Alert archive / Texas / Winter Weather Advisories in 2021

Winter Weather Advisory 3, NWS Austin/San Antonio, TX

February 13, 2021Dimmit County, Maverick County, Texas

NWS Austin/San Antonio, TX issued this winter weather advisory at Feb 13, 2021, 2:22 PM CST for Dimmit County, Maverick County, Texas. It took effect at Feb 14, 2021, 3:00 PM CST. It was in force for .

The area

The counties it named.

The facts

Issued
Feb 13, 2021, 2:22 PM CST (20:22 UTC)
In effect from
Feb 14, 2021, 3:00 PM CST
Expired
Feb 14, 2021, 10:48 AM CST
In force
Issued by
NWS Austin/San Antonio, TX

Counties Dimmit County, TX, Maverick County, TX

The radar

The Laughlin AFB radar (KDFX), 80 km from the middle of the area, began a volume at 20:25 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Del Rio, TX (KDRT), launched 12:00Z, 8.4 hours before the alert went out and 117 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Del Rio, TX at 12:00Z on 2021-02-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Del Rio, TX at 12:00Z on 2021-02-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 23 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
2 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
440 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
23 m²/s²
0-3 km storm-relative helicity
24 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

840 
WWUS44 KEWX 132022
WSWEWX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Austin/San Antonio TX
222 PM CST Sat Feb 13 2021

...MAJOR WINTER STORM TO IMPACT THE REGION THROUGH MONDAY 
MORNING...

.Bitterly cold air and wintry precipitation in the form of
freezing rain, sleet, and snow will impact the region Sunday
through Monday morning. The system could lead to major stress on
the region's infrastructure as well as cripple travel. The
coldest temperatures since 1989 will impact the region.

TXZ218>222-224-225-141000-
/O.UPG.KEWX.WS.A.0002.210214T2100Z-210215T1800Z/
/O.EXA.KEWX.WS.W.0003.000000T0000Z-210215T1800Z/
Zavala-Frio-Atascosa-Wilson-Karnes-De Witt-Lavaca-
Including the cities of Crystal City, Pearsall, Pleasanton, 
Floresville, Karnes City, Cuero, and Hallettsville
222 PM CST Sat Feb 13 2021

...WINTER STORM WARNING IN EFFECT UNTIL NOON CST MONDAY...

* WHAT...Light icing accumulations will be possible today through
  tonight and any icing will quickly become problematic. A more
  robust system will arrive Sunday afternoon and Sunday night and
  heavy mixed precipitation is expected. Snow accumulations of up
  to two inches and ice accumulations of around two tenths of an 
  inch are anticipated.

* WHERE...Portions of south central Texas.

* WHEN...Until noon CST Monday.

* ADDITIONAL DETAILS...Bitterly cold air will combine with gusty
  winds to produce wind wind chill values of 4 to 7 degrees 
  Monday morning. These values can lead to hypothermia for anyone 
  stranded within the icy roads expected.

* IMPACTS...Travel could become difficult across many areas late 
  Sunday into Monday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state can be obtained at
drivetexas.org.

&&

$$

TXZ171>173-183>194-202>209-223-141000-
/O.CON.KEWX.WS.W.0003.000000T0000Z-210215T1800Z/
Llano-Burnet-Williamson-Val Verde-Edwards-Real-Kerr-Bandera-
Gillespie-Kendall-Blanco-Hays-Travis-Bastrop-Lee-Kinney-Uvalde-
Medina-Bexar-Comal-Guadalupe-Caldwell-Fayette-Gonzales-
Including the cities of Llano, Burnet, Georgetown, Del Rio, 
Rocksprings, Leakey, Kerrville, Bandera, Fredericksburg, Boerne, 
Blanco, San Marcos, Austin, Bastrop, Giddings, Brackettville, 
Uvalde, Hondo, San Antonio, New Braunfels, Seguin, Lockhart, 
La Grange, and Gonzales
222 PM CST Sat Feb 13 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON CST MONDAY...

* WHAT...Light icing accumulations will be possible today through
  tonight and any icing on already frozen surfaces will quickly
  become problematic. A more robust system will arrive Sunday
  afternoon and Sunday night and bring total snow accumulations of
  1 to 4 inches, with isolated amounts up to 6 inches near and 
  north of a Kerrville to La Grange line, and ice accumulations of
  around 1/10 to 1/4 of an inch.

* WHERE...Near and north of a Del Rio to San Antonio to 
  Schulenburg line.

* WHEN...From 6 AM Saturday to noon CST Monday.

* IMPACTS...Travel will be very difficult to near impossible 
  across many areas late Sunday into Monday. Blowing snow in 
  some areas could reduce visibility and snow may obscure ice 
  underneath. Scattered power outages could occur, especially 
  across the Hill Country and Central Texas where ice still 
  exists from earlier rounds of winter precipitation.

* ADDITIONAL DETAILS...Bitterly cold air will combine with gusty
  winds to produce wind wind chill values of -15 to 5 degrees 
  Monday morning. These values can lead to hypothermia for anyone 
  stranded within the icy roads expected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state can be obtained at
drivetexas.org.

&&

$$

TXZ217-228-141000-
/O.UPG.KEWX.WS.A.0002.210214T2100Z-210215T1800Z/
/O.NEW.KEWX.WW.Y.0003.210214T2100Z-210215T1800Z/
Maverick-Dimmit-
Including the cities of Eagle Pass and Carrizo Springs
222 PM CST Sat Feb 13 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 3 PM SUNDAY TO NOON CST
MONDAY...

* WHAT...Mixed precipitation expected. Total snow accumulations 
  of up to one inch and ice accumulations of a light glaze.

* WHERE...Maverick and Dimmit Counties.

* WHEN...From 3 PM Sunday to noon CST Monday.

* ADDITIONAL DETAILS...Bitterly cold air will combine with gusty
  winds to produce wind wind chill values of 5 to 7 degrees Monday
  morning. These values can lead to hypothermia for anyone
  stranded within the icy roads expected. 

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state can be obtained at
drivetexas.org.

&&

$$
2 follow-up statements
665 
WWUS44 KEWX 140947
WSWEWX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Austin/San Antonio TX
347 AM CST Sun Feb 14 2021

...MAJOR WINTER STORM TO IMPACT THE REGION THROUGH MONDAY
MORNING...

.Bitterly cold air and wintry precipitation in the form of
freezing rain, sleet, and snow will impact the region today 
through Monday morning. The system could lead to major stress on 
the region's infrastructure as well as cripple travel. The coldest
temperatures since 1989 will impact the region. Wind chill indices
could fall to between 15 below zero to near zero late tonight.

TXZ171>173-183>194-202>209-218>225-142100-
/O.NEW.KEWX.WC.Y.0001.210215T0300Z-210215T1800Z/
/O.CON.KEWX.WS.W.0003.000000T0000Z-210215T1800Z/
Llano-Burnet-Williamson-Val Verde-Edwards-Real-Kerr-Bandera-
Gillespie-Kendall-Blanco-Hays-Travis-Bastrop-Lee-Kinney-Uvalde-
Medina-Bexar-Comal-Guadalupe-Caldwell-Fayette-Zavala-Frio-
Atascosa-Wilson-Karnes-Gonzales-De Witt-Lavaca-
Including the cities of Llano, Burnet, Georgetown, Del Rio, 
Rocksprings, Leakey, Kerrville, Bandera, Fredericksburg, Boerne, 
Blanco, San Marcos, Austin, Bastrop, Giddings, Brackettville, 
Uvalde, Hondo, San Antonio, New Braunfels, Seguin, Lockhart, 
La Grange, Crystal City, Pearsall, Pleasanton, Floresville, 
Karnes City, Gonzales, Cuero, and Hallettsville
347 AM CST Sun Feb 14 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON CST MONDAY...
...WIND CHILL ADVISORY IN EFFECT FROM 9 PM THIS EVENING TO NOON
CST MONDAY...

* WHAT...For the Winter Storm Warning, heavy mixed precipitation.
  Additional snow accumulations of 1 to 3 inches with isolated
  amounts near 6 inches and ice accumulations up to around one 
  tenth of an inch. For the Wind Chill Advisory, very cold wind 
  chills expected. Wind chills as low as 15 below zero.

* WHERE...Portions of south central Texas.

* WHEN...For the Winter Storm Warning, until noon CST Monday. For
  the Wind Chill Advisory, from 9 PM this evening to noon CST
  Monday.

* IMPACTS...Travel could be very difficult. The hazardous 
  conditions could impact the morning commute. The cold wind 
  chills could result in hypothermia if precautions are not 
  taken.

* ADDITIONAL DETAILS...Bitterly cold air will combine with gusty
  winds to produce wind wind chill values of -15 to around zero 
  degrees Monday morning. These values can lead to hypothermia for
  anyone stranded within the icy roads expected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

Use caution while venturing outside. Wear appropriate clothing, a
hat, and gloves. 

The latest road conditions for the state can be obtained at
drivetexas.org.

&&

$$

TXZ217-228-142100-
/O.NEW.KEWX.WC.Y.0001.210215T0300Z-210215T1800Z/
/O.CON.KEWX.WW.Y.0003.210214T2100Z-210215T1800Z/
Maverick-Dimmit-
Including the cities of Eagle Pass and Carrizo Springs
347 AM CST Sun Feb 14 2021

...WINTER WEATHER ADVISORY IS IN EFFECT FROM 3 PM THIS AFTERNOON
THROUGH NOON CST MONDAY... 
...WIND CHILL ADVISORY IN EFFECT FROM 9 PM THIS EVENING TO NOON 
CST MONDAY...

* WHAT...For the Winter Weather Advisory, mixed precipitation 
  expected. Total snow accumulations of up to one inch and ice 
  accumulations of a light glaze. For the Wind Chill Advisory, 
  very cold wind chills expected. Wind chills as low as 5 below 
  zero.

* WHERE...Maverick and Dimmit Counties.

* WHEN...For the Winter Weather Advisory, from 3 PM this afternoon
  through noon CST Monday. For the Wind Chill Advisory, from 9 
  PM this evening to noon CST Monday.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the morning commute. The cold wind 
  chills could result in hypothermia if precautions are not 
  taken.

* ADDITIONAL DETAILS...Bitterly cold air will combine with gusty
  winds to produce wind wind chill values near zero degrees Monday
  morning. These values can lead to hypothermia for anyone 
  stranded within the icy roads expected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

Use caution while venturing outside. Wear appropriate clothing, a
hat, and gloves. 

The latest road conditions for the state can be obtained at
drivetexas.org.

&&

$$
212 
WWUS44 KEWX 141648
WSWEWX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Austin/San Antonio TX
1048 AM CST Sun Feb 14 2021

...MAJOR WINTER STORM TO IMPACT THE REGION THROUGH MONDAY
MORNING...

.Bitterly cold air and wintry precipitation in the form of
freezing rain, sleet, and snow will impact the region today
through Monday morning. The system could lead to major stress on
the region's infrastructure as well as cripple travel. The
coldest temperatures since 1989 will impact the region. Wind
chill indices could fall to between 15 below zero to near zero
late tonight.

TXZ217-228-150200-
/O.UPG.KEWX.WW.Y.0003.210214T2100Z-210215T1800Z/
/O.EXA.KEWX.WS.W.0003.000000T0000Z-210215T1800Z/
/O.CON.KEWX.WC.Y.0001.210215T0300Z-210215T1800Z/
Maverick-Dimmit-
Including the cities of Eagle Pass and Carrizo Springs
1048 AM CST Sun Feb 14 2021

...WINTER STORM WARNING IN EFFECT UNTIL NOON CST MONDAY...
...WIND CHILL ADVISORY REMAINS IN EFFECT FROM 9 PM THIS EVENING
TO NOON CST MONDAY...

* WHAT...For the Winter Storm Warning, heavy snow. Additional 
  snow accumulations of up to one-two inches. For the Wind Chill 
  Advisory, very cold wind chills expected. Wind chills as low 
  as 5 below zero.

* WHERE...Maverick and Dimmit Counties.

* WHEN...For the Winter Storm Warning, until noon CST Monday. 
  For the Wind Chill Advisory, from 9 PM this evening to noon 
  CST Monday.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the morning commute. The cold wind 
  chills could result in hypothermia if precautions are not 
  taken.

* ADDITIONAL DETAILS...Bitterly cold air will combine with gusty 
  winds to produce wind wind chill values near zero degrees 
  Monday morning. These values can lead to hypothermia for 
  anyone stranded within the icy roads expected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

Use caution while traveling outside. Wear appropriate clothing, a
hat, and gloves. 

The latest road conditions for the state can be obtained at
drivetexas.org.

&&

$$

TXZ171>173-183>194-202>209-218>225-150200-
/O.CON.KEWX.WS.W.0003.000000T0000Z-210215T1800Z/
/O.CON.KEWX.WC.Y.0001.210215T0300Z-210215T1800Z/
Llano-Burnet-Williamson-Val Verde-Edwards-Real-Kerr-Bandera-
Gillespie-Kendall-Blanco-Hays-Travis-Bastrop-Lee-Kinney-Uvalde-
Medina-Bexar-Comal-Guadalupe-Caldwell-Fayette-Zavala-Frio-
Atascosa-Wilson-Karnes-Gonzales-De Witt-Lavaca-
Including the cities of Llano, Burnet, Georgetown, Del Rio, 
Rocksprings, Leakey, Kerrville, Bandera, Fredericksburg, Boerne, 
Blanco, San Marcos, Austin, Bastrop, Giddings, Brackettville, 
Uvalde, Hondo, San Antonio, New Braunfels, Seguin, Lockhart, 
La Grange, Crystal City, Pearsall, Pleasanton, Floresville, 
Karnes City, Gonzales, Cuero, and Hallettsville
1048 AM CST Sun Feb 14 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON CST MONDAY...
...WIND CHILL ADVISORY REMAINS IN EFFECT FROM 9 PM THIS EVENING
TO NOON CST MONDAY...

* WHAT...For the Winter Storm Warning, heavy mixed 
  precipitation. Additional snow accumulations of 1 to 3 inches 
  with isolated amounts near 6 inches and ice accumulations up 
  to around one tenth of an inch. For the Wind Chill Advisory, 
  very cold wind chills expected. Wind chills as low as 15 below 
  zero.

* WHERE...Portions of south central Texas.

* WHEN...For the Winter Storm Warning, until noon CST Monday. 
  For the Wind Chill Advisory, from 9 PM this evening to noon 
  CST Monday.

* IMPACTS...Travel could be very difficult. The hazardous 
  conditions could impact the morning commute. The cold wind 
  chills could result in hypothermia if precautions are not 
  taken.

* ADDITIONAL DETAILS...Bitterly cold air will combine with gusty 
  winds to produce wind wind chill values of 15 -to around zero 
  degrees Monday morning. These values can lead to hypothermia 
  for anyone stranded within the icy roads expected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

Use caution while traveling outside. Wear appropriate clothing, a
hat, and gloves. 

The latest road conditions for the state can be obtained at
drivetexas.org.

&&

$$

What forecasters said that day

The local office's own words before this winter weather advisory went out, 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 this winter weather advisory went out at Feb 13, 11:12 AM CST, 3 hours 10 minutes earlier.

Area forecast discussion, Feb 13, 11:12 AM CST, 3 hours 10 minutes before
Area Forecast Discussion
National Weather Service Austin/San Antonio TX
1112 AM CST Sat Feb 13 2021

.AVIATION...
An area of freezing drizzle remains near SAT but should clear
shortly. This area could move into AUS, but the overall trend should
be downward. There is another possibility of some freezing drizzle
or freezing rain affecting the I35 sites later this evening and then
once again tomorrow afternoon. MVFR ceilings will prevail through the
period with some possible visibility restrictions when drizzle or
rain is heaviest.

&&

.PREV DISCUSSION... /ISSUED 843 AM CST Sat Feb 13 2021/

UPDATE...
Patchy freezing drizzle continues across the area and should slowly
wane by noon or so. Expecting a brief break in activity before light
freezing rain or drizzle likely redevelops by 4-5 PM in the southern
counties then moving north. Upped the expected ice accumulations with
this activity from just trace amounts to 0.05". This amount of ice
will quickly cause problems once again. Stay home if it all possible
today.

PREV DISCUSSION... /ISSUED 533 AM CST Sat Feb 13 2021/

AVIATION (06Z TAFs)...
IFR to MVFR ceilings will prevail through the day. Patchy -FZDZ is
occurring across the region and will gradually end around 15Z.
However, another upper level disturbance approaching from the west
will provide chances for light RA/FZRA/PL to the Rio Grande late
morning through mid afternoon and to portions of the eastern Hill
Country and along and east of the I-35 corridor late afternoon
through the evening. We have included a tempo mention of -FZDZ at
SAT/AUS this morning and -FZRA this evening, we well as -RAPL at DRT
this afternoon.

PREV DISCUSSION... /ISSUED 428 AM CST Sat Feb 13 2021/

MAJOR WINTER STORM TO IMPACT THE REGION SUNDAY THROUGH MONDAY
MORNING...

Key Messages:
- Patchy freezing drizzle and freezing rain are possible today and
tonight across portions South-Central Texas along with chance of
sleet in some areas. Patchy icy conditions could make travel
difficult through portions of the Hill Country and northern I-35
corridor.
- A major winter storm will move across the region Sunday afternoon
through Monday morning. A mix of freezing rain and sleet is
initially expected, with a change over to all snow Sunday night.
Travel will be very difficult to near impossible across many areas.
Travel is discouraged. If you must travel, keep an extra flashlight,
food, and water in your vehicle in case of an emergency.
- Scattered power outages could occur, especially across the Hill
Country and Central Texas where ice still exists from earlier rounds
of winter precipitation.
- Bitterly cold air will spill into the region by Monday morning.
The coldest temperatures since 1989 are forecast Monday and Tuesday
mornings, with low temperatures in the single digits and teens.
Strong winds will make it feel even colder, with wind chill values
both mornings ranging from -15 to 5 degrees!
- Now is the time to prepare. Check frequently on those without
heat. Protect plants and pipes. Provide warm shelter for pets.

SHORT TERM (Today through Sunday)...
Area doppler radars are indicating light returns. Several automated
surface observing systems are beginning to report light freezing
rain/drizzle. This is confirmed here at our office in New Braunfels
as well as in portions of the San Antonio and Austin metro area. The
freezing drizzle is forecast to end late morning. However, another
upper level low currently rounding southwest of the Big Bend this
morning will approach the region.

Guidance is suggesting freezing rain and sleet developing across Val
Verde County mid morning and gradually expanding through the
remainder of the Rio Grande and western Hill Country early
afternoon. The dampening disturbance could provide a shot of patchy
freezing rain across the eastern Hill Country and along and east of
the I-35 corridor late this afternoon through tonight, before
exiting east of the region. Some patchy sleet can't be ruled out
across the Hill Country and northern I-35 corridor. Generally,
additional ice accumulations today and tonight are forecast to be
patchy and around or less than 1/10 of an inch for most locations.
Some light glazing is possible, which could result in some slick
roads today and tonight.

While some patchy freezing drizzle can't be ruled out again Sunday
morning, generally a temporary break in the precipitation is
expected during this time. Then, the much advertised stronger
disturbance will approach the region Sunday afternoon. Initially
areas of rain and freezing rain will gradually develop, possibly
becoming mixed with sleet across the northern 2/3rds of the CWA late
afternoon based on the low level thermal profile cooling and
deepening. Then conditions rapidly deteriorate Sunday evening (see
long term).

We have once again trended temps cooler today through Sunday.
Locations through the southern Edwards Plateau, Hill Country, and
portions of the I-35 corridor from near San Antonio northward are
forecast to not rise above freezing through the short-term forecast.

LONG TERM (Sunday Night through Friday)...
After late day Sunday begins the Winter Storm Warning impacts as a
mix of sleet and freezing rain, the evening cooling of temperatures
and upper level approach of the shortwave will start to transition
the pattern into mostly snow over western counties by late in the
evening while southern and eastern counties see mainly RA/FZRA/IP.
The eastern Hill Country and I-35 corridor areas could see quickly
deteriorating road conditions as areas of freezing rain and sleet
begin to not only accumulate on overpasses but also solid ground
surfaces even though the ice accumulations may only be around 5
hundredths to 1/10 inch.

Late at night the icy mix should transition to mostly snow for
additional accumulations over central and western counties as the
mix of FZRA and IP shift the non-snow ice accumulations over mainly
the Coastal Prairies south of I-10. By daybreak Monday as the upper
low begins to retreat east, mainly light snow is all that is
anticipated before the threat of additional accumulations ends by
noon Monday. Storm totals should be mainly below 0.2 inches for the
ice component, with the highest potential for the icy glaze to be
east of I-35. For snow accumulations, there are increasing signals
that a near widespread 1-3 inch blanket will settle over the area
with perhaps an isolated pocket of around 6 inches possible mainly
for areas north of a line from Kerrville to La Grange.

While all this activity will severely hinder travel with numerous
road closures expected, anyone stuck out in the cold will experience
an arctic chill more commonly encountered in the Central Plains.
While precipitation and clouds will still be in the area for the
Monday morning low, there should mostly single digit low temperatures
over almost all of the Hill Country and teens to near 20 for the
rest of the area. With measurable icing suggested for nearly all of
the area, the high temps for Monday will stay below freezing with
parts of the Hill Country struggling to see 20 degrees. Then as
clouds cover decreases for Monday night, the Tuesday morning lows
could threaten records across the region with near zero temps over
northern Burnet county and most of the area seeing single digits to
around 10 degrees.

But wait, the winter fun continues on Tuesday, as another disturbance
arrives in the evening to bring more winter weather that could linger
as late as daybreak Thursday. Most of the area will see at least some
residual icing from the prior event, so we are expecting nearly all
areas to become subfreezing by mid evening and additional road
hazards to develop. Thus we could be looking at more Winter Storm
Watch/Warning considerations just as soon as we recover from the one
Monday morning. The pattern aloft will potentially change with this
last shortwave being the strongest but passing mainly north of the
area to place the highest precip and winter accumulations north of
the area. Will not speculate on amounts or primary precip types for
an event over 5 days out.

This deepest of shortwaves is absorbed into the persistent troughing
pattern of the Central U.S., but being more dominant, acts as a
kicker and shifts the broader trough east by Friday. This hopefully
kicks the Arctic air habit for good and brings back more seasonal
late winter conditions by next weekend. However, widespread morning
freezes will last all the way through Friday.

&&

.PRELIMINARY POINT TEMPS/POPS...
Austin Camp Mabry              30  27  29  13  22 /  20  30  60  90  20
Austin Bergstrom Intl Airport  31  27  30  12  23 /  20  30  60  90  20
New Braunfels Muni Airport     31  28  31  14  24 /  30  30  60  90  20
Burnet Muni Airport            28  23  25   8  20 /  20  30  60  90  20
Del Rio Intl Airport           35  31  37  16  29 /  40  10  30  80  -
Georgetown Muni Airport        29  25  27   9  20 /  20  30  60  90  20
Hondo Muni Airport             32  29  34  14  29 /  30  20  40  80  10
San Marcos Muni Airport        31  27  31  13  23 /  30  30  60  90  20
La Grange - Fayette Regional   33  30  34  15  22 /  20  30  50  90  40
San Antonio Intl Airport       32  29  32  15  27 /  30  30  50  90  20
Stinson Muni Airport           33  29  33  16  28 /  30  30  50  90  10

&&

.EWX WATCHES/WARNINGS/ADVISORIES...
Winter Storm Watch from Sunday afternoon through Monday morning for
Atascosa-De Witt-Dimmit-Frio-Karnes-Lavaca-Maverick-Wilson-Zavala.

Winter Storm Warning until noon CST Monday for Bandera-Bastrop-
Bexar-Blanco-Burnet-Caldwell-Comal-Edwards-Fayette-Gillespie-
Gonzales-Guadalupe-Hays-Kendall-Kerr-Kinney-Lee-Llano-Medina-Real-
Travis-Uvalde-Val Verde-Williamson.

&&

Short-Term/Aviation...Hampshire
Long-Term...Brady
Decision Support...YBVP
Hazardous weather outlook, Feb 13, 5:01 AM CST, 9 hours 21 minutes before
Hazardous Weather Outlook
National Weather Service Austin/San Antonio TX
501 AM CST Sat Feb 13 2021

TXZ171>173-183>194-202>209-217>225-228-141115-
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-
501 AM CST Sat Feb 13 2021

This Hazardous Weather Outlook is for South-Central Texas..

.DAY ONE...Today And Tonight.

Freezing drizzle is occurring this morning. Areas of freezing rain
and sleet are possible later today through tonight. Light ice
accumulations are possible today on roads, especially bridges and
overpasses. Travel could be difficult.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Bitterly cold air and wintry precipitation in the form of
freezing rain, sleet, and snow will impact the region Sunday
through Monday morning. The system could lead to major stress on
the region's infrastructure as well as cripple travel. The coldest
temperatures since 1989 will impact the region. Winter Storm
Warnings and Watches are in effect for the entire region through
Monday morning.

Total snow accumulations of 1 to 3 inches, with isolated amounts
up to 6 inches near and north of a Kerrville to La Grange line,
and ice accumulations of around 1/10 to 1/4 of an inch are
possible Sunday afternoon through Monday morning. Travel will be
very difficult to near impossible across many areas late Sunday
into Monday. Blowing snow in some areas could reduce visibility
and snow may obscure ice underneath.

Scattered power outages could occur, especially across the Hill
Country and Central Texas where ice still exists from earlier
rounds of winter precipitation.

In addition, bitterly cold air will combine with gusty winds to
produce wind wind chill values of -15 to 5 degrees Monday and
Tuesday mornings. These values can lead to hypothermia for anyone
stranded within the icy roads expected.A final round of wintry
precipitation is forecast Tuesday night into Wednesday.

Now is the time to prepare for this hard freeze and winter
precipitation.

.SPOTTER INFORMATION STATEMENT...

Spotter are encouraged to submit ice and snow accumulations to the
National Weather Service.

In the hours before

Local storm report, Feb 13, 9:22 AM CST, 5 hours before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
922 AM CST SAT FEB 13 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0900 AM     FREEZING RAIN    DRIPPING SPRINGS        30.19N 98.09W
02/13/2021  E0.01 INCH       HAYS               TX   TRAINED SPOTTER

            LIGHT FREEZING DRIZZLE IN DRIPPING SPRINGS.
            THIN SHEET OF ICE ON SEVERAL ROADS IN THE
            AREA. 2 VEHICLES SLID INTO A GUARDRAIL.

&&

MB
Local storm report, Feb 13, 9:51 AM CST, 4 hours 31 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
951 AM CST SAT FEB 13 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0939 AM     FREEZING RAIN    9 SW FREDERICKSBURG     30.20N 99.00W
02/13/2021  E0.01 INCH       GILLESPIE          TX   BROADCAST MEDIA

            SEVERAL VEHICLES HAVE RUN OFF THE ROAD INTO
            DITCHES, INCLUDING AN 18-WHEELER ON HIGHWAY
            16 BETWEEN KERRVILLE AND FREDERICKSBURG. DUE
            TO ADDITIONAL ICING FROM FREEZING DRIZZLE
            THIS MORNING ON TOP OF POSSIBLE ICE LAYER
            FROM PREVIOUS ICE EVENT ON THURSDAY.

&&

MB
Local storm report, Feb 13, 10:38 AM CST, 3 hours 44 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1038 AM CST SAT FEB 13 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1036 AM     FREEZING RAIN    LAKEWAY                 30.36N 97.98W
02/13/2021  E0.01 INCH       TRAVIS             TX   TRAINED SPOTTER

            ONGOING FREEZING DRIZZLE RESULTING IN A
            GLAZE ON EXPOSED SURFACES, INCLUDING
            ROADWAYS IN LAKEWAY.

&&

MB
Local storm report, Feb 13, 11:15 AM CST, 3 hours 7 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1115 AM CST SAT FEB 13 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1112 AM     FREEZING RAIN    POTH                    29.07N 98.08W
02/13/2021  E0.01 INCH       WILSON             TX   PUBLIC

            LIGHT FREEZING RAIN/DRIZZLE IN POTH.

&&

MB
Local storm report, Feb 13, 11:58 AM CST, 2 hours 24 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1158 AM CST SAT FEB 13 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1046 AM     FREEZING RAIN    2 WNW CASTLE HILLS      29.54N 98.55W
02/13/2021  E0.01 INCH       BEXAR              TX   FIRE DEPT/RESCUE

            SAN ANTONIO FIRE DEPARTMENT REPORTED
            FREEZING DRIZZLE AND A GLAZE OF ICE FORMING
            ON THE EQUIPMENT AT THE FIRE STATION AT THE
            INTERSECTION OF VANCE JACKSON RD AND
            WURZBACH RD.

&&

MB
Local storm report, Feb 13, 12:04 PM CST, 2 hours 18 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1204 PM CST SAT FEB 13 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1130 AM     FREEZING RAIN    1 WNW ANDERSON MILL     30.46N 97.82W
02/13/2021  E0.01 INCH       WILLIAMSON         TX   PUBLIC

            TREE DOWN ON A POWERLINE DUE TO ICING FROM
            FREEZING RAIN NEAR THE WALGREENS AT THE
            INTERSECTION OF EL SALIDO PKWY AND RANCH
            ROAD 620 N.

&&

MB

Nearby

Winter Weather Advisories in Texas, 2021Every winter weather advisory in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.