Alert archive / Texas / Flash Flood Warnings in 2021

Flash Flood Warning 33, NWS Brownsville, TX

July 9, 2021Cameron County, Texas

NWS Brownsville, TX issued this flash flood warning at Jul 9, 2021, 4:23 PM CDT for Cameron 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 counties it named.

The facts

Issued: Jul 9, 2021, 4:23 PM CDT (21:23 UTC)
Expired: Jul 9, 2021, 6:29 PM CDT
In force: 2 hr
Issued by: NWS Brownsville, TX
Area: Whole counties
Flood severity: None

County Cameron County, TX

The radar

The Brownsville radar (KBRO), 27 km from the middle of the area, began a volume at 21:23 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, 9.4 hours before the alert went out and 176 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: 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

Open this sounding in Storm Lab

The text

As transmitted.

940 
WGUS54 KBRO 092123
FFWBRO
TXC061-100030-
/O.NEW.KBRO.FF.W.0033.210709T2123Z-210710T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Brownsville TX
423 PM CDT Fri Jul 9 2021

The National Weather Service in Brownsville has issued a

* Flash Flood Warning for...
  Central Cameron County in deep south Texas...

* Until 730 PM CDT.

* At 423 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 2 and 5 inches of rain 
  have fallen. The expected rainfall rate is 1 to 1.5 inches in 1 
  hour. Additional rainfall amounts of 1 to 2 inches are possible in 
  the warned area. Flash flooding is ongoing or expected to begin 
  shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Los Fresnos, Rio Hondo, Laureles, Arroyo City, Brownsville, 
  Lozano, Palmer Laasko Elementary, Library Memorial Middle School, 
  Los Fresnos High School, Lopez - Riggins Elementary School, Los 
  Fresnos City Offices, Resaca Middle School, Los Cuates, Indian 
  Lake, La Tina, Las Yescas Elementary School, Las Yescas, Monte 
  Grande, Boys And Girls Club Of Los Fresnos and Los Cuates Middle 
  School.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be aware of your surroundings and do not drive on flooded roads.

Please report observed flooding to local emergency services or law 
enforcement and request they pass this information to the National 
Weather Service when you can do so safely.

&&

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-1.5 INCHES IN 1 HOUR

$$

Farris

2 follow-up statements

706 
WGUS74 KBRO 092142
FFSBRO

Flash Flood Statement
National Weather Service Brownsville TX
442 PM CDT Fri Jul 9 2021

TXC061-100030-
/O.CON.KBRO.FF.W.0033.000000T0000Z-210710T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cameron TX-
442 PM CDT Fri Jul 9 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 730 PM CDT THIS 
EVENING FOR CENTRAL CAMERON COUNTY...

At 442 PM CDT, Doppler radar indicated thunderstorms producing heavy 
rain across the warned area. Between 3 and 5 inches of rain have 
fallen. The expected rainfall rate is 1 to 1.5 inches in 1 hour. 
Additional rainfall amounts of 1 to 2 inches are possible in the 
warned area. Flash flooding is ongoing or expected to begin shortly.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar.

IMPACT...Flash flooding of small creeks and streams, urban areas,
         highways, streets and underpasses as well as other poor
         drainage and low-lying areas.

Some locations that will experience flash flooding include...
  Los Fresnos, Rio Hondo, Laureles, Arroyo City, Brownsville, 
  Lozano, Palmer Laasko Elementary, Library Memorial Middle School, 
  Los Fresnos High School, Lopez - Riggins Elementary School, Los 
  Fresnos City Offices, Resaca Middle School, Los Cuates, Indian 
  Lake, La Tina, Las Yescas Elementary School, Las Yescas, Monte 
  Grande, Boys And Girls Club Of Los Fresnos and Los Cuates Middle 
  School.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be aware of your surroundings and do not drive on flooded roads.

Please report observed flooding to local emergency services or law 
enforcement and request they pass this information to the National 
Weather Service when you can do so safely.

&&

LAT...LON 2637 9742 2639 9741 2607 9740 2606 9756
      2630 9754 2630 9753 2633 9752 2632 9751
      2631 9751 2632 9750 2633 9751 2633 9746
      2632 9745 2633 9744

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-1.5 INCHES IN 1 HOUR

$$

Farris

273 
WGUS74 KBRO 092329
FFSBRO

Flash Flood Statement
National Weather Service Brownsville TX
629 PM CDT Fri Jul 9 2021

TXC061-092339-
/O.CAN.KBRO.FF.W.0033.000000T0000Z-210710T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cameron TX-
629 PM CDT Fri Jul 9 2021

...FLASH FLOOD WARNING IS CANCELLED FOR CENTRAL CAMERON COUNTY...

The heavy rain has ended. However, any remaining flood waters will 
be slow to recede. Please continue to heed remaining road closures.

A Flash Flood Watch remains in effect until 700 AM CDT Saturday for 
a portion of Deep South Texas.

LAT...LON 2637 9742 2639 9741 2607 9740 2606 9756
      2630 9754 2630 9753 2633 9752 2632 9751
      2631 9751 2632 9750 2633 9751 2633 9746
      2632 9745 2633 9744

$$

Farris

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 8, 9:27 PM CDT	Areal Flood Advisory	BRO	Cameron	56 min
Jul 9, 1:47 AM CDT	Areal Flood Advisory	BRO	Cameron	118 min
Jul 9, 2:18 AM CDT	Rip Current Statement	BRO	Kenedy	17 hr
Jul 9, 3:41 AM CDT	Flash Flood Warning	BRO	Cameron	6 hr
Jul 9, 4:32 AM CDT	Special Weather Statement	BRO	Cameron	43 min
Jul 9, 5:03 AM CDT	Special Weather Statement	BRO	Cameron	42 min
Jul 9, 5:08 AM CDT	Areal Flood Advisory	BRO	Cameron	2 hr
Jul 9, 5:14 AM CDT	Special Marine Warning	BRO		46 min
Jul 9, 5:22 AM CDT	Severe Thunderstorm Warning	BRO	Cameron	38 min
Jul 9, 5:44 AM CDT	Flash Flood Warning	BRO	Cameron	4 hr
Jul 9, 5:51 AM CDT	Special Marine Warning	BRO		54 min
Jul 9, 6:05 AM CDT	Special Marine Warning	BRO		25 min
Jul 9, 6:24 AM CDT	Special Marine Warning	BRO		51 min
Jul 9, 6:47 AM CDT	Flash Flood Warning	BRO	Cameron	3 hr
Jul 9, 7:05 AM CDT	Special Marine Warning	BRO		55 min
Jul 9, 9:16 AM CDT	Small Craft Advisory	BRO		4 hr
Jul 9, 9:36 AM CDT	Areal Flood Advisory	BRO	Cameron	4 hr
Jul 9, 9:39 AM CDT	Areal Flood Advisory	BRO	Cameron	4 hr
Jul 9, 9:42 AM CDT	Areal Flood Advisory	BRO	Cameron	4 hr
Jul 9, 2:57 PM CDT	Special Weather Statement	BRO	Hidalgo	48 min
Jul 9, 3:36 PM CDT	Areal Flood Advisory	BRO	Cameron	26 min
Jul 9, 3:40 PM CDT	Areal Flood Advisory	BRO	Cameron	13 min
Jul 9, 3:44 PM CDT	Flash Flood Warning	BRO	Cameron	2 hr
Jul 9, 3:52 PM CDT	Flash Flood Warning	BRO	Cameron	42 min
Jul 9, 4:59 PM CDT	Areal Flood Advisory	BRO	Willacy	51 min
Jul 9, 5:09 PM CDT	Special Weather Statement	BRO	Brooks	51 min
Jul 9, 5:10 PM CDT	Special Weather Statement	BRO	Kenedy	50 min
Jul 9, 5:45 PM CDT	Areal Flood Advisory	BRO	Cameron	51 min
Jul 9, 5:59 PM CDT	Special Weather Statement	BRO	Kleberg	16 min
Jul 9, 6:01 PM CDT	Special Weather Statement	BRO	Kenedy	14 min
Jul 9, 6:09 PM CDT	Areal Flood Advisory	BRO	Kenedy, Willacy	51 min

Nearby

Flash Flood Warnings in Texas, 2021 Every 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.