Alert archive / Louisiana / Severe Thunderstorm Warnings in 2008
Severe Thunderstorm Warning 37, NWS New Orleans, LA
NWS New Orleans, LA issued this severe thunderstorm warning at Feb 12, 2008, 4:20 PM CST for Plaquemines Parish, Louisiana. It was in force for 40 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
- Feb 12, 2008, 4:20 PM CST (22:20 UTC)
- Expired
- Feb 12, 2008, 5:00 PM CST
- In force
- 40 min
- Issued by
- NWS New Orleans, LA
- Area
- Storm-based polygon
County Plaquemines 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 |
|---|---|---|---|
| Feb 12, 10:25 AM CST | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 10.3 hours before the alert went out and 79 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1161 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 115 m²/s²
- 0-3 km storm-relative helicity
- 147 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Feb 12, 3:24 PM CST, 56 minutes earlier.
Area forecast discussion, Feb 12, 3:24 PM CST, 56 minutes before
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</html>Hazardous weather outlook, Feb 12, 11:00 AM CST, 5 hours 20 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE NEW ORLEANS LA 1100 AM CST TUE FEB 12 2008 GMZ530-550-555-570-575-LAZ034>040-046>050-056>070-MSZ068>071-077- 080>082-131300- LAKE PONTCHARTRAIN AND LAKE MAUREPAS- COASTAL WATERS FROM THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER TO LOWER ATCHAFALAYA RIVER LA OUT 20 NM- COASTAL WATERS FROM PASCAGOULA MS TO THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER OUT 20 NM- COASTAL WATERS FROM THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER TO LOWER ATCHAFALAYA RIVER LA FROM 20 TO 60 NM- COASTAL WATERS FROM PASCAGOULA MS TO THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER FROM 20 TO 60 NM-POINTE COUPEE-WEST FELICIANA- EAST FELICIANA-ST. HELENA-TANGIPAHOA-WASHINGTON-ST. TAMMANY- IBERVILLE-WEST BATON ROUGE-EAST BATON ROUGE-ASCENSION-LIVINGSTON- ASSUMPTION-ST. JAMES-ST. JOHN THE BAPTIST-UPPER LAFOURCHE- ST. CHARLES-UPPER JEFFERSON-ORLEANS-UPPER PLAQUEMINES- UPPER ST. BERNARD-UPPER TERREBONNE-LOWER TERREBONNE- LOWER LAFOURCHE-LOWER JEFFERSON-LOWER PLAQUEMINES- LOWER ST. BERNARD-WILKINSON-AMITE-PIKE-WALTHALL-PEARL RIVER- HANCOCK-HARRISON-JACKSON- 1100 AM CST TUE FEB 12 2008 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF GULF OF MEXICO...SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI. .DAY ONE...THIS AFTERNOON AND TONIGHT SCATTERED TO NUMEROUS THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AND THIS EVENING AS A COLD FRONT APPROACHES AND MOVES ACROSS THE AREA. A FEW OF THE THUNDERSTORMS MAY BE SEVERE THIS AFTERNOON AND THIS EVENING WITH THE MAIN THREAT BEING DAMAGING WINDS...LARGE HAIL...AND ISOLATED TORNADOES. MARINE... STRONG NORTHWEST TO NORTHERLY WINDS IN THE WAKE OF A FRONTAL PASSAGE WILL LEAD TO SMALL CRAFT ADVISORY CONDITIONS LATE TONIGHT. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY ANOTHER ROUND OF THUNDERSTORMS IS EXPECTED LATE IN THE WEEK INTO THE WEEKEND AS A WARM FRONT LIFTS NORTH INTO THE AREA AND STALLS... BEFORE A LOW PRESSURE SYSTEM MOVES NORTHEAST THROUGH THE AREA ON SUNDAY. THE MAIN THREAT WILL BE HEAVY RAINFALL. IN ADDITION...SOME OF THESE STORMS COULD ALSO BE STRONG TO POSSIBLY SEVERE. MARINE... STRONG NORTHWEST TO NORTHERLY WINDS IN THE WAKE OF A FRONTAL PASSAGE IS EXPECTED TO CONTINUE SMALL CRAFT ADVISORY CONDITIONS WEDNESDAY. SMALL CRAFT ADVISORY CONDITIONS WILL AGAIN BE POSSIBLE EARLY SUNDAY. .SPOTTER INFORMATION STATEMENT... STORM SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON THROUGH THIS EVENING.
In the hours before
Local storm report, Feb 12, 1:15 PM CST, 3 hours 5 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
115 PM CST TUE FEB 12 2008
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1235 PM HAIL 2 S MYRTLE GROVE 29.61N 89.95W
02/12/2008 E1.75 INCH PLAQUEMINES LA EMERGENCY MNGR
GOLF BALL SIZE HAIL REPORTED.
1240 PM TORNADO MYRTLE GROVE 29.64N 89.95W
02/12/2008 PLAQUEMINES LA EMERGENCY MNGR
TORNADO TOUCHED DOWN IN OPEN FIELD. NO DAMAGE REPORTED.
1245 PM TSTM WND DMG CLINTON 30.86N 91.01W
02/12/2008 EAST FELICIANA LA LAW ENFORCEMENT
SEVERAL TREES AND POWER LINES BLOWN DOWN IN VARIOUS AREAS
OF PARISH
&&The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 12, 11:50 AM CST | Tornado Warning | LIX | Jefferson, Lafourche, Plaquemines | 25 min |
| Feb 12, 11:56 AM CST | Severe Thunderstorm Warning | LIX | Pointe Coupee, West Feliciana | 47 min |
| Feb 12, 12:11 PM CST | Tornado Warning | LIX | Jefferson, Plaquemines | 34 min |
| Feb 12, 12:27 PM CST | Severe Thunderstorm Warning | LIX | East Baton Rouge, East Feliciana, Saint Helena, Tangipahoa | 48 min |
| Feb 12, 12:46 PM CST | Severe Thunderstorm Warning | LIX | Plaquemines, Saint Bernard | 29 min |
| Feb 12, 12:48 PM CST | Special Marine Warning | LIX | 87 min | |
| Feb 12, 12:55 PM CST | Severe Thunderstorm Warning | LIX | East Feliciana, Saint Helena, Tangipahoa | 35 min |
| Feb 12, 1:09 PM CST | Tornado Warning | LIX | Saint Helena, Tangipahoa | 36 min |
| Feb 12, 1:15 PM CST | Tornado Warning | LIX | Plaquemines, Saint Bernard | 30 min |
| Feb 12, 1:40 PM CST | Tornado Warning | LIX | Saint Tammany, Tangipahoa, Washington | 35 min |
| Feb 12, 1:42 PM CST | Severe Thunderstorm Warning | LIX | Tangipahoa, Washington | 48 min |
| Feb 12, 1:46 PM CST | Special Marine Warning | LIX | 89 min | |
| Feb 12, 1:50 PM CST | Severe Thunderstorm Warning | LIX | Livingston, Saint Tammany, Tangipahoa | 40 min |
| Feb 12, 1:54 PM CST | Tornado Warning | LIX | Washington | 21 min |
| Feb 12, 2:13 PM CST | Tornado Warning | LIX | Saint Tammany, Washington | 32 min |
| Feb 12, 2:22 PM CST | Special Marine Warning | LIX | 83 min | |
| Feb 12, 2:26 PM CST | Severe Thunderstorm Warning | LIX | Jefferson, Orleans, Saint Charles | 34 min |
| Feb 12, 2:30 PM CST | Severe Thunderstorm Warning | LIX | Saint Tammany | 60 min |
| Feb 12, 2:35 PM CST | Severe Thunderstorm Warning | LIX | Assumption, Lafourche, Saint James, Saint John the Baptist | 25 min |
| Feb 12, 2:51 PM CST | Severe Thunderstorm Warning | LIX | Jefferson, Lafourche, Orleans, Plaquemines, Saint Bernard, Saint Charles and 1 more | 41 min |
| Feb 12, 3:10 PM CST | Severe Thunderstorm Warning | LIX | Terrebonne | 35 min |
| Feb 12, 3:20 PM CST | Special Marine Warning | LIX | 85 min | |
| Feb 12, 3:29 PM CST | Special Marine Warning | LIX | 91 min | |
| Feb 12, 4:46 PM CST | Special Marine Warning | LIX | 89 min | |
| Feb 12, 5:52 PM CST | Special Marine Warning | LIX | 38 min | |
| Feb 12, 1:26 PM CST | Tornado Warning | LIX | Pike, Walthall | 34 min |
| Feb 12, 2:32 PM CST | Severe Thunderstorm Warning | LIX | Pearl River | 13 min |
| Feb 12, 2:45 PM CST | Tornado Warning | LIX | Hancock, Pearl River | 15 min |
| Feb 12, 3:00 PM CST | Tornado Warning | LIX | Hancock, Harrison, Pearl River | 15 min |
| Feb 12, 3:15 PM CST | Severe Thunderstorm Warning | LIX | Hancock, Harrison, Jackson | 45 min |
| Feb 12, 3:55 PM CST | Severe Thunderstorm Warning | LIX | Jackson | 20 min |
Nearby
Severe Thunderstorm Warnings in Louisiana, 2008Every severe thunderstorm warning in 2008
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.