Alert archive / Louisiana / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 45, NWS New Orleans, LA

June 26, 2002Livingston Parish, Louisiana

NWS New Orleans, LA issued this severe thunderstorm warning at Jun 26, 2002, 10:19 AM CDT for Livingston Parish, Louisiana. It was in force for 26 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jun 26, 2002, 10:19 AM CDT (15:19 UTC)
Expired: Jun 26, 2002, 10:45 AM CDT
In force: 26 min
Issued by: NWS New Orleans, LA
Area: Whole counties

County Livingston Parish, LA

What was reported inside it

Time	Report	Where	Remark
Jun 26, 10:30 AM CDT	Thunderstorm Wind	Springfield, LA	Several 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 nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 3.3 hours before the alert went out and 101 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: 764 J/kg
Mixed-layer CIN: -71 J/kg
Mixed-layer LCL: 743 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 6 m²/s²
0-3 km storm-relative helicity: 20 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 261519
SVRNEW
LAC063-261545-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1018 AM CDT WED JUN 26 2002

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  LIVINGSTON PARISH IN SOUTHEAST LOUISIANA

* UNTIL 1045 AM CDT

* AT 1013 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM NORTH CENTRAL LIVINGSTON PARISH  
  TO SOUTHWEST LIVINGSTON PARISH...MOVING EAST AT 15 TO 20 MPH.

DIME SIZED HAIL AND DAMAGING WINDS ARE LIKELY WITH THIS STORM. TAKE 
COVER IN A STURDY BUILDING AND STAY AWAY FROM WINDOWS.

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

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 26, 3:10 AM CDT, 7 hours 9 minutes earlier.

Area forecast discussion, Jun 26, 3:10 AM CDT, 7 hours 9 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NEW ORLEANS/BATON ROUGE LA
300 AM CDT WED JUN 25 2002

UPPER LOW PRESSURE SYSTEM NEARLY STATIONARY OVER THE ARKLATEX EARLY
THIS MORNING AND MOST MODELS FORECAST VERY LITTLE MOVEMENT THRU THU.
AFTERWARDS THE UPPER LOW OPENS INTO A SHEAR AXIS OVER E TX/W LA FRI.
UPPER TROUGH ALOFT IN NRN STREAM WILL SHEAR EWD LEAVING HEIGHTS
BUILDING EWD ACROSS THE NRN PLAINS OVER THE WEEKEND INTO EARLY NEXT
WEEK. THIS WILL EVENTUALLY HELP THE REMNANTS OF THE SHEAR AXIS TO
MOVE SWWD THRU S TX. ALSO THE WRN PORTION OF THE BERMUDA RIDGE WILL
BUILD WWD ACROSS THE ERN/CNTRL GULF WHICH WILL AFFECT THE CENTRAL
GULF COAST REGION. THEREFORE ABOVE NORMAL SHOWER ACTIVITY THRU FRI
WILL GIVE WAY TO MORE SEASONAL ACTIVITY OVER THE WEEKEND AND PERHAPS
A LITTLE BELOW NORMAL BY EARLY NEXT WEEK.

IN THE MEANTIME, SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS
TODAY THROUGH THURSDAY MAY PRODUCE SOME LOCALLY HEAVY RAINS OF 2 TO
3 INCHES OR MORE. INDIVIDUAL SHOWERS WILL MOVE TO THE NORTH ABOUT 15
TO 20 MPH. THUS AREAL COVERAGE IS EXPECTED TO BE EXTENSIVE. PRECIP
WATER VALUES ARE EXPECTED TO BE 1.9 INCHES OR GREATER WITH K-VALUES
GREATEN THAN 34 AND THETA-E VALUES AT 850 MB 338 OR HIGHER. LATEST
SATELLITE SOUNDER DATA CONTINUES TO SHOW DEEP TROPICAL MOISTURE FROM
THE LA/MS COAST S AND SW TO THE SW GULF OF MEXICO. THIS MOISTURE IS
FEEDING NWD. AVN IS THE MODEL OF CHOICE FOR THIS FCST PACKAGE AND
SHOWS A VORT LOBE ROTATING AROUND THE BASE OF THE UPPER TROUGH INTO
SRN LA THIS MORNING. THUS SHOWER ACTIVITY WILL BE ON THE INCREASE
EARLY.

MCB 85/70/86/70 7473    BTR 85/72/86/72 8563
MSY 85/75/86/75 8463    GPT 85/75/86/75 6362

.NEW...NONE
LA...NONE.
MS...NONE.

05

In the hours before

Special weather statement, Jun 26, 6:00 AM CDT, 4 hours 19 minutes before

LAZ034>040-046>050-056>070-MSZ068>071-077-080>082-271100-

HAZARDOUS WEATHER OUTLOOK...CORRECTED DATE OF ISSUANCE
NATIONAL WEATHER SERVICE NEW ORLEANS LA
600 AM CDT WED JUN 26 2002

.SYNOPSIS...THE CENTRAL GULF COAST WEATHER CONTINUES TO BE
INFLUENCED BY AN UPPER LEVEL LOW PRESSURE SYSTEM CURRENTLY NEARLY
STATIONARY OVER NORTHEAST TEXAS. AN ABUNDANCE OF MOISTURE IN THE
LOWER LEVELS IN COMBINATION WITH MID LEVEL INSTABILITY WILL RESULT
IN SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS TODAY AND TONIGHT.

.THUNDERSTORMS...
SCATTERED THUNDERSTORMS WILL BE CAPABLE OF PRODUCING FREQUENT
LIGHTNING...WIND GUSTS OF 30 MPH AND HEAVY DOWNPOURS OF RAIN TODAY
AND TONIGHT. RAINFALL RATES OF TWO TO THREE INCHES PER HOUR CAN BE
EXPECTED WITH SOME OF THE STORMS WHICH COULD RESULT IN LOCALIZED
MINOR FLOODING OF ROADWAYS AND LOW LYING AND POORLY DRAINED AREAS.
SEVERE THUNDERSTORM DEVELOPMENT IS NOT EXPECTED TODAY AND TONIGHT.

.MARINE HAZARDS...WATERSPOUTS WILL BE POSSIBLE WITH THE STRONGER
STORMS TODAY AND TONIGHT OVER THE SOUTHEAST LOUISIANA AND
MISSISSIPPI COASTAL WATERS AS WELL AS THE TIDAL LAKES OF
PONTCHARTRAIN...MAUREPAS AND BORGNE.

.ACTIONS...
NONE AT THIS TIME.

FOR MORE INFORMATION...VISIT OUR WEB SITE AT WWW.SRH.NOAA.GOV/LIX
(ALL LOWER CASE).

The office that day

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

Issued	Product	Office	Lasted
Jun 26, 3:45 AM CDT	Special Marine Warning	LIX	90 min
Jun 26, 5:45 AM CDT	Special Marine Warning	LIX	60 min
Jun 26, 11:12 AM CDT	Special Marine Warning	LIX	2 hr
Jun 26, 1:30 PM CDT	Special Marine Warning	LIX	2 hr
Jun 26, 2:10 PM CDT	Special Marine Warning	LIX	110 min
Jun 26, 4:06 PM CDT	Special Marine Warning	LIX	39 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 2002 Every severe thunderstorm warning in 2002

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.