Alert archive / Louisiana / Flash Flood Warnings in 1991
Flash Flood Warning 13, NWS Shreveport, LA
NWS Shreveport, LA issued this flash flood warning at Apr 12, 1991, 4:42 AM CDT for Caddo Parish, De Soto Parish, Louisiana. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Apr 12, 1991, 4:42 AM CDT (09:42 UTC)
- Expired
- Apr 12, 1991, 7:45 AM CDT
- In force
- 3 hr
- Issued by
- NWS Shreveport, LA
- Area
- Whole counties
Counties Caddo Parish, LA, De Soto Parish, LA
The nearest sounding before it
Longview/Gregg, TX (KGGG), launched 00:00Z, 9.7 hours before the alert went out and 74 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
- 633 J/kg
- Mixed-layer CIN
- -105 J/kg
- Mixed-layer LCL
- 671 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 266 m²/s²
- 0-3 km storm-relative helicity
- 418 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 11.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSHV 120945 FFWSHV LAC015-017-031-119-121245- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE SHREVEPORT LA 442 AM CDT FRI APR 12 1991 THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 745 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS.. IN NORTHWEST LOUISIANA ...BOSSIER PARISH...CADDO PARISH...DESOTO PARISH...WEBSTER PARISH AT 440 AM CDT THE NATIONAL WEATHER SERVICE RADAR IN SHREVEPORT SHOWED A BAND OF STRONG THUNDERSTORMS THAT EXTENDED FROM NEAR SPRINGHILL LOUISIANA TO NEAR MANSFIELD LOUISIANA. ANOTHER BAND OF STRONG THUNDERSTORMS WAS NOTED FROM BENTON LOUISIANA TO BETHANY LOUISIANA. THESE STORMS WERE PRODUCING STRONG WINDS...HAIL AND FLOOD PRODUCING RAINFALL. MOVEMENT WAS NORTHEAST AT 30 MILES AN HOUR. EVEN WITH THE GOOD MOVEMENT THE STORMS THE STORMS WERE TRACKING OVER THE SAME GENERAL AREA. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGUNIZE THE DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED...ACT QUICKLY. MOVE UP TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
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
Special weather statement, Apr 11, 11:01 PM CDT, 5 hours 41 minutes before
OKZ040-021-034-TXZ022-023-027-028-032-033-ARZ009-010-011-016-LAZ001- 002-003-004-005-006-120430- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SHREVEPORT LA 1100 PM CDT THU APR 11 1991 ...A SEVERE THUNDERSTORM WARNING REMAINED IN EFFECT FOR MC CURTAIN COUNTY IN SOUTHEAST OKLAHOMA UNTIL 1115 PM... ...SEVERE THUNDERSTORM WATCH REMAINED IN EFFECT UNTIL 300 AM FOR PARTS OF NORTHEAST TEXAS AND SOUTHEAST OKLAHOMA.... AT 1055 PM CDT THE NATIONAL WEATHER SERVICE RADAR IN SHREVEPORT SHOWED SCATTERED SHOWERS AND THUNDERSTORMS THAT EXTENDED NORTHWEST OF A LINE FROM MURFREESBORO ARKANSAS TO ASHDOWN ARKANSAS TO NEAR PITTSBURG TEXAS. POSSIBLE SEVERE THUNDERSTORMS WERE NOTED FROM 5 MILES NORTH OF BROKEN BOW OKLAHOMA TO 15 MILES NORTH OF VALLIANT OKLAHOMA. OTHER STRONG THUNDERSTORMS WERE NORTH OF FOREMAN ARKANSAS. MOVEMENT WAS NORTHEAST AT 25 MILES AN HOUR. A 25 MILE WIDE AREA OF SHOWERS WAS INDICATED FROM NEAR LOGANSPORT LOUISIANA ACROSS HALLSVILLE TEXAS TO NEAR MINEOLA TEXAS. ANOTHER AREA OF SCATTERED SHOWERS WAS NOTED FROM NEAR REKLAW TEXAS TO NORTH OF NACOGDOCHES TEXAS. SCATTERED SHOWERS AND THUNDERSHOWERS WERE LOCATED IN A 30 MILE WIDE AREA THAT EXTENDED FROM NEAR PALESTINE TEXAS TO SOUTH OF LUFKIN TEXAS. ELSEWHERE...SCATTERED SHOWERS LINGERED OVER SOUTH CENTRAL ARKANSAS FROM THE LOUISIANA/ARKANSAS BORDER NORTH OF HAYNESVILLE LOUISIANA TO NEAR WARREN ARKANSAS. THE SHOWERS AND THUNDERSTORMS OVER NORTH CENTRAL TEXAS 3WILL CONTINUE TO DEVELOP AND INTENSIFY...AFFECTING THE WESTERN SECTIONS OF THE ARKLATEX THROUGH THE NIGHT. LOCALLY HEAVY RAINS WILL OCCUR ALONG WITH THE THREAT FOR HIGH WINDS AND LARGE HAIL.
Special weather statement, Apr 11, 11:37 PM CDT, 5 hours 5 minutes before
OKZ040-021-034-TXZ022-023-027-028-032-033-ARZ009-010-011-016-LAZ001- 002-003-004-005-006-120600- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SHREVEPORT LA 1130 PM CDT THU APR 11 1991 ...THE SEVERE THUNDERSTORM WARNING ISSUED EARLIER FOR MC CURTAIN COUNTY IN SOUTHEAST OKLAHOMA HAS EXPIRED... ...A SEVERE THUNDERSTORM WATCH REMAINED IN EFFECT UNTIL 300 AM FOR PARTS OF NORTHEAST TEXAS AND SOUTHEAST OKLAHOMA.... AT 1125 PM CDT THE NATIONAL WEATHER SERVICE RADAR IN SHREVEPORT SHOWED SCATTERED SHOWERS AND THUNDERSTORMS THAT EXTENDED NORTHWEST OF A LINE FROM NEAR MURFREESBORO ARKANSAS TO ASHDOWN ARKANSAS TO NEAR DANGERFIELD TEXAS. STRONG THUNDERSTORMS WERE NOTED NEAR SMITHVILLE AND NEAR BETHEL OKLAHOMA...ALSO NEAR DEQUEEN ARKANSAS AND NEAR MOUNT VERNON TEXAS. MOVEMENT WAS NORTH NORTHEAST AT 25 MILES AN HOUR. A 60 MILE WIDE AREA OF SHOWERS AND THUNDERSHOWERS WAS INDICATED FROM NEAR LINDEN TEXAS TO NEAR CENTER TEXAS. MOVEMENT WAS NORTHEAST NEAR 25 MILES AN HOUR. ELSEWHERE...SCATTERED SHOWERS LINGERED OVER SOUTH CENTRAL ARKANSAS FROM NEAR EL DORADO ARKANSAS TO NEAR WARREN ARKANSAS. THE SHOWERS AND THUNDERSTORMS OVER NORTH CENTRAL TEXAS WILL CONTINUE TO DEVELOP AND INTENSIZFY...AFFECTING THE WESTERN SECTIONS OF THE ARKLATEX THROUGH THE NIGHT. LOCALLY HEAVY RAINS WILL OCCUR ALONG WITH THE THREAT FOR HIGH WINDS AND LARGE HAIL.
Special weather statement, Apr 12, 12:49 AM CDT, 3 hours 53 minutes before
OKZ040-021-034-TXZ022-023-027-028-032-033-ARZ009-010-011-016-LAZ001- 002-003-004-005-006-120730- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SHREVEPORT LA 1245 AM CDT FRI APR 12 1991 ...A SEVERE THUNDERSTORM WATCH REMAINED IN EFFECT UNTIL 300 AM FOR PARTS OF NORTHEAST TEXAS AND SOUTHEAST OKLAHOMA.... ...A FLASH FLOOD WATCH REMAINED IN EFFECT FOR SOUTHWEST ARKANSAS... AT 1240 AM CDT THE NATIONAL WEATHER SERVICE RADAR IN SHREVEPORT SHOWED SCATTERED SHOWERS AND THUNDERSTORMS THAT EXTENDED WEST OF A LINE FROM NEAR MOUNT IDA ARKANSAS TO NORTHWEST OF HOPE ARKANSAS TO SHREVEPORT LOUISIANA TO NEAR CENTER AND LUFKIN TEXAS. THE PRECIPITATION EXTENDED ON WEST INTO THE DALLAS/FORT WORTH METROPLEX. WITHIN THIS LARGE AREA THE HEAVIEST RAIN WAS OCCURRING NEAR ATLANTA TEXAS...NEAR JEFFERSON TEXAS...SOUTH OF TYLER TEXAS AND NEAR RODESSA LOUISIANA. MOVEMENT WAS NORTH NORTHEAST NEAR 25 MILES AN HOUR. ALSO...SCATTERED SHOWERS WERE NOTED FROM NEAR WARREN ARKANSAS TO NEAR MALVERN ARKANSAS. THE SHOWERS AND THUNDERSTORMS OVER NORTH CENTRAL AND NORTHEAST TEXAS WILL CONTINUE TO BE STRONG BUT THE THREAT FOR LARGE HAIL AND HIGH WINDS HAS DIMINISHED SOMEWHAT. LOCALLY HEAVY RAINS HAVE NOW BECOME THE MAIN CONCERN.
Special weather statement, Apr 12, 1:33 AM CDT, 3 hours 9 minutes before
OKZ040-021-034-TXZ022-023-027-028-032-033-ARZ009-010-011-016-LAZ001- 002-003-004-005-006-120730- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SHREVEPORT LA 130 AM CDT FRI APR 12 1991 ...A SEVERE THUNDERSTORM WATCH REMAINED IN EFFECT UNTIL 300 AM FOR PARTS OF NORTHEAST TEXAS AND SOUTHEAST OKLAHOMA.... ...A FLASH FLOOD WATCH REMAINED IN EFFECT FOR SOUTHWEST ARKANSAS... AT 125 AM CDT THE NATIONAL WEATHER SERVICE RADAR IN SHREVEPORT SHOWED SCATTERED SHOWERS AND THUNDERSTORMS THAT EXTENDED WEST OF A LINE FROM NEAR ARKADELPHIA ARKANSAS TO NEAR MAGNOLIA ARKANSAS TO NEAR MINDEN LOUISIANA TO NEAR LUFKIN TEXAS. THE PRECIPITATION EXTENDED ON WEST TO NEAR DURANT OKLAHOMA AND GREENVILLE TEXAS. WITHIN THIS LARGE AREA... STRONG THUNDERSTORMS THAT WERE PRODUCING GUSTY WINDS AND HEAVY RAINS WERE LOCATED NORTHEAST OF LONGVIEW TEXAS...NEAR JEFFERSON TEXAS...NEAR LINDEN TEXAS...NEAR MAUD TEXAS...NEAR TEXARKANA ARKANSAS AND NEAR PLAIN DEALING LOUISIANA. MOVEMENT WAS NORTHEAST AT 30 MILES AN HOUR. . OTHER SCATTERED SHOWERS WERE NOTED FROM NEAR WARREN ARKANSAS TO NEAR SHERIDAN ARKANSAS. THE SHOWERS AND THUNDERSTORMS OVER NORTH CENTRAL AND NORTHEAST TEXAS WILL CONTINUE TO BE STRONG BUT THE THREAT FOR LARGE HAIL AND HIGH WINDS HAS DIMINISHED SOMEWHAT. LOCALLY HEAVY RAINS HAVE NOW BECOME THE MAIN CONCERN. AS THE SHOWERS AND THUNDERSTORMS CONTINUE TO SPREAD OVER THE SAME GENERAL AREA RAINFALL AMOUNTS OVER NORTHEAST TEXAS AND SOUTHWEST ARKANSAS WILL APPROACH TWO INCHES.
Special weather statement, Apr 12, 2:33 AM CDT, 2 hours 9 minutes before
OKZ040-021-034-TXZ022-023-027-028-032-033-ARZ009-010-011-016-LAZ001- 002-003-004-005-006-120830- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SHREVEPORT LA 225 AM CDT FRI APR 12 1991 ...A SEVERE THUNDERSTORM WATCH REMAINED IN EFFECT UNTIL 300 AM FOR PARTS OF NORTHEAST TEXAS AND SOUTHEAST OKLAHOMA.... ...A FLASH FLOOD WATCH REMAINED IN EFFECT FOR SOUTHWEST ARKANSAS... AT 220 AM CDT THE NATIONAL WEATHER SERVICE RADAR IN SHREVEPORT SHOWED SCATTERED SHOWERS AND THUNDERSTORMS THAT EXTENDED WEST OF A LINE FROM FORDYCE ARKANSAS TO JUNCTION CITY ARKANSAS TO NEAR ARCADIA LOUISIANA TO STONEWALL LOUISIANA TO NEAR CENTER TEXAS. THE RAIN EXTENDED NORTHWEST OF THIS LINE SOME 150 MILES. WITHIN THIS LARGE AREA...THUNDERSTORMS THAT WERE PRODUCING GUSTY WINDS AND HEAVY RAINS WERE NOTED FROM 5 MILES NORTHEAST OF TEXARKANA TO 15 MILES SOUTHWEST OF TEXARKANA TEXAS...ALSO NEAR FOUKE ARKANSAS...SOUTHWEST OF EL DORADO ARKANSAS...NORTHWEST OF MINDEN LOUISIANA AND FROM CADDO LAKE TO BETHANY LOUISIANA. MOVEMENT WAS NORTHEAST NEAR 30 MILES AN HOUR. . ANOTHER STRONG THUNDERSTORM WAS LOCATED NEAR CLARKSVILLE TEXAS. ALONG WITH THE GUSTY WINDS AND HEAVY RAINS...FREQUENT LIGHTNING WILL ACCOMPANY THE STORMS. THE SHOWERS AND THUNDERSTORMS OVER NORTHEAST TEXAS WILL CONTINUE TO BE STRONG BUT THE THREAT FOR LARGE HAIL AND HIGH WINDS HAS DIMINISHED. THE STORMS ALONG THE LOUISIANA/TEXAS BORDER SECTIONS AND SOUTHWEST ARKANSAS WILL CONTINUE TO INTENSIFY. HEAVY RAINS WILL CONTINUE TO AFFECT THE AREA. AS THE SHOWERS AND THUNDERSTORMS CONTINUE TO SPREAD THE SAME GENERAL AREA RAINFALL AMOUNTS OVER NORTHEAST TEXAS AND SOUTH- WEST ARKANSAS WILL APPROACH THREE INCHES.
Special weather statement, Apr 12, 3:14 AM CDT, 1 hour 28 minutes before
OKZ040-021-034-TXZ022-023-027-028-032-033-ARZ009-010-011-016-LAZ001- 002-003-004-005-006-120930- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SHREVEPORT LA 310 AM CDT FRI APR 12 1991 ...A FLASH FLOOD WATCH REMAINED IN EFFECT FOR SOUTHWEST ARKANSAS... AT 305 AM CDT THE NATIONAL WEATHER SERVICE RADAR IN SHREVEPORT SHOWED SCATTERED SHOWERS AND THUNDERSTORMS THAT EXTENDED NORTHWEST OF A LINE FROM MONTICELLO ARKANSAS TO JUNCTION CITY ARKANSAS TO HOMER LOUISIANA TO MANSFIELD LOUISIANA TO NEAR CENTER TEXAS. THE RAIN EXTENDED NORTHWEST OF THIS LINE SOME 150 MILES. WITHIN THIS LARGE AREA...THUNDERSTORMS THAT WERE PRODUCING GUSTY WINDS AND HEAVY RAINS WERE NOTED FROM NEAR TEXARKANA ARKANSAS TO NEAR HUGHES SPRINGS TEXAS...ALSO NEAR VIVIAN LOUISIANA AND FROM BENTON LOUISIANA TO TIMPSON TEXAS. MOVEMENT WAS NORTHEAST NEAR 30 MILES AN HOUR. ANOTHER 20 MILE WIDE AREA OF SHOWERS HAD DEVELOPED FROM NEAR SICILY ISLAND LOUISIANA ACROSS CALHOUN TO NEAR BERNICE LOUISIANA. . OTHER SHOWERS AND THUNDERSTORMS WERE NOTED FROM NEAR VAN TEXAS TO NEAR PARIS TEXAS. ALONG WITH THE GUSTY WINDS AND HEAVY RAINS...FREQUENT LIGHTNING WILL ACCOMPANY THE STORMS. THE STORMS ALONG THE LOUISIANA/TEXAS BORDER SECTIONS AND SOUTHWEST ARKANSAS WILL CONTINUE TO INTENSIFY. HEAVY RAINS WILL CONTINUE TO AFFECT THE AREA. AS THE SHOWERS AND THUNDERSTORMS CONTINUE TO SPREAD OVER THE SAME GENERAL AREA RAINFALL AMOUNTS OVER NORTHEAST TEXAS AND SOUTHWEST ARKA%NSAS WILL APPROACH THREE INCHES IN SOME LOCATIONS.
The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 12, 4:32 AM CDT | Severe Thunderstorm Warning | SHV | Bossier, Caddo | 58 min |
| Apr 12, 4:42 AM CDT | Flash Flood Warning | SHV | Bossier, Webster | 3 hr |
| Apr 12, 5:42 AM CDT | Severe Thunderstorm Warning | SHV | Bossier, Webster | 63 min |
| Apr 12, 6:43 AM CDT | Severe Thunderstorm Warning | SHV | Bienville, Claiborne, Webster | 62 min |
| Apr 12, 7:00 AM CDT | Severe Thunderstorm Warning | SHV | Bossier, Caddo | 60 min |
| Apr 12, 7:20 AM CDT | Flash Flood Warning | SHV | Bossier, Webster | 115 min |
| Apr 12, 7:20 AM CDT | Flash Flood Warning | SHV | Caddo | 115 min |
| Apr 12, 7:32 AM CDT | Tornado Warning | SHV | Bossier, Caddo | 58 min |
| Apr 12, 7:57 AM CDT | Severe Thunderstorm Warning | SHV | Bossier, Webster | 63 min |
| Apr 12, 7:57 AM CDT | Severe Thunderstorm Warning | SHV | Caddo | 63 min |
| Apr 12, 8:55 AM CDT | Flash Flood Warning | SHV | Bienville, Bossier, Caddo, Webster | 3 hr |
| Apr 12, 8:55 AM CDT | Flash Flood Warning | SHV | De Soto | 3 hr |
| Apr 12, 8:55 AM CDT | Flash Flood Warning | SHV | Claiborne | 3 hr |
| Apr 12, 10:11 AM CDT | Severe Thunderstorm Warning | SHV | Bienville, Bossier, Webster | 64 min |
| Apr 12, 11:05 AM CDT | Severe Thunderstorm Warning | SHV | Bossier, Caddo | 55 min |
| Apr 12, 11:50 AM CDT | Flash Flood Warning | SHV | Bienville, Bossier, Claiborne, Webster | 3 hr |
| Apr 12, 11:50 AM CDT | Flash Flood Warning | SHV | Caddo | 3 hr |
| Apr 12, 11:50 AM CDT | Flash Flood Warning | SHV | De Soto | 3 hr |
| Apr 12, 12:03 PM CDT | Severe Thunderstorm Warning | SHV | Claiborne, Webster | 87 min |
Nearby
Flash Flood Warnings in Louisiana, 1991Every flash flood warning in 1991
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.