Alert archive / Louisiana / Flash Flood Warnings in 1989
Flash Flood Warning 7, NWS Shreveport, LA
NWS Shreveport, LA issued this flash flood warning at May 5, 1989, 4:47 AM CDT for Bossier Parish, Caddo Parish, Louisiana. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- May 5, 1989, 4:47 AM CDT (09:47 UTC)
- Expired
- May 5, 1989, 7:45 AM CDT
- In force
- 3 hr
- Issued by
- NWS Shreveport, LA
- Area
- Whole counties
Counties Bossier Parish, LA, Caddo Parish, LA
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Longview/Gregg, TX (KGGG), launched 00:00Z, 9.8 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.
- Mixed-layer CAPE
- 309 J/kg
- Mixed-layer CIN
- -227 J/kg
- Mixed-layer LCL
- 1028 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 140 m²/s²
- 0-3 km storm-relative helicity
- 223 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 7.2
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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.
In the hours before
Local storm report, May 5, 12:27 AM CDT, 4 hours 20 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1220 AM CDT FRI MAY 5 1989
...ADDITIONAL REPORTS FROM THURSDAY MAY 4 1989...
1121 PM CDT...PEA TO MARBLE SIZE HAIL AT NLU IN MONROE LOUISIANA
OUACHITA PARISH.
1125 PM CDT...SEVERAL STREET CLOSURES IN SHREVEPORT DUE TO PONDING
OF WATER AND UNDERPASSES.
1130 PM CDT...UNOFFICIAL REPORT OF THREE INCHES OF RAIN IN ABOUT
A FORTY FIVE MINUTE TIME PERIOD IN BOSSIER CITY..
BOSSIER PARISH.
...REPORTS FOR FRIDAY MAY 5 1989...
1210 PM CDT...UNOFFICIAL REPORT OF NEAR THREE INCHES OF RAIN ALSO
IN ABOUT 45 MINUTES FROM MINDEN LOUISIANA..WEBSTER
PARISH.
1220 AM CDT...UNOFFICIAL RAINFALL REPORT TOTAL.. FOUR INCHES - THREE
OF WHICH OCCURRED IN ABOUT A FORTY FIVE MINUTE TIME
PERIOD..HEFLIN LOUISIANA..WEBSTER PARISH.Local storm report, May 5, 12:28 AM CDT, 4 hours 19 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1220 AM CDT FRI MAY 5 1989
...ADDITIONAL REPORTS FROM THURSDAY MAY 4 1989...
1121 PM CDT...PEA TO MARBLE SIZE HAIL AT NLU IN MONROE LOUISIANA
OUACHITA PARISH.
1125 PM CDT...SEVERAL STREET CLOSURES IN SHREVEPORT DUE TO PONDING
OF WATER AND UNDERPASSES.
1130 PM CDT...UNOFFICIAL REPORT OF THREE INCHES OF RAIN IN ABOUT
A FORTY FIVE MINUTE TIME PERIOD IN BOSSIER CITY..
BOSSIER PARISH.
...REPORTS FOR FRIDAY MAY 5 1989...
1210 AM CDT...UNOFFICIAL REPORT OF NEAR THREE INCHES OF RAIN ALSO
IN ABOUT 45 MINUTES FROM MINDEN LOUISIANA..WEBSTER
PARISH.
1220 AM CDT...UNOFFICIAL RAINFALL REPORT TOTAL.. FOUR INCHES - THREE
OF WHICH OCCURRED IN ABOUT A FORTY FIVE MINUTE TIME
PERIOD..HEFLIN LOUISIANA..WEBSTER PARISH.The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 4, 9:52 PM CDT | Severe Thunderstorm Warning | SHV | Bossier, Caddo | 68 min |
| May 4, 10:29 PM CDT | Severe Thunderstorm Warning | SHV | Claiborne, Webster | 61 min |
| May 4, 11:03 PM CDT | Severe Thunderstorm Warning | SHV | Bossier | 57 min |
| May 4, 11:14 PM CDT | Tornado Warning | SHV | Caddo | 50 min |
| May 4, 11:33 PM CDT | Severe Thunderstorm Warning | SHV | Bienville, Lincoln | 57 min |
| May 4, 11:33 PM CDT | Severe Thunderstorm Warning | SHV | Webster | 57 min |
| May 5, 12:11 AM CDT | Severe Thunderstorm Warning | SHV | Ouachita, Richland | 64 min |
| May 5, 12:53 AM CDT | Severe Thunderstorm Warning | SHV | Bienville | 67 min |
| May 5, 1:19 AM CDT | Severe Thunderstorm Warning | SHV | Webster | 56 min |
| May 5, 1:37 AM CDT | Flash Flood Warning | SHV | Bossier, Caddo | 3 hr |
| May 5, 1:37 AM CDT | Flash Flood Warning | SHV | Webster | 3 hr |
| May 5, 2:05 AM CDT | Severe Thunderstorm Warning | SHV | Madison | 40 min |
| May 5, 2:23 AM CDT | Severe Thunderstorm Warning | SHV | Caddo, De Soto, Sabine | 67 min |
| May 5, 2:23 AM CDT | Severe Thunderstorm Warning | SHV | Bienville, Bossier | 67 min |
| May 5, 2:53 AM CDT | Severe Thunderstorm Warning | SHV | East Carroll | 67 min |
| May 5, 2:53 AM CDT | Severe Thunderstorm Warning | SHV | Morehouse | 67 min |
| May 5, 3:15 AM CDT | Tornado Warning | SHV | Bossier, Caddo | 60 min |
| May 5, 4:02 AM CDT | Severe Thunderstorm Warning | SHV | Bienville, Webster | 58 min |
| May 5, 4:47 AM CDT | Flash Flood Warning | SHV | Bienville, Claiborne, Webster | 3 hr |
| May 5, 6:29 AM CDT | Flash Flood Warning | SHV | Ouachita, Richland | 4 hr |
| May 5, 1:19 AM CDT | Severe Thunderstorm Warning | SHV | Cass, Marion | 56 min |
| May 5, 1:19 AM CDT | Severe Thunderstorm Warning | SHV | Rusk | 56 min |
| May 5, 1:46 AM CDT | Severe Thunderstorm Warning | SHV | Gregg, Harrison, Panola | 59 min |
| May 5, 1:46 AM CDT | Severe Thunderstorm Warning | SHV | Shelby | 59 min |
Nearby
Flash Flood Warnings in Louisiana, 1989Every flash flood warning in 1989
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.