Alert archive / Texas / Flash Flood Warnings in 2023

Flash Flood Warning 8, NWS Houston/Galveston, TX

May 10, 2023Jackson County, Matagorda County, Texas

NWS Houston/Galveston, TX issued this flash flood warning at May 10, 2023, 6:12 AM CDT for Jackson County, Matagorda County, Texas. It was in force for 101 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 10, 2023, 6:12 AM CDT (11:12 UTC)
Expired: May 10, 2023, 7:53 AM CDT
In force: 101 min
Issued by: NWS Houston/Galveston, TX
Area: Storm-based polygon
Flood severity: None

Counties Jackson County, TX, Matagorda County, TX

The radar

The Houston radar (KHGX), 135 km from the middle of the area, began a volume at 11:12 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 00:00Z, 11.2 hours before the alert went out and 163 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: 1175 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 876 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 173 m²/s²
0-3 km storm-relative helicity: 425 m²/s²
Significant tornado parameter: 2.3
Supercell composite: 19.6

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood 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 flash flood warning went out at May 10, 3:16 AM CDT, 2 hours 56 minutes earlier.

Area forecast discussion, May 10, 3:16 AM CDT, 2 hours 56 minutes before

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In the hours before

Special weather statement, May 10, 1:16 AM CDT, 4 hours 56 minutes before

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Special weather statement, May 10, 2:22 AM CDT, 3 hours 50 minutes before

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Special weather statement, May 10, 5:46 AM CDT, 26 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 10, 1:04 AM CDT	Special Marine Warning	HGX		41 min
May 10, 1:16 AM CDT	Special Weather Statement	HGX	Jackson	44 min
May 10, 2:22 AM CDT	Special Weather Statement	HGX	Matagorda	38 min
May 10, 4:39 AM CDT	Areal Flood Advisory	HGX	Jackson, Matagorda, Wharton	3 hr
May 10, 5:46 AM CDT	Special Weather Statement	HGX	Brazoria, Fort Bend	44 min
May 10, 5:52 AM CDT	Special Marine Warning	HGX		113 min
May 10, 5:54 AM CDT	Severe Thunderstorm Warning	HGX	Brazoria, Fort Bend, Matagorda	36 min
May 10, 6:29 AM CDT	Severe Thunderstorm Warning	HGX	Brazoria, Fort Bend, Galveston, Harris	46 min
May 10, 7:13 AM CDT	Special Weather Statement	HGX	Galveston	47 min
May 10, 7:39 AM CDT	Areal Flood Advisory	HGX	Brazoria, Fort Bend, Galveston, Harris	2 hr
May 10, 7:45 AM CDT	Special Weather Statement	HGX	Chambers	60 min
May 10, 7:55 AM CDT	Areal Flood Warning	HGX	Jackson, Matagorda	2 hr
May 10, 8:54 AM CDT	Special Marine Warning	HGX		75 min
May 10, 10:11 AM CDT	Special Marine Warning	HGX		64 min
May 10, 11:05 AM CDT	River Flood Warning	HGX	Jackson	7 days
May 10, 11:06 AM CDT	River Flood Warning	HGX	Jackson	45 hr
May 10, 1:38 PM CDT	Rip Current Statement	HGX	Brazoria, Galveston, Matagorda	13 hr

Nearby

Flash Flood Warnings in Texas, 2023 Every flash flood warning in 2023

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.