FNUS75 KBOU 011843 FWSBOU SPOT FORECAST FOR HALL RANCH...BOULDER COUNTY NATIONAL WEATHER SERVICE DENVER CO 1130 AM MST WED FEB 1 2012 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...A WINTER STORM WILL BE APPROACHING ON THURSDAY WITH LOWERING CLOUDS AND NORTHEAST WINDS DEVELOPING DURING THE DAY. SNOW IS EXPECTED TO START VERY LATE IN THE AFTERNOON OR IN THE EARLY EVENING...THOUGH THERE IS A SLIGHT CHANCE OF LIGHT SNOW DURING THE AFTERNOON HOURS. HEAVY SNOW IS POSSIBLE THURSDAY NIGHT INTO FRIDAY. THERE IS STILL FAIR UNCERTAINTY ABOUT SNOW AMOUNTS WITH THIS STORM... BUT THE BEST ESTIMATE FOR THE BURN SITE IS A TOTAL OF BETWEEN 6 AND 12 INCHES BY NOON FRIDAY. WITH THE CLOUD COVER AND A COOL NORTHEAST WIND...MIXING DEPTH AND SMOKE DISPERSAL WILL BE LIMITED. MARGINALLY FAIR DISPERSAL IS EXPECTED IN THE AFTERNOON. ...THUNDERSTORMS IMPLY STRONG...GUSTY AND ERRATIC WINDS... .THURSDAY... SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SNOW FROM 1100 UNTIL 1400...THEN LIGHT SNOW LIKELY. MAX TEMPERATURE.....40-44. MIN HUMIDITY........30-35%. 20-FOOT WINDS.......NORTHWEST WINDS 4-7 MPH UNTIL 0900...THEN NORTH 4-10 MPH UNTIL 1200...THEN NORTHEAST 6-12 MPH. TRANSPORT WINDS.....NORTH 4-8 MPH UNTIL 1200...THEN NORTHEAST 12-20 MPH. MIXING HEIGHT.......BELOW 1000 FT AGL UNTIL 0900...THEN RISING TO 4000 FT AGL BY 1300. SMOKE DISPERSAL.....POOR UNTIL 1200...THEN FAIR. HAINES INDEX........3 VERY LOW. .FORECAST DAYS 3 THROUGH 5... .FRIDAY...SNOW LIKELY UNTIL 1800...THEN CHANCE OF SNOW. COLDER. LOWS AROUND 19. HIGHS AROUND 30. NORTH WINDS AROUND 15 MPH WITH GUSTS TO 30 MPH. .SATURDAY...PARTLY CLOUDY. SLIGHT CHANCE OF SNOW UNTIL 0600... THEN SLIGHT CHANCE OF SNOW SHOWERS. LOWS AROUND 17. HIGHS AROUND 30. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. .SUNDAY...MOSTLY CLEAR. LOWS AROUND 17. HIGHS IN THE MID 30S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. FIRE WEATHER TABLE FOR HALL RANCH. +++ 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 02/01-11 60 0 0 41 20 SW 9 14 5 1 NW21 4517 W 7 26143 P 02/01-12 60 0 0 43 19 SW 8 8 5 1 NW20 4852 W 8 34475 P 02/01-13 69 0 0 44 19 SW 9 9 5 1 W21 5187 W 9 42806 F 02/01-14 69 0 0 45 19 SW 9 14 5 1 W21 5523 W10 51137 F 02/01-15 70 0 0 46 19 SW 8 8 5 1 W21 4797 W13 50985 F 02/01-16 70 0 0 44 21 SW 8 8 4 1 W22 4072 W15 50832 F 02/01-17 58 0 0 39 25 W 8 8 4 1 W23 3347 W17 50680 F 02/01-18 58 0 0 34 31 W 9 15 4 1 W25 2488 W16 36556 P 02/01-19 58 0 0 33 33 W12 17 5 1 W29 1629 W14 22432 P 02/01-20 58 0 0 32 35 W13 20 5 1 SW31 771 W13 8308 P 02/01-21 58 0 0 32 35 W12 17 4 1 SW31 672 W10 6521 P 02/01-22 58 0 0 32 35 W10 15 4 1 W31 574 W 9 4733 P 02/01-23 69 0 0 31 37 W 8 8 3 1 W29 475 W 7 2946 P 02/02-00 69 0 0 32 36 W 7 7 3 1 SW28 523 W 6 2633 P 02/02-01 69 0 0 32 36 NW 6 6 3 1 SW25 571 NW 5 2319 P 02/02-02 69 0 0 32 35 NW 6 6 3 1 SW22 618 NW 3 2006 P 02/02-03 69 0 0 33 33 NW 7 7 3 1 SW18 898 NW 3 2870 P 02/02-04 69 0 0 33 32 W 8 8 3 1 SW15 1178 NW 3 3735 P 02/02-05 74 30 9 34 31 W 8 8 3 1 SW12 1457 NW 3 4599 P 02/02-06 74 30 9 31 37 NW 6 6 3 1 S12 1090 NW 3 3444 P 02/02-07 74 30 9 28 44 N 5 5 3 1 S12 724 N 3 2289 P 02/02-08 74 30 9 29 43 N 3 3 3 1 S12 357 N 3 1134 P 02/02-09 64 30 9 34 37 N 2 2 3 1 SE12 1802 N 6 13171 P 02/02-10 64 30 9 36 35 NE 2 2 3 1 SE12 3247 NE 7 25208 P 02/02-11 64 60 38 38 33 NE 2 2 3 1 SE10 4693 NE 9 37245 P 02/02-12 64 60 38 40 31 NE 3 3 3 1 SE 8 5056 NE10 46867 F 02/02-13 78 60 38 41 30 NE 5 5 3 1 SE 6 5419 NE12 56489 F 02/02-14 78 60 38 41 30 E 7 7 3 1 SE 3 5782 NE13 66110 G 02/02-15 78 60 38 42 31 NE 8 8 3 1 SE 2 5274 NE15 67272 G 02/02-16 78 60 38 39 36 NE10 15 2 1 NE 3 4766 NE17 68433 G 02/02-17 100 70 53 33 50 NE12 17 2 1 NE 5 4259 NE18 69595 G 02/02-18 100 70 53 27 67 NE14 21 2 1 NE 7 3208 NE20 53288 F 02/02-19 100 70 53 26 75 N16 25 2 1 NE 9 2157 N21 36982 P 02/02-20 100 70 53 25 80 N18 28 2 1 NE12 1107 N22 20676 P 02/02-21 100 70 53 25 78 N18 29 2 1 NE13 1163 N22 22359 P 02/02-22 100 70 53 25 77 N18 28 2 1 NE14 1218 N23 24043 P 02/02-23 100 70 53 23 77 N18 28 2 1 NE14 1274 N23 25727 P 02/03-00 100 70 53 24 72 N18 28 2 1 E13 1316 N24 27306 P 02/03-01 100 70 53 24 69 N20 29 2 1 E12 1357 N24 28885 P 02/03-02 100 70 53 24 69 N20 30 2 1 E12 1399 N25 30464 P 02/03-03 100 70 53 25 71 N20 30 2 1 E10 1869 N25 41532 F 02/03-04 100 70 53 28 65 N20 30 2 1 NE10 2338 N25 52600 F 02/03-05 100 70 53 27 73 N20 30 2 1 NE10 2808 N26 63667 G 02/03-06 100 70 53 24 89 N20 30 2 1 NE 9 2203 N25 49008 F 02/03-07 100 70 53 20 100 N20 30 2 1 NE 8 1597 N24 34349 P 02/03-08 100 70 53 21 100 N20 30 2 1 NE 7 992 N23 19690 P 02/03-09 100 70 53 24 85 N18 29 2 1 E 6 1900 N21 29100 P 02/03-10 100 70 53 26 74 N18 28 2 1 E 5 2808 NE17 38511 P 02/03-11 100 70 53 27 66 N17 26 2 1 E 3 3716 NE15 47921 F 02/03-12 100 70 53 28 62 N16 25 2 1 NE 3 4121 NE14 48244 F 02/03-13 100 70 53 29 61 N16 24 2 1 NW 3 4526 NE13 48568 F 02/03-14 100 70 53 29 60 N15 23 2 1 W 3 4931 NE12 48892 F 02/03-15 100 70 53 30 58 N14 21 2 1 W 3 4518 NE10 40832 F 02/03-16 100 70 53 28 59 N13 20 2 1 NW 3 4106 NE 9 32771 P 02/03-17 78 40 18 25 68 N12 17 2 1 NW 2 3693 NE 8 24711 P 02/03-18 78 40 18 21 82 N10 15 2 1 N 2 2928 NE 7 19218 P 02/03-19 78 40 18 20 91 N 8 8 2 1 NE 2 2163 NE 7 13725 P 02/03-20 78 40 18 20 97 N 7 7 2 1 E 3 1398 NE 7 8231 P 02/03-21 78 40 18 20 93 N 6 6 2 1 E 7 1247 NE 6 6968 P 02/03-22 78 40 18 20 90 N 6 6 2 1 SE 9 1096 N 6 5704 P 02/03-23 59 20 4 19 89 N 6 6 2 1 SE12 945 N 6 4440 P 02/04-00 59 20 4 20 87 N 6 6 2 1 SE13 1112 N 5 4682 P 02/04-01 59 20 4 20 89 NW 6 6 2 1 SE13 1279 NE 5 4924 P 02/04-02 59 20 4 20 90 NW 6 6 2 1 S12 1446 NE 5 5166 P 02/04-03 59 20 4 20 89 NW 5 5 2 1 S10 1873 NE 5 7267 P 02/04-04 59 20 4 22 80 NW 5 5 2 1 S10 2301 NE 5 9368 P 02/04-05 52 22 4 22 80 NW 3 3 2 1 S 9 2728 NE 5 11469 P 02/04-06 52 22 4 19 85 NW 3 3 1 02/04-07 52 22 4 17 90 N 3 3 1 02/04-08 52 22 4 18 82 N 3 3 1 02/04-09 52 22 4 23 64 N 3 3 1 02/04-10 52 22 4 25 57 N 3 3 1 02/04-11 55 18 4 27 51 N 3 3 1 02/04-12 55 18 4 29 47 NE 3 3 1 02/04-13 55 18 4 29 47 NE 3 3 1 02/04-14 55 18 4 30 47 NE 2 2 1 02/04-15 55 18 4 30 46 NE 2 2 1 02/04-16 55 18 4 29 50 NE 2 2 1 02/04-17 42 12 2 25 60 NE 2 2 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...GIMMESTAD REQUESTED BY...JAY STALNACKER REASON FOR REQUEST...PRESCRIBED .TAG 20120202.HALLR.01/BOU