Alert archive / Texas / Flash Flood Warnings in 2024

Flash Flood Warning 21, NWS Corpus Christi, TX

September 4, 2024Aransas County, Calhoun County, Refugio County, Texas

NWS Corpus Christi, TX issued this flash flood warning at Sep 4, 2024, 10:07 AM CDT for Aransas County, Calhoun County, Refugio County, Texas. It was in force for 113 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Sep 4, 2024, 10:07 AM CDT (15:07 UTC)
Expired
Sep 4, 2024, 12:00 PM CDT
In force
113 min
Issued by
NWS Corpus Christi, TX
Area
Storm-based polygon
Flood severity
None

Counties Aransas County, TX, Calhoun County, TX, Refugio County, TX

The radar

The Corpus Christi radar (KCRP), 87 km from the middle of the area, began a volume at 15:10 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 12:00Z, 3.1 hours before the alert went out and 80 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-pSkew-T log-p diagram, Corpus Christi, TX at 12:00Z on 2024-09-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 209 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Corpus Christi, TX at 12:00Z on 2024-09-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 2 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
209 J/kg
Mixed-layer CIN
-23 J/kg
Mixed-layer LCL
622 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
2 m²/s²
0-3 km storm-relative helicity
11 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

356 
WGUS54 KCRP 041507
FFWCRP
TXC007-057-391-041700-
/O.NEW.KCRP.FF.W.0021.240904T1507Z-240904T1700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Corpus Christi TX
1007 AM CDT Wed Sep 4 2024

The National Weather Service in Corpus Christi has issued a

* Flash Flood Warning for...
  Northeastern Aransas County in south central Texas...
  Eastern Refugio County in south central Texas...
  West Central Calhoun County in south Texas...

* Until noon CDT.

* At 1007 AM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 3 inches of rain 
  have fallen in the past hour. Additional rainfall amounts of 1 to 
  3 inches are possible in the warned area. Flash flooding is 
  ongoing or expected to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  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...
  Aransas National Wildlife Refuge.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

&&

LAT...LON 2834 9678 2825 9675 2816 9687 2829 9695
      2837 9686

FLASH FLOOD...RADAR INDICATED

$$

PH

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 4, 3:33 AM CDTAreal Flood AdvisoryCRPAransas, Kleberg, Nueces, San Patricio3 hr
Sep 4, 4:46 AM CDTFlash Flood WarningCRPNueces3 hr
Sep 4, 4:57 AM CDTSpecial Marine WarningCRP33 min
Sep 4, 6:40 AM CDTFlash Flood WarningCRPAransas, Nueces, San Patricio4 hr
Sep 4, 7:39 AM CDTSpecial Marine WarningCRP37 min
Sep 4, 7:42 AM CDTSpecial Marine WarningCRP31 min

Nearby

Flash Flood Warnings in Texas, 2024Every flash flood warning in 2024

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.