Alert archive / Louisiana / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 162, NWS New Orleans, LA

July 27, 2000Pointe Coupee Parish, Louisiana

NWS New Orleans, LA issued this severe thunderstorm warning at Jul 27, 2000, 4:30 PM CDT for Pointe Coupee Parish, Louisiana. It was in force for 30 min. 2 reports 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
Jul 27, 2000, 4:30 PM CDT (21:30 UTC)
Expired
Jul 27, 2000, 5:00 PM CDT
In force
30 min
Issued by
NWS New Orleans, LA
Area
Whole counties

County Pointe Coupee Parish, LA

What was reported inside it

TimeReportWhereRemark
Jul 27, 4:40 PM CDTThunderstorm WindNew Roads, LAA few trees were blown down.
Jul 27, 4:40 PM CDTHail 0.75New Roads, LA

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

Lake Charles Mun, LA (KLCH), launched 12:00Z, 9.5 hours before the alert went out and 167 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, Lake Charles Mun, LA at 12:00Z on 2000-07-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1221 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, Lake Charles Mun, LA at 12:00Z on 2000-07-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -47 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
1221 J/kg
Mixed-layer CIN
-55 J/kg
Mixed-layer LCL
1037 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
-47 m²/s²
0-3 km storm-relative helicity
-18 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 272131
SVRNEW
LAC077-272200-

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

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  POINTE COUPEE PARISH IN SOUTHEAST LOUISIANA
  THIS INCLUDES THE CITY OF NEW ROADS

* UNTIL 500 PM CDT

* AT 429 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A SEVERE THUNDERSTORM JUST EAST OF NEW ROADS...MOVING WEST AT 20 
  MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  NEW ROADS AT 435 PM CDT
  6 MILES SOUTH OF MORGANZA AT 455 PM CDT
  6 MILES NORTH OF LIVONIA AT 500 PM CDT

LARGE 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 IN NEW ORLEANS.

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, 1 hour 25 minutes earlier.

Area forecast discussion, Jul 27, 3:05 PM CDT, 1 hour 25 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, 5 hours 40 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, 3:35 PM CDTSevere Thunderstorm WarningLIXEast Baton Rouge40 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.