FNUS75 KBOU 081552 FWSBOU SPOT FORECAST FOR C LAZY U...USFS NATIONAL WEATHER SERVICE DENVER CO 839 AM MST MON FEB 8 2010 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...AN UPPER LEVEL LOW OVER THE NORTHERN GREAT PLAINS WILL CONTINUE TO MOVE EAST WITH A NORTH TO NORTHWESTERLY FLOW ALOFT OVER THE REGION. INCREASING STABILITY IS EXPECTED FOR TONIGHT AND TUESDAY AS A RIDGE OF HIGH PRESSURE MOVES IN FROM THE WEST. THERE WILL BE JUST A SLIGHT CHANCE OF SNOW OVER THE REGION TODAY. MOISTURE IS EXPECTED TO INCREASE OVER WESTERN COLORADO AGAIN ON TUESDAY NIGHT...AHEAD OF ANOTHER SYSTEM THAT IS EXPECTED TO PASS TO THE WEST AND SOUTH OF COLORADO. AS A RESULT...A SLIGHT CHANCE OF SNOW WILL RETURN FOR TUESDAY NIGHT. ...THUNDERSTORMS IMPLY STRONG...GUSTY AND ERRATIC WINDS... .TODAY... SKY/WEATHER.........MOSTLY CLOUDY UNTIL 1700...THEN PARTLY CLOUDY(40-50%). SLIGHT CHANCE OF SNOW UNTIL 1700. MAX TEMPERATURE.....22-26. MIN HUMIDITY........46-52%. WIND (20 FT)........NORTHEAST 3-6 MPH UNTIL 0900...THEN NORTHWEST 5-10 MPH. TRANSPORT WINDS.....NORTHWEST 5-16 MPH. MIXING HEIGHT.......4000-5000 FT AGL. SMOKE DISPERSAL.....POOR UNTIL 1000...THEN FAIR...BECOMING GOOD AFTER 1300. HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY(30-40%). MIN TEMPERATURE.....-5 TO -10. MAX HUMIDITY........90-95%. WIND (20 FT)........NORTH 4-8 MPH UNTIL 2400...THEN DOWNSLOPE/DOWNVALLEY 2-8 MPH. TRANSPORT WINDS.....NORTHWEST 4-12 MPH. MIXING HEIGHT.......2400-3400 FT AGL UNTIL 2000...THEN 200-1000 FT AGL. SMOKE DISPERSAL.....FAIR UNTIL 1900...THEN POOR. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .TUESDAY... SKY/WEATHER.........MOSTLY CLOUDY. MAX TEMPERATURE.....23-27. MIN HUMIDITY........40-45%. WIND (20 FT)........UPSLOPE/UPVALLEY 4-10 MPH UNTIL 0900...THEN SOUTHWEST 7-8 MPH. TRANSPORT WINDS.....WEST 4-8 MPH UNTIL 1200...THEN 12-16 MPH. MIXING HEIGHT.......3600-4600 FT AGL. SMOKE DISPERSAL.....POOR UNTIL 1300...THEN FAIR UNTIL 1400...THEN GOOD UNTIL 1700...THEN FAIR. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .FORECAST DAYS 3 THROUGH 5... .WEDNESDAY...MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW. LOWS AROUND 1 BELOW. HIGHS IN THE MID 20S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. .THURSDAY...MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW UNTIL 0600. LOWS AROUND 1. HIGHS IN THE LOWER 30S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. .FRIDAY...MOSTLY CLOUDY. LOWS AROUND 6. HIGHS IN THE LOWER 30S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH. EXPERIMENTAL FIRE WEATHER TABLE FOR C LAZY U. +++ 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 02/08-08 90 19 16 54 NE 3 3 2 1 N29 2085 N 3 5700 P 02/08-09 90 19 18 55 N 2 1 3007 N 6 20474 P 02/08-10 90 19 22 54 CALM 1 3929 N 9 35248 P 02/08-11 69 15 25 54 CALM 1 2 1 N31 4852 NW 12 50022 F 02/08-12 69 15 26 52 W 3 1 4973 NW 13 57301 F 02/08-13 69 15 26 49 W 6 1 5094 NW 15 64579 G 02/08-14 69 15 26 47 W 8 8 2 1 NW36 5214 NW 16 71858 G 02/08-15 69 15 26 46 NW 8 1 5068 NW 16 69070 G 02/08-16 69 15 25 47 NW 7 1 4921 NW 15 66282 G 02/08-17 43 0 23 48 NW 6 6 2 1 N37 4774 NW 15 63493 G 02/08-18 43 0 20 51 N 6 1 3521 NW 12 43451 F 02/08-19 43 0 16 57 N 5 1 2269 NW 8 23410 P 02/08-20 43 0 12 64 N 5 5 3 1 N36 1017 N 3 3368 P 02/08-21 43 0 9 70 N 3 1 754 N 3 2358 P 02/08-22 43 0 6 76 N 3 1 492 N 2 1348 P 02/08-23 31 0 3 82 N 2 2 3 1 N35 230 CALM 338 P 02/09-00 31 0 1 85 N 2 1 214 N 2 321 P 02/09-01 31 0 -1 87 CALM 1 198 W 2 304 P 02/09-02 31 0 -2 88 CALM 1 4 1 NW30 183 SW 2 287 P 02/09-03 31 0 -4 88 CALM 1 179 CALM 227 P 02/09-04 31 0 -5 87 CALM 1 176 CALM 167 P 02/09-05 63 0 -5 84 CALM 1 4 1 NW25 172 CALM 107 P 02/09-06 63 0 -5 90 CALM 1 310 CALM 205 P 02/09-07 63 0 -3 87 CALM 1 453 CALM 304 P 02/09-08 63 0 2 74 CALM 1 4 1 NW21 597 CALM 404 P 02/09-09 63 0 7 61 SE 2 1 1235 SW 3 6467 P 02/09-10 63 0 12 53 S 2 1 1873 W 6 12531 P 02/09-11 66 0 18 56 S 3 3 4 1 NW16 2510 W 8 18595 P 02/09-12 66 0 21 50 SW 5 1 3368 W 12 37949 P 02/09-13 66 0 24 44 SW 5 1 4225 W 15 57303 F 02/09-14 66 0 25 40 SW 6 6 3 1 W16 5082 W 17 76657 G 02/09-15 66 0 25 41 SW 6 1 4643 W 17 69461 G 02/09-16 66 0 23 43 SW 6 1 4204 W 17 62265 G 02/09-17 79 10 19 50 SW 6 6 2 1 W20 3765 W 17 55069 F 02/09-18 79 10 16 57 SW 6 1 2632 W 14 37534 P 02/09-19 79 10 13 64 SW 7 1 1498 W 10 19998 P 02/09-20 79 10 11 71 SW 7 7 2 1 W23 365 W 8 2462 P 02/09-21 79 10 8 77 SW 7 1 314 W 7 2059 P 02/09-22 79 10 6 82 SW 6 1 263 SW 7 1657 P 02/09-23 79 10 5 86 SW 6 6 2 1 W23 213 SW 7 1254 P 02/10-00 79 10 3 93 SW 6 1 203 SW 6 1085 P 02/10-01 79 10 2 99 SW 5 1 194 W 6 916 P 02/10-02 79 10 1 100 SW 5 5 2 1 W18 185 W 5 746 P 02/10-03 79 10 1 100 W 5 1 184 W 5 712 P 02/10-04 79 10 0 100 W 3 1 183 W 5 679 P 02/10-05 84 10 1 100 W 3 3 3 1 W18 182 W 5 645 P 02/10-06 84 10 1 100 W 3 1 236 W 5 905 P 02/10-07 84 10 2 100 SW 3 1 291 W 5 1165 P 02/10-08 84 10 6 99 SW 3 3 2 1 W24 345 W 5 1424 P 02/10-09 84 10 10 86 SW 5 1 1416 W 9 18501 P 02/10-10 84 10 14 76 W 7 1 2487 W 13 35578 P 02/10-11 84 10 18 65 W 8 8 2 1 W23 3558 W 17 52655 F 02/10-12 84 10 21 53 W 9 1 4075 W 18 66180 G 02/10-13 84 10 23 44 W 10 1 4592 W 20 79704 G 02/10-14 84 10 24 40 W 10 10 2 1 W31 5110 W 21 93229 G 02/10-15 84 10 24 40 W 9 1 4362 W 20 74993 G 02/10-16 84 10 22 44 W 8 1 3614 W 17 56758 F 02/10-17 72 20 18 53 W 7 7 2 1 W32 2866 W 15 38523 P 02/10-18 72 20 15 60 W 6 1 1995 W 12 25977 P 02/10-19 72 20 12 67 NW 6 1 1124 NW 8 13430 P 02/10-20 72 20 10 74 N 5 5 2 1 W30 253 NW 3 883 P 02/10-21 72 20 8 81 N 5 1 230 NW 3 710 P 02/10-22 72 20 6 88 N 3 1 207 NW 2 536 P 02/10-23 72 20 4 92 N 3 3 2 1 W28 184 N 2 362 P 02/11-00 72 20 3 98 N 2 1 176 NW 2 305 P 02/11-01 72 20 2 100 N 2 1 168 CALM 248 P 02/11-02 72 20 1 100 NW 2 2 2 1 NW24 160 CALM 191 P 02/11-03 72 20 1 100 NW 3 1 163 W 2 412 P 02/11-04 72 20 0 100 W 5 1 166 W 5 633 P 02/11-05 64 0 1 100 W 6 6 2 1 NW21 168 W 6 854 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...WFO BOULDER REQUESTED BY...MICHAEL ST MARTIN REASON FOR REQUEST...PRESCRIBED .TAG 20100208.CLAZY.01/BOU