An area of low pressure along the coast brought precipitation to South-Central Texas. With cold air in place at the surface, warmer air moved over it which led to a period of light freezing rain and sleet for the Hill Country and Edwards Plateau.
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The episode as NWS EWX wrote it up.
An area of low pressure along the coast brought precipitation to South-Central Texas. With cold air in place at the surface, warmer air moved over it which led to a period of light freezing rain and sleet for the Hill Country and Edwards Plateau. The result was light icing on elevated surfaces and tree branches.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Austin/San Antonio, TX wrote its last area forecast discussion before the first event at Jan 9, 5:39 AM CST, 4 hours 21 minutes earlier.
Area Forecast Discussion...UPDATED National Weather Service Austin/San Antonio TX 539 AM CST Thu Jan 9 2025 ...New AVIATION (12Z TAFS)... .SHORT TERM... (Today through Friday) Issued at 226 AM CST Thu Jan 9 2025 - Winter Weather Advisory in effect for the Hill Country and Edwards Plateau Thursday into Friday morning. - Wintry mix of sleet, freezing rain, and snow over the Edwards Plateau and Hill Country Thursday. Up to one tenth of an inch of ice accumulation is possible mainly on elevated surfaces. Our long advertised wintry event will begin shortly. An expensive precipitation shield has been developing over west and southwest Texas and is expected to fill in from south to north of South Central Texas by mid to late morning as an upper level low pivots further east, resulting in widespread divergence within the left exit of the 500mb jet. In combination with a slowly saturating boundary layer over the region, expect widespread showers to develop and continue through the entire afternoon. Meanwhile, in the Hill Country and Edwards Plateau, mainly freezing rain is expected to mix in as we wetbulb down into the upper 20s/lower 30s this morning and early this afternoon. Up to 1/10th of an inch of ice accumulation is expected over these areas, with perhaps some locally higher amounts if cooler temperatures can be realized along with more efficient accretion on elevated surfaces. Beyond 21Z, most if not all precip should be liquid, but there is still a chance for some wintry mix of sleet, freezing rain, and snow within the advisory area through 6am Friday. Temperatures should remain fairly steady in the upper 30s to middle and upper 40s for highs on Friday as some breaks in the clouds develop late Friday after this storm system moves away. && .LONG TERM... (Friday night through Wednesday) Issued at 226 AM CST Thu Jan 9 2025 Key Messages: - Hard freeze likely Friday night/Saturday morning. - Below normal temperatures to continue into next week. An upper level trough axis moves through south central Texas Friday night into Saturday morning. The atmosphere will be very dry as this trough moves through the region, so dry weather along with clear skies can be expected. Surface winds should drop off significantly Friday night as high pressure remains in place. With skies mostly clear and dry air (dewpoints in the teens and 20s) at the surface, we expect to see good radiational cooling conditions. This will allow for temperatures to drop into the 20s for most areas, with perhaps some readings just below 20 degrees in sheltered valleys over the Hill Country. While a few spots over the Hill Country and nearby I-35 north of San Antonio may briefly approach Cold Weather Advisory levels, these conditions should be very brief. For now, we will hold off on any headlines as wind speeds look to remain light. Southwesterly winds at the surface should help temperatures rebound into the lower 50s to lower 60s for Saturday afternoon. The NBM looks a little cool and we have nudged temperatures upward a bit. On Sunday a cold front moves in from the north during the afternoon/evening and will keep highs down in the lower to mid 50s across the Hill Country. Elsewhere, we should see highs in the lower to mid 60s. Behind the front on Monday, surface high pressure remains in place keeping highs in the lower 50s to lower 60s. We do expect to see a return of low/mid level warm air advection beginning late Monday. This will allow for cloud cover to increase from south to north. With increasing clouds and cool surface high pressure in place, highs on Tuesday will inch downward into the upper 40s to mid 50s. Some light showers may develop across the coastal plains westward to the Rio Grande on Tuesday. Precipitation amounts appear to remain low with these showers. Some differences are noted among the operational models as we head into the middle of next week. The GFS is more aggressive with regard to precipitation chances on Wednesday, while the ECMWF is drier. The difference is likely due to the flow aloft with the GFS showing an active southwest flow in place. The ECMWF ensemble tends to favor the latest operational GFS, so we may need to spread rain chances farther north in subsequent forecasts. && .AVIATION... (12Z TAFS) Issued at 528 AM CST Thu Jan 9 2025 An active period of weather is expected at all 4 TAF sites. Expect some MVFR ceilings this morning before a transition to IFR ceilings develops rather quickly at the onset of rain and showers late morning and early afternoon. Winds will remain ENE and shift to more northerly by late afternoon, then swinging around out of the northwest behind the departing surface low to the south. IFR ceilings are expected and even LIFR ceilings at times through late afternoon and into the overnight hours. Improvement to MVFR is expected by early to mid morning Friday, but winds will increase to 10-15 kts with gusts of 20-25 kts Friday. && .PRELIMINARY POINT TEMPS/POPS... Austin Camp Mabry 39 35 44 26 / 100 100 0 0 Austin Bergstrom Intl Airport 40 35 45 23 / 100 100 0 0 New Braunfels Muni Airport 41 35 46 26 / 100 100 0 0 Burnet Muni Airport 34 32 40 24 / 100 100 0 0 Del Rio Intl Airport 42 36 51 27 / 90 70 0 0 Georgetown Muni Airport 38 33 41 23 / 100 100 0 0 Hondo Muni Airport 41 35 47 24 / 100 90 0 0 San Marcos Muni Airport 40 34 45 24 / 100 100 0 0 La Grange - Fayette Regional 42 35 45 25 / 100 100 0 0 San Antonio Intl Airport 41 36 46 27 / 100 100 0 0 Stinson Muni Airport 42 37 48 27 / 100 100 0 0 && .EWX WATCHES/WARNINGS/ADVISORIES... Winter Weather Advisory until 6 AM CST Friday for Bandera-Blanco- Burnet-Edwards-Gillespie-Kendall-Kerr-Llano-Real-Val Verde. && Short-Term...MMM Long-Term...Platt Aviation...MMM
Hazardous Weather Outlook National Weather Service Austin/San Antonio TX 345 AM CST Thu Jan 9 2025 TXZ171>173-183>194-202>209-217>225-228-100945- Llano-Burnet-Williamson-Val Verde-Edwards-Real-Kerr-Bandera- Gillespie-Kendall-Blanco-Hays-Travis-Bastrop-Lee-Kinney-Uvalde- Medina-Bexar-Comal-Guadalupe-Caldwell-Fayette-Maverick-Zavala- Frio-Atascosa-Wilson-Karnes-Gonzales-De Witt-Lavaca-Dimmit- 345 AM CST Thu Jan 9 2025 This Hazardous Weather Outlook is for South-Central Texas.. .DAY ONE...Today And Tonight. A Winter Weather Advisory goes into effect across the Hill Country and Southern Edwards Plateau starting this morning at 6 AM CST. Up to a tenth of an inch of ice will be possible. Minor impacts to elevated surfaces and overpasses are expected. A few isolated slick spots on roads may be possible. Occasional sleet pellets and a few snowflakes may also occur as well but no impacts are expected from sleet or snow. Elsewhere, a cold rain can be expected. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. A Winter Weather Advisory remains in effect across the Hill Country and Southern Edwards Plateau until early Friday morning at 6 AM CST. Up to a tenth of an inch of ice will be possible. Minor impacts to elevated surfaces and overpasses are expected. A few isolated slick spots on roads may be possible. Occasional sleet pellets and a few snowflakes may also occur as well but no impacts expected from sleet or snow. Elsewhere, a cold rain will be expected. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated. && The Austin-San Antonio National Weather produces a graphical Hazardous Weather Outlook at weather.gov/erh/ghwo?wfo=ewx The last issuance of this text version of the Hazardous Weather Outlook will be issued on Monday January 13. Additional hazard information can be found in our Key Messages Section of our Area Forecast Discussion.
The national radar mosaic for the moment the first event began.
7 winter weather. Local standard time, as filed.
Light freezing rain left a glaze of ice on tree limbs in Rocksprings.
Winter precipitation started as sleet in Mountain Home and changed over to freezing rain. The freezing rain left a light glaze of ice on elevated street signs in Kerrville.
Light sleet fell near Buchanan Dam, but there was no accumulation.
There were a few patches of sleet on Shell Rd. in Serenada.
Light freezing rain left a light glaze of ice on elevated street signs in Fredericksburg, on fences in Crabapple, and tree branches in Doss and Fredericksburg.
The ASOS at Burnet Municipal Airport/Kate Craddock Field reported a trace of freezing rain.
Light freezing rain produced a light glaze of ice on tree branches near Old Tunnel State Park.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2025Every state in 2025This day in weather historyWarnings in Texas, January 2025
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 1230377, 1230376, 1230378, 1230379, 1230375, 1230374, 1230380.