Alert archive / Texas / Flash Flood Warnings in 2021

Flash Flood Warning 44, NWS Brownsville, TX

October 1, 2021Cameron County, Texas

NWS Brownsville, TX issued this flash flood warning at Oct 1, 2021, 5:42 PM CDT for Cameron County, Texas. It was in force for 87 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: Oct 1, 2021, 5:42 PM CDT (22:42 UTC)
Expired: Oct 1, 2021, 7:09 PM CDT
In force: 87 min
Issued by: NWS Brownsville, TX
Area: Storm-based polygon
Flood severity: None

County Cameron County, TX

The radar

The Brownsville radar (KBRO), 22 km from the middle of the area, began a volume at 22:42 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
Oct 1, 5:59 PM CDT	FLOOD	Los Fresnos, TX	PUBLIC PICTURE SHOWS WATER HALFWAY UP THE WHEELS OF SEVERAL CARS IN LOS FRESNOS NEAR THE LIBRARY.

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

The nearest sounding before it

Brownsville Intl, TX (KBRO), launched 12:00Z, 10.7 hours before the alert went out and 24 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: 2086 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 809 m above ground
0-6 km bulk shear: 3 kt
0-1 km storm-relative helicity: -24 m²/s²
0-3 km storm-relative helicity: -12 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

087 
WGUS54 KBRO 012242
FFWBRO
TXC061-020045-
/O.NEW.KBRO.FF.W.0044.211001T2242Z-211002T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Brownsville TX
542 PM CDT Fri Oct 1 2021

The National Weather Service in Brownsville has issued a

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

* Until 745 PM CDT.

* At 542 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 2 to 3 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...
  Los Fresnos, Rio Hondo, Laureles, Brownsville, Palmer Laasko 
  Elementary, Los Fresnos High School, Library Memorial Middle 
  School, Lopez - Riggins Elementary School, Los Fresnos City 
  Offices, Resaca Middle School, Los Cuates, Indian Lake, Bayview, 
  Boys And Girls Club Of Los Fresnos, Whipple Memorial Library 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.

&&

LAT...LON 2605 9748 2610 9755 2618 9759 2620 9746
      2615 9735 2608 9734 2609 9745

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...2-3 INCHES IN 1 HOUR

$$

Farris

1 follow-up statement

866 
WGUS74 KBRO 020009
FFSBRO

Flash Flood Statement
National Weather Service Brownsville TX
709 PM CDT Fri Oct 1 2021

TXC061-020019-
/O.CAN.KBRO.FF.W.0044.000000T0000Z-211002T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cameron TX-
709 PM CDT Fri Oct 1 2021

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

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

A Flash Flood Watch remains in effect until 1000 PM CDT for a 
portion of Deep South Texas.

LAT...LON 2605 9748 2610 9755 2618 9759 2620 9746
      2615 9735 2608 9734 2609 9745

$$

Farris

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 30, 7:14 PM CDT	Special Weather Statement	BRO	Brooks	16 min
Sep 30, 7:16 PM CDT	Areal Flood Advisory	BRO	Brooks	3 hr
Sep 30, 7:23 PM CDT	Areal Flood Advisory	BRO	Brooks, Kenedy	3 hr
Sep 30, 7:28 PM CDT	Special Weather Statement	BRO	Brooks, Jim Hogg	47 min
Sep 30, 7:59 PM CDT	Areal Flood Advisory	BRO	Brooks	2 hr
Sep 30, 8:14 PM CDT	Special Weather Statement	BRO	Brooks, Jim Hogg	31 min
Sep 30, 8:44 PM CDT	Special Weather Statement	BRO	Jim Hogg	31 min
Sep 30, 9:10 PM CDT	Areal Flood Advisory	BRO	Brooks	95 min
Sep 30, 9:38 PM CDT	Areal Flood Advisory	BRO	Brooks, Jim Hogg	52 min
Oct 1, 3:28 AM CDT	Flash Flood Watch	BRO	Brooks, Cameron, Hidalgo, Jim Hogg, Kenedy, Willacy	19 hr
Oct 1, 4:11 AM CDT	Special Marine Warning	BRO		38 min
Oct 1, 5:10 AM CDT	Special Marine Warning	BRO		35 min
Oct 1, 5:46 AM CDT	Special Marine Warning	BRO		59 min
Oct 1, 9:14 AM CDT	Special Marine Warning	BRO		31 min
Oct 1, 10:04 AM CDT	Special Marine Warning	BRO		26 min
Oct 1, 10:06 AM CDT	Special Marine Warning	BRO		39 min
Oct 1, 10:48 AM CDT	Special Weather Statement	BRO	Cameron	42 min
Oct 1, 11:20 AM CDT	Areal Flood Advisory	BRO	Cameron	3 hr
Oct 1, 11:29 AM CDT	Special Weather Statement	BRO	Cameron	46 min
Oct 1, 11:48 AM CDT	Special Marine Warning	BRO		42 min
Oct 1, 12:07 PM CDT	Special Weather Statement	BRO	Cameron	23 min
Oct 1, 12:19 PM CDT	Areal Flood Advisory	BRO	Kenedy	5 hr
Oct 1, 12:23 PM CDT	Special Marine Warning	BRO		37 min
Oct 1, 12:38 PM CDT	Special Marine Warning	BRO		37 min
Oct 1, 12:49 PM CDT	Special Weather Statement	BRO	Kenedy	26 min
Oct 1, 1:14 PM CDT	Special Marine Warning	BRO		31 min
Oct 1, 1:29 PM CDT	Areal Flood Advisory	BRO	Hidalgo, Willacy	4 hr
Oct 1, 2:00 PM CDT	Areal Flood Advisory	BRO	Willacy	4 hr
Oct 1, 2:18 PM CDT	Areal Flood Advisory	BRO	Cameron, Hidalgo, Willacy	5 hr
Oct 1, 2:34 PM CDT	Severe Thunderstorm Warning	BRO	Willacy	26 min
Oct 1, 3:05 PM CDT	Flash Flood Warning	BRO	Kenedy, Willacy	3 hr
Oct 1, 3:18 PM CDT	Areal Flood Advisory	BRO	Hidalgo	2 hr
Oct 1, 3:24 PM CDT	Special Weather Statement	BRO	Willacy	36 min
Oct 1, 3:40 PM CDT	Special Marine Warning	BRO		65 min
Oct 1, 3:59 PM CDT	Areal Flood Advisory	BRO	Willacy	2 hr
Oct 1, 3:59 PM CDT	Special Weather Statement	BRO	Cameron	31 min
Oct 1, 4:09 PM CDT	Special Weather Statement	BRO	Cameron	51 min
Oct 1, 4:21 PM CDT	Special Marine Warning	BRO		39 min
Oct 1, 4:24 PM CDT	Flash Flood Warning	BRO	Cameron	111 min
Oct 1, 4:27 PM CDT	Severe Thunderstorm Warning	BRO	Cameron	20 min
Oct 1, 4:37 PM CDT	Special Marine Warning	BRO		23 min
Oct 1, 4:52 PM CDT	Flash Flood Warning	BRO	Cameron	2 hr
Oct 1, 4:52 PM CDT	Special Weather Statement	BRO	Cameron	38 min
Oct 1, 5:05 PM CDT	Severe Thunderstorm Warning	BRO	Cameron	40 min
Oct 1, 5:09 PM CDT	Flash Flood Warning	BRO	Cameron	119 min
Oct 1, 5:12 PM CDT	Flash Flood Warning	BRO	Cameron	3 hr
Oct 1, 5:30 PM CDT	Flash Flood Warning	BRO	Cameron	3 hr
Oct 1, 5:39 PM CDT	Special Weather Statement	BRO	Cameron	51 min
Oct 1, 5:48 PM CDT	Areal Flood Warning	BRO	Hidalgo	87 min
Oct 1, 6:08 PM CDT	Flash Flood Warning	BRO	Cameron	2 hr
Oct 1, 6:54 PM CDT	Special Marine Warning	BRO		17 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.