Marine Weather and Tide Forecast for St. Hedwig, TX
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7 Day Forecast for Marine Location Near St. Hedwig, TX
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Area Discussion for Austin/San Antonio, TX
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FXUS64 KEWX 112333 AFDEWX
Area Forecast Discussion National Weather Service Austin/San Antonio TX 633 PM CDT Sun May 11 2025
New AVIATION
SHORT TERM
(Tonight through Monday night)
Issued at 145 PM CDT Sun May 11 2025
- Warming trend begins.
Satellite imagery shows the persistent upper low centered over northeastern Louisiana this afternoon, just far away from South Central Texas now to ease its influence on our weather. Some high clouds are expected this afternoon mainly from the Hill Country and areas east associated with the upper low, with clear skies prevailing to the west. Chances for showers and thunderstorms look to stay east of our area this afternoon as ridging begins to build over the west Texas. Afternoon highs will generally be in the 80s, except along the Rio Grande where the low 90s will be common. Mostly clear skies and light wind will allow tonight's temperatures to drop into the 50s for most. The upper low continues its eastward progression on Monday with northwest flow over our area. Mid-level and high level clouds will stream overhead tomorrow afternoon but will have little impact on temperatures as highs ramp up into the upper 80s to around 100 degrees. Low temperatures Monday night into Tuesday will also experience a warm up into the 60s. The real story comes in the extended forecast as an early season heat wave begins.
LONG TERM
(Tuesday through Sunday)
Issued at 145 PM CDT Sun May 11 2025
- Daily and Monthly high temperature records are at risk Tuesday through Thursday.
- Moderate to Major risk of heat-related impacts beginning Tuesday.
- Now is the time to ensure you have access to effective cooling.
Additional safety information and resources can be found at the following websites: www.heat.gov and www.weather.gov/safety/heat
One of the more dramatic temperature swings in recent memory is expected to take place between Monday and Tuesday. It was a great start to the month of May, having normal to below normal temperatures and a couple of multi-day stormy periods to help limit the long term drought impacts over the region. Now a sobering dose of reality returns with one of the hottest May heat waves of all time set to begin Tuesday.
Tuesday and Wednesday in particular are of highest concern, since the outdoor conditioning hasn't happened for those used to spending time outdoors. As a thermal ridge invades from the west, the southwest boundary layer winds will bring very dry plateau air into the region with the gusty conditions mixing dry air down to help keep the heat index values in check over at least the western counties the first two days. This means that western counties will get the driest air and thus the hottest ambient temperatures. Low level winds will not be as much out of the SW on Wednesday for central counties, and the H8 thermal ridge will be overhead signaling the hottest feeling day of the period whether be ambient or apparent. We trended back slightly on the ambient max over central counties versus what the raw model output has suggested, but we may also see the apparent temperature climb higher due to all the moisture still trapped in the soil and vegetation. Regardless Wednesday will probably be the day where monthly record maxes could have the highest chance of being broken. Thursday is expected to be almost as hot, but the thermal ridge will not be as concentrated, as the SW winds aloft show a lighter plateau influence and H5 heights begin to fall over W TX to possibly open up a more favorable pattern to bring in some high clouds and perhaps a few orographic storms west of the the forecast area. Hopefully, after we get a taste of Tuesday and Wednesday, most people will have probably adapted to how they spend their day and secure some shelter indoors at least a portion of the day, leading to few impacts. Going forward into next weekend, well above normal temps remain, and heat index values to triple digits for most areas are a good bet. As for rain chances, a sharpening SW flow aloft over TX next weekend could finally open the door for a few high terrain storms that could cross into our forecast area.
AVIATION
(00Z TAFS)
Issued at 633 PM CDT Sun May 11 2025
VFR conditions through the TAF period. NW winds quickly diminishing, becoming less than 5KT overnight. Monday afternoon a SSE wind around 5-8KT is forecast to develop along the Rio Grande, and NW to W wind around 5-8KT across the Hill Country, I-35 corridor and Coastal Plains, becoming S to SE Monday evening.
FIRE WEATHER
Issued at 145 PM CDT Sun May 11 2025
Locally elevated fire weather conditions are occurring this afternoon over western counties. Tuesday and Wednesday, elevated to near critical fire weather conditions are possible over localized areas west of I-35, as gusty south winds turn more out of the southwest but three or four days of drying through evapotranspiration could help pull back on the potential heat index, at least as
each afternoon over western counties. Triple digit heat could come with RH values as low as 10 to 15 percent. Low RH values could continue over the Edwards Plateau and Rio Grande Plains into next weekend, and afternoon temperatures are expected to remain well above normals through the period. The extended period of hot and dry weather will lead to more drying of area fuels, which could lead to more active fire weather conditions going forward.
CLIMATE
Issued at 255 AM CDT Sun May 11 2025
RECORD MAX TEMPERATURES TUESDAY THROUGH SATURDAY (* TIED RECORD WITH MOST RECENT OCCURRENCE SHOWN)
TUE WED THU FRI SAT 05/13 05/14 05/15 05/16 05/17 ------------------------------------------------------ AUS 94/1967* 96/2003 96/2003 97/2018* 97/2018 ATT 98/1925 97/2022 98/1925 99/2022* 99/2022 SAT 98/2009* 97/2022* 98/2022 97/2022* 100/2022 DRT 104/1995 103/2003 102/2022 107/2013 105/2013
RECORD MAX TEMPERATURES FOR MAY ------------------------------- AUS 102 ... set on 05/07/1998 ATT 104 ... set on 05/24/1924 SAT 104 ... set on 05/31/2004 DRT 112 ... set on 05/26/2024
PRELIMINARY POINT TEMPS/POPS
Austin Camp Mabry 58 92 64 101 / 0 0 0 0 Austin Bergstrom Intl Airport 55 91 62 100 / 0 0 0 0 New Braunfels Muni Airport 56 94 61 102 / 0 0 0 0 Burnet Muni Airport 56 90 64 101 / 0 0 0 0 Del Rio Intl Airport 60 98 68 107 / 0 0 0 0 Georgetown Muni Airport 55 89 62 101 / 0 0 0 0 Hondo Muni Airport 55 94 61 105 / 0 0 0 0 San Marcos Muni Airport 55 92 61 101 / 0 0 0 0 La Grange - Fayette Regional 56 88 64 97 / 0 0 0 0 San Antonio Intl Airport 58 94 65 103 / 0 0 0 0 Stinson Muni Airport 58 95 64 103 / 0 0 0 0
EWX WATCHES/WARNINGS/ADVISORIES
None.
Area Forecast Discussion National Weather Service Austin/San Antonio TX 633 PM CDT Sun May 11 2025
New AVIATION
SHORT TERM
(Tonight through Monday night)
Issued at 145 PM CDT Sun May 11 2025
- Warming trend begins.
Satellite imagery shows the persistent upper low centered over northeastern Louisiana this afternoon, just far away from South Central Texas now to ease its influence on our weather. Some high clouds are expected this afternoon mainly from the Hill Country and areas east associated with the upper low, with clear skies prevailing to the west. Chances for showers and thunderstorms look to stay east of our area this afternoon as ridging begins to build over the west Texas. Afternoon highs will generally be in the 80s, except along the Rio Grande where the low 90s will be common. Mostly clear skies and light wind will allow tonight's temperatures to drop into the 50s for most. The upper low continues its eastward progression on Monday with northwest flow over our area. Mid-level and high level clouds will stream overhead tomorrow afternoon but will have little impact on temperatures as highs ramp up into the upper 80s to around 100 degrees. Low temperatures Monday night into Tuesday will also experience a warm up into the 60s. The real story comes in the extended forecast as an early season heat wave begins.
LONG TERM
(Tuesday through Sunday)
Issued at 145 PM CDT Sun May 11 2025
- Daily and Monthly high temperature records are at risk Tuesday through Thursday.
- Moderate to Major risk of heat-related impacts beginning Tuesday.
- Now is the time to ensure you have access to effective cooling.
Additional safety information and resources can be found at the following websites: www.heat.gov and www.weather.gov/safety/heat
One of the more dramatic temperature swings in recent memory is expected to take place between Monday and Tuesday. It was a great start to the month of May, having normal to below normal temperatures and a couple of multi-day stormy periods to help limit the long term drought impacts over the region. Now a sobering dose of reality returns with one of the hottest May heat waves of all time set to begin Tuesday.
Tuesday and Wednesday in particular are of highest concern, since the outdoor conditioning hasn't happened for those used to spending time outdoors. As a thermal ridge invades from the west, the southwest boundary layer winds will bring very dry plateau air into the region with the gusty conditions mixing dry air down to help keep the heat index values in check over at least the western counties the first two days. This means that western counties will get the driest air and thus the hottest ambient temperatures. Low level winds will not be as much out of the SW on Wednesday for central counties, and the H8 thermal ridge will be overhead signaling the hottest feeling day of the period whether be ambient or apparent. We trended back slightly on the ambient max over central counties versus what the raw model output has suggested, but we may also see the apparent temperature climb higher due to all the moisture still trapped in the soil and vegetation. Regardless Wednesday will probably be the day where monthly record maxes could have the highest chance of being broken. Thursday is expected to be almost as hot, but the thermal ridge will not be as concentrated, as the SW winds aloft show a lighter plateau influence and H5 heights begin to fall over W TX to possibly open up a more favorable pattern to bring in some high clouds and perhaps a few orographic storms west of the the forecast area. Hopefully, after we get a taste of Tuesday and Wednesday, most people will have probably adapted to how they spend their day and secure some shelter indoors at least a portion of the day, leading to few impacts. Going forward into next weekend, well above normal temps remain, and heat index values to triple digits for most areas are a good bet. As for rain chances, a sharpening SW flow aloft over TX next weekend could finally open the door for a few high terrain storms that could cross into our forecast area.
AVIATION
(00Z TAFS)
Issued at 633 PM CDT Sun May 11 2025
VFR conditions through the TAF period. NW winds quickly diminishing, becoming less than 5KT overnight. Monday afternoon a SSE wind around 5-8KT is forecast to develop along the Rio Grande, and NW to W wind around 5-8KT across the Hill Country, I-35 corridor and Coastal Plains, becoming S to SE Monday evening.
FIRE WEATHER
Issued at 145 PM CDT Sun May 11 2025
Locally elevated fire weather conditions are occurring this afternoon over western counties. Tuesday and Wednesday, elevated to near critical fire weather conditions are possible over localized areas west of I-35, as gusty south winds turn more out of the southwest but three or four days of drying through evapotranspiration could help pull back on the potential heat index, at least as
each afternoon over western counties. Triple digit heat could come with RH values as low as 10 to 15 percent. Low RH values could continue over the Edwards Plateau and Rio Grande Plains into next weekend, and afternoon temperatures are expected to remain well above normals through the period. The extended period of hot and dry weather will lead to more drying of area fuels, which could lead to more active fire weather conditions going forward.
CLIMATE
Issued at 255 AM CDT Sun May 11 2025
RECORD MAX TEMPERATURES TUESDAY THROUGH SATURDAY (* TIED RECORD WITH MOST RECENT OCCURRENCE SHOWN)
TUE WED THU FRI SAT 05/13 05/14 05/15 05/16 05/17 ------------------------------------------------------ AUS 94/1967* 96/2003 96/2003 97/2018* 97/2018 ATT 98/1925 97/2022 98/1925 99/2022* 99/2022 SAT 98/2009* 97/2022* 98/2022 97/2022* 100/2022 DRT 104/1995 103/2003 102/2022 107/2013 105/2013
RECORD MAX TEMPERATURES FOR MAY ------------------------------- AUS 102 ... set on 05/07/1998 ATT 104 ... set on 05/24/1924 SAT 104 ... set on 05/31/2004 DRT 112 ... set on 05/26/2024
PRELIMINARY POINT TEMPS/POPS
Austin Camp Mabry 58 92 64 101 / 0 0 0 0 Austin Bergstrom Intl Airport 55 91 62 100 / 0 0 0 0 New Braunfels Muni Airport 56 94 61 102 / 0 0 0 0 Burnet Muni Airport 56 90 64 101 / 0 0 0 0 Del Rio Intl Airport 60 98 68 107 / 0 0 0 0 Georgetown Muni Airport 55 89 62 101 / 0 0 0 0 Hondo Muni Airport 55 94 61 105 / 0 0 0 0 San Marcos Muni Airport 55 92 61 101 / 0 0 0 0 La Grange - Fayette Regional 56 88 64 97 / 0 0 0 0 San Antonio Intl Airport 58 94 65 103 / 0 0 0 0 Stinson Muni Airport 58 95 64 103 / 0 0 0 0
EWX WATCHES/WARNINGS/ADVISORIES
None.
| Airport | Dist | Age | Wind kt | Vis | Sky | Weather | Air | DewPt | RH | inHg |
| KRND RANDOLPH AFB,TX | 7 sm | 47 min | N 03 | 10 sm | Clear | 70°F | 36°F | 28% | 29.98 | |
| KSAT SAN ANTONIO INTL,TX | 14 sm | 51 min | calm | 10 sm | A Few Clouds | 73°F | 36°F | 25% | 29.99 | |
| KSSF STINSON MUNI,TX | 14 sm | 49 min | calm | 10 sm | Clear | 75°F | 36°F | 24% | 29.96 | |
| KSKF KELLY FLD,TX | 19 sm | 47 min | NE 06 | 10 sm | Clear | 72°F | 34°F | 25% | 29.95 | |
| KSEQ RANDOLPH AFB AUX,TX | 20 sm | 47 min | N 04 | 10 sm | Clear | 70°F | 46°F | 43% | 29.94 | |
| KBAZ NEW BRAUNFELS RGNL,TX | 22 sm | 51 min | NE 05 | 10 sm | Clear | 70°F | 39°F | 33% | 29.98 |
Link to 1 hour of 5 minute data for KRND
Terminal Aerodrome Forecast (TAF) for KRND
Wind History Graph: RND
(wind in knots)
GEOS Local Image of southern planes -- texas
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Austin/San Antonio, TX,
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