Alert archive / Louisiana / Flash Flood Warnings in 2009
Flash Flood Warning 68, NWS Shreveport, LA
NWS Shreveport, LA issued this flash flood warning at Sep 15, 2009, 3:02 AM CDT for Ouachita Parish, Louisiana. It was in force for 3 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
- Sep 15, 2009, 3:02 AM CDT (08:02 UTC)
- Expired
- Sep 15, 2009, 6:00 AM CDT
- In force
- 3 hr
- Issued by
- NWS Shreveport, LA
- Area
- Storm-based polygon
- Flood severity
- None
County Ouachita Parish, LA
The radar
The Shreveport radar (KSHV), 158 km from the middle of the area, began a volume at 08:02 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
Jackson, MS (KJAN), launched 00:00Z, 8.0 hours before the alert went out and 196 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
- 2151 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 907 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 66 m²/s²
- 0-3 km storm-relative helicity
- 118 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 4.2
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 Sep 14, 8:29 PM CDT, 6 hours 33 minutes earlier.
Area forecast discussion, Sep 14, 8:29 PM CDT, 6 hours 33 minutes before
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</html>Hazardous weather outlook, Sep 14, 1:24 PM CDT, 13 hours 38 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SHREVEPORT LA 124 PM CDT MON SEP 14 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>167-151200- 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- 124 PM CDT MON SEP 14 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... RAINFALL WILL BE LOCALLY HEAVY AT TIMES ACROSS NORTHEAST TEXAS TODAY AND TONIGHT AND AS SHOWERS CONTINUE TO DEVELOP AND TRAIN OVER THE SAME AREAS. EXPECT ADDITIONAL AMOUNTS OF ONE TO THREE INCHES OVER SATURATED SOILS...WHICH WILL PRODUCE WATER RUNOFF AND FLOODING. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY... SCATTERED TO NUMEROUS SHOWERS AND ISOLATED THUNDERSTORMS WILL CONTINUE THROUGH THE LAST HALF OF THE WORK WEEK WITH SMALLER RAIN CHANCES INTO THE WEEKEND. THE POSSIBILITY FOR HEAVY RAINFALL AND POTENTIAL FOR FLOODING WILL CARRY INTO THURSDAY. .SPOTTER INFORMATION STATEMENT... ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS...AND EMERGENCY MANAGEMENT PERSONNEL MAY BE NEEDED TODAY AND TONIGHT.
The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 14, 9:23 PM CDT | Areal Flood Advisory | SHV | Camp, Gregg, Morris, Titus, Upshur | 52 min |
| Sep 14, 10:23 PM CDT | Areal Flood Advisory | SHV | Camp, Franklin, Gregg, Morris, Smith, Titus and 2 more | 52 min |
| Sep 15, 8:25 AM CDT | Flash Flood Warning | SHV | Bowie | 3 hr |
| Sep 15, 9:59 AM CDT | River Flood Warning | SHV | Cass, Marion | 8 days |
| Sep 15, 10:00 AM CDT | River Flood Warning | SHV | Gregg, Harrison, Marion, Upshur | 7 days |
| Sep 15, 10:02 AM CDT | River Flood Warning | SHV | Franklin, Morris, Red River, Titus | 5 days |
| Sep 15, 1:47 PM CDT | River Flood Warning | SHV | Smith, Wood | 5 days |
| Sep 14, 7:20 PM CDT | Flash Flood Warning | SHV | Ouachita | 3 hr |
| Sep 14, 8:09 PM CDT | Areal Flood Advisory | SHV | Bienville, De Soto, Grant, Jackson, Lincoln, Natchitoches and 4 more | 111 min |
| Sep 14, 11:22 PM CDT | Areal Flood Advisory | SHV | Jackson, Lincoln, Ouachita, Union | 53 min |
| Sep 15, 1:47 AM CDT | Areal Flood Advisory | SHV | Ouachita, Union | 3 hr |
| Sep 15, 4:47 AM CDT | Areal Flood Advisory | SHV | Union | 3 hr |
| Sep 15, 7:46 AM CDT | Areal Flood Advisory | SHV | Claiborne, Union | 3 hr |
| Sep 15, 10:01 AM CDT | River Flood Warning | SHV | Webster | 14 days |
| Sep 15, 11:15 AM CDT | Areal Flood Advisory | SHV | Claiborne | 2 hr |
Nearby
Flash Flood Warnings in Louisiana, 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.