Alert archive / Texas / Wind Advisories in 2017

Wind Advisory 8, NWS Austin/San Antonio, TX

October 27, 201721 counties in Texas

NWS Austin/San Antonio, TX issued this wind advisory at Oct 27, 2017, 3:43 AM CDT for 21 counties in Texas. It took effect at Oct 27, 2017, 7:00 AM CDT. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued
Oct 27, 2017, 3:43 AM CDT (08:43 UTC)
In effect from
Oct 27, 2017, 7:00 AM CDT
Expired
Oct 27, 2017, 1:00 PM CDT
In force
6 hr
Issued by
NWS Austin/San Antonio, TX
All 21 counties

Bandera County, TX, Bastrop County, TX, Bexar County, TX, Blanco County, TX, Burnet County, TX, Caldwell County, TX, Comal County, TX, Edwards County, TX, Gillespie County, TX, Guadalupe County, TX, Hays County, TX, Kendall County, TX, Kerr County, TX, Kinney County, TX, Llano County, TX, Medina County, TX, Real County, TX, Travis County, TX, Uvalde County, TX, Val Verde County, TX, Williamson County, TX

The radar

The Austin/San Antonio radar (KEWX), 82 km from the middle of the area, began a volume at 08:41 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 (KDLF), launched 00:00Z, 8.7 hours before the alert went out and 207 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 00:00Z on 2017-10-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Del Rio, TX at 00:00Z on 2017-10-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 212 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2378 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
212 m²/s²
0-3 km storm-relative helicity
299 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

857 
WWUS74 KEWX 270843
NPWEWX

URGENT - WEATHER MESSAGE
National Weather Service Austin/San Antonio TX
343 AM CDT Fri Oct 27 2017

TXZ171>173-183>193-202>208-271645-
/O.NEW.KEWX.WI.Y.0008.171027T1200Z-171027T1800Z/
Llano-Burnet-Williamson-Val Verde-Edwards-Real-Kerr-Bandera-
Gillespie-Kendall-Blanco-Hays-Travis-Bastrop-Kinney-Uvalde-Medina-
Bexar-Comal-Guadalupe-Caldwell-
Including the cities of Llano, Burnet, Georgetown, Del Rio, 
Rocksprings, Leakey, Kerrville, Bandera, Fredericksburg, Boerne, 
Blanco, San Marcos, Austin, Bastrop, Bracketville, Uvalde, Hondo,
San Antonio, New Braunfels, Seguin, and Lockhart
343 AM CDT Fri Oct 27 2017

...WIND ADVISORY IN EFFECT FROM 7 AM THIS MORNING TO 1 PM CDT
THIS AFTERNOON...

The National Weather Service in Austin/San Antonio has issued a
Wind Advisory, which is in effect from 7 AM this morning to 1 PM
CDT this afternoon. 

* TIMING...This morning through 1 PM this afternoon.

* WINDS...20-30 mph sustained with gusts to 40 mph possible.

* IMPACTS...Driving high profile vehicles will be difficult
  through the day. Large tree limbs could fall and cause damage.
  Minor damage to unsecured items that are outdoors.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory means that winds of 35 mph are expected. Winds
this strong can make driving difficult...especially for high
profile vehicles. Use extra caution.

&&

$$
1 follow-up statement
929 
WWUS74 KEWX 271529
NPWEWX

URGENT - WEATHER MESSAGE
National Weather Service Austin/San Antonio TX
1029 AM CDT Fri Oct 27 2017

TXZ171-172-183>186-188-190-202-203-271630-
/O.CAN.KEWX.WI.Y.0008.000000T0000Z-171027T1800Z/
Llano-Burnet-Val Verde-Edwards-Real-Kerr-Gillespie-Blanco-Kinney-
Uvalde-
Including the cities of Llano, Burnet, Del Rio, Rocksprings, 
Leakey, Kerrville, Fredericksburg, Blanco, Bracketville, 
and Uvalde
1029 AM CDT Fri Oct 27 2017

...WIND ADVISORY IS CANCELLED...

The National Weather Service in Austin/San Antonio has cancelled
the Wind Advisory. 

Sustained winds are expected to remain below 25 miles per hour
for the rest of this morning and afternoon, but will remain
elevated with gusts up to 35 miles per hour.

$$

TXZ173-187-189-191>193-204>208-271800-
/O.CON.KEWX.WI.Y.0008.000000T0000Z-171027T1800Z/
Williamson-Bandera-Kendall-Hays-Travis-Bastrop-Medina-Bexar-Comal-
Guadalupe-Caldwell-
Including the cities of Georgetown, Bandera, Boerne, San Marcos, 
Austin, Bastrop, Hondo, San Antonio, New Braunfels, Seguin, 
and Lockhart
1029 AM CDT Fri Oct 27 2017

...WIND ADVISORY REMAINS IN EFFECT UNTIL 1 PM CDT THIS
AFTERNOON...

* TIMING...This morning through 1 PM this afternoon.

* WINDS...20-30 mph sustained with gusts to 40 mph possible.

* IMPACTS...Driving high profile vehicles will be difficult 
  through the day. Large tree limbs could fall and cause damage. 
  Minor damage to unsecured items that are outdoors. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory means that winds of 35 mph are expected. Winds
this strong can make driving difficult...especially for high
profile vehicles. Use extra caution.

&&

$$

The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 27, 3:03 PM CDTFreeze WarningEWXBandera, Blanco, Burnet, Gillespie, Kendall, Kerr and 2 more18 hr

Nearby

Wind Advisories in Texas, 2017Every wind advisory in 2017

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.