Alert archive / Texas / Flash Flood Warnings in 2010

Flash Flood Warning 46, NWS Corpus Christi, TX

May 18, 2010Duval County, Webb County, Texas

NWS Corpus Christi, TX issued this flash flood warning at May 18, 2010, 4:48 AM CDT for Duval County, Webb County, Texas. It was in force for 117 min. 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 18, 2010, 4:48 AM CDT (09:48 UTC)
Expired
May 18, 2010, 6:45 AM CDT
In force
117 min
Issued by
NWS Corpus Christi, TX
Area
Storm-based polygon
Flood severity
None

Counties Duval County, TX, Webb County, TX

The radar

The Corpus Christi radar (KCRP), 139 km from the middle of the area, began a volume at 09:50 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, 9.8 hours before the alert went out and 156 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 00:00Z on 2010-05-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1401 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Corpus Christi, TX at 00:00Z on 2010-05-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 37 square meters per square second.193958Sfc1 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
1401 J/kg
Mixed-layer CIN
-89 J/kg
Mixed-layer LCL
1374 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
37 m²/s²
0-3 km storm-relative helicity
54 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.4

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 18, 2:18 AM CDT, 2 hours 30 minutes earlier.

Area forecast discussion, May 18, 2:18 AM CDT, 2 hours 30 minutes before
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Hazardous weather outlook, May 18, 2:39 AM CDT, 2 hours 9 minutes before
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<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
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      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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In the hours before

Special weather statement, May 18, 12:30 AM CDT, 4 hours 18 minutes before
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
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</body>
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The office that day

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

IssuedProductOfficeCountiesLasted
May 17, 7:03 PM CDTAreal Flood AdvisoryCRPGoliad57 min
May 17, 11:58 PM CDTTornado WarningCRPVictoria35 min
May 18, 1:21 AM CDTSpecial Marine WarningCRP83 min
May 18, 1:51 AM CDTSevere Thunderstorm WarningCRPLa Salle54 min
May 18, 2:35 AM CDTAreal Flood AdvisoryCRPLa Salle, Webb115 min
May 18, 2:53 AM CDTSevere Thunderstorm WarningCRPLa Salle, Webb67 min
May 18, 3:42 AM CDTSevere Thunderstorm WarningCRPDuval, La Salle, McMullen, Webb63 min
May 18, 4:36 AM CDTSevere Thunderstorm WarningCRPDuval, Webb54 min
May 18, 5:04 AM CDTFlash Flood WarningCRPWebb116 min
May 18, 5:14 AM CDTAreal Flood AdvisoryCRPMcMullen2 hr
May 18, 5:23 AM CDTSevere Thunderstorm WarningCRPDuval, Webb52 min
May 18, 6:42 AM CDTSevere Thunderstorm WarningCRPDuval, Jim Wells, Kleberg63 min
May 18, 6:51 AM CDTFlash Flood WarningCRPDuval97 min
May 18, 7:42 AM CDTSevere Thunderstorm WarningCRPJim Wells, Kleberg, Nueces63 min
May 18, 7:51 AM CDTFlash Flood WarningCRPJim Wells, Kleberg88 min
May 18, 8:16 AM CDTSpecial Marine WarningCRP89 min
May 18, 9:47 AM CDTSpecial Marine WarningCRP73 min

Nearby

Flash Flood Warnings in Texas, 2010Every flash flood warning in 2010

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.