Texas, 2018

Flooding in Texas, September 16 to 22, 2018

September 16 to 22, 2018 · NWS CRP · 2 events in 2 counties and zones

Heavy rains across Nueces County caused major flooding along Oso Creek on the 16th. Heavy rains across the Brush Country led to flooding along the Nueces River by the latter part of the month.

Where it happened

Every event with a place to put it. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

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The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
2

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.

What happened

The episode as NWS CRP wrote it up.

Heavy rains across Nueces County caused major flooding along Oso Creek on the 16th. Heavy rains across the Brush Country led to flooding along the Nueces River by the latter part of the month. Nueces River reached major flood stage near Tilden on the 21st.

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 Corpus Christi, TX wrote its last area forecast discussion before the first event at Sep 15, 5:31 PM CST, 6 hours 29 minutes earlier.

Area forecast discussion, Sep 15, 5:31 PM CST, 6 hours 29 minutes before
Area Forecast Discussion
National Weather Service Corpus Christi TX
631 PM CDT Sat Sep 15 2018

.DISCUSSION...

See aviation discussion below for the 00Z TAFs.

&&

.AVIATION...

Numerous showers and isolated thunderstorms will continue off and
on tonight through Sunday morning. Am expecting to see a lull this
evening, then additional convection is expected to develop late
tonight into early Sun morning. The focus for the heavier
rainfall is expected to shift farther west tonight through Sun
with diminishing rain chances expected across the VCT area by mid
morning Sun. A mix of VFR and MVFR conditions will continue
tonight with possibly IFR conditions with the heavier downpours.

&&

.PREVIOUS DISCUSSION... /Issued 431 PM CDT Sat Sep 15 2018/

SHORT TERM (Tonight through Sunday)...

Copious amounts of moisture continues to advect across S TX as a
trough slowly moves westward. This will continue through tonight
and Sunday with several bands of heavy rainfall maintaining the
flash flood threat, especially for eastern CWA early this evening
and all of S TX overnight into Sunday morning. Therefore extended
the Flash Flood Watch for all of S TX through tonight and Sun
morning. Models prog the main focus/heavier precip to shift west
through Sunday afternoon with rain chances decreasing across the
east, but still in the chc category. The FFA may need to be
extended Sunday for the western CWA as the heavier rain shifts
west.

Tides continue to run approx 1-1.5 feet above MSL, including in
the bays. Thus, have expanded the Coastal Flood Advisory to
include areas along the bays and intracoastal waters, and have
extended the Advisory through Sun morning to include high tide
overnight/Sun morning. The associated long period swells will also
maintain the high risk of dangerous rip currents through Sun
morning.

LONG TERM (Sunday Night through Saturday)...

Bulk of the tropical moisture should be west of the forecast area by
the beginning of this long term period. Will linger some 30 pops
west with the edge of the 2"+ pwat air still hanging just east of
the Rio Grande. Will continue upper level weakness over the region
through at least Tuesday and maintain modest deep moisture to linger
a slight chance pop each day, generally with the daily sea breeze.
Late week pattern hasn't changed much. still differences in models
as far as the upper level pattern. GFS shifts ridge well to the east
with upper troughing reaching well into Texas.  However, the ECMWF
is much more zonal. Regardless...will still expect moisture to
increase back into the region by the weekend and should result in a
little more coverage of shower/storm activity by Friday.

Temperatures should increase a few degrees...back to near normal
levels...generally in the low 90s for much of the week. As moisture
increases late week will lower temperatures again a degree or two.

&&

.PRELIMINARY POINT TEMPS/POPS...
Corpus Christi    75  88  76  90  76  /  60  60  10  20  10
Victoria          73  89  73  92  73  /  30  40  10  20  10
Laredo            75  89  75  92  75  /  60  60  30  20  10
Alice             74  90  74  92  73  /  60  60  10  20  10
Rockport          76  87  78  88  78  /  50  40  10  20  10
Cotulla           73  88  73  91  74  /  60  60  20  20  10
Kingsville        74  88  75  92  75  /  60  60  20  20  10
Navy Corpus       79  87  79  89  79  /  60  60  20  20  10

&&

.CRP WATCHES/WARNINGS/ADVISORIES...
TX...High Rip Current Risk through Sunday morning For the following
     zones: Aransas Islands...Calhoun Islands...Kleberg
     Islands...Nueces Islands.

     Flash Flood Watch through Sunday morning For the following
     zones: Aransas Islands...Bee...Calhoun Islands...Coastal
     Aransas...Coastal Calhoun...Coastal Kleberg...Coastal
     Nueces...Coastal Refugio...Coastal San Patricio...Duval...
     Goliad...Inland Calhoun...Inland Kleberg...Inland Nueces...
     Inland Refugio...Inland San Patricio...Jim Wells...Kleberg
     Islands...La Salle...Live Oak...McMullen...Nueces Islands...
     Victoria...Webb.

     Coastal Flood Advisory until 10 AM CDT Sunday For the following
     zones: Aransas Islands...Calhoun Islands...Coastal
     Aransas...Coastal Calhoun...Coastal Kleberg...Coastal
     Nueces...Coastal Refugio...Coastal San Patricio...Kleberg
     Islands...Nueces Islands.

GM...None.

&&

TE/81...AVIATION
Hazardous weather outlook, Sep 15, 3:18 PM CST, 8 hours 42 minutes before
Hazardous Weather Outlook...UPDATED
National Weather Service Corpus Christi TX
418 PM CDT Sat Sep 15 2018

TXZ229>234-239>247-342>347-442-443-447-162130-
La Salle-McMullen-Live Oak-Bee-Goliad-Victoria-Webb-Duval-
Jim Wells-Inland Kleberg-Inland Nueces-Inland San Patricio-
Coastal Aransas-Inland Refugio-Inland Calhoun-Coastal Kleberg-
Coastal Nueces-Coastal San Patricio-Aransas Islands-
Coastal Refugio-Coastal Calhoun-Kleberg Islands-Nueces Islands-
Calhoun Islands-
418 PM CDT Sat Sep 15 2018

This hazardous weather outlook is for South Texas.

.DAY ONE...Tonight

Locally heavy rainfall will be possible tonight with numerous
showers and isolated thunderstorms. A Flash Flood Watch is in
effect tonight through Sunday morning for all of South Texas.
Threat for locally heavy rainfall will shift west into the Brush
Country through Sunday afternoon as the tropical wave moves west.

A Coastal Flood Advisory is in effect for the Middle Texas coast
and bays through Sunday morning. Elevated tide levels will cause
minor tidal overflow around the time of high tide tonight into
early Sunday morning. Long period swells will keep a High Risk of
rip currents for gulf facing beaches through Sunday morning.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

Scattered thunderstorms are expected Sunday. Isolated thunderstorms
are expected Monday through Thursday. Scattered thunderstorms again
Friday. There will be a moderate risk of rip currents for gulf
facing beaches Sunday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

GMZ230-235-250-255-270-275-162130-
Bays and Waterways from Baffin Bay to Port Aransas-
Bays and Waterways from Port Aransas to Port O'Connor-
Coastal waters from Baffin Bay to Port Aransas out 20 NM-
Coastal waters from Port Aransas to Matagorda Ship Channel out
20 NM-Waters from Baffin Bay to Port Aransas from 20 to 60 NM-
Waters from Port Aransas to Matagorda Ship Channel from 20 to
60 NM-
418 PM CDT Sat Sep 15 2018

This hazardous weather outlook is for the Middle Texas
Coastal Waters.

.DAY ONE...Tonight

Locally heavy rainfall will be possible tonight with numerous
showers and isolated thunderstorms. Showers and thunderstorms
could produce wind gusts to 30 knots at times today.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

Scattered thunderstorms are expected Sunday. Isolated thunderstorms
are expected Monday through Thursday. Scattered thunderstorms again
Friday.

TE

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

2 flood. Local standard time, as filed.

Flood, Nueces

When
September 16, 12:00 AM CST to September 18, 12:00 PM CST
Where
Nueces County, Chapman Ranch to 3.38 mi SSW of Peary Place
Cause
Heavy Rain
Reported by
River/Stream Gage
Coordinates
27.580, -97.470

Heavy rains flooded Oso Creek on the 16th with the creek going above major flood stage. Major flooding reached the approaches to the Farm to Market 763 bridge. Numerous outbuildings and barns were surrounded and approached apartment buildings below Farm to Market 763.

Flood, McMullen

When
September 20, 12:00 PM CST to September 22, 12:00 PM CST
Where
McMullen County, 12.68 mi W of Tilden to 7.72 mi NE of Tilden
Cause
Heavy Rain
Reported by
River/Stream Gage
Coordinates
28.449, -98.759

The Nueces River near Tilden reached major flood stage on the 21st. This caused major lowland flooding of livestock, roads, irrigation pumps and tank batteries. Fencing was damaged along with a few hunting cabins.

What these are

Flood
Flooding that develops more slowly than a flash flood: rivers leaving their banks, or water standing over land for an extended time.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Texas in 2018Every state in 2018This day in weather historyWarnings in Texas, September 2018

Sources

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: 787617, 787616.