Alert archive / Texas / Flash Flood Warnings in 2021

Flash Flood Warning 13, NWS Brownsville, TX

May 19, 2021Cameron County, Hidalgo County, Texas

NWS Brownsville, TX issued this flash flood warning at May 19, 2021, 10:29 AM CDT for Cameron County, Hidalgo 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 outline as issued.

The facts

Issued: May 19, 2021, 10:29 AM CDT (15:29 UTC)
Expired: May 19, 2021, 2:44 PM CDT
In force: 4 hr
Issued by: NWS Brownsville, TX
Area: Storm-based polygon
Flood severity: None

Counties Cameron County, TX, Hidalgo County, TX

The radar

The Brownsville radar (KBRO), 51 km from the middle of the area, began a volume at 15:32 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

Brownsville Intl, TX (KBRO), launched 12:00Z, 3.5 hours before the alert went out and 54 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: 3667 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 504 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 57 m²/s²
0-3 km storm-relative helicity: 122 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 6.3

Open this sounding in Storm Lab

The text

As transmitted.

015 
WGUS54 KBRO 191529
FFWBRO
TXC061-215-191830-
/O.NEW.KBRO.FF.W.0013.210519T1529Z-210519T1830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Brownsville TX
1029 AM CDT Wed May 19 2021

The National Weather Service in Brownsville has issued a

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

* Until 130 PM CDT.

* At 1029 AM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 2 and 3 inches of rain 
  have fallen. The expected rainfall rate is 1 to 2 inches in 1 
  hour. Additional rainfall amounts of 1 to 3 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...
  Mercedes, Relampago, Mercedes High School, Mercedes Junior High 
  School, Ruben Hinojosa Elementary School, Mercedes Memorial 
  Library, Mercedes Police Department, Llano Grande Country Club and 
  Mcallen.

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.

&&

LAT...LON 2616 9793 2615 9786 2607 9786 2606 9787
      2606 9788 2607 9788 2607 9789 2606 9789
      2606 9790 2606 9791 2606 9792 2606 9793

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-2 INCHES IN 1 HOUR

$$

Hallman

3 follow-up statements

599 
WGUS74 KBRO 191558 RRB
FFSBRO

Flash Flood Statement
National Weather Service Brownsville TX
1058 AM CDT Wed May 19 2021

TXC061-215-191830-
/O.CON.KBRO.FF.W.0013.000000T0000Z-210519T1830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cameron TX-Hidalgo TX-
1058 AM CDT Wed May 19 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 130 PM CDT THIS 
AFTERNOON FOR WEST CENTRAL CAMERON AND SOUTHEASTERN HIDALGO 
COUNTIES...

At 1058 AM CDT, Doppler radar indicated thunderstorms producing 
heavy rain across the warned area. Between 2 and 3 inches of rain 
have fallen. The expected rainfall rate is 0.25 to 0.75 inches in 1 
hour. Additional rainfall amounts of 0.5 to 1.5 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...
  Mercedes, Relampago, Mercedes High School, Mercedes Junior High 
  School, Ruben Hinojosa Elementary School, Mercedes Memorial 
  Library, Mercedes Police Department, Llano Grande Country Club and 
  Mcallen.

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.

&&

LAT...LON 2616 9793 2615 9786 2607 9786 2606 9787
      2606 9788 2607 9788 2607 9789 2606 9789
      2606 9790 2606 9791 2606 9792 2606 9793

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...0.25-0.75 INCHES IN 1 HOUR

$$

Hallman

129 
WGUS54 KBRO 191808
FFWBRO
TXC061-215-192000-
/O.EXT.KBRO.FF.W.0013.000000T0000Z-210519T2000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Brownsville TX
108 PM CDT Wed May 19 2021

The National Weather Service in Brownsville has extended the

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

* Until 300 PM CDT.

* At 108 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 2 and 4 inches of rain 
  have fallen. The expected rainfall rate is 0.25 inch in 1 hour. 
  Additional rainfall amounts up to 1 inch 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...
  Mercedes, Relampago, Mercedes High School, Mercedes Junior High 
  School, Ruben Hinojosa Elementary School, Mercedes Memorial 
  Library, Mercedes Police Department, Llano Grande Country Club and 
  Mcallen.

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.

&&

LAT...LON 2616 9793 2615 9786 2607 9786 2606 9787
      2606 9788 2607 9788 2607 9789 2606 9789
      2606 9790 2606 9791 2606 9792 2606 9793

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...0.25 INCHES IN 1 HOUR

$$

Hallman

427 
WGUS74 KBRO 191944 RRA
FFSBRO

Flash Flood Statement
National Weather Service Brownsville TX
244 PM CDT Wed May 19 2021

TXC061-215-191954-
/O.CAN.KBRO.FF.W.0013.000000T0000Z-210519T2000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cameron TX-Hidalgo TX-
244 PM CDT Wed May 19 2021

...FLASH FLOOD WARNING IS CANCELLED FOR WEST CENTRAL CAMERON AND 
SOUTHEASTERN HIDALGO COUNTIES...

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

A Flash Flood Watch remains in effect until 100 PM CDT Thursday for 
a portion of Deep South Texas.

LAT...LON 2616 9793 2615 9786 2607 9786 2606 9787
      2606 9788 2607 9788 2607 9789 2606 9789
      2606 9790 2606 9791 2606 9792 2606 9793

$$

Hallman

The office that day

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

Issued	Product	Office	Counties	Lasted
May 19, 3:30 AM CDT	Rip Current Statement	BRO	Kenedy	16 hr
May 19, 4:58 AM CDT	Special Weather Statement	BRO	Jim Hogg	32 min
May 19, 5:50 AM CDT	Special Weather Statement	BRO	Jim Hogg	40 min
May 19, 5:56 AM CDT	Special Weather Statement	BRO	Zapata	34 min
May 19, 6:03 AM CDT	Special Weather Statement	BRO	Starr	42 min
May 19, 6:27 AM CDT	Severe Thunderstorm Warning	BRO	Jim Hogg, Zapata	33 min
May 19, 6:32 AM CDT	Areal Flood Advisory	BRO	Jim Hogg, Starr, Zapata	7 hr
May 19, 6:51 AM CDT	Severe Thunderstorm Warning	BRO	Starr	39 min
May 19, 7:11 AM CDT	Flash Flood Warning	BRO	Starr, Zapata	2 hr
May 19, 7:11 AM CDT	Severe Thunderstorm Warning	BRO	Hidalgo, Starr	64 min
May 19, 7:12 AM CDT	Flash Flood Warning	BRO	Jim Hogg, Zapata	3 hr
May 19, 7:17 AM CDT	Flash Flood Warning	BRO	Jim Hogg	3 hr
May 19, 7:25 AM CDT	Areal Flood Advisory	BRO	Starr	6 hr
May 19, 7:27 AM CDT	Areal Flood Advisory	BRO	Jim Hogg, Zapata	4 hr
May 19, 7:27 AM CDT	Severe Thunderstorm Warning	BRO	Starr, Zapata	63 min
May 19, 7:34 AM CDT	Special Weather Statement	BRO	Jim Hogg	56 min
May 19, 7:42 AM CDT	Areal Flood Advisory	BRO	Kenedy	6 hr
May 19, 7:47 AM CDT	Severe Thunderstorm Warning	BRO	Brooks, Hidalgo, Jim Hogg, Starr	43 min
May 19, 7:51 AM CDT	Tornado Warning	BRO	Brooks, Hidalgo, Starr	24 min
May 19, 8:12 AM CDT	Tornado Warning	BRO	Hidalgo	18 min
May 19, 8:15 AM CDT	Areal Flood Advisory	BRO	Hidalgo	5 hr
May 19, 8:17 AM CDT	Areal Flood Advisory	BRO	Starr	5 hr
May 19, 8:21 AM CDT	Severe Thunderstorm Warning	BRO	Brooks, Cameron, Hidalgo, Jim Hogg, Kenedy, Starr and 1 more	39 min
May 19, 8:23 AM CDT	Special Marine Warning	BRO		26 min
May 19, 8:26 AM CDT	Flash Flood Warning	BRO	Jim Hogg	113 min
May 19, 8:29 AM CDT	Areal Flood Advisory	BRO	Brooks, Jim Hogg	5 hr
May 19, 8:34 AM CDT	Areal Flood Advisory	BRO	Hidalgo	7 hr
May 19, 8:42 AM CDT	Areal Flood Advisory	BRO	Brooks, Kenedy	5 hr
May 19, 8:47 AM CDT	Tornado Warning	BRO	Brooks	13 min
May 19, 8:58 AM CDT	Severe Thunderstorm Warning	BRO	Brooks, Cameron, Hidalgo, Kenedy, Willacy	47 min
May 19, 9:04 AM CDT	Areal Flood Advisory	BRO	Cameron, Hidalgo, Kenedy, Willacy	7 hr
May 19, 9:05 AM CDT	Tornado Warning	BRO	Kenedy, Willacy	10 min
May 19, 9:11 AM CDT	Tornado Warning	BRO	Kenedy, Willacy	19 min
May 19, 9:14 AM CDT	Special Marine Warning	BRO		61 min
May 19, 9:21 AM CDT	Areal Flood Advisory	BRO	Kenedy	5 hr
May 19, 9:27 AM CDT	Special Marine Warning	BRO		63 min
May 19, 9:28 AM CDT	Tornado Warning	BRO	Kenedy	17 min
May 19, 9:43 AM CDT	Special Weather Statement	BRO	Cameron, Kenedy, Willacy	47 min
May 19, 9:44 AM CDT	Tornado Warning	BRO	Willacy	16 min
May 19, 9:48 AM CDT	Flash Flood Warning	BRO	Hidalgo	4 hr
May 19, 9:48 AM CDT	Special Marine Warning	BRO		57 min
May 19, 9:50 AM CDT	Flash Flood Warning	BRO	Hidalgo	4 hr
May 19, 10:10 AM CDT	Special Marine Warning	BRO		65 min
May 19, 10:10 AM CDT	Special Weather Statement	BRO	Hidalgo	50 min
May 19, 10:11 AM CDT	Areal Flood Advisory	BRO	Cameron, Willacy	7 hr
May 19, 10:15 AM CDT	Flash Flood Warning	BRO	Hidalgo, Willacy	4 hr
May 19, 10:18 AM CDT	Flash Flood Warning	BRO	Hidalgo	5 hr
May 19, 10:21 AM CDT	Flash Flood Warning	BRO	Willacy	5 hr
May 19, 10:24 AM CDT	Flash Flood Warning	BRO	Cameron, Hidalgo, Willacy	5 hr
May 19, 10:27 AM CDT	Flash Flood Warning	BRO	Cameron	4 hr
May 19, 10:28 AM CDT	Special Weather Statement	BRO	Cameron, Willacy	47 min
May 19, 10:29 AM CDT	Special Marine Warning	BRO		46 min
May 19, 10:42 AM CDT	Special Marine Warning	BRO		48 min
May 19, 10:51 AM CDT	Special Marine Warning	BRO		39 min
May 19, 11:00 AM CDT	Flash Flood Warning	BRO	Cameron, Willacy	5 hr
May 19, 11:06 AM CDT	Special Marine Warning	BRO		24 min
May 19, 11:12 AM CDT	Special Marine Warning	BRO		18 min
May 19, 11:21 AM CDT	Special Weather Statement	BRO	Cameron	24 min
May 19, 11:25 AM CDT	Special Marine Warning	BRO		50 min
May 19, 11:30 AM CDT	Flash Flood Warning	BRO	Cameron	5 hr
May 19, 11:34 AM CDT	Areal Flood Advisory	BRO	Cameron	3 hr
May 19, 12:10 PM CDT	Special Marine Warning	BRO		50 min
May 19, 12:15 PM CDT	Flash Flood Warning	BRO	Cameron	4 hr
May 19, 2:38 PM CDT	Coastal Flood Advisory	BRO	Kenedy	6 hr
May 19, 2:41 PM CDT	Flash Flood Warning	BRO	Cameron	112 min
May 19, 2:59 PM CDT	Areal Flood Warning	BRO	Cameron	6 hr
May 19, 3:08 PM CDT	Areal Flood Warning	BRO	Hidalgo	19 hr
May 19, 4:36 PM CDT	Wind Advisory	BRO	Cameron	102 min
May 19, 6:20 PM CDT	Small Craft Advisory	BRO		15 hr

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.