Marine Weather and Tides
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 7:17AM||Sunset 7:16PM||Sunday September 27, 2020 2:47 AM CDT (07:47 UTC)||Moonrise 4:30PM||Moonset 2:11AM||Illumination 76%|
7 Day Forecast for Marine Location Near Preston, TXHourly EDIT Help
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.
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.
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.
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 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.
|Sherman/Denison, Grayson County Airport, TX||8 mi||52 min||SSE 10||10.00 mi||Fair||71°F||63°F||80%||1009.5 hPa|
|Durant, Eaker Field Airport, OK||14 mi||52 min||SSE 5||10.00 mi||Fair||68°F||66°F||94%||1009.8 hPa|
Link to 5 minute data for KGYI
Wind History from GYI (wind in knots)
|1 day ago||S||Calm||S||S||S||S||S||S||S||SE||S||S||S||SE||SE||SE||SE||SE||SE||SE||SE||SE||SE|
|2 days ago||NE||NE||NE||NE||NE||NE||N||N||N||N||Calm||NE||Calm||Calm||Calm||Calm||Calm||Calm||SW||SE||S||S||S||S |
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