Alert archive / Louisiana / Flash Flood Warnings in 1995

Flash Flood Warning 44, NWS New Orleans, LA

May 19, 1995Orleans Parish, Louisiana

NWS New Orleans, LA issued this flash flood warning at May 19, 1995, 2:55 AM CDT for Orleans Parish, Louisiana. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: May 19, 1995, 2:55 AM CDT (07:55 UTC)
Expired: May 19, 1995, 6:00 AM CDT
In force: 3 hr
Issued by: NWS New Orleans, LA
Area: Whole counties

County Orleans Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 7.9 hours before the alert went out and 30 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: 1333 J/kg
Mixed-layer CIN: -27 J/kg
Mixed-layer LCL: 1092 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 68 m²/s²
0-3 km storm-relative helicity: 69 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.5

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KNEW 190757 RRA
FFWNEW
LAC071-191100-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
255 AM CDT FRI MAY 19 1995
 
THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A
FLASH FLOOD WARNING    EFFECTIVE UNTIL  600 AM CDT
FOR RESIDENTS IN THE FOLLOWING LOCATION...
 
IN SOUTHEAST LOUISIANA
 
   ...NORTHERN ORLEANS PARISH
 
AT 255 AM NATIONALWEATHER SERVICE RADAR INDICATED A VERY STRONG
THUNDERSTORM OVER THE NORTHERN HALF OF ORLEANS PARISH. RADAR ESTIMATES
OF 3 INCHES OF RAINFALL HAVE OCCURRED OVER THE LAST HOUR. ADDITIONAL
THUNDRSTORMS ARE EXPECTED TO PASS ACROSS ORLEANS PARISH THIS MORNING.
 
 
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE@
ROADWAY.  THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO
CROSS SAFELY.  VEHICLES CAUGHT IN RISING WATER SHOULD BE
ABANDONED QUICKLY.  MOVE TO HIGHER GROUND.

What forecasters said that day

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

In the hours before

Local storm report, May 19, 1:21 AM CDT, 1 hour 34 minutes before

PRELIMINARY LOCAL STORM REPORTS
NATIONAL WEATHER SERVICE NEW ORLEANS LA
120 AM CDT FRI MAY 19 1995

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

0745 PM    BATON ROUGE               LA   URBAN STREET FLOODING
05/18/95   EAST BATON ROUGE PARISH        REPORTED BY P.D.

0755 PM    BATON ROUGE               LA   A NUMBER OF STREET CLOSURES
05/18/95   EAST BATON ROUGE PARISH        DUE TO FLOODING REPORTED
                                          BY DEPT. OF TRANSPORTATION.

0812 PM    AROUND PARISH             LA   NUMEROUS TREES DOWN.
05/18/95   WEST BATON ROUGE PARISH

0832 PM    BAKER
05/18/95   EAST BATON ROUGE PARISH   LA   POWER LINES DOWN AND ROOF
                                          DAMAGE.

1035 PM    NEAR GREENSBURG           LA   3 FEET OF WATER ON SOME
05/18/95   ST HELENA PARISH               SECONDARY ROADS BY S.O.

1040 PM    HWY 440                   LA   6 INCHES OF WATER ON HWY
05/18/95   TANGIPAHOA PARISH              440 2.5 MILES WEST OF
                                          TANGIPHOA REPORTED BY S.O.

1043 PM    AROUND PARISH             LA   NUMBER OF SECONDARY ROADS
05/18/95   TANGIPAHOA PARISH              WITH WATER COVERING ROAD.

1205 AM    BOGALUSA                  LA   NUMEROUS TREES DOWN REPORTED
05/19/95   WASHINGTON PARISH              BOGALUSA P.D.

1207 AM    CROSSROADS
05/19/95   PEARL RIVER COUNTY        MS   POWER OUT AT CROSSROADS.

0730 PM    BAKER                     LA   POSSIBLE TORNADO DAMAGED
05/18/95   EAST BATON ROUGE PARISH        ROOFS AND TREES.

110 AM     4 MILES SOUTH OF          MS   POSSIBLE TORNADO DESTROYED SHED
05/19/95   POPLARVILLE                    OVER A TRAILER AND PARTIALLY
           PEARL RIVER COUNTY             DESTROYED ROOF OFF TRAILER.
                                          NO INJURIES REPORTED. REPORTED
                                          BY PEARL RIVER S.O.

The office that day

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

Issued	Product	Office	Counties	Lasted
May 18, 7:25 PM CDT	Severe Thunderstorm Warning	LIX	Livingston, Tangipahoa	48 min
May 18, 8:17 PM CDT	Severe Thunderstorm Warning	LIX	East Baton Rouge, Livingston	58 min
May 18, 9:14 PM CDT	Severe Thunderstorm Warning	LIX	East Feliciana, Saint Helena	61 min
May 18, 10:12 PM CDT	Severe Thunderstorm Warning	LIX	Assumption, Saint James	63 min
May 18, 11:04 PM CDT	Severe Thunderstorm Warning	LIX	Saint Tammany, Washington	56 min
May 18, 11:15 PM CDT	Severe Thunderstorm Warning	LIX	Lafourche, Saint James, Saint John the Baptist	60 min
May 19, 3:51 AM CDT	Severe Thunderstorm Warning	LIX	Saint Bernard	2 hr
May 19, 6:22 AM CDT	Severe Thunderstorm Warning	LIX	Jefferson, Plaquemines	68 min
May 19, 7:34 AM CDT	Severe Thunderstorm Warning	LIX	Plaquemines	56 min

Nearby

Flash Flood Warnings in Louisiana, 1995 Every flash flood warning in 1995

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.