Alert archive / Missouri / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 310, NWS Kansas City, MO

September 18, 2010Jackson County, Lafayette County, Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at Sep 18, 2010, 6:01 PM CDT for Jackson County, Lafayette County, Missouri. It was in force for 44 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: Sep 18, 2010, 6:01 PM CDT (23:01 UTC)
Expired: Sep 18, 2010, 6:45 PM CDT
In force: 44 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Hail: 1.75 in
Wind: 60.0 mph

Counties Jackson County, MO, Lafayette County, MO

The radar

The Pleasant Hill radar (KEAX), 20 km from the middle of the area, began a volume at 23:05 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

Time	Report	Where	Remark
Sep 18, 6:30 PM CDT	HAIL 1	Grain Valley, MO

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

The watch it was issued in

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

Issued	Product	Office	Lasted
Sep 18, 2:21 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 11.0 hours before the alert went out and 122 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: 2038 J/kg
Mixed-layer CIN: -110 J/kg
Mixed-layer LCL: 979 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 110 m²/s²
0-3 km storm-relative helicity: 56 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.

190 
WUUS53 KEAX 182301
SVREAX
MOC095-107-182345-
/O.NEW.KEAX.SV.W.0310.100918T2301Z-100918T2345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
601 PM CDT SAT SEP 18 2010

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL JACKSON COUNTY IN WEST CENTRAL MISSOURI...
  SOUTHWESTERN LAFAYETTE COUNTY IN WEST CENTRAL MISSOURI...

* UNTIL 645 PM CDT

* AT 555 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED   
  TO INDICATED A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING   
  DAMAGING WINDS IN EXCESS OF 60 MPH...AND GOLF BALL SIZE HAIL.      
  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM LAKE         
  TAPAWINGO TO 6 MILES SOUTHEAST OF OAK GROVE...AND MOVING           
  SOUTHEAST AT 10 MPH.

* LOCATIONS IMPACTED INCLUDE...
  INDEPENDENCE...BLUE SPRINGS AND TARSNEY LAKES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE
TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM
WINDOWS.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY
LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 3902 9443 3911 9440 3910 9399 3891 9409
      3891 9412 3887 9413
TIME...MOT...LOC 2259Z 298DEG 8KT 3903 9430 3893 9405
WIND...HAIL 60MPH 1.75IN

$$

CUTTER

2 follow-up statements

659 
WWUS53 KEAX 182316
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
616 PM CDT SAT SEP 18 2010

MOC095-107-182345-
/O.CON.KEAX.SV.W.0310.000000T0000Z-100918T2345Z/
JACKSON MO-LAFAYETTE MO-
616 PM CDT SAT SEP 18 2010

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
LAFAYETTE AND EAST CENTRAL JACKSON COUNTIES UNTIL 645 PM CDT...

AT 614 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL.  THIS
STORM WAS LOCATED NEAR GRAIN VALLEY...MOVING EAST AT 15 MPH.

LOCATIONS IMPACTED INCLUDE...
  OAK GROVE AND BATES CITY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE
TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM
WINDOWS.

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

&&

LAT...LON 3887 9413 3899 9427 3910 9421 3910 9399
      3891 9409 3891 9412
TIME...MOT...LOC 2316Z 279DEG 15KT 3901 9416
WIND...HAIL <50MPH 1.75IN

$$

CUTTER

275 
WWUS53 KEAX 182341
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
641 PM CDT SAT SEP 18 2010

MOC095-107-182350-
/O.EXP.KEAX.SV.W.0310.000000T0000Z-100918T2345Z/
JACKSON MO-LAFAYETTE MO-
641 PM CDT SAT SEP 18 2010

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN LAFAYETTE AND
EAST CENTRAL JACKSON COUNTIES WILL EXPIRE AT 645 PM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.

ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A SEVERE 
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 10 PM THIS EVENING. 

REMEMBER...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR 
LAFAYETTE COUNTY UNTIL 7 PM.

LAT...LON 3887 9413 3899 9427 3910 9421 3910 9399
      3891 9409 3891 9412
TIME...MOT...LOC 2340Z 279DEG 15KT 3899 9403

$$

CUTTER

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 18, 3:45 PM CDT	Special Weather Statement	EAX	Clay	30 min
Sep 18, 3:51 PM CDT	Severe Thunderstorm Warning	EAX	Clay, Jackson	24 min
Sep 18, 3:58 PM CDT	Special Weather Statement	EAX	Adair, Schuyler	47 min
Sep 18, 4:00 PM CDT	Special Weather Statement	EAX	Pettis	30 min
Sep 18, 4:03 PM CDT	Severe Thunderstorm Warning	EAX	Adair, Schuyler	27 min
Sep 18, 4:19 PM CDT	Special Weather Statement	EAX	Jackson	26 min
Sep 18, 4:24 PM CDT	Severe Thunderstorm Warning	EAX	Adair, Macon	36 min
Sep 18, 4:27 PM CDT	Severe Thunderstorm Warning	EAX	Jackson	48 min
Sep 18, 4:38 PM CDT	Special Weather Statement	EAX	Pettis	52 min
Sep 18, 4:46 PM CDT	Areal Flood Advisory	EAX	Johnson, Pettis	5 hr
Sep 18, 4:55 PM CDT	Severe Thunderstorm Warning	EAX	Howard, Saline	35 min
Sep 18, 5:08 PM CDT	Areal Flood Advisory	EAX	Clay, Jackson, Lafayette	5 hr
Sep 18, 5:14 PM CDT	Severe Thunderstorm Warning	EAX	Jackson, Lafayette	46 min
Sep 18, 5:24 PM CDT	Areal Flood Advisory	EAX	Howard, Saline	5 hr
Sep 18, 5:28 PM CDT	Severe Thunderstorm Warning	EAX	Cooper, Howard	32 min
Sep 18, 6:06 PM CDT	Flash Flood Warning	EAX	Jackson, Lafayette	11 hr
Sep 18, 6:06 PM CDT	Severe Thunderstorm Warning	EAX	Cass, Jackson, Johnson	24 min
Sep 18, 6:24 PM CDT	Severe Thunderstorm Warning	EAX	Cass, Jackson, Johnson, Lafayette	36 min
Sep 18, 6:57 PM CDT	Severe Thunderstorm Warning	EAX	Johnson	33 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2010 Every severe thunderstorm warning in 2010

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.