Alert archive / Louisiana / Special Weather Statements in 2021
Special Weather Statement, NWS New Orleans, LA
NWS New Orleans, LA issued this special weather statement at Apr 24, 2021, 5:36 AM CDT for Saint Tammany Parish, Louisiana. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Apr 24, 2021, 5:36 AM CDT (10:36 UTC)
- Expired
- Apr 24, 2021, 6:15 AM CDT
- In force
- 39 min
- Issued by
- NWS New Orleans, LA
County Saint Tammany Parish, LA
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 00:00Z, 10.6 hours before the alert went out and 39 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
- 873 m above ground
- 0-6 km bulk shear
- 62 kt
- 0-1 km storm-relative helicity
- 156 m²/s²
- 0-3 km storm-relative helicity
- 263 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement 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 special weather statement went out at Apr 24, 3:51 AM CDT, 1 hour 45 minutes earlier.
Area forecast discussion, Apr 24, 3:51 AM CDT, 1 hour 45 minutes before
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</html>In the hours before
Special weather statement, Apr 24, 3:00 AM CDT, 2 hours 36 minutes before
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</html>Special weather statement, Apr 24, 3:21 AM CDT, 2 hours 15 minutes before
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</html>Local storm report, Apr 24, 4:15 AM CDT, 1 hour 21 minutes before
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</html>Special weather statement, Apr 24, 4:30 AM CDT, 1 hour 6 minutes before
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</html>Special weather statement, Apr 24, 5:36 AM CDT, 0 minutes before
Special Weather Statement
National Weather Service New Orleans LA
536 AM CDT Sat Apr 24 2021
LAZ072-075-241115-
Northwest St. Tammany-Southern Tangipahoa-
536 AM CDT Sat Apr 24 2021
...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN ST. TAMMANY AND
SOUTHEASTERN TANGIPAHOA PARISHES...
At 535 AM CDT, a strong thunderstorm was located near Madisonville,
or 10 miles southwest of Covington, moving east at 65 mph.
Winds in excess of 30 mph and half inch hail are possible with this
storm.
Locations impacted include...
Slidell, Covington, Abita Springs, Madisonville, Sun, Bush, Lacombe
and Slidell Airport.
This includes Interstate 12 between mile markers 47 and 80.
LAT...LON 3065 8982 3062 8983 3057 8979 3056 8981
3056 8979 3031 8980 3034 9005 3037 9010
3039 9021 3036 9025 3037 9034 3050 9035
3067 8985
TIME...MOT...LOC 1035Z 270DEG 57KT 3041 9028
CABThe office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 23, 9:28 PM CDT | Severe Thunderstorm Warning | LIX | Tangipahoa, Washington | 47 min |
| Apr 23, 10:12 PM CDT | Special Weather Statement | LIX | East Baton Rouge, West Baton Rouge | 33 min |
| Apr 23, 10:34 PM CDT | Severe Thunderstorm Warning | LIX | East Baton Rouge, Livingston, West Baton Rouge | 26 min |
| Apr 23, 10:47 PM CDT | Tornado Warning | LIX | East Baton Rouge, Livingston, West Baton Rouge | 28 min |
| Apr 23, 11:14 PM CDT | Severe Thunderstorm Warning | LIX | Livingston, Saint Helena, Tangipahoa | 31 min |
| Apr 23, 11:46 PM CDT | Severe Thunderstorm Warning | LIX | Saint Tammany, Tangipahoa, Washington | 44 min |
| Apr 24, 12:28 AM CDT | Severe Thunderstorm Warning | LIX | Washington | 47 min |
| Apr 24, 12:56 AM CDT | Special Weather Statement | LIX | East Baton Rouge, East Feliciana, Pointe Coupee, West Baton Rouge, West Feliciana | 64 min |
| Apr 24, 1:36 AM CDT | Special Weather Statement | LIX | Livingston | 24 min |
| Apr 24, 1:43 AM CDT | Special Weather Statement | LIX | Washington | 32 min |
| Apr 24, 1:50 AM CDT | Severe Thunderstorm Warning | LIX | Ascension, East Baton Rouge, Iberville, Livingston, Saint Helena, Tangipahoa | 25 min |
| Apr 24, 2:17 AM CDT | Special Weather Statement | LIX | Ascension, Livingston, Tangipahoa, Washington | 43 min |
| Apr 24, 3:00 AM CDT | Special Weather Statement | LIX | Assumption, Saint James, Saint John the Baptist, Saint Tammany | 60 min |
| Apr 24, 3:02 AM CDT | Special Marine Warning | LIX | 58 min | |
| Apr 24, 3:21 AM CDT | Special Weather Statement | LIX | Ascension, East Baton Rouge, Livingston, Saint John the Baptist, Tangipahoa | 39 min |
| Apr 24, 3:30 AM CDT | Severe Thunderstorm Warning | LIX | Ascension, Livingston, Saint James, Saint John the Baptist, Tangipahoa | 30 min |
| Apr 24, 3:55 AM CDT | Special Marine Warning | LIX | 65 min | |
| Apr 24, 3:59 AM CDT | Special Weather Statement | LIX | Orleans, Saint Charles | 61 min |
| Apr 24, 4:06 AM CDT | Severe Thunderstorm Warning | LIX | Saint Tammany | 24 min |
| Apr 24, 9:44 AM CDT | River Flood Warning | LIX | Tangipahoa | 3 days |
| Apr 24, 9:46 AM CDT | River Flood Warning | LIX | Saint Tammany | 48 hr |
| Apr 24, 11:12 AM CDT | River Flood Warning | LIX | Saint Tammany | 21 days |
| Apr 24, 11:12 AM CDT | River Flood Warning | LIX | Washington | 72 hr |
| Apr 23, 8:17 PM CDT | Special Weather Statement | LIX | Pike, Walthall | 28 min |
| Apr 23, 8:47 PM CDT | Special Weather Statement | LIX | Wilkinson | 28 min |
| Apr 23, 9:20 PM CDT | River Flood Warning | LIX | Pike, Walthall | 70 hr |
| Apr 23, 10:02 PM CDT | Severe Thunderstorm Warning | LIX | Walthall | 13 min |
| Apr 24, 1:16 AM CDT | Special Weather Statement | LIX | Amite, Pike | 59 min |
| Apr 24, 1:26 AM CDT | Severe Thunderstorm Warning | LIX | Amite, Pike, Walthall, Wilkinson | 49 min |
| Apr 24, 1:41 AM CDT | Special Weather Statement | LIX | Pearl River | 34 min |
| Apr 24, 2:35 AM CDT | Special Weather Statement | LIX | Amite, Pike | 40 min |
| Apr 24, 3:42 AM CDT | Severe Thunderstorm Warning | LIX | Pearl River | 18 min |
| Apr 24, 4:30 AM CDT | Special Weather Statement | LIX | Hancock, Harrison | 75 min |
| Apr 24, 4:53 AM CDT | Severe Thunderstorm Warning | LIX | Jackson | 52 min |
| Apr 24, 11:13 AM CDT | River Flood Warning | LIX | Pearl River | 46 hr |
Nearby
Special Weather Statements in Louisiana, 2021Every special weather statement in 2021
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.