Alert archive / Texas / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 352, NWS Fort Worth, TX

October 14, 2007Denton County, Tarrant County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Oct 14, 2007, 9:56 PM CDT for Denton County, Tarrant County, Texas. It was in force for 34 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: Oct 14, 2007, 9:56 PM CDT (02:56 UTC)
Expired: Oct 14, 2007, 10:30 PM CDT
In force: 34 min
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon

Counties Denton County, TX, Tarrant County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 47 km from the middle of the area, began a volume at 02:58 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

Norman, OK (KOUN), launched 00:00Z, 2.9 hours before the alert went out and 249 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: 823 J/kg
Mixed-layer CIN: -23 J/kg
Mixed-layer LCL: 1097 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 203 m²/s²
0-3 km storm-relative helicity: 173 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 4.1

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 Fort Worth, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Oct 14, 9:48 PM CDT, 8 minutes earlier.

Area forecast discussion, Oct 14, 9:48 PM CDT, 8 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, Oct 14, 9:35 PM CDT, 21 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, Oct 14, 8:08 PM CDT, 1 hour 48 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
808 PM CDT SUN OCT 14 2007

TXZ144-150145-
BOSQUE TX-
808 PM CDT SUN OCT 14 2007

...SIGNIFICANT WEATHER ADVISORY FOR...
  SOUTHEASTERN BOSQUE COUNTY

AT 808 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 11 MILES SOUTH OF CLIFTON...MOVING NORTH AT 30
MPH.

CITIES IN THE PATH OF THIS STORM INCLUDE CLIFTON AND MOSHEIM.

FREQUENT CLOUD TO GROUND LIGHTNING...VERY HEAVY RAINFALL...PEA-SIZED
HAIL...AND WIND GUSTS TO 50 MPH CAN BE EXPECTED FROM THIS STORM.

IF THIS STORM INTENSIFIES...A SEVERE WEATHER WARNING MAY BE NEEDED.

LAT...LON 3164 9763 3166 9766 3167 9766 3172 9770
      3192 9765 3183 9737 3160 9757 3160 9762
TIME...MOT...LOC 0108Z 201DEG 28KT 3166 9763

13

Local storm report, Oct 14, 9:07 PM CDT, 49 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>

Local storm report, Oct 14, 9:30 PM CDT, 26 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>

Local storm report, Oct 14, 9:31 PM CDT, 25 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>

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 14, 8:08 PM CDT	Special Weather Statement	FWD	Bosque	37 min
Oct 14, 8:24 PM CDT	Severe Thunderstorm Warning	FWD	Bosque	30 min
Oct 14, 8:45 PM CDT	Severe Thunderstorm Warning	FWD	Hill, Johnson	50 min
Oct 14, 9:23 PM CDT	Severe Thunderstorm Warning	FWD	Collin, Dallas, Denton	40 min
Oct 14, 9:27 PM CDT	Severe Thunderstorm Warning	FWD	Johnson, Tarrant	48 min
Oct 14, 9:48 PM CDT	Severe Thunderstorm Warning	FWD	Comanche, Hamilton, Mills	42 min
Oct 14, 10:51 PM CDT	Severe Thunderstorm Warning	FWD	Bell	39 min
Oct 14, 11:55 PM CDT	Special Weather Statement	FWD	McLennan	35 min
Oct 15, 12:22 AM CDT	Special Weather Statement	FWD	Limestone	23 min
Oct 15, 12:50 AM CDT	Special Weather Statement	FWD	Limestone	25 min
Oct 15, 1:09 AM CDT	Special Weather Statement	FWD	Collin	36 min
Oct 15, 1:40 AM CDT	Special Weather Statement	FWD	Kaufman	35 min
Oct 15, 1:56 AM CDT	Special Weather Statement	FWD	McLennan	34 min
Oct 15, 5:09 AM CDT	Special Weather Statement	FWD	Eastland	36 min
Oct 15, 6:34 AM CDT	Special Weather Statement	FWD	Parker	26 min
Oct 15, 6:53 AM CDT	Special Weather Statement	FWD	Denton, Tarrant	67 min
Oct 15, 7:15 AM CDT	Special Weather Statement	FWD	Tarrant	60 min
Oct 15, 7:26 AM CDT	Severe Thunderstorm Warning	FWD	Dallas, Tarrant	49 min
Oct 15, 8:09 AM CDT	River Flood Warning	FWD	Dallas	8 hr
Oct 15, 8:18 AM CDT	River Flood Warning	FWD	Dallas	37 hr
Oct 15, 8:33 AM CDT	Severe Thunderstorm Warning	FWD	Hill	42 min
Oct 15, 8:39 AM CDT	Flash Flood Warning	FWD	Collin	3 hr
Oct 15, 8:46 AM CDT	Special Weather Statement	FWD	Delta, Lamar	29 min
Oct 15, 8:50 AM CDT	Special Weather Statement	FWD	Kaufman, Rains, Van Zandt	55 min
Oct 15, 8:51 AM CDT	River Flood Warning	FWD	Hunt	23 hr
Oct 15, 8:51 AM CDT	River Flood Warning	FWD	Hunt, Rockwall	12 hr
Oct 15, 8:55 AM CDT	Special Weather Statement	FWD	Navarro	65 min
Oct 15, 8:57 AM CDT	Special Weather Statement	FWD	Limestone, McLennan	63 min
Oct 15, 9:24 AM CDT	Special Weather Statement	FWD	Falls	66 min
Oct 15, 9:43 AM CDT	Severe Thunderstorm Warning	FWD	Anderson, Freestone, Henderson	62 min
Oct 15, 10:02 AM CDT	Special Weather Statement	FWD	Van Zandt	28 min
Oct 15, 10:30 AM CDT	Special Weather Statement	FWD	Bell	30 min
Oct 15, 10:40 AM CDT	River Flood Warning	FWD	Dallas	10 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2007 Every severe thunderstorm warning in 2007

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.