Alert archive / Missouri / Tornado Warnings in 2012

Tornado Warning 69, NWS Paducah, KY

August 31, 2012Bollinger County, Missouri

NWS Paducah, KY issued this tornado warning at Aug 31, 2012, 4:40 PM CDT for Bollinger County, Missouri. It was in force for 23 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
Aug 31, 2012, 4:40 PM CDT (21:40 UTC)
Expired
Aug 31, 2012, 5:03 PM CDT
In force
23 min
Issued by
NWS Paducah, KY
Area
Storm-based polygon

County Bollinger County, MO

The radar

The Paducah radar (KPAH), 126 km from the middle of the area, began a volume at 21:41 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Aug 31, 1:56 PM CDTTornado WatchSPC8 hr

The nearest sounding before it

Little Rock, AR (KBYH), launched 12:00Z, 9.7 hours before the alert went out and 287 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 2012-08-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 120 joules per kilogram.LCLEL10008507005003002001001 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 2012-08-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 154 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
120 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
446 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
154 m²/s²
0-3 km storm-relative helicity
135 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

827 
WFUS53 KPAH 312140
TORPAH
MOC017-312215-
/O.NEW.KPAH.TO.W.0069.120831T2140Z-120831T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE PADUCAH KY
440 PM CDT FRI AUG 31 2012

THE NATIONAL WEATHER SERVICE IN PADUCAH HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL BOLLINGER COUNTY IN SOUTHEAST MISSOURI...

* UNTIL 515 PM CDT.

* AT 439 PM CDT...RADAR INDICATED A THUNDERSTORM CAPABLE OF
  PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR  
  GRASSY...OR 12 MILES WEST OF MARBLE HILL...MOVING NORTH NORTHEAST
  AT 35 MPH.

* LOCATIONS IN THE WARNED AREA INCLUDE...
  PATTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3732 9015 3741 9016 3743 9015 3756 9015
      3757 9013 3755 8999 3730 9008 3730 9015
      3732 9020
TIME...MOT...LOC 2140Z 193DEG 36KT 3728 9018

$$
1 follow-up statement
137 
WWUS53 KPAH 312203
SVSPAH

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PADUCAH KY
503 PM CDT FRI AUG 31 2012

MOC017-312212-
/O.CAN.KPAH.TO.W.0069.000000T0000Z-120831T2215Z/
BOLLINGER MO-
503 PM CDT FRI AUG 31 2012

...THE TORNADO WARNING FOR CENTRAL BOLLINGER COUNTY IN SOUTHEAST
MISSOURI IS CANCELLED...

THE CIRCULATION WITHIN THE STORM THAT PROMPTED THE WARNING HAS 
WEAKENED CONSIDERABLY. THE STORM MAY STILL PRODUCE GUSTY WINDS 35 TO 
45 MPH AS IT TRACKS ACROSS NORTHWEST BOLLINGER COUNTY THROUGH 520 PM.

LAT...LON 3732 9015 3741 9016 3743 9015 3756 9015
      3757 9013 3755 8999 3730 9008 3730 9015
      3732 9020
TIME...MOT...LOC 2202Z 193DEG 36KT 3749 9012

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 31, 4:20 PM CDTTornado WarningPAHBollinger, Wayne25 min
Aug 31, 4:29 PM CDTTornado WarningPAHBollinger, Cape Girardeau31 min

Nearby

Tornado Warnings in Missouri, 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.