Alert archive / Louisiana / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 157, NWS New Orleans, LA
NWS New Orleans, LA issued this severe thunderstorm warning at May 28, 1997, 1:45 PM CDT for Livingston Parish, Louisiana. It was in force for 60 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
- May 28, 1997, 1:45 PM CDT (18:45 UTC)
- Expired
- May 28, 1997, 2:45 PM CDT
- In force
- 60 min
- Issued by
- NWS New Orleans, LA
- Area
- Whole counties
County Livingston Parish, LA
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, 6.8 hours before the alert went out and 101 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
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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, 1 hour 57 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, 1 hour 55 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.
The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| 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, 5:27 PM CDT | Severe Thunderstorm Warning | LIX | Lafourche | 33 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 |
| May 28, 2:31 PM CDT | Severe Thunderstorm Warning | LIX | Pearl River | 29 min |
| May 28, 3:18 PM CDT | Severe Thunderstorm Warning | LIX | Pearl River | 57 min |
| May 28, 3:34 PM CDT | Severe Thunderstorm Warning | LIX | Amite, Wilkinson | 56 min |
| May 28, 3:47 PM CDT | Tornado Warning | LIX | Pearl River | 28 min |
| May 28, 5:12 PM CDT | Severe Thunderstorm Warning | LIX | Amite | 18 min |
| May 28, 5:21 PM CDT | Severe Thunderstorm Warning | LIX | Pike | 24 min |
| May 28, 5:39 PM CDT | Tornado Warning | LIX | Amite | 36 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; the sounding from the Mesonet's radiosonde archive.