FNUS75 KBOU 271534 FWSBOU SPOT FORECAST FOR HALL RANCH...COUNTY NATIONAL WEATHER SERVICE DENVER/BOULDER CO 925 AM MDT SAT APR 27 2013 FORECAST IS BASED ON IGNITION TIME OF 0930 MDT ON APRIL 27. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...IT'LL BE DRY AND WARMER TODAY WITH A WEAK UPPER LEVEL HIGH PRESSURE RIDGE PASSES OVERHEAD. STRONG DAYTIME HEATING WILL PRODUCE A WELL MIXED LOWER ATMOSPHERE WHICH WILL ALLOW SOMEWHAT STRONG NORTHWEST FLOW ALOFT TO MIX DOWN TO THE GROUND THIS AFTERNOON. THIS WILL MOST LIKELY OCCUR IN AREAS UP ALONG THE WYOMING BORDER AND ACROSS THE NORTHEAST CORNER OF THE STATE. HOWEVER... FOOTHILLS AREAS GENERALLY NORTH OF I-70 COULD SEE THESE GUSTY WEST- NORTHWESTERLY WINDS AT TIMES THIS AFTERNOON. THERE IS NO CHANCE OF PRECIPITATION TODAY...AND LITTLE CHANCE OF CLOUD COVER...AT LEAST FROM THE FOOTHILLS EASTWARD. WINDS SHOULD DIE DOWN AROUND DARK...WITH THE USUAL DRAINAGE WIND PATTERN OVERNIGHT. ON SUNDAY...THE DAY SHOULD START OUT PRETTY MUCH LIKE TODAY. LATER IN THE DAY...HOWEVER...LOOK FOR CUMULUS CLOUDS TO BEGIN FORMING OVER THE HIGH TERRAIN AS WESTERLY WINDS BECOME A BIT GUSTY IN THE AFTERNOON IN ADVANCE OF A WEAK UPPER LEVEL WEATHER DISTURBANCE DROPPING DOWN OUT OF SOUTHWEST WYOMING. ...THUNDERSTORMS IMPLY STRONG...GUSTY AND ERRATIC WINDS... .TODAY... SKY/WEATHER.........SUNNY. MAX TEMPERATURE.....AROUND 66. MIN HUMIDITY........18-23%. WIND (20 FT)........NORTHWEST WINDS 7-13 MPH WITH GUSTS TO 17 MPH UNTIL 1700...THEN UPSLOPE/UPVALLEY 5-10 MPH ON THE SHELTERED VALLEY FLOORS...BUT WEST-NORTHWEST 12-20 MPH WITH HIGHER GUSTS TO AROUND 28 MPH ON THE EXPOSED RIDGETOPS. MIXING HEIGHT.......UP AROUND 6500 FT AGL UNTIL 1100...THEN 9200-10200 FT AGL UNTIL 1200...THEN 12300-13300 FT AGL UNTIL 1700...THEN 10800 FT AGL. TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH UNTIL 1200...THEN 15-20 MPH. SMOKE DISPERSAL.....GOOD AFTER 1000. HAINES INDEX........3 VERY LOW. CWR.................0 PERCENT. .TONIGHT... SKY/WEATHER.........MOSTLY CLEAR. MIN TEMPERATURE.....AROUND 37. MAX HUMIDITY........61%. WIND (20 FT)........DOWNSLOPE/DOWNVALLEY 2-8 MPH UNTIL 2100...THEN WEST 11-15 MPH WITH GUSTS TO 25 MPH. MIXING HEIGHT.......9400 FT AGL UNTIL 1900. BELOW 1000 FT AGL AFTER 2400. TRANSPORT WINDS.....WEST AROUND 10 MPH. SMOKE DISPERSAL.....GOOD UNTIL 1900. POOR AFTER 2000. HAINES INDEX........3 VERY LOW. CWR.................0 PERCENT. .SUNDAY... SKY/WEATHER.........MOSTLY SUNNY. MAX TEMPERATURE.....AROUND 68. MIN HUMIDITY........23%. WIND (20 FT)........WEST WINDS 8-11 MPH UNTIL 0900...THEN UPSLOPE/UPVALLEY 4-10 MPH. MIXING HEIGHT.......BELOW 1000 FT AGL UNTIL 0700. 12300-13300 FT AGL AFTER 1100. TRANSPORT WINDS.....WEST AROUND 10 MPH. SMOKE DISPERSAL.....POOR UNTIL 0800. VERY GOOD AFTER 1200. HAINES INDEX........3 VERY LOW. CWR.................0 PERCENT. .FORECAST DAYS 3 THROUGH 5... .MONDAY...MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE LOWER 70S. WEST WINDS 8-11 MPH. .TUESDAY...PARTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS IN THE UPPER 60S. WEST WINDS 8-11 MPH. .WEDNESDAY...COOLER. PARTLY CLOUDY. CHANCE OF RAIN AND SNOW SHOWERS. LOWS IN THE LOWER 30S. HIGHS IN THE LOWER 50S. 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. FEEDBACK WELCOME. +++ FORECAST SC PP WR AT RH 20-FT G H L 10KFT MIXG TRANS VENTL AJTV VALID AT % % % F % WIND S I A WIND HGT WIND RATE RATNG MPH T L MPH AGL MPH KT-FT 04/27-09 0 0 0 51 36 W 20 31 2 1 NNW 15 8667 NW 12 89160 G 04/27-10 0 0 0 55 30 WNW 20 31 1 NNW 14 9692 NW 10 86808 G 04/27-11 0 0 0 59 25 WNW 20 31 1 NNW 14 10717 NW 9 84456 G 04/27-12 10 0 0 62 21 NW 15 24 2 1 NNW 14 11742 NW 8 82103 G 04/27-13 10 0 0 64 20 NW 13 13 1 NNW 14 12381 NW 8 80472 G 04/27-14 10 0 0 66 19 NW 13 13 1 NNW 14 13019 NW 7 78841 G 04/27-15 12 0 0 66 19 ENE 7 7 2 1 NNW 15 13658 NW 7 77210 G 04/27-16 12 0 0 65 20 E 5 5 1 NW 16 12240 WNW 7 72718 G 04/27-17 12 0 0 63 21 SE 3 3 1 NW 18 10822 WNW 7 68227 G 04/27-18 17 0 0 60 24 SSE 3 3 3 1 NW 20 9403 WNW 8 63735 G 04/27-19 17 0 0 56 28 S 7 7 1 NW 21 7256 WNW 8 48568 F 04/27-20 17 0 0 52 33 WSW 10 10 1 NW 21 5109 WNW 7 33402 P 04/27-21 17 0 0 49 37 W 13 13 2 1 NW 21 2962 WNW 7 18235 P 04/27-22 9 0 0 46 42 W 14 23 1 NW 21 2113 WNW 8 13383 P 04/27-23 9 0 0 44 45 W 15 24 1 NW 20 1264 W 9 8532 P 04/28-00 9 0 0 43 47 W 15 25 3 1 NW 18 414 W 10 3680 P 04/28-01 9 0 0 42 49 W 16 25 1 NW 17 378 W 10 3464 P 04/28-02 15 0 0 41 52 W 16 26 1 NW 17 341 W 12 3247 P 04/28-03 15 0 0 39 57 W 16 25 3 1 NW 17 305 W 12 3031 P 04/28-04 15 0 0 38 59 W 15 24 1 NW 17 303 W 12 2971 P 04/28-05 15 0 0 37 61 W 15 23 1 NNW 18 301 W 12 2911 P 04/28-06 11 0 0 38 59 W 13 13 3 1 NNW 18 299 W 12 2851 P 04/28-07 11 0 0 42 52 W 12 12 1 NW 17 2752 W 9 18216 P 04/28-08 11 0 0 47 45 W 9 9 1 NW 17 5205 WNW 8 33582 P 04/28-09 11 0 0 53 38 W 7 7 2 1 NW 16 7658 WNW 7 48948 F 04/28-10 11 0 0 58 32 WSW 5 5 2 1 NW 16 9087 WNW 7 54000 F 04/28-11 11 0 0 62 28 SW 3 3 2 1 WNW 16 10516 WNW 7 59053 F 04/28-12 15 3 1 65 25 SSW 2 2 3 1 WNW 16 11546 W 9 94100 G 04/28-13 15 3 1 67 23 SSW 2 2 2 1 WNW 18 12674 W 7 79547 G 04/28-14 15 3 1 68 23 SSW 2 2 3 1 WNW 20 13404 W 8 94989 G 04/28-15 25 3 1 68 23 SSW 3 3 3 1 WNW 22 14133 W 9110431 V 04/28-16 25 3 1 67 24 SW 3 3 3 1 WNW 23 13052 W 10111696 V 04/28-17 25 3 1 66 25 SW 3 3 3 1 WNW 24 11972 W 12112961 V 04/28-18 50 9 2 64 27 WSW 5 5 3 1 WNW 23 11298 W 13123408 V 04/28-19 50 9 2 61 31 WSW 7 7 3 1 WNW 23 7736 W 13 81886 G 04/28-20 50 9 2 58 36 W 9 14 4 1 WNW 21 4582 W 14 49547 F 04/28-21 50 9 2 55 41 W 10 16 4 1 WNW 18 1427 W 14 17208 P 04/28-22 50 9 2 52 47 W 10 17 4 1 WNW 16 1064 W 14 12831 P 04/28-23 50 9 2 51 48 W 10 17 5 1 WNW 14 701 W 14 8454 P 04/29-00 16 0 0 49 52 W 10 16 3 1 W 24 1240 W 12 12198 P 04/29-01 16 0 0 48 53 W 10 17 4 1 WNW 14 309 W 14 3598 P 04/29-02 16 0 0 48 53 W 12 18 4 1 WNW 16 280 W 13 3119 P 04/29-03 16 0 0 47 54 W 12 18 3 1 W 17 252 W 12 2641 P 04/29-04 16 0 0 46 54 W 12 18 3 1 WNW 20 252 W 12 2626 P 04/29-05 16 0 0 45 54 W 12 17 3 1 WNW 21 252 W 12 2611 P 04/29-06 11 0 0 46 51 W 10 16 2 1 WNW 38 1181 WSW 10 10571 P 04/29-07 11 0 0 49 47 W 9 14 3 1 WNW 23 905 W 12 8467 P 04/29-08 11 0 0 53 42 W 7 7 3 1 W 23 1558 W 12 14338 P 04/29-09 11 0 0 58 36 WSW 6 6 3 1 W 24 2212 W 10 20209 P 04/29-10 11 0 0 62 31 WSW 6 6 3 1 W 26 5469 W 14 89453 G 04/29-11 11 0 0 66 26 WSW 7 7 3 1 WNW 29 8727 W 18158697 E 04/29-12 15 0 0 69 23 W 8 13 3 1 NW 21 12917 WNW 16176630 E 04/29-13 15 0 0 71 22 W 9 14 3 1 W 31 12898 W 22243125 E 04/29-14 15 0 0 72 21 W 9 15 3 1 W 32 13811 W 22258309 E 04/29-15 15 0 0 72 21 W 10 16 3 1 W 32 14724 W 22273494 E 04/29-16 15 0 0 72 21 W 12 18 3 1 W 32 12959 W 23250723 E 04/29-17 15 0 0 70 22 W 13 20 3 1 W 32 11193 W 24227952 E 04/29-18 28 0 0 68 24 W 13 21 3 1 W 31 9641 W 26218868 E 04/29-19 28 0 0 66 26 W 13 20 1 04/29-20 28 0 0 63 29 W 12 18 1 04/29-21 28 0 0 60 33 W 10 16 1 04/29-22 28 0 0 58 36 W 10 16 1 04/29-23 28 0 0 56 40 WSW 9 15 1 04/30-00 31 0 0 55 41 WSW 9 15 2 1 W 44 2483 WSW 17 36878 P 04/30-01 31 0 0 54 43 WSW 9 15 1 04/30-02 31 0 0 53 44 W 9 15 1 04/30-03 31 0 0 52 44 W 9 15 1 04/30-04 31 0 0 50 46 W 9 15 1 04/30-05 31 0 0 49 47 W 9 15 1 04/30-06 46 12 2 49 46 W 9 15 2 1 W 55 1116 WSW 12 11607 P KEY: FORECAST - MONTH/DAY-HOUR OF FORECAST VALID AT - /24-HOUR CLOCK LOCAL TIME/ SC - SKY COVER /PERCENT/ PP - PROBABILITY OF PRECIPITATION 0.01 INCH /PERCENT/ WR - PROBABILITY OF WETTING RAIN 0.10 INCH /PERCENT/ AT - TEMPERATURE /DEGREES F/ RH - RELATIVE HUMIDITY /PERCENT/ 20-FT WIND - 20-FOOT WIND /MPH/ GST - 20-FOOT WIND GUST /MPH/ HI - HAINES INDEX LAL - LIGHTNING ACTIVITY LEVEL 10KFT WIND - 10000 FEET ABOVE GROUND LEVEL FREE-AIR WINDS /MPH/ MIXG HGT - MIXING HEIGHT /FEET ABOVE GROUND LEVEL/ TRANS 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...BAKER REQUESTED BY...JAY STALNACKER TYPE OF REQUEST...PRESCRIBED .TAG 20130427.HALLR.01/BOU