Alert archive / Texas / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 52, NWS Houston/Galveston, TX

May 9, 20134 counties in Texas

NWS Houston/Galveston, TX issued this severe thunderstorm warning at May 9, 2013, 7:04 PM CDT for 4 counties in Texas. It was in force for 41 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 9, 2013, 7:04 PM CDT (00:04 UTC)
Expired
May 9, 2013, 7:45 PM CDT
In force
41 min
Issued by
NWS Houston/Galveston, TX
Area
Storm-based polygon

Counties Montgomery County, TX, Polk County, TX, San Jacinto County, TX, Walker County, TX

The radar

The Houston radar (KHGX), 127 km from the middle of the area, began a volume at 00:08 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
May 9, 3:34 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 0.1 hours before the alert went out and 206 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 2013-05-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1022 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 2013-05-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 74 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
1022 J/kg
Mixed-layer CIN
-49 J/kg
Mixed-layer LCL
820 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
74 m²/s²
0-3 km storm-relative helicity
156 m²/s²
Significant tornado parameter
0.6
Supercell composite
4.0

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 9, 7:04 PM CDT, 0 minutes earlier.

Area forecast discussion, May 9, 7:04 PM CDT, 0 minutes before
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Hazardous weather outlook, May 9, 6:12 AM CDT, 12 hours 52 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
612 AM CDT THU MAY 9 2013

TXZ163-164-176>179-195>200-210>214-226-227-235>238-101115-
AUSTIN-BRAZORIA-BRAZOS-BURLESON-CHAMBERS-COLORADO-FORT BEND-
GALVESTON-GRIMES-HARRIS-HOUSTON-JACKSON-LIBERTY-MADISON-MATAGORDA-
MONTGOMERY-POLK-SAN JACINTO-TRINITY-WALKER-WALLER-WASHINGTON-
WHARTON-
612 AM CDT THU MAY 9 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST TEXAS.

.DAY ONE...TODAY AND TONIGHT

THE PRESENCE OF A PASSING SHORTWAVE DISTURBANCE WILL DETERMINE
THE TIMING...LOCATION AND SEVERITY OF RAIN AND STORM ACTIVITY
LATTER TODAY. THE HIGHEST CHANCE FOR SIGNIFICANT WEATHER WILL BE
PRIMARILY FOCUSED ALONG AND NORTH OF THE INTERSTATE 10 CORRIDOR
FROM MID-DAY THROUGH THE OVERNIGHT HOURS FRIDAY MORNING. A STRONG
CAPPING INVERSION IS CURRENTLY IN PLACE AND THIS MAY LIMIT TODAY'S
RAIN CHANCES. ALTHOUGH INITIALLY DRIVEN BY A LARGER SCALE IMPULSE...
SMALLER SCALE INFLUENCES WILL LIKELY DICTATE THE WHEN AND WHERE OF
FUTURE DOWNSTREAM THUNDERSTORM DEVELOPMENT. THE MAIN THREATS FROM
ANY THUNDERSTORM ACTIVITY WILL BE DAMAGING DOWNBURST WINDS AND
LARGE HAIL.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

A SERIES OF UPPER LEVEL DISTURBANCES WILL CROSS SOUTHEAST TEXAS
FRIDAY THROUGH SATURDAY. THESE DISTURBANCES WILL LIKELY PRODUCE
OCCASIONAL SHOWERS AND THUNDERSTORMS...TIMING AND LOCATION WILL
REMAIN UNCLEAR. A COLD FRONT WILL ALSO PUSH SOUTH ACROSS THE
REGION SATURDAY THAT COULD ALLOW HEAVIER RAIN AND STORMS TO FOCUS
ACROSS THE FORECAST AREA'S MORE CENTRAL AND SOUTHERN COUNTIES.
CURRENT FORECAST STORM TOTAL RAINFALL AMOUNTS FROM OCCANSIONAL
EPISODES OF RAIN...OR SHOWERY WEATHER...AND SCATTERED THUNDERSTORM
ACTIVITY WILL AVERAGE BETWEEN AN AREAWIDE 1 AND 2 INCHES WITH THE
HIGHER TOTALS IN THE 3 TO 5 INCH RANGE WHERE TRAINING OCCURS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER AWARENESS AND POSSIBLE REPORTS WILL BE NEEDED FROM THIS
AFTERNOON THROUGH SATURDAY.

In the hours before

Local storm report, May 9, 5:27 PM CDT, 1 hour 37 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
527 PM CDT THU MAY 09 2013

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

0510 PM     TSTM WND DMG     MADISONVILLE            30.95N  95.91W
05/09/2013                   MADISON            TX   LAW ENFORCEMENT

            NUMEROUS TREES DOWN ACROSS THE COUNTY

&&

EVENT NUMBER HGX1300064

MCKINNEY
Special weather statement, May 9, 5:39 PM CDT, 1 hour 25 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
539 PM CDT THU MAY 9 2013

TXZ195-196-092330-
BURLESON TX-BRAZOS TX-
539 PM CDT THU MAY 9 2013

...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL BURLESON AND
SOUTHEASTERN BRAZOS COUNTIES UNTIL 630 PM CDT...

AT 535 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR COLLEGE STATION...MOVING EAST AT 35 MPH.

HAIL UP TO THE SIZE OF PEAS AND WIND GUSTS UP TO 40 MPH WILL BE
POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
COLLEGE STATION AND BRYAN.

LAT...LON 3082 9620 3062 9617 3060 9619 3057 9617
      3046 9615 3046 9638 3063 9642
TIME...MOT...LOC 2235Z 259DEG 32KT 3057 9632
Local storm report, May 9, 5:49 PM CDT, 1 hour 15 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
549 PM CDT THU MAY 09 2013

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

0548 PM     HAIL             COLLEGE STATION         30.60N  96.31W
05/09/2013  M1.00 INCH       BRAZOS             TX   TRAINED SPOTTER

            QUARTER SIZED HAIL AT DEACON DRIVE AND RIO GRANDE

&&

EVENT NUMBER HGX1300065

MCKINNEY
Local storm report, May 9, 6:25 PM CDT, 39 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
625 PM CDT THU MAY 09 2013

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

0615 PM     TSTM WND DMG     TRINITY                 30.94N  95.37W
05/09/2013                   TRINITY            TX   LAW ENFORCEMENT

            POWER LINES DOWN IN TRINITY COUNTY

&&

EVENT NUMBER HGX1300066

MCKINNEY
Special weather statement, May 9, 6:41 PM CDT, 23 minutes before
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Local storm report, May 9, 6:56 PM CDT, 8 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
May 9, 7:24 PM CDTSevere Thunderstorm WarningHGXPolk, Trinity36 min
May 9, 7:36 PM CDTSevere Thunderstorm WarningHGXPolk, San Jacinto39 min
May 9, 9:11 PM CDTSpecial Weather StatementHGXGrimes49 min
May 9, 9:21 PM CDTAreal Flood AdvisoryHGXGrimes, Madison, Polk, San Jacinto, Trinity, Walker114 min
May 9, 11:17 PM CDTAreal Flood AdvisoryHGXSan Jacinto, Trinity, Walker58 min
May 10, 1:11 AM CDTSpecial Weather StatementHGXColorado34 min
May 10, 1:25 AM CDTSpecial Weather StatementHGXAustin35 min
May 10, 1:52 AM CDTSpecial Weather StatementHGXHarris38 min
May 10, 1:55 AM CDTSevere Thunderstorm WarningHGXBrazoria, Fort Bend, Harris35 min
May 10, 2:01 AM CDTSpecial Weather StatementHGXAustin29 min
May 10, 2:21 AM CDTSpecial Weather StatementHGXWaller39 min
May 10, 2:31 AM CDTSevere Thunderstorm WarningHGXChambers, Harris, Liberty44 min
May 10, 2:44 AM CDTAreal Flood AdvisoryHGXBrazoria, Chambers, Fort Bend, Harris, Liberty2 hr
May 10, 2:47 AM CDTSpecial Marine WarningHGX88 min
May 10, 3:13 AM CDTFlash Flood WarningHGXHarris2 hr
May 10, 3:41 AM CDTSpecial Weather StatementHGXChambers34 min
May 10, 4:18 AM CDTFlash Flood WatchHGXFort Bend, Grimes, Harris, Liberty, Montgomery, Polk and 3 more24 hr
May 10, 8:29 AM CDTSpecial Weather StatementHGXAustin31 min
May 10, 8:32 AM CDTSpecial Weather StatementHGXAustin, Waller43 min
May 10, 8:53 AM CDTSevere Thunderstorm WarningHGXAustin, Waller37 min
May 10, 9:01 AM CDTSpecial Weather StatementHGXBrazos44 min
May 10, 9:09 AM CDTSpecial Weather StatementHGXColorado51 min
May 10, 9:18 AM CDTSpecial Weather StatementHGXFort Bend42 min
May 10, 9:34 AM CDTSpecial Weather StatementHGXWharton41 min
May 10, 9:43 AM CDTSevere Thunderstorm WarningHGXColorado, Jackson, Wharton32 min
May 10, 9:49 AM CDTAreal Flood AdvisoryHGXAustin, Colorado, Fort Bend, Harris, Waller, Wharton116 min
May 10, 9:54 AM CDTSevere Thunderstorm WarningHGXHarris, Liberty36 min
May 10, 10:02 AM CDTFlash Flood WarningHGXAustin, Fort Bend, Harris, Waller3 hr
May 10, 10:02 AM CDTSevere Thunderstorm WarningHGXFort Bend, Harris28 min
May 10, 10:11 AM CDTSpecial Weather StatementHGXWharton49 min
May 10, 10:32 AM CDTSevere Thunderstorm WarningHGXBrazoria, Fort Bend28 min
May 10, 10:38 AM CDTTornado WarningHGXBrazoria, Fort Bend37 min
May 10, 10:55 AM CDTSpecial Marine WarningHGX95 min
May 10, 10:58 AM CDTSpecial Weather StatementHGXChambers47 min
May 10, 11:00 AM CDTSpecial Marine WarningHGX90 min
May 10, 11:05 AM CDTTornado WarningHGXBrazoria, Galveston25 min
May 10, 11:07 AM CDTAreal Flood AdvisoryHGXBrazoria, Fort Bend, Galveston, Harris, Matagorda, Wharton3 hr
May 10, 11:19 AM CDTSpecial Weather StatementHGXBrazoria, Matagorda41 min
May 10, 11:25 AM CDTSevere Thunderstorm WarningHGXBrazoria, Chambers, Galveston, Harris50 min
May 10, 11:38 AM CDTSpecial Marine WarningHGX37 min
May 10, 11:43 AM CDTSpecial Weather StatementHGXChambers47 min
May 10, 11:46 AM CDTRiver Flood WarningHGXHarris139 days
May 10, 12:17 PM CDTSpecial Marine WarningHGX58 min
May 10, 1:22 PM CDTSpecial Marine WarningHGX38 min
May 10, 1:30 PM CDTSpecial Marine WarningHGX30 min
May 10, 1:37 PM CDTSpecial Weather StatementHGXChambers23 min
May 10, 2:26 PM CDTSpecial Marine WarningHGX49 min
May 10, 2:29 PM CDTSmall Craft AdvisoryHGX91 min
May 10, 3:18 PM CDTSpecial Marine WarningHGX42 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.