Alert archive / Louisiana / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 121, NWS New Orleans, LA

June 8, 2005Jefferson Parish, Orleans Parish, Plaquemines Parish, Louisiana

NWS New Orleans, LA issued this severe thunderstorm warning at Jun 8, 2005, 1:17 PM CDT for Jefferson Parish, Orleans Parish, Plaquemines Parish, Louisiana. It was in force for 28 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 8, 2005, 1:17 PM CDT (18:17 UTC)
Expired: Jun 8, 2005, 1:45 PM CDT
In force: 28 min
Issued by: NWS New Orleans, LA
Area: Counties, with a storm outline in the text

Counties Jefferson Parish, LA, Orleans Parish, LA, Plaquemines Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 6.3 hours before the alert went out and 59 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: 1060 J/kg
Mixed-layer CIN: -60 J/kg
Mixed-layer LCL: 903 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: 0 m²/s²
0-3 km storm-relative helicity: 9 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS New Orleans, LA wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 8, 3:05 AM CDT, 10 hours 12 minutes earlier.

Area forecast discussion, Jun 8, 3:05 AM CDT, 10 hours 12 minutes before

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Hazardous weather outlook, Jun 8, 11:15 AM CDT, 2 hours 2 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1115 AM CDT WED JUN 8 2005

LAZ034>040-046>050-056>070-MSZ068>071-077-080>082-091100-
AMITE-ASCENSION-ASSUMPTION-EAST BATON ROUGE-EAST FELICIANA-HANCOCK-
HARRISON-IBERVILLE-JACKSON-LIVINGSTON-LOWER JEFFERSON-
LOWER LAFOURCHE-LOWER PLAQUEMINES-LOWER ST. BERNARD-LOWER TERREBONNE-
ORLEANS-PEARL RIVER-PIKE-POINTE COUPEE-ST. CHARLES-ST. HELENA-
ST. JAMES-ST. JOHN THE BAPTIST-ST. TAMMANY-TANGIPAHOA-
UPPER JEFFERSON-UPPER LAFOURCHE-UPPER PLAQUEMINES-UPPER ST. BERNARD-
UPPER TERREBONNE-WALTHALL-WASHINGTON-WEST BATON ROUGE-WEST FELICIANA-
WILKINSON-
1115 AM CDT WED JUN 8 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL AND SOUTHEAST
LOUISIANA AND EXTREME SOUTHWEST...SOUTH CENTRAL AND COASTAL
MISSISSIPPI.

.DAY ONE...THIS AFTERNOON AND TONIGHT

SCATTERED THUNDERSTORMS ARE POSSIBLE ACROSS THE OUTLOOK AREA LATER
THIS AFTERNOON AND TONIGHT. IN ADDITION TO FREQUENT LIGHTNING...A
FEW OF THESE STORMS WILL BE CAPABLE OF PRODUCING HEAVY DOWNPOURS OF
RAIN...GUSTY WINDS AND SMALL HAIL. PERIODS OF HEAVY RAINFALL MAY
ALSO CAUSE PONDING ON ROADS AND LOW LYING AREAS. HOWEVER...ORGANIZED
SEVERE THUNDERSTORM DEVELOPMENT IS NOT EXPECTED.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

SCATTERED THUNDERSTORMS CAN BE EXPECTED EACH DAY THROUGH TUESDAY.
NUMEROUS SHOWERS AND THUNDERSTORMS ARE EXPECTED FRIDAY NIGHT THROUGH
SATURDAY...ESPECIALLY OVER THE MISSISSIPPI COAST AND THE COASTAL
SECTIONS OF SOUTHEAST LOUISIANA. ORGANIZED SEVERE THUNDERSTORMS ARE
NOT EXPECTED ALTHOUGH A FEW STORMS MAY BRIEFLY REACH SEVERE LEVELS.

.MARINE HAZARDS...WINDS AND SEAS ARE EXPECTED TO INCREASE BEGINNING
FRIDAY. SMALL CRAFT ADVISORY CONDITIONS MAY THEN DEVELOP BY FRIDAY
NIGHT AS A BROAD AREA OF LOW PRESSURE OUT OF THE WESTERN CARIBBEAN
ENTERS THE GULF OF MEXICO. WINDS AND SEAS ARE EXPECTED TO DIMINISH
BY MONDAY.

.SPOTTER INFORMATION STATEMENT...

THE ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS AND EMERGENCY
MANAGEMENT PERSONNEL...IN SUPPORT OF SEVERE WEATHER OPERATIONS...IS
NOT REQUESTED AT THIS TIME.

In the hours before

Special weather statement, Jun 8, 12:35 PM CDT, 42 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1235 PM CDT WED JUN 8 2005

LAZ036>038-MSZ069-070-081932-
AMITE MS-EAST FELICIANA LA-PIKE MS-ST. HELENA LA-TANGIPAHOA LA-
1235 PM CDT WED JUN 8 2005

...LINE OF STRONG THUNDERSTORMS AFFECTING AMITE AND PIKE COUNTIES IN
MISSISSIPPI AND EAST FELICIANA...ST. HELENA...AND TANGIPAHOA PARISHES
IN LOUISIANA...

AT 1234 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF STRONG THUNDERSTORMS EXTENDING FROM NEAR FAYETTE IN
MISSISSIPPI TO NEAR FELPS IN LOUSIANA.  THIS LINE OF THUNDERSTORMS IS
MOVING TO THE EAST AT 15 MPH...AND WILL AFFECT AREAS IN AND NEAR
LIBERTY...MCCOMB...FELPS...DARLINGTON...KENTWOOD...AND AMITE THROUGH
230 PM CDT.  THIS LINE OF STRONG THUNDERSTORMS IS CAPABLE OF
PRODUCING WINDS GUSTING TO 45 MPH...FREQUENT LIGHTNING...AND HEAVY
RAINFALL OF 1 TO 2 INCHES.

STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO OR TELEVISION
STATIONS...OR YOUR CABLE TELEVISION PROVIDER FOR FURTHER DETAILS OR
UPDATES.

32

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 8, 1:02 PM CDT	Special Marine Warning	LIX		118 min
Jun 8, 3:42 PM CDT	Severe Thunderstorm Warning	LIX	Livingston	33 min
Jun 8, 3:50 PM CDT	Severe Thunderstorm Warning	LIX	Tangipahoa	25 min
Jun 8, 4:54 PM CDT	Severe Thunderstorm Warning	LIX	Terrebonne	66 min
Jun 8, 5:46 PM CDT	Severe Thunderstorm Warning	LIX	Jefferson, Saint Charles	44 min
Jun 8, 5:59 PM CDT	Severe Thunderstorm Warning	LIX	Lafourche	61 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 2005 Every severe thunderstorm warning in 2005

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.