Alert archive / Louisiana / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 82, NWS Shreveport, LA

April 14, 2014Caldwell Parish, Louisiana

NWS Shreveport, LA issued this severe thunderstorm warning at Apr 14, 2014, 2:32 PM CDT for Caldwell Parish, Louisiana. It was in force for 28 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 14, 2014, 2:32 PM CDT (19:32 UTC)
Expired
Apr 14, 2014, 3:00 PM CDT
In force
28 min
Issued by
NWS Shreveport, LA
Area
Storm-based polygon

County Caldwell Parish, LA

The radar

The Ft Polk radar (KPOE), 132 km from the middle of the area, began a volume at 19:32 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.

IssuedProductOfficeLasted
Apr 14, 10:34 AM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Shreveport, LA (KBAD), launched 12:00Z, 7.5 hours before the alert went out and 159 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 2014-04-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2260 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 2014-04-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 104 square meters per square second.1939587897Sfc1 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
2260 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
648 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
104 m²/s²
0-3 km storm-relative helicity
79 m²/s²
Significant tornado parameter
0.6
Supercell composite
3.5

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 14, 1:24 PM CDT, 1 hour 8 minutes earlier.

Area forecast discussion, Apr 14, 1:24 PM CDT, 1 hour 8 minutes before
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Hazardous weather outlook, Apr 14, 11:16 AM CDT, 3 hours 16 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SHREVEPORT LA
1116 AM CDT MON APR 14 2014

LAZ001>006-010>014-017>022-TXZ124>126-136>138-149>153-165>167-
151630-
CADDO-BOSSIER-WEBSTER-CLAIBORNE-LINCOLN-UNION LA-DE SOTO-
RED RIVER-BIENVILLE-JACKSON-OUACHITA-SABINE LA-NATCHITOCHES-WINN-
GRANT-CALDWELL-LA SALLE-WOOD-UPSHUR-MARION-SMITH-GREGG-HARRISON-
CHEROKEE-RUSK-PANOLA-NACOGDOCHES-SHELBY-ANGELINA-SAN AUGUSTINE-
SABINE TX-
1116 AM CDT MON APR 14 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL
LOUISIANA...NORTHWEST LOUISIANA...EAST TEXAS AND NORTHEAST TEXAS.

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

A FEW OF THE SCATTERED THUNDERSTORMS THIS AFTERNOON WILL BE
CAPABLE OF PRODUCING HAIL TO THE SIZE OF QUARTERS...OR POSSIBLY
LARGER. HOWEVER...SINCE THESE STORMS ARE DEVELOPING MOSTLY BEHIND
THE PASSAGE OF A STRONG COLD FRONT...DAMAGING WINDS ARE ONLY A
VERY REMOTE THREAT WITH THESE STORMS. BRIEF HEAVY RAINFALL AND
DEADLY LIGHTNING MAY ALSO OCCUR.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY...

ISOLATED THUNDERSTORMS WILL RETURN TO THE REGION LATE THURSDAY
INTO FRIDAY WITH THE ARRIVAL OF OUR NEXT COLD FRONT. HOWEVER...NO
HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

DUE TO THE MARGINALLY SEVERE HAIL THREAT...AND LACK OF DAMAGING
WIND THREAT...STORM SPOTTER AND EMERGENCY MANAGER ACTIVATION IS
NOT ANTICIPATED AT THIS TIME.

ARZ050-051-059>061-070>073-OKZ077-TXZ096-097-108>112-151630-
SEVIER-HOWARD-LITTLE RIVER-HEMPSTEAD-NEVADA-MILLER-LAFAYETTE-
COLUMBIA-UNION AR-MCCURTAIN-RED RIVER-BOWIE-FRANKLIN-TITUS-CAMP-
MORRIS-CASS-
1116 AM CDT MON APR 14 2014

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

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

SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS ARE POSSIBLE...ENDING
LATER THIS AFTERNOON. NO HAZARDOUS WEATHER IS EXPECTED AT THIS
TIE.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY...

ISOLATED THUNDERSTORMS WILL RETURN TO THE REGION LATE THURSDAY
INTO FRIDAY WITH THE ARRIVAL OF OUR NEXT COLD FRONT. HOWEVER...NO
HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

ACTIVATION OF EMERGENCY MANAGEMENT PERSONNEL...AMATEUR RADIO
OPERATORS...AND STORM SPOTTERS...IS NOT EXPECTED FOR THIS
AFTERNOON OR TONIGHT.

VII

In the hours before

Local storm report, Apr 14, 1:03 PM CDT, 1 hour 29 minutes before
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Local storm report, Apr 14, 1:07 PM CDT, 1 hour 25 minutes before
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Special weather statement, Apr 14, 1:13 PM CDT, 1 hour 19 minutes before
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Local storm report, Apr 14, 1:29 PM CDT, 1 hour 3 minutes before
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Special weather statement, Apr 14, 1:32 PM CDT, 1 hour before
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Special weather statement, Apr 14, 1:34 PM CDT, 58 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Apr 13, 8:04 PM CDTLake Wind AdvisorySHVAngelina, Bowie, Camp, Cass, Cherokee, Franklin and 15 more3 hr
Apr 14, 12:02 AM CDTSevere Thunderstorm WarningSHVBowie, Morris, Red River, Titus58 min
Apr 14, 4:38 AM CDTFreeze WarningSHVRed River28 hr
Apr 14, 10:19 AM CDTSevere Thunderstorm WarningSHVSmith41 min
Apr 14, 11:05 AM CDTSevere Thunderstorm WarningSHVGregg, Upshur55 min
Apr 14, 11:56 AM CDTSevere Thunderstorm WarningSHVCass, Harrison, Marion64 min
Apr 14, 10:14 AM CDTSevere Thunderstorm WarningSHVBienville, Bossier, Caddo, Claiborne, Webster46 min
Apr 14, 10:53 AM CDTSevere Thunderstorm WarningSHVBienville, Claiborne, Lincoln, Union37 min
Apr 14, 11:31 AM CDTSevere Thunderstorm WarningSHVJackson, Lincoln, Ouachita, Union44 min
Apr 13, 10:01 PM CDTSevere Thunderstorm WarningSHVHoward, Sevier59 min
Apr 13, 10:08 PM CDTTornado WarningSHVHoward, Sevier37 min
Apr 13, 11:57 PM CDTSevere Thunderstorm WarningSHVHempstead, Howard, Nevada, Sevier48 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 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.