Thursday, September23, 2021
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Marine Weather and Tides
Englewood, CO

Version 3.4
NOTICE
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 6:47AMSunset 6:56PM Thursday September 23, 2021 9:51 PM MDT (03:51 UTC) Moonrise 7:31PMMoonset 8:21AM Illumination 92% Phase: Waning Gibbous; Moon at 17 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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7 Day Forecast for Marine Location Near Englewood, CO
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location: 39.68, -105     debug


Area Discussion for - Denver/Boulder, CO
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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 Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Denver - Centennial Airport, CO12 mi59 minE 410.00 miPartly Cloudy67°F25°F20%1016.4 hPa
Buckley Air Force Base Airport, CO14 mi54 minE 410.00 miMostly Cloudy64°F25°F22%1015.7 hPa
Broomfield / Jeffco, CO17 mi67 minNNE 610.00 miMostly Cloudy72°F25°F17%1022 hPa
Denver, Denver International Airport, CO22 mi59 minENE 710.00 miMostly Cloudy65°F26°F23%1014.6 hPa
Erie Municipal Airport, CO23 mi57 minNNE 910.00 miOvercast71°F24°F17%1021.3 hPa

Link to 5 minute data for KAPA

Wind History from APA (wind in knots)
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Last 24hrS12S15S9S6S7SE7S6S5CalmSE3SE3W8W4NW5NW5E5E5E10
G16
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G15
NE7NE7N5NE5E4
1 day agoSE7S7S6S8SW8SW6S5SW7SW6S5SE3S4Calm6S4--E7NE6E7E8E6E6SE6SE10
2 days agoNE9N9NE5NE5E6E5S3SW5CalmCalmSW3N4N5CalmCalm6NE33NE8NE6NE8
G15
NE4E4SE5

Tide / Current Tables for
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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.
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