Alert archive / Texas / Flash Flood Warnings in 2024
Flash Flood Warning 15, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this flash flood warning at Apr 29, 2024, 12:37 AM CDT for Walker 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
- Apr 29, 2024, 12:37 AM CDT (05:37 UTC)
- Expired
- Apr 29, 2024, 3:45 AM CDT
- In force
- 3 hr
- Issued by
- NWS Houston/Galveston, TX
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Flood severity
- None
County Walker County, TX
The radar
The Houston radar (KHGX), 149 km from the middle of the area, began a volume at 05:39 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 00:00Z, 5.6 hours before the alert went out and 238 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.
- Mixed-layer CAPE
- 1624 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 792 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 87 m²/s²
- 0-3 km storm-relative helicity
- 111 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 5.8
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 Apr 29, 12:35 AM CDT, 2 minutes earlier.
Area forecast discussion, Apr 29, 12:35 AM CDT, 2 minutes before
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Local storm report, Apr 28, 11:10 PM CDT, 1 hour 27 minutes before
Preliminary Local Storm Report
National Weather Service Houston/Galveston TX
1110 PM CDT Sun Apr 28 2024
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1040 PM Flash Flood 4 E Groveton 31.06N 95.06W
04/28/2024 Trinity TX Law Enforcement
Flash Flooding reported on County Rd 2262.
&&
BBSpecial weather statement, Apr 28, 11:12 PM CDT, 1 hour 25 minutes before
Special Weather Statement
National Weather Service Houston/Galveston TX
1112 PM CDT Sun Apr 28 2024
TXZ164-177>179-290445-
San Jacinto TX-Walker TX-Polk TX-Trinity TX-
1112 PM CDT Sun Apr 28 2024
...STRONG THUNDERSTORMS WILL CONTINUE TO IMPACT SOUTHERN
TRINITY...SAN JACINTO... POLK AND SOUTHEASTERN WALKER COUNTIES
THIS EVENING...
At 1110 PM CDT, Doppler radar was tracking a cluster of strong
thunderstorms over portions of Walker, Trinity, Polk, San Jacinto,
and Polk counties.
HAZARD...Wind gusts up to 50 mph and pea size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.
Locations impacted include...
Livingston, Onalaska, Corrigan, Coldspring, Point Blank, Riverside,
Goodrich, Seven Oaks, Sebastopol, Lake Livingston State Park,
Alabama-Coushatta Reservation, West Livingston, Leggett, Moscow,
Oakhurst, and Evergreen.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
A Tornado Watch remains in effect until 100 AM CDT for southeastern
Texas.
&&
LAT...LON 3041 9524 3058 9545 3089 9544 3102 9508
3109 9465 3108 9463 3109 9462 3108 9461
3107 9459 3105 9459 3101 9466 3074 9460
TIME...MOT...LOC 0410Z 248DEG 38KT 3084 9494
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...50 MPH
SelfLocal storm report, Apr 28, 11:17 PM CDT, 1 hour 20 minutes before
Preliminary Local Storm Report
National Weather Service Houston/Galveston TX
1117 PM CDT Sun Apr 28 2024
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1040 PM Flash Flood 10 NNE Groveton 31.19N 95.06W
04/28/2024 Trinity TX Law Enforcement
Flash Flooding reported on County Rd 233.
&&
BBLocal storm report, Apr 28, 11:26 PM CDT, 1 hour 11 minutes before
Preliminary Local Storm Report
National Weather Service Houston/Galveston TX
1126 PM CDT Sun Apr 28 2024
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1040 PM Flash Flood 1 S College Station 30.61N 96.33W
04/28/2024 Brazos TX Public
Social media post showed flash flooding
along Wolf Pen Creek in College Station.
Surrounding areas inundated with water.
&&
BBLocal storm report, Apr 28, 11:36 PM CDT, 1 hour 1 minute before
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</html>The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 28, 7:14 PM CDT | Tornado Warning | HGX | Houston, Madison | 31 min |
| Apr 28, 7:22 PM CDT | Flash Flood Warning | HGX | Brazos, Grimes, Houston, Madison | 83 min |
| Apr 28, 7:33 PM CDT | Severe Thunderstorm Warning | HGX | Houston, San Jacinto, Trinity, Walker | 27 min |
| Apr 28, 7:41 PM CDT | Severe Thunderstorm Warning | HGX | Grimes, Madison, Walker | 34 min |
| Apr 28, 7:56 PM CDT | Severe Thunderstorm Warning | HGX | Houston, Trinity | 34 min |
| Apr 28, 8:00 PM CDT | Severe Thunderstorm Warning | HGX | Houston, Madison, Walker | 30 min |
| Apr 28, 8:06 PM CDT | Areal Flood Advisory | HGX | Houston, San Jacinto, Trinity, Walker | 114 min |
| Apr 28, 8:16 PM CDT | Severe Thunderstorm Warning | HGX | Grimes, Houston, Madison, Walker | 29 min |
| Apr 28, 8:29 PM CDT | Severe Thunderstorm Warning | HGX | Houston, San Jacinto, Trinity, Walker | 46 min |
| Apr 28, 8:30 PM CDT | Severe Thunderstorm Warning | HGX | Brazos, Grimes, Madison, Walker | 45 min |
| Apr 28, 8:41 PM CDT | Flash Flood Warning | HGX | Brazos, Burleson, Grimes, Madison, Walker | 5 hr |
| Apr 28, 8:42 PM CDT | Severe Thunderstorm Warning | HGX | Houston, Madison, Walker | 48 min |
| Apr 28, 8:50 PM CDT | Flash Flood Warning | HGX | San Jacinto, Trinity | 4 hr |
| Apr 28, 9:13 PM CDT | Severe Thunderstorm Warning | HGX | Polk, San Jacinto, Trinity, Walker | 32 min |
| Apr 28, 9:21 PM CDT | Flash Flood Warning | HGX | Houston, Madison, Trinity, Walker | 5 hr |
| Apr 28, 9:26 PM CDT | Severe Thunderstorm Warning | HGX | Houston, Madison, Trinity, Walker | 34 min |
| Apr 28, 9:47 PM CDT | Severe Thunderstorm Warning | HGX | Polk, San Jacinto, Trinity, Walker | 43 min |
| Apr 28, 10:21 PM CDT | Flash Flood Warning | HGX | Trinity | 3 hr |
| Apr 28, 10:22 PM CDT | Severe Thunderstorm Warning | HGX | Polk, San Jacinto, Trinity | 38 min |
| Apr 28, 10:45 PM CDT | Special Weather Statement | HGX | Grimes | 30 min |
| Apr 28, 11:02 PM CDT | Severe Thunderstorm Warning | HGX | Grimes, Montgomery, Walker | 28 min |
| Apr 28, 11:10 PM CDT | River Flood Warning | HGX | Polk, San Jacinto, Trinity, Walker | 28 days |
| Apr 28, 11:12 PM CDT | Special Weather Statement | HGX | Polk, San Jacinto | 33 min |
| Apr 28, 11:29 PM CDT | Flash Flood Warning | HGX | Grimes, Montgomery, San Jacinto, Trinity, Walker | 5 hr |
| Apr 28, 11:29 PM CDT | Severe Thunderstorm Warning | HGX | Grimes, Montgomery, Walker | 46 min |
| Apr 28, 11:34 PM CDT | Severe Thunderstorm Warning | HGX | Polk, San Jacinto, Trinity | 41 min |
| Apr 28, 11:56 PM CDT | Flash Flood Warning | HGX | Polk, Trinity | 3 hr |
| Apr 29, 12:15 AM CDT | Severe Thunderstorm Warning | HGX | Polk, San Jacinto, Trinity | 30 min |
| Apr 29, 12:21 AM CDT | Severe Thunderstorm Warning | HGX | Montgomery, San Jacinto, Trinity, Walker | 39 min |
| Apr 29, 12:43 AM CDT | Severe Thunderstorm Warning | HGX | Polk, San Jacinto | 47 min |
| Apr 29, 12:55 AM CDT | Severe Thunderstorm Warning | HGX | Polk | 35 min |
| Apr 29, 1:09 AM CDT | Areal Flood Warning | HGX | Polk, San Jacinto, Trinity, Walker | 9 hr |
| Apr 29, 1:18 AM CDT | Special Weather Statement | HGX | Walker | 87 min |
| Apr 29, 1:31 AM CDT | Special Weather Statement | HGX | Polk, San Jacinto | 74 min |
| Apr 29, 1:31 AM CDT | Severe Thunderstorm Warning | HGX | Polk, San Jacinto, Trinity, Walker | 29 min |
| Apr 29, 1:42 AM CDT | Flash Flood Warning | HGX | Polk, San Jacinto | 3 hr |
| Apr 29, 1:47 AM CDT | Severe Thunderstorm Warning | HGX | Polk, San Jacinto, Trinity | 43 min |
| Apr 29, 2:10 AM CDT | Areal Flood Warning | HGX | Brazos, Burleson, Grimes, Houston, Madison, Trinity and 1 more | 8 hr |
| Apr 29, 2:24 AM CDT | Severe Thunderstorm Warning | HGX | Liberty, Montgomery | 36 min |
| Apr 29, 2:32 AM CDT | Flash Flood Warning | HGX | Liberty, Montgomery, San Jacinto, Walker | 3 hr |
| Apr 29, 2:38 AM CDT | River Flood Warning | HGX | Chambers, Liberty | 60 days |
| Apr 29, 2:38 AM CDT | River Flood Warning | HGX | Polk, San Jacinto | 35 hr |
| Apr 29, 2:38 AM CDT | River Flood Warning | HGX | Madison, Walker | 42 hr |
| Apr 29, 2:38 AM CDT | River Flood Warning | HGX | Hardin, Liberty, Polk | 71 hr |
| Apr 29, 2:49 AM CDT | Special Marine Warning | HGX | 26 min | |
| Apr 29, 3:01 AM CDT | Special Weather Statement | HGX | Liberty, San Jacinto | 59 min |
| Apr 29, 3:07 AM CDT | Special Weather Statement | HGX | Chambers | 23 min |
| Apr 29, 3:38 AM CDT | Severe Thunderstorm Warning | HGX | Chambers, Liberty | 37 min |
| Apr 29, 3:49 AM CDT | Tornado Warning | HGX | Chambers, Liberty | 26 min |
| Apr 29, 3:56 AM CDT | Special Marine Warning | HGX | 49 min | |
| Apr 29, 3:56 AM CDT | Special Weather Statement | HGX | Chambers | 34 min |
| Apr 29, 4:02 AM CDT | Severe Thunderstorm Warning | HGX | Galveston, Harris | 28 min |
| Apr 29, 4:03 AM CDT | Flash Flood Warning | HGX | Chambers, Harris, Liberty | 3 hr |
| Apr 29, 4:07 AM CDT | Tornado Warning | HGX | Galveston, Harris | 23 min |
| Apr 29, 4:12 AM CDT | Tornado Warning | HGX | Chambers, Liberty | 30 min |
| Apr 29, 4:34 AM CDT | Severe Thunderstorm Warning | HGX | Chambers, Harris | 41 min |
| Apr 29, 4:38 AM CDT | Special Marine Warning | HGX | 67 min | |
| Apr 29, 4:40 AM CDT | Severe Thunderstorm Warning | HGX | Chambers, Liberty | 20 min |
| Apr 29, 4:50 AM CDT | Flash Flood Warning | HGX | Chambers | 3 hr |
| Apr 29, 4:56 AM CDT | Severe Thunderstorm Warning | HGX | Brazoria, Galveston | 34 min |
| Apr 29, 4:58 AM CDT | Severe Thunderstorm Warning | HGX | Chambers, Liberty | 32 min |
| Apr 29, 5:04 AM CDT | Special Marine Warning | HGX | 86 min | |
| Apr 29, 5:17 AM CDT | Special Weather Statement | HGX | Chambers | 28 min |
| Apr 29, 5:26 AM CDT | Special Weather Statement | HGX | Chambers, Galveston | 49 min |
| Apr 29, 5:30 AM CDT | Severe Thunderstorm Warning | HGX | Chambers, Galveston | 15 min |
| Apr 29, 5:32 AM CDT | Severe Thunderstorm Warning | HGX | Galveston | 13 min |
| Apr 29, 5:38 AM CDT | Areal Flood Advisory | HGX | Galveston | 112 min |
| Apr 29, 5:43 AM CDT | Special Marine Warning | HGX | 47 min | |
| Apr 29, 5:57 AM CDT | Special Marine Warning | HGX | 33 min | |
| Apr 29, 6:09 AM CDT | Flash Flood Warning | HGX | Galveston | 3 hr |
| Apr 29, 6:16 AM CDT | Special Marine Warning | HGX | 44 min | |
| Apr 29, 6:56 AM CDT | Special Marine Warning | HGX | 34 min | |
| Apr 29, 7:05 AM CDT | Special Marine Warning | HGX | 55 min | |
| Apr 29, 7:19 AM CDT | Special Marine Warning | HGX | 41 min | |
| Apr 29, 7:46 AM CDT | Special Marine Warning | HGX | 29 min | |
| Apr 29, 8:09 AM CDT | Special Marine Warning | HGX | 66 min | |
| Apr 29, 9:00 AM CDT | Special Marine Warning | HGX | 30 min | |
| Apr 29, 9:21 AM CDT | Special Marine Warning | HGX | 24 min | |
| Apr 29, 9:54 AM CDT | Special Marine Warning | HGX | 51 min | |
| Apr 29, 10:00 AM CDT | Areal Flood Warning | HGX | Polk, San Jacinto, Trinity, Walker | 2 hr |
Nearby
Flash Flood Warnings in Texas, 2024Every flash flood warning in 2024
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.