Alert archive / Louisiana / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 30, NWS New Orleans, LA
NWS New Orleans, LA issued this severe thunderstorm warning at Apr 8, 2021, 2:24 AM CDT for Saint Tammany Parish, Louisiana. It was in force for 51 min. 6 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Apr 8, 2021, 2:24 AM CDT (07:24 UTC)
- Expired
- Apr 8, 2021, 3:15 AM CDT
- In force
- 51 min
- Issued by
- NWS New Orleans, LA
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Saint Tammany Parish, LA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 8, 2:29 AM CDT | TSTM WND DMG | 2 Nnw Madisonville, LA | CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 2 NNW MADISONVILLE. SCATTERED LIGHT TREE DEBRIS ALONG LA HWY 22. A FEW SNAPPED LIMBS. DIAMETER APPEARS TO BE AROUND 4 INCHES ON SOME OF THE BIGGEST. |
| Apr 8, 2:29 AM CDT | TSTM WND DMG | 2 Nnw Madisonville, LA | SCATTERED LIGHT TREE DEBRIS ALONG LA HWY 22. A FEW SNAPPED LIMBS. DIAMETER APPEARS TO BE AROUND 4 INCHES ON SOME OF THE BIGGEST. |
| Apr 8, 2:30 AM CDT | TSTM WND DMG | 1 W Mandeville, LA | TREES SNAPPED WITHIN A MILE WEST OF CAUSEWAY BRIDGE. |
| Apr 8, 2:30 AM CDT | TSTM WND DMG | 2 Nnw Madisonville, LA | ALMOST ALL BIG LIMBS HAVE ALREADY BEEN PICKED UP BUT A LOT OF LIGHT TREE DEBRIS IN MADISONVILLE OAKS NEIGHBORHOOD. |
| Apr 8, 2:33 AM CDT | TSTM WND DMG | 2 Ne Madisonville, LA | AROUND A DOZEN TREES DOWN IN FAIRVIEW-RIVERSIDE STATE PARK. ALL TREES BLOWN DOWN TO THE E-NE. (THIS IS DAMAGE FROM THE MORNING OF APRIL 8TH). |
| Apr 8, 2:54 AM CDT | TSTM WND DMG | 2 N Lacombe, LA | SCATTERED LIGHT TREE DEBRIS. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 00:00Z, 7.4 hours before the alert went out and 18 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
- 1186 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 722 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 147 m²/s²
- 0-3 km storm-relative helicity
- 175 m²/s²
- Significant tornado parameter
- 0.9
- Supercell composite
- 5.8
The text
As transmitted.
892
WUUS54 KLIX 080724
SVRLIX
LAC103-080815-
/O.NEW.KLIX.SV.W.0030.210408T0724Z-210408T0815Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service New Orleans LA
224 AM CDT Thu Apr 8 2021
The National Weather Service in New Orleans has issued a
* Severe Thunderstorm Warning for...
Southern St. Tammany Parish in southeastern Louisiana...
* Until 315 AM CDT.
* At 224 AM CDT, a severe thunderstorm was located over Madisonville,
or near Covington, moving east at 40 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
Slidell, Covington, Pearl River, Abita Springs, Madisonville,
Lacombe and Slidell Airport.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3040 8967 3036 8966 3034 8963 3028 8963
3017 8967 3018 8975 3021 8978 3022 8985
3025 8987 3026 8998 3030 8999 3037 9010
3039 9021 3037 9024 3052 9024
TIME...MOT...LOC 0724Z 288DEG 34KT 3042 9020
HAIL...1.00IN
WIND...60MPH
$$The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 7, 9:42 PM CDT | Severe Thunderstorm Warning | LIX | Pointe Coupee, West Feliciana | 78 min |
| Apr 7, 10:22 PM CDT | Tornado Warning | LIX | West Feliciana | 53 min |
| Apr 7, 10:50 PM CDT | Severe Thunderstorm Warning | LIX | East Feliciana, West Feliciana | 70 min |
| Apr 8, 12:08 AM CDT | Severe Thunderstorm Warning | LIX | East Feliciana, Saint Helena | 67 min |
| Apr 8, 12:25 AM CDT | Severe Thunderstorm Warning | LIX | East Baton Rouge, East Feliciana, Pointe Coupee, Saint Helena, West Baton Rouge, West Feliciana | 34 min |
| Apr 8, 12:39 AM CDT | Severe Thunderstorm Warning | LIX | Saint Helena, Tangipahoa, Washington | 66 min |
| Apr 8, 1:05 AM CDT | Severe Thunderstorm Warning | LIX | Saint Tammany, Tangipahoa, Washington | 55 min |
| Apr 8, 1:12 AM CDT | Tornado Warning | LIX | Tangipahoa, Washington | 33 min |
| Apr 8, 1:20 AM CDT | Tornado Warning | LIX | Livingston, Saint Helena | 25 min |
| Apr 8, 1:51 AM CDT | Severe Thunderstorm Warning | LIX | Livingston, Saint John the Baptist, Tangipahoa | 39 min |
| Apr 8, 2:00 AM CDT | Special Marine Warning | LIX | 30 min | |
| Apr 8, 2:04 AM CDT | Special Weather Statement | LIX | Saint Tammany | 56 min |
| Apr 8, 2:14 AM CDT | Special Marine Warning | LIX | 61 min | |
| Apr 8, 2:30 AM CDT | Tornado Warning | LIX | Saint Tammany | 30 min |
| Apr 8, 2:54 AM CDT | Special Weather Statement | LIX | Orleans, Saint Charles | 66 min |
| Apr 8, 2:56 AM CDT | Tornado Warning | LIX | Saint Tammany | 34 min |
| Apr 8, 3:03 AM CDT | Tornado Warning | LIX | Saint Charles, Saint John the Baptist | 14 min |
| Apr 8, 3:28 AM CDT | Special Marine Warning | LIX | 62 min | |
| Apr 8, 3:42 AM CDT | Flash Flood Warning | LIX | Jefferson, Orleans, Saint Charles | 5 hr |
| Apr 8, 4:00 AM CDT | Tornado Warning | LIX | Jefferson | 12 min |
| Apr 8, 4:15 AM CDT | Special Weather Statement | LIX | Jefferson, Lafourche | 60 min |
| Apr 8, 4:22 AM CDT | Tornado Warning | LIX | Jefferson | 23 min |
| Apr 8, 4:31 AM CDT | Special Marine Warning | LIX | 89 min | |
| Apr 8, 5:14 AM CDT | Special Weather Statement | LIX | Jefferson, Plaquemines, Terrebonne | 61 min |
| Apr 8, 5:19 AM CDT | Special Marine Warning | LIX | 56 min | |
| Apr 8, 5:45 AM CDT | Special Marine Warning | LIX | 2 hr | |
| Apr 8, 6:11 AM CDT | Severe Thunderstorm Warning | LIX | Plaquemines | 34 min |
| Apr 8, 6:15 AM CDT | Special Marine Warning | LIX | 2 hr | |
| Apr 8, 7:42 AM CDT | Special Marine Warning | LIX | 63 min | |
| Apr 8, 9:55 AM CDT | River Flood Warning | LIX | Tangipahoa | 12 days |
| Apr 8, 9:58 AM CDT | River Flood Warning | LIX | Saint Tammany | 4 days |
| Apr 8, 10:10 AM CDT | River Flood Warning | LIX | Ascension | 12 days |
Nearby
Severe Thunderstorm Warnings in Louisiana, 2021Every severe thunderstorm warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.