Alert archive / Mississippi / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 45, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Apr 15, 2011, 2:06 PM CDT for George County, Greene County, Mississippi. 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 15, 2011, 2:06 PM CDT (19:06 UTC)
- Expired
- Apr 15, 2011, 2:45 PM CDT
- In force
- 39 min
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
Counties George County, MS, Greene County, MS
The radar
The Mobile radar (KMOB), 64 km from the middle of the area, began a volume at 19:06 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 15, 7:32 AM CDT | Tornado Watch | SPC | 7 hr |
| Apr 15, 11:21 AM CDT | Tornado Watch | SPC | 9 hr |
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 7.1 hours before the alert went out and 143 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
- 2339 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 499 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 325 m²/s²
- 0-3 km storm-relative helicity
- 504 m²/s²
- Significant tornado parameter
- 4.8
- Supercell composite
- 21.3
The text
As transmitted, in the capitals the NWS used until 2016.
360
WUUS54 KMOB 151906 RRA
SVRMOB
MSC039-041-151945-
/O.NEW.KMOB.SV.W.0045.110415T1906Z-110415T1945Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
206 PM CDT FRI APR 15 2011
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTH CENTRAL GEORGE COUNTY IN SOUTHEAST MISSISSIPPI...
GREENE COUNTY IN SOUTHEAST MISSISSIPPI...
THIS INCLUDES THE CITY OF LEAKESVILLE...
* UNTIL 245 PM CDT
* AT 201 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 12
MILES WEST OF LUCEDALE...OR NEAR AVENT STATION...AND MOVING
NORTHEAST AT 45 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
LEAKESVILLE AROUND 225 PM CDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT FRIDAY EVENING FOR
SOUTHWESTERN ALABAMA AND SOUTHEAST MISSISSIPPI.
&&
LAT...LON 3137 8856 3123 8844 3103 8843 3093 8876
3104 8883 3107 8883
TIME...MOT...LOC 1906Z 233DEG 37KT 3102 8873
$$3 follow-up statements
546
WWUS54 KMOB 151912
SVSMOB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
212 PM CDT FRI APR 15 2011
MSC039-151922-
/O.CAN.KMOB.SV.W.0045.000000T0000Z-110415T1945Z/
GEORGE MS-
212 PM CDT FRI APR 15 2011
...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL GEORGE COUNTY IS
CANCELLED...
A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT FRIDAY EVENING FOR
SOUTHWESTERN ALABAMA AND SOUTHEAST MISSISSIPPI.
LAT...LON 3108 8844 3101 8870 3109 8881 3137 8856
3123 8844
TIME...MOT...LOC 1912Z 233DEG 37KT 3107 8868
$$
MSC041-151945-
/O.CON.KMOB.SV.W.0045.000000T0000Z-110415T1945Z/
GREENE MS-
212 PM CDT FRI APR 15 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 PM CDT
FOR GREENE COUNTY...
AT 210 PM CDT...NATIONAL WEATHER SERVICE RADAR CONTINUED TO INDICATE
A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS OVER 60 MPH. THIS STORM WAS NEAR VERNAL...OR ABOUT 11
MILES SOUTHWEST OF LEAKESVILLE...MOVING NORTHEAST AT 45 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
HILLMAN AND BRADLEY AROUND 220 PM CDT...
LEAKESVILLE...DUEITT...PISGAH AND JONATHAN AROUND 225 PM CDT...
CLARK AROUND 230 PM CDT...
ROUNSAVILLE AROUND 235 PM CDT...
DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY ON THE
LOWEST FLOOR OF A STURDY BUILDING...PREFERABLY IN AN INTERIOR HALLWAY
OR A ROOM SUCH AS A CLOSET OR BATHROOM.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT FRIDAY EVENING FOR
SOUTHWESTERN ALABAMA AND SOUTHEAST MISSISSIPPI.
LAT...LON 3108 8844 3101 8870 3109 8881 3137 8856
3123 8844
TIME...MOT...LOC 1912Z 233DEG 37KT 3107 8868
$$133
WWUS54 KMOB 151932
SVSMOB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
232 PM CDT FRI APR 15 2011
MSC041-151945-
/O.CON.KMOB.SV.W.0045.000000T0000Z-110415T1945Z/
GREENE MS-
232 PM CDT FRI APR 15 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 PM CDT
FOR GREENE COUNTY...
AT 229 PM CDT... CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS OVER 60 MPH. THIS STORM WAS NEAR DUEITT...OR ABOUT
NEAR LEAKESVILLE...MOVING NORTHEAST AT 45 MPH. ANOTHER STRONG STORM
WAS LOCATED SOUTHWEST OF HILLMAN AND MOVING NORTHEAST AT 45 MPH.
DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY ON THE
LOWEST FLOOR OF A STURDY BUILDING...PREFERABLY IN AN INTERIOR HALLWAY
OR A ROOM SUCH AS A CLOSET OR BATHROOM.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT FRIDAY EVENING FOR
SOUTHWESTERN ALABAMA AND SOUTHEAST MISSISSIPPI.
LAT...LON 3108 8844 3101 8870 3109 8881 3137 8856
3123 8844
TIME...MOT...LOC 1931Z 233DEG 37KT 3119 8850
$$924
WWUS54 KMOB 151944
SVSMOB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
244 PM CDT FRI APR 15 2011
MSC041-151952-
/O.EXP.KMOB.SV.W.0045.000000T0000Z-110415T1945Z/
GREENE MS-
244 PM CDT FRI APR 15 2011
...THE SEVERE THUNDERSTORM WARNING FOR GREENE COUNTY WILL EXPIRE AT
245 PM CDT...
AT 242 PM CDT...THE STORM THAT PROMPTED THE WARNING HAS WEAKENED TO
BELOW SEVERE LIMITS THUS THE SEVERE THUNDERSTORM WARNING WILL BE
ALLOWED TO EXPIRE.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT FRIDAY EVENING FOR
SOUTHWESTERN ALABAMA AND SOUTHEAST MISSISSIPPI.
LAT...LON 3108 8844 3101 8870 3109 8881 3137 8856
3123 8844
TIME...MOT...LOC 1942Z 233DEG 37KT 3126 8839
$$The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 15, 10:15 AM CDT | Tornado Warning | MOB | Wayne | 45 min |
| Apr 15, 10:34 AM CDT | Tornado Warning | MOB | Greene, Perry | 41 min |
| Apr 15, 10:56 AM CDT | Tornado Warning | MOB | Wayne | 49 min |
| Apr 15, 11:09 AM CDT | Tornado Warning | MOB | Greene, Wayne | 51 min |
| Apr 15, 11:35 AM CDT | Tornado Warning | MOB | Wayne | 40 min |
| Apr 15, 5:59 PM CDT | Tornado Warning | MOB | Wayne | 61 min |
| Apr 15, 6:38 PM CDT | Tornado Warning | MOB | Greene, Perry | 37 min |
| Apr 15, 6:44 PM CDT | Tornado Warning | MOB | Wayne | 61 min |
| Apr 15, 6:49 PM CDT | Tornado Warning | MOB | Greene, Perry | 41 min |
Nearby
Severe Thunderstorm Warnings in Mississippi, 2011Every severe thunderstorm warning in 2011
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.