Alert archive / Louisiana / Flash Flood Warnings in 2003

Flash Flood Warning 9, NWS Shreveport, LA

May 14, 2003Jackson Parish, Louisiana

NWS Shreveport, LA issued this flash flood warning at May 14, 2003, 9:08 PM CDT for Jackson Parish, Louisiana. It was in force for 4 hr. 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 14, 2003, 9:08 PM CDT (02:08 UTC)
Expired: May 15, 2003, 1:15 AM CDT
In force: 4 hr
Issued by: NWS Shreveport, LA
Area: Counties, with a storm outline in the text

County Jackson Parish, LA

The radar

The Shreveport radar (KSHV), 120 km from the middle of the area, began a volume at 02:07 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 flash flood 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 (KSHV), launched 00:00Z, 2.1 hours before the alert went out and 112 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: 2404 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 1182 m above ground
0-6 km bulk shear: 65 kt
0-1 km storm-relative helicity: 114 m²/s²
0-3 km storm-relative helicity: 250 m²/s²
Significant tornado parameter: 2.2
Supercell composite: 10.6

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KSHV 150214
FFWSHV
LAC049-150615-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
908 PM CDT WED MAY 14 2003

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  JACKSON PARISH IN NORTH CENTRAL LOUISIANA

* UNTIL 115 AM CDT

* AT 908 PM CDT...THE SHREVEPORT WEATHER SERVICE DOPPLER RADAR   
INDICATED VERY HEAVY RAIN WHICH EXPANDED OVER MUCH OF JACKSON 
PARISH.  ADDITIONAL REDEVELOPMENT CONTINUE FARTHER WEST INTO 
BIENVILLE PARISH...WHICH WILL MOVE REPEATEDLY OVER THE SAME AREAS 
DURING THE NEXT FEW HOURS.  NUMEROUS TREES HAVE BEEN REPORTED DOWN 
THROUGHOUT JACKSON PARISH IN THE AFTERMATH OF A SEVERE 
THUNDERSTORM...WHICH ALSO HAS SATURATED THE GROUNDS FROM VERY HEAVY 
RAINFALL DURING THE LAST COUPLE OF HOURS.  THIS WILL RESULT IN WATER 
BEING BACKLOGGED ACROSS PORTIONS OF THE PARISH...RESULTING IN FLASH 
FLOODING.  DOPPLER RADAR INDICATED TWO TO THREE INCHES OF RAIN HAS 
FALLEN DURING THE LAST FEW HOURS...WITH HOURLY RAINFALL RATES OF AN 
INCH PER HOUR POSSIBLE WITH THESE STORMS AS THEY MOVE SOUTHEAST NEAR 
35 MPH.

THIS STORM WILL CAUSE FLASH FLOODING OF SMALL CREEKS AND 
STREAMS...URBAN HIGHWAYS AND UNDERPASSES...ALONG WITH COUNTRY 
ROADS...AND LOW FARMLAND.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.

REPEATING...THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD
WARNING FOR...
  JACKSON PARISH IN NORTH CENTRAL LOUISIANA
UNTIL 115 AM CDT.

LAT...LON 3246 9246 3218 9237 3219 9279 3237 9277

$$

What forecasters said that day

The local office's own words before this flash flood 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 flash flood warning went out at May 14, 3:50 PM CDT, 5 hours 18 minutes earlier.

Area forecast discussion, May 14, 3:50 PM CDT, 5 hours 18 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SHREVEPORT LA
350 PM CDT WED MAY 14 2003

NEXT ROUND OF SEVERE WEATHER OVER THE NORTHERN TIER OF THE CWA RIGHT
NOW. THIS HAS PROMPTED SPC TO ISSUE TORNADO WATCH FOR MUCH OF AREA
ALONG AND NORTH OF I 20 TIL 8 PM. THIS AREA MAY SLOWLY SAG SOUTHWARD
AS STORMS RACE EASTWARD. AM TENDING TO THINK A LITTLE THAT THERE
WON/T BE ANOTHER ROUND OF SEVERE DURING THE DAY TOMORROW...UNLESS
TONIGHTS IS LINGERING DOWN SOUTH IN THE MORNING. BUT STORMS MAY GET
GOING TOMORROW NIGHT...AND CHANCE OF STORMS WILL PERSIST INTO
SATURDAY AS UPPER LEVEL LOW COMES DRIFTING THIS WAY.

UPPER RIDGE LOOKS TO ASSERT ITSELF LATTER PART OF WEEKEND AND INTO
NEXT WEEK. NOT THAT WE WILL GET ANY LESS HUMID...BUT EXPECTING
CAPPING INVERSION TO KEEP THINGS QUIET FIRST HALF OF NEXT WEEK. 17

PRELIMS...

SHV 69/89/72/87/71 4222
MLU 69/90/70/89/71 4222
TXK 68/88/71/86/70 6255
TYR 71/89/72/87/71 4222
LFK 70/90/73/89/73 2222

.SHV...NONE.

Hazardous weather outlook, May 14, 12:00 PM CDT, 9 hours 8 minutes before

ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-TXZ096-
097-108>112-124>126-136>138-149>153-165>167-151100-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SHREVEPORT LA
1200 PM CDT WED MAY 14 2003

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

.DAY ONE...TODAY AND TONIGHT...
THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND
THROUGHOUT THE NIGHT ACROSS THE FOUR STATES REGION. HOWEVER...THE
NORTHERN HALF OF THE AREA...GENERALLY ALONG AND NORTH OF INTERSTATE
20...IS THE PRIMARY AREA OF CONCERN. A WEAK WARM FRONT STRETCHES
FROM THE RED RIVER OF MCCURTAIN COUNTY OKLAHOMA...THROUGH THE
VICINITY OF EL DORADO ARKANSAS. THIS FRONTAL BOUNDARY WILL SERVE AS
A FOCUS FOR THUNDERSTORM DEVELOPMENT...WITH STORMS EXPECTED TO MOVE
EAST SOUTHEASTWARD AFTER FORMING. VERY LARGE HAIL IS THE PRIMARY
THREAT WITH SEVERE THUNDERSTORMS TODAY AND TONIGHT...WITH STRONG
DAMAGING WINDS ALSO QUITE POSSIBLE. ISOLATED TORNADOES CANNOT BE
RULED OUT EITHER...ESPECIALLY JUST TO THE NORTH OF THE WARM FRONT
WHERE LOW LEVEL VERTICAL WIND SHEAR WILL BE GREATEST.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY...
THERE IS A CONTINUED SLIGHT RISK OF SEVERE THUNDERSTORMS THURSDAY
THROUGH SATURDAY.

.SPOTTER CALL TO ACTION STATEMENT...
ACTIVATION OF EMERGENCY MANAGERS...SKYWARN NETWORKS...AND STORM
SPOTTERS MAY BE NEEDED TODAY OR TONIGHT.

In the hours before

Special weather statement, May 14, 4:06 PM CDT, 5 hours 2 minutes before

ARZ050-051-059>061-070>073-LAZ001>006-012>014-OKZ077-TXZ096-097-
108>112-124>126-138-150100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
406 PM CDT WED MAY 14 2003

...TORNADO WATCH CONTINUES IN EFFECT FOR THE NORTH HALF OF THE FOUR
STATE AREA...

A TORNADO WATCH CONTINUES IN EFFECT UNTIL 8 PM THIS EVENING...FOR
THAT PART OF THE FOUR STATE AREA GENERALLY NORTH OF INTERSTATE 20.
THIS AREA INCLUDES ALL OF SOUTHWEST ARKANSAS...MCCURTAIN COUNTY
OKLAHOMA. IT ALSO INCLUDES THE CITIES OF CLARKSVILLE...MOUNT
PLEASANT...GILMER...AND MARSHALL IN TEXAS...AND SHREVEPORT AND
BOSSIER CITY...MINDEN...HOMER...RUSTON...AND MONROE IN LOUISIANA.

A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOS IN AND
NEAR THE WATCH AREA. RESIDENTS OF THIS AREA SHOULD STAY ALERT FOR
RAPIDLY CHANGING WEATHER CONDITIONS.

03

Local storm report, May 14, 5:14 PM CDT, 3 hours 54 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT, LA
514 PM CDT WED MAY 14 2003

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1150 AM    BROKEN BOW                OK   .88 INCH HAIL
05/14/03   MCCURTAIN                      REPORTED BY FIRE
                                          DEPARTMENT.

0325 PM    NASHVILLE                 AR   .75 INCH HAIL
05/14/03   HOWARD                         REPORTED BY LAW
                                          ENFORCEMENT.

0345 PM    WASHINGTON                AR   1.75 INCH HAIL
05/14/03   HEMPSTEAD                      REPORTED BY GENERAL
                                          PUBLIC.

0400 PM    HORATIO                   AR   1.00 INCH HAIL
05/14/03   SEVIER                         REPORTED BY GENERAL
                                          PUBLIC.

0410 PM    LOCKESBURG                AR   1.00 INCH HAIL
05/14/03   SEVIER                         REPORTED BY CO-OP
                                          OBSERVER.

0430 PM    BROKEN BOW                OK   1.00 INCH HAIL
05/14/03   MCCURTAIN                      REPORTED BY FIRE
                                          DEPARTMENT.

0455 PM    FOREMAN                   AR   1.75 INCH HAIL
05/14/03   LITTLE RIVER                   REPORTED BY SPOTTERS.

20

Local storm report, May 14, 5:47 PM CDT, 3 hours 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT, LA
547 PM CDT WED MAY 14 2003

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0520 PM    5 W LEWISVILLE            AR   .75 INCH HAIL
05/14/03   LAFAYETTE                      REPORTED BY LAW
                                          ENFORCEMENT.

0522 PM    5 W LEWISVILLE            AR   1.00 INCH HAIL
05/14/03   LAFAYETTE                      NEAR SPIRIT LAKE. REPORTED
                                          BY STATE TROOPERS.

0522 PM    5 W LEWISVILLE            AR   WIND DAMAGE
05/14/03   LAFAYETTE                      POWER LINES DOWN NEAR
                                          SPIRIT LAKE. REPORTED BY
                                          STATE TROOPERS.

0530 PM    3 W LEWISVILLE            AR   WIND DAMAGE
05/14/03   LAFAYETTE                      TREES DOWN N AND S OF HWY
                                          82. REPORTED BY STATE
                                          TROOPERS.

20

Special weather statement, May 14, 6:23 PM CDT, 2 hours 45 minutes before

ARZ050-051-059>061-070>073-LAZ001>006-012>014-OKZ077-TXZ096-097-
108>112-124>126-138-150000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
623 PM CDT WED MAY 14 2003

...TORNADO WATCH HAS BEEN CANCELED FOR NORTHEAST TEXAS...
MCCURTAIN COUNTY IN SOUTHEAST OKLAHOMA...SOUTHWEST ARKANSAS
AND NORTHWEST LOUISIANA...

A SEVERE THUNDERSTORM WATCH IS NOW IN EFFECT UNTIL MIDNIGHT...
FOR ALL OF NORTH LOUISIANA AND PORTIONS OF SOUTHERN ARKANSAS...
GENERALLY EAST OF A LINE FROM NEAR MANSFIELD AND SHREVEPORT
LOUISIANA TO NEAR LEWISVILLE AND HOPE ARKANSAS.

WHILE THE TORNADO THREAT HAS DIMINISHED THIS EVENING...STRONG
AND DAMAGING WIND GUSTS...ALONG WITH LARGE HAIL ARE STILL POSSIBLE
IN AND NEAR THE WATCH AREA.

STAY TUNED TO NOAA WEATHER RADIO...YOUR LOCAL RADIO STATION OR
CABLE SUBSCRIBER FOR FURTHER WEATHER UPDATES.

13

Local storm report, May 14, 7:27 PM CDT, 1 hour 41 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT, LA
727 PM CDT WED MAY 14 2003

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0655 PM    ATHENS                    LA   2.50 INCH HAIL
05/14/03   CLAIBORNE                      REPORTED BY GENERAL
                                          PUBLIC.

20

Local storm report, May 14, 9:03 PM CDT, 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT, LA
903 PM CDT WED MAY 14 2003

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0710 PM    RUSTON                    LA   FLASH FLOODS
05/14/03   LINCOLN                        URBAN FLOODING IN DOWNTOWN
                                          RUSTON. WATER GOING INTO
                                          SOME CARS. REPORTED BY
                                          GENERAL PUBLIC.

0725 PM    ARCADIA                   LA   .75 INCH HAIL
05/14/03   BIENVILLE                      REPORTED BY LAW
                                          ENFORCEMENT.

0725 PM    ARCADIA                   LA   WIND DAMAGE
05/14/03   BIENVILLE                      TREES DOWN. REPORTED BY
                                          SPOTTERS.

0750 PM    RUSTON                    LA   WIND DAMAGE
05/14/03   LINCOLN                        3 WINDSHIELDS BLOWN OUT.
                                          REPORTED BY BROADCAST
                                          MEDIA.

0810 PM    5 W IDABEL                OK   WIND DAMAGE
05/14/03   MCCURTAIN                      TREES DOWN. REPORTED BY
                                          LAW ENFORCEMENT.

0815 PM    MONROE                    LA   WIND DAMAGE
05/14/03   OUACHITA                       POWER LINES DOWN ON
                                          GARRETT ROAD. REPORTED BY
                                          LAW ENFORCEMENT.

0820 PM    MONROE                    LA   FLASH FLOODS
05/14/03   OUACHITA                       NUMEROUS RURAL ROADS UNDER
                                          WATER. REPORTED BY LAW
                                          ENFORCEMENT.

20

The office that day

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

Issued	Product	Office	Counties	Lasted
May 14, 7:00 PM CDT	Severe Thunderstorm Warning	SHV	Lincoln	60 min
May 14, 7:06 PM CDT	Severe Thunderstorm Warning	SHV	Bienville	39 min
May 14, 7:34 PM CDT	Severe Thunderstorm Warning	SHV	Jackson	56 min
May 14, 7:58 PM CDT	Severe Thunderstorm Warning	SHV	Ouachita	62 min
May 14, 8:12 PM CDT	Severe Thunderstorm Warning	SHV	Caldwell, Winn	63 min
May 14, 8:14 PM CDT	Flash Flood Warning	SHV	Ouachita	3 hr
May 14, 10:08 PM CDT	Tornado Warning	SHV	Caddo	52 min
May 14, 10:40 PM CDT	Severe Thunderstorm Warning	SHV	Jackson, Lincoln	65 min
May 14, 10:51 PM CDT	Severe Thunderstorm Warning	SHV	Bossier	54 min
May 14, 10:54 PM CDT	Severe Thunderstorm Warning	SHV	Ouachita	51 min
May 14, 10:56 PM CDT	Severe Thunderstorm Warning	SHV	Caddo	64 min
May 14, 11:21 PM CDT	Severe Thunderstorm Warning	SHV	Webster	54 min
May 14, 11:31 PM CDT	Flash Flood Warning	SHV	Ouachita	6 hr
May 15, 1:05 AM CDT	Severe Thunderstorm Warning	SHV	Winn	55 min
May 15, 4:18 AM CDT	Flash Flood Warning	SHV	Webster	4 hr

Nearby

Flash Flood Warnings in Louisiana, 2003 Every flash flood warning in 2003

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.