Alert archive / Texas / Flash Flood Warnings in 2026
Flash Flood Warning 21, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this flash flood warning at Jun 17, 2026, 7:34 AM CDT for Chambers County, Harris County, Liberty County, Texas. It was in force for 3 hr. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jun 17, 2026, 7:34 AM CDT (12:34 UTC)
- Expired
- Jun 17, 2026, 10:30 AM CDT
- In force
- 3 hr
- Issued by
- NWS Houston/Galveston, TX
- Area
- Storm-based polygon
- Flood severity
- None
Counties Chambers County, TX, Harris County, TX, Liberty County, TX
The radar
The Houston radar (KHGX), 35 km from the middle of the area, began a volume at 12:38 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 17, 8:40 AM CDT | FLASH FLOOD | 1 Ene Mont Belvieu, TX | Urban flooding continues on the east side of Houston near Mount Belvieu. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The text
As transmitted.
139
WGUS54 KHGX 171234
FFWHGX
TXC071-201-291-171530-
/O.NEW.KHGX.FF.W.0021.260617T1234Z-260617T1530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Houston/Galveston TX
734 AM CDT Wed Jun 17 2026
The National Weather Service in League City has issued a
* Flash Flood Warning for...
Northwestern Chambers County in southeastern Texas...
Harris County in southeastern Texas...
Southern Liberty County in southeastern Texas...
* Until 1030 AM CDT.
* At 734 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 3 inches of rain
have fallen. The expected rainfall rate is 2 to 4 inches in 1
hour. Additional rainfall amounts of 1 to 3 inches are possible in
the warned area. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Pasadena, Baytown, La Porte, Deer Park, South Houston, northern
Seabrook, Galena Park, Liberty, Dayton, Beach City, Barrett,
Highlands, Channelview, Cloverleaf, Kingwood, northern Clear Lake,
northeastern South Belt / Ellington, Crosby, Mont Belvieu and
Taylor Lake Village.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 2963 9522 3000 9522 3017 9497 2998 9452
2978 9461 2975 9470 2973 9477 2969 9479
2968 9480 2962 9489 2962 9494 2959 9494
2958 9503
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...2-4 INCHES IN 1 HOUR
$$
KLG1 follow-up statement
057
WGUS74 KHGX 171335
FFSHGX
Flash Flood Statement
National Weather Service Houston/Galveston TX
835 AM CDT Wed Jun 17 2026
TXC071-201-291-171530-
/O.CON.KHGX.FF.W.0021.000000T0000Z-260617T1530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Chambers TX-Harris TX-Liberty TX-
835 AM CDT Wed Jun 17 2026
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1030 AM CDT THIS
MORNING FOR NORTHWESTERN CHAMBERS, HARRIS AND SOUTHERN LIBERTY
COUNTIES...
At 835 AM CDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Between 2 and 3 inches of rain have
fallen. The expected rainfall rate is 1 to 2 inches in 1 hour.
Additional rainfall amounts of 0.5 to 2 inches are possible in the
warned area. Flash flooding is ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Pasadena, Baytown, La Porte, Deer Park, South Houston, northern
Seabrook, Galena Park, Liberty, Dayton, Beach City, Barrett,
Highlands, Channelview, Cloverleaf, Kingwood, northern Clear Lake,
northeastern South Belt / Ellington, Crosby, Mont Belvieu and
Taylor Lake Village.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 2963 9522 3000 9522 3017 9497 2998 9452
2978 9461 2975 9470 2973 9477 2969 9479
2968 9480 2962 9489 2962 9494 2959 9494
2958 9503
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...1-2 INCHES IN 1 HOUR
$$
KLGThe office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 16, 7:51 PM CDT | River Flood Warning | HGX | Hardin, Liberty, Polk | 24 hr |
| Jun 17, 3:22 AM CDT | Areal Flood Advisory | HGX | Brazoria, Galveston | 39 min |
| Jun 17, 4:01 AM CDT | Flash Flood Warning | HGX | Brazoria | 4 hr |
| Jun 17, 4:55 AM CDT | Flash Flood Warning | HGX | Brazoria | 3 hr |
| Jun 17, 7:08 AM CDT | Areal Flood Advisory | HGX | Brazoria, Chambers, Galveston, Harris, Liberty | 3 hr |
| Jun 17, 7:57 AM CDT | Areal Flood Warning | HGX | Brazoria | 4 hr |
| Jun 17, 8:03 AM CDT | Areal Flood Warning | HGX | Brazoria, Galveston | 4 hr |
| Jun 17, 8:39 AM CDT | Areal Flood Advisory | HGX | Brazoria | 3 hr |
| Jun 17, 10:14 AM CDT | River Flood Warning | HGX | Brazoria | 18 hr |
| Jun 17, 10:31 AM CDT | Areal Flood Warning | HGX | Chambers, Harris, Liberty | 89 min |
| Jun 17, 12:29 PM CDT | Heat Advisory | HGX | Austin, Brazoria, Brazos, Burleson, Chambers, Colorado and 17 more | 21 hr |
Nearby
Flash Flood Warnings in Texas, 2026Every 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; local storm reports from the same archive; radar from the NEXRAD Level II archive.