Alert archive / Louisiana / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 160, NWS New Orleans, LA

July 27, 2000East Baton Rouge Parish, Louisiana

NWS New Orleans, LA issued this severe thunderstorm warning at Jul 27, 2000, 3:35 PM CDT for East Baton Rouge Parish, Louisiana. It was in force for 40 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
Jul 27, 2000, 3:35 PM CDT (20:35 UTC)
Expired
Jul 27, 2000, 4:15 PM CDT
In force
40 min
Issued by
NWS New Orleans, LA
Area
Whole counties; the outline is the Mesonet’s reconstruction

County East Baton Rouge Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 8.6 hours before the alert went out and 140 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 12:00Z on 2000-07-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 961 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 12:00Z on 2000-07-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -12 square meters per square second.1939Sfc1 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
961 J/kg
Mixed-layer CIN
-60 J/kg
Mixed-layer LCL
1187 m above ground
0-6 km bulk shear
4 kt
0-1 km storm-relative helicity
-12 m²/s²
0-3 km storm-relative helicity
14 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 272038
SVRNEW
LAC033-272115-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
335 PM CDT THU JUL 27 2000

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST BATON ROUGE PARISH IN SOUTHEAST LOUISIANA
  THIS INCLUDES THE CITIES OF BAKER AND ZACHARY

* UNTIL 415 PM CDT

* AT 330 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A SEVERE THUNDERSTORM 6 MILES SOUTHWEST OF PRIDE...OR ABOUT 7 
  MILES EAST OF ZACHARY. THE STORM WAS NEARLY STATIONARY...HOWEVER...
  THE THUNDERSTORM WILL LIKELY BEGIN TO DRIFT WEST AND SOUTHWEST.

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

HEAVY RAINS MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES. AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS AS THEY
MAY BE WASHED OUT.

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 3070 9112 3056 9119 3053 9103 3071 9096

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 Jul 27, 3:05 PM CDT, 30 minutes earlier.

Area forecast discussion, Jul 27, 3:05 PM CDT, 30 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NEW ORLEANS/BATON ROUGE LA
300 PM CDT THU 27 JUL 2000

WK SHEAR AXIS NE-SW ALOFT OVER SE LA/S MS WILL MOVE LITTLE NEXT 24
TO 36 HRS BUT WEAKENS BY SAT AS ANOTHER S/W TROF MOVES SWD IN THE
NLY FLOW ACROSS THE MS VALLEY. LATEST SOUNDER DATA SUGGEST PW'S
HIGHER THAN LATEST MODEL RUNS INDICATED. FAIRLY GOOD COVERAGE OF
SHOWERS AND TSTMS IN S MS THIS AFTN IN AREA OF HIGHEST THETA-E
VALUES. LONGER RANGE PROGS CONTINUE THE STRONG AMPLITUDE OF RIDGE IN
THE WRN STATES AND TROFING IN THE MS VALLEY-ERN STATES. MINOR S/W
TROFS SHOULD CONTINUE TO MOVE OVER THE TOP OF THE RIDGE AND THEN
TURN SWD INTO THE MS VALLEY/GULF COAST REGION. TEMPS ALOFT REMAIN
COOLER THAN NORMAL WITH LOWER THAN NORMAL WET-BULB ZEROS. LITTLE
MOVEMENT IN INDIVIDUAL CELLS SUGGEST LOCALLY HVY RAINS OF 2 TO 3
INCHES IN A SHORT PERIOD OF TIME.

IN THE EXTENDED PACKAGE...LITTLE CHANGE INDICATED IN THE WIDELY
SCATTERED TO SCATTERED CONVECTION MOSTLY AFTNS/EVENINGS.

MCB 67/95/68/93 1212    BTR 71/93/72/93 0212
MSY 73/92/73/93 1213    GPT 71/89/72/90 1212

.NEW...NONE.
LA...NONE.
MS...NONE.
05

In the hours before

Special weather statement, Jul 27, 10:50 AM CDT, 4 hours 45 minutes before
LAZ034>040-046>050-056>070-MSZ068>071-077-080>082-271700-

THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1050 AM CDT THU JUL 27 2000

INCREASING GULF MOISTURE AND RELATIVELY COOL TEMPERATURES ALOFT
ALONG WITH INTENSE SURFACE HEATING WILL HELP TO TRIGGER WIDELY
SCATTERED SHOWERS AND THUNDERSTORMS THIS AFTERNOON. WEAK SEA BREEZE
AND LAKE BREEZE ALSO WILL LIKELY AID THE DEVELOPMENT OF THE
THUNDERSTORMS.

SIGNIFICANT SEkVERE WEATHER DEVELOPMENT IS NOT LIKELY THIS AFTERNOON.

FOR MORE WEATHER 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.

IssuedProductOfficeCountiesLasted
Jul 27, 4:30 PM CDTSevere Thunderstorm WarningLIXPointe Coupee30 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 2000Every severe thunderstorm warning in 2000

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.