Alert archive / Texas / Flash Flood Warnings in 2020

Flash Flood Warning 21, NWS Brownsville, TX

July 26, 2020Cameron County, Hidalgo County, Willacy County, Texas

NWS Brownsville, TX issued this flash flood warning at Jul 26, 2020, 10:14 AM CDT for Cameron County, Hidalgo County, Willacy County, Texas. It was in force for 6 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: Jul 26, 2020, 10:14 AM CDT (15:14 UTC)
Expired: Jul 26, 2020, 3:57 PM CDT
In force: 6 hr
Issued by: NWS Brownsville, TX
Area: Storm-based polygon
Damage threat: Considerable
Flood severity: None

Counties Cameron County, TX, Hidalgo County, TX, Willacy County, TX

The radar

The Brownsville radar (KBRO), 51 km from the middle of the area, began a volume at 15:19 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, 3.2 hours before the alert went out and 53 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: 103 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 590 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: -43 m²/s²
0-3 km storm-relative helicity: 92 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

The text

As transmitted.

739 
WGUS54 KBRO 261514
FFWBRO
TXC061-215-489-261815-
/O.NEW.KBRO.FF.W.0021.200726T1514Z-200726T1815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Brownsville TX
1014 AM CDT Sun Jul 26 2020

The National Weather Service in Brownsville has issued a

* Flash Flood Warning for...
  Cameron County in deep south Texas...
  Eastern Hidalgo County in deep south Texas...
  Willacy County in deep south Texas...

* Until 115 PM CDT.

* At 1014 AM CDT, Doppler radar indicated heavy rain across the 
  warned area. Between 6 and 12 inches of rain have fallen across 
  most locations in Willacy and Cameron counties. Flash flooding is 
  already occurring.

  HAZARD...Life threatening flash flooding. Heavy rain producing
           flash flooding.

  SOURCE...Doppler radar.

  IMPACT...Life threatening flash flooding of creeks and streams,
           urban areas, highways, streets and underpasses.

* Some locations that will experience flash flooding include...
  Harlingen, San Benito, Raymondville, La Feria, Los Fresnos, Santa 
  Rosa, Lyford, Rancho Viejo, Rio Hondo, Palm Valley, Los Indios, 
  Laureles, Arroyo City, Olmito, La Paloma, Rangerville, Cameron 
  Park, Sebastian, Port Of Brownsville and Downtown Brownsville.

Additional rainfall amounts of 2 to 4 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 2656 9797 2659 9743 2646 9748 2635 9733
      2651 9740 2652 9740 2605 9718 2606 9717
      2656 9738 2657 9729 2659 9732 2659 9729
      2596 9714 2584 9742 2605 9785 2643 9785
      2646 9800

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

Hallman

3 follow-up statements

528 
WGUS54 KBRO 261725
FFWBRO
TXC061-215-489-262000-
/O.EXT.KBRO.FF.W.0021.000000T0000Z-200726T2000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Brownsville TX
1225 PM CDT Sun Jul 26 2020

The National Weather Service in Brownsville has extended the

* Flash Flood Warning for...
  Cameron County in deep south Texas...
  Eastern Hidalgo County in deep south Texas...
  Willacy County in deep south Texas...

* Until 300 PM CDT.

* At 1225 PM CDT, Doppler radar indicated heavy rain across the 
  warned area. Between 6 and 12 inches of rain have fallen across 
  most locations in Willacy and Cameron counties. Flash flooding is 
  already occurring.

  HAZARD...Life threatening flash flooding. Heavy rain producing
           flash flooding.

  SOURCE...Doppler radar.

  IMPACT...Life threatening flash flooding of creeks and streams,
           urban areas, highways, streets and underpasses.

* Some locations that will experience flash flooding include...
  Harlingen, San Benito, Raymondville, La Feria, Los Fresnos, Santa 
  Rosa, Lyford, Rancho Viejo, Rio Hondo, Palm Valley, Los Indios, 
  Laureles, Arroyo City, Olmito, La Paloma, Rangerville, Cameron 
  Park, Sebastian, Port Of Brownsville and Downtown Brownsville.

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 2656 9797 2659 9743 2646 9748 2635 9733
      2651 9740 2652 9740 2605 9718 2606 9717
      2656 9738 2657 9729 2659 9732 2659 9729
      2596 9714 2584 9742 2605 9785 2643 9785
      2646 9800

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

Hallman

364 
WGUS54 KBRO 261936
FFWBRO
TXC061-215-489-262200-
/O.EXT.KBRO.FF.W.0021.000000T0000Z-200726T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Brownsville TX
236 PM CDT Sun Jul 26 2020

The National Weather Service in Brownsville has extended the

* Flash Flood Warning for...
  Cameron County in deep south Texas...
  Eastern Hidalgo County in deep south Texas...
  Willacy County in deep south Texas...

* Until 500 PM CDT.

* At 236 PM CDT, Doppler radar indicated heavy rain across the 
  warned area. Between 7 and 12 inches of rain have fallen. Flash 
  flooding is already occurring.

  HAZARD...Flash flooding caused by heavy rain.

  SOURCE...Doppler radar.

  IMPACT...Flooding of small creeks and streams, urban areas,
           highways, streets and underpasses as well as other
           drainage and low lying areas.

* Some locations that will experience flash flooding include...
  Harlingen, San Benito, Raymondville, La Feria, Los Fresnos, Santa 
  Rosa, Lyford, Rancho Viejo, Rio Hondo, Palm Valley, Los Indios, 
  Laureles, Arroyo City, Olmito, La Paloma, Rangerville, Cameron 
  Park, Sebastian, Port Of Brownsville and Downtown Brownsville.

Additional rainfall amounts up to 1 inch 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 2656 9797 2659 9743 2646 9748 2635 9733
      2651 9740 2652 9740 2605 9718 2606 9717
      2656 9738 2657 9729 2659 9732 2659 9729
      2596 9714 2584 9742 2605 9785 2643 9785
      2646 9800

FLASH FLOOD...RADAR INDICATED

$$

Hallman

741 
WGUS74 KBRO 262057
FFSBRO

Flash Flood Statement
National Weather Service Brownsville TX
357 PM CDT Sun Jul 26 2020

TXC061-215-489-262107-
/O.CAN.KBRO.FF.W.0021.000000T0000Z-200726T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cameron TX-Hidalgo TX-Willacy TX-
357 PM CDT Sun Jul 26 2020

...FLASH FLOOD WARNING IS CANCELLED FOR CAMERON, EASTERN HIDALGO AND 
WILLACY 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 700 PM CDT for a portion 
of Deep South Texas.

LAT...LON 2656 9797 2659 9743 2646 9748 2635 9733
      2651 9740 2652 9740 2605 9718 2606 9717
      2656 9738 2657 9729 2659 9732 2659 9729
      2596 9714 2584 9742 2605 9785 2643 9785
      2646 9800

$$

Hallman

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 25, 8:13 PM CDT	Flash Flood Warning	BRO	Cameron, Hidalgo, Kenedy, Willacy	14 hr
Jul 25, 8:56 PM CDT	Areal Flood Advisory	BRO	Cameron, Hidalgo, Willacy	89 min
Jul 25, 9:32 PM CDT	Special Marine Warning	BRO		88 min
Jul 25, 10:00 PM CDT	Special Marine Warning	BRO		45 min
Jul 25, 10:03 PM CDT	Flash Flood Warning	BRO	Cameron, Hidalgo, Willacy	7 hr
Jul 25, 10:08 PM CDT	Special Marine Warning	BRO		37 min
Jul 25, 10:50 PM CDT	Special Marine Warning	BRO		55 min
Jul 25, 11:26 PM CDT	Areal Flood Advisory	BRO	Kenedy, Willacy	110 min
Jul 25, 11:34 PM CDT	Areal Flood Advisory	BRO	Hidalgo	2 hr
Jul 25, 11:34 PM CDT	Special Marine Warning	BRO		56 min
Jul 26, 12:10 AM CDT	Special Marine Warning	BRO		65 min
Jul 26, 12:30 AM CDT	Flash Flood Warning	BRO	Hidalgo	5 hr
Jul 26, 12:48 AM CDT	Areal Flood Advisory	BRO	Hidalgo, Willacy	3 hr
Jul 26, 1:07 AM CDT	Areal Flood Advisory	BRO	Cameron	113 min
Jul 26, 1:31 AM CDT	Special Marine Warning	BRO		44 min
Jul 26, 1:41 AM CDT	Flash Flood Warning	BRO	Hidalgo	2 hr
Jul 26, 2:14 AM CDT	Flash Flood Warning	BRO	Cameron	8 hr
Jul 26, 2:21 AM CDT	Special Marine Warning	BRO		54 min
Jul 26, 2:32 AM CDT	Special Marine Warning	BRO		58 min
Jul 26, 2:34 AM CDT	Areal Flood Advisory	BRO	Cameron	40 min
Jul 26, 3:13 AM CDT	Flash Flood Warning	BRO	Cameron, Hidalgo, Willacy	7 hr
Jul 26, 3:24 AM CDT	Flash Flood Warning Considerable damage threat	BRO	Cameron, Kenedy, Willacy	7 hr
Jul 26, 3:27 AM CDT	Tornado Warning	BRO	Cameron	33 min
Jul 26, 4:00 AM CDT	Tornado Warning	BRO	Cameron, Willacy	30 min
Jul 26, 4:07 AM CDT	Tornado Warning	BRO	Cameron, Willacy	23 min
Jul 26, 4:17 AM CDT	Flash Flood Warning	BRO	Hidalgo, Starr	6 hr
Jul 26, 4:30 AM CDT	Special Marine Warning	BRO		90 min
Jul 26, 5:19 AM CDT	Areal Flood Advisory	BRO	Hidalgo	82 min
Jul 26, 5:39 AM CDT	Areal Flood Advisory	BRO	Kenedy	111 min
Jul 26, 5:48 AM CDT	Flash Flood Warning EmergencyCatastrophic damage threat	BRO	Hidalgo	13 hr
Jul 26, 6:00 AM CDT	Flash Flood Warning	BRO	Cameron, Hidalgo, Willacy	5 hr
Jul 26, 6:32 AM CDT	Special Marine Warning	BRO		58 min
Jul 26, 6:41 AM CDT	Flash Flood Warning	BRO	Hidalgo	4 hr
Jul 26, 8:34 AM CDT	Areal Flood Advisory	BRO	Brooks, Hidalgo, Kenedy, Starr, Willacy	3 hr
Jul 26, 9:02 AM CDT	Tornado Warning	BRO	Hidalgo	13 min
Jul 26, 10:04 AM CDT	Flash Flood Warning EmergencyCatastrophic damage threat	BRO	Cameron, Hidalgo	9 hr
Jul 26, 10:33 AM CDT	Small Craft Advisory	BRO		18 hr
Jul 26, 10:44 AM CDT	Flash Flood Warning Considerable damage threat	BRO	Brooks, Cameron, Hidalgo, Jim Hogg, Starr, Willacy	4 hr
Jul 26, 11:22 AM CDT	Areal Flood Advisory	BRO	Hidalgo, Starr	3 hr
Jul 26, 11:25 AM CDT	Tornado Warning	BRO	Hidalgo	11 min
Jul 26, 11:42 AM CDT	Areal Flood Advisory	BRO	Brooks, Hidalgo, Jim Hogg, Kenedy, Starr, Willacy	4 hr
Jul 26, 11:52 AM CDT	Special Weather Statement	BRO	Brooks	38 min
Jul 26, 11:57 AM CDT	Special Weather Statement	BRO	Cameron	48 min
Jul 26, 12:30 PM CDT	Tornado Warning	BRO	Kenedy, Willacy	45 min
Jul 26, 12:33 PM CDT	Special Marine Warning	BRO		42 min
Jul 26, 12:47 PM CDT	Tornado Warning	BRO	Brooks, Kenedy	28 min
Jul 26, 1:04 PM CDT	Tornado Warning	BRO	Brooks	26 min
Jul 26, 1:17 PM CDT	Special Weather Statement	BRO	Brooks	28 min
Jul 26, 1:34 PM CDT	Special Weather Statement	BRO	Zapata	41 min
Jul 26, 1:36 PM CDT	Areal Flood Advisory	BRO	Hidalgo, Jim Hogg, Starr	4 hr
Jul 26, 2:16 PM CDT	Flash Flood Warning Considerable damage threat	BRO	Hidalgo, Starr	9 hr
Jul 26, 2:23 PM CDT	Areal Flood Advisory	BRO	Jim Hogg, Starr, Zapata	7 hr
Jul 26, 2:39 PM CDT	Areal Flood Advisory	BRO	Brooks, Cameron, Hidalgo, Jim Hogg, Starr, Willacy	4 hr
Jul 26, 2:42 PM CDT	Special Weather Statement	BRO	Starr	48 min
Jul 26, 5:38 PM CDT	Flash Flood Warning	BRO	Hidalgo, Jim Hogg, Starr	5 hr
Jul 26, 5:59 PM CDT	Areal Flood Advisory	BRO	Jim Hogg, Zapata	96 min
Jul 26, 6:58 PM CDT	Flash Flood Warning Considerable damage threat	BRO	Cameron, Hidalgo	5 hr

Nearby

Flash Flood Warnings in Texas, 2020 Every flash flood warning in 2020

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.