Alert archive / Louisiana / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 13, NWS New Orleans, LA

January 29, 2001Saint Tammany Parish, Washington Parish, Louisiana; Pearl River County, Mississippi

NWS New Orleans, LA issued this severe thunderstorm warning at Jan 29, 2001, 12:35 PM CST for Saint Tammany Parish, Washington Parish, Louisiana; Pearl River County, Mississippi. It was in force for 55 min. 2 reports came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued: Jan 29, 2001, 12:35 PM CST (18:35 UTC)
Expired: Jan 29, 2001, 1:30 PM CST
In force: 55 min
Issued by: NWS New Orleans, LA
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Saint Tammany Parish, LA, Washington Parish, LA, Pearl River County, MS

What was reported inside it

Time	Report	Where	Remark
Jan 29, 1:00 PM CST	Thunderstorm Wind	Covington, LA	Thunderstorm winds blew down 30 to 40 trees, knocked down a couple of utility poles, and took the roof off of a greenhouse north of Covington. One of the trees was blown down onto the cab of a pickup truck while others caused damage to three houses.
Jan 29, 1:20 PM CST	Thunderstorm Wind	Lacombe, LA	A few trees were blown down.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jan 29, 11:30 AM CST	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 6.6 hours before the alert went out and 29 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 26 J/kg
Mixed-layer CIN: -55 J/kg
Mixed-layer LCL: 600 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 268 m²/s²
0-3 km storm-relative helicity: 337 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS54 KLIX 291837
SVRNEW
LAC103-117-MSC045-109-291930-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1235 PM CST MON JAN 29 2001

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ST. TAMMANY PARISH IN SOUTHEAST LOUISIANA
  THIS INCLUDES THE CITIES OF...COVINGTON...SLIDELL
  WASHINGTON PARISH IN SOUTHEAST LOUISIANA
  THIS INCLUDES THE CITY OF BOGALUSA
  HANCOCK COUNTY IN SOUTHERN MISSISSIPPI
  PEARL RIVER COUNTY IN SOUTHERN MISSISSIPPI
  THIS INCLUDES THE CITIES OF...PICAYUNE...POPLARVILLE

* UNTIL 130 PM CST

* AT 1234 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM 6 MILES WEST OF ANGIE TO BEDICO  
  MOVING EAST AT 25 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
   COVINGTON...MADISONVILLE AT 1240 PM CST
   VARNADO AT 1245 PM CST
   ABITA SPRINGS...BOGALUSA AT 1250 PM CST
   BUSH...SUN AT 1255 PM CST
   CROSSROADS AT 100 PM CST
   LACOMBE AT 110 PM CST

THIS IS A DANGEROUS STORM WITH DAMAGING WINDS...STAY INDOORS AWAY
FROM WINDOWS.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN NEW ORLEANS.

LAT...LON 3017 8964 3039 8951 3069 8934 3091 8934
          3100 8963 3100 9000 3060 9023 3038 9023
          3038 9008 3026 8998 3026 8989 3023 8985
    G      3022 8975 3017 8974

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 29, 10:34 AM CST	Severe Thunderstorm Warning	LIX	East Baton Rouge, Iberville, Pointe Coupee, West Baton Rouge	26 min
Jan 29, 10:34 AM CST	Severe Thunderstorm Warning	LIX	East Feliciana	26 min
Jan 29, 11:02 AM CST	Severe Thunderstorm Warning	LIX	East Baton Rouge, East Feliciana, Saint Helena, West Baton Rouge	58 min
Jan 29, 11:02 AM CST	Severe Thunderstorm Warning	LIX	Ascension, Assumption, Iberville	58 min
Jan 29, 11:02 AM CST	Severe Thunderstorm Warning	LIX	Saint James	58 min
Jan 29, 11:02 AM CST	Severe Thunderstorm Warning	LIX	Livingston	58 min
Jan 29, 11:33 AM CST	Tornado Warning	LIX	Livingston	27 min
Jan 29, 11:43 AM CST	Tornado Warning	LIX	Tangipahoa	32 min
Jan 29, 11:44 AM CST	Severe Thunderstorm Warning	LIX	Saint Tammany, Washington	61 min
Jan 29, 11:44 AM CST	Severe Thunderstorm Warning	LIX	Saint Charles, Saint James, Saint John the Baptist	61 min
Jan 29, 12:06 PM CST	Tornado Warning	LIX	Washington	39 min
Jan 29, 12:18 PM CST	Tornado Warning	LIX	Tangipahoa	27 min
Jan 29, 12:45 PM CST	Severe Thunderstorm Warning	LIX	Lafourche, Saint Charles, Saint John the Baptist	90 min
Jan 29, 12:45 PM CST	Severe Thunderstorm Warning	LIX	Jefferson, Orleans, Plaquemines, Saint Bernard	90 min
Jan 29, 12:45 PM CST	Severe Thunderstorm Warning	LIX	Terrebonne	90 min
Jan 29, 11:02 AM CST	Severe Thunderstorm Warning	LIX	Pike	58 min
Jan 29, 12:02 PM CST	Tornado Warning	LIX	Walthall	28 min
Jan 29, 12:35 PM CST	Severe Thunderstorm Warning	LIX	Hancock	55 min
Jan 29, 2:18 PM CST	Severe Thunderstorm Warning	LIX	Hancock, Harrison	42 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 2001 Severe Thunderstorm Warnings in Mississippi, 2001 Every severe thunderstorm warning in 2001

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.