Alert archive / Louisiana / Tornado Warnings in 2017
Tornado Warning 91, NWS New Orleans, LA
NWS New Orleans, LA issued this tornado warning at Jun 21, 2017, 12:53 PM CDT for Livingston Parish, Saint John the Baptist Parish, Tangipahoa Parish, Louisiana. It was in force for 37 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
- Jun 21, 2017, 12:53 PM CDT (17:53 UTC)
- Expired
- Jun 21, 2017, 1:30 PM CDT
- In force
- 37 min
- Issued by
- NWS New Orleans, LA
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.0 in
Counties Livingston Parish, LA, Saint John the Baptist Parish, LA, Tangipahoa Parish, LA
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 21, 10:01 AM CDT | Tornado Watch | SPC | 9 hr |
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 5.9 hours before the alert went out and 73 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
- 262 J/kg
- Mixed-layer CIN
- -75 J/kg
- Mixed-layer LCL
- 465 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 485 m²/s²
- 0-3 km storm-relative helicity
- 506 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 5.3
The text
As transmitted.
623
WFUS54 KLIX 211753
TORLIX
LAC063-095-105-211830-
/O.NEW.KLIX.TO.W.0091.170621T1753Z-170621T1830Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service New Orleans LA
1253 PM CDT WED JUN 21 2017
The National Weather Service in New Orleans has issued a
* Tornado Warning for...
Northeastern St. John The Baptist Parish in southeastern
Louisiana...
Southeastern Livingston Parish in southeastern Louisiana...
South central Tangipahoa Parish in southeastern Louisiana...
* Until 130 PM CDT
* At 1253 PM CDT, A tornado was reported 10 miles northeast of
Laplace, moving northwest at 25 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 tornadic thunderstorm will remain over mainly rural areas of
northeastern St. John The Baptist...southeastern Livingston and
south central Tangipahoa Parishes, including the following
locations: Killian.
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.
To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
New Orleans.
&&
LAT...LON 3023 9034 3018 9039 3016 9038 3014 9041
3021 9051 3021 9048 3027 9045 3031 9047
3028 9054 3023 9054 3023 9055 3029 9063
3041 9047
TIME...MOT...LOC 1753Z 137DEG 23KT 3021 9039
TORNADO...RADAR INDICATED
HAIL...0.00IN
$$
MJH1 follow-up statement
578
WWUS54 KLIX 211758
SVSLIX
Severe Weather Statement
National Weather Service New Orleans LA
1258 PM CDT WED JUN 21 2017
LAC063-095-105-211830-
/O.CON.KLIX.TO.W.0091.000000T0000Z-170621T1830Z/
St. John The Baptist LA-Livingston LA-Tangipahoa LA-
1258 PM CDT WED JUN 21 2017
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 130 PM CDT FOR
NORTHEASTERN ST. JOHN THE BAPTIST...SOUTHEASTERN LIVINGSTON AND SOUTH
CENTRAL TANGIPAHOA PARISHES...
At 1258 PM CDT, a severe thunderstorm capable of producing a tornado
was located 11 miles north of Laplace, moving northwest at 25 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
Locations impacted include...
Killian.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
If a tornado or other severe weather is spotted, report it to the
National Weather Service or your local nearest law enforcement agency
who will send your report. This act may save lives of others in the
path of dangerous weather.
&&
LAT...LON 3023 9034 3018 9039 3016 9038 3014 9041
3021 9051 3021 9048 3027 9045 3031 9047
3028 9054 3023 9054 3023 9055 3029 9063
3041 9047
TIME...MOT...LOC 1758Z 137DEG 23KT 3023 9042
TORNADO...RADAR INDICATED
HAIL...0.00IN
$$
MJHThe office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 12:56 AM CDT | Special Marine Warning | LIX | 34 min | |
| Jun 21, 7:31 AM CDT | Tornado Warning | LIX | Saint Tammany | 29 min |
| Jun 21, 8:05 AM CDT | Special Marine Warning | LIX | 25 min | |
| Jun 21, 11:23 AM CDT | Special Marine Warning | LIX | 22 min | |
| Jun 21, 11:25 AM CDT | Small Craft Advisory | LIX | 52 hr | |
| Jun 21, 11:33 AM CDT | Tornado Warning | LIX | Orleans | 13 min |
| Jun 21, 11:40 AM CDT | Special Marine Warning | LIX | 50 min | |
| Jun 21, 11:56 AM CDT | Areal Flood Advisory | LIX | Jefferson, Orleans, Plaquemines, Saint Bernard | 2 hr |
| Jun 21, 12:53 PM CDT | Special Marine Warning | LIX | 37 min | |
| Jun 21, 1:26 PM CDT | Tornado Warning | LIX | Livingston | 19 min |
| Jun 21, 1:33 PM CDT | Special Weather Statement | LIX | Saint John the Baptist | 57 min |
| Jun 21, 2:11 PM CDT | Special Marine Warning | LIX | 19 min | |
| Jun 21, 2:38 PM CDT | Special Marine Warning | LIX | 37 min | |
| Jun 21, 3:06 PM CDT | Special Marine Warning | LIX | 24 min | |
| Jun 21, 3:21 PM CDT | Severe Thunderstorm Warning | LIX | Orleans, Saint Tammany | 54 min |
| Jun 21, 4:00 PM CDT | Coastal Flood Advisory | LIX | Saint Bernard, Saint John the Baptist | 48 hr |
| Jun 21, 4:44 PM CDT | Small Craft Advisory | LIX | 47 hr |
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.