Alert archive / Louisiana / Flash Flood Warnings in 2009
Flash Flood Warning 114, NWS Shreveport, LA
NWS Shreveport, LA issued this flash flood warning at Oct 30, 2009, 3:45 AM CDT for Claiborne Parish, Webster Parish, Louisiana; Columbia County, Union County, Arkansas. 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 counties it named.
The facts
- Issued
- Oct 30, 2009, 3:45 AM CDT (08:45 UTC)
- Expired
- Oct 30, 2009, 7:45 AM CDT
- In force
- 4 hr
- Issued by
- NWS Shreveport, LA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Columbia County, AR, Union County, AR, Claiborne Parish, LA, Webster Parish, LA
The radar
The Shreveport radar (KSHV), 95 km from the middle of the area, began a volume at 08:47 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.
The nearest sounding before it
Shreveport, LA (KSHV), launched 00:00Z, 8.8 hours before the alert went out and 87 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.
- Mixed-layer CAPE
- 1620 J/kg
- Mixed-layer CIN
- -34 J/kg
- Mixed-layer LCL
- 510 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 278 m²/s²
- 0-3 km storm-relative helicity
- 300 m²/s²
- Significant tornado parameter
- 2.2
- Supercell composite
- 14.3
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 29, 11:49 PM CDT, 3 hours 56 minutes earlier.
Area forecast discussion, Oct 29, 11:49 PM CDT, 3 hours 56 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SHREVEPORT LA
1149 PM CDT THU OCT 29 2009
.DISCUSSION...
ONE FINAL EVENING UPDATE TO REMOVE SEVERE AND HEAVY RAIN WORDING...
AS SHOWERS STILL WIDESPREAD BEHIND FRONT...BUT LITTLE IN WAY OF THUNDER.
EASTERN SECTIONS OF CWA STILL SUBJECT TO HEAVY RAIN...AND POSSIBLY
STRONG CONVECTIVE WIND GUSTS./VII/
&&
.PRELIMINARY POINT TEMPS/POPS...
SHV 58 60 47 69 47 / 80 80 40 10 10
MLU 64 65 48 65 47 / 100 100 60 30 10
DEQ 57 58 42 64 43 / 40 60 20 10 10
TXK 57 60 45 64 48 / 60 80 40 10 10
ELD 58 60 45 64 43 / 80 80 40 10 10
TYR 55 58 45 68 49 / 60 60 20 10 10
GGG 57 59 44 68 45 / 60 80 40 10 10
LFK 59 63 45 71 46 / 80 80 40 10 10
&&
.SHV WATCHES/WARNINGS/ADVISORIES...
AR...FLASH FLOOD WATCH UNTIL 7 AM CDT FRIDAY FOR THE FOLLOWING ZONES:
ARZ050-051-059>061-070>073.
LA...FLASH FLOOD WATCH UNTIL 7 AM CDT FRIDAY FOR THE FOLLOWING ZONES:
LAZ001>006-010>014-017>022.
OK...NONE.
TX...FLASH FLOOD WATCH UNTIL 7 AM CDT FRIDAY FOR THE FOLLOWING ZONES:
TXZ097-112-126-138-150>153-165>167.
&&Hazardous weather outlook, Oct 29, 11:56 AM CDT, 15 hours 49 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SHREVEPORT LA 1156 AM CDT THU OCT 29 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>167-301700- 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- 1156 AM CDT THU OCT 29 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... AN UPPER LEVEL DISTURBANCE...COMBINED WITH A SLOW MOVING SURFACE COLD FRONT AND RICH LOW LEVEL MOISTURE...WILL PROVIDE FOR WIDESPREAD SHOWERS AND THUNDERSTORMS TODAY AND TONIGHT. SOME OF THESE STORMS WILL BE CAPABLE OF PRODUCING HEAVY RAINFALL...DAMAGING WINDS...AND ISOLATED TORNADOES. FLOODING WILL BE A SIGNIFICANT CONCERN WITH RAINFALL TOTALS AVERAGING AROUND 3 TO 6 INCHES AREAWIDE...INCLUDING ISOLATED AMOUNTS OF UP TO 7 INCHES POSSIBLE THROUGH FRIDAY. THE MOST LIKELY LOCATING FOR THE HIGHEST RAINGALL TOTALS WIL BE ACROSS NORTHWEST LOUISIANA. ALTHOUGH THERE WILL BE A POTENTIAL FOR BOTH SEVERE WEATHER AND FLOODING THIS AFTERNOON AND OVERNIGHT...THE MAIN TORNADIC THREAT WITH BE WITH THE PREFRONTAL STORMS THIS AFTERNOON...ESPECIALLY ACROSS NORTHEAST TEXAS AND SOUTHEAST OKLAHOMA...IN ASSOCIATION WITH STORMS THAT ARE CURRENTLY STILL DEVELOPING. THE MAIN THREAT FOR SIGNIFICANT FLOODING WILL BE TONIGHT...AS WELL AS POSSIBLE STRONG TO DAMAGING STRAIGHT LINE WINDS ASSOCIATED WITH A SLOW MOVING SQUALL LINE ENTERING NORTHEAST TEXAS AND SOUTHEAST OKLAHOMA DURING THE EVENING FROM THE WEST. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY... HEAVY RAIN WILL LINGER INTO MUCH OF THE DAY FRIDAY...WITH A CONTINUED FLOODING THREAT. .SPOTTER INFORMATION STATEMENT... ACTIVATION OF STORM SPOTTERS WILL LIKELY BE REQUIRED THIS AFTERNOON AND EVENING. LOCAL FLOODING ALSO POSSIBLE THIS AFTERNOON...BECOMING MORE LIKELY AREAWIDE TONIGHT AND FRIDAY. EMERGENCY MANAGERS NEED TO PREPARE FOR POSSIBLE SIGNIFICANT FLOODING. VII
In the hours before
Local storm report, Oct 30, 1:18 AM CDT, 2 hours 27 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
118 AM CDT FRI OCT 30 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0115 AM FLASH FLOOD BOSSIER CITY 32.52N 93.66W
10/30/2009 BOSSIER LA LAW ENFORCEMENT
NUMEROUS ROADS REMAIN UNDER WATER AND CLOSED. SOME WATER
IN HOMES ACROSS THE PARISH AS WELL.
0115 AM FLASH FLOOD SHREVEPORT 32.47N 93.80W
10/30/2009 CADDO LA LAW ENFORCEMENT
ROADS UNDER WATER AND CLOSED THROUGHOUT THE ENTIRE
PARISH. SOME WATER IN HOMES ACROSS THE SOUTHERN PORTION
OF THE PARISH.
0115 AM FLASH FLOOD 10 NE BRADLEY 33.20N 93.53W
10/30/2009 LAFAYETTE AR LAW ENFORCEMENT
HWY 53 CLOSED NEAR LAKE ERLING DUE TO HIGH WATER.
&&
MBERRYLocal storm report, Oct 30, 1:38 AM CDT, 2 hours 7 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
138 AM CDT FRI OCT 30 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0135 AM FLASH FLOOD BIENVILLE 32.36N 92.98W
10/30/2009 BIENVILLE LA LAW ENFORCEMENT
SEVERAL ROADS FLOODED THROUGHOUT THE PARISH.
&&
15Local storm report, Oct 30, 1:42 AM CDT, 2 hours 3 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
142 AM CDT FRI OCT 30 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0142 AM FLASH FLOOD WINNFIELD 31.92N 92.64W
10/30/2009 WINN LA LAW ENFORCEMENT
HIGH WATER REPORTED ON HWY 167 NEAR THE AIRPORT.
0142 AM FLASH FLOOD NATCHEZ 31.67N 93.05W
10/30/2009 NATCHITOCHES LA LAW ENFORCEMENT
HIGH WATER AND ROAD CLOSURES IN AND AROUND THE NATCHEZ
COMMUNITY
&&
MBERRYLocal storm report, Oct 30, 1:43 AM CDT, 2 hours 2 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
143 AM CDT FRI OCT 30 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0135 AM FLASH FLOOD 3 NW HODGE 32.30N 92.77W
10/30/2009 JACKSON LA LAW ENFORCEMENT
HIGH WATER OVER BEAR CREEK ROAD NORTHWEST OF HODGE.
&&
15Local storm report, Oct 30, 1:53 AM CDT, 1 hour 52 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
153 AM CDT FRI OCT 30 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0150 AM FLASH FLOOD HOMER 32.79N 93.06W
10/30/2009 CLAIBORNE LA LAW ENFORCEMENT
SEVERAL HOMES HAVE BEEN EVACUATED ON CARTER DRIVE IN
HOMER DUE TO FLOODING. NUMEROUS ROADS ARE FLOODED ACROSS
THE PARISH.
&&
15Local storm report, Oct 30, 2:30 AM CDT, 1 hour 15 minutes before
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</html>The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 29, 8:36 PM CDT | Flash Flood Warning | SHV | Angelina, Nacogdoches, Sabine, San Augustine | 4 hr |
| Oct 29, 9:02 PM CDT | Flash Flood Warning | SHV | Harrison, Panola, Shelby | 4 hr |
| Oct 29, 9:23 PM CDT | River Flood Warning | SHV | Angelina, Cherokee, Nacogdoches | 5 days |
| Oct 30, 12:31 AM CDT | Flash Flood Warning | SHV | Angelina, Nacogdoches, San Augustine | 4 hr |
| Oct 30, 1:00 AM CDT | Flash Flood Warning | SHV | Harrison, Panola, Shelby | 4 hr |
| Oct 30, 4:32 AM CDT | Areal Flood Warning | SHV | Angelina, Nacogdoches, San Augustine | 4 hr |
| Oct 30, 4:48 AM CDT | Areal Flood Warning | SHV | Harrison, Panola, Shelby | 4 hr |
| Oct 30, 5:51 AM CDT | River Flood Warning | SHV | Sabine, San Augustine | 3 hr |
| Oct 30, 12:09 PM CDT | River Flood Warning | SHV | Sabine, San Augustine | 22 hr |
| Oct 29, 7:13 PM CDT | Tornado Warning | SHV | Bossier, Webster | 32 min |
| Oct 29, 7:49 PM CDT | Flash Flood Warning | SHV | Bossier, Claiborne, Webster | 8 hr |
| Oct 29, 9:12 PM CDT | River Flood Warning | SHV | Bossier | 4 days |
| Oct 29, 9:13 PM CDT | Flash Flood Warning | SHV | Bossier, Caddo, De Soto | 4 hr |
| Oct 29, 9:29 PM CDT | Severe Thunderstorm Warning | SHV | Claiborne, Union | 46 min |
| Oct 29, 10:21 PM CDT | Flash Flood Warning | SHV | Bienville, Claiborne, Lincoln, Red River, Union | 4 hr |
| Oct 30, 12:55 AM CDT | Flash Flood Warning | SHV | Bossier, Caddo, De Soto | 4 hr |
| Oct 30, 1:30 AM CDT | Flash Flood Warning | SHV | Grant, Jackson, Natchitoches, Ouachita, Winn | 7 hr |
| Oct 30, 2:13 AM CDT | Flash Flood Warning | SHV | Bienville, Lincoln, Red River, Union | 4 hr |
| Oct 30, 3:54 AM CDT | River Flood Warning | SHV | Caddo, De Soto | 14 days |
| Oct 30, 4:41 AM CDT | Areal Flood Warning | SHV | Bossier, Caddo, De Soto | 4 hr |
| Oct 30, 6:15 AM CDT | Areal Flood Warning | SHV | Bienville, Claiborne, Webster | 60 min |
| Oct 30, 6:29 AM CDT | Flash Flood Warning | SHV | Bienville, Lincoln, Red River, Union | 3 hr |
| Oct 30, 7:43 AM CDT | Areal Flood Warning | SHV | Claiborne, Webster | 2 hr |
| Oct 30, 8:31 AM CDT | Areal Flood Warning | SHV | Bienville, Caldwell, Grant, Jackson, LaSalle, Lincoln and 6 more | 3 hr |
| Oct 30, 9:55 AM CDT | River Flood Warning | SHV | Bossier, Caddo, Red River | 23 hr |
| Oct 30, 11:14 AM CDT | River Flood Warning | SHV | Caldwell, Ouachita | 31 days |
| Oct 30, 11:38 AM CDT | River Flood Warning | SHV | Claiborne, Lincoln, Union | 35 hr |
| Oct 29, 8:09 PM CDT | Tornado Warning | SHV | Columbia, Union | 36 min |
Nearby
Flash Flood Warnings in Louisiana, 2009Flash Flood Warnings in Arkansas, 2009Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.