Alert archive / Louisiana / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 25, NWS New Orleans, LA
NWS New Orleans, LA issued this severe thunderstorm warning at Nov 25, 1986, 7:51 AM CST for Assumption Parish, Terrebonne Parish, Louisiana. It was in force for 54 min. 1 report 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
- Nov 25, 1986, 7:51 AM CST (13:51 UTC)
- Expired
- Nov 25, 1986, 8:45 AM CST
- In force
- 54 min
- Issued by
- NWS New Orleans, LA
- Area
- Whole counties
Counties Assumption Parish, LA, Terrebonne 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 |
|---|---|---|---|
| Nov 25, 7:51 AM CST | Thunderstorm Wind 0 | Terrebonne, 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
Boothville, LA (KBVE), launched 12:00Z, 1.9 hours before the alert went out and 153 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
- 1207 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 688 m above ground
- 0-6 km bulk shear
- 0 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- 0 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 25, 7:00 AM CST | Severe Thunderstorm Warning | LIX | Iberia, Saint Martin, St. Mary | 60 min |
| Nov 25, 7:51 AM CST | Severe Thunderstorm Warning | LIX | Lafourche, Saint Charles, Saint John the Baptist | 54 min |
| Nov 25, 7:51 AM CST | Severe Thunderstorm Warning | LIX | Saint James | 54 min |
| Nov 25, 8:30 AM CST | Severe Thunderstorm Warning | LIX | Orleans, Plaquemines, Saint Bernard | 60 min |
| Nov 25, 8:30 AM CST | Severe Thunderstorm Warning | LIX | Jefferson | 60 min |
| Nov 25, 8:30 AM CST | Severe Thunderstorm Warning | LIX | Saint Tammany, Tangipahoa, Washington | 60 min |
| Nov 25, 9:30 AM CST | Severe Thunderstorm Warning | LIX | Saint Tammany, Washington | 60 min |
| Nov 25, 9:30 AM CST | Severe Thunderstorm Warning | LIX | Plaquemines, Saint Bernard | 60 min |
Nearby
Severe Thunderstorm Warnings in Louisiana, 1986Every severe thunderstorm warning 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.