Alert archive / Texas / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 56, NWS Houston/Galveston, TX

May 13, 2016Brazoria County, Galveston County, Harris County, Texas

NWS Houston/Galveston, TX issued this severe thunderstorm warning at May 13, 2016, 4:41 PM CDT for Brazoria County, Galveston County, Harris County, Texas. It was in force for 34 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 13, 2016, 4:41 PM CDT (21:41 UTC)
Expired: May 13, 2016, 5:15 PM CDT
In force: 34 min
Issued by: NWS Houston/Galveston, TX
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Brazoria County, TX, Galveston County, TX, Harris County, TX

The radar

The Houston radar (KHGX), 13 km from the middle of the area, began a volume at 21:43 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

Corpus Christi, TX (KCRP), launched 12:00Z, 9.7 hours before the alert went out and 282 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1708 J/kg
Mixed-layer CIN: -20 J/kg
Mixed-layer LCL: 686 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: -38 m²/s²
0-3 km storm-relative helicity: 7 m²/s²
Significant tornado parameter: -0.1
Supercell composite: -0.5

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 13, 3:15 PM CDT, 1 hour 26 minutes earlier.

Area forecast discussion, May 13, 3:15 PM CDT, 1 hour 26 minutes before

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Hazardous weather outlook, May 13, 5:21 AM CDT, 11 hours 20 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
521 AM CDT FRI MAY 13 2016

TXZ163-164-176>179-195>200-210>214-226-227-235>238-141030-
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-
521 AM CDT FRI MAY 13 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST TEXAS.

.DAY ONE...TODAY AND TONIGHT
AN ISOLATED STRONG TO SEVERE THUNDERSTORM WILL BE POSSIBLE THIS
AFTERNOON AND EVENING GENERALLY ALONG AND SOUTH OF A BRENHAM TO
CLEVELAND LINE. GUSTY WINDS... HAIL... AND BRIEF HEAVY RAINFALL
WILL BE POSSIBLE WITH STRONGER STORMS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY
WIDESPREAD THUNDERSTORM CHANCES RETURN TO THE REGION SATURDAY
THROUGH THURSDAY. SOME OF THESE THUNDERSTORMS MAY BE CAPABLE OF
LOCALLY HEAVY RAINFALL.

STRONG TO POTENTIALLY SEVERE THUNDERSTORMS WILL BE POSSIBLE
SATURDAY AFTERNOON AND NIGHT ACROSS SOUTHEAST TEXAS... WITH STORMS
CAPABLE OF LARGE HAIL AND DAMAGING WINDS OM ADDITION TO LOCALLY
HEAVY RAIN.

.SPOTTER INFORMATION STATEMENT...
SPOTTERS ARE ENCOURAGED TO REPORT SEVERE WEATHER OR FLOODING
REPORTS TO THE NATIONAL WEATHER SERVICE.

GMZ330-335-350-355-370-375-141030-
COASTAL WATERS FROM FREEPORT TO THE MATAGORDA SHIP CHANNEL OUT
20 NM-COASTAL WATERS FROM HIGH ISLAND TO FREEPORT OUT 20 NM-
GALVESTON BAY-MATAGORDA BAY-
WATERS FROM FREEPORT TO THE MATAGORDA SHIP CHANNEL FROM 20 TO
60 NM-WATERS FROM HIGH ISLAND TO FREEPORT FROM 20 TO 60 NM-
521 AM CDT FRI MAY 13 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST TEXAS.

.DAY ONE...TODAY AND TONIGHT
NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY
MODERATE TO OCCASIONALLY STRONG ONSHORE WINDS ARE EXPECTED SUNDAY
THROUGH WEDNESDAY... AND SMALL CRAFT ADVISORIES MAY BE NEEDED.
ELEVATED TIDES AND AN INCREASED RISK FOR RIP CURRENTS MAY ALSO
OCCUR DURING THIS TIME ALONG THE UPPER TEXAS COAST.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL NOT BE NEEDED.

In the hours before

Local storm report, May 13, 3:02 PM CDT, 1 hour 39 minutes before

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Special weather statement, May 13, 3:07 PM CDT, 1 hour 34 minutes before

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Special weather statement, May 13, 4:19 PM CDT, 22 minutes before

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Local storm report, May 13, 4:36 PM CDT, 5 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 12, 7:53 PM CDT	Special Weather Statement	HGX	Harris	52 min
May 12, 7:59 PM CDT	Severe Thunderstorm Warning	HGX	Harris	31 min
May 12, 8:14 PM CDT	Areal Flood Advisory	HGX	Harris	61 min
May 12, 8:38 PM CDT	Special Weather Statement	HGX	Fort Bend	37 min
May 12, 9:30 PM CDT	Areal Flood Advisory	HGX	Fort Bend, Harris, Wharton	2 hr
May 13, 2:11 PM CDT	Severe Thunderstorm Warning	HGX	Brazoria	49 min
May 13, 2:46 PM CDT	Severe Thunderstorm Warning	HGX	Brazoria, Matagorda	29 min
May 13, 3:07 PM CDT	Special Weather Statement	HGX	Brazoria	38 min
May 13, 4:19 PM CDT	Special Weather Statement	HGX	Fort Bend	41 min
May 13, 4:40 PM CDT	Areal Flood Advisory	HGX	Brazoria, Fort Bend, Galveston, Harris	2 hr
May 13, 5:02 PM CDT	Special Weather Statement	HGX	Fort Bend	43 min
May 13, 5:25 PM CDT	Special Weather Statement	HGX	Harris	50 min
May 13, 5:29 PM CDT	Special Weather Statement	HGX	Jackson	46 min
May 13, 5:41 PM CDT	Areal Flood Advisory	HGX	Harris	2 hr
May 13, 5:47 PM CDT	Special Weather Statement	HGX	Harris	43 min
May 13, 6:04 PM CDT	Special Weather Statement	HGX	Jackson	26 min
May 13, 6:34 PM CDT	Special Weather Statement	HGX	Chambers	26 min

Nearby

Severe Thunderstorm Warnings in Texas, 2016 Every severe thunderstorm warning in 2016

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.