Alert archive / Louisiana / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 141, NWS New Orleans, LA
NWS New Orleans, LA issued this severe thunderstorm warning at Oct 27, 2021, 5:19 PM CDT for Pearl River County, Mississippi; Saint Tammany Parish, Washington Parish, Louisiana. It was in force for 26 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Oct 27, 2021, 5:19 PM CDT (22:19 UTC)
- Expired
- Oct 27, 2021, 5:45 PM CDT
- In force
- 26 min
- Issued by
- NWS New Orleans, LA
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Saint Tammany Parish, LA, Washington Parish, LA, Pearl River County, MS
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Oct 27, 1:53 PM CDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 10.3 hours before the alert went out and 45 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
- 1792 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 186 m²/s²
- 0-3 km storm-relative helicity
- 274 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
763 WUUS54 KLIX 272219 SVRLIX LAC103-117-MSC109-272245- /O.NEW.KLIX.SV.W.0141.211027T2219Z-211027T2245Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service New Orleans LA 519 PM CDT Wed Oct 27 2021 The National Weather Service in New Orleans has issued a * Severe Thunderstorm Warning for... Northwestern St. Tammany Parish in southeastern Louisiana... Southeastern Washington Parish in southeastern Louisiana... West central Pearl River County in southern Mississippi... * Until 545 PM CDT. * At 518 PM CDT, a severe thunderstorm was located near Abita Springs, or 9 miles northeast of Covington, moving northeast at 35 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Bogalusa, Covington, Abita Springs, Sun, Crossroads and Bush. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Tornado Watch remains in effect until 1000 PM CDT for southeastern Louisiana...and southern Mississippi. For your protection move to an interior room on the lowest floor of a building. This thunderstorm is capable of producing destructive straight line winds and possibly a tornado. Move quickly to a safe shelter such as an interior room, a bathroom, closet or basement. Torrential rainfall is occurring with this storm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. A Tornado Watch remains in effect until 1000 PM CDT for southeastern Louisiana...and southern Mississippi. && LAT...LON 3044 8997 3050 9011 3088 8996 3076 8968 TIME...MOT...LOC 2218Z 207DEG 32KT 3056 8999 TORNADO...POSSIBLE HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...<.75 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ TD
1 follow-up statement
000
WWUS54 KLIX 272237
SVSLIX
Severe Weather Statement
National Weather Service New Orleans LA
537 PM CDT Wed Oct 27 2021
LAC103-117-MSC109-272246-
/O.EXP.KLIX.SV.W.0141.000000T0000Z-211027T2245Z/
St. Tammany LA-Washington LA-Pearl River MS-
537 PM CDT Wed Oct 27 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN ST. TAMMANY...
SOUTHEASTERN WASHINGTON PARISHES IN SOUTHEASTERN LOUISIANA AND WEST
CENTRAL PEARL RIVER COUNTIES WILL EXPIRE AT 545 PM CDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However gusty
winds are still possible with this thunderstorm.
A Tornado Watch remains in effect until 1000 PM CDT for southeastern
Louisiana...and southern Mississippi.
LAT...LON 3044 8997 3050 9011 3088 8996 3076 8968
TIME...MOT...LOC 2236Z 207DEG 32KT 3070 8991
$$
TDThe office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 27, 2:32 PM CDT | Severe Thunderstorm Warning | LIX | Wilkinson | 58 min |
| Oct 27, 3:04 PM CDT | Tornado Warning | LIX | Wilkinson | 26 min |
| Oct 27, 3:10 PM CDT | Severe Thunderstorm Warning | LIX | Amite, Wilkinson | 50 min |
| Oct 27, 3:19 PM CDT | Tornado Warning | LIX | Amite, Wilkinson | 26 min |
| Oct 27, 3:56 PM CDT | Severe Thunderstorm Warning | LIX | Amite, Pike, Wilkinson | 49 min |
| Oct 27, 4:53 PM CDT | Special Weather Statement | LIX | Pike, Walthall | 37 min |
| Oct 27, 6:19 PM CDT | Flash Flood Warning | LIX | Pearl River, Walthall | 2 hr |
| Oct 27, 6:49 PM CDT | Severe Thunderstorm Warning | LIX | Hancock, Pearl River | 41 min |
| Oct 27, 6:52 PM CDT | Tornado Warning | LIX | Hancock, Pearl River | 12 min |
| Oct 27, 6:53 PM CDT | Areal Flood Advisory | LIX | Hancock, Pearl River | 3 hr |
| Oct 27, 1:47 PM CDT | Tornado Warning | LIX | East Baton Rouge, East Feliciana | 43 min |
| Oct 27, 1:48 PM CDT | Tornado Warning | LIX | East Feliciana, West Feliciana | 42 min |
| Oct 27, 1:51 PM CDT | Special Marine Warning | LIX | 41 min | |
| Oct 27, 2:03 PM CDT | Tornado Warning | LIX | Livingston, Tangipahoa | 42 min |
| Oct 27, 2:16 PM CDT | Severe Thunderstorm Warning | LIX | Iberville, Pointe Coupee, West Feliciana | 59 min |
| Oct 27, 3:17 PM CDT | Special Marine Warning | LIX | 28 min | |
| Oct 27, 3:22 PM CDT | Special Marine Warning | LIX | 53 min | |
| Oct 27, 4:06 PM CDT | Severe Thunderstorm Warning | LIX | Ascension, Assumption, East Baton Rouge, Iberville, Livingston, Saint James and 1 more | 39 min |
| Oct 27, 4:46 PM CDT | Severe Thunderstorm Warning | LIX | Ascension, Assumption, East Baton Rouge, Iberville, Lafourche, Livingston and 4 more | 44 min |
| Oct 27, 4:54 PM CDT | Areal Flood Advisory | LIX | Livingston, Saint Tammany, Tangipahoa, Washington | 3 hr |
| Oct 27, 4:59 PM CDT | Special Marine Warning | LIX | 91 min | |
| Oct 27, 5:22 PM CDT | Severe Thunderstorm Warning | LIX | Ascension, Assumption, Lafourche, Livingston, Saint Charles, Saint James and 2 more | 38 min |
| Oct 27, 5:26 PM CDT | Special Marine Warning | LIX | 94 min | |
| Oct 27, 5:28 PM CDT | Flash Flood Warning | LIX | Saint Tammany, Tangipahoa, Washington | 3 hr |
| Oct 27, 5:56 PM CDT | Severe Thunderstorm Warning | LIX | Jefferson, Lafourche, Orleans, Plaquemines, Saint Bernard, Saint Charles and 2 more | 49 min |
| Oct 27, 6:10 PM CDT | Severe Thunderstorm Warning | LIX | Saint Tammany | 50 min |
| Oct 27, 6:23 PM CDT | Special Marine Warning | LIX | 97 min | |
| Oct 27, 6:28 PM CDT | Tornado Warning | LIX | Jefferson, Lafourche | 32 min |
| Oct 27, 6:37 PM CDT | Special Marine Warning | LIX | 83 min | |
| Oct 27, 6:47 PM CDT | Areal Flood Advisory | LIX | Jefferson, Orleans, Saint Bernard, Saint Charles | 109 min |
| Oct 27, 6:49 PM CDT | Severe Thunderstorm Warning | LIX | Jefferson, Lafourche, Orleans, Plaquemines, Saint Bernard | 41 min |
Nearby
Severe Thunderstorm Warnings in Louisiana, 2021Severe Thunderstorm Warnings in Mississippi, 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; the sounding from the Mesonet's radiosonde archive.