Alert archive / Mississippi / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 103, NWS New Orleans, LA
NWS New Orleans, LA issued this severe thunderstorm warning at May 11, 2021, 10:57 AM CDT for Harrison County, Jackson County, Mississippi. It was in force for 48 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 11, 2021, 10:57 AM CDT (15:57 UTC)
- Expired
- May 11, 2021, 11:45 AM CDT
- In force
- 48 min
- Issued by
- NWS New Orleans, LA
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Harrison County, MS, Jackson County, MS
The radar
The Mobile radar (KMOB), 71 km from the middle of the area, began a volume at 15:58 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 4.0 hours before the alert went out and 77 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
- 2600 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 469 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- 56 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 3.1
The text
As transmitted.
521
WUUS54 KLIX 111557
SVRLIX
MSC047-059-111645-
/O.NEW.KLIX.SV.W.0103.210511T1557Z-210511T1645Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service New Orleans LA
1057 AM CDT Tue May 11 2021
The National Weather Service in New Orleans has issued a
* Severe Thunderstorm Warning for...
Southeastern Harrison County in southern Mississippi...
Southwestern Jackson County in southern Mississippi...
* Until 1145 AM CDT.
* At 1056 AM CDT, a severe thunderstorm was located near Biloxi,
moving east at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Gulfport, Biloxi, Ocean Springs, St. Martin, D'iberville, Latimer,
Gulf Hills, Lyman and Gulfport Airport.
This includes the following Interstates...
Interstate 10 in Mississippi between mile markers 33 and 52.
Interstate 110 in Mississippi near mile marker 1, and between mile
markers 3 and 4.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3043 8885 3042 8889 3043 8893 3042 8901
3041 8899 3041 8888 3037 8882 3039 8887
3039 8896 3036 8911 3050 8913 3061 8885
3037 8878
TIME...MOT...LOC 1556Z 250DEG 24KT 3040 8899
HAIL...<.75IN
WIND...60MPH
$$
MEFFER2 follow-up statements
248
WWUS54 KLIX 111619
SVSLIX
Severe Weather Statement
National Weather Service New Orleans LA
1119 AM CDT Tue May 11 2021
MSC047-111629-
/O.CAN.KLIX.SV.W.0103.000000T0000Z-210511T1645Z/
Harrison MS-
1119 AM CDT Tue May 11 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN HARRISON COUNTY
IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 3037 8878 3043 8884 3043 8886 3042 8888
3060 8888 3061 8885 3039 8879 3038 8878
TIME...MOT...LOC 1619Z 250DEG 24KT 3045 8882
$$
MSC059-111645-
/O.CON.KLIX.SV.W.0103.000000T0000Z-210511T1645Z/
Jackson MS-
1119 AM CDT Tue May 11 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 AM CDT
FOR SOUTHWESTERN JACKSON COUNTY...
At 1119 AM CDT, a severe thunderstorm was located over Gulf Hills, or
over St. Martin, moving east at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Ocean Springs, St. Martin, Gulf Hills and Latimer.
This includes Interstate 10 in Mississippi between mile markers 48
and 51.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3037 8878 3043 8884 3043 8886 3042 8888
3060 8888 3061 8885 3039 8879 3038 8878
TIME...MOT...LOC 1619Z 250DEG 24KT 3045 8882
HAIL...<.75IN
WIND...60MPH
$$
MEFFER445
WWUS54 KLIX 111640
SVSLIX
Severe Weather Statement
National Weather Service New Orleans LA
1140 AM CDT Tue May 11 2021
MSC059-111650-
/O.EXP.KLIX.SV.W.0103.000000T0000Z-210511T1645Z/
Jackson MS-
1140 AM CDT Tue May 11 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN JACKSON COUNTY
WILL EXPIRE AT 1145 AM CDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However gusty
winds are still possible with this thunderstorm.
LAT...LON 3037 8878 3043 8884 3043 8886 3042 8888
3060 8888 3061 8885 3039 8879 3038 8878
TIME...MOT...LOC 1640Z 250DEG 24KT 3050 8867
$$
MEFFERThe office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 11, 3:11 AM CDT | Flash Flood Watch | LIX | Amite, Pearl River, Pike, Walthall, Wilkinson | 39 hr |
| May 11, 8:49 AM CDT | Areal Flood Advisory | LIX | Hancock | 116 min |
| May 11, 9:14 AM CDT | Severe Thunderstorm Warning | LIX | Pearl River | 29 min |
| May 11, 9:47 AM CDT | Special Weather Statement | LIX | Pearl River | 43 min |
| May 11, 10:10 AM CDT | River Flood Warning | LIX | Pearl River | 34 hr |
| May 11, 10:10 AM CDT | River Flood Warning | LIX | Pearl River | 33 hr |
| May 11, 10:13 AM CDT | Special Weather Statement | LIX | Hancock | 47 min |
| May 11, 10:34 AM CDT | Special Weather Statement | LIX | Walthall | 56 min |
| May 11, 10:54 AM CDT | Severe Thunderstorm Warning | LIX | Jackson | 51 min |
| May 11, 11:25 AM CDT | Areal Flood Advisory | LIX | Pearl River | 3 hr |
| May 11, 11:42 AM CDT | Special Weather Statement | LIX | Jackson | 63 min |
| May 11, 1:24 PM CDT | Areal Flood Advisory | LIX | Hancock, Pearl River | 66 min |
Nearby
Severe Thunderstorm Warnings in Mississippi, 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; radar from the NEXRAD Level II archive.