Alert archive / Texas / Flash Flood Warnings in 2026

Flash Flood Warning 1, NWS Corpus Christi, TX

May 21, 2026Webb County, Texas

NWS Corpus Christi, TX issued this flash flood warning at May 21, 2026, 1:45 AM CDT for Webb County, Texas. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 21, 2026, 1:45 AM CDT (06:45 UTC)
Expired: May 21, 2026, 3:45 AM CDT
In force: 2 hr
Issued by: NWS Corpus Christi, TX
Area: Storm-based polygon
Flood severity: None

County Webb County, TX

The radar

The Corpus Christi radar (KCRP), 179 km from the middle of the area, began a volume at 06:46 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.

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 6.8 hours before the alert went out and 196 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: 1962 J/kg
Mixed-layer CIN: -27 J/kg
Mixed-layer LCL: 887 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 32 m²/s²
0-3 km storm-relative helicity: 20 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 4.3

Open this sounding in Storm Lab

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 Corpus Christi, TX wrote its last area forecast discussion before this flash flood warning went out at May 20, 6:53 PM CDT, 6 hours 52 minutes earlier.

Area forecast discussion, May 20, 6:53 PM CDT, 6 hours 52 minutes before

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In the hours before

Special weather statement, May 20, 11:12 PM CDT, 2 hours 33 minutes before

Special Weather Statement
National Weather Service Corpus Christi TX
1112 PM CDT Wed May 20 2026

TXZ239-240-210445-
Webb TX-Duval TX-
1112 PM CDT Wed May 20 2026

...A STRONG THUNDERSTORM WILL IMPACT SOUTHWESTERN DUVAL AND
SOUTHEASTERN WEBB COUNTIES THROUGH 1145 PM CDT...

At 1111 PM CDT, Doppler radar was tracking a strong thunderstorm near
Jim Hogg County Airport, or 7 miles west of Hebbronville, moving
north at 20 mph.

HAZARD...Wind gusts up to 40 mph and penny 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...
Oilton, Mirando City, and Bruni.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 2750 9903 2757 9874 2736 9867 2735 9880
      2727 9880 2727 9891
TIME...MOT...LOC 0411Z 163DEG 18KT 2730 9881

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...40 MPH

EMF

Special weather statement, May 21, 12:20 AM CDT, 1 hour 25 minutes before

Special Weather Statement
National Weather Service Corpus Christi TX
1220 AM CDT Thu May 21 2026

TXZ229-239-210545-
Webb TX-La Salle TX-
1220 AM CDT Thu May 21 2026

...A STRONG THUNDERSTORM WILL IMPACT SOUTHWESTERN LA SALLE AND
NORTHEASTERN WEBB COUNTIES THROUGH 1245 AM CDT...

At 1220 AM CDT, Doppler radar was tracking a strong thunderstorm 14
miles north of Ranchitos Las Lomas, or 17 miles southeast of Encinal,
moving north at 30 mph.

HAZARD...Wind gusts up to 40 mph and nickel 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...
Encinal.

This includes Interstate 35 between mile markers 31 and 40.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 2775 9895 2773 9933 2806 9943 2809 9903
TIME...MOT...LOC 0520Z 168DEG 26KT 2785 9917

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...40 MPH

EMF

The office that day

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

Issued	Product	Office	Counties	Lasted
May 20, 11:12 PM CDT	Special Weather Statement	CRP	Jim Hogg	33 min
May 21, 12:20 AM CDT	Special Weather Statement	CRP	Webb	25 min
May 21, 2:39 AM CDT	Special Weather Statement	CRP	Duval	36 min
May 21, 3:04 AM CDT	Severe Thunderstorm Warning	CRP	Duval, Jim Wells, Kleberg	41 min
May 21, 3:10 AM CDT	Areal Flood Advisory	CRP	Duval, Webb	3 hr
May 21, 3:25 AM CDT	Tornado Warning	CRP	Duval, Jim Wells, Kleberg	27 min
May 21, 3:44 AM CDT	Severe Thunderstorm Warning	CRP	Duval, Jim Wells, Kleberg, Nueces	46 min
May 21, 3:59 AM CDT	Flash Flood Warning	CRP	Duval, Jim Wells	3 hr
May 21, 4:41 AM CDT	Flash Flood Warning	CRP	Duval, Jim Wells, Kleberg, Nueces	3 hr
May 21, 4:51 AM CDT	Special Weather Statement	CRP	Kleberg, Nueces	54 min
May 21, 5:08 AM CDT	Special Marine Warning	CRP		97 min
May 21, 5:18 AM CDT	Flash Flood Warning	CRP	Jim Wells, Nueces, San Patricio	3 hr
May 21, 5:31 AM CDT	Special Weather Statement	CRP	Nueces	44 min
May 21, 5:42 AM CDT	Flash Flood Warning	CRP	Kleberg, Nueces, San Patricio	3 hr
May 21, 6:06 AM CDT	Special Marine Warning	CRP		114 min
May 21, 6:10 AM CDT	Severe Thunderstorm Warning	CRP	Aransas, Nueces, San Patricio	50 min
May 21, 6:32 AM CDT	Areal Flood Advisory	CRP	Bee, Goliad, Refugio, San Patricio	118 min
May 21, 6:53 AM CDT	Special Weather Statement	CRP	Aransas	52 min
May 21, 7:05 AM CDT	Flash Flood Warning	CRP	Aransas, Calhoun, Refugio, Victoria	3 hr
May 21, 7:22 AM CDT	Special Marine Warning	CRP		83 min
May 21, 8:10 AM CDT	Flash Flood Warning	CRP	Goliad, Refugio, Victoria	3 hr

Nearby

Flash Flood Warnings in Texas, 2026 Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.