Alert archive / Louisiana / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 95, NWS New Orleans, LA
NWS New Orleans, LA issued this severe thunderstorm warning at May 10, 2021, 1:54 AM CDT for Ascension Parish, Assumption Parish, Saint James Parish, 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 outline as issued.
The facts
- Issued
- May 10, 2021, 1:54 AM CDT (06:54 UTC)
- Expired
- May 10, 2021, 2:45 AM CDT
- In force
- 51 min
- Issued by
- NWS New Orleans, LA
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Ascension Parish, LA, Assumption Parish, LA, Saint James Parish, LA
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 00:00Z, 6.9 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
- 186 J/kg
- Mixed-layer CIN
- -87 J/kg
- Mixed-layer LCL
- 1292 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 74 m²/s²
- 0-3 km storm-relative helicity
- 128 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.2
The text
As transmitted.
046
WUUS54 KLIX 100654
SVRLIX
LAC005-007-093-100745-
/O.NEW.KLIX.SV.W.0095.210510T0654Z-210510T0745Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service New Orleans LA
154 AM CDT Mon May 10 2021
The National Weather Service in New Orleans has issued a
* Severe Thunderstorm Warning for...
Southeastern Ascension Parish in southeastern Louisiana...
Northern St. James Parish in southeastern Louisiana...
Northeastern Assumption Parish in southeastern Louisiana...
* Until 245 AM CDT.
* At 153 AM CDT, a severe thunderstorm was located near
Donaldsonville, moving east at 20 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
Donaldsonville, Gramercy, Lutcher, Sorrento and Garyville.
This includes Interstate 10 in Louisiana between mile markers 184 and
194.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Large hail and damaging winds and continuous cloud to ground
lightning is occurring with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.
&&
LAT...LON 3024 9075 3010 9067 3007 9066 2999 9097
3008 9102
TIME...MOT...LOC 0653Z 249DEG 18KT 3006 9094
TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
$$1 follow-up statement
492
WWUS54 KLIX 100723
SVSLIX
Severe Weather Statement
National Weather Service New Orleans LA
223 AM CDT Mon May 10 2021
LAC007-100733-
/O.CAN.KLIX.SV.W.0095.000000T0000Z-210510T0745Z/
Assumption LA-
223 AM CDT Mon May 10 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN ASSUMPTION PARISH
IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 3005 9089 3021 9078 3019 9072 3010 9067
3007 9066 3002 9084
TIME...MOT...LOC 0723Z 293DEG 37KT 3007 9069
$$
LAC005-093-100745-
/O.CON.KLIX.SV.W.0095.000000T0000Z-210510T0745Z/
Ascension LA-St. James LA-
223 AM CDT Mon May 10 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 AM CDT
FOR EAST CENTRAL ASCENSION AND NORTHEASTERN ST. JAMES PARISHES...
At 223 AM CDT, a severe thunderstorm was located over Gramercy, or 8
miles west of Reserve, moving southeast at 40 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Gramercy, Lutcher and Garyville.
This includes Interstate 10 in Louisiana between mile markers 187 and
194.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
&&
LAT...LON 3005 9089 3021 9078 3019 9072 3010 9067
3007 9066 3002 9084
TIME...MOT...LOC 0723Z 293DEG 37KT 3007 9069
TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
$$The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 8:48 PM CDT | Flash Flood Watch | LIX | Assumption, East Baton Rouge, East Feliciana, Iberville, Orleans, Pointe Coupee and 9 more | 15 hr |
| May 10, 1:00 AM CDT | Special Weather Statement | LIX | Ascension, Livingston | 60 min |
| May 10, 1:29 AM CDT | Areal Flood Advisory | LIX | Ascension, Assumption, Iberville, Saint James | 70 min |
| May 10, 1:49 AM CDT | Special Weather Statement | LIX | Assumption, Saint James, Saint John the Baptist | 56 min |
| May 10, 2:01 AM CDT | Special Marine Warning | LIX | 59 min | |
| May 10, 2:43 AM CDT | Areal Flood Advisory | LIX | Jefferson, Orleans, Plaquemines, Saint Bernard, Saint Charles | 2 hr |
| May 10, 2:52 AM CDT | Special Marine Warning | LIX | 53 min | |
| May 10, 2:57 AM CDT | Flash Flood Warning | LIX | Jefferson, Orleans, Saint Charles | 9 hr |
| May 10, 3:25 AM CDT | Special Weather Statement | LIX | Orleans | 35 min |
| May 10, 3:37 AM CDT | Special Marine Warning | LIX | 113 min | |
| May 10, 3:41 AM CDT | Tornado Warning | LIX | Orleans, Plaquemines, Saint Bernard | 18 min |
| May 10, 4:20 AM CDT | Flash Flood Warning | LIX | Jefferson, Orleans, Plaquemines, Saint Bernard | 115 min |
| May 10, 5:26 AM CDT | Special Marine Warning | LIX | 64 min | |
| May 10, 5:29 AM CDT | Special Marine Warning | LIX | 2 hr | |
| May 10, 5:38 AM CDT | Special Weather Statement | LIX | West Baton Rouge | 67 min |
| May 10, 6:04 AM CDT | Special Weather Statement | LIX | East Baton Rouge, West Baton Rouge | 56 min |
| May 10, 6:16 AM CDT | Special Weather Statement | LIX | Saint Charles | 44 min |
| May 10, 6:36 AM CDT | Special Marine Warning | LIX | 54 min | |
| May 10, 7:25 AM CDT | Special Weather Statement | LIX | Saint John the Baptist | 50 min |
| May 10, 7:34 AM CDT | Special Marine Warning | LIX | 56 min | |
| May 10, 7:51 AM CDT | Severe Thunderstorm Warning | LIX | Iberville, Pointe Coupee, West Baton Rouge | 54 min |
| May 10, 8:23 AM CDT | Special Marine Warning | LIX | 67 min | |
| May 10, 8:28 AM CDT | Severe Thunderstorm Warning | LIX | Ascension, East Baton Rouge, Iberville, Livingston, Pointe Coupee, West Baton Rouge | 62 min |
| May 10, 9:16 AM CDT | Severe Thunderstorm Warning | LIX | Ascension, Assumption, East Baton Rouge, Iberville, Livingston, Saint James and 2 more | 44 min |
| May 10, 9:38 AM CDT | Tornado Warning | LIX | Ascension, Livingston, Saint James, Saint John the Baptist | 20 min |
| May 10, 9:57 AM CDT | Special Weather Statement | LIX | Assumption, Orleans, Saint Charles, Saint James, Saint John the Baptist, Saint Tammany | 63 min |
| May 10, 10:29 AM CDT | Special Marine Warning | LIX | 61 min | |
| May 10, 11:08 AM CDT | Special Weather Statement | LIX | Orleans | 52 min |
| May 10, 11:17 AM CDT | Special Marine Warning | LIX | 58 min | |
| May 10, 12:10 PM CDT | Special Marine Warning | LIX | 65 min | |
| May 10, 12:14 PM CDT | Special Marine Warning | LIX | 91 min | |
| May 10, 1:08 PM CDT | Special Marine Warning | LIX | 67 min | |
| May 10, 1:44 PM CDT | Special Marine Warning | LIX | 28 min | |
| May 10, 2:09 PM CDT | Special Marine Warning | LIX | 66 min | |
| May 10, 3:09 PM CDT | Special Marine Warning | LIX | 96 min |
Nearby
Severe Thunderstorm Warnings in Louisiana, 2021Every severe thunderstorm warning 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.