Alert archive / Louisiana / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 99, NWS Shreveport, LA

April 28, 2014Bossier Parish, Caddo Parish, Webster Parish, Louisiana; Columbia County, Lafayette County, Miller County, Arkansas; Cass County, Marion County, Texas

NWS Shreveport, LA issued this severe thunderstorm warning at Apr 28, 2014, 2:40 AM CDT for Bossier Parish, Caddo Parish, Webster Parish, Louisiana; Columbia County, Lafayette County, Miller County, Arkansas; Cass County, Marion County, Texas. It was in force for 50 min. 5 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 28, 2014, 2:40 AM CDT (07:40 UTC)
Expired: Apr 28, 2014, 3:30 AM CDT
In force: 50 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon

Counties Columbia County, AR, Lafayette County, AR, Miller County, AR, Bossier Parish, LA, Caddo Parish, LA, Webster Parish, LA, Cass County, TX, Marion County, TX

What was reported inside it

Time	Report	Where	Remark
Apr 28, 3:03 AM CDT	TSTM WND DMG	1 E Hosston, LA	25-30 TREES DOWN... ONE TREE DAMAGED HOME ON KIRBY TRAIL
Apr 28, 3:09 AM CDT	TORNADO	Hosston, LA	AN EF2 TORNADO TOUCHED DOWN NEAR HOSSTON LA AND CROSSED INTO BOSSIER PARISH ENDING 5 MILES WEST OF PLAIN DEALING LA. NUMEROUS TREES WERE UPROOTED AND SNAPPED ALONG ITS PATH. ONE HOME IN HOSSTON RECEIVED MINOR DAMAGE...WHILE SEVERAL HOMES IN THE PLAIN DEALING A
Apr 28, 3:13 AM CDT	TORNADO	5 Ene Hosston, LA	* 1 INJ * HOME DAMAGED ON BUCKSHOT RD
Apr 28, 3:15 AM CDT	HAIL 0.88	Bradley, AR
Apr 28, 3:22 AM CDT	TSTM WND DMG	Plain Dealing, LA	MOBILE HOME DAMAGED BY LARGE TREE ON HIGHWAY 537 NEAR PLAIN DEALING

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 2 storm reports to this severe thunderstorm warning; the first came 23 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

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 27, 11:08 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Shreveport, LA (KBAD), launched 00:00Z, 7.7 hours before the alert went out and 69 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: 1893 J/kg
Mixed-layer CIN: -96 J/kg
Mixed-layer LCL: 1351 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 169 m²/s²
0-3 km storm-relative helicity: 215 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 5.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

605 
WUUS54 KSHV 280740
SVRSHV
ARC027-073-091-LAC015-017-119-TXC067-315-280830-
/O.NEW.KSHV.SV.W.0099.140428T0740Z-140428T0830Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
240 AM CDT MON APR 28 2014

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN CASS COUNTY IN NORTHEAST TEXAS...
  NORTHEASTERN MARION COUNTY IN NORTHEAST TEXAS...
  NORTHERN BOSSIER PARISH IN NORTHWEST LOUISIANA...
  NORTHWESTERN CADDO PARISH IN NORTHWEST LOUISIANA...
  NORTHWESTERN WEBSTER PARISH IN NORTHWEST LOUISIANA...
  THIS INCLUDES THE CITY OF SPRINGHILL...
  SOUTHWESTERN COLUMBIA COUNTY IN SOUTHWEST ARKANSAS...
  LAFAYETTE COUNTY IN SOUTHWEST ARKANSAS...
  THIS INCLUDES THE CITY OF LEWISVILLE...
  SOUTHERN MILLER COUNTY IN SOUTHWEST ARKANSAS...

* UNTIL 330 AM CDT

* AT 240 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 6 MILES
  SOUTHWEST OF MCLEOD...OR 16 MILES SOUTH OF ATLANTA...AND MOVING
  NORTHEAST AT 55 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  VIVIAN...RODESSA...RAVANNA...HOSSTON...IDA...DODDRIDGE...PLAIN
  DEALING...BRADLEY...CANFIELD...CULLEN...WELCOME...TAYLOR AND
  BUSSEY...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. IF A TORNADO
IS SPOTTED... ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY
STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

&&

LAT...LON 3341 9359 3294 9329 3279 9414 3295 9423
TIME...MOT...LOC 0740Z 245DEG 46KT 3292 9407

$$

13

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 28, 1:19 AM CDT, 1 hour 21 minutes earlier.

Area forecast discussion, Apr 28, 1:19 AM CDT, 1 hour 21 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SHREVEPORT LA
119 AM CDT MON APR 28 2014

.DISCUSSION...
ISSUED A QUICK UPDATE TO EXTEND TORNADO WATCH 105 SOUTHWARD TO
INCLUDE ADDITIONAL COUNTIES IN EAST TEXAS AND NORTH LOUISIANA
SOUTH OF THE EXISTING WATCH AS CONVECTION CONTINUES PROGRESSING
EASTWARD. UPDATE ALREADY OUT. /05/

&&

.PRELIMINARY POINT TEMPS/POPS...
SHV  84  57  78  49  71 /  30  10  30  10  10
MLU  85  61  80  51  71 /  50  30  30  10  10
DEQ  80  48  72  44  66 /  10  10  10  10  10
TXK  83  56  75  47  67 /  20  10  20  10  10
ELD  82  54  77  47  69 /  40  20  30  10  10
TYR  82  53  76  47  69 /  10  10  10  10  10
GGG  84  54  75  47  70 /  10  10  10  10  10
LFK  86  57  79  48  74 /  20  10  20  10  10

&&

.SHV WATCHES/WARNINGS/ADVISORIES...
AR...LAKE WIND ADVISORY FROM 10 AM THIS MORNING TO 4 PM CDT THIS
     AFTERNOON FOR THE FOLLOWING ZONES: ARZ073.

LA...LAKE WIND ADVISORY FROM 10 AM THIS MORNING TO 4 PM CDT THIS
     AFTERNOON FOR THE FOLLOWING ZONES:
     LAZ004>006-012>014-018>022.

OK...NONE.
TX...NONE.
&&

05

Hazardous weather outlook, Apr 27, 12:14 PM CDT, 14 hours 26 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SHREVEPORT LA
1214 PM CDT SUN APR 27 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>167-281100-
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-
1214 PM CDT SUN APR 27 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 SEVERE THUNDERSTORMS ARE EXPECTED TO DEVELOP THIS
AFTERNOON OVER NORTHEAST TEXAS...SOUTHEAST OKLAHOMA...SOUTHWEST
ARKANSAS...AND PORTIONS OF NORTH LOUISIANA...AHEAD OF AN
APPROACHING DRY LINE THAT WILL MIX EAST INTO EASTERN OKLAHOMA AND
EASTCENTRAL TEXAS...AND A STRONG UPPER LEVEL STORM SYSTEM OVER THE
CENTRAL PLAINS. THE AIR MASS HAS BECOME VERY UNSTABLE THIS
AFTERNOON...WITH STRONG WIND SHEAR THAT WILL AID RAPID DEVELOPMENT
AND ROTATION WITHIN THESE STORMS. DAMAGING WINDS...LARGE
HAIL...AND TORNADOES WILL BE POSSIBLE...SOME OF WHICH MAY BE
STRONG. LOCALLY HEAVY RAINFALL AND LOCALIZED FLOODING WILL BE
POSSIBLE AS WELL LATE THIS AFTERNOON AND EVENING OVER SOUTHWEST
ARKANSAS AND EXTREME NORTHERN LOUISIANA. THE SEVERE WEATHER THREAT
WILL CONTINUE THROUGH LATE TONIGHT ACROSS SOUTHCENTRAL ARKANSAS
AND NORTHCENTRAL LOUISIANA BEFORE WEAKENING.

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

SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO REDEVELOP
MONDAY OVER DEEP EAST TEXAS...NORTHCENTRAL LOUISIANA...AND
POSSIBLY SOUTHCENTRAL ARKANSAS...AS THE DRY LINE MIXES EAST INTO
THESE AREAS BY AFTERNOON. SCATTERED SEVERE THUNDERSTORMS WILL BE
POSSIBLE MAINLY OVER NORTHCENTRAL LOUISIANA...AS AN UNSTABLE AIR
MASS AGAIN DEVELOPS WITH STRONG HEATING. DAMAGING WINDS AND LARGE
HAIL WILL BE THE PRIMARY THREATS...ALTHOUGH ISOLATED TORNADOES CAN
NOT BE RULED OUT. THE SEVERE WEATHER THREAT SHOULD DIMINISH MONDAY
EVENING AS THE STORMS PUSH EAST INTO THE LOWER MISSISSIPPI VALLEY.

.SPOTTER INFORMATION STATEMENT...

ACTIVATION OF EMERGENCY MANAGERS...SKYWARN NETWORKS...AND AMATEUR
RADIO OPERATORS...WILL BE NEEDED THIS AFTERNOON AND TONIGHT.

15

In the hours before

Local storm report, Apr 28, 2:02 AM CDT, 38 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
202 AM CDT MON APR 28 2014

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

0157 AM     HAIL             2 N HUGHES SPRINGS      33.03N  94.63W
04/28/2014  E1.00 INCH       CASS               TX   TRAINED SPOTTER

&&

EVENT NUMBER SHV1400322

20

Local storm report, Apr 28, 2:12 AM CDT, 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
212 AM CDT MON APR 28 2014

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

0148 AM     HAIL             LONE STAR               32.94N  94.71W
04/28/2014  E1.75 INCH       MORRIS             TX   PUBLIC

&&

EVENT NUMBER SHV1400323

20

Local storm report, Apr 28, 2:15 AM CDT, 25 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
215 AM CDT MON APR 28 2014

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

0207 AM     HAIL             HOPE                    33.67N  93.59W
04/28/2014  E1.00 INCH       HEMPSTEAD          AR   PUBLIC

            PUBLIC REPORT RELAYED TO BROADCAST MEDIA.

&&

EVENT NUMBER SHV1400324

20

Local storm report, Apr 28, 2:30 AM CDT, 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
230 AM CDT MON APR 28 2014

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

0155 AM     HAIL             HUGHES SPRINGS          33.00N  94.63W
04/28/2014  E2.50 INCH       CASS               TX   TRAINED SPOTTER

&&

EVENT NUMBER SHV1400325

20

Local storm report, Apr 28, 2:32 AM CDT, 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
232 AM CDT MON APR 28 2014

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

0217 AM     HAIL             LINDEN                  33.01N  94.36W
04/28/2014  M1.50 INCH       CASS               TX   LAW ENFORCEMENT

            FROM LINDEN PD

&&

EVENT NUMBER SHV1400326

12

Local storm report, Apr 28, 2:40 AM CDT, 0 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
240 AM CDT MON APR 28 2014

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

0233 AM     HAIL             ATLANTA                 33.12N  94.16W
04/28/2014  E1.75 INCH       CASS               TX   AMATEUR RADIO

&&

EVENT NUMBER SHV1400327

20

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 28, 2:20 AM CDT	Lake Wind Advisory	SHV	Bienville, Caldwell, Claiborne, Grant, Jackson, LaSalle and 5 more	9 hr
Apr 28, 3:10 AM CDT	Tornado Warning	SHV	Bossier, Caddo, Webster	50 min
Apr 28, 3:44 AM CDT	Tornado Warning	SHV	Caddo, De Soto	46 min
Apr 28, 3:48 AM CDT	Severe Thunderstorm Warning	SHV	Claiborne, Webster	57 min
Apr 28, 5:27 AM CDT	Severe Thunderstorm Warning	SHV	Bienville, De Soto, Jackson, Natchitoches, Red River, Sabine and 1 more	48 min
Apr 28, 6:45 AM CDT	Severe Thunderstorm Warning	SHV	Sabine	45 min
Apr 28, 6:50 AM CDT	Severe Thunderstorm Warning	SHV	Caldwell, Jackson, Ouachita, Union	55 min
Apr 28, 7:26 AM CDT	Areal Flood Advisory	SHV	Bienville, Caldwell, Grant, Jackson, Lincoln, Natchitoches and 5 more	64 min
Apr 28, 8:24 AM CDT	Severe Thunderstorm Warning	SHV	Caldwell, Jackson, Ouachita, Winn	36 min
Apr 28, 3:45 PM CDT	Severe Thunderstorm Warning	SHV	Grant, LaSalle	60 min
Apr 28, 1:31 AM CDT	Severe Thunderstorm Warning	SHV	Hempstead, Lafayette, Miller	44 min
Apr 28, 2:05 AM CDT	Severe Thunderstorm Warning	SHV	Hempstead, Nevada	40 min
Apr 28, 2:07 AM CDT	Severe Thunderstorm Warning	SHV	Miller	38 min
Apr 27, 7:07 PM CDT	Severe Thunderstorm Warning	SHV	Camp, Franklin, Morris, Titus, Wood	53 min
Apr 27, 7:33 PM CDT	Tornado Warning	SHV	Camp, Morris, Titus	27 min
Apr 27, 7:54 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Cass, Morris, Titus	66 min
Apr 28, 12:03 AM CDT	Severe Thunderstorm Warning	SHV	Franklin, Wood	42 min
Apr 28, 1:12 AM CDT	Severe Thunderstorm Warning	SHV	Cherokee	63 min
Apr 28, 1:25 AM CDT	Severe Thunderstorm Warning	SHV	Camp, Cass, Marion, Morris, Titus, Upshur	50 min
Apr 28, 2:03 AM CDT	Tornado Warning	SHV	Cherokee, Rusk	57 min
Apr 28, 2:46 AM CDT	Tornado Warning	SHV	Panola, Rusk	29 min
Apr 28, 3:19 AM CDT	Tornado Warning	SHV	Panola, Rusk, Shelby	26 min
Apr 28, 3:31 AM CDT	Severe Thunderstorm Warning	SHV	Cherokee, Nacogdoches, Rusk	59 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 2014 Severe Thunderstorm Warnings in Arkansas, 2014 Severe Thunderstorm Warnings in Texas, 2014 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.