Alert archive / Mississippi / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 129, NWS New Orleans, LA
NWS New Orleans, LA issued this severe thunderstorm warning at Jun 21, 2021, 5:18 PM CDT for Hancock County, Mississippi; Saint Tammany Parish, Louisiana. It was in force for 42 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
- Jun 21, 2021, 5:18 PM CDT (22:18 UTC)
- Expired
- Jun 21, 2021, 6:00 PM CDT
- In force
- 42 min
- Issued by
- NWS New Orleans, LA
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Saint Tammany Parish, LA, Hancock County, MS
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 10.3 hours before the alert went out and 10 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
- 730 J/kg
- Mixed-layer CIN
- -82 J/kg
- Mixed-layer LCL
- 990 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 105 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
529
WUUS54 KLIX 212218
SVRLIX
LAC103-MSC045-212300-
/O.NEW.KLIX.SV.W.0129.210621T2218Z-210621T2300Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service New Orleans LA
518 PM CDT Mon Jun 21 2021
The National Weather Service in New Orleans has issued a
* Severe Thunderstorm Warning for...
Southeastern St. Tammany Parish in southeastern Louisiana...
Southwestern Hancock County in southern Mississippi...
* Until 600 PM CDT.
* At 518 PM CDT, a severe thunderstorm was located 7 miles northeast
of New Orleans, moving east at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Slidell, Pearlington and Shoreline Park.
This includes the following Interstates...
Interstate 10 in Louisiana between mile markers 261 and 273.
Interstate 10 in Mississippi between mile markers 1 and 10.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3020 8945 3018 8945 3016 8959 3017 8958
3018 8958 3018 8961 3016 8966 3018 8969
3018 8975 3025 8987 3026 8994 3040 8947
3023 8942
TIME...MOT...LOC 2218Z 253DEG 24KT 3017 8987
HAIL...<.75IN
WIND...60MPH
$$
95/DM2 follow-up statements
678
WWUS54 KLIX 212247
SVSLIX
Severe Weather Statement
National Weather Service New Orleans LA
547 PM CDT Mon Jun 21 2021
LAC103-212257-
/O.CAN.KLIX.SV.W.0129.000000T0000Z-210621T2300Z/
St. Tammany LA-
547 PM CDT Mon Jun 21 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN ST. TAMMANY
PARISH IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
LAT...LON 3020 8945 3018 8945 3018 8946 3019 8946
3018 8952 3020 8954 3018 8957 3021 8959
3027 8961 3035 8963 3040 8947 3023 8942
TIME...MOT...LOC 2247Z 236DEG 42KT 3040 8957 3032 8952 3019 8955
$$
MSC045-212300-
/O.CON.KLIX.SV.W.0129.000000T0000Z-210621T2300Z/
Hancock MS-
547 PM CDT Mon Jun 21 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM CDT
FOR SOUTHWESTERN HANCOCK COUNTY...
At 547 PM CDT, severe thunderstorms were located along a line
extending from near Stennis Space Center to 6 miles west of Shoreline
Park to near Pearlington, moving northeast at 50 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Pearlington and Shoreline Park.
This includes Interstate 10 in Mississippi between mile markers 2 and
10.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3020 8945 3018 8945 3018 8946 3019 8946
3018 8952 3020 8954 3018 8957 3021 8959
3027 8961 3035 8963 3040 8947 3023 8942
TIME...MOT...LOC 2247Z 236DEG 42KT 3040 8957 3032 8952 3019 8955
HAIL...<.75IN
WIND...60MPH
$$
95/DM547
WWUS54 KLIX 212256
SVSLIX
Severe Weather Statement
National Weather Service New Orleans LA
556 PM CDT Mon Jun 21 2021
MSC045-212306-
/O.EXP.KLIX.SV.W.0129.000000T0000Z-210621T2300Z/
Hancock MS-
556 PM CDT Mon Jun 21 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN HANCOCK COUNTY
WILL EXPIRE AT 600 PM CDT...
The storms which prompted the warning have weakened below severe
limits. Therefore, the warning will be allowed to expire. However,
gusty winds of up to 40 mph and heavy rain are still possible with
these thunderstorms.
LAT...LON 3020 8945 3018 8945 3018 8946 3019 8946
3018 8952 3020 8954 3018 8957 3021 8959
3027 8961 3035 8963 3040 8947 3023 8942
TIME...MOT...LOC 2256Z 253DEG 24KT 3042 8951 3034 8946 3021 8949
$$
95/DMThe office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 2:11 PM CDT | Areal Flood Advisory | LIX | Harrison | 91 min |
| Jun 21, 2:55 PM CDT | Flash Flood Warning | LIX | Harrison, Jackson | 67 min |
| Jun 21, 4:36 PM CDT | Special Weather Statement | LIX | Hancock, Pearl River | 24 min |
| Jun 21, 4:57 PM CDT | Areal Flood Advisory | LIX | Hancock, Harrison, Pearl River | 3 hr |
| Jun 21, 5:49 PM CDT | Areal Flood Advisory | LIX | Hancock, Harrison | 3 hr |
| Jun 21, 5:50 PM CDT | Special Weather Statement | LIX | Amite | 25 min |
| Jun 21, 5:55 PM CDT | Flash Flood Warning | LIX | Hancock, Harrison | 3 hr |
| Jun 21, 5:55 PM CDT | Special Weather Statement | LIX | Hancock, Harrison | 50 min |
| Jun 21, 6:24 PM CDT | Special Weather Statement | LIX | Amite, Pike | 66 min |
| Jun 21, 6:32 PM CDT | Special Weather Statement | LIX | Jackson | 58 min |
| Jun 21, 6:51 PM CDT | Flash Flood Warning | LIX | Harrison, Jackson | 3 hr |
| Jun 21, 8:59 AM CDT | Special Weather Statement | LIX | East Baton Rouge, Livingston | 46 min |
| Jun 21, 10:15 AM CDT | Special Weather Statement | LIX | Livingston | 30 min |
| Jun 21, 10:26 AM CDT | Special Marine Warning | LIX | 94 min | |
| Jun 21, 10:31 AM CDT | Special Marine Warning | LIX | 119 min | |
| Jun 21, 10:52 AM CDT | Severe Thunderstorm Warning | LIX | Saint Tammany, Tangipahoa | 33 min |
| Jun 21, 10:59 AM CDT | Special Marine Warning | LIX | 61 min | |
| Jun 21, 12:25 PM CDT | Special Marine Warning | LIX | 2 hr | |
| Jun 21, 12:33 PM CDT | Special Weather Statement | LIX | Saint James | 57 min |
| Jun 21, 1:11 PM CDT | Severe Thunderstorm Warning | LIX | Terrebonne | 64 min |
| Jun 21, 2:21 PM CDT | Special Marine Warning | LIX | 39 min | |
| Jun 21, 2:39 PM CDT | Areal Flood Advisory | LIX | Jefferson, Orleans, Saint Bernard, Saint Charles | 3 hr |
| Jun 21, 2:51 PM CDT | Special Marine Warning | LIX | 84 min | |
| Jun 21, 3:03 PM CDT | Severe Thunderstorm Warning | LIX | Terrebonne | 42 min |
| Jun 21, 3:28 PM CDT | Areal Flood Advisory | LIX | Saint Tammany | 29 min |
| Jun 21, 3:28 PM CDT | Special Weather Statement | LIX | Saint Tammany | 32 min |
| Jun 21, 3:39 PM CDT | Flash Flood Warning | LIX | Jefferson, Orleans, Saint Charles | 3 hr |
| Jun 21, 3:39 PM CDT | Special Weather Statement | LIX | Lafourche | 36 min |
| Jun 21, 3:43 PM CDT | Special Marine Warning | LIX | 92 min | |
| Jun 21, 3:53 PM CDT | Areal Flood Advisory | LIX | Lafourche, Saint Charles, Terrebonne | 3 hr |
| Jun 21, 3:57 PM CDT | Flash Flood Warning | LIX | Saint Tammany | 2 hr |
| Jun 21, 4:16 PM CDT | Severe Thunderstorm Warning | LIX | Jefferson, Orleans, Saint Charles, Saint John the Baptist | 44 min |
| Jun 21, 4:24 PM CDT | Special Marine Warning | LIX | 96 min | |
| Jun 21, 4:29 PM CDT | Special Weather Statement | LIX | Iberville, Pointe Coupee, West Feliciana | 31 min |
| Jun 21, 5:04 PM CDT | Special Weather Statement | LIX | East Feliciana | 56 min |
| Jun 21, 5:10 PM CDT | Special Marine Warning | LIX | 54 min | |
| Jun 21, 5:59 PM CDT | Special Marine Warning | LIX | 31 min | |
| Jun 21, 6:38 PM CDT | Special Marine Warning | LIX | 52 min |
Nearby
Severe Thunderstorm Warnings in Mississippi, 2021Severe 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.