Marine Weather and Tides
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.
|Sunrise 6:47AM||Sunset 6:56PM||Thursday September 23, 2021 9:51 PM MDT (03:51 UTC)||Moonrise 7:31PM||Moonset 8:21AM||Illumination 92%|
7 Day Forecast for Marine Location Near Englewood, COHourly EDIT Help
Area Discussion for - Denver/Boulder, CO  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS65 KBOU 240316 AFDBOU
Area Forecast Discussion National Weather Service Denver/Boulder CO 916 PM MDT Thu Sep 23 2021
UPDATE. Issued at 911 PM MDT Thu Sep 23 2021
Scattered light showers continue in the mountains this evening with weak upper low over Utah and some marginal moisture streaming into Colorado from the southwest. The weak showers expected to dissipate around midnight. Across the plains, mainly areas of middle and high level clouds but remaining dry. Surface high pressure to the north continues to keep light northeast low level flow across the plains. Expect a milder night with more cloud cover tonight. Current forecast in good shape.
SHORT TERM. (This evening through Friday) Issued at 105 PM MDT Thu Sep 23 2021
Veiled skies today under a thin layer of smoke, most of which is aloft resulting in a return to slightly hazy skies. Cumulus development can be observed over the mountains, where a few elevated showers and thunderstorms may form this afternoon and evening. Moisture will be confined to mid and upper levels of the atmosphere, with a dry sub-layer limiting activity to just virga or light rain in most cases. Locally gusty outflow winds will be possible nonetheless.
Over in the plains, low relative humidity below 15% combined with locally breezy conditions will sustain elevated to briefly critical fire weather conditions through early this evening. Abundant clouds will stream over the area tonight, and will help keep low temperatures on the milder side in the 40's for much of the plains, and low 50's for the Denver metro. Some of the high valleys may still fall below freezing.
Friday will be a little cooler as the shortwave trough currently just west of the forecast area moves on east. Highs in the plains will stay in the 70's, with 60's for most of the high country. Skies should become progressively clearer through the day. As for smoke, the passing shortwave looks to flush most of it out to our east, so expecting an improvement in visibility as a result.
LONG TERM. (Friday night through Thursday) Issued at 105 PM MDT Thu Sep 23 2021
Temperatures will climb back towards 90 over the weekend as a ridge of high pressure builds over the West. The flow aloft will remain dry and transition from northwesterly on Saturday to westerly on Sunday. In addition, the models still indicate a weak lee trough developing over eastern CO. The fire danger will be elevated in spots due to the dry and unseasonably warm conditions. By early next week, a weak closed low over Baja CA over the weekend will slip northeast towards the Four Corners, and the lee trough over eastern CO weakens. Still above average in terms of temperatures, but there will be some slight cooling. This disorganized system meanders across southern CO/NM on Tuesday, with the ridge axis shifting eastward into the Central Plains. By mid week, another trough will extend from the northern Rockies into the Great Basin. This is poorly organized as well but it should provide more seasonal temperatures with a better chance of showers/thunderstorms for the forecast area through the latter part of next week, as it slowly shifts eastward across CO. Extended models not in sync regarding the timing of the next system, but the trend for more seasonal temperatures with a better
AVIATION. (For the 06Z TAFS through 06Z Friday night) Issued at 911 PM MDT Thu Sep 23 2021
Light north to northeast surface wind expected for a few more hours and then possibly shift northwest a bit fore turning back southwest later tonight. VFR with areas of mid and high level clouds, gradually thinning overnight. Still some elevated smoke tonight but should see less smoke on Friday.
FIRE WEATHER. Issued at 105 PM MDT Thu Sep 23 2021
Widespread elevated to locally briefly critical fire weather conditions will continue through early this evening for the plains, particularly Weld, Morgan and Lincoln counties, due to the combination of breezy winds and low humidity below 15%. The fire danger will be elevated over the weekend in spots due to the dry and unseasonably warm conditions. Min rh values will be in the 10-15% range but with more marginal wind criteria, so no highlights anticipated at this time.
BOU WATCHES/WARNINGS/ADVISORIES. None.
UPDATE . Entrekin SHORT TERM . Rodriguez LONG TERM . Cooper AVIATION . Rodriguez FIRE WEATHER . Rodriguez/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 - Centennial Airport, CO||12 mi||59 min||E 4||10.00 mi||Partly Cloudy||67°F||25°F||20%||1016.4 hPa|
|Buckley Air Force Base Airport, CO||14 mi||54 min||E 4||10.00 mi||Mostly Cloudy||64°F||25°F||22%||1015.7 hPa|
|Broomfield / Jeffco, CO||17 mi||67 min||NNE 6||10.00 mi||Mostly Cloudy||72°F||25°F||17%||1022 hPa|
|Denver, Denver International Airport, CO||22 mi||59 min||ENE 7||10.00 mi||Mostly Cloudy||65°F||26°F||23%||1014.6 hPa|
|Erie Municipal Airport, CO||23 mi||57 min||NNE 9||10.00 mi||Overcast||71°F||24°F||17%||1021.3 hPa|
Link to 5 minute data for KAPA
Wind History from APA (wind in knots)
|1 day ago||SE||S||S||S||SW||SW||S||SW||SW||S||SE||S||Calm||S||E||NE||E||E||E||E||SE||SE|
|2 days ago||NE||N||NE||NE||E||E||S||SW||Calm||Calm||SW||N||N||Calm||Calm||NE||NE||NE||NE|
EDIT Weekend mode (on/off) (on/off)  Help
EDIT (on/off)  Help
Weather Map(on/off)  Help Weather Map
GEOS Local Image of EDIT
NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
Link to Loop
Other links: GEOS-West Contential US Full GOES-East
Please read website Cookie, Privacy, and Disclamers by clicking HERE.