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Marine Weather and Tides
Version 3.4 |
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports. 6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen |
| Sunrise 6:16AM | Sunset 7:47PM | Wednesday August 21, 2019 1:50 PM MDT (19:50 UTC) | Moonrise 11:05PM | Moonset 11:50AM | Illumination 63% |  |
7 Day Forecast for Marine Location Near Calhan, CO
Hourly EDIT Helplocation: 38.85, -104 debug
Area Discussion for - Denver/Boulder, CO
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus65 kbou 211640 afdbou area forecast discussion national weather service denver boulder co 1040 am mdt Wed aug 21 2019 Update Issued at 1040 am mdt Wed aug 21 2019 forecast still on track today with scattered thunderstorms expected to form this afternoon over the foothills. These storms will spread east and southeast onto the urban corridor and plains through mid evening. Ml CAPE will be 1500-2500 j kg and precipitable water values will be around an inch, so plenty of instability and moisture for the storms. The 0-6km bulk shear should range 30-35 knots, which puts the storm mode in the multicellular to supercell range. Golfball size hail or slightly larger, wind gusts to 60 mph, and very heavy rain will be possible with the strongest storms. Short term (today and tonight) issued at 518 am mdt Wed aug 21 2019 moist northeast flow was prevalent overnight as outflow from thunderstorms over wyoming and western nebraska moved across the plains. The moist airmass and upslope winds have produced low clouds along the foothills and over the i-25 corridor. Skies further to the east appear to be partly cloudy. Dew points across northeast colorado are now in the mid and upper 50s with temperatures in the upper 50s to mid 60s. Weak westerly flow aloft is going to continue over colorado today as a weak upper level ridge remains over the southwest united states. Daytime heating of the moist airmass along with continuing upslope, easterly flow will cause the airmass to de-stabilize and produce another round of showers and thunderstorms. Temperatures will be 10 to 15 degrees cooler than the past couple days, due to the rain cooled air that was pushed into the state overnight. However, the moist airmass and vertical wind shear profile is going to create a favorable environment for strong to possibly severe thunderstorms to develop. The storm prediction center has all of eastern colorado in a marginal risk of severe thunderstorms. Large hail, heavy rains and damaging winds will all be possible with afternoon thunderstorm activity. Warming through the day will be dependent on amount of cloud cover that persists into the late morning. Differential heating produced by areas of cloud cover near areas in full sunshine will produce local boundaries for shower activity to initiate along. With the winds at 500 mb only forecast to be 15-20 knots over northern colorado, slow storm motions will also be possible, which will lead to locally heavy rain showers. All in all, it could turn into a rather active afternoon and evening, with shower activity continuing until almost midnight on the far northeast plains. Long term (Thursday through Tuesday) issued at 518 am mdt Wed aug 21 2019 models have the upper ridge still over the CWA on Thursday with weak westerly flow aloft. A weak upper trough is expected to move |
across the CWA on Friday. North-northwesterly flow aloft is progged Friday night. There is weak upward energy in the synoptic scale on the QG omega fields for the CWA Thursday through Friday morning. The low level winds will be southeasterly over the plains Thursday, with normal drainage patterns for all the CWA Thursday night. East and southeasterlies are progged on Friday, with more drainage winds Friday night. For moisture, precipitable water values are in the 0.5 inch west to 1.10 inch east range Thursday into Friday morning. Moisture increases a bit more Friday afternoon and evening. There is pretty decent CAPE over all the plains on Thursday, then over the eastern half of the plains Thursday evening. There is pretty high CAPE around again for the plains Friday and Friday evening. There is a cap in the lower to mid levels according to lapse rates on cross sections both Thursday and Friday. However they weaken considerably by mid afternoon both days. The QPF fields show some measurable precipitation over the eastern three quarters of the CWA late day Thursday, but less amounts late day Friday mainly over the eastern half of the cwa. For pops, will go with 10-30%s for late day Thursday and 10-20%s for late day Friday. High temperatures will be 1-4 c warmer on Thursday compared to today's highs. Friday's readings will be 0-2 c warmer than Thursday's. For the later days, Saturday through Tuesday, models have the upper ridge over the southwestern u.S. With a mean trough north and east of colorado. The CWA generally has northwesterly flow aloft Saturday through Monday. Zonal flow aloft is progged on Tuesday. The airmass is dry Saturday and Sunday, with some increase in moisture on Monday and Tuesday. Temperatures look hot again, especially on Saturday and Sunday. Aviation (for the 18z tafs through 18z Thursday afternoon) issued at 1040 am mdt Wed aug 21 2019 scattered thunderstorms are expected to form over the foothills this afternoon and spread east through the early evening hours. Best chance for den to see thunderstorms will be 00z to 04z. For kbjc and kapa the best chance will be slightly sooner 23z to 03z. Large hail, winds to 50 knots, and heavy rainfall will accompany the stronger storms. Weak southeast winds will increase and turn easterly after 18z. Outflow winds from nearby thunderstorms will produce a wind shift or two at the denver airports today. Once convection ends this evening, winds will settle at a southerly drainage direction at kapa and kden. Low clouds are expected to form over eastern colorado with ceilings of 1000-3000 feet. There is a chance these low clouds make it far enough west to impact kden. Bou watches warnings advisories None. Update... Meier short term... Dankers long term... Rjk aviation... Meier |
Weather Reporting Stations
EDIT (on/off) Help NOTE: Click on distance to see the station location on a mapAirport Reports
EDIT (on/off) Help Click EDIT to display multiple airports. Follow links for more data.| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| ELLICOTT-B AFA, CO | 18 mi | 1.9 hrs | E 8 | 10.00 mi | Fair | 75°F | 54°F | 48% | 1017.5 hPa |
Link to 5 minute data for KABH
Wind History from ABH (wind in knots)
| 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | 10 PM | 11 PM | 12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | 12 PM | 1 PM | |
| Last 24hr | E | N | NW | NE | E | E | E | NE | NE | N | NE | N | N | S | NE | N | NW | N | N | N | NE | E | E | E |
| 1 day ago | NW | Calm | S | S | SW | NW | SE | N | Calm | N | N | Calm | N | SE | SE | E | NE | N | ||||||
| 2 days ago | SW G19 | S G20 | S G19 | S G21 | S G22 | SE G22 | SE | E | E | E | E | SE | E | SE | Calm | Calm | N | N | N | W | Calm | N |
Tide / Current Tables for
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GOES 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 (15,3,4,5)
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Ground Weather Radar Station Pueblo, CO
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Disclaimer: The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program. |