Severe Thunderstorm Warning 77, NWS Austin/San Antonio, TX

Issued

May 20, 2011, 10:32 PM CDT (03:32 UTC)

Expired

May 20, 2011, 11:15 PM CDT

In force

43 min

Issued by

NWS Austin/San Antonio, TX

Area

Storm-based polygon

Counties Caldwell County, TX, Guadalupe County, TX, Hays County, TX

The Austin/San Antonio radar (KEWX), 34 km from the middle of the area, began a volume at 03:32 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.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

225 
WUUS54 KEWX 210332
SVREWX
TXC055-187-209-210415-
/O.NEW.KEWX.SV.W.0077.110521T0332Z-110521T0415Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1032 PM CDT FRI MAY 20 2011

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL CALDWELL COUNTY...
  NORTH CENTRAL GUADALUPE COUNTY...
  SOUTH CENTRAL HAYS COUNTY...

* UNTIL 1115 PM CDT.

* AT 1024 PM CDT...NWS METEOROLOGISTS HAVE DETECTED A LINE OF SEVERE
  THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING
  WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM 17 MILES NORTHEAST OF LOCKHART TO MARTINDALE TO 14
  MILES WEST OF MARTINDALE...OR ALONG A LINE EXTENDING FROM 12 MILES
  WEST OF BASTROP TO SAN MARCOS TO 8 MILES EAST OF CANYON LAKE DAM...
  AND MOVING SOUTHEAST AT 10 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE STAPLES AND FENTRESS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THESE ARE DANGEROUS STORMS. IF YOU ARE IN THEIR PATH...PREPARE 
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD 
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A 
SHELTER...PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

&&

LAT...LON 2983 9749 2972 9777 2984 9803 2995 9776
TIME...MOT...LOC 0332Z 313DEG 9KT 3004 9747 2986 9783
          2985 9805

$$

493 
WWUS54 KEWX 210401
SVSEWX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1101 PM CDT FRI MAY 20 2011

TXC055-187-209-210415-
/O.CON.KEWX.SV.W.0077.000000T0000Z-110521T0415Z/
HAYS TX-CALDWELL TX-GUADALUPE TX-
1101 PM CDT FRI MAY 20 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 PM CDT
FOR EXTREME NORTH CENTRAL GUADALUPE...WEST CENTRAL CALDWELL AND SOUTH
CENTRAL HAYS COUNTIES...

AT 1054 PM CDT...NWS METEOROLOGISTS CONTINUED TO DETECT A LINE OF
SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG
A LINE EXTENDING FROM 10 MILES NORTHEAST OF LOCKHART TO 8 MILES
SOUTHWEST OF SAN MARCOS...MOVING EAST AT 10 MPH.

SOME LOCATIONS IN THE WARNING AREA INCLUDE MAXWELL...REDWOOD AND
MARTINDALE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HAIL UP TO QUARTER SIZE HAS BEEN REPORTED NEAR LOCKHART WITH THIS 
STORM. IF YOU ARE IN THE PATH OF THE STORM...TAKE IMMEDIATE ACTION 
TO PROTECT LIFE AND PROPERTY.

&&

LAT...LON 2986 9756 2977 9788 2984 9803 2995 9776
TIME...MOT...LOC 0401Z 279DEG 9KT 2995 9751 2982 9802

$$

Severe Thunderstorm Warnings in Texas, 2011Every severe thunderstorm warning in 2011

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