Alert archive / Louisiana / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 340, NWS Shreveport, LA

August 20, 1994Natchitoches Parish, Sabine Parish, Louisiana

NWS Shreveport, LA issued this severe thunderstorm warning at Aug 20, 1994, 10:25 PM CDT for Natchitoches Parish, Sabine Parish, Louisiana. It was in force for 65 min.

The area

The counties it named.

The facts

Issued
Aug 20, 1994, 10:25 PM CDT (03:25 UTC)
Expired
Aug 20, 1994, 11:30 PM CDT
In force
65 min
Issued by
NWS Shreveport, LA
Area
Whole counties

Counties Natchitoches Parish, LA, Sabine Parish, LA

The nearest sounding before it

Longview/Gregg, TX (KGGG), launched 00:00Z, 3.4 hours before the alert went out and 144 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, Longview/Gregg, TX at 00:00Z on 1994-08-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1666 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, Longview/Gregg, TX at 00:00Z on 1994-08-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 44 square meters per square second.1939Sfc1 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
1666 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
1398 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
44 m²/s²
0-3 km storm-relative helicity
85 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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.

In the hours before

Special weather statement, Aug 20, 5:01 PM CDT, 5 hours 24 minutes before
OKZ076-077-049-053-TXZ095-097-TXZ106>112-TXZ124>126-136>138-149>153-
166-167-ARZ050>053-ARZ059>061-ARZ066-ARZ070>073-LAZ001>026-202330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
500 PM CDT SAT AUG 20 1994

...SEVERE THUNDERSTORM WATCH IN EFFECT FOR SOUTHWEST ARKANSAS...
NORTHWEST LOUISIANA...NORTHEAST TEXAS AND SOUTHEAST OKLAHOMA...

AT 455 PM...THE NATIONAL WEATHER SERVICE RADAR IN SHREVEPORT SHOWED
TWO BANDS OF VERY STRONG THUNDERSTORMS SPREADING EAST SOUTHEAST ACROSS
NORTH SECTIONS OF THE ARKLATEX.  THESE STORMS WILL CONTINUE TO SPREAD
EAST SOUTHEAST ACROSS THE NORTH HALF OF THE ARKLATEX THIS EVENING
AND THE REMAINDER OF THE REGION TONIGHT.  THE MAIN THREAT FROM THESE
STORMS WILL BE HIGH WINDS AND WITH TREES IN FULL FOLLIAGE...THERE WILL
LIKELY BE TREE DAMAGE WITH THE HIGH WINDS.  HEAVY RAIN...FREQUENT
LIGHTNING ISOLATED HAIL WILL LIKELY OCCUR AS WELL.

AT 455 PM RADAR SHOWED A BAND OF SHOWERS AND THUNDERSTORMS FROM SOUTH-
EAST OF WARREN TO APPROACHING EL DORADO IN ARKANSAS TO APPROACHING
SPRING HILL IN LOUISIANA.  VERY STRONG THUNDERSTORMS WERE INDICATED
NEAR EL DORADO TO NEAR SPRINGHILL LOUISIANA.  THE AREA OF STORMS WERE
MOVING EAST SOUTHEAST AT 25 MILES AN HOUR.

ANOTHER BAND OF SHOWERS AND THUNDERSTORMS WERE INDICATED FROM NEAR
GLENWOOD ARKANSAS TO THE SOUTHEAST TIP OF OKLAHOMA NEAR TOM TO NEAR
WINNSBORO AND COOPER IN NORTHEAST TEXAS.  VERY STRONG THUNDERSTORMS
WERE INDICATED NEAR TOM OKLZAHOMA AND NEAR TALCO TEXAS.  THESE STORMS
WERE MOVING SOUTHEAST AT 30 MPH.
Special weather statement, Aug 20, 5:07 PM CDT, 5 hours 18 minutes before
OKZ076-077-049-053-TXZ095-097-TXZ106>112-TXZ124>126-136>138-149>153-
166-167-ARZ050>053-ARZ059>061-ARZ066-ARZ070>073-LAZ001>026-202330-

SPECIAL WEATHER STATEMENT...CORRECTED GRAMMAR...
NATIONAL WEATHER SERVICE SHREVEPORT LA
500 PM CDT SAT AUG 20 1994

...SEVERE THUNDERSTORM WATCH IN EFFECT FOR SOUTHWEST ARKANSAS...
NORTHWEST LOUISIANA...NORTHEAST TEXAS AND SOUTHEAST OKLAHOMA...

AT 455 PM...THE NATIONAL WEATHER SERVICE RADAR IN SHREVEPORT SHOWED
TWO BANDS OF VERY STRONG THUNDERSTORMS SPREADING EAST SOUTHEAST ACROSS
NORTH SECTIONS OF THE ARKLATEX.  THESE STORMS WILL CONTINUE TO SPREAD
EAST SOUTHEAST ACROSS THE NORTH HALF OF THE ARKLATEX THIS EVENING
AND THE REMAINDER OF THE REGION TONIGHT.  THE MAIN THREAT FROM THESE
STORMS WILL BE HIGH WINDS AND WITH TREES IN FULL FOLLIAGE...THERE WILL
LIKELY BE TREE DAMAGE WITH SOME STORMS.  HEAVY RAIN...FREQUENT
LIGHTNING AND ISOLATED HAIL WILL LIKELY OCCUR AS WELL.

AT 455 PM RADAR SHOWED A BAND OF SHOWERS AND THUNDERSTORMS FROM SOUTH-
EAST OF WARREN TO APPROACHING EL DORADO IN ARKANSAS TO APPROACHING
SPRING HILL IN LOUISIANA.  VERY STRONG THUNDERSTORMS WERE INDICATED
NEAR EL DORADO TO NEAR SPRINGHILL LOUISIANA.  THE AREA OF STORMS WAS
MOVING EAST SOUTHEAST AT 25 MILES AN HOUR.

ANOTHER BAND OF SHOWERS AND THUNDERSTORMS WERE INDICATED FROM NEAR
GLENWOOD ARKANSAS TO THE SOUTHEAST TIP OF OKLAHOMA NEAR TOM TO NEAR
WINNSBORO AND COOPER IN NORTHEAST TEXAS.  VERY STRONG THUNDERSTORMS
jWERE INDICATED NEAR TOM OKLAHOMA AND NEAR TALCO TEXAS.  THESE STORMS
WERE MOVING SOUTHEAST AT 30 MPH.
Local storm report, Aug 20, 8:30 PM CDT, 1 hour 55 minutes before
STORM REPORTS
NATIONAL WEATHER SERVICE SHREVEPORT LA
830 PM CDT SAT AUG 20 1994

STORM REPORT FOR SATURDAY AUGUST 20 1994

TIME CDT PARISH/COUNTY/STATE   EVENT/LOCATION

 620 PM  CASS          TX  SHERIFF`S OFFICE REPORTED 60-70 MPH WINDS....
                           TREES DOWNED...ROOF DAMAGE IN LINDEN.
 625 PM  CASS          TX  AVINGER...SEVERAL TREES DOWN AND POWER OUT
                           WITH MINOR ROOF DAMAGE DUE TO FALLING TREES.
 630 PM  CASS          TX  MARIETTA...HIGH WINDS OF 56 MPH CAUSED TREE
                           LIMB DAMAGE.
 632 PM  MARION        TX  HIGH WINDS AT KELLYVILLE WITH A FEW TREES
                           DOWN NORTH OF KELLYVILLE. SEVERAL LIMBS DOWN
                           ON ROADS BETWEEN KELLYVILLE AND JEFFERSON.
 640 PM  MARION        TX  HIGH WINDS DOWNED A FEW TREES AND DAMAGED A
                           FEW ANTENNAE SOUTH SHORE LAKE O PINES.
 658 PM  MARION        TX  HIGH WINDS BLEW DOWN SEVERAL TREES EAST OF
                           JEFFERSON.
 710 PM  CASS          TX  HIGH WINDS OF 60 TO 70 MPH DOWNED SEVERAL
                           TREES IN MC LEAD.
 712 PM  HARRISON      TX  HIGH WINDS IN THE KARNACK AREA DOWNED SEVERAL
                           TREES NEAR THE ENTRANCE TO CADDO STATE PARK.
 715 PM  MARION        TX  50 TO 60 MPH WINDS ESTIMATED AT GRAY AND
                           SEVERAL LARGE TREE LIMBS BLOWN OFF AT
                           SMITHLAND.
 720 PM  HARRISON      TX  SKYWARN OBSERVER ESTIMATED 60 MPH WITH PEA
                           SIZE HAIL.
 735 PM  CADDO         LA  40 TO 50 MPH WINDS AT OIL CITY AND VERY HEAVY
                           RAIN.
 742 PM  CADDO         LA  POWER OUTAGES IN NORTH HIGHLAND AREA IN NORTH
                           PART OF SHREVEPORT.
 742 PM  CADDO         LA  SEVERAL TREES DOWNED NEAR DIXIE.
 755 PM  CADDO         LA  WIND GUST TO 62 MPH AT JUNCTION OF US71 AND
                           HIGHWAY 1 NEAR TRINTY HEIGHTS SCHOOL OR 3
                           MILES NORTH OF DOWNTOWN AIRPORT.
 800 PM  CADDO         LA  55 MPH WIND REPORTED AT DOWNTOWN AIRPORT.
 810 PM  BOSSIER       LA  WIND GUSTS TO 50 MPH AT LA DOWNS.
 810 PM  BOSSIER       LA  TREES DOWNED 2 MILES SOUTH OF BENTON ON LA 3.
Local storm report, Aug 20, 8:38 PM CDT, 1 hour 47 minutes before
STORM REPORTS
NATIONAL WEATHER SERVICE SHREVEPORT LA
830 PM CDT SAT AUG 20 1994

STORM REPORT FOR SATURDAY AUGUST 20 1994

TIME CDT PARISH/COUNTY/STATE   EVENT/LOCATION

 620 PM  CASS          TX  SHERIFF`S OFFICE REPORTED 60-70 MPH WINDS....
                           TREES DOWNED...ROOF DAMAGE IN LINDEN.
 625 PM  CASS          TX  AVINGER...SEVERAL TREES DOWN AND POWER OUT
                           WITH MINOR ROOF DAMAGE DUE TO FALLING TREES.
 630 PM  CASS          TX  MARIETTA...HIGH WINDS OF 56 MPH CAUSED TREE
                           LIMB DAMAGE.
 632 PM  MARION        TX  HIGH WINDS AT KELLYVILLE WITH A FEW TREES
                           DOWN NORTH OF KELLYVILLE. SEVERAL LIMBS DOWN
                           ON ROADS BETWEEN KELLYVILLE AND JEFFERSON.
 640 PM  MARION        TX  HIGH WINDS DOWNED A FEW TREES AND DAMAGED A
                           FEW ANTENNAE SOUTH SHORE LAKE O PINES.
 658 PM  MARION        TX  HIGH WINDS BLEW DOWN SEVERAL TREES EAST OF
                           JEFFERSON.
 710 PM  CASS          TX  HIGH WINDS OF 60 TO 70 MPH DOWNED SEVERAL
                           TREES IN MC LEAD.
 712 PM  HARRISON      TX  HIGH WINDS IN THE KARNACK AREA DOWNED SEVERAL
                           TREES NEAR THE ENTRANCE TO CADDO STATE PARK.
 715 PM  MARION        TX  50 TO 60 MPH WINDS ESTIMATED AT GRAY AND
                           SEVERAL LARGE TREE LIMBS BLOWN OFF AT
                           SMITHLAND.
 720 PM  HARRISON      TX  SKYWARN OBSERVER ESTIMATED 60 MPH WITH PEA
                           SIZE HAIL.
 735 PM  CADDO         LA  40 TO 50 MPH WINDS AT OIL CITY AND VERY HEAVY
                           RAIN.
 742 PM  CADDO         LA  POWER OUTAGES IN NORTH HIGHLAND AREA IN NORTH
                           PART OF SHREVEPORT.
 742 PM  CADDO         LA  SEVERAL TREES DOWNED NEAR DIXIE.
 755 PM  CADDO         LA  WIND GUST TO 62 MPH AT JUNCTION OF US71 AND
                           HIGHWAY 1 NEAR TRINTY HEIGHTS SCHOOL OR 3
                           MILES NORTH OF DOWNTOWN AIRPORT.
 800 PM  CADDO         LA  55 MPH WIND REPORTED AT DOWNTOWN AIRPORT.
 810 PM  BOSSIER       LA  WIND GUSTS TO 50 MPH AT LA DOWNS.
 810 PM  BOSSIER       LA  TREES DOWNED 2 MILES SOUTH OF BENTON ON LA 3.
Local storm report, Aug 20, 9:55 PM CDT, 30 minutes before
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Local storm report, Aug 20, 9:59 PM CDT, 26 minutes before
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  <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.
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 20, 7:35 PM CDTSevere Thunderstorm WarningSHVBossier, Caddo85 min
Aug 20, 7:45 PM CDTSevere Thunderstorm WarningSHVRichland45 min
Aug 20, 8:38 PM CDTSevere Thunderstorm WarningSHVBienville, Bossier, Webster67 min
Aug 20, 8:51 PM CDTSevere Thunderstorm WarningSHVClaiborne, Lincoln, Union69 min
Aug 20, 8:51 PM CDTSevere Thunderstorm WarningSHVRed River69 min
Aug 20, 9:32 PM CDTSevere Thunderstorm WarningSHVDe Soto58 min
Aug 20, 9:32 PM CDTSevere Thunderstorm WarningSHVNatchitoches58 min
Aug 20, 9:32 PM CDTSevere Thunderstorm WarningSHVJackson58 min
Aug 20, 10:00 PM CDTSevere Thunderstorm WarningSHVWinn75 min
Aug 20, 10:00 PM CDTSevere Thunderstorm WarningSHVRed River75 min
Aug 20, 10:25 PM CDTSevere Thunderstorm WarningSHVDe Soto50 min
Aug 20, 10:48 PM CDTSevere Thunderstorm WarningSHVOuachita27 min
Aug 20, 10:48 PM CDTSevere Thunderstorm WarningSHVCaldwell, Richland57 min
Aug 20, 11:26 PM CDTSevere Thunderstorm WarningSHVFranklin, Madison, Tensas64 min
Aug 21, 3:23 AM CDTFlash Flood WarningSHVCaldwell, Franklin3 hr
Aug 20, 10:00 PM CDTSevere Thunderstorm WarningSHVShelby75 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 1994Every severe thunderstorm warning in 1994

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.