Alert archive / Louisiana / Tornado Warnings in 2017
Tornado Warning 74, NWS New Orleans, LA
NWS New Orleans, LA issued this tornado warning at May 30, 2017, 12:53 PM CDT for Lafourche Parish, Terrebonne Parish, Louisiana. It was in force for 24 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
- May 30, 2017, 12:53 PM CDT (17:53 UTC)
- Expired
- May 30, 2017, 1:17 PM CDT
- In force
- 24 min
- Issued by
- NWS New Orleans, LA
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Lafourche Parish, LA, Terrebonne Parish, LA
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 5.9 hours before the alert went out and 122 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
- 296 J/kg
- Mixed-layer CIN
- -26 J/kg
- Mixed-layer LCL
- 630 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 184 m²/s²
- 0-3 km storm-relative helicity
- 334 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
729
WFUS54 KLIX 301753
TORLIX
LAC057-109-301830-
/O.NEW.KLIX.TO.W.0074.170530T1753Z-170530T1830Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service New Orleans LA
1253 PM CDT TUE MAY 30 2017
The National Weather Service in New Orleans has issued a
* Tornado Warning for...
East central Terrebonne Parish in southeastern Louisiana...
Central Lafourche Parish in southeastern Louisiana...
* Until 130 PM CDT
* At 1253 PM CDT, a severe thunderstorm capable of producing a
tornado was located over Chauvin, or 12 miles southeast of Houma,
moving north at 10 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* This dangerous storm will be near...
Montegut around 125 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to an interior room on the lowest floor of a
sturdy building. Avoid windows. If you are outdoors, in a mobile
home, or in a vehicle, move to the closest substantial shelter and
protect yourself from flying debris.
&&
LAT...LON 2933 9052 2940 9071 2963 9066 2953 9037
TIME...MOT...LOC 1753Z 201DEG 8KT 2943 9059
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$2 follow-up statements
223
WWUS54 KLIX 301813
SVSLIX
Severe Weather Statement
National Weather Service New Orleans LA
113 PM CDT TUE MAY 30 2017
LAC057-109-301830-
/O.CON.KLIX.TO.W.0074.000000T0000Z-170530T1830Z/
Terrebonne LA-Lafourche LA-
113 PM CDT TUE MAY 30 2017
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 130 PM CDT FOR EAST
CENTRAL TERREBONNE AND CENTRAL LAFOURCHE PARISHES...
At 111 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Montegut, or 11 miles southeast of Houma, moving
north at 10 mph. The rotation has weakened but the structure of the
storm is still intact. Therefore, the tornado warning is still in
effect.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This tornadic thunderstorm will remain over mainly rural areas of
east central Terrebonne and central Lafourche Parishes.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 2933 9052 2940 9071 2963 9066 2953 9037
TIME...MOT...LOC 1811Z 201DEG 8KT 2947 9057
TORNADO...RADAR INDICATED
HAIL...0.00IN
$$327
WWUS54 KLIX 301817
SVSLIX
Severe Weather Statement
National Weather Service New Orleans LA
117 PM CDT TUE MAY 30 2017
LAC057-109-301827-
/O.CAN.KLIX.TO.W.0074.000000T0000Z-170530T1830Z/
Terrebonne LA-Lafourche LA-
117 PM CDT TUE MAY 30 2017
...THE TORNADO WARNING FOR EAST CENTRAL TERREBONNE AND CENTRAL
LAFOURCHE PARISHES IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore the warning has been cancelled.
LAT...LON 2933 9052 2940 9071 2963 9066 2953 9037
TIME...MOT...LOC 1816Z 201DEG 8KT 2948 9056
$$The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 29, 7:38 PM CDT | Special Weather Statement | LIX | Jefferson | 67 min |
| May 30, 3:04 AM CDT | Special Weather Statement | LIX | Jefferson | 41 min |
| May 30, 3:39 AM CDT | Special Marine Warning | LIX | 51 min | |
| May 30, 4:55 AM CDT | Special Weather Statement | LIX | Plaquemines | 35 min |
| May 30, 8:12 AM CDT | Special Weather Statement | LIX | Ascension, Livingston | 33 min |
| May 30, 8:39 AM CDT | Special Marine Warning | LIX | 66 min | |
| May 30, 9:28 AM CDT | Special Weather Statement | LIX | Saint John the Baptist | 62 min |
| May 30, 9:33 AM CDT | Special Marine Warning | LIX | 57 min | |
| May 30, 10:20 AM CDT | Special Weather Statement | LIX | Terrebonne | 25 min |
| May 30, 11:52 AM CDT | Special Weather Statement | LIX | Terrebonne | 53 min |
| May 30, 12:51 PM CDT | Special Weather Statement | LIX | Lafourche | 54 min |
| May 30, 1:02 PM CDT | Areal Flood Advisory | LIX | Assumption, Lafourche, Saint Charles, Terrebonne | 3 hr |
| May 30, 1:28 PM CDT | Special Weather Statement | LIX | Lafourche | 32 min |
| May 30, 1:36 PM CDT | Severe Thunderstorm Warning | LIX | Jefferson, Lafourche | 24 min |
| May 30, 2:16 PM CDT | Special Weather Statement | LIX | Jefferson | 29 min |
| May 30, 2:18 PM CDT | Special Marine Warning | LIX | 27 min | |
| May 30, 2:23 PM CDT | Tornado Warning | LIX | Jefferson, Lafourche | 17 min |
| May 30, 3:05 PM CDT | Special Marine Warning | LIX | 85 min | |
| May 30, 3:15 PM CDT | Severe Thunderstorm Warning | LIX | Jefferson, Lafourche | 30 min |
| May 30, 3:19 PM CDT | Special Marine Warning | LIX | 26 min | |
| May 30, 3:26 PM CDT | Tornado Warning | LIX | Jefferson, Lafourche | 34 min |
| May 30, 4:01 PM CDT | Tornado Warning | LIX | Plaquemines | 44 min |
| May 30, 4:03 PM CDT | Tornado Warning | LIX | Lafourche | 27 min |
| May 30, 4:09 PM CDT | Special Marine Warning | LIX | 51 min | |
| May 30, 4:27 PM CDT | Tornado Warning | LIX | Lafourche | 48 min |
| May 30, 4:42 PM CDT | Severe Thunderstorm Warning | LIX | Plaquemines | 63 min |
| May 30, 4:50 PM CDT | Special Marine Warning | LIX | 85 min | |
| May 30, 5:26 PM CDT | Special Marine Warning | LIX | 94 min | |
| May 30, 5:39 PM CDT | Special Marine Warning | LIX | 36 min | |
| May 30, 5:40 PM CDT | Tornado Warning | LIX | Jefferson | 23 min |
| May 30, 6:01 PM CDT | Special Weather Statement | LIX | Plaquemines | 59 min |
Nearby
Tornado Warnings in Louisiana, 2017Every tornado warning in 2017Tornadoes in 2017
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.