Alert archive / Mississippi / Tornado Warnings in 2008

Tornado Warning 52, NWS Mobile, AL

April 18, 2008Greene County, Mississippi

NWS Mobile, AL issued this tornado warning at Apr 18, 2008, 7:36 PM CDT for Greene County, Mississippi. It was in force for 39 min. 1 report 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
Apr 18, 2008, 7:36 PM CDT (00:36 UTC)
Expired
Apr 18, 2008, 8:15 PM CDT
In force
39 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon

County Greene County, MS

The radar

The Mobile radar (KMOB), 76 km from the middle of the area, began a volume at 00:39 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

TimeReportWhereRemark
Apr 18, 7:40 PM CDTTSTM WND GST 70Avera, MSESTIMATED WIND GUST OF 70 MPH AND HAIL OF UNKNOWN SIZE IN AVERA.

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.

IssuedProductOfficeLasted
Apr 18, 3:43 PM CDTTornado WatchSPC7 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 0.6 hours before the alert went out and 155 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, Slidell Radar S, LA at 00:00Z on 2008-04-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 695 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 00:00Z on 2008-04-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 396 square meters per square second.19395878Sfc1 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
695 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
712 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
396 m²/s²
0-3 km storm-relative helicity
515 m²/s²
Significant tornado parameter
1.8
Supercell composite
9.2

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KMOB 190036
TORMOB
MSC041-190115-
/O.NEW.KMOB.TO.W.0052.080419T0036Z-080419T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOBILE AL
736 PM CDT FRI APR 18 2008

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN GREENE COUNTY IN SOUTHEAST MISSISSIPPI...

* UNTIL 815 PM CDT

* AT 730 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR AVERA...OR
  ABOUT 15 MILES NORTHWEST OF LEAKESVILLE...MOVING EAST AT 30 MPH.

* THE TORNADO WILL BE NEAR...
  RURAL CENTRAL GREENE COUNTY AT 750 PM CDT
  RURAL NORTHEASTERN GREENE COUNTY AT 800 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. IN ADDITION TO THE TORNADO...THIS
STORM IS CAPABLE OF PRODUCING LARGE DAMAGING HAIL OR DAMAGING
STRAIGHT LINE WINDS.

IF YOU ARE IN MOBILE HOME...EVACUATE IT AND GET ON THE LOWEST FLOOR
OF A NEARBY STURDY BUILDING OR IN AN UNDERGROUND STORM SHELTER. IF NO
SUBSTANTIAL SHELTER IS AVAILABLE AND A TORNADO IS FAST APPROACHING...
SEEK SHELTER IN A CULVERT...DITCH OR LOW DEPRESSION AND COVER YOUR
HEAD WITH YOUR HANDS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT FRIDAY EVENING
FOR SOUTHEAST MISSISSIPPI.

LAT...LON 3119 8845 3119 8883 3141 8882 3144 8848
TIME...MOT...LOC 0036Z 261DEG 26KT 3131 8869

$$
4 follow-up statements
000 
WWUS54 KMOB 190041
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
741 PM CDT FRI APR 18 2008

MSC041-190115-
/O.CON.KMOB.TO.W.0052.000000T0000Z-080419T0115Z/
GREENE MS-
741 PM CDT FRI APR 18 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR NORTHERN
GREENE COUNTY...

AT 739 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR AVERA...OR ABOUT
14 MILES NORTHWEST OF LEAKESVILLE...MOVING EAST AT 30 MPH.

THE TORNADO WILL BE NEAR...
  6 MILES NORTH OF JONATHAN BY 745 PM CDT...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING QUARTER 
SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT FRIDAY EVENING
FOR SOUTHEAST MISSISSIPPI. A TORNADO WATCH ALSO REMAINS IN EFFECT
UNTIL MIDNIGHT CDT SATURDAY MORNING FOR SOUTHWESTERN ALABAMA AND
NORTHWEST FLORIDA.

LAT...LON 3119 8845 3119 8883 3141 8882 3144 8848
TIME...MOT...LOC 0041Z 261DEG 26KT 3131 8870

$$
000 
WWUS54 KMOB 190051
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
751 PM CDT FRI APR 18 2008

MSC041-190115-
/O.CON.KMOB.TO.W.0052.000000T0000Z-080419T0115Z/
GREENE MS-
751 PM CDT FRI APR 18 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR NORTHERN
GREENE COUNTY...

AT 748 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR AVERA...OR ABOUT
12 MILES NORTHWEST OF LEAKESVILLE...MOVING EAST AT 30 MPH.

THE TORNADO WILL BE NEAR...
  RURAL NORTHEASTERN GREENE COUNTY AT 810 PM CDT

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING GOLF 
BALL SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS IN EXCESS OF 70 MPH.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT FRIDAY EVENING
FOR SOUTHEAST MISSISSIPPI. A TORNADO WATCH ALSO REMAINS IN EFFECT
UNTIL MIDNIGHT CDT SATURDAY MORNING FOR SOUTHWESTERN ALABAMA AND
NORTHWEST FLORIDA.

LAT...LON 3131 8847 3129 8845 3127 8845 3125 8846
      3124 8877 3141 8879 3144 8847
TIME...MOT...LOC 0051Z 261DEG 26KT 3131 8862

$$
000 
WWUS54 KMOB 190107
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
806 PM CDT FRI APR 18 2008

MSC041-190115-
/O.CON.KMOB.TO.W.0052.000000T0000Z-080419T0115Z/
GREENE MS-
806 PM CDT FRI APR 18 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR
NORTHEASTERN GREENE COUNTY...

AT 805 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A ROTATING WALL 
CLOUD. THIS POSSIBLE TORNADO WAS LOCATED OVER NORTHEASTERN GREENE 
COUNTY...OR ABOUT 12 MILES NORTH OF LEAKESVILLE...MOVING EAST AT 30 
MPH.

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING GOLF 
BALL SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS IN EXCESS OF 70 MPH.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT FRIDAY EVENING
FOR SOUTHEAST MISSISSIPPI. A TORNADO WATCH ALSO REMAINS IN EFFECT
UNTIL MIDNIGHT CDT SATURDAY MORNING FOR SOUTHWESTERN ALABAMA AND
NORTHWEST FLORIDA.

LAT...LON 3131 8847 3129 8846 3125 8846 3125 8866
      3142 8867 3143 8847
TIME...MOT...LOC 0106Z 261DEG 26KT 3133 8849

$$
000 
WWUS54 KMOB 190114
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
814 PM CDT FRI APR 18 2008

MSC041-190124-
/O.EXP.KMOB.TO.W.0052.000000T0000Z-080419T0115Z/
GREENE MS-
814 PM CDT FRI APR 18 2008

...THE TORNADO WARNING FOR NORTHEASTERN GREENE COUNTY WILL BE 
ALLOWED TO EXPIRE AT 815 PM CDT...

THE POTENTIAL TORNADO HAS MOVED EAST INTO WASHINGTON COUNTY ALABAMA.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT FRIDAY EVENING
FOR SOUTHEAST MISSISSIPPI. A TORNADO WATCH ALSO REMAINS IN EFFECT
UNTIL MIDNIGHT CDT SATURDAY MORNING FOR SOUTHWESTERN ALABAMA AND
NORTHWEST FLORIDA.

LAT...LON 3131 8847 3129 8846 3125 8846 3125 8866
      3142 8867 3143 8847
TIME...MOT...LOC 0114Z 261DEG 26KT 3134 8842

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 18, 8:46 PM CDTFlash Flood WarningMOBGreene3 hr
Apr 18, 9:16 PM CDTSevere Thunderstorm WarningMOBGreene44 min

Nearby

Tornado Warnings in Mississippi, 2008Every tornado warning in 2008Tornadoes in 2008

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.