Alert archive / Texas / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 73, NWS Houston/Galveston, TX

May 22, 2013Liberty County, Montgomery County, Texas

NWS Houston/Galveston, TX issued this severe thunderstorm warning at May 22, 2013, 2:25 AM CDT for Liberty County, Montgomery County, Texas. It was in force for 65 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
May 22, 2013, 2:25 AM CDT (07:25 UTC)
Expired
May 22, 2013, 3:30 AM CDT
In force
65 min
Issued by
NWS Houston/Galveston, TX
Area
Storm-based polygon

Counties Liberty County, TX, Montgomery County, TX

The radar

The Houston radar (KHGX), 84 km from the middle of the area, began a volume at 07:27 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

Lake Charles Mun, LA (KLCH), launched 00:00Z, 7.4 hours before the alert went out and 189 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, Lake Charles Mun, LA at 00:00Z on 2013-05-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2268 joules per kilogram.LCLLFCEL10008507005003002001001 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, Lake Charles Mun, LA at 00:00Z on 2013-05-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 54 square meters per square second.193958Sfc1 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
2268 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
629 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
54 m²/s²
0-3 km storm-relative helicity
68 m²/s²
Significant tornado parameter
0.9
Supercell composite
5.7

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Houston/Galveston, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at May 22, 2:18 AM CDT, 7 minutes earlier.

Area forecast discussion, May 22, 2:18 AM CDT, 7 minutes before
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Hazardous weather outlook, May 21, 3:52 PM CDT, 10 hours 33 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
352 PM CDT TUE MAY 21 2013

TXZ163-164-176>179-195>200-210>213-226-227-221300-
AUSTIN-BRAZOS-BURLESON-COLORADO-FORT BEND-GRIMES-HARRIS-HOUSTON-
LIBERTY-MADISON-MONTGOMERY-POLK-SAN JACINTO-TRINITY-WALKER-WALLER-
WASHINGTON-WHARTON-
352 PM CDT TUE MAY 21 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST TEXAS.

.DAY ONE...THIS AFTERNOON AND TONIGHT

A LINE OF THUNDERSTORMS ARE EXPECTED TO MOVE ACROSS THE AREA THIS
EVENING. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS MAINLY
ALONG AND NORTH OF A LINE FROM EAGLE LAKE TO HOUSTON TO LIBERTY.
THERE IS A MODERATE RISK GENERALLY ALONG AND NORTH OF A LINE FROM
NEAR KURTEN IN NORTHERN BRAZOS COUNTY TO MADISONVILLE TO LOVELADY
TO CENTRALIA IN NORTHERN TRINITY COUNTY. THE MAIN TIME FRAME WILL
LIKELY BE BETWEEN 6 PM AND MIDNIGHT. THE MAIN THREAT ARE DAMAGING
WIND AND LARGE HAIL...ALTHOUGH ISOLATED TORNADOES ARE POSSIBLE.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

SLOW MOVING THUNDERSTORMS WITH HEAVY DOWNPOURS MAY BE POSSIBLE
FOR AREAS MAINLY SOUTH OF THE INTERSTATE 10 CORRIDOR. AN UPPER
LEVEL RIDGE OF HIGH PRESSURE WILL EXPAND OVER THE REGION THURSDAY
THROUGH SUNDAY LEADING TO DRIER AND HOTTER WEATHER.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED TONIGHT.

GMZ330-335-350-355-370-375-TXZ214-235>238-221300-
BRAZORIA-CHAMBERS-GALVESTON-GALVESTON BAY-JACKSON-MATAGORDA-
MATAGORDA BAY-
WATERS FROM FREEPORT TO THE MATAGORDA SHIP CHANNEL 20 NM TO 60 NM-
WATERS FROM FREEPORT TO THE MATAGORDA SHIP CHANNEL OUT 20 NM-
WATERS FROM HIGH ISLAND TO FREEPORT 20 TO 60 NM-
WATERS FROM HIGH ISLAND TO FREEPORT OUT 20 NM-
352 PM CDT TUE MAY 21 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST TEXAS.

.DAY ONE...THIS AFTERNOON AND TONIGHT

ISOLATED TO SCATTERED THUNDERSTORMS ARE POSSIBLE TONIGHT. ISOLATED
STRONG STORMS ARE POSSIBLE WITH THE MAIN THREAT DAMAGING WINDS
AND SMALL HAIL.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME.

In the hours before

Special weather statement, May 21, 11:23 PM CDT, 3 hours 2 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
1123 PM CDT TUE MAY 21 2013

TXZ179-220500-
POLK TX-
1123 PM CDT TUE MAY 21 2013

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN POLK COUNTY UNTIL 1200
AM CDT...

AT 1122 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A STRONG THUNDERSTORM NEAR CORRIGAN...MOVING NORTHEAST AT 20 MPH.

HAIL UP TO THE SIZE OF NICKELS AND WIND GUSTS UP TO 50 MPH WILL BE
POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
CORRIGAN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 3101 9465 3096 9465 3088 9495 3100 9498
      3114 9483 3110 9474 3111 9471 3109 9466
      3110 9465 3109 9464 3106 9456
TIME...MOT...LOC 0412Z 243DEG 19KT 3099 9486
Special weather statement, May 22, 12:27 AM CDT, 1 hour 58 minutes before
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Local storm report, May 22, 12:59 AM CDT, 1 hour 26 minutes before
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Special weather statement, May 22, 1:21 AM CDT, 1 hour 4 minutes before
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Local storm report, May 22, 1:25 AM CDT, 1 hour before
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Special weather statement, May 22, 1:41 AM CDT, 44 minutes before
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The office that day

Everything else NWS Houston/Galveston, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 21, 7:26 PM CDTSpecial Weather StatementHGXLeon49 min
May 21, 7:33 PM CDTSpecial Weather StatementHGXBrazos27 min
May 21, 7:35 PM CDTSevere Thunderstorm WarningHGXGrimes, Houston, Madison, Walker40 min
May 21, 7:42 PM CDTSevere Thunderstorm WarningHGXBrazos, Grimes, Madison48 min
May 21, 8:33 PM CDTSevere Thunderstorm WarningHGXBrazos, Burleson, Grimes, Madison42 min
May 21, 8:50 PM CDTSpecial Weather StatementHGXTrinity40 min
May 21, 8:59 PM CDTSevere Thunderstorm WarningHGXHouston, Trinity31 min
May 21, 9:02 PM CDTAreal Flood AdvisoryHGXBrazos, Madison118 min
May 21, 9:16 PM CDTSevere Thunderstorm WarningHGXGrimes, Madison, Walker29 min
May 21, 9:22 PM CDTSevere Thunderstorm WarningHGXHouston, Polk, Trinity53 min
May 21, 9:31 PM CDTSpecial Weather StatementHGXMadison59 min
May 21, 10:02 PM CDTSpecial Weather StatementHGXWalker58 min
May 21, 10:34 PM CDTSpecial Weather StatementHGXGrimes, Walker56 min
May 21, 10:47 PM CDTSevere Thunderstorm WarningHGXWalker43 min
May 21, 10:55 PM CDTTornado WarningHGXGrimes, Montgomery, Walker35 min
May 21, 11:23 PM CDTSpecial Weather StatementHGXPolk37 min
May 21, 11:31 PM CDTSevere Thunderstorm WarningHGXPolk29 min
May 21, 11:46 PM CDTTornado WarningHGXMontgomery29 min
May 22, 12:27 AM CDTSpecial Weather StatementHGXMontgomery, Polk, San Jacinto63 min
May 22, 1:21 AM CDTSpecial Weather StatementHGXMontgomery, San Jacinto24 min
May 22, 1:41 AM CDTSpecial Weather StatementHGXPolk49 min
May 22, 3:06 AM CDTSpecial Weather StatementHGXHarris54 min
May 22, 3:18 AM CDTSpecial Weather StatementHGXLiberty, Montgomery72 min
May 22, 3:33 AM CDTSevere Thunderstorm WarningHGXLiberty27 min
May 22, 3:35 AM CDTSevere Thunderstorm WarningHGXLiberty, Polk, San Jacinto55 min
May 22, 3:49 AM CDTAreal Flood AdvisoryHGXLiberty, Montgomery, San Jacinto3 hr
May 22, 3:55 AM CDTSpecial Weather StatementHGXHarris65 min
May 22, 4:24 AM CDTSevere Thunderstorm WarningHGXLiberty36 min
May 22, 4:48 AM CDTSevere Thunderstorm WarningHGXChambers, Liberty57 min

Nearby

Severe Thunderstorm Warnings in Texas, 2013Every severe thunderstorm warning in 2013

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.