A persistent and highly moisture-laden tropical pattern set the stage for the flash flooding event from June 19-21. 5+ inches, extreme instability with CAPE often exceeding 2,500-4,500 J/kg, and weak steering winds.
Every event with a place to put it. Tap one for its entry below.
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 episode as NWS CRP wrote it up.
A persistent and highly moisture-laden tropical pattern set the stage for the flash flooding event from June 19-21. Thunderstorms initially developed along the Sierra Madre Oriental and crossed into South Texas on June 19, encountering an environment characterized by extremely high precipitable water values of 2.2-2.5+ inches, extreme instability with CAPE often exceeding 2,500-4,500 J/kg, and weak steering winds. As a stubborn upper-level closed low became established over South Texas, deep tropical moisture continued streaming inland on persistent southeast to east onshore flow. Multiple outflow boundaries, a mid-level vorticity maximum, and the sea breeze provided repeated lifting mechanisms for thunderstorm development. With storm motions generally under 10-15 kt and low-level inflow often stronger than the steering flow, thunderstorms repeatedly back-built, trained, and regenerated over the same locations. Rainfall rates of 2-3+ inches per hour became common, while saturated soils from prior heavy rainfall further reduced infiltration capacity. The combination of near-record atmospheric moisture, slow-moving and training thunderstorms, and several rounds of convection associated with the stationary upper low ultimately led to widespread flash flooding concerns across South Texas and the Coastal Bend through June 21.
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 Corpus Christi, TX wrote its last area forecast discussion before the first event at Jun 19, 5:52 PM CST, 2 hours 19 minutes earlier. Its key messages:
Area Forecast Discussion
National Weather Service Corpus Christi TX
652 PM CDT Fri Jun 19 2026
...New AVIATION...
.KEY MESSAGES...
Updated at 640 PM CDT Fri Jun 19 2026
- Marginal to Slight risk of flash flooding tonight and Saturday,
especially over the Rio Grande Plains
- Marginal risk (level 1 of 5) of strong to severe storms tonight
into Saturday morning for the Brush Country
- Moderate risk of heat-related impacts through Tuesday, heat
indices 105-110
- Moderate risk of rip currents this weekend, dangerous swimming
conditions may exist, use caution in waters
&&
.DISCUSSION...
Issued at 133 PM CDT Fri Jun 19 2026
A few light showers have popped up over South Texas along an outflow
ahead of a stationary front stretching across Central to North
Texas. Additional showers and storms may develop along this outflow
(Live Oak to Duval), especially as the seabreeze converges this
afternoon. Heading into tonight, a cut-off mid-level low develops
over east Mexico, just south of Del Rio; this will act as a
sufficient lifting mechanism along with near 99th percentile
moisture (PWATs 2.25") to produce showers and thunderstorms along
the Rio Grande. If these storms are able to become organized in a
line with DCAPE greater than 1000 J/kg, damaging winds become a
concern. There is a marginal risk of severe storms over the Brush
Country for this reason, as well as a marginal to slight risk of
flash flooding given the saturated soils from recent rainfall.
The aforementioned mid-level low will hang around the Rio Grande
through the day Saturday, allowing for additional scattered showers
and thunderstorms. Therefore, a marginal risk of flash flooding will
continue across all of South Texas through Saturday. The low will
then sag southward into Mexico Saturday night into Sunday, as a mid-
level ridge builds over northern Mexico. This ridge will become the
driver in our weather through next week, bringing warm and rain-free
conditions across the region. Highs will generally range from around
90 along the coast to 100 over the Rio Grande Plains, with lows
remaining in the 70s.
In addition to our severe and flash flooding concerns, heat will
remain a threat. There is a moderate risk of heat-related impacts
through Tuesday with heat indices ranging from 105-110 each
afternoon. For heat safety tips please visit: weather.gov/heat.
Lastly, moderate onshore flow and increased swell periods have led
to a moderate risk of rip currents, please use caution if heading
out into the waters and remember "wave, yell, swim parallel."
&&
.AVIATION...
(00Z TAFS)
Issued at 640 PM CDT Fri Jun 19 2026
A mix of VFR and MVFR conditions currently across S TX will become
prevailing MVFR through the evening. Main concern will be showers
and thunderstorms. Radar is currently indicating strong storms in
Mexico west of LRD moving eastward. These storms are expected to
reach LRD between 01-03Z and will likely continue through a
majority of the night. Storms are expected to reach COT after
02Z. The Storms Prediction Center has a marginal risk of severe
storms across these TAF sites and clips the ALI TAF site
overnight. The storms are expected to weaken as they move toward
the coast. There is a chance for additional showers and
thunderstorms across S TX through Saturday afternoon. LIFR/IFR
conditions and strong gusty winds can be expected in and around
storms through most of the TAF cycle. Rain chances are expected to
diminish Saturday evening.
&&
.MARINE...
Issued at 133 PM CDT Fri Jun 19 2026
A moderate to fresh (BF 4-5) south to southeasterly breeze will
generally persist through the middle of next week. There is a period
of stronger winds Sunday through Monday that will likely result in
advisory conditions with seas up to 7 feet. Outside of this period,
seas will generally be between 4-6 feet. Low rain chances, 20-30%,
Saturday and Saturday night will be followed by mainly rain-free
conditions through the middle of next week.
&&
.PRELIMINARY POINT TEMPS/POPS...
Corpus Christi 81 90 81 91 / 30 40 20 0
Victoria 79 91 78 92 / 30 40 30 20
Laredo 78 95 78 98 / 50 30 30 0
Alice 79 91 78 94 / 30 50 30 10
Rockport 83 91 83 91 / 30 40 30 20
Cotulla 78 94 77 97 / 50 50 20 0
Kingsville 80 90 79 92 / 30 50 20 10
Navy Corpus 84 90 83 90 / 30 40 20 10
&&
.CRP WATCHES/WARNINGS/ADVISORIES...
TX...Heat Advisory until 8 PM CDT this evening for TXZ229>234-239>247-
342>347-442-443-447.
GM...None.
&&
DISCUSSION...EMF/94
AVIATION...TE/81Special Weather Statement
National Weather Service Corpus Christi TX
739 PM CDT Fri Jun 19 2026
TXZ239-200130-
Webb TX-
739 PM CDT Fri Jun 19 2026
...STRONG THUNDERSTORMS WILL IMPACT CENTRAL WEBB COUNTY THROUGH 830
PM CDT...
At 739 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Chupadera Ranch Airport to near United
South High School. Movement was northeast at 40 mph.
HAZARD...Wind gusts up to 40 mph and pea size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.
Locations impacted include...
Laredo, Rio Bravo, El Cenizo, Texas A&M, Las Tiendas, Laredo
International Airport, Botines, Unitec Industrial Park, La Esperanza
Ranch Airport, Ranchos Penitas West, Chupadera Ranch Airport,
Columbia Bridge, United South High School, Ranchitos Las Lomas, St
Augustine High School South Laredo, Doctors Hospital Of Laredo,
Laredo Country Club, Laredo Community College, Orvil, and Callaghan.
This includes the following highways...
Interstate 35 between mile markers 1 and 35.
US Highway 59 between mile markers 804 and 824.
US Highway 83 between mile markers 668 and 728.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 2820 9953 2767 9910 2730 9953 2748 9948
2750 9953 2757 9951 2761 9955 2760 9958
2764 9960 2763 9964 2766 9967 2766 9971
2778 9982 2776 9984 2780 9988 2794 9994
2798 9993 2800 9999 2815 10009 2820 10021
TIME...MOT...LOC 0039Z 206DEG 36KT 2812 10008 2743 9945
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH
JCPSpecial Weather Statement
National Weather Service Corpus Christi TX
830 PM CDT Fri Jun 19 2026
TXZ229-239-200230-
Webb TX-La Salle TX-
830 PM CDT Fri Jun 19 2026
...STRONG THUNDERSTORMS WILL IMPACT SOUTHWESTERN LA SALLE AND WEBB
COUNTIES THROUGH 930 PM CDT...
At 830 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near La Esperanza Ranch Airport to near Rio
Bravo. Movement was northeast at 35 mph.
HAZARD...Wind gusts up to 40 mph and pea size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.
Locations impacted include...
Laredo, Encinal, Rio Bravo, El Cenizo, Texas A&M, Las Tiendas, Laredo
International Airport, Botines, Unitec Industrial Park, La Esperanza
Ranch Airport, Ranchos Penitas West, Oilton, Columbia Bridge, United
South High School, Aguilares, Ranchitos Las Lomas, St Augustine High
School South Laredo, Doctors Hospital Of Laredo, Laredo Country Club,
and Laredo Community College.
This includes the following highways...
Interstate 35 between mile markers 1 and 51.
US Highway 59 between mile markers 794 and 824.
US Highway 83 between mile markers 668 and 734.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 2726 9949 2730 9949 2731 9954 2741 9949
2749 9948 2750 9953 2757 9951 2761 9955
2760 9959 2764 9960 2763 9964 2766 9967
2766 9971 2771 9976 2819 9990 2820 9940
2834 9939 2752 9883 2728 9934 2732 9937
TIME...MOT...LOC 0130Z 209DEG 30KT 2803 9959 2738 9944
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH
JCPThe Corpus Christi radar (KCRP), 195 km away, was scanning. The volume nearest the first event began at 02:11 UTC.
9 flash flood. Local standard time, as filed.
Laredo PD reported that the intersection of Ejido and Potomac was closed due to flooding. Time estimated from radar.
Report received from mPING.
Corrects previous flash flood report from 4 miles south of Saint Paul to update timing. Report from mPING.
Report from mPING: Street/road flooding; Street/road closed; Vehicles stranded.
FM629 was closed between Bonnie View and Woodsboro.
Water over roads in Holiday Beach. Time estimated.
Delayed report of water covering Highway 35.
Street flooding reported on the west side of Rockport.
Standing water reported at the intersection of Texas State Highway 188 and County Road 85. Time was estimated by radar.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2026Every state in 2026This day in weather historyWarnings in Texas, June 2026
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: 1332594, 1332595, 1332596, 1332597, 1332598, 1332599, 1332601, 1332602, 1332603.