Alert archive / Texas / Special Weather Statements in 2016

Special Weather Statement, NWS Shreveport, LA

August 7, 2016Cass County, Texas

NWS Shreveport, LA issued this special weather statement at Aug 7, 2016, 2:30 PM CDT for Cass County, Texas. It was in force for 45 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 7, 2016, 2:30 PM CDT (19:30 UTC)
Expired: Aug 7, 2016, 3:15 PM CDT
In force: 45 min
Issued by: NWS Shreveport, LA

County Cass County, TX

The radar

The Shreveport radar (KSHV), 123 km from the middle of the area, began a volume at 19:30 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

Shreveport, LA (KBAD), launched 12:00Z, 7.5 hours before the alert went out and 126 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: 1165 J/kg
Mixed-layer CIN: -139 J/kg
Mixed-layer LCL: 1298 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: 11 m²/s²
0-3 km storm-relative helicity: 55 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Aug 7, 1:18 PM CDT, 1 hour 12 minutes earlier.

Area forecast discussion, Aug 7, 1:18 PM CDT, 1 hour 12 minutes before

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<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.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Hazardous weather outlook, Aug 7, 10:46 AM CDT, 3 hours 44 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SHREVEPORT LA
1046 AM CDT SUN AUG 7 2016

ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-
TXZ096-097-108>112-124>126-136>138-149>153-165>167-081200-
SEVIER-HOWARD-LITTLE RIVER-HEMPSTEAD-NEVADA-MILLER-LAFAYETTE-
COLUMBIA-UNION-CADDO-BOSSIER-WEBSTER-CLAIBORNE-LINCOLN-DE SOTO-
RED RIVER-BIENVILLE-JACKSON-OUACHITA-SABINE-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-
1046 AM CDT SUN AUG 7 2016

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...

HOT TEMPERATURES APPROACHING 100 DEGREES...WHEN COMBINED WITH
MODERATE HUMIDITY WILL PRODUCE HEAT INDEX VALUES OF 105 TO 109
DEGREES THIS AFTERNOON WITH A HEAT ADVISORY IN EFFECT. TAKE
PRECAUTIONS WHEN WORKING OR PLAYING OUTDOORS WITH BREAKS IN THE
SHADE...WATER AND IF POSSIBLE...IN AIR CONDITIONING. SOME RELIEF
WILL COME IN THE FORM OF SCATTERED SHOWERS AND THUNDERSTORMS WITH
STRONGER STORMS PRODUCING GUSTY WINDS...HEAVY DOWNPOURS...AND
DANGEROUS CLOUD TO GROUND LIGHTNING. WHEN THUNDER ROARS...GO
INDOORS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY...

SCATTERED AFTERNOON THUNDERSTORMS WILL CONTINUE INTO EARLY THIS
WEEK WITH COVERAGE BECOMING MORE ISOLATED LATER IN THE WEEK. IN
ADDITION...AFTERNOON HEAT INDEX VALUES WILL CONTINUE TO PEAK NEAR
OR ABOVE 105 DEGREES DURING THE AFTERNOON HOURS.

.SPOTTER INFORMATION STATEMENT...

ACTIVATION OF EMERGENCY MANAGEMENT PERSONNEL...AMATEUR RADIO
OPERATORS AND STORM SPOTTERS IS NOT ANTICIPATED THROUGH TONIGHT.

13

In the hours before

Special weather statement, Aug 7, 2:30 PM CDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
230 PM CDT SUN AUG 7 2016

TXZ097-111-112-072015-
CASS TX-MORRIS TX-BOWIE TX-
230 PM CDT SUN AUG 7 2016

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN MORRIS...
SOUTHWESTERN BOWIE AND NORTHWESTERN CASS COUNTIES UNTIL 315 PM CDT...

AT 230 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
NAPLES...OR 18 MILES SOUTHWEST OF NEW BOSTON. THIS STORM WAS NEARLY
STATIONARY.

WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
NAPLES...US 259 AND I 30 INTERSECTION...DOUGLASSVILLE...MARIETTA...
BRYANS MILL...SPRING HILL AND RED HILL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

&&

LAT...LON 3335 9479 3334 9479 3334 9478 3332 9475
      3336 9475 3341 9458 3316 9420 3304 9455
      3335 9480
TIME...MOT...LOC 1930Z 169DEG 1KT 3322 9458

20

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 6, 7:51 PM CDT	Areal Flood Advisory	SHV	Angelina, Nacogdoches, Sabine, San Augustine	3 hr
Aug 7, 3:20 PM CDT	Special Weather Statement	SHV	Morris	55 min
Aug 7, 3:39 PM CDT	Special Weather Statement	SHV	Cass	51 min
Aug 7, 3:47 PM CDT	Special Weather Statement	SHV	Sabine	28 min
Aug 7, 4:21 PM CDT	Special Weather Statement	SHV	Little River	39 min
Aug 7, 5:07 PM CDT	Special Weather Statement	SHV	Sevier	53 min
Aug 7, 5:21 PM CDT	Areal Flood Advisory	SHV	Little River, Sevier	114 min
Aug 7, 2:50 PM CDT	Special Weather Statement	SHV	McCurtain	55 min
Aug 7, 3:48 PM CDT	Special Weather Statement	SHV	McCurtain	57 min
Aug 7, 4:06 PM CDT	Areal Flood Advisory	SHV	McCurtain	3 hr

Nearby

Special Weather Statements in Texas, 2016 Every special weather statement in 2016

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.