Alert archive / Texas / Flash Flood Warnings in 2021

Flash Flood Warning 2, NWS Brownsville, TX

May 19, 2021Starr County, Zapata County, Texas

NWS Brownsville, TX issued this flash flood warning at May 19, 2021, 7:11 AM CDT for Starr County, Zapata 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: May 19, 2021, 7:11 AM CDT (12:11 UTC)
Expired: May 19, 2021, 9:17 AM CDT
In force: 2 hr
Issued by: NWS Brownsville, TX
Area: Storm-based polygon
Flood severity: None

Counties Starr County, TX, Zapata County, TX

The radar

The Brownsville radar (KBRO), 192 km from the middle of the area, began a volume at 12:10 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, 0.2 hours before the alert went out and 195 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.

220 
WGUS54 KBRO 191211
FFWBRO
TXC427-505-191515-
/O.NEW.KBRO.FF.W.0002.210519T1211Z-210519T1515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

The National Weather Service in Brownsville has issued a

* Flash Flood Warning for...
  West Central Starr County in deep south Texas...
  Southeastern Zapata County in deep south Texas...

* Until 1015 AM CDT.

* At 711 AM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 2 and 3 inches of rain 
  have fallen. Additional rainfall amounts of 2 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...
  Lopeno, New Falcon, Morales-Sanchez, Falcon State Park, Falcon 
  Heights, Falcon Dam, Salineno, Siesta Shores, Falcon Lake Estates, 
  Falcon Mesa, Fronton, Black Bass and Zapata--Medina.

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 2687 9932 2693 9914 2664 9902 2640 9905
      2640 9906 2640 9908 2643 9911 2648 9909
      2650 9911 2652 9913 2654 9917 2662 9918
      2666 9920 2672 9921 2675 9924 2679 9924
      2684 9927 2686 9928

FLASH FLOOD...RADAR INDICATED

$$

Hallman

5 follow-up statements

137 
WGUS74 KBRO 191221
FFSBRO

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

TXC427-505-191515-
/O.CON.KBRO.FF.W.0002.000000T0000Z-210519T1515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Starr TX-Zapata TX-
721 AM CDT Wed May 19 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1015 AM CDT THIS 
MORNING FOR WEST CENTRAL STARR AND SOUTHEASTERN ZAPATA COUNTIES...

At 721 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 2 to 4 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...
  Lopeno, New Falcon, Morales-Sanchez, Falcon State Park, Falcon 
  Heights, Falcon Dam, Salineno, Siesta Shores, Falcon Lake Estates, 
  Falcon Mesa, Fronton, Black Bass and Zapata--Medina.

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 2687 9932 2693 9914 2664 9902 2640 9905
      2640 9906 2640 9908 2643 9911 2648 9909
      2650 9911 2652 9913 2654 9917 2662 9918
      2666 9920 2672 9921 2675 9924 2679 9924
      2684 9927 2686 9928

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

$$

Hallman

533 
WGUS74 KBRO 191237
FFSBRO

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

TXC427-505-191515-
/O.CON.KBRO.FF.W.0002.000000T0000Z-210519T1515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Starr TX-Zapata TX-
737 AM CDT Wed May 19 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1015 AM CDT THIS 
MORNING FOR WEST CENTRAL STARR AND SOUTHEASTERN ZAPATA COUNTIES...

At 737 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 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...
  Lopeno, New Falcon, Morales-Sanchez, Falcon State Park, Falcon 
  Heights, Falcon Dam, Salineno, Siesta Shores, Falcon Lake Estates, 
  Falcon Mesa, Fronton, Black Bass and Zapata--Medina.

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 2687 9932 2693 9914 2664 9902 2640 9905
      2640 9906 2640 9908 2643 9911 2648 9909
      2650 9911 2652 9913 2654 9917 2662 9918
      2666 9920 2672 9921 2675 9924 2679 9924
      2684 9927 2686 9928

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

$$

Hallman

002 
WGUS74 KBRO 191311
FFSBRO

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

TXC427-505-191515-
/O.CON.KBRO.FF.W.0002.000000T0000Z-210519T1515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Starr TX-Zapata TX-
811 AM CDT Wed May 19 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1015 AM CDT THIS 
MORNING FOR WEST CENTRAL STARR AND SOUTHEASTERN ZAPATA COUNTIES...

At 811 AM CDT, Doppler radar indicated thunderstorms producing heavy 
rain across the warned area. Between 2 and 3 inches of rain have 
fallen. Additional rainfall amounts of 0.5 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...
  Lopeno, New Falcon, Falcon State Park, Falcon Heights, Falcon Dam, 
  Salineno, Morales-Sanchez and Fronton.

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 2662 9918 2666 9920 2672 9921 2675 9924
      2682 9909 2664 9902 2641 9905 2640 9906
      2640 9908 2643 9911 2648 9909 2650 9911
      2652 9913 2654 9917 2656 9917

FLASH FLOOD...RADAR INDICATED

$$

Hallman

463 
WGUS74 KBRO 191337
FFSBRO

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

TXC427-505-191515-
/O.CON.KBRO.FF.W.0002.000000T0000Z-210519T1515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Starr TX-Zapata TX-
837 AM CDT Wed May 19 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1015 AM CDT THIS 
MORNING FOR WEST CENTRAL STARR AND SOUTHEASTERN ZAPATA COUNTIES...

At 837 AM CDT, Doppler radar indicated thunderstorms producing heavy 
rain across the warned area. Between 2 and 4 inches of rain have 
fallen. Additional rainfall amounts up to 0.5 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...
  Lopeno, New Falcon, Falcon State Park, Falcon Heights, Falcon Dam, 
  Salineno, Morales-Sanchez and Fronton.

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 2662 9918 2666 9920 2672 9921 2675 9924
      2682 9909 2664 9902 2641 9905 2640 9906
      2640 9908 2643 9911 2648 9909 2650 9911
      2652 9913 2654 9917 2656 9917

FLASH FLOOD...RADAR INDICATED

$$

Hallman

304 
WGUS74 KBRO 191417
FFSBRO

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

TXC427-505-191427-
/O.CAN.KBRO.FF.W.0002.000000T0000Z-210519T1515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Starr TX-Zapata TX-
917 AM CDT Wed May 19 2021

...FLASH FLOOD WARNING IS CANCELLED FOR WEST CENTRAL STARR AND 
SOUTHEASTERN ZAPATA COUNTIES...

The heavy rain has ended. Flash flooding is no longer expected to 
pose a threat. A Flood Advisory remains in effect. 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 2662 9918 2666 9920 2672 9921 2675 9924
      2682 9909 2664 9902 2641 9905 2640 9906
      2640 9908 2643 9911 2648 9909 2650 9911
      2652 9913 2654 9917 2656 9917

$$

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	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	Flash Flood Warning	BRO	Cameron, Hidalgo	4 hr
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.