Alert archive / Texas / Areal Flood Advisories in 2021

Areal Flood Advisory 76, NWS Brownsville, TX

July 7, 2021Hidalgo County, Starr County, Texas

NWS Brownsville, TX issued this areal flood advisory at Jul 7, 2021, 6:46 PM CDT for Hidalgo County, Starr County, Texas. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued: Jul 7, 2021, 6:46 PM CDT (23:46 UTC)
Expired: Jul 7, 2021, 9:11 PM CDT
In force: 2 hr
Issued by: NWS Brownsville, TX
Area: Storm-based polygon

Counties Hidalgo County, TX, Starr County, TX

The radar

The Brownsville radar (KBRO), 121 km from the middle of the area, began a volume at 23:46 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 12:00Z, 11.8 hours before the alert went out and 178 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: 69 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 665 m above ground
0-6 km bulk shear: 3 kt
0-1 km storm-relative helicity: -31 m²/s²
0-3 km storm-relative helicity: -31 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Brownsville, TX wrote its last area forecast discussion before this areal flood advisory went out at Jul 7, 4:39 PM CDT, 2 hours 7 minutes earlier.

Area forecast discussion, Jul 7, 4:39 PM CDT, 2 hours 7 minutes before

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Hazardous weather outlook, Jul 7, 4:47 PM CDT, 1 hour 59 minutes before

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  <meta name="viewport" content="width=device-width, initial-scale=1">
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  <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.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 6, 7:25 PM CDT	Areal Flood Advisory	BRO	Starr, Zapata	74 min
Jul 6, 8:29 PM CDT	Areal Flood Advisory	BRO	Hidalgo	102 min
Jul 6, 8:35 PM CDT	Areal Flood Advisory	BRO	Cameron, Hidalgo, Willacy	4 hr
Jul 6, 9:00 PM CDT	Flash Flood Warning	BRO	Willacy	3 hr
Jul 6, 9:27 PM CDT	Flash Flood Warning	BRO	Hidalgo	108 min
Jul 6, 10:00 PM CDT	Areal Flood Advisory	BRO	Hidalgo, Kenedy, Starr, Willacy	3 hr
Jul 6, 10:35 PM CDT	Areal Flood Advisory	BRO	Cameron	115 min
Jul 6, 10:50 PM CDT	Flash Flood Warning	BRO	Hidalgo, Starr	115 min
Jul 6, 11:01 PM CDT	Flash Flood Warning	BRO	Cameron	82 min
Jul 7, 12:27 AM CDT	Areal Flood Advisory	BRO	Cameron, Hidalgo, Willacy	4 hr
Jul 7, 12:33 AM CDT	Areal Flood Advisory	BRO	Cameron	3 hr
Jul 7, 12:43 AM CDT	Areal Flood Advisory	BRO	Hidalgo	3 hr
Jul 7, 1:50 AM CDT	Special Marine Warning	BRO		25 min
Jul 7, 2:28 AM CDT	Special Marine Warning	BRO		62 min
Jul 7, 3:13 AM CDT	Areal Flood Advisory	BRO	Hidalgo	3 hr
Jul 7, 3:22 AM CDT	Special Marine Warning	BRO		53 min
Jul 7, 3:57 AM CDT	Areal Flood Advisory	BRO	Cameron, Hidalgo, Willacy	11 hr
Jul 7, 3:59 AM CDT	Areal Flood Advisory	BRO	Hidalgo, Starr	5 hr
Jul 7, 5:53 AM CDT	Areal Flood Advisory	BRO	Hidalgo	9 hr
Jul 7, 8:59 AM CDT	Areal Flood Advisory	BRO	Hidalgo	3 hr
Jul 7, 11:43 AM CDT	Special Weather Statement	BRO	Cameron	47 min
Jul 7, 12:10 PM CDT	Areal Flood Advisory	BRO	Cameron	3 hr
Jul 7, 2:19 PM CDT	Special Marine Warning	BRO		41 min
Jul 7, 2:56 PM CDT	Special Marine Warning	BRO		34 min
Jul 7, 3:03 PM CDT	Special Marine Warning	BRO		42 min
Jul 7, 3:59 PM CDT	Special Marine Warning	BRO		31 min
Jul 7, 4:48 PM CDT	Special Marine Warning	BRO		27 min

Nearby

Areal Flood Advisories in Texas, 2021 Every areal flood advisory in 2021

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.