643  
FNUS75 KBOU 181443  
FWSBOU  
 
SPOT FORECAST FOR SUGARLOAF...OTHER  
NATIONAL WEATHER SERVICE DENVER/BOULDER CO  
843 AM MDT WED JUL 18 2018  
 
FORECAST IS BASED ON REQUEST TIME OF 0900 MDT ON JULY 18.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION.
 
VERY WARM AND DRY WEATHER WILL PREVAIL THROUGH  
THURSDAY. BREEZY CONDITIONS WILL OCCUR FROM LATE MORNING THROUGH  
THE AFTERNOON BOTH TODAY AND THURSDAY. WINDS SHOULD GUST TO AROUND  
25 MPH TODAY, AND AROUND 20 MPH ON THURSDAY, ELEVATING THE FIRE  
DANGER. HUMIDITIES WILL ALSO BE LOW BOTH DAYS, WITH ONLY POOR TO  
MODERATE HUMIDITY RECOVERY AT NIGHT.  
 
DRY AND VERY CONDITIONS WILL LIKELY PERSIST THROUGH MOST OF  
FRIDAY, ALTHOUGH AN ISOLATED AFTERNOON THUNDERSTORM IS POSSIBLE.  
MOISTURE SHOULD INCREASE AGAIN SATURDAY INTO SUNDAY, WITH COOLER  
AND WETTER WEATHER DEVELOPING INTO THE FIRST PART OF NEXT WEEK.  
   
REST OF TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY UNTIL 1500, THEN PARTLY  
CLOUDY(30-35%).  
CWR.................0 PERCENT.  
LAL.................1.  
MAX TEMPERATURE.....AROUND 74.  
MIN HUMIDITY........18-20%.  
WIND (20 FT)........WEST/NORTHWEST WINDS 10-16 MPH WITH GUSTS  
AROUND 24 MPH.  
MIXING HEIGHT.......9000-10000 FT AGL.  
TRANSPORT WINDS.....NORTHWEST 25-35 MPH.  
SMOKE DISPERSAL.....EXCELLENT.  
HAINES INDEX........5 MODERATE.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR.  
CWR.................0 PERCENT.  
LAL.................1.  
MIN TEMPERATURE.....AROUND 48.  
MAX HUMIDITY........48%.  
WIND (20 FT)........SOUTHWEST WINDS 4-8 MPH.  
MIXING HEIGHT.......10000 FT AGL UNTIL 1900. 2000-2800 FT AGL AFTER  
2400.  
TRANSPORT WINDS.....WEST 10-20 MPH.  
SMOKE DISPERSAL.....EXCELLENT UNTIL 1900, THEN VERY GOOD UNTIL  
2000, THEN GOOD UNTIL 2100, THEN POOR.  
HAINES INDEX........5 MODERATE.  
   
THURSDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
CWR.................0 PERCENT.  
LAL.................1.  
MAX TEMPERATURE.....AROUND 77.  
MIN HUMIDITY........15-17%.  
WIND (20 FT)........WEST WINDS 6-12 MPH, WITH GUSTS AROUND 20 MPH.  
MIXING HEIGHT.......3400-4400 FT AGL UNTIL 0900. 11100-12100 FT AGL  
AFTER 1200.  
TRANSPORT WINDS.....WEST 10-20 MPH UNTIL 1200, THEN 20-25 MPH.  
SMOKE DISPERSAL.....POOR UNTIL 0700, THEN FAIR UNTIL 0800, THEN  
GOOD UNTIL 1000, THEN VERY GOOD UNTIL 1200,  
THEN EXCELLENT.  
HAINES INDEX........6 HIGH.  
   
FORECAST DAYS 3 THROUGH 5
 
   
FRIDAY
 
 
PARTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER  
40S. HIGHS IN THE MID 70S. WEST WINDS 5-6 MPH.    
SATURDAY
 
 
PARTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER  
40S. HIGHS IN THE MID 70S. SOUTHWEST WINDS 5-6 MPH.    
SUNDAY
 
 
MOSTLY CLOUDY. CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER 40S.  
HIGHS IN THE LOWER 70S. WEST WINDS AROUND 5 MPH.  
 
FIRE WEATHER TABLE FOR SUGARLOAF.  
 
+++ 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 15KFT MIXG TRANS VENTL AJTV  
VALID AT % % % F % WIND S I A WIND HGT WIND RATE RATNG  
MPH T L MPH AGL MPH KT-FT  
 
07/18-09 7 1 0 62 41 WNW 9 16 2 1 6635 WNW 29162769 E  
07/18-10 10 1 0 66 37 WNW 11 20 3 1 7226 WNW 29178270 E  
07/18-11 12 1 0 68 33 WNW 14 21 3 1 7816 WNW 29193935 E  
07/18-12 15 2 0 70 28 WNW 14 21 4 1 8407 WNW 29209766 E  
07/18-13 21 2 0 71 24 WNW 15 22 4 1 8979 WNW 28214921 E  
07/18-14 28 2 0 72 22 WNW 15 23 5 1 9550 WNW 26218916 E  
07/18-15 34 2 0 73 20 WNW 15 24 5 1 10122 WNW 25221750 E  
07/18-16 32 2 0 73 20 WNW 16 25 5 1 10096 WNW 24209368 E  
07/18-17 30 2 0 72 21 WNW 16 22 5 1 10069 WNW 23197048 E  
07/18-18 28 0 0 71 21 WNW 14 20 5 1 10043 WNW 21184789 E  
07/18-19 24 0 0 68 23 WNW 10 17 5 1 7941 WNW 18123726 V  
07/18-20 19 0 0 64 28 WNW 8 8 5 1 5839 WNW 15 74515 G  
07/18-21 15 0 0 61 31 WNW 6 6 5 1 3738 WNW 12 37157 P  
07/18-22 15 0 0 59 33 W 5 5 5 1 3153 WNW 10 28582 P  
07/18-23 16 0 0 58 33 WSW 6 6 5 1 2568 W 9 21032 P  
07/19-00 16 0 0 57 33 SW 6 6 5 1 1983 W 8 14505 P  
07/19-01 13 0 0 56 32 SW 6 6 5 1 2271 W 9 17483 P  
07/19-02 9 0 0 54 35 SSW 7 7 4 1 2559 W 9 20682 P  
07/19-03 6 0 0 52 38 SSW 7 7 4 1 2847 W 9 24101 P  
07/19-04 8 0 0 49 44 SSW 7 7 4 1 2735 W 9 22853 P  
07/19-05 10 0 0 48 47 SW 7 7 4 1 2624 W 10 22851 P  
07/19-06 12 0 0 49 48 WSW 7 7 3 1 2512 W 10 22770 P  
07/19-07 9 0 0 53 44 WSW 6 6 3 1 3787 W 13 41862 F  
07/19-08 7 0 0 59 37 W 6 6 3 1 5061 WNW 15 66030 G  
07/19-09 4 0 0 65 31 W 6 6 4 1 6335 WNW 17 95274 G  
07/19-10 6 0 0 69 26 W 7 8 4 1 7525 WNW 18119124 V  
07/19-11 9 0 0 72 23 W 9 10 5 1 8715 WNW 20144857 V  
07/19-12 11 3 1 73 20 WNW 10 14 5 1 9905 WNW 20172473 E  
07/19-13 15 3 1 74 19 WNW 12 17 6 1 10683 WNW 21188337 E  
07/19-14 19 3 1 75 18 WNW 13 18 6 1 11461 WNW 21204538 E  
07/19-15 23 3 1 75 18 WNW 13 20 6 1 12239 WNW 21221077 E  
07/19-16 23 3 1 76 17 WNW 13 20 6 1 12176 WNW 20205673 E  
07/19-17 24 3 1 76 17 WNW 13 18 6 1 12113 WNW 18190417 E  
07/19-18 24 7 1 74 18 NW 12 16 6 1 12050 WNW 17175309 E  
07/19-19 30 7 1 71 21 WNW 9 10 6 1 8975 WNW 14109311 V  
07/19-20 37 7 1 66 25 W 6 7 6 1 5900 WNW 12 57881 F  
07/19-21 43 7 1 62 30 W 5 5 6 1 2825 WNW 8 21021 P  
07/19-22 44 7 1 59 33 W 5 5 6 1 2556 WNW 8 18817 P  
07/19-23 44 7 1 58 33 WSW 5 5 6 1 2287 WNW 8 16655 P  
07/20-00 45 0 0 57 34 SW 5 5 6 1 2018 WNW 8 14537 P  
07/20-01 39 0 0 56 35 SW 5 5 5 1 2172 WNW 8 14320 P  
07/20-02 33 0 0 55 38 SSW 5 5 5 1 2326 W 7 13915 P  
07/20-03 27 0 0 53 41 SSW 5 5 4 1 2481 W 6 13321 P  
07/20-04 28 0 0 51 42 SSW 5 5 4 1 2278 W 7 14046 P  
07/20-05 28 0 0 49 46 SW 6 6 4 1 2076 W 8 14448 P  
07/20-06 29 3 1 50 44 SW 6 6 3 1 1873 W 9 14529 P  
07/20-07 24 3 1 54 41 WSW 6 6 3 1 3063 W 10 27625 P  
07/20-08 13 3 1 60 39 W 5 5 3 1 4253 WNW 12 43725 F  
07/20-09 8 3 1 66 34 WNW 5 5 3 1 5443 WNW 14 62829 G  
07/20-10 13 3 1 69 31 WNW 5 5 4 1 6691 WNW 13 74865 G  
07/20-11 24 3 1 71 27 WNW 6 6 4 1 7940 WNW 13 86012 G  
07/20-12 29 17 3 73 23 WNW 6 6 5 3 9189 WNW 12 96271 G  
07/20-13 33 17 3 74 21 NW 6 6 5 3 10441 WNW 10 98045 G  
07/20-14 40 17 3 75 20 NW 7 7 6 3 11694 WNW 9 97097 G  
07/20-15 44 17 3 76 19 NNW 7 7 6 3 12946 WNW 8 93427 G  
07/20-16 44 17 3 76 19 WNW 7 7 5 3 11394 W 9 85822 G  
07/20-17 44 17 3 74 21 SSW 8 8 4 3 9842 SW 9 77238 G  
07/20-18 44 12 2 72 24 SSE 8 8 3 2 8291 SSW 9 67675 G  
07/20-19 45 12 2 68 31 SSE 8 8 3 2 6274 S 12 65610 G  
07/20-20 45 12 2 64 38 SSE 8 8 3 2 4257 S 15 54286 F  
07/20-21 46 12 2 61 46 SSE 8 8 3 2 2240 S 17 33703 P  
07/20-22 44 12 2 59 49 SSE 7 7 3 2 1957 S 15 25664 P  
07/20-23 43 12 2 58 49 S 7 7 2 2 1675 SSW 13 18718 P  
07/21-00 41 3 1 57 49 S 6 6 2 1 1392 SSW 10 12866 P  
07/21-01 39 3 1 55 51 S 6 6 3 1 1385 SSW 10 12573 P  
07/21-02 38 3 1 54 52 S 6 6 3 1 1377 SSW 10 12282 P  
07/21-03 36 3 1 52 54 S 6 6 3 1 1369 SW 10 11994 P  
07/21-04 37 3 1 50 56 SSW 6 6 3 1 1334 SW 10 11452 P  
07/21-05 39 3 1 49 56 SSW 6 6 2 1 1299 SW 9 10922 P  
07/21-06 40 6 1 50 54 SW 6 6 2 1 1264 WSW 9  
 
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  
15KFT WIND - 15000 FEET ABOVE MEAN SEA 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...BARJENBRUCH  
REQUESTED BY...DANIEL ENGLAND  
TYPE OF REQUEST...WILDFIRE  
.TAG 1813035.0/BOU  
 
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