Alert archive / Texas / Flash Flood Warnings in 2026
Flash Flood Warning 3, NWS Brownsville, TX
NWS Brownsville, TX issued this flash flood warning at Jun 15, 2026, 9:56 AM CDT for Hidalgo County, Texas. It was in force for 2 hr. 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
- Jun 15, 2026, 9:56 AM CDT (14:56 UTC)
- Expired
- Jun 15, 2026, 12:24 PM CDT
- In force
- 2 hr
- Issued by
- NWS Brownsville, TX
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Flood severity
- None
County Hidalgo County, TX
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 15, 10:48 AM CDT | FLOOD | 1 N Weslaco, TX | Traffic cameras show standing water along the frontage road near Bridge Ave in Weslaco. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
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.
The nearest sounding before it
Brownsville Intl, TX (KBRO), launched 12:00Z, 2.9 hours before the alert went out and 62 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.
- Mixed-layer CAPE
- 1668 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 730 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 4 m²/s²
- 0-3 km storm-relative helicity
- 69 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
212
WGUS54 KBRO 151456
FFWBRO
TXC215-151800-
/O.NEW.KBRO.FF.W.0003.260615T1456Z-260615T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Brownsville TX
956 AM CDT Mon Jun 15 2026
The National Weather Service in Brownsville has issued a
* Flash Flood Warning for...
Southeastern Hidalgo County in deep south Texas...
* Until 100 PM CDT.
* At 956 AM 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 1 to 3 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...Life threatening flash flooding. Thunderstorms producing
flash flooding.
SOURCE...Radar indicated.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
* Some locations that will experience flash flooding include...
Weslaco, Donna, Mercedes, Progreso, Llano Grande, Estero Llano
Grande State Park, Weslaco East High School, Black Elementary
School, Knapp Medical Center, Isaac D. Rodriguez Park, Villa Verde,
Weslaco Public Library, Harlon Block Sports Complex, Weslaco Fire
Department Station Two, Progreso High School, Weslaco City Park,
Weslaco City Hall, South Texas High School For Health Professions
and Llano Grande Country Club.
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 9807 2607 9808 2621 9806 2620 9786
2607 9786 2606 9787 2607 9788 2606 9793
2605 9794 2606 9795 2605 9797 2607 9798
2606 9801 2607 9801 2606 9802 2607 9803
2604 9804 2605 9806 2604 9808
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL RATE...1-3 INCHES IN 1 HOUR
$$3 follow-up statements
684
WGUS74 KBRO 151537
FFSBRO
Flash Flood Statement
National Weather Service Brownsville TX
1037 AM CDT Mon Jun 15 2026
TXC215-151800-
/O.CON.KBRO.FF.W.0003.000000T0000Z-260615T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Hidalgo TX-
1037 AM CDT Mon Jun 15 2026
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1 PM CDT THIS
AFTERNOON FOR SOUTHEASTERN HIDALGO COUNTY...
At 1037 AM CDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Between 2.5 and 6 inches of rain have
fallen. The expected rainfall rate is 0.5 to 1.5 inches in 1 hour.
Additional rainfall amounts of 0.5 to 1.5 inches are possible in the
warned area. Flash flooding is ongoing or expected to begin shortly.
HAZARD...Life threatening flash flooding. Thunderstorms producing
flash flooding.
SOURCE...Radar indicated.
IMPACT...Life threatening flash flooding of creeks and streams, urban
areas, highways, streets and underpasses.
Some locations that will experience flash flooding include...
Weslaco, Donna, Mercedes, Progreso, Llano Grande, Estero Llano
Grande State Park, Weslaco East High School, Black Elementary
School, Knapp Medical Center, Isaac D. Rodriguez Park, Villa Verde,
Weslaco Public Library, Harlon Block Sports Complex, Weslaco Fire
Department Station Two, Progreso High School, Weslaco City Park,
Weslaco City Hall, South Texas High School For Health Professions
and Llano Grande Country Club.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 2605 9807 2607 9808 2621 9806 2620 9786
2607 9786 2606 9787 2607 9788 2606 9793
2605 9794 2606 9795 2605 9797 2607 9798
2606 9801 2607 9801 2606 9802 2607 9803
2604 9804 2605 9806 2604 9808
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL RATE...0.5-1.5 INCHES IN 1 HOUR
$$322
WGUS74 KBRO 151628
FFSBRO
Flash Flood Statement
National Weather Service Brownsville TX
1128 AM CDT Mon Jun 15 2026
TXC215-151800-
/O.CON.KBRO.FF.W.0003.000000T0000Z-260615T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Hidalgo TX-
1128 AM CDT Mon Jun 15 2026
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1 PM CDT THIS
AFTERNOON FOR SOUTHEASTERN HIDALGO COUNTY...
At 1128 AM CDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Between 3 and 6.5 inches of rain have
fallen. Additional rainfall amounts up to 0.1 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...
Weslaco, Donna, Mercedes, Progreso, Llano Grande, Estero Llano
Grande State Park, Weslaco East High School, Black Elementary
School, Knapp Medical Center, Isaac D. Rodriguez Park, Villa Verde,
Weslaco Public Library, Harlon Block Sports Complex, Weslaco Fire
Department Station Two, Progreso High School, Weslaco City Park,
Weslaco City Hall, South Texas High School For Health Professions
and Llano Grande Country Club.
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 9807 2607 9808 2621 9806 2620 9786
2607 9786 2606 9787 2607 9788 2606 9793
2605 9794 2606 9795 2605 9797 2607 9798
2606 9801 2607 9801 2606 9802 2607 9803
2604 9804 2605 9806 2604 9808
FLASH FLOOD...RADAR INDICATED
$$160
WGUS74 KBRO 151724
FFSBRO
Flash Flood Statement
National Weather Service Brownsville TX
1224 PM CDT Mon Jun 15 2026
TXC215-151734-
/O.CAN.KBRO.FF.W.0003.000000T0000Z-260615T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Hidalgo TX-
1224 PM CDT Mon Jun 15 2026
...FLASH FLOOD WARNING IS CANCELLED FOR SOUTHEASTERN HIDALGO
COUNTY...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
A Flood Watch remains in effect until 700 AM CDT Thursday for a
portion of Deep South Texas.
&&
LAT...LON 2605 9807 2607 9808 2621 9806 2620 9786
2607 9786 2606 9787 2607 9788 2606 9793
2605 9794 2606 9795 2605 9797 2607 9798
2606 9801 2607 9801 2606 9802 2607 9803
2604 9804 2605 9806 2604 9808
$$What forecasters said that day
The local office's own words before this flash flood warning went out, 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 this flash flood warning went out at Jun 15, 6:22 AM CDT, 3 hours 34 minutes earlier. Its key messages:
- Updated at 619 AM CDT Mon Jun 15 2026
- A Flood Watch is in effect from Monday afternoon through Wednesday morning. Numerous Flash Floods are likely Monday into Tuesday.
- There is a Marginal (level 1 of 4) Risk of Excessive Rainfall across Deep South Texas overnight. There is a Slight (level 2 of 4) to Moderate (level 3 of 4) Risk of Excessive Rainfall across the area Monday and Monday night. A Slight (level 2 of 4) Risk of Excessive Rainfall across all of Deep South Texas Tuesday and Tuesday night. A Marginal to Slight Risk of Excessive Rainfall continues across much of the region Wednesday into Wednesday night with a Marginal Risk lingering along the coast on Thursday.
- A Moderate to Major (levels 2-3 of 4) Heat Risk is forecast Thursday into Saturday. Heat Advisories may be needed Thursday and Friday.
- The National Hurricane Center continues a low chance (30%) of tropical development over the northwestern Gulf over the next 7 days.
Area forecast discussion, Jun 15, 6:22 AM CDT, 3 hours 34 minutes before
Area Forecast Discussion...UPDATED
National Weather Service Brownsville TX
622 AM CDT Mon Jun 15 2026
...New AVIATION...
.KEY MESSAGES...
Updated at 619 AM CDT Mon Jun 15 2026
- A Flood Watch is in effect from Monday afternoon through Wednesday
morning. Numerous Flash Floods are likely Monday into Tuesday.
- There is a Marginal (level 1 of 4) Risk of Excessive Rainfall across
Deep South Texas overnight. There is a Slight (level 2 of 4) to
Moderate (level 3 of 4) Risk of Excessive Rainfall across the
area Monday and Monday night. A Slight (level 2 of 4) Risk of
Excessive Rainfall across all of Deep South Texas Tuesday and
Tuesday night. A Marginal to Slight Risk of Excessive Rainfall
continues across much of the region Wednesday into Wednesday
night with a Marginal Risk lingering along the coast on
Thursday.
- A Moderate to Major (levels 2-3 of 4) Heat Risk is forecast Thursday
into Saturday. Heat Advisories may be needed Thursday and
Friday.
- The National Hurricane Center continues a low chance (30%) of tropical
development over the northwestern Gulf over the next 7 days.
&&
.DISCUSSION...
Issued at 1043 PM CDT Sun Jun 14 2026
The combination of an enhanced seabreeze, a low of low pressure over
northeastern Mexico/Deep South Texas and the interaction of a weak
front boundary will lead to unsettled weather through at least
midweek. Deep tropical moisture will continue to surge into Deep
South Texas tonight into Tuesday. This evening's 0Z Brownsville
sounding indicated a PWAT value of 2.38 inches. Rain chances are
expected to increase after midnight and there is a moderate to high
(50-70%) chance of rain overnight, mainly across the Low to middle
Rio Grande Valley and along the coast. The latest HRRR suggests that
some activity may develop and move into Cameron County around 3 AM.
There is a moderate to high (50-80%) chance of rain showers and
isolated thunderstorms on Monday, especially in the afternoon and
early evening. The forecast rainfall amounts between 1.5 to 3
inches, locally higher. PWATS surge between 2.5 to 2.75 inches
across the Rio Grande Plains Monday evening. Rain chances increase
to high (75-90%) Monday night. Numerous flash floods are likely
across Deep South Texas with scattered flash flooding possible near
the coast.
High (80-90%) rain chances continue Tuesday with scattered flash
flooding possible. Rain chances (30-60%) Tuesday night decreasing
from west to east. Forecast rainfall amounts between 1.5 to 3
inches, locally higher. Rain chances linger Wednesday into Wednesday
night as timing remains uncertain between the model guidance. There
is a low to moderate (20-50%) chance of rain, especially near the
coast on Wednesday with a low chance Wednesday night.
The forecast rainfall totals across the area from Monday into
Wednesday are 3 to 6 inches, with locally higher amounts of 8 inches
or higher where showers or thunderstorms persist.
The trough of low pressure located over northeastern Mexico could re-
emerge over the Gulf late Tuesday into Wednesday. The National
Hurricane Center has a 30% chance for tropical development through
day 7. Any development at that point would likely have minimal
impact on Deep South Texas. However, some increased swell along the
coast is possible, which could result in minor coastal flooding and
increased rip current risk.
The increased cloud cover and rain chances will lead to slightly
lower daytime temperatures through midweek. Drier weather returns on
Thursday as high humidity continues. There is a Moderate to Major
(levels 2-3 of 4) Heat Risk Thursday into Saturday. Heat Advisories
may be needed Thursday and Friday.
&&
.AVIATION...
(12Z TAFS)
Issued at 619 AM CDT Mon Jun 15 2026
The latest issuance of TAFs reflect current radar trends as well
as shifts in the HRRR model guidance. Overall, VFR will remain for
a majority of the period. Prevailing TSRA will occur tonight as
deep tropical moisture interacts with low pressure in the middle
layers of the atmosphere.
&&
.MARINE...
Issued at 1043 PM CDT Sun Jun 14 2026
Generally favorable marine conditions are forecast to continue
through Tuesday. Showers and thunderstorms will increase along the
Lower Texas Coast and the Gulf waters tonight through mid to late
week. Adverse to hazardous conditions could return Wednesday and
Thursday, and Small Craft Advisories or Small Craft Should Exercise
Caution headlines may be needed.
&&
.PRELIMINARY POINT TEMPS/POPS...
BROWNSVILLE 90 79 85 77 / 50 70 80 60
HARLINGEN 89 76 84 74 / 60 80 90 60
MCALLEN 90 77 84 77 / 80 90 90 50
RIO GRANDE CITY 90 75 84 74 / 80 90 90 40
SOUTH PADRE ISLAND 87 81 85 80 / 40 60 70 60
BAYVIEW/PORT ISABEL 89 78 85 77 / 50 70 80 60
&&
.BRO WATCHES/WARNINGS/ADVISORIES...
TX...Flood Watch from 1 PM CDT this afternoon through Wednesday
morning for TXZ248>255-351-353>355-451-454-455.
GM...None.
&&The office that day
Everything else NWS Brownsville, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 15, 5:59 AM CDT | Areal Flood Advisory | BRO | Hidalgo | 61 min |
| Jun 15, 6:55 AM CDT | Areal Flood Advisory | BRO | Hidalgo | 5 hr |
| Jun 15, 7:00 AM CDT | Flash Flood Warning | BRO | Cameron, Hidalgo | 3 hr |
| Jun 15, 9:30 AM CDT | Areal Flood Advisory | BRO | Cameron | 3 hr |
| Jun 15, 10:06 AM CDT | Areal Flood Advisory | BRO | Hidalgo, Willacy | 118 min |
| Jun 15, 4:44 PM CDT | Areal Flood Advisory | BRO | Zapata | 98 min |
| Jun 15, 4:50 PM CDT | Areal Flood Advisory | BRO | Jim Hogg, Starr, Zapata | 4 hr |
| Jun 15, 5:27 PM CDT | Flash Flood Warning | BRO | Starr | 115 min |
| Jun 15, 6:01 PM CDT | Areal Flood Advisory | BRO | Jim Hogg, Zapata | 3 hr |
| Jun 15, 6:20 PM CDT | Areal Flood Advisory | BRO | Hidalgo, Jim Hogg, Starr | 6 hr |
Nearby
Flash Flood Warnings in Texas, 2026Every flash flood warning in 2026
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.