Texas, 2026Flash Flood in Texas, June 5, 2026
June 5, 2026 · NWS BRO · 1 event in 1 county or zone
The afternoon sea breeze, combined with a weak upper level disturbance approaching the Lower Texas Coast, triggered two bands of slow-moving thunderstorms that dropped more than 3 of rainfall in a short period of time. One band, across the west half of Brownsville, created localized flash flooding with water between 2 and 3 feet in some areas.
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- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 1
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The afternoon sea breeze, combined with a weak upper level disturbance approaching the Lower Texas Coast, triggered two bands of slow-moving thunderstorms that dropped more than 3 of rainfall in a short period of time. One band, across the west half of Brownsville, created localized flash flooding with water between 2 and 3 feet in some areas. A second band across the sand flats between SR 48 and SR 100 (south of Los Fresnos) dropped an estimated 5+ of rainfall - but no significant flooding was reported, even in Los Fresnos, where more than 3 fell.
What forecasters said that day
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Brownsville, TX wrote its last area forecast discussion before the first event at Jun 5, 11:17 AM CST, 4 hours 43 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, Jun 5, 11:17 AM CST, 4 hours 43 minutes before
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, Cameron
- When
- June 5, 4:00 PM CST to 5:00 PM CST
- Where
- Cameron County, 1.98 mi NW of Brownsville to 1.47 mi WNW of Brownsville
- Cause
- Heavy Rain
- Reported by
- Social Media
- Coordinates
- 25.942, -97.520
A slow moving thunderstorm with torrential rainfall dropped 3.64 in about an hour across west Brownsville, just south of Los Ebanos Blvd. and west of Barnard Road. Similar rainfall likely occurred in a flood-prone intersection along the IH-69E frontage road and shopping centers at E. Price Blvd, where video from social media showed cars stuck in knee deep water. An NWS employee reported over a foot of water with difficult to near-impassible driving along Wild Rose Lane, west of Business 77 (Central Blvd.).
- Flash Flood
- Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
- Flash Flooding and Flooding in Texas, June 5 to 7, 2026$214,000 · 1.25 in hail · 27 events
- Tornado and Hail in Wisconsin, June 5, 2026$105,000 · EF0 · 9 events
- Hail in Minnesota, June 5, 2026$72,000 · 1.75 in hail · 2 events
- Flash Flooding and Flood in Nebraska, June 5 to 6, 2026$10,000 · 2 in hail · 23 events
- Flash Flooding and Damaging Wind in Texas, June 5, 2026$10,000 · 52 kt wind · 17 events
- Hail and Damaging Winds in Iowa, June 5, 20261 in hail · 13 events
- Hail and Damaging Wind in Minnesota, June 5, 20261.5 in hail · 4 events
- Marine Thunderstorm Winds in Lake Michigan, June 5, 20264 events
- Damaging Winds in Oklahoma, June 5, 202656 kt wind · 3 events
- Marine Lightning in Gulf of Mexico, June 5, 2026$5,000 · 2 events
- Flash Flood in Nebraska, June 5, 20261 event
- Flood in Florida, June 5, 20261 event
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 1355129.