Alert archive / Missouri / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 80, NWS Kansas City, MO

July 7, 20124 counties in Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at Jul 7, 2012, 5:47 PM CDT for 4 counties in Missouri. It was in force for 19 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
Jul 7, 2012, 5:47 PM CDT (22:47 UTC)
Expired
Jul 7, 2012, 6:06 PM CDT
In force
19 min
Issued by
NWS Kansas City, MO
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Andrew County, MO, DeKalb County, MO, Gentry County, MO, Nodaway County, MO

The radar

The Pleasant Hill radar (KEAX), 142 km from the middle of the area, began a volume at 22:50 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
Jul 7, 5:54 PM CDTTSTM WND DMGKing City, MOSEVERAL POWER POLES BLOWN OVER IN KING CITY...TRUCK ALSO OVERTURNED.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 10.8 hours before the alert went out and 151 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, Topeka, KS at 12:00Z on 2012-07-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 349 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, Topeka, KS at 12:00Z on 2012-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -56 square meters per square second.1939Sfc1 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
349 J/kg
Mixed-layer CIN
-258 J/kg
Mixed-layer LCL
2203 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
-56 m²/s²
0-3 km storm-relative helicity
-9 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

570 
WUUS53 KEAX 072247
SVREAX
MOC003-063-075-147-072315-
/O.NEW.KEAX.SV.W.0080.120707T2247Z-120707T2315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
547 PM CDT SAT JUL 7 2012

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN ANDREW COUNTY IN NORTHWEST MISSOURI...
  NORTHWESTERN DEKALB COUNTY IN NORTHWEST MISSOURI...
  SOUTHWESTERN GENTRY COUNTY IN NORTHWEST MISSOURI...
  SOUTHEASTERN NODAWAY COUNTY IN NORTHWEST MISSOURI...

* UNTIL 615 PM CDT

* AT 546 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR KING CITY...
  AND MOVING SOUTH AT 5 MPH.


  HAZARD...60 MPH WIND GUSTS AND PENNY SIZE HAIL.

  SOURCE...RADAR INDICATED.

  IMPACT...MINOR DAMAGE TO VEHICLES...ROOFS AND WINDOWS. MINOR TREE
           DAMAGE...WITH LIMBS UP TO ONE INCH IN DIAMETER BROKEN.

* LOCATIONS IMPACTED INCLUDE...
  KING CITY AND UNION STAR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4005 9440 3997 9443 3994 9457 3999 9470
      4008 9471 4019 9467 4018 9455 4014 9443
TIME...MOT...LOC 2247Z 010DEG 2KT 4008 9457

HAIL...0.75IN
WIND...60 MPH

$$

DUX
2 follow-up statements
823 
WWUS53 KEAX 072302
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
602 PM CDT SAT JUL 7 2012

MOC147-072312-
/O.CAN.KEAX.SV.W.0080.000000T0000Z-120707T2315Z/
NODAWAY MO-
602 PM CDT SAT JUL 7 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN NODAWAY COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED.

LAT...LON 4013 9445 4005 9441 3998 9445 3995 9457
      4000 9468 4008 9470 4013 9466 4012 9461
      4017 9460 4018 9455
TIME...MOT...LOC 2302Z 010DEG 2KT 4007 9457

$$

MOC003-063-075-072315-
/O.CON.KEAX.SV.W.0080.000000T0000Z-120707T2315Z/
DEKALB MO-GENTRY MO-ANDREW MO-
602 PM CDT SAT JUL 7 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
ANDREW...SOUTHWESTERN GENTRY AND NORTHWESTERN DEKALB COUNTIES UNTIL
615 PM CDT...


AT 601 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR KING CITY...
AND WAS NEARLY STATIONARY.

HAZARD...60 MPH WIND GUSTS.

SOURCE...RADAR INDICATED.

IMPACT...MINOR TREE DAMAGE...WITH LIMBS UP TO ONE INCH IN DIAMETER
         BROKEN.

LOCATIONS IMPACTED INCLUDE...
KING CITY AND UNION STAR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4013 9445 4005 9441 3998 9445 3995 9457
      4000 9468 4008 9470 4013 9466 4012 9461
      4017 9460 4018 9455
TIME...MOT...LOC 2302Z 010DEG 2KT 4007 9457

HAIL...<.75IN
WIND...60 MPH

$$

DUX
501 
WWUS53 KEAX 072306
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
606 PM CDT SAT JUL 7 2012

MOC003-063-075-072316-
/O.CAN.KEAX.SV.W.0080.000000T0000Z-120707T2315Z/
DEKALB MO-GENTRY MO-ANDREW MO-
606 PM CDT SAT JUL 7 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN ANDREW...
SOUTHWESTERN GENTRY AND NORTHWESTERN DEKALB COUNTIES IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
 HOWEVER HEAVY RAIN IS STILL POSSIBLE WITH THIS THUNDERSTORM.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN PLEASANT HILL.

LAT...LON 4013 9445 4005 9441 3998 9445 3995 9457
      4000 9468 4008 9470 4013 9466 4012 9461
      4017 9460 4018 9455
TIME...MOT...LOC 2306Z 010DEG 2KT 4007 9457

$$

DUX

The office that day

Everything else NWS Kansas City, MO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 7, 4:42 PM CDTSpecial Weather StatementEAXHenry33 min
Jul 7, 5:12 PM CDTSpecial Weather StatementEAXHenry48 min
Jul 7, 5:38 PM CDTSpecial Weather StatementEAXGentry37 min
Jul 7, 5:57 PM CDTSpecial Weather StatementEAXHarrison33 min
Jul 7, 6:00 PM CDTSevere Thunderstorm WarningEAXDaviess, Gentry, Harrison20 min
Jul 7, 6:36 PM CDTSpecial Weather StatementEAXGrundy24 min
Jul 7, 6:41 PM CDTSevere Thunderstorm WarningEAXGrundy, Sullivan34 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2012Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.