Alert archive / Texas / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 23, NWS Houston/Galveston, TX

April 28, 20147 counties in Texas

NWS Houston/Galveston, TX issued this severe thunderstorm warning at Apr 28, 2014, 4:27 AM CDT for 7 counties in Texas. It was in force for 48 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 28, 2014, 4:27 AM CDT (09:27 UTC)
Expired
Apr 28, 2014, 5:15 AM CDT
In force
48 min
Issued by
NWS Houston/Galveston, TX
Area
Storm-based polygon

Counties Austin County, TX, Brazos County, TX, Grimes County, TX, Harris County, TX, Montgomery County, TX, Waller County, TX, Washington County, TX

The radar

The Houston radar (KHGX), 120 km from the middle of the area, began a volume at 09:27 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

Fort Worth, TX (KFWD), launched 00:00Z, 9.5 hours before the alert went out and 317 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 00:00Z on 2014-04-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 00:00Z on 2014-04-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 72 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
4165 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
72 m²/s²
0-3 km storm-relative helicity
91 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 Apr 28, 4:21 AM CDT, 6 minutes earlier.

Area forecast discussion, Apr 28, 4:21 AM CDT, 6 minutes before
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Hazardous weather outlook, Apr 27, 3:17 PM CDT, 13 hours 10 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
317 PM CDT SUN APR 27 2014

TXZ163-164-176>179-195>200-210>213-226-227-282030-
AUSTIN-BRAZOS-BURLESON-COLORADO-FORT BEND-GRIMES-HARRIS-HOUSTON-
LIBERTY-MADISON-MONTGOMERY-POLK-SAN JACINTO-TRINITY-WALKER-WALLER-
WASHINGTON-WHARTON-
317 PM CDT SUN APR 27 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST TEXAS.

.DAY ONE...THIS AFTERNOON AND TONIGHT

WE WILL BE MONITORING THE POSSIBILITY OF A FEW STRONG TO SEVERE
STORMS GENERALLY NORTH OF A COLLEGE STATION TO HUNTSVILLE TO
LIVINGSTON LINE TODAY. A WARM LAYER OF AIR ALOFT...OR CAP...WILL
BE A SIGNIFICANT LIMITING FACTOR. ANY ISOLATED STRONG CELLS THAT
DO MANAGE TO DEVELOP WILL BE CAPABLE OF PRODUCING WIND DAMAGE AND
HAIL.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED TODAY.

GMZ330-335-350-355-370-375-TXZ214-235>238-282030-
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-
317 PM CDT SUN APR 27 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST TEXAS.

.DAY ONE...THIS AFTERNOON AND TONIGHT

STRONG AND GUSTY WINDS NEAR THE COAST WILL CONTINUE THROUGH THIS
EVENING. A WIND ADVISORY HAS BEEN ISSUED UNTIL 7 PM THIS
AFTERNOON.

ELEVATED WINDS AND SEAS WILL PERSIST TODAY AND SMALL CRAFT SHOULD
EXERCISE CAUTION. HIGHER SURF WILL POSE AN INCREASED RISK FOR RIP
CURRENTS ALONG AREA BEACHES. SWIM NEAR A LIFEGUARD.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

SMALL CRAFT ADVISORIES MAY ALSO BE REQUIRED IN THE WAKE OF A
PASSING COLD FRONT TUESDAY NIGHT WITH MODERATE NORTHERLY WINDS IN
ITS WAKE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

In the hours before

Special weather statement, Apr 28, 1:33 AM CDT, 2 hours 54 minutes before
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Special weather statement, Apr 28, 2:52 AM CDT, 1 hour 35 minutes before
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Special weather statement, Apr 28, 4:20 AM CDT, 7 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Apr 27, 8:18 PM CDTSevere Thunderstorm WarningHGXWashington27 min
Apr 27, 8:44 PM CDTSevere Thunderstorm WarningHGXWashington31 min
Apr 27, 9:16 PM CDTSpecial Weather StatementHGXWaller29 min
Apr 28, 1:33 AM CDTSpecial Weather StatementHGXHouston42 min
Apr 28, 2:52 AM CDTSpecial Weather StatementHGXHouston, Madison53 min
Apr 28, 3:04 AM CDTSevere Thunderstorm WarningHGXHouston56 min
Apr 28, 3:58 AM CDTSevere Thunderstorm WarningHGXHouston47 min
Apr 28, 4:20 AM CDTSpecial Weather StatementHGXWashington40 min
Apr 28, 4:56 AM CDTSevere Thunderstorm WarningHGXHouston, Madison, Polk, Trinity, Walker49 min
Apr 28, 4:58 AM CDTSpecial Weather StatementHGXWalker47 min
Apr 28, 5:57 AM CDTSpecial Weather StatementHGXPolk33 min

Nearby

Severe Thunderstorm Warnings in Texas, 2014Every severe thunderstorm warning in 2014

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.