Alert archive / Louisiana / Tornado Warnings in 2018

Tornado Warning 28, NWS New Orleans, LA

November 1, 2018Saint Tammany Parish, Louisiana; Pearl River County, Mississippi

NWS New Orleans, LA issued this tornado warning at Nov 1, 2018, 4:27 AM CDT for Saint Tammany Parish, Louisiana; Pearl River County, Mississippi. It was in force for 15 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
Nov 1, 2018, 4:27 AM CDT (09:27 UTC)
Expired
Nov 1, 2018, 4:42 AM CDT
In force
15 min
Issued by
NWS New Orleans, LA
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.0 in

Counties Saint Tammany 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.

IssuedProductOfficeLasted
Oct 31, 11:07 PM CDTTornado WatchSPC9 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 9.5 hours before the alert went out and 28 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.

Skew-T log-pSkew-T log-p diagram, Slidell Radar S, LA at 00:00Z on 2018-11-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 90 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 00:00Z on 2018-11-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 155 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
90 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
957 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
155 m²/s²
0-3 km storm-relative helicity
214 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.4

Open this sounding in Storm Lab

The text

As transmitted.

962 
WFUS54 KLIX 010927
TORLIX
LAC103-MSC109-011000-
/O.NEW.KLIX.TO.W.0028.181101T0927Z-181101T1000Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service New Orleans LA
427 AM CDT THU NOV 1 2018

The National Weather Service in New Orleans has issued a

* Tornado Warning for...
  Central St. Tammany Parish in southeastern Louisiana...
  Southwestern Pearl River County in southern Mississippi...

* Until 500 AM CDT.
    
* At 427 AM CDT, a severe thunderstorm capable of producing a tornado
  was located 8 miles east of Abita Springs, or 12 miles west of
  Picayune, moving northeast 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 dangerous storm will be near...
  Picayune around 500 AM 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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

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 3050 8960 3050 8964 3048 8965 3038 8990
      3045 8997 3068 8980
TIME...MOT...LOC 0927Z 226DEG 23KT 3047 8988 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

32
1 follow-up statement
376 
WWUS54 KLIX 010942
SVSLIX

Severe Weather Statement
National Weather Service New Orleans LA
442 AM CDT THU NOV 1 2018

LAC103-MSC109-010951-
/O.CAN.KLIX.TO.W.0028.000000T0000Z-181101T1000Z/
St. Tammany LA-Pearl River MS-
442 AM CDT THU NOV 1 2018

...THE TORNADO WARNING FOR CENTRAL ST. TAMMANY PARISH IN SOUTHEASTERN
LOUISIANA AND SOUTHWESTERN PEARL RIVER COUNTIES IS CANCELLED...
    
The tornado threat has diminished and the Tornado Warning has been 
cancelled. However, damaging winds remain likely and a Severe 
Thunderstorm Warning remains in effect for the area.  

A Tornado Watch remains in effect until 700 AM CDT for southeastern 
Louisiana...and southern Mississippi.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
New Orleans.


LAT...LON 3050 8960 3050 8964 3048 8965 3038 8990
      3045 8997 3068 8980
TIME...MOT...LOC 0939Z 226DEG 23KT 3054 8980 

$$

32

The office that day

Everything else NWS New Orleans, LA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Nov 1, 1:25 AM CDTSpecial Marine WarningLIX20 min
Nov 1, 1:31 AM CDTSevere Thunderstorm WarningLIXPointe Coupee, West Feliciana59 min
Nov 1, 1:49 AM CDTSpecial Marine WarningLIX56 min
Nov 1, 1:53 AM CDTSpecial Weather StatementLIXEast Feliciana, Pointe Coupee, West Baton Rouge, West Feliciana52 min
Nov 1, 2:32 AM CDTSpecial Weather StatementLIXEast Baton Rouge, East Feliciana, Iberville, Saint Helena, West Baton Rouge28 min
Nov 1, 2:46 AM CDTSpecial Marine WarningLIX59 min
Nov 1, 2:56 AM CDTSpecial Weather StatementLIXSaint John the Baptist49 min
Nov 1, 2:56 AM CDTSevere Thunderstorm WarningLIXWashington34 min
Nov 1, 3:05 AM CDTSevere Thunderstorm WarningLIXEast Baton Rouge, East Feliciana, Livingston, Saint Helena, Tangipahoa25 min
Nov 1, 3:14 AM CDTSpecial Marine WarningLIX46 min
Nov 1, 3:27 AM CDTSevere Thunderstorm WarningLIXLivingston, Saint Helena, Tangipahoa33 min
Nov 1, 3:31 AM CDTSpecial Weather StatementLIXAscension, Assumption, Livingston, Saint James, Saint John the Baptist29 min
Nov 1, 3:34 AM CDTSpecial Weather StatementLIXTangipahoa, Washington26 min
Nov 1, 3:38 AM CDTTornado WarningLIXWashington37 min
Nov 1, 3:48 AM CDTSpecial Marine WarningLIX57 min
Nov 1, 3:55 AM CDTSevere Thunderstorm WarningLIXLivingston, Saint John the Baptist, Saint Tammany, Tangipahoa35 min
Nov 1, 3:58 AM CDTSevere Thunderstorm WarningLIXSaint Tammany, Tangipahoa, Washington32 min
Nov 1, 4:03 AM CDTSpecial Marine WarningLIX27 min
Nov 1, 4:05 AM CDTSpecial Weather StatementLIXSaint Charles, Saint James, Saint John the Baptist25 min
Nov 1, 4:11 AM CDTSevere Thunderstorm WarningLIXLafourche34 min
Nov 1, 4:15 AM CDTSevere Thunderstorm WarningLIXAssumption, Lafourche, Terrebonne30 min
Nov 1, 4:22 AM CDTSevere Thunderstorm WarningLIXSaint Tammany, Washington38 min
Nov 1, 4:24 AM CDTSpecial Marine WarningLIX66 min
Nov 1, 4:25 AM CDTSevere Thunderstorm WarningLIXSaint Tammany, Tangipahoa, Washington35 min
Nov 1, 4:39 AM CDTSpecial Weather StatementLIXOrleans, Saint Charles51 min
Nov 1, 4:43 AM CDTSpecial Marine WarningLIX32 min
Nov 1, 4:47 AM CDTSpecial Weather StatementLIXLafourche, Terrebonne28 min
Nov 1, 4:50 AM CDTSpecial Marine WarningLIX10 min
Nov 1, 4:54 AM CDTSevere Thunderstorm WarningLIXSaint Tammany36 min
Nov 1, 5:05 AM CDTAreal Flood AdvisoryLIXSaint Tammany3 hr
Nov 1, 5:10 AM CDTSpecial Marine WarningLIX65 min
Nov 1, 5:13 AM CDTSpecial Weather StatementLIXJefferson, Lafourche, Terrebonne62 min
Nov 1, 5:20 AM CDTSpecial Weather StatementLIXOrleans40 min
Nov 1, 5:25 AM CDTSpecial Marine WarningLIX50 min
Nov 1, 5:39 AM CDTAreal Flood AdvisoryLIXSaint Tammany3 hr
Nov 1, 5:43 AM CDTSpecial Marine WarningLIX32 min
Nov 1, 5:55 AM CDTSpecial Weather StatementLIXOrleans50 min
Nov 1, 6:00 AM CDTSevere Thunderstorm WarningLIXJefferson, Lafourche15 min
Nov 1, 6:06 AM CDTSpecial Marine WarningLIX54 min
Nov 1, 6:10 AM CDTSpecial Weather StatementLIXJefferson, Plaquemines50 min
Nov 1, 6:13 AM CDTSpecial Marine WarningLIX62 min
Nov 1, 6:26 AM CDTSpecial Marine WarningLIX49 min
Nov 1, 6:35 AM CDTSevere Thunderstorm WarningLIXPlaquemines55 min
Nov 1, 7:00 AM CDTSpecial Marine WarningLIX30 min
Nov 1, 7:12 AM CDTSpecial Marine WarningLIX48 min
Nov 1, 7:16 AM CDTSpecial Marine WarningLIX29 min
Nov 1, 7:31 AM CDTSpecial Marine WarningLIX29 min
Nov 1, 7:43 AM CDTSpecial Marine WarningLIX62 min
Nov 1, 7:59 AM CDTSpecial Marine WarningLIX91 min
Nov 1, 8:17 AM CDTSpecial Marine WarningLIX27 min
Nov 1, 8:43 AM CDTSpecial Marine WarningLIX92 min
Nov 1, 11:27 AM CDTRiver Flood WarningLIXSaint Tammany23 hr
Nov 1, 3:08 AM CDTSpecial Weather StatementLIXAmite37 min
Nov 1, 3:48 AM CDTSpecial Weather StatementLIXPike, Walthall27 min
Nov 1, 4:53 AM CDTSevere Thunderstorm WarningLIXPearl River37 min
Nov 1, 5:12 AM CDTTornado WarningLIXPearl River20 min
Nov 1, 5:28 AM CDTSevere Thunderstorm WarningLIXHancock, Harrison32 min
Nov 1, 5:42 AM CDTSpecial Weather StatementLIXHancock18 min
Nov 1, 5:45 AM CDTSevere Thunderstorm WarningLIXHancock, Harrison17 min
Nov 1, 5:57 AM CDTTornado WarningLIXHarrison, Jackson33 min
Nov 1, 6:00 AM CDTSevere Thunderstorm WarningLIXHarrison, Jackson30 min
Nov 1, 6:24 AM CDTSevere Thunderstorm WarningLIXJackson36 min
Nov 1, 6:25 AM CDTSevere Thunderstorm WarningLIXJackson35 min
Nov 1, 6:48 AM CDTTornado Warning Tornado observedLIXJackson27 min

Nearby

Tornado Warnings in Louisiana, 2018Tornado Warnings in Mississippi, 2018Every tornado warning in 2018Tornadoes in 2018

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.