456 P 12/22-20 67 9 2 9 82 NW 2 2 2 1 N 5 1861 CALM 2113 P 12/22-21 67 9 2 8 77 W 2 2 2 1 N 5 1390 W 2 1896 P 12/22-22 67 9 2 7 74 W 3 3 3 1 N 6 919 W 3 1678 P 12/22-23 22 1 0 7 71 SW 5 5 3 1 N 6 448 SW 3 1461 P 12/23-00 22 1 0 6 69 W 5 5 3 1 N 7 370 W 5 1364 P 12/23-01 22 1 0 5 68 W 6 6 3 1 N 8 293 W 6 1266 P 12/23-02 22 1 0 5 68 W 6 6 3 1 N 9 215 W 6 1169 P 12/23-03 22 1 0 4 68 W 6 6 3 1 N12 188 W 7 1071 P 12/23-04 22 1 0 4 69 W 7 7 2 1 N13 161 W 7 972 P 12/23-05 11 0 0 3 72 W 7 7 2 1 N16 133 W 8 874 P 12/23-06 11 0 0 3 76 W 7 7 2 1 N20 142 W 8 988 P 12/23-07 11 0 0 4 79 W 8 13 2 1 N23 151 W 8 1102 P 12/23-08 11 0 0 6 76 W 8 13 2 1 N26 159 W 9 1217 P 12/23-09 11 0 0 12 63 W 8 14 2 1 N29 1171 W 9 11013 P 12/23-10 11 0 0 18 53 W 8 14 3 1 N31 2183 NW10 20810 P 12/23-11 12 3 1 23 45 W 8 13 3 1 NE32 3196 NW12 30606 P 12/23-12 12 3 1 26 38 W 7 7 3 1 NE35 3586 NW13 39003 P 12/23-13 12 3 1 27 36 W 6 6 3 1 NE37 3977 N14 47399 F 12/23-14 12 3 1 27 35 W 6 6 3 1 N38 4367 N15 55796 F 12/23-15 12 3 1 27 33 W 7 7 3 1 N39 3407 N14 42128 F 12/23-16 12 3 1 27 31 W 8 13 2 1 N39 2447 NW13 28460 P 12/23-17 19 3 1 24 33 W 9 15 2 1 N38 1488 NW12 14793 P 12/23-18 19 3 1 23 35 W 9 15 2 1 N38 1193 NW10 11382 P 12/23-19 19 3 1 21 37 W 9 15 2 1 N38 898 NW 9 7972 P 12/23-20 19 3 1 20 38 W 8 14 2 1 N37 603 NW 9 4562 P 12/23-21 19 3 1 19 38 W 8 13 2 1 N35 504 NW 8 3505 P 12/23-22 19 3 1 19 39 W 7 7 2 1 N32 404 W 7 2448 P 12/23-23 15 3 1 18 39 W 7 7 2 1 N30 304 W 6 1391 P 12/24-00 15 3 1 17 38 W 7 7 2 1 N29 269 W 6 1340 P 12/24-01 15 3 1 16 37 W 8 13 2 1 N26 234 W 7 1288 P 12/24-02 15 3 1 16 36 W 9 14 2 1 N25 198 W 7 1237 P 12/24-03 15 3 1 15 36 W 9 15 2 1 N24 185 W 8 1205 P 12/24-04 15 3 1 14 36 W10 16 2 1 N23 172 W 8 1174 P 12/24-05 10 4 1 14 37 W10 16 2 1 N21 158 W 8 1142 P 12/24-06 10 4 1 14 41 W10 16 1 12/24-07 10 4 1 14 46 W 9 15 1 12/24-08 10 4 1 16 48 W 8 13 1 12/24-09 10 4 1 21 44 W 7 7 1 12/24-10 10 4 1 26 42 W 7 7 1 12/24-11 18 4 1 30 38 W 6 6 1 12/24-12 18 4 1 33 35 W 6 6 1 12/24-13 18 4 1 34 33 W 6 6 1 12/24-14 18 4 1 34 33 W 7 7 1 12/24-15 18 4 1 34 32 W 7 7 1 12/24-16 18 4 1 34 32 W 8 8 1 12/24-17 19 5 1 30 36 W 8 13 1 KEY: FORECAST - MONTH/DAY-HOUR OF FORECAST /24-HOUR CLOCK LOCAL TIME/ VALID AT SC - SKY COVER /PERCENT/ PP - PROBABILITY OF PRECIPITATION 0.01 INCH /PERCENT/ WR - PROBABILITY OF WETTING RAIN 0.1 INCH /PERCENT/ AT - 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...LESZCYNSKI...WFO BOULDER REQUESTED BY...JAY STALNACKER REASON FOR REQUEST...PRESCRIBED .TAG 20111222.HALLR.01/BOU