Alert archive / Mississippi / Tornado Warnings in 2011

Tornado Warning 37, NWS Mobile, AL

April 15, 2011Wayne County, Mississippi

NWS Mobile, AL issued this tornado warning at Apr 15, 2011, 11:35 AM CDT for Wayne County, Mississippi. It was in force for 40 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, 11:35 AM CDT (16:35 UTC)
Expired
Apr 15, 2011, 12:15 PM CDT
In force
40 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon

County Wayne County, MS

The radar

The Mobile radar (KMOB), 126 km from the middle of the area, began a volume at 16:38 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.

IssuedProductOfficeLasted
Apr 15, 7:32 AM CDTTornado WatchSPC7 hr
Apr 15, 11:21 AM CDTTornado WatchSPC9 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 4.6 hours before the alert went out and 145 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.

Skew-T log-pSkew-T log-p diagram, Jackson, MS at 12:00Z on 2011-04-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1458 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Jackson, MS at 12:00Z on 2011-04-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 382 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1458 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
523 m above ground
0-6 km bulk shear
59 kt
0-1 km storm-relative helicity
382 m²/s²
0-3 km storm-relative helicity
565 m²/s²
Significant tornado parameter
4.0
Supercell composite
14.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

105 
WFUS54 KMOB 151635
TORMOB
MSC153-151715-
/O.NEW.KMOB.TO.W.0037.110415T1635Z-110415T1715Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1135 AM CDT FRI APR 15 2011

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN WAYNE COUNTY IN SOUTHEAST MISSISSIPPI...
  THIS INCLUDES THE CITY OF WAYNESBORO...

* UNTIL 1215 PM CDT

* AT 1128 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR
  WHISTLER...OR 9 MILES WEST OF WAYNESBORO...MOVING NORTHEAST AT 40
  MPH.

* THE TORNADO WILL BE NEAR...
  WEST KING AROUND 1145 AM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT FRIDAY EVENING FOR
SOUTHWESTERN ALABAMA AND SOUTHEAST MISSISSIPPI.

&&

LAT...LON 3183 8879 3186 8848 3164 8848 3156 8878
      3170 8891
TIME...MOT...LOC 1633Z 232DEG 36KT 3169 8876

$$
2 follow-up statements
090 
WWUS54 KMOB 151657 RRA
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1157 AM CDT FRI APR 15 2011

MSC153-151715-
/O.CON.KMOB.TO.W.0037.000000T0000Z-110415T1715Z/
WAYNE MS-
1157 AM CDT FRI APR 15 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1215 PM CDT FOR NORTHERN
WAYNE COUNTY...

AT 1151 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS
TORNADO WAS NEAR BOICE...OR ABOUT 8 MILES NORTH OF WAYNESBORO...
MOVING NORTHEAST AT 35 MPH.

THE TORNADO WILL BE NEAR...
  RURAL NORTHEASTERN WAYNE COUNTY AT 1210 PM CDT

THE SAFEST PLACE TO BE DURING A TORNADO IS ON THE LOWEST FLOOR OF A
STURDY BUILDING...PREFERABLY IN AN INTERIOR HALLWAY OR A ROOM SUCH AS
A CLOSET OR BATHROOM. IF POSSIBLE...GET UNDER A WORKBENCH OR OTHER
PIECE OF STURDY FURNITURE. USE BLANKETS OR PILLOWS TO COVER YOUR BODY
AND ALWAYS STAY AWAY FROM WINDOWS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT FRIDAY EVENING FOR
SOUTHWESTERN ALABAMA AND SOUTHEAST MISSISSIPPI.

LAT...LON 3183 8879 3186 8848 3164 8848 3156 8878
      3170 8891
TIME...MOT...LOC 1656Z 230DEG 31KT 3182 8859

$$
780 
WWUS54 KMOB 151714
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1214 PM CDT FRI APR 15 2011

MSC153-151724-
/O.EXP.KMOB.TO.W.0037.000000T0000Z-110415T1715Z/
WAYNE MS-
1214 PM CDT FRI APR 15 2011

...THE TORNADO WARNING FOR NORTHERN WAYNE COUNTY WILL EXPIRE AT 1215
PM CDT...

THE STORM THAT PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE 
LIMITS.  HOWEVER...A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM 
CDT FRIDAY EVENING FOR SOUTHWESTERN ALABAMA AND SOUTHEAST 
MISSISSIPPI.

LAT...LON 3183 8879 3186 8848 3164 8848 3156 8878
      3170 8891
TIME...MOT...LOC 1714Z 230DEG 31KT 3192 8845

$$

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 15, 10:15 AM CDTTornado WarningMOBWayne45 min
Apr 15, 10:34 AM CDTTornado WarningMOBGreene, Perry41 min
Apr 15, 10:56 AM CDTTornado WarningMOBWayne49 min
Apr 15, 11:09 AM CDTTornado WarningMOBGreene, Wayne51 min
Apr 15, 2:06 PM CDTSevere Thunderstorm WarningMOBGeorge, Greene39 min
Apr 15, 5:59 PM CDTTornado WarningMOBWayne61 min
Apr 15, 6:38 PM CDTTornado WarningMOBGreene, Perry37 min
Apr 15, 6:44 PM CDTTornado WarningMOBWayne61 min
Apr 15, 6:49 PM CDTTornado WarningMOBGreene, Perry41 min

Nearby

Tornado Warnings in Mississippi, 2011Every tornado warning in 2011Tornadoes 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.