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 5:32AM||Sunset 8:21PM||Saturday May 30, 2020 5:40 PM MDT (23:40 UTC)||Moonrise 1:20PM||Moonset 2:06AM||Illumination 64%|
7 Day Forecast for Marine Location Near Cherry Creek, COHourly EDIT Help
Area Discussion for - Denver/Boulder, CO  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS65 KBOU 302046 AFDBOU
Area Forecast Discussion National Weather Service Denver/Boulder CO 246 PM MDT Sat May 30 2020
SHORT TERM. (This evening through Sunday) Issued at 229 PM MDT Sat May 30 2020
Current satellite imagery shows storms continuing to build over the higher terrain with west winds bringing them over the foothills and into the western portions of the plains. Current ACARS soundings are continuing to show a CAP over a large portion of the plains with a break temperature well above what we will be able to see today. However, CAMS continue to show gusty outflow winds with storms to the west that will allow a trigger for development later this evening. Model guidance puts a line of storms moving across the metro area after 6 pm with slightly better storm motions. Even with slightly higher mean wind storms could still produce heavy rain with some flooding possible over low-lying areas and city streets. In addition to the heavy rain, lightning and gusty winds from 30 to 40 mph will be possible. Some isolated storms could be severe with hail up to 1 inch and wind gusts of 60 mph. Storms will progress eastward through the early evening hours reaching more moisture rich air and slightly more stability. This will help to diminish any severe threat but will continue to have moderate to heavy rain possible across portions of eastern Adams, Arapahoe, Elbert and into Lincoln county through midnight.
For Sunday, an upper level trough will push through in the morning with increasing southwesterly to westerly flow behind it. This will dry out the low levels with model soundings showing inverted-V signatures nearing 500 mb and DCAPE values above 1000 J/kg. CAM output has been fairly consistent with diurnal convection starting over the higher terrain and pushing east during the late afternoon hours with gusty winds being the main threat. Highs will be slightly warmer than today with temperatures reaching into the upper 80s across the plains and 50s to 60 in the high country.
LONG TERM. (Sunday night through Saturday) Issued at 229 PM MDT Sat May 30 2020
Little change in the overall weather pattern through Tuesday with broad high pressure ridge aloft just east of Colorado while close low remains off Southern California coast. 700mb temperatures will be close to +15C for both Monday and Tuesday with resulting high temperatures in the upper 80s to around 90 degrees on the plains. There should be ample moisture for at least isolated to scattered coverage of storms each afternoon and evening as PW values range from 3/4 to around an inch of water. Best chance for storms will again be in mountains and adjacent plains and higher terrain areas.
By late Tuesday and Wednesday the flow aloft will turn a bit more westerly as a weak wave moves across the northern high plains and flattens the upper ridge. Expect some slight cooling behind a weak cold front but still ample low level moisture should be sufficient for another round of storms.
By late Thursday and Friday, the California low expected to begin to weaken and lift out in the southwest United States with increasing moisture, especially by Friday afternoon and evening. Temperatures still expected to be above normal for this time of year with high temperatures remaining in the upper 80s plains and 60s/70s in the mountains.
AVIATION. (For the 18Z TAFS through 18Z Sunday afternoon) Issued at 229 PM MDT Sat May 30 2020
VFR conditions will prevail through the TAF period Scattered thunderstorms are expected after 23z and could continue through 04z. Localized MVFR visibilities and wind gusts up to 40 knots are possible with the storms. Normal drainage patterns will prevail through 15z with another slight chance of storms after 21z on the 31st. These storms will be more high based and could produce strong gusty winds toward the end of the TAF period.
BOU WATCHES/WARNINGS/ADVISORIES. None.
SHORT TERM . Bowen LONG TERM . Entrekin AVIATION . Bowen
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 - Centennial Airport, CO||6 mi||47 min||Var 6||10.00 mi||Mostly Cloudy||78°F||50°F||37%||1015.2 hPa|
|Buckley Air Force Base Airport, CO||9 mi||1.7 hrs||E 7||10.00 mi||Mostly Cloudy||78°F||50°F||38%||1014.4 hPa|
|Denver, Denver International Airport, CO||18 mi||47 min||ESE 9||10.00 mi||Mostly Cloudy||78°F||54°F||43%||1013.8 hPa|
|Broomfield / Jeffco, CO||23 mi||50 min||NE 5||10.00 mi||Mostly Cloudy||77°F||48°F||36%||1021.7 hPa|
Link to 5 minute data for KAPA
Wind History from APA (wind in knots)
|1 day ago||E||E||NE||NE||NE||S||S||S||S||S||S||SW||Calm||SW||W||NW||NW||S||S|
|2 days ago||N||N||NW||S||S||S||S||SE||W||W||N||N||NW||N||N||N||NE||NE||NE||N||NE|
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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 (19,4,5,8)(on/off)  Help
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