Alert archive / Louisiana / Tornado Warnings in 1986
Tornado Warning 14, NWS Shreveport, LA
NWS Shreveport, LA issued this tornado warning at Apr 11, 1986, 11:27 PM CST for Ouachita Parish, Richland Parish, Louisiana. It was in force for 48 min. 3 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
- Apr 11, 1986, 11:27 PM CST (05:27 UTC)
- Expired
- Apr 12, 1986, 12:15 AM CST
- In force
- 48 min
- Issued by
- NWS Shreveport, LA
- Area
- Whole counties
Counties Ouachita Parish, LA, Richland 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 |
|---|---|---|---|
| Apr 11, 11:33 PM CST | Hail 2 | Ouachita, LA | |
| Apr 12, 12:05 AM CST | Tornado F1 | Richland, LA | |
| Apr 12, 12:10 AM CST | Hail 1.75 | Richland, 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
Jackson, MS (KJAN), launched 00:00Z, 5.5 hours before the alert went out and 177 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2271 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 21 m²/s²
- 0-3 km storm-relative helicity
- 75 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSHV 120529 TORSHV LAC073-083-120615- BULLETIN...EBS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE SHREVEPORT LA 1127PM CST FRI APR 11 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 12:15 AM CST FOR PEOPLE IN THE FOLLOWING PARISHES IN NORTHEAST LOUISIANA...THE SOUTHERN HALF OF OUACHITA AND THE SOUTHERN HALF OF RICHLAND. AT 11:20 PM THE NATIONAL WEATHER SERVICE RADAR IN SHREVEPORT INDICATED A POSSIBLE TORNADO ABOUT 4 MILES SOUTH WEST MONROE LOUISIANA MOVING EAST NEAR 35 MPH. A FUNNEL CLOUD WAS REPORTED SOUTH OF WEST MONROE AT 11:25 PM
What forecasters said that day
The local office's own words before this tornado 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, 8:19 PM CST, 3 hours 8 minutes before
NEWSPSSHV SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SHREVEPORT LA 815 PM CST FRI APR 12 1986 ...ISOLATED VERY HEAVY THUNDERSTORMS ARE MOVING OUT OF THE EXTREME NORTHEAST CORNER OF TEXAS INTO SOUTHWEST ARKNASAS... AT 810 PM THE WEATHER SERVICE RADAR IN SHREVEPORT INDICATED A COUPLE OF VERY STRONG THUNDERSTOMS...ONE ALONG THE RED RIVER SOUTHWEST OF ASHDOWN ARKANSAS AND THE OTHER ALONG THE CASS / BOWIE COUNTY LINE 10 MILES SOUTHWEST OF TEXARKANA. THESE STORMS WILL CAUSE HEAVY DOWNPOURS...FREQUENT CLOUD TO GROUND LIGHTNING AND SMALL HAIL AS THEY MOVE NORTHEAST THROUGH THE ASHDOWN AND TEXARKANA AREAS DURING THE NEXT HOUR. THEY WERE MOVING NORTHEAST 30 MPH. THE STORMS WERE PART OF AN AREA OS SCATTERED SHOWERS AND THUNDERSTOMRS THAT EXTENDED FROM NORTHWEST OF IDABEL OKLAHOMA SOUTHEAST INTO THE TEXARKANA AREA. OTHER WIDELY SCATTERED SHOWERS OR THUNDERSHOWERS WERE OCCURRING IN NORTHEAST TEXAS FROM NEAR LONGVIEW SOUTH INTO THE HENDERSON / CARTHAGE AREA.
The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 11, 9:05 PM CST | Severe Thunderstorm Warning | SHV | Bossier | 20 min |
| Apr 11, 9:05 PM CST | Severe Thunderstorm Warning | SHV | Claiborne, Webster | 60 min |
| Apr 11, 10:05 PM CST | Severe Thunderstorm Warning | SHV | Claiborne, Lincoln, Union | 65 min |
| Apr 11, 11:10 PM CST | Severe Thunderstorm Warning | SHV | Lincoln, Ouachita, Union | 60 min |
| Apr 11, 11:10 PM CST | Severe Thunderstorm Warning | SHV | Claiborne | 60 min |
| Apr 11, 11:55 PM CST | Tornado Warning | SHV | Franklin | 35 min |
| Apr 12, 12:20 AM CST | Tornado Warning | SHV | Madison, Tensas | 40 min |
| Apr 12, 12:45 AM CST | Severe Thunderstorm Warning | SHV | Ouachita, Richland | 60 min |
| Apr 12, 1:45 AM CST | Severe Thunderstorm Warning | SHV | Caddo | 60 min |
| Apr 12, 1:45 AM CST | Severe Thunderstorm Warning | SHV | Bossier | 60 min |
| Apr 12, 2:29 AM CST | Severe Thunderstorm Warning | SHV | Tensas | 31 min |
| Apr 12, 2:45 AM CST | Severe Thunderstorm Warning | SHV | Bossier, Caddo | 60 min |
Nearby
Tornado Warnings in Louisiana, 1986Every tornado warning in 1986Tornadoes in 1986
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.