Marine Weather and Tides
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
|Sunrise 6:04AM||Sunset 8:04PM||Sunday August 9, 2020 5:12 AM MDT (11:12 UTC)||Moonrise 11:21PM||Moonset 11:48AM||Illumination 71%|
7 Day Forecast for Marine Location Near Brighton, COHourly EDIT Help
Area Discussion for - Denver/Boulder, CO  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS65 KBOU 090951 AFDBOU
Area Forecast Discussion National Weather Service Denver/Boulder CO 351 AM MDT Sun Aug 9 2020
SHORT TERM. (Today and tonight) Issued at 350 AM MDT Sun Aug 9 2020
Light westerly flow aloft will bring even drier air over our area today. Temperatures will be slightly warmer, mainly just a recovery from the slight cooling we had on the plains yesterday. Current forecast has Denver near the record high of 98, and this still looks good. With drier air, convection should be limited to a shallow cloud deck. Some models have hints of showers south of I-70 or on the eastern border this evening, but these will likely produce virga.
We should have some near surface smoke around Denver from yesterday's burning on the Pine Gulch fire near Grand Junction. This should move eastward and become more diffuse as the morning goes on, as it did yesterday. Another elevated plume should be moving over the central/northern mountains by sunset as this cycle repeats. The low to mid level flow is gradually becoming more W or WNW which will keep this smoke coming more toward Denver over the next few days, instead of north of the city as it has been.
A weak cold front will slip southward over the plains late tonight. We dropped lows tonight on the plains a little as it looks like the cooling will come a few hours faster.
LONG TERM. (Monday through Saturday) Issued at 350 AM MDT Sun Aug 9 2020
A hot and mostly dry pattern will persist through much of the period. High temperatures on Monday will be near normal following the passage of a cold front late tonight. After that, back to the 90s into next weekend. As far as thunderstorms are concerned, there will be a slight chance of storms over the higher terrain on Monday afternoon, with isolated late day thunderstorms over the northeast plains. Storms across the plains may struggle a bit more with a slightly cooler post-frontal airmass in place. On Tuesday however, there may be a better chance of storms east of the urban corridor. A dry westerly flow aloft will likely mix out the moisture along the urban corridor. Further east however, much higher dewpoints will result in some sort of dryline developing in the afternoon. Forecast soundings for Denver not very impressive, but MU CAPE values look pretty good over the northeast plains, ranging from 1500-2500 j/kg. PWAT values will be 1.0-1.1 inch as well, so a few locations could see locally heavy rainfall. SPC has placed the eastern plains in a marginal risk for Tuesday. Hail up to 1 inch and wind gusts to 60 mph would be the main threats. Wednesday through Friday, the drier westerly flow aloft will result in isolated high based thunderstorm coverage over the mountains in the afternoon, with a slight chance over the far eastern plains in the late afternoon and evening. Not much for the urban corridor to work with as downslope mixes out the low level moisture. By the weekend, the upper level ridge that is forecast to stretch across the Desert Southwest and South Central Plains this week, is progged to shift more to the west build over central NV. This will result in a northwesterly flow over northern CO. Subtropical moisture that is expected to be limited through the week, will increase as well. This could result in a better chance of afternoon and evening thunderstorms Saturday into Sunday.
AVIATION. (For the 06Z TAFS through 06Z Sunday night) Issued at 350 AM MDT Sun Aug 9 2020
VFR through tonight with winds under 12 knots. There will be some diffuse smoke in the Denver area this morning, then a plume above 14,000 ft MSL over the mountains west of the city after 22z. This should not limit visibilities at the Denver terminals, but could have minor impact on slant visibility.
FIRE WEATHER. Issued at 350 AM MDT Sun Aug 9 2020
Little change today, with hot and dry conditions. There will be afternoon breezes in the high mountains and mountain valleys similar to the last couple of days.
For the upcoming week, elevated fire danger will continue with the dry conditions and low relative humidities. The wind however, will be on the lighter side through the period. The driest conditions will be in the mountains and adjacent plains with slightly higher humidities across the far eastern plains.
BOU WATCHES/WARNINGS/ADVISORIES. None.
SHORT TERM . Gimmestad LONG TERM . Cooper AVIATION . Gimmestad FIRE WEATHER . Gimmestad/Cooper
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports. Follow links for more data.
|Denver, Denver International Airport, CO||8 mi||19 min||SW 10||10.00 mi||Mostly Cloudy||69°F||33°F||26%||1009.5 hPa|
|Buckley Air Force Base Airport, CO||15 mi||74 min||SSW 7||10.00 mi||Partly Cloudy||64°F||34°F||33%||1011.6 hPa|
|Erie Municipal Airport, CO||16 mi||18 min||S 3||10.00 mi||Fair||58°F||31°F||37%||1018.6 hPa|
|Broomfield / Jeffco, CO||19 mi||18 min||N 0||10.00 mi||Fair||70°F||26°F||20%||1020.3 hPa|
Link to 5 minute data for KDEN
Wind History from DEN (wind in knots)
|1 day ago||SW||SW||SW||SW|
|2 days ago||SW||W||SE||Calm||SW||Calm||W|
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GEOS Local Image of EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop
Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for Denver/Boulder, CO (7,2,3,4)(on/off)  Help
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