Alert archive / Texas / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 101, NWS Houston/Galveston, TX

May 28, 2020Brazoria County, Texas

NWS Houston/Galveston, TX issued this severe thunderstorm warning at May 28, 2020, 4:52 PM CDT for Brazoria County, Texas. It was in force for 38 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 28, 2020, 4:52 PM CDT (21:52 UTC)
Expired: May 28, 2020, 5:30 PM CDT
In force: 38 min
Issued by: NWS Houston/Galveston, TX
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

County Brazoria County, TX

The radar

The Houston radar (KHGX), 48 km from the middle of the area, began a volume at 21:53 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 12:00Z, 9.9 hours before the alert went out and 240 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: 117 J/kg
Mixed-layer CIN: -237 J/kg
Mixed-layer LCL: 1285 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 220 m²/s²
0-3 km storm-relative helicity: 239 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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 28, 3:47 PM CDT, 1 hour 5 minutes earlier.

Area forecast discussion, May 28, 3:47 PM CDT, 1 hour 5 minutes before

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In the hours before

Local storm report, May 28, 3:05 PM CDT, 1 hour 47 minutes before

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Local storm report, May 28, 3:18 PM CDT, 1 hour 34 minutes before

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Special weather statement, May 28, 3:30 PM CDT, 1 hour 22 minutes before

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Local storm report, May 28, 3:54 PM CDT, 58 minutes before

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Special weather statement, May 28, 4:02 PM CDT, 50 minutes before

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Local storm report, May 28, 4:51 PM CDT, 1 minute 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 27, 7:33 PM CDT	Special Weather Statement	HGX	Montgomery	42 min
May 27, 7:45 PM CDT	Special Weather Statement	HGX	Brazos	45 min
May 27, 8:04 PM CDT	Special Weather Statement	HGX	Burleson, Washington	41 min
May 27, 8:59 PM CDT	Special Weather Statement	HGX	Washington	46 min
May 27, 10:02 PM CDT	Special Weather Statement	HGX	Jackson	58 min
May 28, 12:15 AM CDT	Special Weather Statement	HGX	Washington	60 min
May 28, 1:04 AM CDT	Special Weather Statement	HGX	Burleson	41 min
May 28, 9:23 AM CDT	Rip Current Statement	HGX	Brazoria, Galveston, Matagorda	15 hr
May 28, 11:33 AM CDT	Special Weather Statement	HGX	Liberty	42 min
May 28, 11:47 AM CDT	Severe Thunderstorm Warning	HGX	Liberty	43 min
May 28, 12:04 PM CDT	Special Weather Statement	HGX	Chambers	41 min
May 28, 12:04 PM CDT	Tornado Warning	HGX	Liberty	26 min
May 28, 12:42 PM CDT	Special Marine Warning	HGX		63 min
May 28, 12:49 PM CDT	Severe Thunderstorm Warning	HGX	Chambers	26 min
May 28, 1:45 PM CDT	Special Marine Warning	HGX		45 min
May 28, 2:11 PM CDT	Special Weather Statement	HGX	Harris	49 min
May 28, 2:18 PM CDT	Special Weather Statement	HGX	Galveston	42 min
May 28, 2:27 PM CDT	Special Marine Warning	HGX		63 min
May 28, 2:44 PM CDT	Severe Thunderstorm Warning	HGX	Galveston	46 min
May 28, 2:51 PM CDT	Tornado Warning	HGX	Galveston	24 min
May 28, 3:16 PM CDT	Severe Thunderstorm Warning	HGX	Galveston	14 min
May 28, 3:30 PM CDT	Special Weather Statement	HGX	Galveston	60 min
May 28, 3:49 PM CDT	Special Marine Warning	HGX		86 min
May 28, 4:02 PM CDT	Special Weather Statement	HGX	Brazoria, Galveston	58 min
May 28, 5:56 PM CDT	Special Weather Statement	HGX	Matagorda	49 min
May 28, 6:53 PM CDT	Special Marine Warning	HGX		37 min

Nearby

Severe Thunderstorm Warnings in Texas, 2020 Every severe thunderstorm warning in 2020

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.