Alert archive / Missouri / Tornado Warnings in 2011

Tornado Warning 22, NWS Paducah, KY

April 4, 2011Mississippi County, New Madrid County, Scott County, Missouri

NWS Paducah, KY issued this tornado warning at Apr 4, 2011, 9:28 AM CDT for Mississippi County, New Madrid County, Scott County, Missouri. It was in force for 32 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 4, 2011, 9:28 AM CDT (14:28 UTC)
Expired
Apr 4, 2011, 10:00 AM CDT
In force
32 min
Issued by
NWS Paducah, KY
Area
Storm-based polygon

Counties Mississippi County, MO, New Madrid County, MO, Scott County, MO

The radar

The Paducah radar (KPAH), 66 km from the middle of the area, began a volume at 14:28 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 4, 7:22 AM CDTTornado WatchSPC7 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 12:00Z, 2.5 hours before the alert went out and 244 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 2011-04-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1771 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 2011-04-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 39 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
1771 J/kg
Mixed-layer CIN
-22 J/kg
Mixed-layer LCL
636 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
39 m²/s²
0-3 km storm-relative helicity
71 m²/s²
Significant tornado parameter
0.6
Supercell composite
2.5

Open this sounding in Storm Lab

The text

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

423 
WFUS53 KPAH 041428
TORPAH
MOC133-143-201-041500-
/O.NEW.KPAH.TO.W.0022.110404T1428Z-110404T1500Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE PADUCAH KY
928 AM CDT MON APR 4 2011

THE NATIONAL WEATHER SERVICE IN PADUCAH HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN MISSISSIPPI COUNTY IN SOUTHEAST MISSOURI...
  NORTH CENTRAL NEW MADRID COUNTY IN SOUTHEAST MISSOURI...
  SOUTHERN SCOTT COUNTY IN SOUTHEAST MISSOURI...

* UNTIL 1000 AM CDT.

* AT 924 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR SIKESTON...
  MOVING NORTHEAST AT 50 MPH.

* LOCATIONS IN THE WARNING INCLUDE...
  SIKESTON...
  MINER...
  HAY-WOOD CITY...
  BERTRAND...

THIS INCLUDES INTERSTATE 55 BETWEEN EXITS 66 AND 67.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3715 8946 3696 8931 3679 8961 3694 8970
TIME...MOT...LOC 1428Z 237DEG 45KT 3690 8958

$$
2 follow-up statements
434 
WWUS53 KPAH 041435
SVSPAH

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PADUCAH KY
935 AM CDT MON APR 4 2011

MOC143-041445-
/O.CAN.KPAH.TO.W.0022.000000T0000Z-110404T1500Z/
NEW MADRID MO-
935 AM CDT MON APR 4 2011

...THE TORNADO WARNING FOR NORTH CENTRAL NEW MADRID COUNTY IN
SOUTHEAST MISSOURI IS CANCELLED...

LAT...LON 3686 8951 3699 8965 3715 8946 3696 8931
TIME...MOT...LOC 1435Z 237DEG 45KT 3695 8949

$$

MOC133-201-041500-
/O.CON.KPAH.TO.W.0022.000000T0000Z-110404T1500Z/
SCOTT MO-MISSISSIPPI MO-
935 AM CDT MON APR 4 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1000 AM CDT FOR
NORTHWESTERN MISSISSIPPI AND SOUTHEASTERN SCOTT COUNTIES IN SOUTHEAST
MISSOURI...

AT 933 AM CDT...WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS STORM WAS
LOCATED NEAR MINER...MOVING NORTHEAST AT 50 MPH.

LOCATIONS IN THE WARNING INCLUDE DIEHLSTADT.

THIS INCLUDES INTERSTATE 55 BETWEEN EXITS 66 AND 67.

LAT...LON 3686 8951 3699 8965 3715 8946 3696 8931
TIME...MOT...LOC 1435Z 237DEG 45KT 3695 8949

$$
402 
WWUS53 KPAH 041446
SVSPAH

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PADUCAH KY
946 AM CDT MON APR 4 2011

MOC133-201-041500-
/O.CON.KPAH.TO.W.0022.000000T0000Z-110404T1500Z/
SCOTT MO-MISSISSIPPI MO-
946 AM CDT MON APR 4 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1000 AM CDT FOR NORTH
CENTRAL MISSISSIPPI AND EAST CENTRAL SCOTT COUNTIES IN SOUTHEAST
MISSOURI...

AT 942 AM CDT...WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS STORM WAS
LOCATED 3 MILES NORTHEAST OF DIEHLSTADT...MOVING NORTHEAST AT 50 MPH.

.

LAT...LON 3692 8943 3704 8956 3715 8946 3696 8931
TIME...MOT...LOC 1446Z 237DEG 45KT 3702 8934

$$

The office that day

Everything else NWS Paducah, KY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 4, 7:46 AM CDTSevere Thunderstorm WarningPAHRipley29 min
Apr 4, 8:40 AM CDTSevere Thunderstorm WarningPAHCape Girardeau, Scott35 min
Apr 4, 9:43 AM CDTSevere Thunderstorm WarningPAHMississippi, New Madrid, Stoddard47 min

Nearby

Tornado Warnings in Missouri, 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.