Alert archive / Texas / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 71, NWS Shreveport, LA

April 23, 2010Cherokee County, Rusk County, Texas

NWS Shreveport, LA issued this severe thunderstorm warning at Apr 23, 2010, 8:32 PM CDT for Cherokee County, Rusk County, Texas. It was in force for 58 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 23, 2010, 8:32 PM CDT (01:32 UTC)
Expired: Apr 23, 2010, 9:30 PM CDT
In force: 58 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon

Counties Cherokee County, TX, Rusk County, TX

The radar

The Shreveport radar (KSHV), 118 km from the middle of the area, began a volume at 01:35 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
Apr 23, 5:41 PM CDT	Tornado Watch	SPC	9 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 1.5 hours before the alert went out and 127 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: 2092 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 810 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 155 m²/s²
0-3 km storm-relative helicity: 153 m²/s²
Significant tornado parameter: 1.6
Supercell composite: 8.6

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 Shreveport, LA wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 23, 8:22 PM CDT, 10 minutes earlier.

Area forecast discussion, Apr 23, 8:22 PM CDT, 10 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, Apr 23, 12:05 PM CDT, 8 hours 27 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SHREVEPORT LA
1205 PM CDT FRI APR 23 2010

ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-
TXZ096-097-108>112-124>126-136>138-149>153-165>167-241200-
SEVIER-HOWARD-LITTLE RIVER-HEMPSTEAD-NEVADA-MILLER-LAFAYETTE-
COLUMBIA-UNION AR-CADDO-BOSSIER-WEBSTER-CLAIBORNE-LINCOLN-
UNION LA-DE SOTO-RED RIVER-BIENVILLE-JACKSON-OUACHITA-SABINE LA-
NATCHITOCHES-WINN-GRANT-CALDWELL-LA SALLE-MCCURTAIN-BOWIE-
FRANKLIN-TITUS-CAMP-MORRIS-CASS-WOOD-UPSHUR-MARION-SMITH-GREGG-
HARRISON-CHEROKEE-RUSK-PANOLA-NACOGDOCHES-SHELBY-ANGELINA-
SAN AUGUSTINE-SABINE TX-
1205 PM CDT FRI APR 23 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL
ARKANSAS...SOUTHWEST ARKANSAS...NORTH CENTRAL LOUISIANA...
NORTHWEST LOUISIANA...SOUTHEAST OKLAHOMA...EAST TEXAS AND
NORTHEAST TEXAS.

.DAY ONE...THIS AFTERNOON AND TONIGHT...

A VIGOROUS STORM SYSTEM IS FORECAST TO MOVE ACROSS THE REGION
THIS AFTERNOON AND TONIGHT. THE FIRST WAVE OF STORMS WILL AFFECT
THE FOUR STATE AREA THIS AFTERNOON...WITH THE SECONDARY MAIN
STORM SYSTEM TO MOVE INTO NORTHEAST AND EAST TEXAS LATE TONIGHT. A
COMBINATION OF UNSTABLE AIR...STRONG WIND SHEAR...AND ABUNDANT LOW
LEVEL MOISTURE WILL ALLOW FOR AN ENVIRONMENT CONDUCIVE TO STRONG
TO SEVERE THUNDERSTORMS...WITH THE MAIN THREAT BEING DAMAGING
WINDS...HAIL...AND ISOLATED TORNADOES.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY...

A SECONDARY UPPER-LEVEL DISTURBANCE WILL ALLOW FOR A CONTINUED
THREAT OF SEVERE WEATHER SATURDAY MORNING UNTIL ABOUT NOON ACROSS
THE MAJORITY OF THE FOUR STATE REGION. RAINFALL AMOUNTS
APPROACHING THREE INCHES CAN BE EXPECTED ALONG A LINE FROM
JACKSONVILLE TEXAS...THROUGH SHREVEPORT...AND INTO EL DORADO
ARKANSAS. ALONG WITH HEAVY RAINFALL...DAMAGING WINDS AND ISOLATED
TORNADOES WILL BE POSSIBLE SATURDAY MORNING.

.SPOTTER INFORMATION STATEMENT...

STORM SPOTTERS...HAM RADIO OPERATORS...AND EMERGENCY MANAGEMENT
OFFICIALS MAY BE ACTIVATED ANYTIME FROM THIS AFTERNOON THROUGH
SATURDAY MORNING.

03

In the hours before

Special weather statement, Apr 23, 6:16 PM CDT, 2 hours 16 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
616 PM CDT FRI APR 23 2010

ARZ050-051-059-060-TXZ097-240000-
BOWIE-HEMPSTEAD-HOWARD-LITTLE RIVER-SEVIER-
616 PM CDT FRI APR 23 2010

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A SIGNIFICANT
WEATHER ADVISORY...EFFECTIVE UNTIL 700 PM CDT...FOR THE FOLLOWING
COUNTIES...

IN SOUTHWEST ARKANSAS...
     LITTLE RIVER...HEMPSTEAD...SEVIER AND HOWARD...
IN NORTHEAST TEXAS...
     BOWIE...

INCLUDING THE FOLLOWING LOCATIONS...
     ASHDOWN...OGDEN...RICHMOND...SARATOGA...TOLLETTE AND WILTON...

AT 613 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS ARE TRACKING
A STRONG THUNDERSTORM NEAR RICHMOND...OR 9 MILES SOUTHWEST OF
ASHDOWN...MOVING NORTHEAST AT 35 MPH.

ASHDOWN IS IN THE PATH OF THIS STRONG THUNDERSTORM.

MOTHBALL SIZE HAIL...AND WINDS AROUND 40 MPH ARE EXPECTED WITH THIS
STORM.

13

Local storm report, Apr 23, 6:45 PM CDT, 1 hour 47 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
645 PM CDT FRI APR 23 2010

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0625 PM     HAIL             ASHDOWN                 33.67N 94.13W
04/23/2010  E0.50 INCH       LITTLE RIVER       AR   LAW ENFORCEMENT

&&

18

Local storm report, Apr 23, 7:22 PM CDT, 1 hour 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
722 PM CDT FRI APR 23 2010

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0655 PM     HAIL             7 ENE ASHDOWN           33.71N 94.01W
04/23/2010  E1.00 INCH       LITTLE RIVER       AR   PUBLIC

            QUARTER SIZE HAIL WAS OBSERVED IN THE COMMUNITY OF
            YARBOROUGH LANDING.

0700 PM     HAIL             8 E ASHDOWN             33.67N 93.99W
04/23/2010  E1.00 INCH       LITTLE RIVER       AR   PARK/FOREST SRVC

            QUARTER SIZE HAIL WAS OBSERVED AT BEARDS BLUFF PARK JUST
            EAST OF MILLWOOD DAM.

&&

18

Special weather statement, Apr 23, 8:07 PM CDT, 25 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
807 PM CDT FRI APR 23 2010

TXZ149-240200-
CHEROKEE-
807 PM CDT FRI APR 23 2010

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A SIGNIFICANT
WEATHER ADVISORY...EFFECTIVE UNTIL 900 PM CDT...FOR THE FOLLOWING
COUNTY...

IN NORTHEAST TEXAS...
     CHEROKEE...

INCLUDING THE FOLLOWING LOCATIONS...
     JACKSONVILLE...MAYDELLE...PONTA AND RUSK...

AT 807 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS ARE TRACKING
A STRONG THUNDERSTORM 10 MILES WEST OF MAYDELLE...OR 12 MILES
NORTHEAST OF PALESTINE...MOVING EAST AT 30 MPH.

HALF INCH TO DIME SIZE HAIL...AND WINDS 30 TO 40 MPH ARE EXPECTED
WITH THIS STORM. SHOULD THIS STORM INTENSIFY...A SEVERE THUNDERSTORM
WARNING WILL BE NEEDED.

15

Local storm report, Apr 23, 8:12 PM CDT, 20 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
812 PM CDT FRI APR 23 2010

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0745 PM     TSTM WND DMG     2 NNE ATLANTA           33.14N 94.15W
04/23/2010                   CASS               TX   TRAINED SPOTTER

            SEVERAL TREES WERE REPORTED DOWN IN QUEEN CITY TEXAS.

0745 PM     HAIL             2 NNE ATLANTA           33.14N 94.15W
04/23/2010  E0.88 INCH       CASS               TX   TRAINED SPOTTER

            NICKLE SIZE HAIL REPORTED IN QUEEN CITY TEXAS.

&&

18

Local storm report, Apr 23, 8:28 PM CDT, 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>

The office that day

Everything else NWS Shreveport, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 23, 7:30 PM CDT	Tornado Warning	SHV	Cass	45 min
Apr 23, 8:42 PM CDT	Tornado Warning	SHV	Cherokee, Rusk	48 min
Apr 23, 8:47 PM CDT	Severe Thunderstorm Warning	SHV	Angelina, Cherokee, Nacogdoches	40 min
Apr 24, 1:57 AM CDT	Severe Thunderstorm Warning	SHV	Smith, Wood	63 min
Apr 24, 2:27 AM CDT	Tornado Warning	SHV	Wood	19 min
Apr 24, 2:41 AM CDT	Severe Thunderstorm Warning	SHV	Camp, Franklin, Gregg, Morris, Titus, Upshur	49 min
Apr 24, 3:06 AM CDT	Lake Wind Advisory	SHV	Angelina, Bowie, Camp, Cass, Cherokee, Franklin and 15 more	18 hr
Apr 24, 3:14 AM CDT	Severe Thunderstorm Warning	SHV	Bowie, Cass, Harrison, Marion, Red River	46 min
Apr 24, 7:43 AM CDT	Severe Thunderstorm Warning	SHV	Sabine	47 min
Apr 24, 5:25 AM CDT	Severe Thunderstorm Warning	SHV	Union	50 min
Apr 24, 5:40 AM CDT	Severe Thunderstorm Warning	SHV	Bossier, Caddo, Webster	35 min
Apr 24, 5:51 AM CDT	Tornado Warning	SHV	Bossier, Claiborne, Webster	39 min
Apr 24, 5:54 AM CDT	Severe Thunderstorm Warning	SHV	Bienville, Claiborne, Lincoln, Union	51 min
Apr 24, 6:23 AM CDT	Tornado Warning	SHV	Lincoln, Union	52 min
Apr 24, 7:07 AM CDT	Severe Thunderstorm Warning	SHV	Union	38 min
Apr 24, 7:12 AM CDT	Tornado Warning	SHV	Union	33 min
Apr 24, 7:23 AM CDT	Severe Thunderstorm Warning	SHV	De Soto, Natchitoches, Red River, Sabine	52 min
Apr 24, 8:01 AM CDT	Severe Thunderstorm Warning	SHV	Bienville, Jackson, Lincoln, Natchitoches, Red River, Winn	44 min
Apr 24, 8:38 AM CDT	Severe Thunderstorm Warning	SHV	Grant, Jackson, Natchitoches, Winn	52 min
Apr 23, 7:22 PM CDT	Severe Thunderstorm Warning	SHV	Hempstead, Nevada	38 min
Apr 23, 7:45 PM CDT	Tornado Warning	SHV	Hempstead, Nevada	45 min
Apr 23, 8:12 PM CDT	Tornado Warning	SHV	Lafayette, Miller	48 min
Apr 24, 3:55 AM CDT	Severe Thunderstorm Warning	SHV	Hempstead, Howard, Little River, Nevada, Sevier	50 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.