Alert archive / Louisiana / Severe Thunderstorm Warnings in 1989
Severe Thunderstorm Warning 76, NWS Shreveport, LA
NWS Shreveport, LA issued this severe thunderstorm warning at May 4, 1989, 9:52 PM CDT for Bossier Parish, Caddo Parish, Louisiana. It was in force for 68 min. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- May 4, 1989, 9:52 PM CDT (02:52 UTC)
- Expired
- May 4, 1989, 11:00 PM CDT
- In force
- 68 min
- 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 4, 10:00 PM CDT | Hail 1.75 | Bossier, LA | |
| May 4, 10:04 PM CDT | Hail 1.75 | Caddo, LA |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Longview/Gregg, TX (KGGG), launched 00:00Z, 2.9 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 severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, May 4, 6:46 PM CDT, 3 hours 6 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SHREVEPORT LA 645 PM CDT THU MAY 4 1989 ...SHOWERS AND THUNDERSTORMS DEVELOPED RAPIDLY OVER NORTHEAST TEXAS AND NORTHWEST LOUISIANA... AT 640 PM WEATHER SERVICE RADARS IN SHREVEPORT AND LONGIVEW SHOWED NEWLY FORMED SHOWERS AND THUNDERSTORMS OVER EAST TEXAS AND NORTHWEST LOUISIANA. THERE WAS ACTUALLY TWO SMALL AREAS ONE EXTENDED FROM NEAR TYLER AND MARSHASLL SOUTHEAST INTO NORTHWEST LOUISIANA TO NEAR SHREVEPORT/BOSSIER CITY AND TO NEAR STONEWALL..AND THE SECOND EXTENDED FROM NEAR KILDARE TEXAS SOUTHEAST INTO NORTHWEST LOUISIANA TO NEAR VIVIAN..BENTON..AND MINDEN. THE SHOWERS AND THUNDERSTORMS WERE MOVING TO THE EAST AT 20 MPH QAND SHOULD CONTINUE INTO SOUTHWEST ARKANSAS. THE THUNDERSTORMS WILL PRODUCE GUSTY WINDS AND BRIEF HEAVY RAINFALL.
Special weather statement, May 4, 7:42 PM CDT, 2 hours 10 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SHREVEPORT LA 745 PM CDT THU MAY 4 1989 ...SHOWERS AND THUNDERSTORMS CONTINUE OVER NORTHEAST TEXAS AND NORTHWEST LOUISIANA AND HAD MOVED INTO EXTREME SOUTH ARKANSAS... AT 737 PM WEATHER SERVICE RADARS IN SHREVEPORT AND LONGVIEW SHOWED AN AREA OF SHOWERS AND THUNDERSTORMS OVER NORTHEAST TEXAS..NORTHWEST LOUISIANA..AND SOUTH ARKANSAS. WITH THE AREA A BAND OF SHOWERS AND STRONG THUNDERSTORMS..PRODUCING HEAVY RAINFALL..EXTENDED FROM NEAR BENTON LOUISIANA SOUTHEAST TO NEAR MINDEN..SIBLEY..AND BIENVILLE. THE STRONGER STORMS WITHIN THIS BAND WERE PRODUCING VERY HEAVY RAINFALL ..STRONG AND GUSTY WINDS..FREQUENT LIGHTNING..AND POSSIBLY SOME HAIL. ANOTHER BAND EXTENDED FROM NEAR SPRING HILL SOUTHEAST TO NEAR DUBACH ..AND TO JUST SOUTH OF MONROE LOUISIANA. THE SHOWERS AND THUNDERSTORMS WERE MOVING TO THE EAST AT 25 MPH.
Special weather statement, May 4, 9:15 PM CDT, 37 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SHREVEPORT LA 915 PM CDT THU MAY 4 1989 ...SHOWERS AND THUNDERSTORMS CONTINUE OVER NORTHEAST TEXAS.. SOUTHWEST ARKANSAS..AND NORTH LOUISIANA... AT 905 PM WEATHER SERVICE RADAR IN SHREVEPORT SHOWED AN AREA OF SHOWERS AND THUNDERSTORMS OVER NORTHEAST TEXAS..NORTH LOUISIANA..AND SOUTH ARKANSAS ABOUT 75 MILES WIDE THAT WAS LOCATED GENERALLY NORTH OF A LINE FROM NEAR CARTHAGE TEXAS EAST TO NEAR SHREVEPORT..CASTOR.. JONESBORO..MONROE..AND DELHI LOUISIANA. THE STRONGER THUNDERSTORMS WRE INDICATED NEAR PLAIN DEALING..COTTON VALLEY..MINDEN..GIBSLAND.. AND SOUTHWEST OF CALHOUN LOUISIANA AND NEAR DE BERRY AND EAST OF JEFFERSON OVER CADDO LAKE TEXAS. THE SHOWERS AND THUNDERSTORMS HAVE BEEN PRODUCING GUSTY WINDS..FREQUENT LIGHTNING..AND HEAVY RAINFALL AS THEY MOVED TO THE EAST NORTHEAST AT 25 MPH. DUE TO THE HEAVY RAINS..SOME PONDING OF WATER MAY OCCUR IN STREETS..LOW LYING..AND POOR DRAINAGE AREAS.
The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| 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 | Bossier, Caddo | 3 hr |
| 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
Severe Thunderstorm Warnings in Louisiana, 1989Every severe thunderstorm 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.