Alert archive / Texas / Flash Flood Warnings in 2017

Flash Flood Warning 2, NWS Brownsville, TX

April 11, 2017Jim Hogg County, Texas

NWS Brownsville, TX issued this flash flood warning at Apr 11, 2017, 8:52 PM CDT for Jim Hogg County, Texas. It was in force for 83 min. 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: Apr 11, 2017, 8:52 PM CDT (01:52 UTC)
Expired: Apr 11, 2017, 10:15 PM CDT
In force: 83 min
Issued by: NWS Brownsville, TX
Area: Storm-based polygon
Flood severity: None

County Jim Hogg County, TX

The radar

The Corpus Christi radar (KCRP), 123 km from the middle of the area, began a volume at 01:52 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
Apr 11, 9:20 PM CDT	FLASH FLOOD	Hebbronville, TX	JIM HOGG COUNTY SHERIFFS OFFICE REPORTS FLOODING AT INTERSECTIONS OF LINAR AND MESQUITE... EAST AND WEST VIGGIE... AND NORTH AND SOUTH SMITH IN HEBBRONVILLE. FORD EXPLORER NEARLY STALLED DRIVING THROUGH FLOOD WATERS.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 1.9 hours before the alert went out and 136 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1773 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 617 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 33 m²/s²
0-3 km storm-relative helicity: 30 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.6

Open this sounding in Storm Lab

The text

As transmitted.

387 
WGUS54 KBRO 120152
FFWBRO
TXC247-120315-
/O.NEW.KBRO.FF.W.0002.170412T0152Z-170412T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Brownsville TX
852 PM CDT TUE APR 11 2017

The National Weather Service in Brownsville has issued a

* Flash Flood Warning for...
  Central Jim Hogg County in Deep South Texas...

* Until 1015 PM CDT

* At 851 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Up to four inches of rain have 
  already fallen. Flash flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  Hebbronville, Las Lomitas, Gruy Stadium, Randado, Thompsonville,
  Jim Hogg County Airport, Hebbronville High School, South Fork
  Estates and Hebbronville Border Patrol Station.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

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 2734 9855 2734 9852 2727 9852 2726 9853
      2724 9849 2714 9849 2714 9847 2705 9847
      2705 9842 2696 9842 2703 9895 2727 9896
      2727 9880 2735 9880 2735 9879 2736 9863
      2734 9862 2734 9859 2736 9859 2736 9855

$$

TOMASELLI

3 follow-up statements

162 
WGUS74 KBRO 120234
FFSBRO

Flash Flood Statement
National Weather Service Brownsville TX
934 PM CDT TUE APR 11 2017

TXC247-120315-
/O.CON.KBRO.FF.W.0002.000000T0000Z-170412T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Jim Hogg TX-
934 PM CDT TUE APR 11 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT FOR
CENTRAL JIM HOGG COUNTY...

At 920 PM CDT, THE JIM HOGG COUNTY SHERIFFS DEPARTMENT REPORTED 
FLOODING IN HEBBRONVILLE AT THE INTERSECTIONS OF LINAR AND MESQUITE, 
EAST AND WEST VIGGIE, AND NORTH AND SOUTH SMITH. A FORD EXPLORER 
NEARLY STALLED WHILE DRIVING THROUGH THE FLOODWATERS. 

Some locations that will experience flooding include...
Hebbronville, Las Lomitas, Gruy Stadium, Randado, Thompsonville, Jim
Hogg County Airport, Hebbronville High School, South Fork Estates and
Hebbronville Border Patrol Station.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

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 2734 9855 2734 9852 2727 9852 2726 9853
      2724 9849 2714 9849 2714 9847 2705 9847
      2705 9842 2696 9842 2703 9895 2727 9896
      2727 9880 2735 9880 2735 9879 2736 9863
      2734 9862 2734 9859 2736 9859 2736 9855

$$

TOMASELLI

357 
WGUS74 KBRO 120301
FFSBRO

Flash Flood Statement
National Weather Service Brownsville TX
1001 PM CDT TUE APR 11 2017

TXC247-120315-
/O.CON.KBRO.FF.W.0002.000000T0000Z-170412T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Jim Hogg TX-
1001 PM CDT TUE APR 11 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT FOR
CENTRAL JIM HOGG COUNTY...

At 1000 PM CDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Up to four inches of rain have already
fallen. Flash flooding has occurred in the city of Hebbronville.

Some locations that will experience flooding include...
Hebbronville, Las Lomitas, Gruy Stadium, Randado, Thompsonville, Jim
Hogg County Airport, Hebbronville High School, South Fork Estates and
Hebbronville Border Patrol Station.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

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 2734 9855 2734 9852 2727 9852 2726 9853
      2724 9849 2714 9849 2714 9847 2705 9847
      2705 9842 2696 9842 2703 9895 2727 9896
      2727 9880 2735 9880 2735 9879 2736 9863
      2734 9862 2734 9859 2736 9859 2736 9855

$$

TOMASELLI

208 
WGUS74 KBRO 120311
FFSBRO

Flash Flood Statement
National Weather Service Brownsville TX
1011 PM CDT TUE APR 11 2017

TXC247-120321-
/O.EXP.KBRO.FF.W.0002.000000T0000Z-170412T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Jim Hogg TX-
1011 PM CDT TUE APR 11 2017

...THE FLASH FLOOD WARNING FOR CENTRAL JIM HOGG COUNTY WILL EXPIRE AT
1015 PM CDT...

The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed any remaining road closures.

LAT...LON 2734 9855 2734 9852 2727 9852 2726 9853
      2724 9849 2714 9849 2714 9847 2705 9847
      2705 9842 2696 9842 2703 9895 2727 9896
      2727 9880 2735 9880 2735 9879 2736 9863
      2734 9862 2734 9859 2736 9859 2736 9855

$$

TOMASELLI

The office that day

Everything else NWS Brownsville, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 11, 7:40 PM CDT	Severe Thunderstorm Warning	BRO	Zapata	50 min
Apr 11, 8:24 PM CDT	Areal Flood Advisory	BRO	Jim Hogg	96 min
Apr 11, 8:27 PM CDT	Severe Thunderstorm Warning	BRO	Zapata	33 min
Apr 11, 8:43 PM CDT	Special Weather Statement	BRO	Jim Hogg	47 min
Apr 11, 8:59 PM CDT	Severe Thunderstorm Warning	BRO	Zapata	33 min
Apr 11, 9:22 PM CDT	Special Weather Statement	BRO	Jim Hogg	38 min
Apr 11, 9:39 PM CDT	Areal Flood Advisory	BRO	Jim Hogg	96 min
Apr 11, 9:59 PM CDT	Areal Flood Advisory	BRO	Hidalgo, Starr	91 min
Apr 11, 10:49 PM CDT	Small Craft Advisory	BRO		5 hr
Apr 11, 10:49 PM CDT	Small Craft Advisory for Winds	BRO		5 hr

Nearby

Flash Flood Warnings in Texas, 2017 Every flash flood warning in 2017

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.