Flash Flood Warning 1, NWS Brownsville, TX

Issued

Jun 5, 2026, 5:24 PM CDT (22:24 UTC)

Expired

Jun 5, 2026, 7:30 PM CDT

In force

2 hr

Issued by

NWS Brownsville, TX

Area

Storm-based polygon

Flood severity

None

County Cameron County, TX

The Brownsville radar (KBRO), 9 km from the middle of the area, began a volume at 22:27 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.

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

Verified. The Iowa Environmental Mesonet's Cow matched 2 storm reports to this flash flood warning; the first came 21 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

447 
WGUS54 KBRO 052224
FFWBRO
TXC061-060030-
/O.NEW.KBRO.FF.W.0001.260605T2224Z-260606T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Brownsville TX
524 PM CDT Fri Jun 5 2026

The National Weather Service in Brownsville has issued a

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

* Until 730 PM CDT.

* At 524 PM CDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Between 1 and 2 inches of rain
  have fallen. The expected rainfall rate is 2 inches in 1 hour.
  Additional rainfall amounts up 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 indicated.

  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...
  Downtown Brownsville, Southmost, Brownsville, Lincoln Park, Stell
  Middle School, Brownsville Public Library Main Branch, Valley
  Baptist Medical Center Brownsville, Joe And Tony Oliveira Park,
  Valley International Country Club, Pace High School, Martin
  Elementary School, Brownsville Fire Department Station Two, Sams
  Memorial Stadium, Garden Park Elementary School, Dean Porter Park,
  B I S D Administration Building, Gladys Porter Zoo, Sunrise Mall,
  Linear Park and Putegnat Elementary 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 2597 9759 2597 9749 2598 9749 2585 9744
      2585 9745 2587 9745 2587 9746 2588 9746
      2588 9747 2589 9747 2588 9750 2590 9750
      2589 9752 2591 9753 2592 9753 2592 9754
      2594 9755 2593 9756 2594 9758 2596 9758

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

$$

ATE

NWS Brownsville, TX wrote its last area forecast discussion before this flash flood warning went out at Jun 5, 12:17 PM CDT, 5 hours 7 minutes earlier. Its key messages:

• Updated at 1212 PM CDT Fri Jun 5 2026 * Daily afternoon showers remain possible through the weekend due to unsettled weather pattern. * Moderate Heat Risk returns next week as mid-level ridge returns.

Area Forecast Discussion
National Weather Service Brownsville TX
1217 PM CDT Fri Jun 5 2026

...New DISCUSSION, AVIATION, MARINE...

.KEY MESSAGES...
Updated at 1212 PM CDT Fri Jun 5 2026

* Daily afternoon showers remain possible through the weekend due
  to unsettled weather pattern.

* Moderate Heat Risk returns next week as mid-level ridge returns.

&&

.DISCUSSION...
Issued at 1212 PM CDT Fri Jun 5 2026

Low chances (30% or less) of rain continue through the start of next
week as the daily seabreeze activity is expected to bring some
showers and thunderstorm activity each day. The higher chances of
rain are generally for the coastal counties and chances of rain
decrease further inland. Models continue to indicate that a mid-
level ridge will move over Deep South Texas and the Rio Grande
Valley by next week allowing for more rain-free conditions to set
up. However, that does not mean that a rogue shower or two is out of
the question.

The southeasterly flow at the surface along with the day time
heating will continue to provide some level of support for the
development for showers and thunderstorms over the next several
days. PWAT values continue to linger in the range of 1.8 to 2.5
inches showing that there is plenty of moisture in the environment,
thus it is possible that some showers and thunderstorms could even
produce heavy downpours at times. Coverage is expected to be
isolated to scattered since there is very little in actual forcing
in the environment at this time.

Moving into next week, with the return of a mid-level ridge the
focus of the weather will return to the potential heat related
issues. As the surface flow will continue to remain out the
southeast for the early part of next week, that means that the flow
of moisture will continue, but the mid-level ridge will trap that
moisture near the surface. Thus the relative humidity will be higher
next week. At this time, the heat indices do mostly stay in the
range of 105 to 108 at this point. However this will still mean that
there is a moderate (level 2 of 4) Heat Risk for the region next
week.

&&

.AVIATION...
(18Z TAFS)
Issued at 1212 PM CDT Fri Jun 5 2026

Generally VFR conditions should continue through the along with
light southeasterly winds. While afternoon showers and
thunderstorms are possible, confidence was not high enough to
include in the TAF package.

&&

.MARINE...
Issued at 1212 PM CDT Fri Jun 5 2026

Gentle to moderate onshore flow and low moderate seas are
expected through the period. However, showers and thunderstorms
remain possible through the weekend. Given the amount of moisture in
the environment, it is possible that some showers and thunderstorms
could produce locally elevated winds and seas. However, the chances
of rain will decrease next week with a mid-level ridge moving over
the Lower Texas Coast.

&&

.PRELIMINARY POINT TEMPS/POPS...
BROWNSVILLE             80  90  81  90 /  20  10  20  20
HARLINGEN               76  90  77  91 /  20  10  10  20
MCALLEN                 78  92  79  92 /  30  10  10  10
RIO GRANDE CITY         75  93  77  94 /  30   0  10   0
SOUTH PADRE ISLAND      82  86  83  86 /  20  10  20  10
BAYVIEW/PORT ISABEL     79  89  80  89 /  20  10  10  20

&&

.BRO WATCHES/WARNINGS/ADVISORIES...
TX...None.
GM...None.
&&

SHORT TERM...64-Katz
LONG TERM....64-Katz
AVIATION...64-Katz

Flash Flood Warnings in Texas, 2026Every flash flood warning in 2026

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; radar from the NEXRAD Level II archive.