Alert archive / Texas / Flash Flood Warnings in 2026

Flash Flood Warning 12, NWS Houston/Galveston, TX

June 15, 2026Jackson County, Texas

NWS Houston/Galveston, TX issued this flash flood warning at Jun 15, 2026, 11:15 PM CDT for Jackson County, Texas. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 15, 2026, 11:15 PM CDT (04:15 UTC)
Expired: Jun 16, 2026, 2:15 AM CDT
In force: 3 hr
Issued by: NWS Houston/Galveston, TX
Area: Storm-based polygon
Flood severity: None

County Jackson County, TX

The radar

The Houston radar (KHGX), 156 km from the middle of the area, began a volume at 04:19 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, 4.3 hours before the alert went out and 155 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: 776 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 650 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 124 m²/s²
0-3 km storm-relative helicity: 145 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 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 Jun 15, 7:18 PM CDT, 3 hours 57 minutes earlier.

Area forecast discussion, Jun 15, 7:18 PM CDT, 3 hours 57 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
Jun 15, 9:58 PM CDT	Areal Flood Advisory	HGX	Chambers	3 hr
Jun 15, 10:10 PM CDT	Areal Flood Advisory	HGX	Brazoria, Fort Bend, Jackson, Matagorda, Wharton	3 hr
Jun 15, 10:31 PM CDT	River Flood Warning	HGX	Brazoria, Fort Bend, Wharton	32 hr
Jun 16, 1:59 AM CDT	Special Marine Warning	HGX		61 min
Jun 16, 2:28 AM CDT	River Flood Warning	HGX	Matagorda, Wharton	32 hr
Jun 16, 2:41 AM CDT	Special Marine Warning	HGX		64 min
Jun 16, 2:55 AM CDT	Special Marine Warning	HGX		65 min
Jun 16, 3:45 AM CDT	Special Marine Warning	HGX		60 min
Jun 16, 4:23 AM CDT	Flash Flood Warning	HGX	Jackson	3 hr
Jun 16, 7:35 AM CDT	Areal Flood Warning	HGX	Jackson	85 min
Jun 16, 8:07 AM CDT	Areal Flood Advisory	HGX	Montgomery, San Jacinto, Walker	3 hr
Jun 16, 9:24 AM CDT	Areal Flood Advisory	HGX	Grimes, Harris, Montgomery, Waller	3 hr
Jun 16, 9:41 AM CDT	Flash Flood Warning	HGX	Montgomery	5 hr
Jun 16, 9:46 AM CDT	Areal Flood Advisory	HGX	Colorado	3 hr
Jun 16, 9:56 AM CDT	Areal Flood Advisory	HGX	Harris, Liberty, Montgomery, San Jacinto, Waller	3 hr
Jun 16, 10:22 AM CDT	River Flood Warning	HGX	Brazoria	16 hr
Jun 16, 10:28 AM CDT	Small Craft Advisory	HGX		47 hr
Jun 16, 10:28 AM CDT	Tropical Storm Watch	HGX	Brazoria, Chambers, Galveston, Matagorda	25 hr
Jun 16, 10:31 AM CDT	Flash Flood Warning Considerable damage threat	HGX	Harris, Montgomery	4 hr
Jun 16, 10:32 AM CDT	Coastal Flood Warning	HGX	Galveston	32 hr
Jun 16, 10:32 AM CDT	Coastal Flood Advisory	HGX	Brazoria, Galveston, Matagorda	40 hr
Jun 16, 10:49 AM CDT	Flash Flood Warning	HGX	Harris, Montgomery, Waller	3 hr
Jun 16, 11:08 AM CDT	Flash Flood Warning	HGX	Liberty, Montgomery, San Jacinto	2 hr
Jun 16, 11:33 AM CDT	Areal Flood Advisory	HGX	Liberty, Polk, San Jacinto	3 hr
Jun 16, 12:02 PM CDT	Flash Flood Warning	HGX	Harris	2 hr
Jun 16, 2:14 PM CDT	Areal Flood Warning	HGX	Harris, Montgomery, Waller	3 hr
Jun 16, 2:57 PM CDT	Areal Flood Advisory	HGX	Chambers	3 hr
Jun 16, 4:39 PM CDT	Tropical Storm Warning	HGX	Brazoria, Chambers, Galveston	27 hr
Jun 16, 4:59 PM CDT	Areal Flood Advisory	HGX	Brazos, Burleson	3 hr

Nearby

Flash Flood Warnings in Texas, 2026 Every flash flood warning in 2026

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.