Alert archive / Louisiana / Tornado Warnings in 2009

Tornado Warning 33, NWS Shreveport, LA

April 9, 2009Jackson Parish, Lincoln Parish, Ouachita Parish, Louisiana

NWS Shreveport, LA issued this tornado warning at Apr 9, 2009, 11:48 PM CDT for Jackson Parish, Lincoln Parish, Ouachita Parish, Louisiana. It was in force for 42 min. 3 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 9, 2009, 11:48 PM CDT (04:48 UTC)
Expired: Apr 10, 2009, 12:30 AM CDT
In force: 42 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon

Counties Jackson Parish, LA, Lincoln Parish, LA, Ouachita Parish, LA

The radar

The Shreveport radar (KSHV), 124 km from the middle of the area, began a volume at 04:47 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.

What was reported inside it

Time	Report	Where	Remark
Apr 10, 12:05 AM CDT	TORNADO	5 Nw Eros, LA	AN EF2 TORNADO TOUCHED DOWN ALONG OLIVE GROVE ROAD AND TRAVELLED 11.7 MILES INTO SOUTHWEST OUACHITA PARISH. NUMEROUS TREES WERE SNAPPED AND UPROOTED. THE WORST DAMAGE OCCURRED TO HOMES ALONG ANTIOCH CHURCH ROAD AND OLD JONESBORO ROAD WHERE AT LEAST A DOZEN HOM
Apr 10, 12:12 AM CDT	TORNADO	4 Ene Eros, LA	TREES ON HOUSES ON GUYTON LOOP ROAD
Apr 10, 12:22 AM CDT	TORNADO	9 Sw Brownsville-Bawcom, LA	REPORT OF A TRAILER HOUSE BLOWN OVER ON JONESBORO ROAD...NO INJURIES

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 3 storm reports to this tornado warning; the first came 17 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 9, 9:10 PM CDT	Tornado Watch	SPC	4 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 4.8 hours before the alert went out and 116 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: 938 J/kg
Mixed-layer CIN: -186 J/kg
Mixed-layer LCL: 814 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 370 m²/s²
0-3 km storm-relative helicity: 290 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 4.5

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KSHV 100448
TORSHV
LAC049-061-073-100530-
/O.NEW.KSHV.TO.W.0033.090410T0448Z-090410T0530Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
1148 PM CDT THU APR 9 2009

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN JACKSON PARISH IN NORTH CENTRAL LOUISIANA...
  SOUTHEASTERN LINCOLN PARISH IN NORTH CENTRAL LOUISIANA...
  THIS INCLUDES THE CITIES OF...RUSTON...GRAMBLING...
  SOUTHWESTERN OUACHITA PARISH IN NORTH CENTRAL LOUISIANA...

* UNTIL 1230 AM CDT

* AT 1147 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 6 MILES SOUTH OF
  GRAMBLING...MOVING EAST AT 35 MPH. THIS STORM HAS A HISTORY OF 
  PRODUCING A TORNADO EARLIER AS WELL AS LARGE HAIL. 

* THE TORNADO WILL BE NEAR...
  KELLEYS BY MIDNIGHT CDT...
  CARTWRIGHT BY 1210 AM CDT...
  EROS AND INDIAN VILLAGE BY 1215 AM CDT...
  OKALOOSA...CADERVILLE AND MINERAL SPRINGS BY 1220 AM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 200 AM CDT FRIDAY MORNING FOR
SOUTHWESTERN ARKANSAS AND NORTHWESTERN LOUISIANA AND NORTHEAST TEXAS.

&&

LAT...LON 3230 9228 3237 9276 3240 9277 3255 9275
      3259 9227
TIME...MOT...LOC 0447Z 278DEG 31KT 3243 9270

$$

13

1 follow-up statement

000 
WWUS54 KSHV 100506
SVSSHV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1206 AM CDT FRI APR 10 2009

LAC049-061-073-100530-
/O.CON.KSHV.TO.W.0033.000000T0000Z-090410T0530Z/
LINCOLN LA-OUACHITA LA-JACKSON LA-
1206 AM CDT FRI APR 10 2009

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1230 AM CDT FOR
JACKSON...OUACHITA AND LINCOLN PARISHES...

AT 1205 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR CARTWRIGHT...OR 12
MILES SOUTHEAST OF RUSTON...MOVING EAST AT 35 MPH.

EROS IS IN THE PATH OF THIS STORM. IF YOU LIVE IN EROS AND MINERAL 
SPRINGS...TAKE COVER IMMEDIATELY. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 200 AM CDT FRIDAY MORNING FOR
SOUTH CENTRAL ARKANSAS AND NORTHWESTERN LOUISIANA.

&&

LAT...LON 3235 9255 3253 9255 3259 9227 3230 9228
TIME...MOT...LOC 0505Z 278DEG 31KT 3242 9248

$$

13

What forecasters said that day

The local office's own words before this tornado 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 tornado warning went out at Apr 9, 11:33 PM CDT, 15 minutes earlier.

Area forecast discussion, Apr 9, 11:33 PM CDT, 15 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SHREVEPORT LA
1133 PM CDT THU APR 9 2009

.UPDATE...
TO REMOVE MANY WESTERN COUNTIES AND PARISHES FROM TOR WATCH 126.
DEW POINTS REMAIN HIGH OVER THESE AREAS...BUT THE MID LEVEL ENERGY
AND MAIN LIFT IS MOVING OUT AHEAD OF THE SURFACE BOUNDARY.

&&

.PRELIMINARY POINT TEMPS/POPS...
SHV  77  58  69  49  72 /  30  30   0   0   0
MLU  78  62  72  49  71 /  20  50  10   0   0
DEQ  75  51  64  43  70 /  40  20   0   0   0
TXK  76  54  65  46  71 /  40  30   0   0   0
ELD  77  59  69  48  71 /  30  50   0   0   0
TYR  81  53  72  48  73 /  30  30   0   0  10
GGG  80  55  70  48  73 /  30  30   0   0  10
LFK  82  60  72  51  75 /  30  30  10  10  20

&&

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

24

Hazardous weather outlook, Apr 9, 12:06 PM CDT, 11 hours 42 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SHREVEPORT LA
1206 PM CDT THU APR 9 2009

ARZ050-051-059>061-070>073-LAZ001>006-010>014-OKZ077-TXZ096-097-
108>112-124>126-138-151-101715-
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-MCCURTAIN-
BOWIE-FRANKLIN-TITUS-CAMP-MORRIS-CASS-WOOD-UPSHUR-MARION-HARRISON-
PANOLA-
1206 PM CDT THU APR 9 2009

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

.DAY ONE...THIS AFTERNOON AND TONIGHT...
THERE IS A SLIGHT RISK FOR SEVERE THUNDERSTORMS LATE THIS
AFTERNOON THROUGH THE EVENING HOURS ACROSS MCCURTAIN COUNTY IN
SOUTHEAST OKLAHOMA...SOUTHWEST ARKANSAS...NORTHEAST TEXAS AS WELL
AS NORTHWEST AND NORTH CENTRAL LOUISIANA. A STRONG UPPER LEVEL
STORM SYSTEM...WITH A WELL DEFINED SURFACE LOW... WILL MOVE ACROSS
OKLAHOMA THIS AFTERNOON. STRONG TO SEVERE THUNDERSTORMS IN THE
FORM OF SUPERCELLS COULD DEVELOP IN THE AIRMASS AHEAD OF A
DRYLINE...ASSOCIATED WITH THIS LOW. THIS SEVERE WEATHER THREAT IS
VERY CONDITIONAL AS THERE IS A VERY STRONG CAPPING INVERSION IN
PLACE TODAY. MOISTURE RETURN IS ALSO IN QUESTION. HOWEVER...THE
CAP WILL LIKELY WEAKEN JUST WEST OR NEAR THE COUNTY WARNING AREA
BY LATE THIS AFTERNOON. THE END RESULT WILL BE SCATTERED SHOWERS
AND THUNDERSTORMS...SOME OF WHICH WILL HAVE THE LIKELIHOOD OF
PRODUCING STRONG AND DAMAGING WIND GUSTS ALONG WITH LARGE HAIL.
ISOLATED TORNADOES CANNOT BE RULED OUT...BUT A GREATER TORNADIC
THREAT EXISTS NORTH OF THE FOUR STATE REGION. THE STORMS WILL
LIKELY WEAKEN AS WE TRANSITION INTO THE LATE NIGHT HOURS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY...
OVER THE WEEKEND...A MUCH STRONGER STORM SYSTEM WILL AFFECT THE
FOUR STATE REGION DURING THE DAY EASTER SUNDAY INTO SUNDAY NIGHT.
THERE WILL HE A HEIGHTENED SEVERE WEATHER THREAT WITH LARGE
HAIL...HIGH AND DAMAGING WINDS...AND ISOLATED TORNADOES...ALONG
WITH LOCALLY HEAVY RAINFALL AND FLOODING.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVITY WILL LIKELY BE NEEDED ACROSS SOUTHEAST
OKLAHOMA...AND PORTIONS OF NORTHEAST TEXAS AND SOUTHWEST ARKANSAS...
ALONG AND NORTH OF INTERSTATE 30. SOUTH OF INTERSTATE 30...SEVERE
WEATHER WILL BE MORE QUESTIONABLE...HOWEVER...SPOTTER ACTIVITATION
REMAINS A POSSIBILITY AS FAR SOUTH AS AROUND THE INTERSTATE 20 CORRIDOR.

LAZ017>022-TXZ136-137-149-150-152-153-165>167-101715-
SABINE LA-NATCHITOCHES-WINN-GRANT-CALDWELL-LA SALLE-SMITH-GREGG-
CHEROKEE-RUSK-NACOGDOCHES-SHELBY-ANGELINA-SAN AUGUSTINE-SABINE TX-
1206 PM CDT THU APR 9 2009

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

.DAY ONE...THIS AFTERNOON AND TONIGHT...
FURTHER SOUTH ACROSS THE DEEP EAST TEXAS LAKES COUNTRY OF
NORTHEAST TEXAS INTO WEST CENTRAL AND EAST CENTRAL LOUISIANA...
SCATTERED SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE AS WE
TRANSITION INTO THE LATE AFTERNOON HOURS...THROUGH THIS EVENING.
THE SEVERE WEATHER THREAT IS MAINLY NORTH OF THE
REGION...HOWEVER... STORMS COULD DEVELOP SOUTH ALONG THE DRYLINE
AND POSE A HAIL OR WIND THREAT.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY...
OVER THE WEEKEND...A MUCH STRONGER STORM SYSTEM WILL AFFECT THE
FOUR STATE REGION DURING THE DAY EASTER SUNDAY INTO SUNDAY NIGHT.
THERE WILL HE A HEIGHTENED SEVERE WEATHER THREAT WITH LARGE
HAIL...HIGH AND DAMAGING WINDS...AND ISOLATED TORNADOES...ALONG
WITH LOCALLY HEAVY RAINFALL AND FLOODING.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL MOST LIKELY NOT BE NEEDED ACROSS THE
SOUTHERN THIRD OF DEEP EAST TEXAS AS WELL AS WEST CENTRAL AND EAST
CENTRAL LOUISIANA LATE THIS AFTERNOON AND TONIGHT.

In the hours before

Local storm report, Apr 9, 10:43 PM CDT, 1 hour 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1043 PM CDT THU APR 09 2009

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

1035 PM     HAIL             11 WNW JUNCTION CITY    33.10N 92.90W
04/09/2009  M1.75 INCH       UNION              AR   LAW ENFORCEMENT

            ARKANSAS STATE POLICE REPORT OF GOLF BALL SIZED HAIL NEAR
            THREE CREEKS.

&&

ASTEVENS

Local storm report, Apr 9, 10:58 PM CDT, 50 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1058 PM CDT THU APR 09 2009

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

1053 PM     TORNADO          SHREVEPORT              32.47N 93.80W
04/09/2009                   CADDO              LA   LAW ENFORCEMENT

            *** 1 INJ *** TREE FELL ON CAR. 3100 BLOCK OF ASTON.
            WOMAN TRAPPED IN CAR.

&&

ASTEVENS

Local storm report, Apr 9, 11:06 PM CDT, 42 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1106 PM CDT THU APR 09 2009

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

1104 PM     HAIL             9 WNW JUNCTION CITY     33.09N 92.86W
04/09/2009  E1.25 INCH       UNION              AR   LAW ENFORCEMENT

            ARKANSAS STATE POLICE VEHICLE DAMAGED FROM HAIL

&&

04

Local storm report, Apr 9, 11:09 PM CDT, 39 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1109 PM CDT THU APR 09 2009

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

1104 PM     HAIL             9 WNW JUNCTION CITY     33.07N 92.87W
04/09/2009  M1.25 INCH       UNION              AR   LAW ENFORCEMENT

            ARKANSAS STATE POLICE VEHICLE DAMAGED BY HAIL.

&&

ASTEVENS

Local storm report, Apr 9, 11:25 PM CDT, 23 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1125 PM CDT THU APR 09 2009

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

1123 PM     HAIL             GIBSLAND                32.54N 93.05W
04/09/2009  M1.00 INCH       BIENVILLE          LA   LAW ENFORCEMENT

&&

ASTEVENS

Local storm report, Apr 9, 11:34 PM CDT, 14 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1134 PM CDT THU APR 09 2009

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

1110 PM     HAIL             GIBSLAND                32.54N 93.05W
04/09/2009  E1.00 INCH       BIENVILLE          LA   NWS EMPLOYEE

            GIBSON EXIT ON I-20

&&

ASTEVENS

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 9, 9:37 PM CDT	Severe Thunderstorm Warning	SHV	Bossier, Caddo	38 min
Apr 9, 9:50 PM CDT	Tornado Warning	SHV	Bossier, Caddo	39 min
Apr 9, 9:53 PM CDT	Severe Thunderstorm Warning	SHV	Bossier, Caddo	52 min
Apr 9, 9:54 PM CDT	Tornado Warning	SHV	Claiborne, Webster	51 min
Apr 9, 9:58 PM CDT	Tornado Warning	SHV	Bossier, Caddo	47 min
Apr 9, 10:13 PM CDT	Tornado Warning	SHV	Claiborne, Webster	47 min
Apr 9, 10:22 PM CDT	Severe Thunderstorm Warning	SHV	Claiborne, Union	53 min
Apr 9, 10:33 PM CDT	Tornado Warning	SHV	Bossier, Webster	27 min
Apr 9, 10:39 PM CDT	Tornado Warning	SHV	Claiborne, Union	66 min
Apr 9, 10:52 PM CDT	Tornado Warning	SHV	Bienville, Webster	23 min
Apr 9, 11:12 PM CDT	Tornado Warning	SHV	Bienville, Jackson, Lincoln, Webster	48 min
Apr 10, 12:17 AM CDT	Tornado Warning	SHV	Ouachita	43 min

Nearby

Tornado Warnings in Louisiana, 2009 Every tornado warning in 2009 Tornadoes in 2009

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; radar from the NEXRAD Level II archive.