Sunday, April18, 2021
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Marine Weather and Tides
Bertram, TX

Version 3.4
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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 6:58AMSunset 8:02PM Sunday April 18, 2021 3:15 PM CDT (20:15 UTC) Moonrise 10:25AMMoonset 12:14AM Illumination 43% Phase: First Quarter Moon; Moon at 7 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 Bertram, TX
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location: 30.79, -98     debug


Area Discussion for - Austin/San Antonio, TX
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FXUS64 KEWX 181923 AFDEWX

Area Forecast Discussion National Weather Service Austin/San Antonio TX 223 PM CDT Sun Apr 18 2021

SHORT TERM (Today through Monday).

A weak mid level disturbance has been producing isolated elevated showers and patchy sprinkles this afternoon across northern and eastern areas of the CWA. This activity should continue to weaken and move east through the remainder of the afternoon, with a lull in precip expected by this evening through most of tonight.

However, an upper level low currently across Arizona is forecast to dig southeast into Mexico tonight and then open and move east through the Big Bend and into South-Central Texas on Monday. Elevated convection could develop during the early morning hours across Val Verde County, spreading northeast through the Hill Country during the day as the energy gets stretched southwest to northeast. the GFS and ECMWF aren't too impressive with the mid- level moisture, however they under achieved with today's moisture and resulting elevated showers. We have went higher than NBM PoPs from Val Verde through the Rio Grande, forecasting isolated to widely scattered showers from the Rio Grande through the Hill Country, similar to several HREF members. Can't completely rule out an isolated thunderstorm or two through this region. Farther east, there could be some sprinkles or isolated showers into the I-35 corridor Monday afternoon and early evening, however we have left mention out for now.

Cool temperatures are forecast tonight, dipping into the mid 40s to low 50s. Slightly warmer tomorrow, into the low to mid 70s for most areas as a weak east to southeast low level flow resumes.

LONG TERM (Monday Night through Saturday).

A mid to upper level short wave moving across the Central and Southern Plains into the Middle Mississippi Valley on Tuesday and Tuesday night sends a cold front across South Central Texas. The cold front is forecast to push across the area early to mid afternoon and exit late afternoon. Behind the frontal boundary strong northerly winds are expected for the afternoon into Tuesday night as a strong surface high pressure builds across the Southern Plains. Northerly winds of 15 to 25 mph and gusts up to 30 mph are expected. Before the cool air spreads across the area on Tuesday night, highs are forecast to range from the upper 70s across the Hill Country to mid 80s across the southwest counties. As the night progresses, the dry and cool air takes over and provides an early feels-like fall night with temperatures in the lower 40s and 50s. Can't rule out some 30s over few spots across the Hill Country.

By Wednesday, temperatures are forecast to range from the mid to upper 60s across the Hill Country to mid 70s elsewhere. Late Wednesday night into Thursday, the surface high pressure pushes to the east and allows the return of southerly flow across the area. Increased gulf moisture pushes to the north and into the lower Rio Grande, where a few showers are expected early Thursday morning. The increased moisture and instability will lead to more shower activity during the day on Thursday through Friday as an upper level system moves over Baja California and then northern Mexico for the latter part of the work week.

This setup has the potential for strong to severe thunderstorm activity especially on Friday. At this time is hard to pin point those areas to possibly be affected as model guidance differ with the passage of the upper level disturbance and a frontal boundary over the weekend. Stay tuned for updates as the event gets closer.

PRELIMINARY POINT TEMPS/POPS. Austin Camp Mabry 68 48 73 51 81 / 10 0 10 - - Austin Bergstrom Intl Airport 68 46 74 49 81 / 10 0 10 10 - New Braunfels Muni Airport 69 48 76 50 83 / 10 0 10 - - Burnet Muni Airport 66 46 71 48 74 / 10 0 10 - - Del Rio Intl Airport 72 53 75 53 85 / - 20 30 0 0 Georgetown Muni Airport 68 46 72 49 79 / 10 0 10 10 - Hondo Muni Airport 72 48 76 49 85 / 10 0 10 0 0 San Marcos Muni Airport 69 45 75 48 82 / 10 0 10 - - La Grange - Fayette Regional 69 46 74 51 80 / 10 0 10 10 - San Antonio Intl Airport 70 50 74 52 83 / 10 0 10 - - Stinson Muni Airport 71 50 76 51 84 / 10 0 10 - -

EWX WATCHES/WARNINGS/ADVISORIES. None.

Short-Term/Aviation . Runyen Long-Term . 17


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Burnet, Burnet Municipal Craddock Field, TX13 mi22 minNNE 610.00 miFair64°F40°F41%1020 hPa
Georgetown, Georgetown Municipal Airport, TX18 mi19 minN 9 G 1410.00 miFair67°F40°F37%1020.3 hPa
Lago Vista TX, Rusty Allen Airport, TX20 mi20 minNNE 710.00 miFair66°F39°F36%1020.3 hPa
Fort Hood, Robert Gray AAF Ft Hood, TX21 mi19 minN 10 G 1710.00 miMostly Cloudy65°F38°F37%1018.8 hPa
Lampasas, Lampasas Airport, TX24 mi60 minNNE 7 G 1710.00 miFair62°F39°F42%1019.6 hPa

Link to 5 minute data for KBMQ

Wind History from BMQ (wind in knots)
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Last 24hrN9
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1 day agoN7N10
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2 days agoNE8E5NE6NE5NE6E9E8NE6E7E5SE5E4E4E3E4E4--S4S7S5CalmN5NE5N6

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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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