Alert archive / Missouri / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 101, NWS Kansas City, MO

May 21, 2011Grundy County, Mercer County, Sullivan County, Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at May 21, 2011, 10:09 PM CDT for Grundy County, Mercer County, Sullivan County, Missouri. It was in force for 17 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 21, 2011, 10:09 PM CDT (03:09 UTC)
Expired: May 21, 2011, 10:26 PM CDT
In force: 17 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Grundy County, MO, Mercer County, MO, Sullivan County, MO

The radar

The Des Moines radar (KDMX), 167 km from the middle of the area, began a volume at 03:09 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 21, 5:34 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 3.2 hours before the alert went out and 277 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: 553 J/kg
Mixed-layer CIN: -60 J/kg
Mixed-layer LCL: 1729 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 70 m²/s²
0-3 km storm-relative helicity: 59 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.

564 
WUUS53 KEAX 220309
SVREAX
MOC079-129-211-220345-
/O.NEW.KEAX.SV.W.0101.110522T0309Z-110522T0345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1009 PM CDT SAT MAY 21 2011

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN GRUNDY COUNTY IN NORTH CENTRAL MISSOURI...
  SOUTHEASTERN MERCER COUNTY IN NORTH CENTRAL MISSOURI...
  WESTERN SULLIVAN COUNTY IN NORTH CENTRAL MISSOURI...

* UNTIL 1045 PM CDT

* AT 1006 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH...AND QUARTER SIZE HAIL.  THIS STORM WAS LOCATED NEAR
  GALT...OR 10 MILES NORTHEAST OF TRENTON...AND MOVING NORTHEAST AT
  40 MPH.

AT 1001 PM CDT NICKLE SIZE HAIL WAS REPORTED IN GALT WITH THIS STORM.

* LOCATIONS IMPACTED INCLUDE...
  OSGOOD...REGER...HARRIS AND NEWTOWN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4035 9308 4009 9318 4004 9347 4026 9357
      4039 9335 4039 9317
TIME...MOT...LOC 0308Z 209DEG 34KT 4019 9345
WIND...HAIL 60MPH 1.00IN

$$

MJ

1 follow-up statement

960 
WWUS53 KEAX 220326
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1026 PM CDT SAT MAY 21 2011

MOC079-129-211-220336-
/O.CAN.KEAX.SV.W.0101.000000T0000Z-110522T0345Z/
GRUNDY MO-MERCER MO-SULLIVAN MO-
1026 PM CDT SAT MAY 21 2011

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN SULLIVAN...
SOUTHEASTERN MERCER AND NORTHEASTERN GRUNDY 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.

LAT...LON 4035 9308 4009 9318 4004 9347 4026 9357
      4039 9335 4039 9317
TIME...MOT...LOC 0326Z 209DEG 34KT 4034 9334

$$

MJ

The office that day

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

Issued	Product	Office	Counties	Lasted
May 21, 7:03 PM CDT	Severe Thunderstorm Warning	EAX	Andrew, Buchanan, Clinton, DeKalb, Platte	27 min
May 21, 7:15 PM CDT	Tornado Warning	EAX	Andrew, Holt	30 min
May 21, 7:21 PM CDT	Special Weather Statement	EAX	Buchanan, Platte	24 min
May 21, 7:27 PM CDT	Severe Thunderstorm Warning	EAX	Andrew, Buchanan, Clinton, DeKalb, Gentry, Platte	33 min
May 21, 7:29 PM CDT	Severe Thunderstorm Warning	EAX	Nodaway	31 min
May 21, 7:41 PM CDT	Tornado Warning	EAX	Andrew, DeKalb, Gentry, Nodaway	34 min
May 21, 7:46 PM CDT	Special Weather Statement	EAX	Holt	29 min
May 21, 7:50 PM CDT	Special Weather Statement	EAX	Worth	40 min
May 21, 7:55 PM CDT	Severe Thunderstorm Warning	EAX	Caldwell, Clinton, Daviess, DeKalb	35 min
May 21, 8:02 PM CDT	Special Weather Statement	EAX	Nodaway	28 min
May 21, 8:07 PM CDT	Tornado Warning	EAX	Andrew, Daviess, Gentry, Harrison, Nodaway	23 min
May 21, 8:08 PM CDT	Severe Thunderstorm Warning	EAX	Buchanan, Platte	22 min
May 21, 8:19 PM CDT	Severe Thunderstorm Warning	EAX	Gentry, Harrison, Worth	26 min
May 21, 8:26 PM CDT	Severe Thunderstorm Warning	EAX	Caldwell, Clinton, Daviess, DeKalb, Livingston	34 min
May 21, 8:29 PM CDT	Severe Thunderstorm Warning	EAX	Buchanan, Clinton, DeKalb, Platte	36 min
May 21, 8:34 PM CDT	Special Weather Statement	EAX	Holt	26 min
May 21, 8:38 PM CDT	Severe Thunderstorm Warning	EAX	Buchanan, Platte	37 min
May 21, 8:46 PM CDT	Severe Thunderstorm Warning	EAX	Buchanan, Platte	29 min
May 21, 8:54 PM CDT	Severe Thunderstorm Warning	EAX	Daviess, Grundy, Livingston	36 min
May 21, 9:07 PM CDT	Special Weather Statement	EAX	Mercer, Putnam	38 min
May 21, 9:13 PM CDT	Severe Thunderstorm Warning	EAX	Buchanan, Platte	32 min
May 21, 9:15 PM CDT	Severe Thunderstorm Warning	EAX	Buchanan, Clinton, DeKalb	45 min
May 21, 9:23 PM CDT	Severe Thunderstorm Warning	EAX	Buchanan, Platte	37 min
May 21, 9:23 PM CDT	Severe Thunderstorm Warning	EAX	Grundy, Livingston, Mercer, Putnam, Sullivan	37 min
May 21, 9:38 PM CDT	Areal Flood Advisory	EAX	Buchanan, Platte	4 hr
May 21, 9:44 PM CDT	Severe Thunderstorm Warning	EAX	Caldwell, Daviess, DeKalb	31 min
May 21, 9:44 PM CDT	Severe Thunderstorm Warning	EAX	Buchanan, Platte	35 min
May 21, 10:01 PM CDT	Special Weather Statement	EAX	Putnam, Schuyler, Sullivan	44 min
May 21, 10:11 PM CDT	Severe Thunderstorm Warning	EAX	Buchanan, Platte	21 min
May 21, 10:15 PM CDT	Special Weather Statement	EAX	Clinton	30 min
May 21, 10:35 PM CDT	Special Weather Statement	EAX	Clay	25 min
May 21, 10:51 PM CDT	Severe Thunderstorm Warning	EAX	Caldwell, Clinton	24 min
May 21, 11:17 PM CDT	Severe Thunderstorm Warning	EAX	Cass, Jackson	28 min
May 21, 11:26 PM CDT	Special Weather Statement	EAX	Livingston	49 min
May 21, 11:41 PM CDT	Severe Thunderstorm Warning	EAX	Cass, Jackson	34 min
May 22, 1:25 AM CDT	Severe Thunderstorm Warning	EAX	Chariton, Howard, Macon, Randolph, Saline	33 min
May 22, 2:08 AM CDT	Special Weather Statement	EAX	Macon	52 min
May 22, 2:17 AM CDT	Special Weather Statement	EAX	Macon	43 min
May 22, 4:04 AM CDT	River Flood Warning	EAX	Buchanan, Platte	126 days
May 22, 1:30 PM CDT	Special Weather Statement	EAX	Caldwell	45 min
May 22, 1:42 PM CDT	Special Weather Statement	EAX	Ray	48 min
May 22, 2:16 PM CDT	Severe Thunderstorm Warning	EAX	Carroll, Lafayette, Ray	29 min
May 22, 2:40 PM CDT	Special Weather Statement	EAX	Lafayette	35 min
May 22, 2:43 PM CDT	Special Weather Statement	EAX	Sullivan	32 min
May 22, 2:44 PM CDT	Severe Thunderstorm Warning	EAX	Carroll, Lafayette, Ray	46 min
May 22, 3:02 PM CDT	Severe Thunderstorm Warning	EAX	Carroll, Lafayette	28 min
May 22, 3:09 PM CDT	Tornado Warning	EAX	Carroll, Lafayette	36 min
May 22, 3:14 PM CDT	Special Weather Statement	EAX	Carroll	46 min
May 22, 3:41 PM CDT	Special Weather Statement	EAX	Schuyler	49 min
May 22, 3:44 PM CDT	Severe Thunderstorm Warning	EAX	Lafayette	31 min
May 22, 3:45 PM CDT	Tornado Warning	EAX	Carroll, Lafayette, Saline	30 min
May 22, 4:03 PM CDT	Tornado Warning	EAX	Lafayette, Saline	27 min
May 22, 4:05 PM CDT	Severe Thunderstorm Warning	EAX	Putnam, Schuyler	25 min
May 22, 4:12 PM CDT	Tornado Warning	EAX	Carroll, Saline	18 min
May 22, 4:24 PM CDT	Severe Thunderstorm Warning	EAX	Bates, Cass, Henry, Johnson	36 min
May 22, 4:29 PM CDT	Special Weather Statement	EAX	Chariton	46 min
May 22, 4:30 PM CDT	Severe Thunderstorm Warning	EAX	Lafayette, Saline	30 min
May 22, 4:38 PM CDT	Special Weather Statement	EAX	Cooper	52 min
May 22, 4:44 PM CDT	Tornado Warning	EAX	Chariton, Howard, Saline	31 min
May 22, 4:59 PM CDT	Severe Thunderstorm Warning	EAX	Saline	31 min
May 22, 5:03 PM CDT	Tornado Warning	EAX	Henry	27 min
May 22, 5:07 PM CDT	Severe Thunderstorm Warning	EAX	Cooper, Howard	23 min
May 22, 5:15 PM CDT	Tornado Warning	EAX	Chariton, Howard, Randolph	45 min
May 22, 5:16 PM CDT	Severe Thunderstorm Warning	EAX	Henry	29 min
May 22, 5:20 PM CDT	Special Weather Statement	EAX	Pettis	40 min
May 22, 5:29 PM CDT	Severe Thunderstorm Warning	EAX	Cooper, Pettis	46 min
May 22, 5:34 PM CDT	Severe Thunderstorm Warning	EAX	Cooper, Howard	12 min
May 22, 5:45 PM CDT	Severe Thunderstorm Warning	EAX	Henry	30 min
May 22, 5:56 PM CDT	Severe Thunderstorm Warning	EAX	Cooper, Howard, Saline	34 min
May 22, 6:00 PM CDT	Severe Thunderstorm Warning	EAX	Howard, Randolph	30 min
May 22, 6:15 PM CDT	Severe Thunderstorm Warning	EAX	Henry	13 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2011 Every severe thunderstorm warning 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.