Alert archive / Louisiana / Tornado Warnings in 2017
Tornado Warning 1, NWS New Orleans, LA
NWS New Orleans, LA issued this tornado warning at Jan 2, 2017, 10:30 AM CST for Saint John the Baptist Parish, Tangipahoa Parish, Louisiana. It was in force for 30 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
- Jan 2, 2017, 10:30 AM CST (16:30 UTC)
- Expired
- Jan 2, 2017, 11:00 AM CST
- In force
- 30 min
- Issued by
- NWS New Orleans, LA
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.0 in
Counties Saint John the Baptist Parish, LA, Tangipahoa Parish, LA
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 4.5 hours before the alert went out and 62 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
- 1261 J/kg
- Mixed-layer CIN
- -29 J/kg
- Mixed-layer LCL
- 571 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 322 m²/s²
- 0-3 km storm-relative helicity
- 423 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 4.0
The text
As transmitted.
364
WFUS54 KLIX 021630
TORLIX
LAC095-105-021700-
/O.NEW.KLIX.TO.W.0001.170102T1630Z-170102T1700Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service New Orleans LA
1030 AM CST MON JAN 2 2017
The National Weather Service in New Orleans has issued a
* Tornado Warning for...
Southeastern Tangipahoa Parish in southeastern Louisiana...
Northeastern St. John The Baptist Parish in southeastern
Louisiana...
* Until 1100 AM CST
* At 1029 AM CST, a severe thunderstorm capable of producing a
tornado was located 10 miles north of Laplace, moving northeast at
30 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 move over Interstate 55 between
Ponchatoula and Pass Manchac and rural areas of southeastern
Tangipahoa and northeastern St. John The Baptist Parishes.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Motorists should not take shelter under highway overpasses. If you
cannot safely drive away from the tornado, as a last resort, either
park your vehicle and stay put, or abandon your vehicle and lie down
in a low lying area and protect yourself from flying debris.
&&
LAT...LON 3054 9032 3048 9024 3037 9024 3038 9021
3036 9021 3024 9033 3018 9044 3022 9049
3027 9045 3029 9046
TIME...MOT...LOC 1629Z 221DEG 25KT 3022 9044
TORNADO...RADAR INDICATED
HAIL...0.00IN
$$
24/RR1 follow-up statement
937
WWUS54 KLIX 021641
SVSLIX
Severe Weather Statement
National Weather Service New Orleans LA
1041 AM CST MON JAN 2 2017
LAC095-021650-
/O.CAN.KLIX.TO.W.0001.000000T0000Z-170102T1700Z/
St. John The Baptist LA-
1041 AM CST MON JAN 2 2017
...THE TORNADO WARNING FOR NORTHEASTERN ST. JOHN THE BAPTIST PARISH
IS CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the warning has been cancelled.
LAT...LON 3048 9024 3037 9025 3029 9034 3030 9035
3028 9037 3028 9041 3029 9040 3046 9034
3053 9031
TIME...MOT...LOC 1640Z 221DEG 25KT 3028 9038
$$
LAC105-021700-
/O.CON.KLIX.TO.W.0001.000000T0000Z-170102T1700Z/
Tangipahoa LA-
1041 AM CST MON JAN 2 2017
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1100 AM CST FOR
SOUTHEASTERN TANGIPAHOA PARISH...
At 1040 AM CST, a severe thunderstorm capable of producing a tornado
was located 11 miles south of Ponchatoula, or 15 miles north of
Laplace, moving northeast at 30 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
southeastern Tangipahoa Parish.
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 3048 9024 3037 9025 3029 9034 3030 9035
3028 9037 3028 9041 3029 9040 3046 9034
3053 9031
TIME...MOT...LOC 1640Z 221DEG 25KT 3028 9038
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
24/RRThe office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 2, 3:30 AM CST | Small Craft Advisory | LIX | 15 hr | |
| Jan 2, 9:11 AM CST | Special Marine Warning | LIX | 64 min | |
| Jan 2, 9:24 AM CST | Special Marine Warning | LIX | 36 min | |
| Jan 2, 10:03 AM CST | Areal Flood Advisory | LIX | Saint Tammany | 117 min |
| Jan 2, 10:15 AM CST | Special Marine Warning | LIX | 30 min | |
| Jan 2, 10:16 AM CST | Special Marine Warning | LIX | 29 min | |
| Jan 2, 10:21 AM CST | Special Weather Statement | LIX | Plaquemines | 54 min |
| Jan 2, 10:27 AM CST | Special Weather Statement | LIX | Saint John the Baptist | 48 min |
| Jan 2, 10:58 AM CST | Tornado Warning | LIX | Saint Tammany, Tangipahoa | 16 min |
| Jan 2, 11:22 AM CST | Special Marine Warning | LIX | 83 min | |
| Jan 2, 11:35 AM CST | Special Weather Statement | LIX | Pointe Coupee, West Feliciana | 115 min |
| Jan 2, 12:14 PM CST | Severe Thunderstorm Warning | LIX | Saint Tammany, Washington | 46 min |
| Jan 2, 12:15 PM CST | Severe Thunderstorm Warning | LIX | East Feliciana | 45 min |
| Jan 2, 12:41 PM CST | Severe Thunderstorm Warning | LIX | West Feliciana | 34 min |
| Jan 2, 12:51 PM CST | Special Marine Warning | LIX | 54 min | |
| Jan 2, 12:55 PM CST | Special Weather Statement | LIX | East Baton Rouge, East Feliciana, Iberville, Saint Helena, West Baton Rouge | 95 min |
| Jan 2, 1:20 PM CST | Severe Thunderstorm Warning | LIX | Ascension, East Baton Rouge, East Feliciana, Iberville, Livingston, Saint Helena and 3 more | 55 min |
| Jan 2, 1:52 PM CST | Severe Thunderstorm Warning | LIX | Ascension, Livingston, Saint Helena, Saint John the Baptist, Saint Tammany, Tangipahoa and 1 more | 53 min |
| Jan 2, 1:55 PM CST | Special Marine Warning | LIX | 35 min | |
| Jan 2, 2:35 PM CST | Severe Thunderstorm Warning | LIX | Orleans, Saint John the Baptist, Saint Tammany, Tangipahoa, Washington | 55 min |
| Jan 2, 2:38 PM CST | Special Weather Statement | LIX | Ascension, Assumption, Saint James, Saint John the Baptist, Terrebonne | 67 min |
| Jan 2, 3:31 PM CST | Special Marine Warning | LIX | 89 min | |
| Jan 2, 3:37 PM CST | Special Weather Statement | LIX | Jefferson, Lafourche, Orleans, Saint Charles, Terrebonne | 113 min |
| Jan 2, 4:14 PM CST | River Flood Warning | LIX | Saint Tammany | 34 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.