Alert archive / Texas / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 86, NWS San Angelo, TX

May 24, 2001Mason County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at May 24, 2001, 8:27 PM CDT for Mason County, Texas. It was in force for 33 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 24, 2001, 8:27 PM CDT (01:27 UTC)
Expired: May 24, 2001, 9:00 PM CDT
In force: 33 min
Issued by: NWS San Angelo, TX
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Mason County, TX

The radar

The San Angelo radar (KSJT), 141 km from the middle of the area, began a volume at 01:29 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 00:00Z, 1.5 hours before the alert went out and 216 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: 813 J/kg
Mixed-layer CIN: -30 J/kg
Mixed-layer LCL: 3306 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 10 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 May 24, 6:05 PM CDT, 2 hours 22 minutes earlier.

Area forecast discussion, May 24, 6:05 PM CDT, 2 hours 22 minutes before

WEST CENTRAL TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN ANGELO TX
605 PM CDT THU MAY 24 2001

UPDATED ZONES TO REFLECT CURRENT SEVERE THUNDERSTORM WATCH FOR
SOUTHERN ZONES UNTIL 11 PM TONIGHT.

.SJT...SEVERE THUNDERSTORM WATCH TXZ076>078-169 UNTIL 11 PM.

HUBER

*********  312 PM CDT THU MAY 24 2001 DISCUSSION FOLLOWS *********

THE UPPER LEVEL LOW DOMINATING THE EASTERN TWO THIRDS OF THE
COUNTRY...  WILL MEANDER AROUND THE WESTERN GREAT LAKES REGION
THROUGH SATURDAY.  SEVERAL SHORTWAVES WILL ROTATE AROUND THE LOW IN
THE NORTHWEST FLOW PASSING ACROSS THE REGION. A COLD FRONT IS
CURRENTLY MAKING ITS WAY SOUTH ACROSS THE FORECAST AREA BUT IS
STARTING TO SLOW DOWN...ESPECIALLY ON THE WEST SIDE.

THIS EVENING...THE COLD FRONT WILL CONTINUE TO SLOWLY DRAG
SOUTH...WITH THE BEST MOVEMENT ACROSS THE EASTERN HALF OF THE
FORECAST AREA. 850-500MB RELATIVE HUMIDITY INCREASES TO 60 TO 70
PERCENT ACROSS THE SOUTHERN PORTIONS OF THE HEARTLAND AND THE
NORTHWEST HILL COUNTRY. THIS COMBINED WITH THE BEST INSTABILITY
TOWARDS THE SOUTHEAST THIS EVENING...WILL CONTINUE WITH THE CHANCE
OF AN ISOLATED THUNDERSTORM.

OVERNIGHT INTO FRIDAY THE NEXT SHORTWAVE MOVES ACROSS THE FORECAST
AREA.  THE BEST MOISTURE WILL BE ACROSS THE CONCHO VALLEY AND THE
HEARTLAND. THEREFORE WILL GO WITH THE BEST CHANCES FOR THESE AREAS
WITH LOWER CHANCE TO THE NORTH. BY AFTERNOON THE BOUNDARY LAYER
RELATIVE HUMIDITY INCREASES TO 60 TO 70 PERCENT SPREADING THROUGH
THE SOUTHERN COUNTIES. THE BEST INSTABILITY IS TO THE SOUTHWEST.
WITH LIS AT -4 TO -6 AND MID LEVEL LAPSE RATES INCREASING...AND A
SURFACE BOUNDARY CONTINUING TO LINGER IN THE AREA WILL CONTINUE
CHANCES FOR SHOWERS AND THUNDERSTORMS THROUGHOUT THE DAY. ALSO WILL
NOT RULE OUT THE CHANCE OF A THUNDERSTORM APPROACHING SEVERE LIMITS
TO THE SOUTH.

FRIDAY NIGHT...SUFFICIENT MOISTURE AND DIURNAL HEATING WILL LINGER
INTO THE EVENING FOR THE SOUTHEAST COUNTIES. HOWEVER...AS THE
SHORTWAVE MOVES OFF TO THE SOUTHEAST...DRIER AIR MOVES IN FROM THE
NORTHWEST.

SATURDAY AND SATURDAY NIGHT...ANOTHER WEAK SHORTWAVE SLIDES SOUTH
ACROSS THE WESTERN COUNTIES. ALSO A DRY LINE DOES BEGIN TO DEVELOP
TO THE WEST OF THE FORECAST AREA...HOWEVER MOISTURE IS SEVERELY
LACKING THROUGHOUT THE COLUMN. THEREFORE WILL ONLY GO WITH PARTLY
CLOUDY.

IN THE EXTENDED...THE CUTOFF UPPER LOW CONTINUES TO MEANDER IN THE
OHIO VALLEY ON SUNDAY. ON MONDAY THE LOW FINALLY BEGINS TO GET
CAUGHT UP IN THE FLOW AND IS LIFTED OFF TO THE NORTHEAST...THE
BEGINNING OF NEXT WEEK. THIS WILL ALLOW A WEAK UPPER LEVEL RIDGE TO
BUILD INTO THE SOUTHERN PLAINS MONDAY AND TUESDAY...BEFORE AN UPPER
LEVEL TROUGH APPROACHES FROM THE WEST WEDNESDAY AND THURSDAY. HOW
QUICKLY THE LOW LIFTS TO THE NORTHEAST WILL HELP DETERMINE WHETHER
TO PUT THE CHANCE OF RAIN IN FOR LATE SUNDAY. THIS IS DUE TO A
SHORTWAVE BEING CURRENTLY PROGGED TO MOVE ACROSS THE PANHANDLE AND
OKLAHOMA...WITH THE SOUTHERN FRINGES CLIPPING THE BIG COUNTRY. FOR
NOW WILL HOLD OFF FROM INTRODUCING ANY MENTION OF PRECIPITATION. BY
MIDWEEK AS THE UPPER LOW APPROACHES A LOW LEVEL JET DEVELOPS AHEAD
OF THE ASSOCIATED SURFACE TROUGH. THIS WILL ALLOW MOISTURE TO RETURN
TO THE REGION...FROM THE SOUTH. THUS WILL LEAVE IN THE CHANCE OF
PRECIPITATION ON WEDNESDAY INTO THURSDAY.

ABI 053/078/060/082 12-0
SJT 055/080/059/085 23-0
JCT 059/081/059/086 12-0

.SJT...NONE.

24

In the hours before

Local storm report, May 24, 7:38 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>

Nearby

Severe Thunderstorm Warnings in Texas, 2001 Every severe thunderstorm warning in 2001

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.