Alert archive / Louisiana / Flash Flood Warnings in 1995

Flash Flood Warning 41, NWS New Orleans, LA

May 10, 1995Saint Tammany Parish, Tangipahoa Parish, Louisiana

NWS New Orleans, LA issued this flash flood warning at May 10, 1995, 4:26 AM CDT for Saint Tammany Parish, Tangipahoa Parish, Louisiana. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued: May 10, 1995, 4:26 AM CDT (09:26 UTC)
Expired: May 10, 1995, 8:30 AM CDT
In force: 4 hr
Issued by: NWS New Orleans, LA
Area: Whole counties

Counties Saint Tammany Parish, LA, Tangipahoa Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 9.4 hours before the alert went out and 55 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: 3211 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 896 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 20 m²/s²
0-3 km storm-relative helicity: 64 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 4.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KNEW 100927
FFWNEW
LAC103-105-101330-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
426 AM CDT WED MAY 10 1995
 
THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A
FLASH FLOOD WARNING    EFFECTIVE UNTIL  830 AM CDT
FOR RESIDENTS IN THE FOLLOWING LOCATIONS...
 
IN SOUTHEAST LOUISIANA
 
   ...ST.TAMMANY PARISH...SOUTHERN TANGIPAHOA PARISH
 
AT 4:15 AM CDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SCATTERED SHOWERS AND THUNDERSTORMS..SOME WITH VERY HEAVY RAINFALL
..FROM SOUTHERN ST. TAMMANY PARISH INTO LIVINGSTON PARISH. THESE
THUNDERSTORMS WERE MOVING EAST-NORTHEAST AT 25 TO 30 MILES PER HOUR.
 
RAINFALL REPORTS AND RADAR ESTIMATES INDICATE SIX TO TEN INCHES..WITH
LOCALLY HIGHER AMOUNTS..OF RAINFALL SINCE 10:30 PM CDT TUESDAY NIGHT.
AN ADDITIONAL ONE TO THREE INCHES..WITH LOCALLY HIGHER AMOUNTS..OF
RAINFALL POSSIBLE OVER THE NEXT TWO TO FOUR HOURS.
 
EVACUATIONS ARE IN PROGRESS THROUGHT THE SLIDELL AREA. RESIDENTS ARE
URGED TO REFRAIN FROM DRIVING WITHIN THE LOCAL AREA UNTIL FLOOD WATERS
ABATE.
 
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
CROS:S 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 10, 1:12 AM CDT, 3 hours 14 minutes before

PRELIMINARY LOCAL STORM REPORTS
NATIONAL WEATHER SERVICE NEW ORLEANS LA
115 AM CDT WED MAY 10 1995

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

7 PM          NEW ORLEANS            LA   4 CONFIRMED DEATHS DUE TO
5/8/95        ORLEANS                     FLOODING.  REPORTED BY
 TO                                       ORLEANS EOC
4 AM
5/9/95

Local storm report, May 10, 1:15 AM CDT, 3 hours 11 minutes before

PRELIMINARY LOCAL STORM REPORTS
NATIONAL WEATHER SERVICE NEW ORLEANS LA
117 AM CDT WED MAY 10 1995

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

7 PM          ST CHARLES PARISH      LA   3000 HOUSES SUSTAINED SOME
5/8/95                                    DAMAGE DUE TO FLOODING WHILE
 TO                                       1400 OF THESE HOUSES SUFFERED
4 AM                                      MAJOR DAMAGE.  REPORTED BY
5/9/95                                    ST CHARLES EOC

Local storm report, May 10, 1:53 AM CDT, 2 hours 33 minutes before

PRELIMINARY LOCAL STORM REPORTS
NATIONAL WEATHER SERVICE NEW ORLEANS LA
135 AM CDT WED MAY 10 1995

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

1005 PM       POPLARVILLE            MS   POSSIBLE TORNADO REPORTED BY
5/9/95        PEARL RIVER                 PUBLIC

1140 PM       LAKESHORE              MS   POSSIBLE TORNADO REPORTED BY
5/9/95        HANCOCK                     PUBLIC

1135 PM       LAKE CATHERINE         LA   WIND GUSTS TO 83 MPH
5/9/95        ORLEANS                     DAMAGE UNKNOWN AT THIS TIME

1240 AM       HENDERSON PT           MS   WATERSPOUT REPORTED BY S.O.
5/10/95       PASS CHRISTIAM
              HARRISON
848 PM CDT      JACKSON CITY     MS    BRIEF TORNADO REPORTED BY
5/9/95          JACKSON                THE PUBLIC

1150 PM CDT     SLIDELL          LA    WIDESPREAD FLOODING.  MANY
5/9/95          ST TAMMANY             SUBDIVISIONS UNDER HIGH| WATER.
                                       NUMEROUS STREETS AND ROADS
                                       IMPASSABLE AS REPORTED BY
                                       SLIDELL P.D.

Local storm report, May 10, 2:49 AM CDT, 1 hour 37 minutes before

PRELIMINARY LOCAL STORM REPORTS
NATIONAL WEATHER SERVICE NEW ORLEANS LA
250 AM CDT WED MAY 10 1995

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

400 AM SLIDELL MS 5 FEET OF WATER REPORTED ON 6TH
05/09/95 ST TAMMANY STREET NEAR OLD TOWN SLIDELL.
EVACUATION OF HOMES BY BOAT.
SLIDELL POLICE DEPARTMENT ALSO
REPORTS EVACUATIONS IN NORTH
SLIDELL AREA. RAIN GAUGE IN OLD
TOWN REPORED 8.8" OF RAIN AS 4AM.

410AM SAUCIER AND LYMAN MS POSSIBLE TORNADO REPORTED BY
05/09/95 HARRISON HARRISON COUNTY SHERIFFS OFFICE.
HOUSES DAMAGED AND TREES DOWN.

9 PM-12 AM ORMOND LA ST CHARLES E.O.C. REPORTS 15" OF
ST CHARLES OF RAIN BETWEEN 9PM AND 12AM.
ALSO NUMEROUS REPORTS AROUND PARISH
OF FROM 12" TO 19" OF RAIN.

515 AM PEARLINGTON MS MISSISSIPPI EMERGENCY MANAGEMENT
05/09/95 HANCOCK REPORTS HIGHWAY 43 IS UNDER WATER.

515 AM PICAYUNE
05/09/95 PEARL RIVER MS MISSISSIPPI EMERGENY MANAGEMENT REPORT REPORTED 200 PEOPLE EVACUATED DUE TO
HIGH WATER.

735 AM THROUGHOUT PARISH LA ST CHARLES E.O.C. REPORTS 100 HOMES
05/09/95 ST CHARLES FLOODED.

1130 PM NEW ORLEANS LA TV NEWS REPORTS HOUSE HEAVILY DAMAGED
TO 1200AM ORLEANS DAMAGED ON CAMP STREET.
05/09/95

719 AM GULFPORT MS NUMEROUS REPORTS OF FUNNEL CLOUDS
HARRISON BY: GULFPORT P.D AND HARRISON C.D.

1010 AM MOSS POINT MS POSSIBLE TORNADO DAMAGED SOME HOMES.
JACKSON TORNADO REPORTED BY JACKSON COUNTY
S.O. ALONG HWY 613/614 NEAR MOSS
POINT AND HURLEY.

1030-11 PM ARABI LA 8 RAILROAD CARS OVERTURNED. NUMEROUS
ST BERNARD TREES DOWN. 2 BUSINESSES SUSTAINED
HEAVY DAMAGE.

1030 PM KILN MS MARBLE SIZE HAIL ALONG HWY 603
HANCOCK REPORTED BY HARRISON C.D.

1110 PM CAUSEWAY TOLL BRIDGE LA ESE WIND 60 MPH...0 VISIBILITY...AND
ST TAMMANY/JEFFERSON 1/2" HAIL REPORTED BY THE CAUSEWAY
BRIDGE P.D.
4
1145 PM NEAR KILN MS NUMEROUS TREES DOWN DUE TO HIGH
HANCOCK WINDS.

1150 PM D`IBERVILLE MS MARBLE SIZE HAIL REPORTED
HARRISON

Special weather statement, May 10, 3:34 AM CDT, 52 minutes before

LAZ029-033-101100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BATON ROUGE LA
335 AM CDT WED MAY 10 1995

...TORNADO WATCH IN EFFECT UNTIL 7 AM CDT THIS MORNING FOR EAST
CENTRAL LOUISIANA...
...FLASH FLOOD WATCH IN EFFECT THIS MORNING FOR THE BATON ROUGE
METROPOLITAN AREA...
AT 330 AM CDT RADAR SHOWED STRONG THUNDERSTORMS FROM LAFAYETTE ACROSS
BATON ROUGE TO AMITE AND FROM BAYOU PIGEON NORTHEAST ACROSS HAMMOND AND
COVINGTON TO PICAYUNE MISSISSIPPI.  MOVEMENT WAS NORTHEAST AT 25 MPH.

PEOPLE IN EAST CENTRAL LOUISIANA CAN EXPECT STRONG AND GUSTY WIND...
HEAVY RAIN WITH FLOODING OF STREETS AND OTHER LOW LYING AREAS...
DANGEROUS LIGHTNING AND POSSIBLY SOME HAIL AS THUNDERSTORMS CROSS THE
AREA THIS MORNING.

REMAIN ALERT AND LISTEN TO NOAA WEATHER RADIO FOR LATER STATEMENTS OR
POSSIBLE WARNINGS.

The office that day

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

Issued	Product	Office	Counties	Lasted
May 9, 7:47 PM CDT	Severe Thunderstorm Warning	LIX	St. Mary	58 min
May 9, 8:14 PM CDT	Severe Thunderstorm Warning	LIX	Washington	61 min
May 9, 8:16 PM CDT	Severe Thunderstorm Warning	LIX	Iberia, Saint Martin	59 min
May 9, 8:17 PM CDT	Severe Thunderstorm Warning	LIX	Iberville	58 min
May 9, 8:40 PM CDT	Severe Thunderstorm Warning	LIX	Ascension	65 min
May 9, 9:06 PM CDT	Severe Thunderstorm Warning	LIX	Livingston	54 min
May 9, 9:25 PM CDT	Severe Thunderstorm Warning	LIX	Orleans, Saint Tammany	65 min
May 9, 11:12 PM CDT	Tornado Warning	LIX	Orleans, Saint Tammany	63 min
May 10, 12:12 AM CDT	Severe Thunderstorm Warning	LIX	East Baton Rouge, West Baton Rouge	63 min
May 10, 1:12 AM CDT	Flash Flood Warning	LIX	Ascension, Livingston	2 hr
May 10, 1:24 AM CDT	Flash Flood Warning	LIX	Saint Tammany, Tangipahoa	3 hr
May 10, 2:22 AM CDT	Severe Thunderstorm Warning	LIX	Saint Tammany, Tangipahoa	68 min
May 10, 8:04 AM CDT	Severe Thunderstorm Warning	LIX	Orleans, Saint Bernard	56 min
May 10, 11:13 AM CDT	Severe Thunderstorm Warning	LIX	Plaquemines, Saint Bernard	62 min
May 10, 3:30 PM CDT	Tornado Warning	LIX	Avoyelles, Saint Landry	60 min
May 10, 3:53 PM CDT	Severe Thunderstorm Warning	LIX	Iberville, Saint Martin	67 min
May 10, 4:36 PM CDT	Severe Thunderstorm Warning	LIX	Saint Landry	69 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.