Alert archive / Missouri / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 28, NWS Kansas City, MO

May 4, 20126 counties in Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at May 4, 2012, 12:29 AM CDT for 6 counties in Missouri. It was in force for 46 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, 12:29 AM CDT (05:29 UTC)
Expired: May 4, 2012, 1:15 AM CDT
In force: 46 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

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

The radar

The Pleasant Hill radar (KEAX), 144 km from the middle of the area, began a volume at 05:32 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 3, 7:09 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 5.5 hours before the alert went out and 169 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.

196 
WUUS53 KEAX 040529
SVREAX
MOC003-061-063-075-081-147-040615-
/O.NEW.KEAX.SV.W.0028.120504T0529Z-120504T0615Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1229 AM CDT FRI MAY 4 2012

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN ANDREW COUNTY IN NORTHWEST MISSOURI...
  NORTHWESTERN DAVIESS COUNTY IN NORTH CENTRAL MISSOURI...
  NORTHERN DEKALB COUNTY IN NORTHWEST MISSOURI...
  SOUTHERN GENTRY COUNTY IN NORTHWEST MISSOURI...
  SOUTHWESTERN HARRISON COUNTY IN NORTH CENTRAL MISSOURI...
  SOUTHEASTERN NODAWAY COUNTY IN NORTHWEST MISSOURI...

* UNTIL 115 AM CDT

* AT 1224 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR KING
  CITY...AND MOVING EAST AT 25 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...
  PATTONSBURG...FAIRPORT...MCFALL...SANTA ROSA...COFFEY AND JAMESON.

THIS WILL IMPACT

 I-35 BETWEEN MILE MARKERS 69 AND 87.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS!

&&

LAT...LON 4020 9397 3993 9397 4000 9477 4019 9477
TIME...MOT...LOC 0528Z 273DEG 21KT 4009 9443

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

$$

MJM

2 follow-up statements

579 
WWUS53 KEAX 040557
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1257 AM CDT FRI MAY 4 2012

MOC003-061-063-075-081-147-040615-
/O.CON.KEAX.SV.W.0028.000000T0000Z-120504T0615Z/
DAVIESS MO-DEKALB MO-GENTRY MO-HARRISON MO-NODAWAY MO-ANDREW MO-
1257 AM CDT FRI MAY 4 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
ANDREW...SOUTHEASTERN NODAWAY...SOUTHWESTERN HARRISON...SOUTHERN
GENTRY...NORTHERN DEKALB AND NORTHWESTERN DAVIESS COUNTIES UNTIL 115
AM CDT...

AT 1254 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED 5 MILES NORTHWEST
OF PATTONSBURG...AND MOVING EAST AT 25 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...
PATTONSBURG...SANTA ROSA...COFFEY AND JAMESON.

THIS WILL IMPACT

 I-35 BETWEEN MILE MARKERS 69 AND 87.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS!

&&

LAT...LON 4020 9397 3993 9397 4000 9477 4019 9477
TIME...MOT...LOC 0557Z 273DEG 21KT 4008 9421

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

$$

MJM

670 
WWUS53 KEAX 040613
SVSEAX

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

MOC003-061-063-075-081-147-040623-
/O.EXP.KEAX.SV.W.0028.000000T0000Z-120504T0615Z/
DAVIESS MO-DEKALB MO-GENTRY MO-HARRISON MO-NODAWAY MO-ANDREW MO-
113 AM CDT FRI MAY 4 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN ANDREW...
SOUTHEASTERN NODAWAY...SOUTHWESTERN HARRISON...SOUTHERN GENTRY...
NORTHERN DEKALB AND NORTHWESTERN DAVIESS COUNTIES WILL EXPIRE AT 115
AM CDT...

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.

LAT...LON 4020 9397 3993 9397 4000 9477 4019 9477
TIME...MOT...LOC 0613Z 273DEG 21KT 4007 9409

$$

MJM

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, 12:42 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, 3:55 AM CDT	Severe Thunderstorm Warning	EAX	Harrison	14 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.