Alert archive / Texas / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 39, NWS San Angelo, TX

April 18, 2006Kimble County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at Apr 18, 2006, 5:48 PM CDT for Kimble County, Texas. It was in force for 57 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
Apr 18, 2006, 5:48 PM CDT (22:48 UTC)
Expired
Apr 18, 2006, 6:45 PM CDT
In force
57 min
Issued by
NWS San Angelo, TX
Area
Counties, with a storm outline in the text

County Kimble County, TX

The radar

The San Angelo radar (KSJT), 121 km from the middle of the area, began a volume at 22:51 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

Del Rio, TX (KDRT), launched 12:00Z, 10.8 hours before the alert went out and 163 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, Del Rio, TX at 12:00Z on 2006-04-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1764 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, Del Rio, TX at 12:00Z on 2006-04-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 126 square meters per square second.19395878Sfc1 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
1764 J/kg
Mixed-layer CIN
-393 J/kg
Mixed-layer LCL
1650 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
126 m²/s²
0-3 km storm-relative helicity
138 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

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 San Angelo, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 18, 3:29 PM CDT, 2 hours 19 minutes earlier.

Area forecast discussion, Apr 18, 3:29 PM CDT, 2 hours 19 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN ANGELO TX
329 PM CDT TUE APR 18 2006

.SHORT TERM...
DRY LINE LOCATED AT 20Z FROM SAN SABA TO JUST EAST OF JUNCTION.
VISIBLE SATELLITE IMAGERY SHOWS CUMULUS DEVELOPING ALONG THE DRY
LINE. DRY LINE HAS NOT MOVED MUCH LAST COUPLE OF HOURS. MAY THROW
IN A SLIGHT CHANCE OF THUNDERSTORMS ALONG AND EAST OF DRY LINE FOR
LATE THIS AFTERNOON/EARLY EVENING. COLD FRONT CURRENTLY MOVING
THROUGH TEXAS PANHANDLE/WESTERN OKLAHOMA EXPECTED TO MOVE THROUGH
BIG COUNTRY THIS EVENING...AND REST OF NORTH TEXAS OVERNIGHT.
NORTH WINDS WILL GUST 15 TO 20 MPH ALONG AND JUST BEHIND FRONT.
SOME FIRE WEATHER CONCERNS THIS EVENING WITH THESE GUSTY WINDS.
WITH LOW DEW POINTS WE HAVE UNDERCUT GFS GUIDANCE SEVERAL DEGREES
FOR MIN TEMPERATURES TONIGHT.

.LONG TERM...
COLD FRONT EXPECTED TO BECOME STATIONARY SOUTH OF FORECAST AREA
TOMORROW. A FEW STORMS COULD DEVELOP LATE WEDNESDAY AFTERNOON
ALONG FRONT...BUT BETTER CHANCE LATE WEDNESDAY NIGHT...THURSDAY
AND THURSDAY NIGHT AS UPPER LEVEL SYSTEM...CURRENTLY MOVING INTO
CALIFORNIA...APPROACHES. INITIAL STORM DEVELOPMENT WILL BE ACROSS
NORTHERN EDWARDS PLATEAU AND NORTHWEST HILL COUNTRY LATE
WEDNESDAY...BUT THEN SPREADING NORTHWARD ACROSS WEST CENTRAL TEXAS AS
FRONT LIFTS NORTHWARD AS A WARM FRONT. SEVERE STORMS ARE
POSSIBLE...PER SPC OUTLOOKS. UNSETTLED PATTERN WILL EXTEND INTO
NEXT WEEK.

&&

.PRELIMINARY POINT TEMPS/POPS...
ABILENE      55  74  54  78 /  10  10  30  40
SAN ANGELO   57  84  58  79 /  10  10  30  40
JUNCTION     60  82  60  79 /  10  20  40  40

&&

.SJT WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

09/09
Hazardous weather outlook, Apr 18, 3:45 PM CDT, 2 hours 3 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE SAN ANGELO TX
345 PM CDT TUE APR 18 2006

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-
140-154-155-168>170-192045-
FISHER-NOLAN-STERLING-COKE-RUNNELS-IRION-TOM GREEN-CONCHO-
CROCKETT-SCHLEICHER-SUTTON-HASKELL-THROCKMORTON-JONES-SHACKELFORD-
TAYLOR-CALLAHAN-COLEMAN-BROWN-MCCULLOCH-SAN SABA-MENARD-KIMBLE-
MASON-
345 PM CDT TUE APR 18 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WEST CENTRAL
TEXAS.

.DAY ONE...THIS AFTERNOON AND TONIGHT

THERE IS A SLIGHT RISK FOR SEVERE THUNDERSTORMS SOUTHEST OF A LINE
FROM RICHLAND SPRINGS TO SONORA. THE MAIN CONCERN WITH THESE
THUNDERSTORMS WILL BE LARGE HAIL AND DAMAGING WINDS.

ELEVATED FIRE DANGER WILL REMAIN OVER THE AREA THROUGH THE EVENING
HOURS DUE TO EXTREMELY HOT TEMPERATURES AND VERY LOW RELATIVE
HUMIDITY VALUES. IN ADDITION...A WIND SHIFT WILL OCCUR TONIGHT
TURNING WINDS TO THE NORTH AS A COLD FRONT MOVES THROUGH THE
REGION.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THERE IS A SLIGHT RISK FOR SEVERE WEATHER WEDNESDAY AND THURSDAY
AFTERNOON AND EVENING. A FRONTAL BOUNDARY WILL STALL OVER CENTRAL
AND WEST CENTRAL TEXAS. THIS WILL COMBINE WITH UPPER LEVEL
DISTURBANCES AND RESULT IN THE POSSIBILITY FOR THUNDERSTORMS TO
APPROACH SEVERE LEVELS. THE MAIN CONCERNS WITH THESE THUNDERSTORMS
WILL LARGE HAIL AND DAMAGING WINDS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME.
HOWEVER...SPOTTERS AND LOCAL AUTHORITIES ARE ENCOURAGED TO
MONITOR THE SITUATION TONIGHT THROUGH THURSDAY FOR UPDATED
FORECASTS.

In the hours before

Local storm report, Apr 18, 4:44 PM CDT, 1 hour 4 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>
Special weather statement, Apr 18, 4:52 PM CDT, 56 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>
Special weather statement, Apr 18, 5:12 PM CDT, 36 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>
Special weather statement, Apr 18, 5:21 PM CDT, 27 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, Apr 18, 5:32 PM CDT, 16 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>
Special weather statement, Apr 18, 5:45 PM CDT, 3 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 San Angelo, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 18, 4:06 PM CDTSevere Thunderstorm WarningSJTKimble, Mason54 min
Apr 18, 5:08 PM CDTSevere Thunderstorm WarningSJTSan Saba45 min
Apr 18, 6:43 PM CDTSevere Thunderstorm WarningSJTKimble22 min

Nearby

Severe Thunderstorm Warnings in Texas, 2006Every severe thunderstorm warning in 2006

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.