343 
FNUS75 KBOU 302250
FWSBOU

Spot Forecast for Tramway...USFS
National Weather Service Denver/Boulder CO
450 PM MDT Fri May 30 2025

If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...Scattered showers and thunderstorms will continue 
through this evening. With the strongest storms, variable outflow
winds could gust up to 35 mph. It will be warm and relatively moist
tomorrow, with temperatures reaching up to the low 70s and 
relative humidity values ranging between 40-70% throughout the 
day. There will light variable winds between 5-10 mph throughout 
the day. The only exception of stronger winds would be with any 
strong convective storms that could form after 3 PM which could 
produce gusts up to 30 mph. 

.TONIGHT...

Sky/weather.........Mostly cloudy (60-70 percent) until 2200, then 
                    partly cloudy (25-35 percent). Chance of rain 
                    showers and thunderstorms until 2100. 
                    Slight chance of rain showers after 1900 until 
                    2200. 
CWR.................20 percent decreasing to 10 percent in the late 
                    evening and overnight. 
Chance of pcpn......40 percent. 
Chance of thunder...25 percent. 
Min temperature.....Around 45. 
Max humidity........76 percent. 
Wind (20 ft)........North winds 5 to 7 mph until 2000, then 
                    variable up to 5 mph until 2400, then west 
                    around 5 mph until 0400, then variable up to 5 
                    mph until 0500, then west around 5 mph. Gusty 
                    and erratic winds expected near thunderstorms 
                    until 2100. 
Mixing height.......3200 ft AGL until 2000, then 1300 ft AGL. 
Transport winds.....Northeast around 10 mph until 1900, then around 
                    8 mph until 2100, then light until 2300, then 
                    west 8 to 9 mph until 0100, then 8 to 10 mph 
                    until 0300, then 8 to 9 mph until 0500, then 
                    light. 
Smoke dispersal.....Poor. 

TIME (MDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM 
Sky (%).........77  68  58  53  45  45  25  19  17  14  14  11  
Weather cov.....CHC SCH SCH SCH                                 
Weather type....RW  RW  RW  RW                                  
Tstm cov........CHC SCH SCH                                     
CWR.............20  10  10  10  10  10  0   0   0   0   0   0   
Chc of pcpn (%).40  20  20  20  10  10  0   0   0   0   0   0   
Chc of thdr (%).30  20  20  10  10  10  0   0   0   0   0   0   
Temp............61  59  56  54  52  50  49  49  48  47  47  46  
RH..............53  57  64  66  69  71  71  71  71  71  71  71  
20 FT wind dir..N   N   N   NW  W   W   W   W   W   W   W   W   
20 FT wind spd..6   5   3   2   3   3   3   3   3   3   3   5   
20 FT wind gust.9   7   6   3   6   6   6   6   6   6   6   7   
Mix hgt (kft)...4.2 3.2 2.2 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.4 
Transp wind dir.NE  NE  N   NE  NW  W   W   W   W   W   NW  N   
Transp wind spd.10  6   5   5   5   6   6   7   7   7   6   6   
Vrate kt-ft/1K..38  16  9   5   5   7   7   8   8   8   7   7   
SmokeDispersion.P   P   P   P   P   P   P   P   P   P   P   P   

.SATURDAY...

Sky/weather.........Mostly sunny (10-20 percent) until 1200, then 
                    mostly cloudy (50-60 percent). Slight chance of 
                    rain showers and thunderstorms after 1300 until 
                    1900. 
CWR.................9 percent increasing to 15 percent in the 
                    afternoon. 
Chance of pcpn......30 percent. 
Chance of thunder...34 percent. 
Max temperature.....Around 71. 
Min humidity........41 percent. 
Wind (20 ft)........West winds around 5 mph until 0700, then 
                    variable up to 5 mph until 1100, then northeast 
                    5 to 8 mph. Gusty and erratic winds expected 
                    near thunderstorms after 1300. 
Mixing height.......2900 ft AGL until 0900. 6300 ft AGL after 1200. 
Transport winds.....Northwest around 8 mph until 0800, then light 
                    until 1000, then northwest 8 to 11 mph until 
                    1200, then north 8 to 13 mph until 1400, then 
                    northeast 8 to 12 mph. 
Smoke dispersal.....Poor until 1000, then fair until 1200, then 
                    good until 1400, then fair until 1700, then 
                    poor. 

TIME (MDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 
Sky (%).........16  19  9   12  14  24  56  56  56  56  56  56  
Weather cov.....                            SCH SCH CHC CHC CHC 
Weather type....                            RW  RW  RW  RW  RW  
Tstm cov........                            SCH SCH CHC CHC CHC 
CWR.............0   0   0   0   0   0   10  10  10  10  10  20  
Chc of pcpn (%).0   0   0   0   0   10  10  20  20  30  30  30  
Chc of thdr (%).0   0   0   0   0   10  10  20  20  30  30  30  
Temp............45  47  51  56  61  64  67  69  70  70  70  68  
RH..............76  76  74  66  53  48  43  42  41  42  42  47  
20 FT wind dir..W   W   NE  E   NE  NE  NE  E   E   E   E   E   
20 FT wind spd..5   2   2   2   3   5   6   7   7   8   8   7   
20 FT wind gust.7   3   3   3   6   7   9   12  12  13  13  12  
Mix hgt (kft)...1.4 2.3 3.4 4.5 5.7 6.9 8.0 7.4 6.7 6.1 5.3 4.6 
Transp wind dir.NW  NW  NW  W   W   NW  N   N   NE  E   E   NE  
Transp wind spd.5   5   5   6   8   9   9   12  9   9   10  8   
Vrate kt-ft/1K..6   9   14  23  40  55  64  74  54  48  48  32  
SmokeDispersion.P   P   P   P   F   F   G   G   F   F   F   P   

$$
Forecaster...Ideker
Requested by...Burn Boss (T)
Type of request...PRESCRIBED
.TAG 2514476.2/BOU
.DELDT 05/30/25
.FormatterVersion 2.0.0
.EMAIL justin.mcarthur@usda.gov