FNUS75 KBOU 031136 FWSBOU SPOT FORECAST FOR COW CREEK...NPS NATIONAL WEATHER SERVICE DENVER CO 527 AM MDT FRI SEP 3 2010 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...A RIDGE OF HIGH PRESSURE WILL BUILD ACROSS THE DESERT SOUTHWEST THROUGH TONIGHT...BRINGING LIGHTER NORTHWEST FLOW ALOFT AND WARMER TEMPERATURES TO THE BURN SITE. MAINLY DIURNAL WIND PATTERNS SHOULD PREVAIL...ALTHOUGH A FEW BREEZES FROM THE WEST ARE POSSIBLE DURING THE AFTERNOON. FIRE DANGER WILL INCREASE SATURDAY AS WINDS STRENGTHEN. EVEN HIGHER FIRE DANGER IS THEN EXPECTED SUNDAY INTO MONDAY AS WINDS CONTINUE TO INCREASE. MUCH ABOVE NORMAL TEMPERATURES AND VERY LOW HUMIDITIES CAN BE EXPECTED SUNDAY...BEFORE COOLING BY MONDAY. ...THUNDERSTORMS IMPLY STRONG...GUSTY AND ERRATIC WINDS... .TODAY... SKY/WEATHER.........SUNNY. MAX TEMPERATURE.....65-68. MIN HUMIDITY........18-20%. 20-FOOT WINDS.......WEST WINDS 6-12 MPH UNTIL 1000...THEN UPSLOPE/UPVALLEY 4-10 MPH UNTIL 1500...THEN SOUTHWEST 6-10 MPH. TRANSPORT WINDS.....WEST 12-16 MPH. MIXING HEIGHT.......LESS THAN 2000 FT AGL UNTIL 1000...THEN INCREASING TO 8600-9600 FT AGL BY 1400. SMOKE DISPERSAL.....POOR UNTIL 1000...THEN BECOMING GOOD BY 1200...THEN VERY GOOD AFTER 1400. HAINES INDEX........4 LOW. .TONIGHT... SKY/WEATHER.........CLEAR. MIN TEMPERATURE.....47. MAX HUMIDITY........41%. 20-FOOT WINDS.......WEST WINDS 6-12 MPH UNTIL 2400...THEN WEST 12-18 MPH. TRANSPORT WINDS.....WEST 12-16 MPH. MIXING HEIGHT.......9600 FT AGL UNTIL 1900. SMOKE DISPERSAL.....VERY GOOD UNTIL 1900...THEN BECOMING POOR AFTER 2100. HAINES INDEX........5 MODERATE. .SATURDAY... SKY/WEATHER.........SUNNY UNTIL 1200...THEN PARTLY CLOUDY(30-40%). MAX TEMPERATURE.....66-69. MIN HUMIDITY........19-22%. 20-FOOT WINDS.......WEST WINDS 14-24 MPH WITH GUSTS TO 32 MPH. TRANSPORT WINDS.....WEST 21-32 MPH. MIXING HEIGHT.......1000-2000 FT AGL UNTIL 0900...THEN INCREASING TO 8600-9600 FT AGL AFTER 1200. SMOKE DISPERSAL.....POOR UNTIL 0800...BECOMING EXCELLENT AFTER 1200. HAINES INDEX........5 MODERATE. .FORECAST DAYS 3 THROUGH 5... .SUNDAY...PARTLY CLOUDY. LOWS AROUND 40. HIGHS IN THE MID 70S. WEST WINDS AROUND 20 MPH WITH GUSTS TO 40 MPH. .LABOR DAY...PARTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS UNTIL 1200...THEN SLIGHT CHANCE OF THUNDERSTORMS. COOLER. LOWS IN THE UPPER 40S. HIGHS IN THE MID 60S. WEST WINDS AROUND 24 MPH WITH GUSTS TO 50 MPH. .TUESDAY...PARTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS AFTER 1200. LOWS IN THE MID 40S. HIGHS IN THE UPPER 50S. SOUTHWEST WINDS AROUND 11 MPH WITH GUSTS TO 25 MPH. EXPERIMENTAL FIRE WEATHER TABLE FOR COW CREEK. +++ 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 09/03-05 2 0 37 56 W 8 1 419 W 8 2744 P 09/03-06 2 0 37 55 W 8 8 4 1 NW33 244 W 8 1618 P 09/03-07 3 0 39 50 W 9 1 469 W 8 3110 P 09/03-08 3 0 42 46 W 10 1 694 W 8 4601 P 09/03-09 3 0 45 42 W 12 17 4 1 NW29 920 W 8 6093 P 09/03-10 3 0 50 35 W 10 1 2550 W 10 30546 P 09/03-11 3 0 54 30 S 8 1 4181 W 13 55000 F 09/03-12 3 0 58 26 SE 7 7 3 1 NW24 5812 W 16 79453 G 09/03-13 9 0 61 23 S 6 1 7026 W 16 96271 G 09/03-14 9 0 63 21 S 6 1 8240 W 16 113089 V 09/03-15 9 0 64 21 S 7 7 3 1 NW23 9455 W 16 129908 V 09/03-16 9 0 65 20 SW 8 1 9518 W 16 133988 V 09/03-17 9 0 65 20 W 9 1 9582 W 16 138069 V 09/03-18 9 0 64 21 W 9 14 3 1 NW28 9645 W 17 142149 V 09/03-19 9 0 62 23 W 8 1 7583 W 15 107173 V 09/03-20 1 0 59 26 W 8 1 5521 W 14 72197 G 09/03-21 1 0 56 29 W 7 7 4 1 NW31 3459 W 13 37221 P 09/03-22 1 0 54 32 W 7 1 2443 W 12 25977 P 09/03-23 1 0 53 33 W 7 1 1427 W 10 14734 P 09/04-00 1 0 51 35 W 8 8 5 1 NW28 411 W 10 3491 P 09/04-01 1 0 50 36 W 9 1 346 W 10 3048 P 09/04-02 1 0 49 38 W 10 1 281 W 10 2604 P 09/04-03 1 0 49 39 W 13 20 5 1 NW30 217 W 12 2161 P 09/04-04 1 0 48 40 W 15 1 210 W 13 2392 P 09/04-05 1 0 47 41 W 16 1 204 W 15 2624 P 09/04-06 4 0 48 40 W 18 28 4 1 NW30 197 W 17 2855 P 09/04-07 4 0 49 38 W 21 1 757 W 21 18455 P 09/04-08 4 0 50 35 W 21 1 1316 W 25 34054 P 09/04-09 4 0 54 30 W 21 32 5 1 NW28 1876 W 30 49653 F 09/04-10 4 0 58 26 W 20 1 4405 W 31 120503 V 09/04-11 4 0 61 25 W 17 1 5962 W 31 163748 E 09/04-12 33 0 62 24 W 16 25 5 1 NW28 7520 NW 32 206992 E 09/04-13 33 0 63 24 W 16 1 8245 NW 31 220259 E 09/04-14 33 0 64 23 W 16 1 8970 NW 30 233526 E 09/04-15 33 0 64 23 W 16 25 3 1 W31 9695 NW 29 246793 E 09/04-16 33 0 64 24 W 16 1 9652 NW 29 239507 E 09/04-17 33 0 63 25 W 16 1 9608 W 28 232221 E 09/04-18 33 0 63 26 W 16 25 3 1 NW38 9565 W 28 224935 E 09/04-19 33 0 61 28 W 16 1 7026 W 24 160951 E 09/04-20 33 0 58 31 W 15 1 4487 W 22 96967 G 09/04-21 33 0 56 32 W 15 24 3 1 W40 1948 W 20 32983 P 09/04-22 33 0 55 33 W 15 1 1392 W 18 23184 P 09/04-23 33 0 54 34 W 15 1 836 W 16 13386 P 09/05-00 16 0 52 35 W 15 24 3 1 W43 280 W 15 3587 P 09/05-01 16 0 51 37 W 16 1 250 W 15 3162 P 09/05-02 16 0 49 38 W 16 1 219 W 14 2736 P 09/05-03 16 0 49 38 W 17 28 3 1 W47 189 W 14 2310 P 09/05-04 16 0 48 37 W 18 1 185 W 15 2390 P 09/05-05 16 0 48 35 W 20 1 182 W 16 2469 P 09/05-06 16 0 48 34 W 20 31 3 1 W49 178 W 16 2548 P 09/05-07 16 0 49 32 W 20 1 1730 W 21 40859 F 09/05-08 16 0 55 26 W 18 1 3282 W 24 79170 G 09/05-09 16 0 60 21 W 17 28 4 1 W43 4833 W 28 117480 V 09/05-10 16 0 65 18 W 16 1 7059 W 29 174460 E 09/05-11 16 0 68 16 W 15 1 9285 W 29 231440 E 09/05-12 47 0 71 15 W 15 24 4 1 W43 11511 W 29 288420 E 09/05-13 47 0 72 14 W 15 1 12043 W 30 312049 E 09/05-14 47 0 74 13 W 16 1 12575 W 31 335678 E 09/05-15 47 0 75 13 W 17 28 3 1 W41 13107 W 31 359308 E 09/05-16 47 0 74 14 W 18 1 12793 W 33 364186 E 09/05-17 47 0 73 15 W 20 1 12479 W 35 369064 E 09/05-18 49 0 73 15 W 21 33 3 1 SW40 12165 W 36 373942 E 09/05-19 49 0 69 18 W 22 1 9967 W 37 315199 E 09/05-20 49 0 66 20 SW 23 1 7769 W 39 256456 E 09/05-21 49 0 64 22 SW 24 39 3 1 SW36 5571 W 40 197713 E 09/05-22 49 0 62 24 SW 24 1 4713 W 41 168958 E 09/05-23 49 0 60 26 SW 24 1 3855 W 43 140202 V 09/06-00 30 10 58 29 SW 24 39 3 1 SW56 2997 W 43 111447 V 09/06-01 30 10 56 31 SW 23 1 2600 W 40 93009 G 09/06-02 30 10 54 33 SW 22 1 2204 W 38 74572 G 09/06-03 30 10 53 34 W 21 33 3 1 SW69 1808 W 36 56134 F 09/06-04 30 10 53 35 W 20 1 2759 W 39 99421 G 09/06-05 30 10 52 35 W 20 1 3709 W 43 142708 V 09/06-06 30 10 52 35 W 20 31 2 1 W74 4660 W 46 185995 E 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...FIRE OPERATIONS REASON FOR REQUEST...WILDFIRE .TAG 20100902.COWCR.01/BOU