Alert archive / Texas / Flash Flood Warnings in 2019

Flash Flood Warning 21, NWS Houston/Galveston, TX

June 5, 20196 counties in Texas

NWS Houston/Galveston, TX issued this flash flood warning at Jun 5, 2019, 6:44 AM CDT for 6 counties in 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 outline as issued.

The facts

Issued
Jun 5, 2019, 6:44 AM CDT (11:44 UTC)
Expired
Jun 5, 2019, 9:45 AM CDT
In force
3 hr
Issued by
NWS Houston/Galveston, TX
Area
Storm-based polygon
Flood severity
None

Counties Austin County, TX, Brazoria County, TX, Fort Bend County, TX, Jackson County, TX, Matagorda County, TX, Wharton County, TX

The radar

The Houston radar (KHGX), 108 km from the middle of the area, began a volume at 11:44 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, 11.7 hours before the alert went out and 214 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-pSkew-T log-p diagram, Corpus Christi, TX at 00:00Z on 2019-06-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 912 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Corpus Christi, TX at 00:00Z on 2019-06-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -30 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
912 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
627 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
-30 m²/s²
0-3 km storm-relative helicity
8 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.6

Open this sounding in Storm Lab

The text

As transmitted.

999 
WGUS54 KHGX 051144
FFWHGX
TXC015-039-157-239-321-481-051445-
/O.NEW.KHGX.FF.W.0021.190605T1144Z-190605T1445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Houston/Galveston TX
644 AM CDT Wed Jun 5 2019

The National Weather Service in League City has issued a

* Flash Flood Warning for...
  Wharton County in southeastern Texas...
  Southeastern Austin County in southeastern Texas...
  East central Jackson County in south central Texas...
  Southwestern Fort Bend County in southeastern Texas...
  Western Brazoria County in southeastern Texas...
  Northwestern Matagorda County in southeastern Texas...

* Until 945 AM CDT.

* At 640 AM CDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Flash flooding is expected to 
  begin shortly. 4 to 5 inches of rain has fallen and another 1 to 2 
  inches of rain will be possible by 800 AM. The Wharton County 
  Sheriffs office reported high water at FM 1162 at County Road 422, 
  FM 1301 at County Road 157 and FM 1161 at County Road 131.

* Some locations that will experience flooding include...
  Rosenberg, Richmond, El Campo, Wharton, Needville, East Bernard,
  Wallis, Pleak, Simonton, Fairchilds, Beasley, Kendleton, Orchard,
  Thompsons, Pierce, Boling-Iago, Blessing, Markham, Cumings and
  southeastern Weston Lakes.

LAT...LON 2901 9646 2957 9625 2963 9618 2966 9621
      2975 9618 2951 9564 2882 9615

$$
1 follow-up statement
783 
WGUS74 KHGX 051407
FFSHGX

Flash Flood Statement
National Weather Service Houston/Galveston TX
907 AM CDT Wed Jun 5 2019

TXC015-039-157-239-321-481-051445-
/O.CON.KHGX.FF.W.0021.000000T0000Z-190605T1445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Wharton TX-Austin TX-Jackson TX-Fort Bend TX-Brazoria TX-
Matagorda TX-
907 AM CDT Wed Jun 5 2019

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 945 AM CDT FOR
WHARTON...SOUTHEASTERN AUSTIN...EAST CENTRAL JACKSON...SOUTHWESTERN
FORT BEND...WESTERN BRAZORIA AND NORTHWESTERN MATAGORDA COUNTIES...

At 903 AM CDT, emergency management reported flash flooding in and 
around the Wharton area. Numerous water rescues from vehicles are 
occuring and a few homes are beginning to take on water. 6 to 7 
inches of rain have fallen. Flash flooding is already occurring. 
Emergency officials are urging people to stay home until the flood 
threat has diminished. 

Some locations that will experience flooding include...
Rosenberg, Richmond, El Campo, Wharton, Needville, East Bernard,
Wallis, Pleak, Simonton, Fairchilds, Beasley, Kendleton, Orchard,
Thompsons, Pierce, Boling-Iago, Blessing, Markham, Cumings and
southeastern Weston Lakes.

Additional rainfall amounts of 1 to 3 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.

Stay away or be swept away. River banks and culverts can become
unstable and unsafe.

&&

LAT...LON 2901 9646 2957 9625 2963 9618 2966 9621
      2975 9618 2951 9564 2882 9615

$$

The office that day

Everything else NWS Houston/Galveston, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 5, 3:33 AM CDTAreal Flood AdvisoryHGXBrazoria, Fort Bend, Matagorda, Wharton57 min
Jun 5, 5:36 AM CDTAreal Flood AdvisoryHGXAustin, Brazoria, Fort Bend, Jackson, Matagorda, Wharton54 min
Jun 5, 6:36 AM CDTAreal Flood AdvisoryHGXAustin, Brazoria, Fort Bend, Jackson, Matagorda, Wharton114 min
Jun 5, 7:11 AM CDTAreal Flood AdvisoryHGXHarris, Liberty, Montgomery64 min
Jun 5, 7:47 AM CDTRiver Flood WarningHGXAustin, Colorado, Fort Bend, Wharton3 days
Jun 5, 7:47 AM CDTRiver Flood WarningHGXBrazoria7 days
Jun 5, 7:47 AM CDTRiver Flood WarningHGXBrazoria, Fort Bend, Wharton7 days
Jun 5, 7:55 AM CDTRiver Flood WarningHGXMatagorda, Wharton5 days
Jun 5, 7:55 AM CDTRiver Flood WarningHGXJackson, Wharton14 hr
Jun 5, 8:52 AM CDTAreal Flood AdvisoryHGXBrazos, Burleson, Grimes, Madison53 min
Jun 5, 9:49 AM CDTFlash Flood WarningHGXAustin, Brazoria, Colorado, Fort Bend, Jackson, Matagorda and 2 more3 hr
Jun 5, 11:09 AM CDTRip Current StatementHGXBrazoria, Galveston, Matagorda25 hr
Jun 5, 12:46 PM CDTAreal Flood WarningHGXAustin, Brazoria, Colorado, Fort Bend, Jackson, Matagorda and 2 more6 hr
Jun 5, 1:03 PM CDTAreal Flood AdvisoryHGXBrazoria57 min
Jun 5, 1:39 PM CDTTornado WarningHGXGalveston36 min
Jun 5, 2:26 PM CDTAreal Flood AdvisoryHGXBrazoria, Galveston64 min
Jun 5, 3:27 PM CDTAreal Flood AdvisoryHGXBrazoria, Galveston, Harris108 min
Jun 5, 4:44 PM CDTAreal Flood AdvisoryHGXChambers, Galveston2 hr
Jun 5, 5:01 PM CDTFlash Flood WarningHGXChambers, Galveston119 min

Nearby

Flash Flood Warnings in Texas, 2019Every flash flood warning in 2019

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.