Alert archive / Missouri / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 29, NWS Kansas City, MO

May 4, 2012Harrison County, Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at May 4, 2012, 3:55 AM CDT for Harrison County, Missouri. It was in force for 14 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: May 4, 2012, 3:55 AM CDT (08:55 UTC)
Expired: May 4, 2012, 4:09 AM CDT
In force: 14 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Harrison County, MO

The radar

The Des Moines radar (KDMX), 153 km from the middle of the area, began a volume at 08:58 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.

Issued	Product	Office	Lasted
May 4, 12:53 AM CDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 8.9 hours before the alert went out and 205 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 3511 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 1105 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 102 m²/s²
0-3 km storm-relative helicity: 196 m²/s²
Significant tornado parameter: 2.0
Supercell composite: 14.3

Open this sounding in Storm Lab

The text

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

905 
WUUS53 KEAX 040855
SVREAX
MOC081-040930-
/O.NEW.KEAX.SV.W.0029.120504T0855Z-120504T0930Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
355 AM CDT FRI MAY 4 2012

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL HARRISON COUNTY IN NORTH CENTRAL MISSOURI...

* UNTIL 430 AM CDT


* AT 353 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED 6 MILES NORTHEAST
  OF NEW HAMPTON...AND MOVING EAST AT 10 MPH.

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

  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...
  BETHANY...RIDGEWAY...EAGLEVILLE AND BLYTHEDALE.

THIS WILL IMPACT

 I-35 BETWEEN MILE MARKERS 92 AND 107.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4050 9389 4026 9381 4026 9421 4033 9422
      4041 9421
TIME...MOT...LOC 0855Z 257DEG 7KT 4034 9412

HAIL...1.00IN
WIND...60 MPH

$$

HAWBLITZEL

1 follow-up statement

493 
WWUS53 KEAX 040909
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
409 AM CDT FRI MAY 4 2012

MOC081-040919-
/O.CAN.KEAX.SV.W.0029.000000T0000Z-120504T0930Z/
HARRISON MO-
409 AM CDT FRI MAY 4 2012

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL HARRISON COUNTY 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 SMALL HAIL AND HEAVY RAIN ARE STILL LIKELY WITH THIS 
THUNDERSTORM.

LAT...LON 4050 9389 4026 9381 4026 9421 4033 9422
      4041 9421
TIME...MOT...LOC 0909Z 257DEG 7KT 4035 9408

$$

HAWBLITZEL

The office that day

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

Issued	Product	Office	Counties	Lasted
May 4, 12:08 AM CDT	Special Weather Statement	EAX	Andrew	37 min
May 4, 12:12 AM CDT	Special Weather Statement	EAX	Daviess	48 min
May 4, 12:18 AM CDT	Severe Thunderstorm Warning	EAX	Daviess, Grundy, Livingston	42 min
May 4, 12:29 AM CDT	Severe Thunderstorm Warning	EAX	Andrew, Daviess, DeKalb, Gentry, Harrison, Nodaway	46 min
May 4, 12:42 AM CDT	Areal Flood Advisory	EAX	Andrew, Daviess, DeKalb, Gentry, Grundy, Harrison and 1 more	6 hr
May 4, 1:28 AM CDT	Flash Flood Warning	EAX	Daviess, DeKalb, Gentry	6 hr
May 4, 1:31 AM CDT	Special Weather Statement	EAX	Grundy, Sullivan	44 min
May 4, 2:31 AM CDT	Special Weather Statement	EAX	Nodaway	44 min
May 4, 3:12 AM CDT	Flash Flood Warning	EAX	Gentry, Nodaway, Worth	6 hr
May 4, 3:20 AM CDT	Special Weather Statement	EAX	Nodaway	40 min
May 4, 3:50 AM CDT	Special Weather Statement	EAX	Harrison	40 min
May 4, 4:08 AM CDT	Areal Flood Advisory	EAX	Harrison	6 hr
May 4, 5:07 AM CDT	River Flood Warning	EAX	Daviess, Gentry	26 hr
May 4, 6:25 AM CDT	Special Weather Statement	EAX	Lafayette	35 min
May 4, 7:05 AM CDT	River Flood Warning	EAX	Andrew, Nodaway	5 hr
May 4, 7:28 AM CDT	River Flood Warning	EAX	Daviess, Livingston	22 hr
May 4, 10:06 AM CDT	River Flood Warning	EAX	Linn, Livingston	31 hr
May 4, 10:06 AM CDT	River Flood Warning	EAX	Carroll, Chariton, Linn, Livingston	52 hr
May 4, 3:01 PM CDT	River Flood Warning	EAX	Buchanan	26 hr
May 4, 3:01 PM CDT	River Flood Warning	EAX	Platte	37 hr

Nearby

Severe Thunderstorm Warnings in Missouri, 2012 Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.