Fri May 17 05:39:26 EDT 2024

Boulder And Jefferson Counties Below 6000 Feet/West Broomfield
County-
Including Arvada, Boulder, Golden, Lakewood, and Longmont
339 AM MDT Fri May 17 2024

.TODAY...
Sky/weather.........Mostly sunny. 
Max Temperature.....83-87. 
   24 hr trend......10-15 degrees warmer. 
Min Humidity........14-18%. 
   24 hr trend......4-7% drier. 
20-foot winds.......West winds 5-13 mph. Gusts up to 20 mph in the 
                    afternoon. 
Haines Index........4 or low. 
LAL.................1. 
CWR.................0 percent. 
15K FT MSL winds....West 20-30 mph. 
Mixing height.......2000-3000 ft AGL until 1000, then 12500-13500 
                    ft AGL. 
Transport winds.....West 10-15 mph until 1500, then around 20 mph. 
Smoke dispersal.....Poor until 1000. Excellent after 1400. 

.TONIGHT...
Sky/weather.........Mostly clear. 
Min Temperature.....49-53. 
   24 hr trend......Little change. 
Max Humidity........44-52%. 
   24 hr trend......2-4% drier. 
20-foot winds.......West winds 5-13 mph. Gusts up to 20 mph in the 
                    evening. 
Haines Index........4 or low. 
LAL.................1. 
CWR.................0 percent. 
15K FT MSL winds....West 30-40 mph. 
Mixing height.......10500 ft AGL until 1900, then 1500-2500 ft AGL. 
Transport winds.....West 15-20 mph until 2000, then around 10 mph. 
Smoke dispersal.....Excellent until 1900, then poor. 

.SATURDAY...
Sky/weather.........Mostly sunny until 1200, then partly 
                    cloudy(40-50%) until 1500, then mostly 
                    cloudy(55-60%). Chance of rain showers and 
                    slight chance of thunderstorms after 1200 until 
                    1500, then chance of thunderstorms. 
Max Temperature.....75-79. 
   24 hr trend......7-10 degrees cooler. 
Min Humidity........22-26%. 
   24 hr trend......7-10% wetter. 
20-foot winds.......Southeast winds 4-12 mph. 
Haines Index........4 or low. 
LAL.................1 until 1200, then 4. 
CWR.................0 percent increasing to 10 percent in the 
                    afternoon. 
15K FT MSL winds....West 25-35 mph. 
Mixing height.......5500-6500 ft AGL. 
Transport winds.....West around 10 mph until 0700, then light until 
                    0800, then southeast around 10 mph until 1100, 
                    then southwest. 
Smoke dispersal.....Poor until 1400, then good. 

.SATURDAY NIGHT...Mostly cloudy. Chance of thunderstorms. Lows in
the lower 50s. Southwest winds 4-8 mph. 
.SUNDAY...Partly cloudy. Slight chance of thunderstorms. Highs in
the lower 80s. West winds 7-14 mph. 
.MONDAY...Partly cloudy. Chance of thunderstorms. Lows around 50.
Highs in the lower 70s. Northeast winds 5-12 mph. 
.TUESDAY...Cooler. Mostly cloudy. Chance of thunderstorms. Lows
in the mid 40s. Highs in the lower 60s. North winds 4-9 mph.