Alert archive / Louisiana / Flash Flood Warnings in 2009

Flash Flood Warning 85, NWS Shreveport, LA

October 13, 20096 parishes in Louisiana; Columbia County, Union County, Arkansas

NWS Shreveport, LA issued this flash flood warning at Oct 13, 2009, 3:23 PM CDT for 6 parishes in Louisiana; Columbia County, Union County, Arkansas. It was in force for 112 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: Oct 13, 2009, 3:23 PM CDT (20:23 UTC)
Expired: Oct 13, 2009, 5:15 PM CDT
In force: 112 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon
Flood severity: None

Counties Columbia County, AR, Union County, AR, Bienville Parish, LA, Claiborne Parish, LA, Jackson Parish, LA, Lincoln Parish, LA, Union Parish, LA, Webster Parish, LA

The radar

The Shreveport radar (KSHV), 143 km from the middle of the area, began a volume at 20:26 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
Oct 13, 3:30 PM CDT	FLASH FLOOD	Homer, LA	SEVERAL PARISH ROADS CLOSED
Oct 13, 3:35 PM CDT	FLASH FLOOD	El Dorado, AR	SOME COUNTY ROADS DUE TO FLOODING
Oct 13, 4:50 PM CDT	FLASH FLOOD	1 W Smackover, AR	HIGH WATER RESCUE UNDERWAY BY THE UNION COUNTY S/O FOR AN ELDERLY MAN TRAPPED IN HIS HOME ON CANOVA ROAD NEAR SMACKOVER CREEK.

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 flash flood warning; the first came 7 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 nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 8.4 hours before the alert went out and 134 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: 567 J/kg
Mixed-layer CIN: -44 J/kg
Mixed-layer LCL: 476 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 126 m²/s²
0-3 km storm-relative helicity: 157 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.6

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KSHV 132023
FFWSHV
ARC027-139-LAC013-027-049-061-111-119-132215-
/O.NEW.KSHV.FF.W.0085.091013T2023Z-091013T2215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
323 PM CDT TUE OCT 13 2009

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHERN JACKSON PARISH IN NORTH CENTRAL LOUISIANA...
  LINCOLN PARISH IN NORTH CENTRAL LOUISIANA...
  THIS INCLUDES THE CITIES OF...RUSTON...GRAMBLING...
  UNION PARISH IN NORTH CENTRAL LOUISIANA...
  NORTHERN BIENVILLE PARISH IN NORTHWEST LOUISIANA...
  CLAIBORNE PARISH IN NORTHWEST LOUISIANA...
  THIS INCLUDES THE CITY OF HOMER...
  EASTERN WEBSTER PARISH IN NORTHWEST LOUISIANA...
  UNION COUNTY IN SOUTH CENTRAL ARKANSAS...
  THIS INCLUDES THE CITIES OF...SMACKOVER...NORPHLET...JUNCTION
  CITY...HUTTIG...EL DORADO...
  EASTERN COLUMBIA COUNTY IN SOUTHWEST ARKANSAS...

* UNTIL 515 PM CDT

* AT 318 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED
  VERY HEAVY RAIN FROM THUNDERSTORMS OVER THE WARNED AREA.  THE 
  HEAVIEST RAINFALL WAS OCCURRING ALONG A LINE EXTENDING FROM 9
  MILES SOUTH OF STRONG TO GRAMBLING TO 22 MILES SOUTHWEST OF
  GIBSLAND...MOVING EAST AT 15 MPH.  DOPPLER RADAR INDICATED 
  RAINFALL RATES BETWEEN 1.5 AND 2 INCHES AN HOUR ASSOCIATED WITH 
  THESE STORMS.  AN ADDITIONAL 2 TO 4 INCHES OF RAIN COULD FALL 
  THIS AFTERNOON OVER AN ALREADY SOAKED GROUND.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  LAPILE AND FARMERVILLE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS 
SAFELY. MOVE TO HIGHER GROUND.  MOST FLOOD DEATHS OCCUR IN 
AUTOMOBILES. WHEN ENCOUNTERING FLOODED ROADS MAKE THE SMART 
CHOICE...TURN AROUND...DONT DROWN.

STAY TUNED FOR FURTHER UPDATES FROM YOUR NATIONAL WEATHER SERVICE IN 
SHREVEPORT.

&&

LAT...LON 3260 9222 3258 9241 3241 9241 3235 9235
      3237 9326 3304 9326 3304 9304 3339 9304
      3338 9256 3333 9251 3333 9245 3328 9242
      3330 9233 3327 9222 3321 9220 3322 9217
      3316 9209 3310 9212 3302 9206 3274 9204

$$

D. BUTTS

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 Oct 13, 11:18 AM CDT, 4 hours 5 minutes earlier.

Area forecast discussion, Oct 13, 11:18 AM CDT, 4 hours 5 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SHREVEPORT LA
1118 AM CDT TUE OCT 13 2009

.DISCUSSION...
HEAVY RAIN AND NUMEROUS FLASH FLOOD WARNINGS CONTINUING ACROSS
THE NORTHERN ONE THIRD OF THE CWA...BASICALLY IN THE FLASH
FLOOD WATCH AREA. THIS AREA WILL SHIFT SLOWLY NORTHEAST AS
SHORT WAVE RESPONSIBLE FOR ALL THE LIFT MOVES OUT OF THE AREA.
CURRENT FORECAST LOOKS OK FOR THE MOST PART BUT DID MAKE SOME
SIGNIFICANT QFP CHANGES. ALSO RAISED TODAYS HIGH TEMPS SOUTHERN
TWO THIRDS...AS THE WARM FRONT HAS ENTERED THE CWA. CONTINUING
100 PERCENT POPS NORTH BUT LOWERING TO 80 SOUTH. NO OTHER CHANGES
AT THIS TIME.

&&

.AVIATION...
A WARM FRONT STRETCHING ACROSS TXK/ELD WILL SERVE AS A FOCUS FOR
WIDESPREAD SHOWER ACTIVITY ACROSS THESE TWO LOCATIONS THROUGH 00Z.
THE FRONT IS FORECAST TO CONTINUE NORTHWARD TONIGHT WITH MVFR/IFR
CONDITIONS PREVAILING AREAWIDE...DUE TO LOW CEILINGS AND
VISIBILITIES...THROUGH MID-MORNING WEDNESDAY. OTHERWISE...WINDS WILL
REMAIN LIGHT AND OUT OF THE SOUTH THROUGH THE TERMINAL FORECAST
PERIOD. /05/

&&

.PRELIMINARY POINT TEMPS/POPS...
SHV  78  71  79  70  74 /  80  80  60  60  60
MLU  77  71  78  67  75 /  80  80  70  50  60
DEQ  65  61  73  61  64 / 100  80  40  70  60
TXK  68  63  74  65  67 / 100  80  50  70  60
ELD  72  64  74  64  69 / 100  80  60  60  60
TYR  76  69  83  69  70 / 100  80  50  60  60
GGG  77  69  81  70  72 /  90  80  50  60  60
LFK  85  74  85  71  76 /  80  70  60  40  60

&&

.SHV WATCHES/WARNINGS/ADVISORIES...
AR...FLASH FLOOD WATCH UNTIL 7 PM CDT THIS EVENING FOR THE FOLLOWING
     ZONES: ARZ050-051-059>061-070>073.

LA...FLASH FLOOD WATCH UNTIL 7 PM CDT THIS EVENING FOR THE FOLLOWING
     ZONES: LAZ001>006-012>014.

OK...FLASH FLOOD WATCH UNTIL 7 PM CDT THIS EVENING FOR THE FOLLOWING
     ZONES: OKZ077.

TX...FLASH FLOOD WATCH UNTIL 7 PM CDT THIS EVENING FOR THE FOLLOWING
     ZONES: TXZ096-097-108>112-124>126-136>138.

&&

14/05

Hazardous weather outlook, Oct 13, 11:55 AM CDT, 3 hours 28 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SHREVEPORT LA
1155 AM CDT TUE OCT 13 2009

ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-
TXZ096-097-108>112-124>126-136>138-149>153-165>167-141700-
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-
1155 AM CDT TUE OCT 13 2009

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...
A FLASH FLOOD WATCH HAS BEEN POSTED FOR THE REGION NORTH OF
INTERSTATE 20 THROUGH 700 PM THIS EVENING. SHOWERS AND
THUNDERSTORMS WILL BE QUITE NUMEROUS THROUGH THIS EVENING WITH THE
POTENTIAL FOR LOCALLY HEAVY RAINFALL. EXPECT WIDESPREAD TWO TO
THREE INCHES OF RAIN WITH ISOLATED TOTALS OF FOUR TO SIX INCHES
POSSIBLE THROUGH THIS EVENING...MAINLY ACROSS NORTHEAST
TEXAS...SOUTHWEST ARKANSAS AND EXTREME SOUTHEAST OKLAHOMA.
AREA CREEKS...BAYOUS AND RESERVOIRS REMAIN NEAR TO ABOVE BANK
FULL ACROSS THE REGION WITH SEVERAL RIVERS ALREADY IN FLOOD.
ADDITIONAL HEAVY RAINFALL TODAY WILL ONLY COMPOUND THE FLOOD
THREAT.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY...

HIGH RAIN CHANCES WILL CONTINUE THROUGH AT LEAST THURSDAY MORNING
ACROSS THE REGION. THERE WILL BE A CONDITIONAL THREAT FOR STRONG
TO SEVERE THUNDERSTORMS WEDNESDAY EVENING AND THROUGH THE
OVERNIGHT HOURS INTO THURSDAY. A SHORTWAVE WILL BE APPROACHING
THE REGION FROM THE NORTHWEST ALONG WITH A STRONG COLD FRONT.
STRONG TO SEVERE THUNDERSTORMS WILL BE POSSIBLE ALONG AND AHEAD OF
THE FRONTAL BOUNDARY IF WARM AIR SLIGHTLY ABOVE THE SURFACE CAN BE
OVERCOME. THIS WILL CONTINUE TO BE CLOSELY MONITORED THROUGH THE
DAY TODAY INTO WEDNESDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS AND EMERGENCY MANAGEMENT PERSONNEL SHOULD MONITOR RAINFALL
AMOUNTS IN THEIR LOCAL AREAS AND ONCE HEAVY RAIN DEVELOPS...RESPONDERS
MAY BE NEEDED TO HELP ASSIST WITH FLOODING CONCERNS ACROSS THEIR
COUNTY AND PARISH.

In the hours before

Local storm report, Oct 13, 2:38 PM CDT, 45 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
238 PM CDT TUE OCT 13 2009

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

0231 PM     FLASH FLOOD      MAUD                    33.33N 94.34W
10/13/2009                   BOWIE              TX   EMERGENCY MNGR

            ARKADELPHIA COMMUNITY CUT OFF DUE TO FLOODING ON CR 1102
            AND ROCK CREEK ROAD

&&

12

Special weather statement, Oct 13, 2:48 PM CDT, 35 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
248 PM CDT TUE OCT 13 2009

LAZ003>006-011>013-132045-
BIENVILLE-CLAIBORNE-JACKSON-LINCOLN-RED RIVER-UNION-WEBSTER-
248 PM CDT TUE OCT 13 2009

...SIGNIFICANT WEATHER ALERT...

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A SIGNIFICANT
WEATHER ALERT...EFFECTIVE UNTIL 345 PM CDT...FOR THE FOLLOWING
PARISHES...

IN NORTHWEST LOUISIANA...
     SOUTHERN WEBSTER...SOUTHERN CLAIBORNE...BIENVILLE AND NORTHERN
      RED RIVER...
IN NORTH CENTRAL LOUISIANA...
     UNION...LINCOLN AND NORTHWESTERN JACKSON...

INCLUDING THE FOLLOWING LOCATIONS...
     ARCADIA...BERNICE...FARMERVILLE...GIBSLAND...GRAMBLING...
     RINGGOLD AND RUSTON...

AT 243 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS ARE TRACKING
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM BERNICE TO 12 MILES
SOUTHWEST OF BERNICE TO 15 MILES SOUTHWEST OF RINGGOLD...MOVING
EAST AT 20 MPH.

WINDS 30 TO 40 MPH ARE EXPECTED WITH THESE STORMS. IN
ADDITION...HEAVY RAINFALL WILL LIKELY OCCUR WITH THESE STORMS.

STAY TUNED FOR FURTHER UPDATES FROM YOUR NATIONAL WEATHER SERVICE IN
SHREVEPORT.

D. BUTTS

Local storm report, Oct 13, 2:51 PM CDT, 32 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
251 PM CDT TUE OCT 13 2009

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

0245 PM     FLASH FLOOD      PITTSBURG               33.00N 94.97W
10/13/2009                   CAMP               TX   LAW ENFORCEMENT

            NUMEROUS ROADS ACROSS CAMP COUNTY CONTINUE TO BE
            IMPASSIBLE DUE TO FLOODING

&&

12

Local storm report, Oct 13, 2:55 PM CDT, 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
255 PM CDT TUE OCT 13 2009

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

0254 PM     FLASH FLOOD      GILMER                  32.73N 94.95W
10/13/2009                   UPSHUR             TX   LAW ENFORCEMENT

            NUMEROUS ROADS ACROSS UPSHUR COUNTY CONTINUE TO BE CLOSED
            DUE TO FLOODING

&&

12

Local storm report, Oct 13, 3:12 PM CDT, 11 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
312 PM CDT TUE OCT 13 2009

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

0310 PM     FLASH FLOOD      SPRINGHILL              33.00N 93.46W
10/13/2009                   WEBSTER            LA   CO-OP OBSERVER

            HWY 371 IN FRONT OF THE MCDONDALS AND OTHER LOW LYING
            AREAS IN TOWN ARE FLOODED

&&

12

Local storm report, Oct 13, 3:18 PM CDT, 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
318 PM CDT TUE OCT 13 2009

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

0315 PM     FLASH FLOOD      WALDO                   33.35N 93.30W
10/13/2009                   COLUMBIA           AR   LAW ENFORCEMENT

            CR 69...58...AND 60 CLOSED DUE TO FLOODING

&&

12

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 12, 8:17 PM CDT	River Flood Warning	SHV	Claiborne, Lincoln, Union	4 days
Oct 12, 10:44 PM CDT	Flash Flood Watch	SHV	Bienville, Bossier, Caddo, Claiborne, De Soto, Jackson and 5 more	29 hr
Oct 13, 10:33 AM CDT	River Flood Warning	SHV	Grant, Natchitoches, Red River	29 days
Oct 13, 11:51 AM CDT	River Flood Warning	SHV	Caddo	27 days
Oct 13, 12:19 PM CDT	River Flood Warning	SHV	Bossier	4 days
Oct 13, 1:26 PM CDT	Flash Flood Warning	SHV	Bossier, Caddo, Webster	4 hr
Oct 13, 2:21 PM CDT	River Flood Warning	SHV	Lincoln, Ouachita, Union	8 days
Oct 13, 3:39 PM CDT	Areal Flood Advisory	SHV	Bienville, Bossier, Caddo, De Soto, Jackson, Natchitoches and 3 more	111 min
Oct 13, 4:12 PM CDT	Flash Flood Warning	SHV	Ouachita	2 hr
Oct 13, 4:52 PM CDT	Flash Flood Warning	SHV	Bienville, Bossier, Caddo, De Soto, Red River, Webster	38 min
Oct 13, 5:24 PM CDT	Flash Flood Warning	SHV	Bienville, Claiborne, Jackson, Lincoln, Union, Webster	4 hr
Oct 13, 5:31 PM CDT	Flash Flood Warning	SHV	Bienville, Bossier, Caddo, De Soto, Natchitoches, Red River and 2 more	3 hr
Oct 13, 6:04 PM CDT	Flash Flood Warning	SHV	Caldwell, Ouachita	4 hr
Oct 13, 8:46 AM CDT	Areal Flood Advisory	SHV	Columbia, Hempstead, Lafayette, Little River, Miller, Nevada and 1 more	3 hr
Oct 13, 8:52 AM CDT	Areal Flood Advisory	SHV	Little River	3 hr
Oct 13, 9:41 AM CDT	Flash Flood Warning	SHV	Hempstead, Lafayette, Little River, Miller	7 hr
Oct 13, 10:08 AM CDT	Flash Flood Warning	SHV	Little River	3 hr
Oct 13, 10:33 AM CDT	River Flood Warning	SHV	Little River	15 hr
Oct 13, 10:34 AM CDT	Flash Flood Warning	SHV	Columbia, Hempstead, Howard, Lafayette, Little River, Nevada and 1 more	6 hr
Oct 13, 11:56 AM CDT	River Flood Warning	SHV	Howard, Little River, Sevier	43 hr
Oct 13, 12:51 PM CDT	Flash Flood Warning	SHV	Little River	3 hr
Oct 13, 3:56 PM CDT	Flash Flood Warning	SHV	Little River	2 hr
Oct 13, 4:37 PM CDT	Flash Flood Warning	SHV	Columbia, Hempstead, Howard, Lafayette, Little River, Miller and 2 more	3 hr
Oct 13, 6:13 PM CDT	Areal Flood Advisory	SHV	Little River	2 hr

Nearby

Flash Flood Warnings in Louisiana, 2009 Flash Flood Warnings in Arkansas, 2009 Every flash flood warning 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.