Alert archive / Texas / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 16, NWS Houston/Galveston, TX

April 6, 20194 counties in Texas

NWS Houston/Galveston, TX issued this severe thunderstorm warning at Apr 6, 2019, 9:59 AM CDT for 4 counties in Texas. It was in force for 24 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
Apr 6, 2019, 9:59 AM CDT (14:59 UTC)
Expired
Apr 6, 2019, 10:23 AM CDT
In force
24 min
Issued by
NWS Houston/Galveston, TX
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

Counties Brazos County, TX, Burleson County, TX, Grimes County, TX, Washington County, TX

The radar

The Ft Hood radar (KGRK), 105 km from the middle of the area, began a volume at 15:03 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

Fort Worth, TX (KFWD), launched 12:00Z, 3.0 hours before the alert went out and 277 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 2019-04-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1268 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, Fort Worth, TX at 12:00Z on 2019-04-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 83 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
1268 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
544 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
83 m²/s²
0-3 km storm-relative helicity
36 m²/s²
Significant tornado parameter
0.3
Supercell composite
1.6

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 Apr 6, 6:22 AM CDT, 3 hours 37 minutes earlier.

Area forecast discussion, Apr 6, 6:22 AM CDT, 3 hours 37 minutes before
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Hazardous weather outlook, Apr 6, 5:27 AM CDT, 4 hours 32 minutes before
Hazardous Weather Outlook
National Weather Service Houston/Galveston TX
527 AM CDT Sat Apr 6 2019

TXZ163-164-176>179-195>200-210>214-226-227-235>238-300-313-
335>338-436>438-071030-
Austin-Brazoria Islands-Brazos-Burleson-Chambers-Coastal Brazoria-
Coastal Galveston-Coastal Harris-Coastal Jackson-
Coastal Matagorda-Colorado-Fort Bend-
Galveston Island and Bolivar Peninsula-Grimes-Houston-
Inland Brazoria-Inland Galveston-Inland Harris-Inland Jackson-
Inland Matagorda-Madison-Matagorda Islands-Montgomery-
Northern Liberty-Polk-San Jacinto-Southern Liberty-Trinity-Walker-
Waller-Washington-Wharton-
527 AM CDT Sat Apr 6 2019

This hazardous weather outlook is for portions of Southeast Texas..

.DAY ONE...Today and Tonight

There is a slight risk of severe weather along and north of a
Columbus to Livingston line. There is an enhanced risk of severe
weather along and north of a Bryan to Lufkin line. The main
threats will damaging straight line winds and hail from a line of
storms. A brief tornado cannot be ruled out. There is also a
threat for heavy rainfall over the same area as the enhanced
severe weather risk.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

There is a slight risk of severe weather for all of the area on
Sunday. Again the main threats will be damaging winds and hail but
a brief tornado may still be possible. There is a higher risk for
heavy rainfall and flooding over the area on Sunday. Most areas
could get 2 inches of rainfall or more from storms moving across
the area.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed today and Sunday.

GMZ330-335-350-355-370-375-071030-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
Galveston Bay-Matagorda Bay-
Waters from Freeport to Matagorda Ship Channel TX from 20 to
60 NM-Waters from High Island to Freeport TX from 20 to 60 NM-
527 AM CDT Sat Apr 6 2019

This hazardous weather outlook is for portions of Southeast Texas..

.DAY ONE...Today and Tonight

Dense sea fog will be possible this morning through tonight.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

The threat for sea fog will continue into Sunday and Monday.
Thunderstorm activity will be more numerous Sunday with the
potential for severe weather along the coast and through the bays.
Damaging winds will be the main threat along with heavy rainfall.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed today and Sunday.

In the hours before

Special weather statement, Apr 6, 8:43 AM CDT, 1 hour 16 minutes before
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Special weather statement, Apr 6, 9:40 AM CDT, 19 minutes before
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Special weather statement, Apr 6, 9:47 AM CDT, 12 minutes before
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Special weather statement, Apr 6, 9:50 AM CDT, 9 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Apr 5, 7:36 PM CDTDense Fog AdvisoryHGXBrazoria, Galveston, Jackson, Matagorda17 hr
Apr 6, 8:43 AM CDTSpecial Weather StatementHGXPolk47 min
Apr 6, 9:40 AM CDTSpecial Weather StatementHGXBurleson, Washington50 min
Apr 6, 9:47 AM CDTSpecial Weather StatementHGXGrimes, Walker43 min
Apr 6, 9:50 AM CDTSpecial Weather StatementHGXWalker25 min
Apr 6, 9:56 AM CDTSevere Thunderstorm WarningHGXBrazos, Burleson, Grimes, Washington34 min
Apr 6, 10:01 AM CDTSevere Thunderstorm WarningHGXMontgomery, Walker29 min
Apr 6, 10:27 AM CDTSpecial Weather StatementHGXSan Jacinto33 min
Apr 6, 10:34 AM CDTSpecial Weather StatementHGXBrazos26 min
Apr 6, 10:36 AM CDTSpecial Weather StatementHGXPolk24 min
Apr 6, 10:38 AM CDTSpecial Weather StatementHGXWalker52 min
Apr 6, 10:41 AM CDTSpecial Weather StatementHGXPolk49 min
Apr 6, 11:03 AM CDTSpecial Weather StatementHGXSan Jacinto27 min
Apr 6, 11:06 AM CDTSevere Thunderstorm WarningHGXHouston, Madison, Trinity, Walker39 min
Apr 6, 11:10 AM CDTMarine Dense Fog AdvisoryHGX64 min
Apr 6, 11:28 AM CDTSpecial Weather StatementHGXTrinity47 min
Apr 6, 4:03 PM CDTSpecial Weather StatementHGXBurleson27 min
Apr 6, 4:30 PM CDTSevere Thunderstorm WarningHGXBurleson30 min
Apr 6, 5:01 PM CDTSevere Thunderstorm WarningHGXBrazos, Burleson14 min
Apr 6, 5:20 PM CDTSpecial Weather StatementHGXBrazos55 min
Apr 6, 5:29 PM CDTSevere Thunderstorm WarningHGXBrazos31 min
Apr 6, 5:34 PM CDTSpecial Weather StatementHGXBurleson41 min
Apr 6, 5:39 PM CDTSevere Thunderstorm WarningHGXHouston36 min
Apr 6, 5:42 PM CDTTornado WarningHGXBrazos, Madison33 min
Apr 6, 5:47 PM CDTSevere Thunderstorm WarningHGXBurleson28 min
Apr 6, 5:55 PM CDTTornado WarningHGXHouston20 min
Apr 6, 6:02 PM CDTTornado WarningHGXMadison28 min
Apr 6, 6:17 PM CDTSevere Thunderstorm WarningHGXHouston13 min
Apr 6, 6:28 PM CDTTornado WarningHGXHouston, Madison32 min
Apr 6, 6:32 PM CDTSpecial Weather StatementHGXMadison28 min
Apr 6, 6:35 PM CDTSevere Thunderstorm WarningHGXBrazos, Grimes, Madison25 min
Apr 6, 6:59 PM CDTSevere Thunderstorm WarningHGXHouston, Madison46 min

Nearby

Severe Thunderstorm Warnings in Texas, 2019Every severe thunderstorm warning in 2019

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.