Alert archive / Texas / Tornado Warnings in 2018

Tornado Warning 14, NWS Austin/San Antonio, TX

October 31, 2018Lee County, Texas

NWS Austin/San Antonio, TX issued this tornado warning at Oct 31, 2018, 4:42 PM CDT for Lee County, Texas. It was in force for 33 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Oct 31, 2018, 4:42 PM CDT (21:42 UTC)
Expired
Oct 31, 2018, 5:15 PM CDT
In force
33 min
Issued by
NWS Austin/San Antonio, TX
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

County Lee County, TX

The radar

The Ft Hood radar (KGRK), 69 km from the middle of the area, began a volume at 21:45 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Oct 31, 3:02 PM CDTTornado WatchSPC9 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 9.7 hours before the alert went out and 281 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, Fort Worth, TX at 12:00Z on 2018-10-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 270 joules per kilogram.LCLLFCEL10008507005003002001001 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, Fort Worth, TX at 12:00Z on 2018-10-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 209 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
270 J/kg
Mixed-layer CIN
-177 J/kg
Mixed-layer LCL
635 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
209 m²/s²
0-3 km storm-relative helicity
284 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.2

Open this sounding in Storm Lab

The text

As transmitted.

444 
WFUS54 KEWX 312142
TOREWX
TXC287-312215-
/O.NEW.KEWX.TO.W.0014.181031T2142Z-181031T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Austin/San Antonio TX
442 PM CDT WED OCT 31 2018

The National Weather Service in Austin San Antonio has issued a

* Tornado Warning for...
  East central Lee County in south central Texas...

* Until 515 PM CDT
    
* At 441 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Dime Box, or 8 miles southeast of Lexington,
  moving northeast at 25 mph.

  HAZARD...Tornado. 

  SOURCE...Radar indicated rotation. 

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely. 

* Locations impacted include...
  Dime Box, Lake Somerville State Park & Trailway, Old Dime Box and
  Lincoln.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3030 9672 3026 9695 3031 9700 3043 9687
      3043 9685 3039 9680 3034 9675 3033 9676
      3032 9674
TIME...MOT...LOC 2141Z 240DEG 22KT 3031 9692 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$
2 follow-up statements
470 
WWUS54 KEWX 312153
SVSEWX

Severe Weather Statement
National Weather Service Austin/San Antonio TX
453 PM CDT WED OCT 31 2018

TXC287-312215-
/O.CON.KEWX.TO.W.0014.000000T0000Z-181031T2215Z/
Lee TX-
453 PM CDT WED OCT 31 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM CDT FOR EAST
CENTRAL LEE COUNTY...
    
At 452 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Dime Box, or 11 miles southeast of Lexington, moving
northeast at 30 mph.

HAZARD...Tornado. 

SOURCE...Radar indicated rotation. 

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely. 

Locations impacted include...
Dime Box, Lake Somerville State Park & Trailway and Old Dime Box. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3028 9686 3035 9692 3040 9685 3041 9683
      3039 9680 3034 9675 3033 9676 3032 9674
      3030 9672
TIME...MOT...LOC 2152Z 243DEG 25KT 3035 9683 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$
222 
WWUS54 KEWX 312210
SVSEWX

Severe Weather Statement
National Weather Service Austin/San Antonio TX
510 PM CDT WED OCT 31 2018

TXC287-312218-
/O.EXP.KEWX.TO.W.0014.000000T0000Z-181031T2215Z/
Lee TX-
510 PM CDT WED OCT 31 2018

...THE TORNADO WARNING FOR EAST CENTRAL LEE COUNTY WILL EXPIRE AT 515
PM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire.  However small 
hail and gusty winds are still possible with this thunderstorm as it 
moves away from the area shortly.

A Tornado Watch remains in effect until 1000 PM CDT for south central
Texas.


LAT...LON 3028 9686 3035 9692 3040 9685 3041 9683
      3039 9680 3034 9675 3033 9676 3032 9674
      3030 9672
TIME...MOT...LOC 2208Z 240DEG 22KT 3038 9676 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 31, 3:35 PM CDTSpecial Weather StatementEWXLee25 min
Oct 31, 3:59 PM CDTSpecial Weather StatementEWXLee16 min
Oct 31, 4:12 PM CDTSpecial Weather StatementEWXLee48 min
Oct 31, 4:15 PM CDTTornado WarningEWXBastrop, Lee30 min
Oct 31, 4:31 PM CDTSpecial Weather StatementEWXLee44 min
Oct 31, 5:06 PM CDTSevere Thunderstorm WarningEWXBexar39 min
Oct 31, 5:14 PM CDTSevere Thunderstorm WarningEWXBexar32 min
Oct 31, 5:33 PM CDTSpecial Weather StatementEWXComal57 min
Oct 31, 5:43 PM CDTSevere Thunderstorm WarningEWXComal, Guadalupe20 min
Oct 31, 5:59 PM CDTAreal Flood AdvisoryEWXBexar, Comal80 min
Oct 31, 6:15 PM CDTSpecial Weather StatementEWXFayette45 min
Oct 31, 6:23 PM CDTSpecial Weather StatementEWXCaldwell, Gonzales, Guadalupe52 min
Oct 31, 6:31 PM CDTAreal Flood AdvisoryEWXCaldwell, Comal, Hays54 min
Oct 31, 6:43 PM CDTAreal Flood AdvisoryEWXFayette, Gonzales2 hr
Oct 31, 6:57 PM CDTSpecial Weather StatementEWXFayette63 min

Nearby

Tornado Warnings in Texas, 2018Every tornado warning in 2018Tornadoes in 2018

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.