Alert archive / Texas / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 19, NWS Brownsville, TX

May 18, 2010Jim Hogg County, Starr County, Zapata County, Texas

NWS Brownsville, TX issued this severe thunderstorm warning at May 18, 2010, 6:16 AM CDT for Jim Hogg County, Starr County, Zapata County, Texas. It was in force for 59 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, 6:16 AM CDT (11:16 UTC)
Expired: May 18, 2010, 7:15 AM CDT
In force: 59 min
Issued by: NWS Brownsville, TX
Area: Storm-based polygon

Counties Jim Hogg County, TX, Starr County, TX, Zapata County, TX

The radar

The Corpus Christi radar (KCRP), 168 km from the middle of the area, began a volume at 11:16 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 18, 6:11 AM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 11.3 hours before the alert went out and 179 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: 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 severe thunderstorm warning 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 severe thunderstorm warning went out at May 18, 4:35 AM CDT, 1 hour 41 minutes earlier.

Area forecast discussion, May 18, 4:35 AM CDT, 1 hour 41 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>
  </main>
  <script src="index.js"></script>
</body>
</html>

Hazardous weather outlook, May 18, 4:02 AM CDT, 2 hours 14 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>
  </main>
  <script src="index.js"></script>
</body>
</html>

In the hours before

Special weather statement, May 18, 4:13 AM CDT, 2 hours 3 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
413 AM CDT TUE MAY 18 2010

TXZ248>251-181115-
ZAPATA-JIM HOGG-BROOKS-KENEDY-
INCLUDING THE CITIES OF...ZAPATA...HEBBRONVILLE...FALFURRIAS...
SARITA
413 AM CDT TUE MAY 18 2010

...SEVERE THUNDERSTORMS LOCATED JUST NORTH OF THE REGION...

NATIONAL WEATHER SERVICE DOPPLER RADAR IN BROWNSVILLE IS TRACKING
A LARGE AREA OF SEVERE THUNDERSTORMS...LOCATED OVER WEBB AND DUVAL
COUNTY. THE MOST INTENSE PORTION OF THE SEVERE THUNDERSTORMS IS
LOCATED ABOUT 34 MILES NORTHWEST OF HEBBRONVILLE...WITH THE WHOLE
THUNDERSTORM COMPLEX MOVING GENERALLY TO THE EAST AND SOUTHEAST AT
AROUND 20 MPH.

LARGE HAIL AND DAMAGING WINDS MAY AFFECT PORTIONS OF ZAPATA...JIM
HOGG...BROOKS...AND KENEDY COUNTY WITHIN THE NEXT COUPLE OF HOURS.
RESIDENTS IN THESE COUNTIES SHOULD MONITOR LOCAL MEDIA SOURCES FOR
THE LATEST INFORMATION REGARDING THIS DEVELOPING WEATHER SITUATION.

TOMASELLI

The office that day

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

Issued	Product	Office	Counties	Lasted
May 18, 4:41 AM CDT	Severe Thunderstorm Warning	BRO	Jim Hogg	94 min
May 18, 5:20 AM CDT	Severe Thunderstorm Warning	BRO	Zapata	55 min
May 18, 7:17 AM CDT	Special Marine Warning	BRO		43 min
May 18, 8:01 AM CDT	Special Marine Warning	BRO		44 min
May 18, 8:04 AM CDT	Areal Flood Advisory	BRO	Brooks	56 min
May 18, 8:29 AM CDT	Tornado Warning	BRO	Hidalgo	20 min
May 18, 8:37 AM CDT	Tornado Warning	BRO	Cameron	17 min
May 18, 8:57 AM CDT	Tornado Warning	BRO	Willacy	33 min
May 18, 9:07 AM CDT	Flash Flood Warning	BRO	Hidalgo	53 min
May 18, 9:20 AM CDT	Severe Thunderstorm Warning	BRO	Cameron, Willacy	55 min
May 18, 9:32 AM CDT	Special Marine Warning	BRO		88 min
May 18, 9:52 AM CDT	Areal Flood Advisory	BRO	Cameron	53 min
May 18, 9:59 AM CDT	Areal Flood Advisory	BRO	Willacy	61 min
May 18, 10:13 AM CDT	Severe Thunderstorm Warning	BRO	Cameron	32 min
May 18, 11:08 AM CDT	Special Marine Warning	BRO		52 min

Nearby

Severe Thunderstorm Warnings in Texas, 2010 Every severe thunderstorm 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.