Alert archive / Missouri / Tornado Warnings in 2012

Tornado Warning 34, NWS Memphis, TN

April 5, 2012Pemiscot County, Missouri; Lake County, Tennessee

NWS Memphis, TN issued this tornado warning at Apr 5, 2012, 12:08 PM CDT for Pemiscot County, Missouri; Lake County, Tennessee. It was in force for 20 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 5, 2012, 12:08 PM CDT (17:08 UTC)
Expired
Apr 5, 2012, 12:28 PM CDT
In force
20 min
Issued by
NWS Memphis, TN
Area
Storm-based polygon

Counties Pemiscot County, MO, Lake County, TN

The radar

The Paducah radar (KPAH), 109 km from the middle of the area, began a volume at 17:11 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

Little Rock, AR (KLZK), launched 12:00Z, 5.1 hours before the alert went out and 173 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, Little Rock, AR at 12:00Z on 2012-04-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 42 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, Little Rock, AR at 12:00Z on 2012-04-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -41 square meters per square second.193958Sfc1 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
42 J/kg
Mixed-layer CIN
-132 J/kg
Mixed-layer LCL
1448 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
-41 m²/s²
0-3 km storm-relative helicity
51 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-0.2

Open this sounding in Storm Lab

The text

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

302 
WFUS54 KMEG 051708
TORMEG
MOC155-TNC095-051745-
/O.NEW.KMEG.TO.W.0034.120405T1708Z-120405T1745Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MEMPHIS TN
1208 PM CDT THU APR 5 2012

THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A

* TORNADO WARNING FOR...
  WESTERN LAKE COUNTY IN NORTHWEST TENNESSEE...
  NORTHERN PEMISCOT COUNTY IN SOUTHEAST MISSOURI...

* UNTIL 1245 PM CDT

* AT 1208 PM CDT...THE PUBLIC REPORTED A TORNADO NEAR HAYTI
  HEIGHTS...OR NEAR HAYTI...MOVING NORTHEAST AT 5 MPH.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  CARUTHERSVILLE...HAYTI...HAYWARD...STEWART...STANLEY...SWIFT...
  BRAGGADOCIO...SHADE...STUBTOWN AND CANADY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

.THE SAFEST PLACE TO BE DURING A TORNADO IS IN A STORM SHELTER. IF NO
STORM SHELTER IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE
BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE
BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM
WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

&&

LAT...LON 3640 8945 3611 8970 3620 8989 3640 8978
      3639 8976 3643 8973 3640 8968 3641 8960
      3635 8954 3635 8953 3638 8952 3643 8955
      3644 8955
TIME...MOT...LOC 1708Z 209DEG 6KT 3622 8976

$$
1 follow-up statement
907 
WWUS54 KMEG 051728
SVSMEG

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
1228 PM CDT THU APR 5 2012

MOC155-TNC095-051738-
/O.CAN.KMEG.TO.W.0034.000000T0000Z-120405T1745Z/
PEMISCOT MO-LAKE TN-
1228 PM CDT THU APR 5 2012

...THE TORNADO WARNING FOR WESTERN LAKE AND NORTHERN PEMISCOT
COUNTIES IS CANCELLED...

AT 1228 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE 
THUNDERSTORM WHICH PROMPTED THE TORNADO WARNING HAS WEAKENED...AND 
NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY. 
THEREFORE...THE TORNADO WARNING IS CANCELLED.

.A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT FOR THE ALERT
AREA.

LAT...LON 3640 8945 3611 8970 3620 8989 3640 8978
      3639 8976 3643 8973 3640 8968 3641 8960
      3635 8954 3635 8953 3638 8952 3643 8955
      3644 8955
TIME...MOT...LOC 1728Z 209DEG 6KT 3625 8974

$$

The office that day

Everything else NWS Memphis, TN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 5, 11:45 AM CDTSpecial Weather StatementMEGPemiscot30 min
Apr 5, 11:49 AM CDTSevere Thunderstorm WarningMEGPemiscot41 min
Apr 5, 12:25 PM CDTSevere Thunderstorm WarningMEGDunklin, Pemiscot20 min
Apr 5, 10:01 AM CDTSpecial Weather StatementMEGShelby29 min
Apr 5, 10:03 AM CDTSevere Thunderstorm WarningMEGShelby32 min
Apr 5, 10:27 AM CDTSpecial Weather StatementMEGTipton48 min
Apr 5, 12:33 PM CDTSevere Thunderstorm WarningMEGCarroll27 min
Apr 5, 12:42 PM CDTSevere Thunderstorm WarningMEGCarroll, Chester, Gibson, Henderson, Madison33 min
Apr 5, 1:08 PM CDTSpecial Weather StatementMEGCarroll37 min
Apr 5, 1:11 PM CDTSpecial Weather StatementMEGCarroll34 min
Apr 5, 1:23 PM CDTSevere Thunderstorm WarningMEGCarroll, Henry, Weakley36 min
Apr 5, 1:46 PM CDTSpecial Weather StatementMEGObion29 min
Apr 5, 2:01 PM CDTSpecial Weather StatementMEGObion, Weakley29 min

Nearby

Tornado Warnings in Missouri, 2012Tornado Warnings in Tennessee, 2012Every tornado warning in 2012Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.