Alert archive / Louisiana / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 124, NWS New Orleans, LA

July 19, 2000Washington Parish, Louisiana; Pearl River County, Mississippi

NWS New Orleans, LA issued this severe thunderstorm warning at Jul 19, 2000, 5:45 PM CDT for Washington Parish, Louisiana; Pearl River County, Mississippi. It was in force for 30 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: Jul 19, 2000, 5:45 PM CDT (22:45 UTC)
Expired: Jul 19, 2000, 6:15 PM CDT
In force: 30 min
Issued by: NWS New Orleans, LA
Area: Whole counties

Counties Washington Parish, LA, Pearl River County, MS

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 10.8 hours before the alert went out and 63 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: 1734 J/kg
Mixed-layer CIN: -131 J/kg
Mixed-layer LCL: 1191 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: -24 m²/s²
0-3 km storm-relative helicity: -2 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KLIX 192244 COR
SVRNEW
LAC117-MSC109-147-192315-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING...CORRECTED
NATIONAL WEATHER SERVICE NEW ORLEANS LA
545 PM CDT WED JUL 19 2000

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WASHINGTON PARISH IN SOUTHEAST LOUISIANA
  PEARL RIVER COUNTY IN SOUTHERN MISSISSIPPI

* UNTIL 615 PM CDT

* AT 540 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 10 MILES NORTHEAST OF VARNADO...OR ABOUT 13
  MILES NORTHWEST OF POPLARVILLE...MOVING WEST AT 5 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  7 MILES NORTHEAST OF VARNADO AT 615 PM CDT

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

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 19, 1:40 PM CDT, 4 hours 5 minutes earlier.

Area forecast discussion, Jul 19, 1:40 PM CDT, 4 hours 5 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NEW ORLEANS/BATON ROUGE LA
140 PM CDT WED JUL 19 2000

MODELS FAIR WITH NGM SHOWING HIGHER QPF VALUES AGAIN. EACH KEEPS
H5 RIDGE OVER AREA THURSDAY BEFORE FLATTENING RIDGE FRIDAY AHEAD OF
NEXT MAJOR SHORT WAVE MOVING EAST ACROSS CENTRAL PLAINS. AVN
RETROGRADES RIDGE TO WEST ALLOWING SURFACE FRONT TO DROP SOUTHEAST
INTO GULF COASTAL PLAINS THIS WEEKEND.  THIS SHOULD RELIEVE AREA OF
HEAT ADVISORY CONDITIONS AND PROVIDE MUCH NEEDED PRECIPITATION SAT
AND SUN.  IN THE MEANTIME...BROKEN CLOUDS OVER SOUTHEAST LOUISIANA
ASSOCIATED WITH WEAK SHORT WAVE OFF THE COAST HAVE HELPED TO CAP OFF
MAX TEMPERATURES IN THE LOWER TO MID 90S TODAY. EXPECT THESE CLOUDS
TO DISSIPATE TONIGHT. WEAK SHORT WAVE WILL DRP SOUTHEAST OVER STATE
AGAIN THUR AND HANG IN OVER COASTAL WATERS FRI. MEANWHILE SURFACE
FRONT ASSOCIATED WITH H5 TROUGH WILL DROP SOUTH INTO N LA AND CENTRL
MS FRIDAY. WILL SHOW IMPROVING CHANCE OF PRECIPITATION FRIDAY
THROUGH SUNDAY.
CURRENT WEAT TO NORTHWEST FLOW OVER AREA WILL MAINTAN MINIMUM TEMPS
IN ZONES SOUTH OF LAKE PONTCHARTRAIN TONIGHT AND THU NIGHT AT 80 OR
ABOVE.  WILL CONTINUE HEAT ADVISORY THROUGH THURSDAY. EXPECT THIS
WILL BE CANCELLED FRIDAY. PRELIMINARY NUMBERS FOLLOW:

MCB 74/98/73/95 1314  BTR 78/95/77/95 0214
MSY 82/97/80/85 1213  GPT 75/99/74/98 1313

.NEW...NONE.
LA...HEAT ADVZY FOR PARISHES SOUTH OF LAKE PONTCHARTRAIN.
MS...NONE.

In the hours before

Local storm report, Jul 19, 5:00 PM CDT, 45 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
500 PM CDT WED JUL 19 2000

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

435 PM     2 S PROGRESS              MS   ESTIMATED WIND GUST
07/19/00   PIKE                           60 TO 65 MPH REPORTED
                                          BY EMERGENCY MANAGEMENT.
                                          PEA TO MARBLE SIZE HAIL
                                          ALSO REPORTED.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 19, 4:25 PM CDT	Severe Thunderstorm Warning	LIX	Tangipahoa, Washington	65 min
Jul 19, 5:45 PM CDT	Severe Thunderstorm Warning	LIX	Walthall	30 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 2000 Severe Thunderstorm Warnings in Mississippi, 2000 Every 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.