Alert archive / Louisiana / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 178, NWS Shreveport, LA

May 28, 20154 parishes in Louisiana

NWS Shreveport, LA issued this severe thunderstorm warning at May 28, 2015, 4:29 PM CDT for 4 parishes in Louisiana. It was in force for 36 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 28, 2015, 4:29 PM CDT (21:29 UTC)
Expired: May 28, 2015, 5:05 PM CDT
In force: 36 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Bienville Parish, LA, Jackson Parish, LA, Natchitoches Parish, LA, Winn Parish, LA

The radar

The Shreveport radar (KSHV), 92 km from the middle of the area, began a volume at 21:29 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

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 nearest sounding before it

Shreveport, LA (KBAD), launched 12:00Z, 9.5 hours before the alert went out and 86 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: 1140 J/kg
Mixed-layer CIN: -71 J/kg
Mixed-layer LCL: 949 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 50 m²/s²
0-3 km storm-relative helicity: 70 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

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

237 
WUUS54 KSHV 282129
SVRSHV
LAC013-049-069-127-282215-
/O.NEW.KSHV.SV.W.0178.150528T2129Z-150528T2215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
429 PM CDT THU MAY 28 2015

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN WINN PARISH IN NORTH CENTRAL LOUISIANA...
  SOUTHEASTERN BIENVILLE PARISH IN NORTHWESTERN LOUISIANA...
  SOUTHWESTERN JACKSON PARISH IN NORTH CENTRAL LOUISIANA...
  NORTHEASTERN NATCHITOCHES PARISH IN NORTHWESTERN LOUISIANA...

* UNTIL 515 PM CDT

* AT 428 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 17 MILES
  SOUTHEAST OF RINGGOLD...OR 18 MILES WEST OF JONESBORO...MOVING
  SOUTHEAST AT 15 MPH.

  HAZARD...60 MPH WIND GUSTS AND PENNY SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  JONESBORO...GOLDONNA...DODSON...SALINE...LUCKY...ASHLAND...
  FRIENDSHIP AND CHESTNUT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3219 9312 3231 9295 3213 9256 3189 9291
TIME...MOT...LOC 2128Z 325DEG 4KT 3221 9302 

HAIL...0.75IN
WIND...60MPH
 
$$

VII

1 follow-up statement

688 
WWUS54 KSHV 282205
SVSSHV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
505 PM CDT THU MAY 28 2015

LAC013-049-069-127-282214-
/O.CAN.KSHV.SV.W.0178.000000T0000Z-150528T2215Z/
WINN LA-BIENVILLE LA-JACKSON LA-NATCHITOCHES LA-
505 PM CDT THU MAY 28 2015

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN WINN...
SOUTHEASTERN BIENVILLE...SOUTHWESTERN JACKSON AND NORTHEASTERN
NATCHITOCHES PARISHES IS CANCELLED...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING HAS BEEN CANCELLED.  HOWEVER HEAVY RAIN IS
STILL POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 3219 9312 3231 9295 3213 9256 3189 9291
TIME...MOT...LOC 2203Z 325DEG 4KT 3218 9299 

$$

VII

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 May 28, 2:42 PM CDT, 1 hour 47 minutes earlier.

Area forecast discussion, May 28, 2:42 PM CDT, 1 hour 47 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SHREVEPORT LA
242 PM CDT THU MAY 28 2015

.DISCUSSION...
CONVECTION LATE THIS AFTERNOON TIED TO INSTABILITY AND RESIDUAL
BOUNDARIES LEFT OVER FROM THE MORNING MCS WHICH MOVED ACROSS THE
MIDDLE RED RIVER VALLEY OF NORTHERN TEXAS AND SOUTHERN OKLAHOMA.
OUTFLOW BOUNDARY CURRENTLY RESIDES FROM NEAR SULPHUR SPRINGS AND
MOUNT PLEASANT TO NEAR TEXARKANA AND EL DORADO ARKANSAS...MOVING
VERY SLOWLY SOUTHWARD. SLIGHTLY STRONGER CAPPING INVERSION IS
INHIBITING STORMS FROM FORMING ALONG THE TX PORTION OF THE
BOUNDARY BUT TEMPERATURES ARE NEAR 90 SOUTH OF THE BOUNDARY ATTM
SO WOULD NOT BE SURPRISED TO SEE A FEW STRONG TO SEVERE
THUNDERSTORMS FORM ON THIS BOUNDARY BEFORE CONVECTION BEGINS TO
DIE OFF LATER THIS EVENING.

VISIBLE SATELLITE IMAGERY SHOWING OUR NEXT WEATHER MAKER TAKING
SHAPE ACROSS THE TX HILL COUNTRY. THIS CONVECTION IN ASSOCIATION
WITH AN UPPER LEVEL TROUGH THAT IS LIKELY TO TRAVERSE ACROSS THE
STATE OF TX OVERNIGHT TONIGHT. SHORT TERM PROGS ARE IN PRETTY GOOD
AGREEMENT WITH THE DEVELOPMENT OF THIS SYSTEM AND ITS PROGRESSION
EASTWARD OVERNIGHT WITH THE EXCEPTION OF THE GFS WHICH FOR SOME
REASON LOOSES IT AFTER SUNRISE ON FRIDAY. THE HRRR SEEMS TO HAVE
THE BEST HANDLE ON THIS CONVECTION AFTER MIDNIGHT APPROACHING THE
I-35 CORRIDOR OF N/C TEXAS AND EVENTUALLY MOVING INTO OUR WESTERN
ZONES DURING THE PREDAWN/DAWN HOURS. THEREFORE...HAVE ORIENTED
HIGHER CHANCE POPS AFTER MIDNIGHT IN THE WEST WITH SLIGHT CHANCE
VARIETY IN THE EAST. ALL PROGS HAVE THIS WELL DEFINED UPPER TROUGH
AXIS IN THE VICINITY OF THE I-35 CORRIDOR TO OUR WEST ON FRIDAY
AND WITH PLENTIFUL MOISTURE IN PLACE NOT TO MENTION DIVERGENT FLOW
ALOFT...HAVE INCREASED POPS TO LIKELY ACROSS OUR WESTERN TWO
THIRDS FOR FRIDAY. THIS TROUGH AXIS SLOWLY MOVES ITS WAY EASTWARD
INTO NE TX/SW AR/NW LA FRI NIGHT/SAT AND STALLS OUT. COLD FRONT AT
THE SFC IN ASSOCIATION WITH THIS UPPER TROUGH MOVES OUR WAY AND
STALLS OUT SAT NIGHT/SUN AS WELL SOMEWHERE ACROSS OUR CWA AND WILL
SERVE AS A FOCUS FOR ADDITIONAL SHOWER AND THUNDERSTORM DEVELOPMENT...
MAINLY ACROSS OUR SOUTHEAST ZONES SUN NIGHT THROUGH EARLY NEXT
WEEK.

THERE CONTINUES TO BE MORE AND MORE CONSISTENCY WITH EACH NEW
MODEL RUN THAT THIS STAGNANT UPPER LEVEL TROUGH WILL BECOME
CUTOFF FROM THE WESTERLIES BY THE EARLY TO MIDDLE PORTION OF NEXT
WEEK. JUST WHERE THIS OCCURS IN RELATION TO OUR VICINITY COULD
RESULT IN A VERY WET WORK WEEK NEXT WEEK...TO ONLY WIDELY
SCATTERED VARIETY STORMS. FOR NOW...WILL KEEP THE EXTENDED POP
GRIDS CONSISTENT WITH PREVIOUS FORECASTS WITH HIGHER POPS ACROSS
OUR EASTERN ZONES NEXT WEEK WITH SLIGHT CHANCE VARIETY IN THE
WEST. IT MUST BE NOTED THAT IF THIS TROUGH CUTS OFF TO OUR
WEST...THEN MUCH HIGHER POPS WOULD BE THE END RESULT FOR A MUCH
LARGER PORTION OF OUR AREA NEXT WEEK.

TEMPERATURES SHOULD BE SLIGHTLY MILDER THIS UPCOMING WEEKEND GIVEN
THE EXPECTED STORM COVERAGE WITH BELOW NORMAL TEMPERATURES THROUGH
AT LEAST THE EARLY PORTION OF NEXT WEEK BEFORE WE BEGIN TO SEE
SOME RECOVERY BY LATE NEXT WEEK.

PRELIMS TO FOLLOW...13.

&&

.PREV DISCUSSION... /ISSUED 100 PM CDT THU MAY 28 2015/

AVIATION...
FOR THE 28/18Z TAFS...SCATTERED CONVECTION ONGOING THIS AFTERNOON
ACROSS THE REGION BUT MOST TERMINALS HAVE DODGED THUS FAR...ASIDE
FROM VCTS AT SHV/TXK. EXPECT ADDITIONAL SHWRS/TSTMS THROUGH THE
REMAINDER OF THE AFTERNOON AND INTO THE EVENING BUT COVERAGE IS
STILL NOT ENOUGH TO WARRANT ANY MORE THAN VCTS ATTM...SO WILL USE
AMENDMENTS IF NECESSARY FOR TSRA. WINDS TO REMAIN RATHER LIGHT AND
SOMEWHAT VARIABLE AT TIMES...WITH A PREDOMINANT SOUTH DIRECTION
FOR MUCH OF THE PERIOD. CLOUDS WILL BE LAYERED WITH INCREASING CU
THIS AFTERNOON ALONG WITH SOME MID AND HIGH CLOUDS MIXED IN AS
WELL. CONVECTIVE DEBRIS CLOUDS WILL LIKELY LINGER OVERNIGHT WITH
LOW STRATUS RETURNING CLOSER TO DAYBREAK ALONG WITH PATCHY FOG AND
REDUCED VSBYS. /19/

&&

.PRELIMINARY POINT TEMPS/POPS...
SHV  71  86  69  83 /  30  60  50  60
MLU  69  88  69  84 /  30  50  50  60
DEQ  67  82  67  80 /  40  60  50  60
TXK  69  84  68  82 /  30  60  50  60
ELD  67  86  69  82 /  30  50  50  60
TYR  72  83  69  82 /  40  60  50  60
GGG  72  85  69  83 /  40  60  50  60
LFK  71  86  70  86 /  40  60  50  60

&&

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

19/13

Hazardous weather outlook, May 28, 11:13 AM CDT, 5 hours 16 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SHREVEPORT LA
1113 AM CDT THU MAY 28 2015

ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-
TXZ096-097-108>112-124>126-136>138-149>153-165>167-291615-
SEVIER-HOWARD-LITTLE RIVER-HEMPSTEAD-NEVADA-MILLER-LAFAYETTE-
COLUMBIA-UNION-CADDO-BOSSIER-WEBSTER-CLAIBORNE-LINCOLN-DE SOTO-
RED RIVER-BIENVILLE-JACKSON-OUACHITA-SABINE-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-
1113 AM CDT THU MAY 28 2015

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 CONTINUE TO BE POSSIBLE
TODAY...AS A WEAK UPPER LEVEL DISTURBANCE AND THE REMNANTS OF A
COMPLEX OF SHOWERS AND THUNDERSTORMS MOVING OVER THE RED RIVER
VALLEY OF SOUTHERN OKLAHOMA...NORTHEAST TEXAS AND SOUTHWEST
ARKANSAS. WITH ADDITIONAL DAYTIME HEATING...EXPECT WIDELY
SCATTERED SHOWERS AND THUNDERSTORMS TO DEVELOP ACROSS NORTHERN
LOUISIANA AS WELL. WHILE WIDESPREAD SEVERE THUNDERSTORMS ARE NOT
EXPECTED...ISOLATED SEVERE THUNDERSTORMS CERTAINLY WILL BE
POSSIBLE. THESE COULD DOWN TREES AND POWERLINES WITH ANY OF THE
STRONGER WIND GUSTS. AS WE TRANSITION INTO TONIGHT...ANOTHER
COMPLEX OF STRONG TO SEVERE THUNDERSTORMS WILL BE MOVING OUR WAY
FROM NORTH CENTRAL TEXAS. THIS ACTIVITY COULD BEGIN MOVING INTO
PORTIONS OF NORTHEAST TEXAS AFTER MIDNIGHT TOWARDS DAYBREAK ON
FRIDAY.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY...

SHOWERS AND THUNDERSTORMS WILL AGAIN INCREASE ACROSS MUCH OF THE
REGION FRIDAY THROUGH SUNDAY...AHEAD OF AN UPPER LEVEL DISTURBANCE
THAT WILL DRIFT EAST ACROSS OKLAHOMA AND TEXAS AND BECOME
STATIONARY OVER THE AREA FRIDAY NIGHT THROUGH THIS WEEKEND. WHILE
AN ISOLATED SEVERE THUNDERSTORM THREAT WITH THE POTENTIAL FOR
DAMAGING WINDS CAN NOT BE RULED OUT...LOCALLY HEAVY RAINFALL WILL
BE POSSIBLE IN THE STRONGER STORMS...WITH RAINFALL AMOUNTS OF ONE
TO THREE INCHES EXPECTED. GIVEN THE ALREADY SATURATED
GROUNDS...LOCALIZED FLASH FLOODING WILL BE POSSIBLE. THIS UPPER
LEVEL DISTURBANCE WILL CONTINUE TO FOCUS ADDITIONAL SCATTERED
SHOWERS AND THUNDERSTORMS MONDAY THROUGH WEDNESDAY.

.SPOTTER INFORMATION STATEMENT...

ACTIVATION OF EMERGENCY MANAGERS...SKYWARN NETWORKS...AND AMATEUR
RADIO OPERATORS...MAY BE NEEDED THIS AFTERNOON INTO THE OVERNIGHT
HOURS OVER PORTIONS OF THE REGION.

13

In the hours before

Special weather statement, May 28, 1:29 PM CDT, 3 hours before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
129 PM CDT THU MAY 28 2015

LAZ002>004-281915-
CLAIBORNE LA-BOSSIER LA-WEBSTER LA-
129 PM CDT THU MAY 28 2015

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN CLAIBORNE...
NORTHEASTERN BOSSIER AND NORTHWESTERN WEBSTER PARISHES UNTIL 215 PM
CDT...

AT 128 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER
COTTON VALLEY...OR 11 MILES SOUTH OF SPRINGHILL...MOVING NORTHEAST AT
15 MPH.

HALF INCH HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
COTTON VALLEY...SAREPTA...SHONGALOO...EVERGREEN...COUCHWOOD...IVAN
AND LETON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

&&

LAT...LON 3272 9351 3285 9358 3302 9328 3302 9321
      3281 9310
TIME...MOT...LOC 1828Z 244DEG 14KT 3284 9345

VII

Special weather statement, May 28, 1:32 PM CDT, 2 hours 57 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
132 PM CDT THU MAY 28 2015

ARZ061-070>072-281915-
NEVADA AR-MILLER AR-LAFAYETTE AR-COLUMBIA AR-
132 PM CDT THU MAY 28 2015

...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL MILLER...SOUTHERN
NEVADA...NORTHEASTERN LAFAYETTE AND NORTHERN COLUMBIA COUNTIES UNTIL
215 PM CDT...

AT 130 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM
NEAR GARLAND EASTWARD TO LEWISVILLE AND STAMPS...MOVING NORTHEAST AT
10 MPH.

HALF INCH HAIL AND WINDS IN EXCESS OF 30 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
MAGNOLIA...STAMPS...WALDO...LEWISVILLE...MCNEIL...BUCKNER...
GARLAND...WILLISVILLE...SMITHLAND...VILLAGE...CALHOUN...MOUNT
VERNON...PINEY GROVE...BETHEL...SPIRIT LAKE...EBENEZER...MCKAMIE...
FALCON...LERCH AND COLLEGE HILL.

LAT...LON 3338 9312 3338 9304 3322 9300 3320 9379
      3337 9379 3361 9311
TIME...MOT...LOC 1830Z 241DEG 6KT 3341 9353

19

Special weather statement, May 28, 1:51 PM CDT, 2 hours 38 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
151 PM CDT THU MAY 28 2015

ARZ072-073-281915-
UNION AR-COLUMBIA AR-
151 PM CDT THU MAY 28 2015

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN UNION AND
NORTHEASTERN COLUMBIA COUNTIES UNTIL 215 PM CDT...

AT 151 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
VILLAGE...OR 7 MILES EAST OF MCNEIL...MOVING NORTHEAST AT 15 MPH.

HALF INCH HAIL AND WINDS IN EXCESS OF 30 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
SMACKOVER...VILLAGE...MOUNT HOLLY...MEDLOCK...LAUGHLIN AND EBENEZER.

LAT...LON 3321 9309 3336 9320 3341 9312 3338 9312
      3337 9279 3339 9276 3337 9270
TIME...MOT...LOC 1851Z 238DEG 15KT 3333 9308

19

Special weather statement, May 28, 2:11 PM CDT, 2 hours 18 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
211 PM CDT THU MAY 28 2015

ARZ073-282000-
UNION AR-
211 PM CDT THU MAY 28 2015

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN UNION COUNTY UNTIL
300 PM CDT...

AT 211 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
LISBON...OR 10 MILES WEST OF SMACKOVER...MOVING EAST AT 35 MPH.

HALF INCH HAIL AND WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH THIS
STORM.

LOCATIONS IMPACTED INCLUDE...
EL DORADO...SMACKOVER...NORPHLET...CALION...LISBON...MOUNT HOLLY...
CAIRO AND KENOVA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

&&

LAT...LON 3320 9296 3327 9298 3338 9297 3337 9279
      3339 9276 3338 9273 3336 9268 3336 9260
      3337 9259 3337 9255 3332 9252 3333 9250
      3333 9248 3332 9246 3329 9247 3327 9244
      3328 9238 3321 9238
TIME...MOT...LOC 1911Z 254DEG 32KT 3331 9289

VII

Special weather statement, May 28, 4:01 PM CDT, 28 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
401 PM CDT THU MAY 28 2015

LAZ001-002-282145-
BOSSIER LA-CADDO LA-
401 PM CDT THU MAY 28 2015

...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL BOSSIER AND
NORTHWESTERN CADDO PARISHES UNTIL 445 PM CDT...

AT 401 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER
BELCHER...OR 16 MILES NORTHWEST OF BOSSIER CITY...MOVING SOUTH AT 10
MPH.

WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
BOSSIER CITY...BLANCHARD...BENTON...BELCHER...GILLIAM...DIXIE...ALDEN
BRIDGE AND CAVETT.

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

LAT...LON 3285 9386 3282 9364 3257 9363 3258 9392
TIME...MOT...LOC 2101Z 013DEG 8KT 3273 9380

VII

Special weather statement, May 28, 4:14 PM CDT, 15 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
414 PM CDT THU MAY 28 2015

ARZ073-LAZ006-282200-
UNION AR-UNION LA-
414 PM CDT THU MAY 28 2015

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN UNION COUNTY IN
SOUTH CENTRAL ARKANSAS AND NORTHEASTERN UNION PARISHES UNTIL 500 PM
CDT...

AT 414 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER
LAPILE...OR NEAR HUTTIG...MOVING EAST AT 25 MPH.

WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
HUTTIG...STRONG...LAPILE...MARION...FELSENTHAL...NEW LONDON...
LITROE...CECIL...OAKLAND AND AURELLE.

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

LAT...LON 3302 9250 3319 9232 3314 9212 3312 9212
      3310 9214 3307 9213 3307 9211 3303 9211
      3303 9209 3301 9207 3298 9208 3297 9207
      3297 9208 3287 9208 3284 9206 3280 9206
TIME...MOT...LOC 2114Z 291DEG 24KT 3309 9228

VII

The office that day

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

Issued	Product	Office	Counties	Lasted
May 28, 11:40 AM CDT	Severe Thunderstorm Warning	SHV	Bienville, Claiborne, Lincoln, Webster	65 min
May 28, 1:29 PM CDT	Special Weather Statement	SHV	Webster	46 min
May 28, 3:49 PM CDT	Severe Thunderstorm Warning	SHV	Union	41 min
May 28, 4:01 PM CDT	Special Weather Statement	SHV	Caddo	44 min
May 28, 4:14 PM CDT	Special Weather Statement	SHV	Union	46 min
May 28, 4:59 PM CDT	Special Weather Statement	SHV	Red River	61 min
May 28, 6:11 PM CDT	Flash Flood Warning	SHV	Grant, Natchitoches, Red River, Winn	3 hr
May 28, 6:26 PM CDT	Special Weather Statement	SHV	Grant, Natchitoches	49 min
May 28, 6:46 PM CDT	Severe Thunderstorm Warning	SHV	Grant, LaSalle, Winn	59 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 2015 Every severe thunderstorm warning in 2015

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.