Alert archive / Texas / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 163, NWS Shreveport, LA

August 9, 2014Red River County, Texas

NWS Shreveport, LA issued this severe thunderstorm warning at Aug 9, 2014, 6:45 PM CDT for Red River County, Texas. It was in force for 24 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
Aug 9, 2014, 6:45 PM CDT (23:45 UTC)
Expired
Aug 9, 2014, 7:09 PM CDT
In force
24 min
Issued by
NWS Shreveport, LA
Area
Storm-based polygon

County Red River County, TX

The radar

The Shreveport radar (KSHV), 172 km from the middle of the area, began a volume at 23:45 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, 11.8 hours before the alert went out and 175 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, Shreveport, LA at 12:00Z on 2014-08-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1841 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, Shreveport, LA at 12:00Z on 2014-08-09The 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
1841 J/kg
Mixed-layer CIN
-123 J/kg
Mixed-layer LCL
870 m above ground
0-6 km bulk shear
5 kt
0-1 km storm-relative helicity
-44 m²/s²
0-3 km storm-relative helicity
11 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 Aug 9, 4:14 PM CDT, 2 hours 31 minutes earlier.

Area forecast discussion, Aug 9, 4:14 PM CDT, 2 hours 31 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SHREVEPORT LA
414 PM CDT SAT AUG 9 2014

.DISCUSSION...
AN ARRAY OF WEATHER OBSERVED ACROSS THE REGION SO FAR TODAY AS
CLOUDU AND RAIN-COOLED AREAS ACROSS SE OK AND ESPECIALLY SW AR
HAVE STRUGGLED TO REACH 80 DEGREES THIS AFTERNOON...IN RESPONSE TO
AN ACTIVE AREA OF CONVECTION EARLIER IN THE DAY THAT PRODUCED 3-4
INCHES OF RAINFALL IN SOME LOCATIONS WITH ISOLATED HIGHER AMOUNTS.
THIS AREA OF CONVECTION HAS SINCE DIMINISHED BUT ADDITIONAL SHWRS
AND TSTMS HAVE FORMED ALONG THE INTERSTATE 20 CORRIDOR IN N LA
NEAR A RIBBON OF HIGHER THETA E THAT EXTENDS WELL EAST IN MS/AL.
THIS AREA OF ENHANCED INSTABILITY ALSO EXTENDS BACK INTO NE TX AS
MUCH OF THE ONGOING CONVECTION IS TRACKING ALONG THE NRN AND ERN
PERIPHERY OF THE UPPER LEVEL RIDGE. SO FOR THIS EVENING...HAVE
KEPT SLIGHT CHANCE TO LOW CHANCE POPS ACROSS MOST OF THE REGION
WITH THE EXCEPTION OF DEEP E TX. AS FOR TEMPERATURES TONIGHT...A
COOLER DAY ACROSS OUR NRN TIER COUNTIES SHOULD YIELD LOWS DOWN IN
THE LOWER 70S WHILE MID TO UPPER 70S WILL BE COMMON FARTHER SOUTH.

ANOTHER HOT DAY EXPECTED ON SUNDAY WITH MOSTLY MID TO UPPER 90S
EXCEPT IN AREAS WHERE CLOUD COVER AND CONVECTION IS LONG-LIVED
DURING THE AFTERNOON. RELIEF FROM THE HEAT WILL COME LATE MONDAY
INTO TUESDAY AS A LATE SUMMER FRONTAL BOUNDARY ADVANCES THROUGH
THE REGION BRINGING SLIGHTLY ENHANCED RAIN CHANCES. TEMPERATURES
ARE EXPECTED TO DIP AT LEAST A FEW DEGREES FOR BOTH AFTERNOON
HIGHS AND OVERNIGHT LOWS IN THE WAKE OF THE FRONT. RAIN CHANCES
WILL GRADUALLY DECREASE INTO WEDNESDAY AND THROUGH THE REMAINDER
OF THE WORK WEEK AS THE FRONT ADVANCES DOWN ALONG THE GULF COAST.
TEMPERATURES WILL GRADUALLY INCH BACK UP CLOSER TO NORMAL OR JUST
SLIGHTLY ABOVE AVERAGE THROUGH THE END OF THE EXTENDED PERIOD.
/19/

&&

.PRELIMINARY POINT TEMPS/POPS...
SHV  77  96  78  98  75 /  20  30  20  30  30
MLU  74  95  76  95  75 /  20  40  30  30  30
DEQ  70  94  73  91  71 /  30  30  30  20  30
TXK  72  94  75  94  74 /  20  30  30  30  30
ELD  73  94  74  95  73 /  20  40  30  30  30
TYR  77  97  78  97  75 /  20  20  10  20  30
GGG  76  96  77  97  74 /  20  20  20  20  30
LFK  77  97  77  97  76 /  10  20  10  20  30

&&

.SHV WATCHES/WARNINGS/ADVISORIES...
AR...NONE.
LA...NONE.
OK...NONE.
TX...NONE.
&&

19
Hazardous weather outlook, Aug 9, 11:57 AM CDT, 6 hours 48 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SHREVEPORT LA
1157 AM CDT SAT AUG 9 2014

ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-
TXZ096-097-108>112-124>126-136>138-149>153-165>167-101215-
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-
1157 AM CDT SAT AUG 9 2014

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...

SCATTERED SHOWERS AND THUNDERSTORMS WILL AFFECT MUCH OF THE REGION
AGAIN TODAY...ESPECIALLY ACROSS SOUTHWEST ARKANSAS WHERE HEAVY
RAINFALL MAY LEAD TO ISOLATED FLASH FLOODING OF MOSTLY RURAL AND
SECONDARY ROADS IN LOW LYING AND POOR DRAINAGE AREAS. IN
ADDITION...A FEW ISOLATED STORMS MAY ALSO PRODUCE SOME GUSTY
WINDS. OTHER AREAS MAINLY ACROSS EAST TEXAS AND NORTH LOUISIANA
MAY APPROACH HEAT ADVISORY CRITERIA THIS AFTERNOON AS A VERY
MOIST AND HUMID AIR MASS COMBINE WITH THE HOT TEMPERATURES TO
PRODUCE HEAT INDEX VALUES NEAR 105 DEGREES IN SOME LOCATIONS.
HOWEVER...NO WIDESPREAD HAZARDOUS WEATHER IS EXPECTED AT THIS
TIME.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY...

SCATTERED THUNDERSTORMS WILL REMAIN POSSIBLE EACH DAY THROUGH
MUCH OF THE NEXT SEVEN DAYS...MAINLY DURING THE AFTERNOON AND
EARLY EVENING HOURS. NO WIDESPREAD HAZARDOUS WEATHER IS EXPECTED
AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

ACTIVATION OF EMERGENCY MANAGEMENT PERSONNEL...AMATEUR RADIO
OPERATORS AND STORM SPOTTERS WILL NOT BE NEEDED THROUGH TONIGHT.

19

In the hours before

Local storm report, Aug 9, 12:58 PM CDT, 5 hours 47 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1258 PM CDT SAT AUG 09 2014

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

1254 PM     FLASH FLOOD      DE QUEEN                34.04N  94.34W
08/09/2014                   SEVIER             AR   LAW ENFORCEMENT

            REPORTS OF FLASH FLOODING ON NUMEROUS COUNTY ROADS.

&&

EVENT NUMBER SHV1400504

20
Local storm report, Aug 9, 1:08 PM CDT, 5 hours 37 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
108 PM CDT SAT AUG 09 2014

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

1258 PM     FLASH FLOOD      6 NNW LOCKESBURG        34.05N  94.21W
08/09/2014                   SEVIER             AR   LAW ENFORCEMENT

            WATER UP TO THE BOTTOM OF THE COSSATOT RIVER BRIDGE ON
            HWY 71...BETWEEN DE QUEEN AND LOCKESBURG.

&&

EVENT NUMBER SHV1400505

20
Local storm report, Aug 9, 1:23 PM CDT, 5 hours 22 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE SHREVEPORT LA
123 PM CDT SAT AUG 09 2014

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

1230 PM     FLASH FLOOD      6 NNW LOCKESBURG        34.05N  94.21W
08/09/2014                   SEVIER             AR   LAW ENFORCEMENT

            WATER UP TO THE BOTTOM OF THE COSSATOT RIVER BRIDGE ON
            HWY 71...BETWEEN DE QUEEN AND LOCKESBURG.

&&

CORRECTED EVENT TIME

EVENT NUMBER SHV1400505

20
Special weather statement, Aug 9, 3:23 PM CDT, 3 hours 22 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
323 PM CDT SAT AUG 9 2014

LAZ014-092115-
OUACHITA-
323 PM CDT SAT AUG 9 2014

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A SIGNIFICANT
WEATHER ADVISORY...EFFECTIVE UNTIL 415 PM CDT...FOR THE FOLLOWING
PARISH...

IN NORTH CENTRAL LOUISIANA...
     OUACHITA...

INCLUDING THE FOLLOWING LOCATIONS...
     SWARTZ...

AT 323 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
DETECTING A STRONG THUNDERSTORM JUST NORTH OF SWARTZ...MOVING SOUTHEAST
AT 15 MPH.

WINDS 40 TO 50 MPH ARE EXPECTED WITH THIS STORM. SHOULD THIS STORM
INTENSIFY...A SEVERE THUNDERSTORM WARNING WILL BE NEEDED.

15
Special weather statement, Aug 9, 5:14 PM CDT, 1 hour 31 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
514 PM CDT SAT AUG 9 2014

LAZ004-092300-
CLAIBORNE-
514 PM CDT SAT AUG 9 2014

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A SIGNIFICANT
WEATHER ADVISORY...EFFECTIVE UNTIL 600 PM CDT...FOR THE FOLLOWING
PARISH...

IN NORTHWEST LOUISIANA...
     CLAIBORNE...

INCLUDING THE FOLLOWING LOCATIONS...
     HOMER...

AT 514 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
DETECTING A STRONG THUNDERSTORM 6 MILES NORTHEAST OF HOMER...MOVING
SOUTH AT 5 TO 10 MPH.

PEA SIZE HAIL...AND WINDS 40 TO 50 MPH ARE EXPECTED WITH THIS STORM.

15
Special weather statement, Aug 9, 6:18 PM CDT, 27 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 8, 10:42 PM CDTSevere Thunderstorm WarningSHVBowie, Red River63 min
Aug 9, 3:32 PM CDTSevere Thunderstorm WarningSHVOuachita34 min
Aug 9, 6:10 PM CDTSevere Thunderstorm WarningSHVClaiborne, Webster65 min
Aug 8, 9:45 PM CDTSevere Thunderstorm WarningSHVLittle River, Sevier60 min
Aug 8, 10:24 PM CDTSevere Thunderstorm WarningSHVLittle River, Sevier66 min
Aug 9, 10:20 AM CDTAreal Flood AdvisorySHVHempstead, Howard, Sevier3 hr
Aug 9, 11:21 AM CDTFlash Flood WarningSHVHempstead, Howard, Sevier3 hr
Aug 9, 2:19 PM CDTAreal Flood WarningSHVHempstead, Howard, Sevier3 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2014Every severe thunderstorm warning in 2014

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.