Alert archive / Texas / Flash Flood Warnings in 2024
Flash Flood Warning 46, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this flash flood warning at May 31, 2024, 6:31 AM CDT for Montgomery County, Walker County, Texas. It was in force for 4 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
- May 31, 2024, 6:31 AM CDT (11:31 UTC)
- Expired
- May 31, 2024, 10:08 AM CDT
- In force
- 4 hr
- Issued by
- NWS Houston/Galveston, TX
- Area
- Storm-based polygon
- Flood severity
- None
Counties Montgomery County, TX, Walker County, TX
The radar
The Houston radar (KHGX), 125 km from the middle of the area, began a volume at 11:30 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, 11.5 hours before the alert went out and 229 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
- 2455 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 990 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 21 m²/s²
- 0-3 km storm-relative helicity
- 81 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 2.6
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 31, 2:21 AM CDT, 4 hours 10 minutes earlier.
Area forecast discussion, May 31, 2:21 AM CDT, 4 hours 10 minutes before
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</html>In the hours before
Special weather statement, May 31, 5:32 AM CDT, 59 minutes before
Special Weather Statement
National Weather Service Houston/Galveston TX
532 AM CDT Fri May 31 2024
TXZ163-176-177-195>199-210>213-311100-
Madison TX-Walker TX-Brazos TX-Washington TX-Waller TX-Grimes TX-
Burleson TX-Colorado TX-Inland Harris TX-Montgomery TX-Houston TX-
Austin TX-
532 AM CDT Fri May 31 2024
...STRONG THUNDERSTORMS WILL IMPACT NORTH CENTRAL COLORADO...
AUSTIN...GRIMES...BURLESON...BRAZOS...WASHINGTON...WESTERN
MONTGOMERY...WESTERN HOUSTON...MADISON...NORTHERN WALLER...WALKER AND
NORTHWESTERN HARRIS COUNTIES THROUGH 600 AM CDT...
At 530 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 6 miles south of Lovelady to 7 miles south of
La Grange. Movement was southeast at around 45 mph.
HAZARD...Wind gusts of up to 55 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...
College Station, Bryan, western Conroe, Huntsville, Brenham,
Navasota, Crockett, Hempstead, Willis, Prairie View, Madisonville,
Caldwell, Bellville, Pinehurst, Austonio, The Woodlands, Washington,
Waller, Panorama Village, and Grapeland.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
A Severe Thunderstorm Watch remains in effect until 1100 AM CDT for
southeastern Texas.
&&
LAT...LON 3073 9662 3070 9656 3074 9646 3091 9635
3107 9605 3109 9577 3127 9573 3132 9566
3150 9574 3156 9549 3113 9543 3024 9549
2971 9657 2986 9666 2996 9657 3015 9665
3016 9679 3030 9664 3032 9674 3056 9696
TIME...MOT...LOC 1030Z 323DEG 41KT 3103 9547 2980 9687
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...50 MPH
Cotto (24)The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 30, 7:01 PM CDT | Severe Thunderstorm Warning | HGX | Brazos, Burleson, Grimes, Washington | 29 min |
| May 30, 7:12 PM CDT | Severe Thunderstorm Warning | HGX | Grimes, Montgomery, Polk, San Jacinto, Trinity, Walker | 33 min |
| May 30, 7:20 PM CDT | Areal Flood Advisory | HGX | Grimes, Montgomery, Walker | 3 hr |
| May 30, 7:45 PM CDT | Severe Thunderstorm Warning | HGX | Grimes, Montgomery | 30 min |
| May 30, 8:16 PM CDT | Special Weather Statement | HGX | Montgomery | 29 min |
| May 30, 8:47 PM CDT | Special Weather Statement | HGX | Harris | 28 min |
| May 30, 8:55 PM CDT | Areal Flood Advisory | HGX | Grimes, Harris, Montgomery | 114 min |
| May 30, 8:57 PM CDT | Severe Thunderstorm Warning | HGX | Chambers, Harris, Liberty, Montgomery | 33 min |
| May 30, 9:03 PM CDT | Special Marine Warning | HGX | 87 min | |
| May 30, 9:18 PM CDT | Areal Flood Warning | HGX | Montgomery, Walker | 10 hr |
| May 30, 10:12 PM CDT | Special Marine Warning | HGX | 63 min | |
| May 31, 2:53 AM CDT | Small Craft Advisory | HGX | 10 hr | |
| May 31, 4:36 AM CDT | Severe Thunderstorm Warning | HGX | Brazos, Burleson, Grimes, Houston, Madison, Montgomery and 3 more | 54 min |
| May 31, 5:32 AM CDT | Special Weather Statement | HGX | Austin, Brazos, Burleson, Grimes, Madison, Montgomery and 3 more | 28 min |
| May 31, 5:36 AM CDT | Severe Thunderstorm Warning | HGX | Brazos, Grimes, Houston, Madison, Montgomery, Walker | 24 min |
| May 31, 5:58 AM CDT | Severe Thunderstorm Warning | HGX | Austin, Brazos, Colorado, Grimes, Harris, Houston and 6 more | 47 min |
| May 31, 6:22 AM CDT | Severe Thunderstorm Warning | HGX | Austin, Colorado, Fort Bend, Harris, Houston, Montgomery and 6 more | 23 min |
| May 31, 6:41 AM CDT | Special Marine Warning | HGX | 2 hr | |
| May 31, 6:46 AM CDT | Severe Thunderstorm Warning | HGX | Brazoria, Fort Bend, Harris, Liberty, Montgomery, San Jacinto and 1 more | 29 min |
| May 31, 6:46 AM CDT | Severe Thunderstorm Warning | HGX | Jackson, Matagorda, Wharton | 29 min |
| May 31, 6:50 AM CDT | Severe Thunderstorm Warning | HGX | Brazoria, Galveston, Harris | 25 min |
| May 31, 6:53 AM CDT | Tornado Warning | HGX | Jackson, Matagorda, Wharton | 14 min |
| May 31, 7:12 AM CDT | Areal Flood Advisory | HGX | Harris | 3 hr |
| May 31, 7:15 AM CDT | Special Weather Statement | HGX | Brazoria, Fort Bend, Harris, Liberty, Matagorda | 30 min |
| May 31, 7:17 AM CDT | Severe Thunderstorm Warning | HGX | Jackson, Matagorda, Wharton | 28 min |
| May 31, 7:26 AM CDT | Severe Thunderstorm Warning | HGX | Brazoria, Galveston, Harris | 34 min |
| May 31, 7:42 AM CDT | Severe Thunderstorm Warning | HGX | Matagorda | 33 min |
| May 31, 7:47 AM CDT | Special Weather Statement | HGX | Austin, Brazoria, Chambers, Colorado, Fort Bend, Galveston and 10 more | 88 min |
| May 31, 7:47 AM CDT | Severe Thunderstorm Warning | HGX | Brazoria, Chambers, Galveston | 28 min |
| May 31, 7:55 AM CDT | Severe Thunderstorm Warning | HGX | Chambers, Galveston, Liberty | 65 min |
| May 31, 7:59 AM CDT | Severe Thunderstorm Warning | HGX | Brazoria, Matagorda | 31 min |
| May 31, 8:10 AM CDT | Special Marine Warning | HGX | 2 hr | |
| May 31, 8:11 AM CDT | Areal Flood Advisory | HGX | Harris, Montgomery | 2 hr |
| May 31, 8:12 AM CDT | Severe Thunderstorm Warning | HGX | Brazoria, Galveston | 33 min |
| May 31, 8:26 AM CDT | Areal Flood Advisory | HGX | Brazoria, Galveston, Harris | 3 hr |
| May 31, 8:34 AM CDT | Areal Flood Advisory | HGX | Galveston | 116 min |
| May 31, 8:40 AM CDT | Flash Flood Warning | HGX | Galveston | 113 min |
| May 31, 8:46 AM CDT | Areal Flood Advisory | HGX | Brazoria, Chambers, Galveston, Harris, Liberty | 119 min |
| May 31, 8:59 AM CDT | Areal Flood Advisory | HGX | Chambers, Galveston, Liberty | 2 hr |
| May 31, 9:07 AM CDT | Areal Flood Advisory | HGX | Colorado, Jackson, Matagorda, Wharton | 113 min |
| May 31, 9:19 AM CDT | River Flood Warning | HGX | Jackson, Wharton | 35 hr |
| May 31, 9:19 AM CDT | River Flood Warning | HGX | Matagorda, Wharton | 47 hr |
| May 31, 9:19 AM CDT | River Flood Warning | HGX | Brazoria, Fort Bend, Wharton | 11 hr |
| May 31, 10:08 AM CDT | Areal Flood Advisory | HGX | Montgomery, Walker | 2 hr |
| May 31, 10:14 AM CDT | Special Marine Warning | HGX | 91 min | |
| May 31, 10:33 AM CDT | Areal Flood Warning | HGX | Galveston | 2 hr |
| May 31, 2:13 PM CDT | Small Craft Advisory | HGX | 5 hr | |
| May 31, 3:48 PM CDT | River Flood Warning | HGX | Harris, Montgomery | 15 hr |
| May 31, 3:48 PM CDT | River Flood Warning | HGX | Liberty | 26 days |
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.