Alert archive / Louisiana / Severe Thunderstorm Warnings in 2013
Severe Thunderstorm Warning 50, NWS New Orleans, LA
NWS New Orleans, LA issued this severe thunderstorm warning at Feb 25, 2013, 2:24 PM CST for 5 parishes in Louisiana. It was in force for 51 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 25, 2013, 2:24 PM CST (20:24 UTC)
- Expired
- Feb 25, 2013, 3:15 PM CST
- In force
- 51 min
- Issued by
- NWS New Orleans, LA
- Area
- Storm-based polygon
Counties Ascension Parish, LA, East Baton Rouge Parish, LA, Iberville Parish, LA, Livingston Parish, LA, Tangipahoa 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 25, 12:26 PM CST | Tornado Watch | SPC | 10 hr |
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 8.4 hours before the alert went out and 116 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
- 44 J/kg
- Mixed-layer CIN
- -247 J/kg
- Mixed-layer LCL
- 490 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 96 m²/s²
- 0-3 km storm-relative helicity
- 218 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.2
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 25, 7:14 AM CST, 7 hours 10 minutes earlier.
Area forecast discussion, Feb 25, 7:14 AM CST, 7 hours 10 minutes before
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</html>Hazardous weather outlook, Feb 25, 11:49 AM CST, 2 hours 35 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE NEW ORLEANS LA 1149 AM CST MON FEB 25 2013 GMZ530-532-534-536-538-550-552-555-557-570-572-575-577-LAZ034>037- 039-040-046>050-056>072-MSZ068>071-077-080>082-260600- LAKE PONTCHARTRAIN AND LAKE MAUREPAS-MISSISSIPPI SOUND- LAKE BORGNE-CHANDELEUR SOUND-BRETON SOUND- COASTAL WATERS FROM PORT FOURCHON TO LOWER ATCHAFALAYA RIVER OUT 20 NM- COASTAL WATERS FROM THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER TO PORT FOURCHON OUT 20 NM- COASTAL WATERS FROM BOOTHVILLE LA TO THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER OUT 20 NM- COASTAL WATERS FROM PASCAGOULA MS TO STAKE ISLAND LA OUT 20 NM- COASTAL WATERS FROM PORT FOURCHON TO LOWER ATCHAFALAYA RIVER FROM 20 TO 60 NM- COASTAL WATERS FROM THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER TO PORT FOURCHON FROM 20 TO 60 NM- COASTAL WATERS FROM STAKE ISLAND LA TO THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER FROM 20 TO 60 NM- COASTAL WATERS FROM PASCAGOULA MS TO STAKE ISLAND LA FROM 20 TO 60 NM-POINTE COUPEE-WEST FELICIANA-EAST FELICIANA-ST. HELENA- 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-NORTHERN TANGIPAHOA- SOUTHERN TANGIPAHOA-WILKINSON-AMITE-PIKE-WALTHALL-PEARL RIVER- HANCOCK-HARRISON-JACKSON- 1149 AM CST MON FEB 25 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST LOUISIANA...SOUTH MISSISSIPPI AND THE ADJACENT COASTAL WATERS. .DAY ONE...THIS AFTERNOON AND TONIGHT WIDESPREAD RAIN AND SCATTERED THUNDERSTORMS WILL CONTINUE TO DEVELOP ACROSS SOUTHEAST LOUISIANA AND SOUTH MISSISSIPPI. A FEW OF THE STORMS WILL BECOME SEVERE AND PRODUCE HAIL UP TO GOLFBALL SIZE AND DAMAGING WINDS. A WARM FRONT WILL START TO MOVE INLAND ALONG THE SOUTHEAST LOUISIANA COAST. ANY STORMS THAT CAN DEVELOP NEAR OR SOUTH OF THIS FRONT WILL HAVE THE POTENTIAL TO PRODUCE ISOLATED TORNADOES OR WATERSPOUTS. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON. A FLASH FLOOD WATCH IS IN EFFECT FOR MUCH OF EAST CENTRAL AND SOUTHEAST LOUISIANA...AND SOUTH MISSISSIPPI. FLASH FLOODING WILL BE POSSIBLE WHERE REPEAT HEAVY RAIN OCCURS THROUGH THIS EVENING. STORM TOTALS OF 3 TO 5 INCHES EXPECTED ACROSS MUCH OF THE AREA WITH LOCALLY HIGHER AMOUNTS POSSIBLE. A WIND ADVISORY IS IN EFFECT FOR THE SOUTHSHORE WITH WEST WINDS INCREASING TO 20 TO 30 MPH TUESDAY. A GALE WARNING IS IN EFFECT FOR THE COASTAL WATERS THROUGH TONIGHT. IN ADDITION...A SMALL CRAFT ADVISORY ON TIDAL LAKES AND SOUNDS IS IN EFFECT TONIGHT. MULTIPLE RIVER FLOOD WARNINGS REMAIN IN EFFECT ACROSS THE AREA. REFER TO THE LATEST RIVER FLOOD WARNINGS AND STATEMENTS FOR DETAILS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY A WIND ADVISORY IS IN EFFECT FOR THE SOUTHSHORE WITH WEST WINDS INCREASING UP TO 20 TO 30 MPH ON TUESDAY. A GALE WARNING IS IN EFFECT FOR THE COASTAL WATERS ON TUESDAY. IN ADDITION...A SMALL CRAFT ADVISORY ON TIDAL LAKES AND SOUNDS IS IN EFFECT ON TUESDAY. A DRY COLD FRONT IS EXPECTED TO PUSH THROUGH THE AREA LATE FRIDAY. SEVERAL AREAS MAY EXPERIENCE A FREEZE SATURDAY AND SUNDAY MORNINGS. PLEASE REFER TO THE LATEST RIVER FLOOD STATEMENTS FOR ONGOING FLOODING AT SEVERAL LOCATIONS THROUGH THE OUTLOOK PERIOD. .SPOTTER INFORMATION STATEMENT... ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS...AND EMERGENCY MANAGEMENT PERSONNEL IS REQUESTED FOR THIS AFTERNOON AND THIS EVENING. 24/RR
In the hours before
Special weather statement, Feb 25, 12:46 PM CST, 1 hour 38 minutes before
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</html>Special weather statement, Feb 25, 12:48 PM CST, 1 hour 36 minutes before
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</html>The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 24, 6:14 PM CST | Severe Thunderstorm Warning | LIX | Lafourche, Saint Charles, Saint John the Baptist | 31 min |
| Feb 24, 6:30 PM CST | Severe Thunderstorm Warning | LIX | Jefferson, Plaquemines, Saint Bernard | 45 min |
| Feb 24, 6:41 PM CST | Severe Thunderstorm Warning | LIX | Jefferson, Saint Charles | 49 min |
| Feb 24, 6:45 PM CST | Severe Thunderstorm Warning | LIX | Assumption, Lafourche, Terrebonne | 45 min |
| Feb 24, 6:57 PM CST | Special Marine Warning | LIX | 63 min | |
| Feb 24, 7:02 PM CST | Severe Thunderstorm Warning | LIX | Saint John the Baptist | 28 min |
| Feb 24, 7:10 PM CST | Special Marine Warning | LIX | 50 min | |
| Feb 24, 7:23 PM CST | Severe Thunderstorm Warning | LIX | Lafourche, Terrebonne | 52 min |
| Feb 24, 7:41 PM CST | Severe Thunderstorm Warning | LIX | Assumption, Lafourche, Saint James, Terrebonne | 49 min |
| Feb 24, 7:56 PM CST | Special Marine Warning | LIX | 64 min | |
| Feb 24, 8:08 PM CST | Severe Thunderstorm Warning | LIX | Lafourche, Saint Charles, Saint John the Baptist | 52 min |
| Feb 24, 8:52 PM CST | Severe Thunderstorm Warning | LIX | Jefferson, Orleans, Plaquemines, Saint Bernard, Saint Charles | 38 min |
| Feb 24, 8:58 PM CST | Special Marine Warning | LIX | 62 min | |
| Feb 24, 9:26 PM CST | Severe Thunderstorm Warning | LIX | Jefferson, Orleans, Plaquemines, Saint Bernard | 34 min |
| Feb 24, 9:36 PM CST | Special Marine Warning | LIX | 54 min | |
| Feb 24, 9:45 PM CST | Special Marine Warning | LIX | 45 min | |
| Feb 24, 9:56 PM CST | Severe Thunderstorm Warning | LIX | Saint Bernard | 34 min |
| Feb 24, 10:07 PM CST | Severe Thunderstorm Warning | LIX | Saint Tammany | 38 min |
| Feb 24, 10:14 PM CST | River Flood Warning | LIX | Tangipahoa | 3 days |
| Feb 24, 10:21 PM CST | Areal Flood Advisory | LIX | Ascension, East Baton Rouge, Iberville, West Baton Rouge | 114 min |
| Feb 24, 11:04 PM CST | Special Marine Warning | LIX | 56 min | |
| Feb 24, 11:17 PM CST | Severe Thunderstorm Warning | LIX | Ascension, Livingston | 28 min |
| Feb 24, 11:28 PM CST | Severe Thunderstorm Warning | LIX | Ascension, Assumption, Iberville, Saint James | 32 min |
| Feb 24, 11:44 PM CST | Severe Thunderstorm Warning | LIX | Livingston, Tangipahoa | 46 min |
| Feb 24, 11:57 PM CST | Severe Thunderstorm Warning | LIX | Ascension, Saint James, Saint John the Baptist | 48 min |
| Feb 25, 12:02 AM CST | Special Marine Warning | LIX | 28 min | |
| Feb 25, 12:04 AM CST | Special Marine Warning | LIX | 41 min | |
| Feb 25, 12:29 AM CST | Severe Thunderstorm Warning | LIX | Saint Tammany, Tangipahoa | 46 min |
| Feb 25, 12:49 AM CST | Special Marine Warning | LIX | 26 min | |
| Feb 25, 3:06 AM CST | Areal Flood Advisory | LIX | Jefferson, Orleans | 114 min |
| Feb 25, 3:11 AM CST | Severe Thunderstorm Warning | LIX | Ascension, Livingston, Saint James, Saint John the Baptist | 34 min |
| Feb 25, 3:12 AM CST | Gale Warning | LIX | 30 hr | |
| Feb 25, 3:12 AM CST | Small Craft Advisory | LIX | 21 hr | |
| Feb 25, 3:42 AM CST | Severe Thunderstorm Warning | LIX | Livingston, Saint John the Baptist, Saint Tammany, Tangipahoa | 33 min |
| Feb 25, 3:55 AM CST | River Flood Warning | LIX | Saint Tammany | 3 days |
| Feb 25, 3:55 AM CST | Special Marine Warning | LIX | 50 min | |
| Feb 25, 4:15 AM CST | Flash Flood Warning | LIX | Saint Tammany | 3 hr |
| Feb 25, 4:32 AM CST | Areal Flood Advisory | LIX | Saint Tammany, Tangipahoa | 58 min |
| Feb 25, 4:43 AM CST | Wind Advisory | LIX | Saint Bernard, Saint John the Baptist | 34 hr |
| Feb 25, 4:48 AM CST | Special Marine Warning | LIX | 87 min | |
| Feb 25, 5:01 AM CST | River Flood Warning | LIX | Saint Tammany | 52 hr |
| Feb 25, 5:02 AM CST | Special Marine Warning | LIX | 28 min | |
| Feb 25, 6:22 AM CST | River Flood Warning | LIX | Saint Tammany | 3 days |
| Feb 25, 6:23 AM CST | River Flood Warning | LIX | Saint Tammany | 33 hr |
| Feb 25, 2:26 PM CST | Severe Thunderstorm Warning | LIX | Saint Tammany, Washington | 49 min |
| Feb 25, 3:07 PM CST | Special Marine Warning | LIX | 23 min | |
| Feb 25, 3:07 PM CST | Severe Thunderstorm Warning | LIX | West Feliciana | 38 min |
| Feb 25, 3:26 PM CST | Special Marine Warning | LIX | 19 min | |
| Feb 25, 3:29 PM CST | Severe Thunderstorm Warning | LIX | Lafourche, Terrebonne | 46 min |
| Feb 25, 5:00 PM CST | Special Marine Warning | LIX | 45 min | |
| Feb 25, 5:29 PM CST | Special Marine Warning | LIX | 91 min | |
| Feb 25, 5:31 PM CST | Special Marine Warning | LIX | 44 min | |
| Feb 25, 5:40 PM CST | Tornado Warning | LIX | Jefferson, Plaquemines | 35 min |
| Feb 25, 12:22 AM CST | Severe Thunderstorm Warning | LIX | Jackson | 23 min |
| Feb 25, 2:40 AM CST | Severe Thunderstorm Warning | LIX | Harrison, Jackson | 35 min |
| Feb 25, 3:17 AM CST | Severe Thunderstorm Warning | LIX | Harrison, Jackson | 43 min |
| Feb 25, 3:28 AM CST | Severe Thunderstorm Warning | LIX | Jackson | 62 min |
| Feb 25, 8:21 AM CST | River Flood Warning | LIX | Harrison | 50 hr |
Nearby
Severe Thunderstorm Warnings in Louisiana, 2013Every severe thunderstorm warning in 2013
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.