Alert archive / Texas / Flash Flood Warnings in 2021
Flash Flood Warning 27, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this flash flood warning at Jul 9, 2021, 8:52 AM CDT for Colorado County, Wharton County, Texas. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 9, 2021, 8:52 AM CDT (13:52 UTC)
- Expired
- Jul 9, 2021, 11:00 AM CDT
- In force
- 2 hr
- Issued by
- NWS Houston/Galveston, TX
- Area
- Storm-based polygon
- Flood severity
- None
Counties Colorado County, TX, Wharton County, TX
The radar
The Houston radar (KHGX), 125 km from the middle of the area, began a volume at 13:54 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 12:00Z, 1.9 hours before the alert went out and 196 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
- 994 J/kg
- Mixed-layer CIN
- -19 J/kg
- Mixed-layer LCL
- 646 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- -14 m²/s²
- 0-3 km storm-relative helicity
- 7 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
284
WGUS54 KHGX 091352
FFWHGX
TXC089-481-091600-
/O.NEW.KHGX.FF.W.0027.210709T1352Z-210709T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Houston/Galveston TX
852 AM CDT Fri Jul 9 2021
The National Weather Service in League City has issued a
* Flash Flood Warning for...
South Central Colorado County in southeastern Texas...
Central Wharton County in southeastern Texas...
* Until 1100 AM CDT.
* At 852 AM CDT, Doppler radar and automated rain gauges indicated
heavy rain falling across the warned area. Between 2 and 3 inches
of rain have fallen. Flash flooding is ongoing or expected to
begin shortly.
HAZARD...Flash flooding caused by heavy rain.
SOURCE...Doppler radar and automated gauges.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other
drainage and low lying areas.
* Some locations that will experience flash flooding include...
El Campo, Pierce, Louise, Egypt and Danevang.
Additional rainfall amounts of 1 to 2 inches are possible in the
warned area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, country roads, farmland, and other low lying
spots.
Please report flooding to your local law enforcement agency when you
can do so safely.
A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.
&&
LAT...LON 2929 9662 2936 9644 2948 9612 2947 9612
2905 9615 2903 9619 2911 9647
FLASH FLOOD...RADAR AND GAUGE INDICATED
$$The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 8, 9:18 PM CDT | River Flood Warning | HGX | Jackson, Wharton | 59 hr |
| Jul 8, 9:21 PM CDT | River Flood Warning | HGX | Brazoria | 5 days |
| Jul 9, 4:16 AM CDT | Rip Current Statement | HGX | Brazoria, Galveston, Matagorda | 21 hr |
| Jul 9, 5:22 AM CDT | Areal Flood Advisory | HGX | Colorado, Jackson, Matagorda, Wharton | 4 hr |
| Jul 9, 5:26 AM CDT | Areal Flood Advisory | HGX | Brazoria, Fort Bend, Matagorda | 4 hr |
| Jul 9, 6:27 AM CDT | Flash Flood Warning | HGX | Jackson, Matagorda, Wharton | 3 hr |
| Jul 9, 6:31 AM CDT | Areal Flood Advisory | HGX | Brazoria, Chambers, Fort Bend, Harris, Montgomery | 3 hr |
| Jul 9, 7:19 AM CDT | Areal Flood Advisory | HGX | Brazoria, Fort Bend, Matagorda, Wharton | 116 min |
| Jul 9, 7:45 AM CDT | River Flood Warning | HGX | Brazoria, Fort Bend, Wharton | 7 days |
| Jul 9, 8:40 AM CDT | Areal Flood Advisory | HGX | Harris, Montgomery | 65 min |
| Jul 9, 9:09 AM CDT | Flash Flood Warning | HGX | Jackson, Wharton | 3 hr |
| Jul 9, 9:33 AM CDT | River Flood Warning | HGX | Austin, Colorado, Fort Bend, Wharton | 4 days |
| Jul 9, 9:38 AM CDT | River Flood Warning | HGX | Jackson | 3 days |
| Jul 9, 9:45 AM CDT | River Flood Warning | HGX | Jackson, Lavaca | 64 hr |
| Jul 9, 9:46 AM CDT | River Flood Warning | HGX | Jackson | 3 days |
| Jul 9, 9:48 AM CDT | River Flood Warning | HGX | Jackson, Wharton | 44 hr |
| Jul 9, 9:48 AM CDT | River Flood Warning | HGX | Colorado, Jackson, Wharton | 47 hr |
| Jul 9, 11:10 AM CDT | Special Marine Warning | HGX | 95 min | |
| Jul 9, 11:11 AM CDT | Areal Flood Advisory | HGX | Colorado, Jackson | 64 min |
| Jul 9, 12:33 PM CDT | Special Weather Statement | HGX | Austin, Brazoria, Fort Bend | 42 min |
| Jul 9, 12:54 PM CDT | Special Marine Warning | HGX | 33 min | |
| Jul 9, 1:02 PM CDT | Areal Flood Warning | HGX | Jackson, Matagorda, Wharton | 3 hr |
| Jul 9, 1:22 PM CDT | Small Craft Advisory | HGX | 2 hr | |
| Jul 9, 1:49 PM CDT | Special Weather Statement | HGX | Galveston | 41 min |
| Jul 9, 1:52 PM CDT | Special Marine Warning | HGX | 38 min | |
| Jul 9, 2:29 PM CDT | Special Marine Warning | HGX | 23 min | |
| Jul 9, 3:01 PM CDT | Special Weather Statement | HGX | Liberty | 14 min |
| Jul 9, 6:35 PM CDT | River Flood Warning | HGX | Jackson, Lavaca | 39 hr |
Nearby
Flash Flood Warnings in Texas, 2021Every flash flood warning in 2021
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.