Alert archive / Louisiana / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 166, NWS New Orleans, LA
NWS New Orleans, LA issued this severe thunderstorm warning at May 28, 1997, 5:27 PM CDT for Lafourche Parish, Louisiana. It was in force for 33 min. 1 report 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
- May 28, 1997, 5:27 PM CDT (22:27 UTC)
- Expired
- May 28, 1997, 6:00 PM CDT
- In force
- 33 min
- Issued by
- NWS New Orleans, LA
- Area
- Whole counties
County Lafourche Parish, LA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 28, 5:58 PM CDT | Hail 0.88 | Galliano, 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 28, 1:30 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 10.5 hours before the alert went out and 107 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.
- Mixed-layer CAPE
- 570 J/kg
- Mixed-layer CIN
- -154 J/kg
- Mixed-layer LCL
- 1200 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 23 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
947 WUUS1 KNEW 282230 RRA SVRNEW LAC057-LAZ502-282300- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING NATIONAL WEATHER SERVICE NEW ORLEANS LA 527 PM CDT WED MAY 28 1997 THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING EFFECTIVE UNTIL 600 PM CDT FOR RESIDENTS IN THE FOLLOWING LOCATION... IN SOUTHEAST LOUISIANA ...EASTERN LAFOURCHE PARISH AND FOR MARINE INTERESTS IN THE COASTAL WATERS AROUND... ...BARATARIA BAY AT 525 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM NEAR LITTLE LAKE OR 8 MILES EAST OF LAROSE. THIS STORM WAS NEARLY STATIONARY AND IS LIKELY PRODUCING LARGE HAIL. GALE FORCE GUSTS ARE ALSO POSSIBLE ON THE AREA LAKES NEAR THIS STORM. THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH YOU SHOULD PREPARE FOR DAMAGING WIND IN EXCESS OF 55 MPH...LARGE HAIL...AND DEADLY LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER... PREFERABLY INSIDE A STRONG BUILDING BUT STAY AWAY FROM WINDOWS.
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.
In the hours before
Special weather statement, May 28, 11:48 AM CDT, 5 hours 39 minutes before
LAZ034>040-046>049-056>070-MSZ068>071-080>082-291200- THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE NEW ORLEANS/BATON ROUGE LA 1150 AM CDT WED MAY 28 1997 THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS IN EAST CENTRAL... SOUTHEAST LOUISIANA AND SOUTH MISSISSIPPI THIS AFTERNOON. THIS ACTIVITY WILL CONTINUE INTO THE NIGHT WITH THE APPROACH OF A COLD FRONT THAT SHOULD REACH CENTRAL LOUISIANA AFTER MIDNIGHT. VERY WARM..HUMID AND UNSTABLE CONDITIONS CONTINUE OVER THE AREA TODAY. UPPER AIR SOUNDINGS.. WHEN MODIFIED FOR AFTERNOON HEATING...INDICATE ADDITIONAL INSTABILITY. THIS CONDITION WILL LEAD TO THE POSSIBILITY OF ISOLATED SEVERE THUNDERSTORMS WITH LOCALLY HEAVY RAINFALL AND STRONG GUSTY WINDS THIS AFTERNOON AND TONIGHT.
Special weather statement, May 28, 11:50 AM CDT, 5 hours 37 minutes before
LAZ034>040-046>049-056>070-MSZ068>071-080>082-291200- THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE NEW ORLEANS/BATON ROUGE LA 1150 AM CDT WED MAY 28 1997 THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS IN EAST CENTRAL... SOUTHEAST LOUISIANA AND SOUTH MISSISSIPPI THIS AFTERNOON. THIS ACTIVITY WILL CONTINUE INTO THE NIGHT WITH THE APPROACH OF A COLD FRONT THAT SHOULD REACH CENTRAL LOUISIANA AFTER MIDNIGHT. VERY WARM..HUMID AND UNSTABLE CONDITIONS CONTINUE OVER THE AREA TODAY. UPPER AIR SOUNDINGS.. WHEN MODIFIED FOR AFTERNOON HEATING...INDICATE ADDITIONAL INSTABILITY. THIS CONDITION WILL LEAD TO THE POSSIBILITY OF ISOLATED SEVERE THUNDERSTORMS WITH LOCALLY HEAVY RAINFALL AND STRONG GUSTY WINDS THIS AFTERNOON AND TONIGHT.
Local storm report, May 28, 4:32 PM CDT, 55 minutes before
PRELIMINARY LOCAL STORM REPORTS
NATIONAL WEATHER SERVICE NEW ORLEANS LA
428 PM CDT WED MAY 28 1997
TIME(CDT) .....CITY LOCATION...... STATE ...EVENT/REMARKS...
....COUNTY LOCATION......
0320 PM WIGGINS MS .88 INCH HAIL
05/28/97 PEARL RIVER REPORTED BY SHERIFFS OFFICE.
0320 PM PICAYUNE MS .75 INCH HAIL
05/28/97 PEARL RIVER REPORTED BY NWS EMPLOYEE.
0332 PM CONVENT LA 1.50 INCH HAIL
05/28/97 ST. JAMES PING PONG BALL SIZE REPORTED
BY SHERIFFS OFFICE.
0342 PM CARRIERE MS TORNADO
05/28/97 PEARL RIVER REPORTED BY SHERIFFS DEPUTY.
0347 PM 2 N PICAYUNE MS TORNADO
05/28/97 PEARL RIVER POWER LINES DOWN. REPORTED BY
SHERIFFS OFFICE.
24The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 28, 1:45 PM CDT | Severe Thunderstorm Warning | LIX | Livingston | 60 min |
| May 28, 3:08 PM CDT | Severe Thunderstorm Warning | LIX | Saint James | 67 min |
| May 28, 4:45 PM CDT | Severe Thunderstorm Warning | LIX | Lafourche | 15 min |
| May 28, 4:55 PM CDT | Tornado Warning | LIX | Lafourche | 35 min |
| May 28, 6:31 PM CDT | Severe Thunderstorm Warning | LIX | Pointe Coupee | 29 min |
| May 28, 6:50 PM CDT | Severe Thunderstorm Warning | LIX | West Feliciana | 25 min |
Nearby
Severe Thunderstorm Warnings in Louisiana, 1997Every severe thunderstorm warning in 1997
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.