Sunday, September27, 2020
Privacy Policy
L-36.com

Marine Weather and Tides
Preston, TX

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
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 7:17AMSunset 7:16PM Sunday September 27, 2020 2:47 AM CDT (07:47 UTC) Moonrise 4:30PMMoonset 2:11AM Illumination 76% Phase: Waxing Gibbous; Moon at 10 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
    EDIT      (on/off)   Help


7 Day Forecast for Marine Location Near Preston, TX
   Hourly   EDIT   Help
location: 33.84, -96.62     debug


Area Discussion for - Fort Worth, TX
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS64 KFWD 270732 AFDFWD

Area Forecast Discussion National Weather Service Fort Worth TX 232 AM CDT Sun Sep 27 2020

SHORT TERM. /Issued 123 AM CDT Sun Sep 27 2020/ /Through Monday/

The main story through the short term forecast is our much- anticipated cold front set to sweep through the area this evening.

Most of the area will begin the day with fairly widespread cloud cover as nocturnal stratus overspreads the region. The arrival of this moisture and cloud cover is the result of a stronger low- level jet that has materialized in response to height falls and cyclogenesis to our northwest ahead of an intense upper trough. Later this morning, some of this cloud cover will begin to erode, lift, and scatter, but portions of the forecast area may remain overcast into the early afternoon. This could result in quite diverse high temperatures today, ranging anywhere from around 80 in our cloudier east to the mid 90s in the clearer west.

The strong cold front associated with the deep upper trough will plow southward into North Texas this evening. Have hedged towards some slightly faster 00z guidance which places the front in our northwestern zones around sunset, and clearing the CWA to the southeast around 4 AM Monday morning. A narrow corridor of convection is possible along the front, although there are several factors working against sustained deep convection and strong storms. The speed of the front will outpace the strongest ascent associated with the upper trough, which means mid-level cooling and the removal of a capping inversion likely won't take place while convection would still be surface-based. Also, the speed of the front would act to undercut cells as their motion would not allow them to remain in the warm sector for long, causing updrafts to quickly become elevated. This will greatly reduce cells' access to instability, and to a lesser extent deep-layer shear, as wind profiles will be rather unidirectional and of similar speeds above the frontal inversion. This would likely reduce the threat of strong storms to perhaps only some small hail, and would likely be confined to the northeastern quadrant of the CWA. The farther southwest along the front one's location, the lower the potential for measurable rainfall due to a substantial moisture gradient from east to west across the forecast area. Some locations west of I-35 will remain dry, or perhaps only experience some brief light rain or drizzle immediately along or just behind the front. The highest PoPs will generally be confined to areas east of I-35 within the better moisture, but this won't be a big rain-making system for any portion of the area. Overall, the main message with this frontal passage will be the gusty north winds which will occur across the entirety of the CWA. Winds of 20-30 mph with some higher gusts are possible with the initial passage, and breezy conditions will persist through Monday morning. While a Wind Advisory may be needed for some portions of the forecast area, would prefer another set of guidance to pin down the location of strongest winds before issuing one.

Unlike later season fronts that can have a great deal of post- frontal stratus and drizzle, this front will quickly scour moisture from the area resulting in rather abrupt clearing of any low clouds that accompany it. Some mid-level clouds will linger through Monday morning associated with ascent from the upper trough, but most of the area will clear out by late morning or afternoon. Highs on Monday should only be in the low to mid 70s thanks to strong cold advection. Breezy north winds will prevail into the day, but should diminish by the evening.

-Stalley

LONG TERM. /NEW/ /Monday Night Onward/

All precipitation will have ended by Monday night, leaving behind continued breezy conditions through around midnight. Overall, below normal temperatures will stick around through the week with no precipitation expected.

The cold front will have cleared the entire state by Monday night, leaving in its wake continued breezy winds at least through the first half of the night. As the surface pressure gradient begins to slacken, wind speeds will gradually decrease to around 5-10 mph by sunrise Tuesday morning. Early morning temperatures are expected to range from the mid 40s in the west to mid 50s in the east.

The cool airmass will begin to modify on Tuesday as cold air advection weakens and sunny skies prevail. Highs on Tuesday will remain in the mid to upper 70s, with further warming expected Wednesday. Regional temperatures both Wednesday and Thursday will be in the 80s given the return of southerly winds and ample sunshine. A reinforcing shot of cool air will arrive Thursday evening from the northeast, allowing for a return of northerly winds across the region. The arrival of this cold front will lead to highs on Friday about 5-10 cooler compared to Thursday. The battle of the airmasses will continue into next weekend as strong southerly flow develops in response to a developing Central Plains cyclone. This cyclone is expected to move east, preventing any major sensible impacts to North and Central Texas. Highs next weekend will likely be around seasonal normals.

Hernandez

AVIATION. /Issued 123 AM CDT Sun Sep 27 2020/ /06z TAFs/

While VFR currently prevails, widespread MVFR stratus will overspread all airports over the next few hours which will persist through late morning. Cigs should begin to lift and scatter by noon or so, although lingering VFR cigs could continue into the afternoon. Otherwise, south winds will be on the increase as a surface low deepens to the northwest, and gusts in the 25-30 kt range are possible throughout the day.

The next aviation concern will be the strong cold front set to sweep through the area later this evening. Have favored some slightly faster 00z guidance with this forecast issuance, and have bumped up fropa timing accordingly. There is a low chance for thunderstorms in the vicinity of the DFW area airports, but this potential is greater to the north and northeast. Will continue to carry a brief VCTS group with the front followed by VCSH afterwards for lingering post-frontal precip. A quick drop to MVFR/IFR cigs is expected immediately along the front, although this should be short lived as the cold air quickly deepens and dry air advects in behind it. One of the main concerns will be the sudden wind shift to the north with gusts up to 35 kts possible. VFR cigs will then prevail into early Monday morning with elevated wind speeds.

-Stalley

PRELIMINARY POINT TEMPS/POPS. Dallas-Ft. Worth 88 60 74 54 78 / 5 60 5 0 0 Waco 89 61 76 53 79 / 5 40 10 0 0 Paris 81 58 69 50 71 / 5 90 10 0 0 Denton 86 58 73 51 77 / 5 50 5 0 0 McKinney 86 57 73 51 76 / 5 60 5 0 0 Dallas 88 62 74 54 78 / 5 60 10 0 0 Terrell 86 59 74 51 76 / 5 70 10 0 0 Corsicana 86 60 73 53 76 / 5 70 10 0 0 Temple 88 61 74 53 79 / 5 30 5 0 0 Mineral Wells 90 57 74 48 78 / 5 20 5 0 0

FWD WATCHES/WARNINGS/ADVISORIES. None.


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Sherman/Denison, Grayson County Airport, TX8 mi52 minSSE 1010.00 miFair71°F63°F80%1009.5 hPa
Durant, Eaker Field Airport, OK14 mi52 minSSE 510.00 miFair68°F66°F94%1009.8 hPa

Link to 5 minute data for KGYI

Wind History from GYI (wind in knots)
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
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
Last 24hrSE5S8SE9SE8SE8SE10S12SE12S12S10
G15
S11SE12
G18
SE10
G18
S13SE11SE10SE10SE9SE9SE11SE11SE11SE12SE9
1 day agoS5CalmS4S4--S8S12S13S6S8SE10S8S8S9SE9SE7SE6SE7SE7SE8SE10SE7SE9SE6
2 days agoNE3NE3NE3NE3NE3NE6N7N6N4N6CalmNE4CalmCalmCalmCalmCalmCalmSW4SE6S6S6S3S4

Tide / Current Tables for
   EDIT   Weekend mode (on/off)   (on/off)   Help
Tide / Current Tables for
   EDIT      (on/off)   Help
Weather Map
       (on/off)   Help Weather Map
wmap_A
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
Ground Weather Radar Station Dallas/Fort Worth, TX
   (on/off)   Help
weather_mapweather_map weather_map


Cookie Policy:
This website uses cookies to save your settings. No personal information is saved. I do not collect statistics on your visit. You can disable cookies in your browser if you like but it is not recommended for this site. I do not sell cookies. Go to a bakery for that. In fact I do not sell anything. To disable cookies from L-36.com, please refer to the Help button in your browser.
Privacy Policy:
I do not sell or share any user data or anything else for that matter. The only personal information I save is in the site log which has a line for each page view which includes the IP address your browser sends in the header as well as which page you requested. I use this to block hackers and other bad actors. I do not use this raw data to create profiles on users. I periodically delete the log files. Google supplies the ads on this site. Because I do not track who you are, I cannot customize how these ads are served. They may be personalized to improve the ad experience. If you do not want personalized ads, please adjust the settings on the Google site HERE.
. NOTE: The best I can determine, this site is not subject to CCPA but I am doing my best to comply anyway. 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 numerous 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.