Alert archive / Missouri / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 168, NWS Kansas City, MO

June 11, 20094 counties in Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at Jun 11, 2009, 4:06 AM CDT for 4 counties in Missouri. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 11, 2009, 4:06 AM CDT (09:06 UTC)
Expired: Jun 11, 2009, 4:45 AM CDT
In force: 39 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon

Counties Chariton County, MO, Cooper County, MO, Howard County, MO, Saline County, MO

The radar

The Pleasant Hill radar (KEAX), 123 km from the middle of the area, began a volume at 09:06 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 nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 9.1 hours before the alert went out and 236 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: 316 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 686 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: -58 m²/s²
0-3 km storm-relative helicity: 35 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Kansas City, MO wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 11, 3:43 AM CDT, 23 minutes earlier.

Area forecast discussion, Jun 11, 3:43 AM CDT, 23 minutes before

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Hazardous weather outlook, Jun 10, 1:04 PM CDT, 15 hours 2 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
104 PM CDT WED JUN 10 2009

KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040-
043>046-053-054-111815-
ATCHISON KS-MIAMI-LINN KS-DONIPHAN-LEAVENWORTH-WYANDOTTE-
JOHNSON KS-ATCHISON MO-NODAWAY-WORTH-GENTRY-HARRISON-MERCER-
PUTNAM-SCHUYLER-HOLT-ANDREW-DE KALB-DAVIESS-GRUNDY-SULLIVAN-ADAIR-
BUCHANAN-CLINTON-CALDWELL-LIVINGSTON-LINN MO-MACON-PLATTE-CLAY-
RAY-CARROLL-CHARITON-RANDOLPH-JACKSON-LAFAYETTE-SALINE-HOWARD-
CASS-JOHNSON MO-PETTIS-COOPER-BATES-HENRY-
104 PM CDT WED JUN 10 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST...NORTH CENTRAL
AND WEST CENTRAL MISSOURI...AS WELL AS EXTREME EASTERN KANSAS.

.DAY ONE...THIS AFTERNOON AND TONIGHT

THUNDERSTORMS ARE EXPECTED TO MOVE ACROSS SOUTHEAST KANSAS INTO
SOUTHERN AND POSSIBLY CENTRAL MISSOURI BY THE EVENING HOURS...AND
CONTINUE INTO THE OVERNIGHT HOURS...MAINLY ALONG AND SOUTH OF A PAOLA
KANSAS TO BOONVILLE MISSOURI LINE. THERE IS SUFFICIENT INSTABILITY
FOR STRONG TO SEVERE THUNDERSTORMS WITH LARGE HAIL AND DAMAGING WINDS
THE PRIMARY THREATS. HOWEVER THERE IS ALSO THE POTENTIAL FOR A FEW
TORNADOES THIS EVENING. HEAVY RAIN WILL ALSO BE A
THREAT...CONSIDERING THE RECENT HEAVY RAINFALL.

OTHERWISE SCATTERED NON-SEVERE THUNDERSTORMS WILL BE POSSIBLE THIS
EVENING AND OVERNIGHT ACROSS THE REMAINDER OF THE OUTLOOK
AREA...GENERALLY ALONG AND NORTH OF INTERSTATE 70.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THERE IS A CHANCE OF THUNDERSTORMS ON FRIDAY...WITH THE POTENTIAL FOR
ADDITIONAL STORMS TO LINGER THROUGH THE WEEKEND AND INTO NEXT
WEEK...ACROSS PORTIONS OF THE OUTLOOK AREA...AS A RATHER UNSETTLED
WEATHER PATTERN PERSISTS ACROSS THE CENTRAL PLAINS. AT THIS
POINT...THE BEST CHANCE FOR STORMS IS FRIDAY INTO FRIDAY NIGHT AND
AGAIN SUNDAY NIGHT THROUGH TUESDAY. IT IS TOO EARLY TO DETERMINE
WHETHER THE STORMS WILL BE SEVERE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED LATE THIS AFTERNOON AND TONIGHT...MAINLY
ALONG AND SOUTH OF A PAOLA KANSAS TO BOONVILLE LINE.

33

In the hours before

Local storm report, Jun 11, 1:37 AM CDT, 2 hours 29 minutes before

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Local storm report, Jun 11, 1:59 AM CDT, 2 hours 7 minutes before

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Local storm report, Jun 11, 2:09 AM CDT, 1 hour 57 minutes before

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Special weather statement, Jun 11, 2:36 AM CDT, 1 hour 30 minutes before

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Special weather statement, Jun 11, 2:47 AM CDT, 1 hour 19 minutes before

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Special weather statement, Jun 11, 3:24 AM CDT, 42 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 10, 7:18 PM CDT	Special Weather Statement	EAX	Cooper	27 min
Jun 10, 7:24 PM CDT	Severe Thunderstorm Warning	EAX	Henry	36 min
Jun 10, 7:39 PM CDT	Special Weather Statement	EAX	Cooper	36 min
Jun 10, 7:54 PM CDT	Areal Flood Advisory	EAX	Henry, Johnson, Pettis	5 hr
Jun 10, 7:56 PM CDT	Special Weather Statement	EAX	Johnson	34 min
Jun 10, 8:04 PM CDT	Severe Thunderstorm Warning	EAX	Cooper, Howard	26 min
Jun 10, 8:28 PM CDT	Areal Flood Advisory	EAX	Cooper, Howard	5 hr
Jun 10, 8:30 PM CDT	Special Weather Statement	EAX	Howard	30 min
Jun 10, 8:54 PM CDT	Severe Thunderstorm Warning	EAX	Howard	36 min
Jun 10, 9:34 PM CDT	Special Weather Statement	EAX	Randolph	26 min
Jun 10, 9:47 PM CDT	Areal Flood Advisory	EAX	Howard, Randolph	3 hr
Jun 10, 11:07 PM CDT	River Flood Warning	EAX	Cooper	34 hr
Jun 10, 11:26 PM CDT	River Flood Warning	EAX	Cooper	11 hr
Jun 11, 12:03 AM CDT	Special Weather Statement	EAX	Buchanan	42 min
Jun 11, 12:50 AM CDT	Special Weather Statement	EAX	Clay, Clinton	40 min
Jun 11, 1:10 AM CDT	Severe Thunderstorm Warning	EAX	Caldwell, Clay, Clinton, Ray	50 min
Jun 11, 1:21 AM CDT	Areal Flood Advisory	EAX	Grundy, Linn, Sullivan	6 hr
Jun 11, 1:51 AM CDT	Severe Thunderstorm Warning	EAX	Ray	39 min
Jun 11, 2:24 AM CDT	Areal Flood Advisory	EAX	Buchanan, Caldwell, Clay, Clinton, Jackson, Lafayette and 2 more	5 hr
Jun 11, 2:36 AM CDT	Special Weather Statement	EAX	Jackson	39 min
Jun 11, 2:47 AM CDT	Special Weather Statement	EAX	Macon	28 min
Jun 11, 3:24 AM CDT	Special Weather Statement	EAX	Carroll	51 min
Jun 11, 4:50 AM CDT	Areal Flood Advisory	EAX	Caldwell, Carroll, Chariton, Livingston, Ray, Saline	5 hr
Jun 11, 7:12 AM CDT	River Flood Warning	EAX	Ray	9 hr
Jun 11, 7:40 AM CDT	River Flood Warning	EAX	Carroll	31 hr
Jun 11, 7:59 AM CDT	River Flood Warning	EAX	Clay, Ray	7 hr
Jun 11, 9:16 AM CDT	Areal Flood Warning	EAX	Caldwell, Carroll, Chariton, Grundy, Linn, Livingston and 4 more	9 hr
Jun 11, 10:23 AM CDT	Areal Flood Warning	EAX	DeKalb	4 hr
Jun 11, 11:00 AM CDT	River Flood Warning	EAX	Linn, Livingston	18 hr
Jun 11, 11:00 AM CDT	River Flood Warning	EAX	Carroll, Chariton	34 hr
Jun 11, 11:00 AM CDT	River Flood Warning	EAX	Carroll, Chariton, Saline	32 hr
Jun 11, 11:00 AM CDT	River Flood Warning	EAX	Chariton, Howard, Saline	32 hr
Jun 11, 11:00 AM CDT	River Flood Warning	EAX	Cooper, Howard	43 hr
Jun 10, 11:32 PM CDT	Special Weather Statement	EAX	Atchison	28 min
Jun 10, 11:43 PM CDT	Areal Flood Advisory	EAX	Atchison	6 hr

Nearby

Severe Thunderstorm Warnings in Missouri, 2009 Every severe thunderstorm warning in 2009

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.