Alert archive / Louisiana / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 138, NWS New Orleans, LA
NWS New Orleans, LA issued this severe thunderstorm warning at Oct 27, 2021, 3:56 PM CDT for 6 parishes in Louisiana; Amite County, Pike County, Wilkinson County, Mississippi. It was in force for 49 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, 3:56 PM CDT (20:56 UTC)
- Expired
- Oct 27, 2021, 4:45 PM CDT
- In force
- 49 min
- Issued by
- NWS New Orleans, LA
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties East Baton Rouge Parish, LA, East Feliciana Parish, LA, Iberville Parish, LA, Livingston Parish, LA, Saint Helena Parish, LA, West Baton Rouge Parish, LA, Amite County, MS, Pike County, MS, Wilkinson 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, 8.9 hours before the alert went out and 143 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.
276
WUUS54 KLIX 272056
SVRLIX
LAC033-037-047-063-091-121-MSC005-113-157-272145-
/O.NEW.KLIX.SV.W.0138.211027T2056Z-211027T2145Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service New Orleans LA
356 PM CDT Wed Oct 27 2021
The National Weather Service in New Orleans has issued a
* Severe Thunderstorm Warning for...
West Baton Rouge Parish in southeastern Louisiana...
St. Helena Parish in southeastern Louisiana...
Northwestern Livingston Parish in southeastern Louisiana...
East Feliciana Parish in southeastern Louisiana...
North central Iberville Parish in southeastern Louisiana...
East Baton Rouge Parish in southeastern Louisiana...
Northwestern Pike County in southern Mississippi...
Southeastern Wilkinson County in southern Mississippi...
Amite County in southern Mississippi...
* Until 445 PM CDT.
* At 355 PM CDT, severe thunderstorms were located along a line
extending from 7 miles southeast of Garden City to near Gloster to
near Jackson to near Port Allen, moving northeast at 40 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Baton Rouge, Zachary, Baker, Mccomb, Denham Springs, Port Allen,
Jackson, Clinton, Liberty, Greensburg, Oak Hills Place, Addis,
Brusly, Summit, Centreville, Slaughter, Gloster, Grosse Tete,
Wilson and Norwood.
This includes the following Interstates...
Interstate 10 in Louisiana between mile markers 141 and 163.
Interstate 12 between mile markers 1 and 8.
Interstate 55 in Mississippi between mile markers 14 and 24.
Interstate 110 in Louisiana between mile markers 1 and 8.
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.
&&
LAT...LON 3135 9043 3114 9050 3072 9072 3056 9086
3035 9111 3032 9147 3117 9108 3133 9108
3135 9102 3133 9099 3135 9098
TIME...MOT...LOC 2055Z 238DEG 35KT 3132 9101 3119 9095 3081 9115 3047
9125
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
JRK1 follow-up statement
778
WWUS54 KLIX 272123
SVSLIX
Severe Weather Statement
National Weather Service New Orleans LA
423 PM CDT Wed Oct 27 2021
LAC047-MSC157-272132-
/O.CAN.KLIX.SV.W.0138.000000T0000Z-211027T2145Z/
Iberville LA-Wilkinson MS-
423 PM CDT Wed Oct 27 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL IBERVILLE PARISH
IN SOUTHEASTERN LOUISIANA AND SOUTHEASTERN WILKINSON COUNTIES IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 1000 PM CDT for southeastern
Louisiana...and southern Mississippi.
LAT...LON 3135 9043 3110 9052 3066 9077 3035 9111
3033 9131 3035 9133 3063 9105 3099 9090
3115 9088 3128 9083 3135 9084
TIME...MOT...LOC 2122Z 251DEG 36KT 3139 9073 3126 9067 3086 9082 3054
9094
$$
LAC033-037-063-091-121-MSC005-113-272145-
/O.CON.KLIX.SV.W.0138.000000T0000Z-211027T2145Z/
West Baton Rouge LA-St. Helena LA-Livingston LA-East Feliciana LA-
East Baton Rouge LA-Pike MS-Amite MS-
423 PM CDT Wed Oct 27 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM CDT
FOR SOUTHEASTERN WEST BATON ROUGE...ST. HELENA...NORTHWESTERN
LIVINGSTON...EASTERN EAST FELICIANA AND CENTRAL EAST BATON ROUGE
PARISHES...NORTHWESTERN PIKE AND AMITE COUNTIES...
At 422 PM CDT, severe thunderstorms were located along a line
extending from Little Springs to near Smithdale to near Darlington to
near Watson, moving east at 40 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Baton Rouge, Mccomb, Denham Springs, Port Allen, Liberty, Greensburg,
Oak Hills Place, Addis, Brusly, Summit, Smithdale, Westminster,
Merrydale, Inniswold, Watson, Darlington, Gillsberg, Pride, Gardere
and Brownfields.
This includes the following Interstates...
Interstate 10 in Louisiana between mile markers 153 and 163.
Interstate 12 between mile markers 1 and 7.
Interstate 55 in Mississippi between mile markers 14 and 24.
Interstate 110 in Louisiana between mile markers 1 and 6.
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.
Squall lines can produce brief tornadoes and more widespread wind
damage. Although a tornado is not immediately likely, it is best to
move to an interior room on the lowest floor of a building. These
storms may cause serious injury and significant property damage.
&&
LAT...LON 3135 9043 3110 9052 3066 9077 3035 9111
3033 9131 3035 9133 3063 9105 3099 9090
3115 9088 3128 9083 3135 9084
TIME...MOT...LOC 2122Z 251DEG 36KT 3139 9073 3126 9067 3086 9082 3054
9094
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
JRKThe office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| 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, 3:10 PM CDT | Severe Thunderstorm Warning | LIX | East Baton Rouge, East Feliciana, Iberville, Pointe Coupee, West Baton Rouge, West Feliciana | 50 min |
| Oct 27, 3:17 PM CDT | Special Marine Warning | LIX | 28 min | |
| Oct 27, 3:19 PM CDT | Tornado Warning | LIX | East Feliciana, West Feliciana | 26 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, 5:19 PM CDT | Severe Thunderstorm Warning | LIX | Saint Tammany, Washington | 26 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, 6:19 PM CDT | Flash Flood Warning | LIX | Saint Tammany, Washington | 2 hr |
| 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 |
| Oct 27, 6:53 PM CDT | Areal Flood Advisory | LIX | Saint Tammany | 3 hr |
| 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, 4:53 PM CDT | Special Weather Statement | LIX | Pike, Walthall | 37 min |
| 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 |
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.