Alert archive / Mississippi / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 11, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Feb 18, 2012, 12:39 PM CST for Perry County, Stone County, Mississippi. It was in force for 51 min. 3 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Feb 18, 2012, 12:39 PM CST (18:39 UTC)
- Expired
- Feb 18, 2012, 1:30 PM CST
- In force
- 51 min
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
Counties Perry County, MS, Stone County, MS
The radar
The Mobile radar (KMOB), 85 km from the middle of the area, began a volume at 18:41 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Feb 18, 1:10 PM CST | TSTM WND DMG | 1 N Wiggins, MS | SEVERAL TREES BLOWN OVER IN HIGH THUNDERSTORM WINDS. |
| Feb 18, 1:10 PM CST | HAIL 1.75 | 1 W Perkinston, MS | |
| Feb 18, 1:20 PM CST | TSTM WND DMG | Whites Crossing, MS | SEVERAL TREES AND POWER LINES BLOWN DOWN FROM THUNDERSTORM WINDS. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Feb 18, 11:49 AM CST | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 6.7 hours before the alert went out and 86 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
- 449 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 160 m²/s²
- 0-3 km storm-relative helicity
- 177 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
982
WUUS54 KMOB 181839
SVRMOB
MSC111-131-181930-
/O.NEW.KMOB.SV.W.0011.120218T1839Z-120218T1930Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1239 PM CST SAT FEB 18 2012
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHERN PERRY COUNTY IN SOUTHEAST MISSISSIPPI...
STONE COUNTY IN SOUTHEAST MISSISSIPPI...
* UNTIL 130 PM CST
* AT 1238 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM 23 MILES WEST OF WIGGINS TO 25
MILES WEST OF WIGGINS TO 19 MILES NORTHWEST OF DIAMONDHEAD...AND
MOVING EAST AT 50 MPH.
* LOCATIONS IMPACTED INCLUDE...
WIGGINS... PERKINSTON... MCHENRY...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. 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.
THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND HAIL UP
TO ONE-HALF INCH. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND
STAY AWAY FROM WINDOWS!
&&
LAT...LON 3091 8935 3092 8934 3091 8915 3105 8915
3107 8884 3091 8883 3091 8888 3068 8888
3067 8889 3067 8923 3064 8924 3065 8935
TIME...MOT...LOC 1838Z 264DEG 43KT 3093 8949 3074 8951
3057 8959
$$
JP/MB2 follow-up statements
468
WWUS54 KMOB 181857
SVSMOB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1257 PM CST SAT FEB 18 2012
MSC111-131-181930-
/O.CON.KMOB.SV.W.0011.000000T0000Z-120218T1930Z/
STONE MS-PERRY MS-
1257 PM CST SAT FEB 18 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 130 PM CST
FOR SOUTHERN PERRY AND STONE COUNTIES...
AT 1256 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER
SIZE HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THESE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM 11 MILES NORTHWEST OF
WIGGINS TO 13 MILES SOUTHWEST OF WIGGINS TO 13 MILES NORTH OF
DIAMONDHEAD...MOVING EAST AT 40 MPH.
OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BOND...
TEN MILE...PERKINSTON...PERRY...INDIA...MCHENRY...WLOX TV STATION
TOWER...BIG LEVEL...WHITES CROSSING...JANICE...BATT PLACE...
BARBARA...OAK GROVE...BEATRICE...DEEP CREEK AND RAMSEY SPRINGS
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 PM CST SATURDAY AFTERNOON
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.
&&
LAT...LON 3091 8935 3092 8934 3091 8915 3105 8915
3107 8884 3091 8883 3091 8888 3068 8888
3067 8889 3067 8923 3064 8924 3065 8935
TIME...MOT...LOC 1856Z 267DEG 36KT 3094 8929 3075 8931
3058 8939
$$
JP/MB923
WWUS54 KMOB 181922
SVSMOB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
122 PM CST SAT FEB 18 2012
MSC111-181932-
/O.CAN.KMOB.SV.W.0011.000000T0000Z-120218T1930Z/
PERRY MS-
122 PM CST SAT FEB 18 2012
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN PERRY COUNTY IS
CANCELLED...
A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 PM CST SATURDAY AFTERNOON
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.
LAT...LON 3091 8888 3080 8888 3080 8889 3073 8888
3068 8888 3067 8889 3067 8913 3091 8914
TIME...MOT...LOC 1922Z 267DEG 47KT 3088 8894 3073 8893
3060 8897
$$
MSC131-181930-
/O.CON.KMOB.SV.W.0011.000000T0000Z-120218T1930Z/
STONE MS-
122 PM CST SAT FEB 18 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 130 PM CST
FOR EASTERN STONE COUNTY...
AT 118 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER
SIZE HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THESE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM 8 MILES EAST OF WIGGINS TO
12 MILES SOUTHEAST OF WIGGINS TO 14 MILES NORTHWEST OF
BILOXI...MOVING EAST AT 55 MPH.
OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO RAMSEY
SPRINGS
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 PM CST SATURDAY AFTERNOON
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.
&&
LAT...LON 3091 8888 3080 8888 3080 8889 3073 8888
3068 8888 3067 8889 3067 8913 3091 8914
TIME...MOT...LOC 1922Z 267DEG 47KT 3088 8894 3073 8893
3060 8897
$$
JP/MBThe office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 18, 9:48 AM CST | River Flood Warning | MOB | George, Greene, Perry | 6 days |
| Feb 18, 9:48 AM CST | River Flood Warning | MOB | George, Greene, Wayne | 6 days |
| Feb 18, 1:13 PM CST | Severe Thunderstorm Warning | MOB | George, Stone | 47 min |
| Feb 18, 1:17 PM CST | Tornado Warning | MOB | George, Stone | 13 min |
| Feb 18, 1:35 PM CST | Areal Flood Advisory | MOB | Perry, Stone | 115 min |
| Feb 18, 1:36 PM CST | Tornado Warning | MOB | George, Greene | 39 min |
| Feb 18, 1:56 PM CST | Severe Thunderstorm Warning | MOB | George | 49 min |
| Feb 18, 2:28 PM CST | Flash Flood Warning | MOB | George, Greene, Perry, Stone | 32 days |
| Feb 18, 4:05 PM CST | Areal Flood Warning | MOB | George, Greene, Perry, Stone, Wayne | 34 days |
| Feb 18, 4:30 PM CST | Flash Flood Warning | MOB | George, Greene, Perry | 60 min |
Nearby
Severe Thunderstorm Warnings in Mississippi, 2012Every severe thunderstorm warning in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.