Alert archive / Texas / Flash Flood Warnings in 1990
Flash Flood Warning 33, NWS Shreveport, LA
NWS Shreveport, LA issued this flash flood warning at May 12, 1990, 1:30 PM CDT for De Soto Parish, Sabine Parish, Louisiana; Panola County, Rusk County, Shelby County, Texas. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- May 12, 1990, 1:30 PM CDT (18:30 UTC)
- Expired
- May 12, 1990, 5:30 PM CDT
- In force
- 4 hr
- Issued by
- NWS Shreveport, LA
- Area
- Whole counties
Counties De Soto Parish, LA, Sabine Parish, LA, Panola County, TX, Rusk County, TX, Shelby County, TX
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
Lake Charles Mun, LA (KLCH), launched 12:00Z, 6.5 hours before the alert went out and 219 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
- 1655 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 555 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 280 m²/s²
- 0-3 km storm-relative helicity
- 430 m²/s²
- Significant tornado parameter
- 3.6
- Supercell composite
- 16.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSHV 121840 FFWSHV LAC015-017-031-069-081-085-119-013-TXC203-365-401-419-122230- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE SHREVEPORT LA 130 PM CDT SAT MAY 12 1990 THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 530 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS.. IN NORTHWEST LOUISIANA ...BOSSIER PARISH...CADDO PARISH...DESOTO PARISH...NATCHITOCHES PARISH...RED RIVER PARISH...SABINE PARISH...WEBSTER PARISH... BIENVILLE PARISH IN NORTHEAST TEXAS ...HARRISON COUNTY...PANOLA COUNTY...RUSK COUNTY...SHELBY COUNTY . AT 130 PM CDT THE NATIONAL WEATHER SERVICE RADAR IN SHREVEPORT SHOWED A LARGE AREA OF SHOWERS AND THUNDERSTORMS THAT COVERED MUCH OF NORTHWEST LOUISIANA AND NORTHEAST TEXAS AS WELL AS A PART OF SOUTHWEST ARKANSAS. THE SHOWERS AND THUNDERSTORMS WERE PRODUCING HEAVY RAINS OF ONE TO TWO INCHES IN A SHORT PERIOD OF TIME THAT WERE CAUSING FLOODING OF STREETS AND LOW LYING AREAS. SEVERAL SECONDARY AND SOME MAIN ROADWAYS HAVE BEEN AFFECTED INCLUDING HIGHWAY 59 BETWEEN TIMPSON AND TENAHA TEXAS. BACKWATER WAS OCCURING ON ALL STREAMS AND BAYOUS ...ADDITIONAL RAINS WILL ONLY AGGREVATE THE SITUATION. WITH THE GROUND SATURATED AND THE STREAMS IN FLOOD THE RAINS OVER THE AREA WILL CAUSE FLOODING PROBLEMS. IN GENERAL 3 TO 4 INCHES HAS FALLEN ACROSS THE WARNED AREA WITH RADAR INDICATING OVER 6 INCHES LIKELY OCCURING IN SOUTHERN RUSK..SHELBY AND PANOLA COUNTIES IN TEXAS AS WELL AS DESOTO..RED RIVER..SOUTHERN WEBSTER..NORTHERN SABINE AND NORTHERN NATCHITOCHES IN NORTHWEST LOUISIANA. ALONG WITH THE THREAT OF FLOODING...SEVERE STORMS ARE POSSIBLE ACROSS THE ARKLATEX THIS AFTERNOON AND EVENING. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND.
The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 12, 1:57 AM CDT | Severe Thunderstorm Warning | SHV | Bossier, Caddo | 48 min |
| May 12, 2:29 AM CDT | Severe Thunderstorm Warning | SHV | Claiborne, Webster | 61 min |
| May 12, 2:48 AM CDT | Tornado Warning | SHV | De Soto | 57 min |
| May 12, 5:13 AM CDT | Severe Thunderstorm Warning | SHV | Natchitoches | 62 min |
| May 12, 5:57 AM CDT | Severe Thunderstorm Warning | SHV | Winn | 63 min |
| May 12, 8:09 AM CDT | Severe Thunderstorm Warning | SHV | De Soto | 66 min |
| May 12, 8:49 AM CDT | Tornado Warning | SHV | Sabine | 56 min |
| May 12, 9:23 AM CDT | Flash Flood Warning | SHV | Bossier, Caddo, Red River, Webster | 4 hr |
| May 12, 9:23 AM CDT | Flash Flood Warning | SHV | De Soto, Natchitoches, Sabine | 4 hr |
| May 12, 9:42 AM CDT | Tornado Warning | SHV | Natchitoches | 48 min |
| May 12, 10:45 AM CDT | Severe Thunderstorm Warning | SHV | Caldwell, Winn | 60 min |
| May 12, 10:45 AM CDT | Severe Thunderstorm Warning | SHV | Ouachita | 60 min |
| May 12, 11:46 AM CDT | Severe Thunderstorm Warning | SHV | Caddo, De Soto | 59 min |
| May 12, 11:46 AM CDT | Severe Thunderstorm Warning | SHV | Franklin | 59 min |
| May 12, 12:25 PM CDT | Severe Thunderstorm Warning | SHV | Madison, Tensas | 65 min |
| May 12, 12:41 PM CDT | Severe Thunderstorm Warning | SHV | Bienville, De Soto, Red River | 94 min |
| May 12, 1:30 PM CDT | Flash Flood Warning | SHV | Bienville, Bossier, Webster | 4 hr |
| May 12, 1:30 PM CDT | Flash Flood Warning | SHV | Caddo | 4 hr |
| May 12, 1:30 PM CDT | Flash Flood Warning | SHV | Natchitoches, Red River | 4 hr |
| May 12, 1:50 PM CDT | Severe Thunderstorm Warning | SHV | Natchitoches, Winn | 55 min |
| May 12, 2:44 PM CDT | Severe Thunderstorm Warning | SHV | Caldwell, Winn | 61 min |
| May 12, 3:08 PM CDT | Flash Flood Warning | SHV | Winn | 2 hr |
| May 12, 3:51 PM CDT | Severe Thunderstorm Warning | SHV | Franklin, Tensas | 69 min |
| May 12, 6:48 PM CDT | Severe Thunderstorm Warning | SHV | Caddo, De Soto | 57 min |
| May 12, 2:06 AM CDT | Severe Thunderstorm Warning | SHV | Panola | 54 min |
| May 12, 2:20 AM CDT | Tornado Warning | SHV | Panola | 25 min |
| May 12, 9:23 AM CDT | Flash Flood Warning | SHV | Gregg, Harrison, Marion, Panola, Rusk | 4 hr |
| May 12, 9:23 AM CDT | Flash Flood Warning | SHV | Shelby | 4 hr |
| May 12, 10:45 AM CDT | Severe Thunderstorm Warning | SHV | Panola, Rusk | 60 min |
| May 12, 11:33 AM CDT | Severe Thunderstorm Warning | SHV | Bowie, Cass | 57 min |
| May 12, 1:09 PM CDT | Severe Thunderstorm Warning | SHV | Bowie, Cass | 66 min |
| May 12, 5:09 PM CDT | Severe Thunderstorm Warning | SHV | Gregg, Harrison, Rusk | 66 min |
| May 12, 6:12 PM CDT | Severe Thunderstorm Warning | SHV | Harrison, Panola, Rusk | 63 min |
| May 12, 6:36 PM CDT | Flash Flood Warning | SHV | Panola, Rusk, Shelby | 3 hr |
Nearby
Flash Flood Warnings in Texas, 1990Flash Flood Warnings in Louisiana, 1990Every flash flood warning in 1990
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.