Alert archive / Louisiana / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 113, NWS New Orleans, LA

June 21, 2001Orleans Parish, Saint Bernard Parish, Louisiana

NWS New Orleans, LA issued this severe thunderstorm warning at Jun 21, 2001, 3:44 PM CDT for Orleans Parish, Saint Bernard Parish, Louisiana. It was in force for 31 min. No storm report in the archive falls 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.

The facts

Issued: Jun 21, 2001, 3:44 PM CDT (20:44 UTC)
Expired: Jun 21, 2001, 4:15 PM CDT
In force: 31 min
Issued by: NWS New Orleans, LA
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Orleans Parish, LA, Saint Bernard Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 8.7 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: 2073 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 763 m above ground
0-6 km bulk shear: 3 kt
0-1 km storm-relative helicity: -25 m²/s²
0-3 km storm-relative helicity: -29 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KLIX 212045
SVRNEW

LAC071-087-212115-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
344 PM CDT THU JUN 21 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ORLEANS PARISH IN SOUTHEAST LOUISIANA
  THIS INCLUDES THE CITY OF EAST NEW ORLEANS
  ST. BERNARD PARISH IN SOUTHEAST LOUISIANA
  THIS INCLUDES THE CITY OF CHALMETTE

* UNTIL 415 PM CDT

* AT 343 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  A BAND OF SEVERE THUNDERSTORMS OVER EAST NEW ORLEANS EXTENDING     
  SOUTH INTO ST BERNARD PARISH NEAR CHALMETTE MOVING EAST AT 25 MPH.

THIS IS A DANGEROUS STORM...STAY INDOORS AWAY FROM WINDOWS.

THESE ARE DANGEROUS STORMS WITH LARGE HAIL...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.
J
LAT...LON 3008 9008 2991 9003 2997 8960 3019 8965

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 21, 2:29 PM CDT	Severe Thunderstorm Warning	LIX	Saint Charles, Saint John the Baptist	31 min
Jun 21, 2:55 PM CDT	Severe Thunderstorm Warning	LIX	Jefferson, Orleans	25 min
Jun 21, 3:01 PM CDT	Tornado Warning	LIX	Jefferson	29 min
Jun 21, 3:15 PM CDT	Severe Thunderstorm Warning	LIX	Orleans, Saint Bernard	30 min
Jun 21, 3:21 PM CDT	Severe Thunderstorm Warning	LIX	Jefferson, Plaquemines	39 min
Jun 21, 3:41 PM CDT	Flash Flood Warning	LIX	Jefferson, Orleans, Plaquemines, Saint Bernard	3 hr
Jun 21, 4:05 PM CDT	Severe Thunderstorm Warning	LIX	Saint Bernard	40 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 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; the sounding from the Mesonet's radiosonde archive.