Alert archive / Missouri / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 159, NWS Kansas City, MO

June 9, 2009Bates County, Missouri; Linn County, Kansas

NWS Kansas City, MO issued this severe thunderstorm warning at Jun 9, 2009, 8:10 PM CDT for Bates County, Missouri; Linn County, Kansas. It was in force for 35 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 9, 2009, 8:10 PM CDT (01:10 UTC)
Expired: Jun 9, 2009, 8:45 PM CDT
In force: 35 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon

Counties Linn County, KS, Bates County, MO

The radar

The Pleasant Hill radar (KEAX), 70 km from the middle of the area, began a volume at 01:10 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, 1.2 hours before the alert went out and 125 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: 165 J/kg
Mixed-layer CIN: -291 J/kg
Mixed-layer LCL: 567 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 163 m²/s²
0-3 km storm-relative helicity: 315 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 9.4

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 9, 6:54 PM CDT, 1 hour 16 minutes earlier.

Area forecast discussion, Jun 9, 6:54 PM CDT, 1 hour 16 minutes before

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Hazardous weather outlook, Jun 9, 12:58 PM CDT, 7 hours 12 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1258 PM CDT TUE JUN 9 2009

KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040-
043>046-053-054-101800-
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-
1258 PM CDT TUE JUN 9 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

A BAND OF THUNDERSTORMS WILL CONTINUE TO MOVE EAST ACROSS WESTERN AND
CENTRAL MISSOURI THIS AFTERNOON. SOME STORMS MAY BE SEVERE ALONG AND
SOUTH OF INTERSTATE 70 EARLY THIS AFTERNOON. THE PRIMARY THREATS ARE
LARGE HAIL...DAMAGING WINDS...ISOLATED TORNADOES AND LOCALLY HEAVY RAINFALL.

THIS THUNDERSTORM COMPLEX WILL PUSH AN OUTFLOW BOUNDARY SOUTH TO JUST
SOUTH OF THE OUTLOOK AREA THIS AFTERNOON WITH THE ATMOSPHERE
CONTINUING TO STABILIZE THIS AFTERNOON. HOWEVER...AS A STORM SYSTEM
MOVES NORTHEAST OUT OF SOUTHERN KANSAS...THE OUTFLOW BOUNDARY WILL
RETREAT NORTH THIS EVENING WITH A MOIST AND UNSTABLE AIR MASS SURGING
BACK NORTH TO AREAS ALONG AND SOUTH OF INTERSTATE 70. THE FUTURE
LOCATION OF THIS BOUNDARY THIS EVENING IS SOMEWHAT IN QUESTION.

SEVERE THUNDERSTORMS ARE ONCE AGAIN EXPECTED TO DEVELOP IN CENTRAL
KANSAS THIS AFTERNOON WITH THE ACTIVITY TO MOVE NORTHEAST INTO
WESTERN MISSOURI LATE THIS EVENING. SEVERE THUNDERSTORMS ARE LIKELY
ACROSS MUCH OF THE OUTLOOK AREA TONIGHT. LARGE HAIL AND DAMAGING
WINDS ARE THE PRIMARY THREAT. HOWEVER...ISOLATED TORNADOES ARE ALSO
POSSIBLE TONIGHT...ALONG AND SOUTH OF INTERSTATE 70.

THE THUNDERSTORMS WILL ALSO PRODUCE HEAVY RAINFALL TONIGHT. A FLASH
FLOOD WATCH IS CURRENTLY IN EFFECT TONIGHT FOR NORTHERN MISSOURI. THE
FLASH FLOOD WATCH MAY BE EXTENDED SOUTH TO COVER MUCH OF THE
REMAINDER OF THE OUTLOOK AREA.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

DUE TO THE NIGHTTIME THUNDERSTORM ACTIVITY...ANOTHER OUTFLOW BOUNDARY WILL SAG
SOUTH INTO SOUTHERN MISSOURI ON WEDNESDAY MORNING WITH THE BOUNDARY
POSSIBLY RETREATING A LITTLE NORTH DURING THE DAY ON WEDNESDAY. A FEW
SEVERE THUNDERSTORMS WILL AGAIN BE POSSIBLE ON WEDNESDAY...MAINLY
ALONG AND SOUTH OF INTERSTATE 70. THE PRIMARY THREAT IS LARGE HAIL.

THERE IS A THREAT OF THUNDERSTORMS FRIDAY NIGHT AND SATURDAY FOR
PORTIONS OF THE OUTLOOK AREA. AT THIS TIME...IT IS TOO EARLY TO
DETERMINE WHETHER THE STORMS WILL BE SEVERE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS LIKELY THIS AFTERNOON AND TONIGHT...MAINLY
ALONG AND SOUTH OF INTERSTATE 70.

DB

In the hours before

Local storm report, Jun 9, 4:32 PM CDT, 3 hours 38 minutes before

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Special weather statement, Jun 9, 6:19 PM CDT, 1 hour 51 minutes before

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Special weather statement, Jun 9, 7:05 PM CDT, 1 hour 5 minutes before

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Local storm report, Jun 9, 7:32 PM CDT, 38 minutes before

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Special weather statement, Jun 9, 8:04 PM CDT, 6 minutes before

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Special weather statement, Jun 9, 8:08 PM CDT, 2 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
808 PM CDT TUE JUN 9 2009

MOZ037-043-100145-
CASS-JACKSON-
808 PM CDT TUE JUN 9 2009

...SIGNIFICANT WEATHER ALERT FOR NORTHWESTERN CASS AND SOUTHWESTERN
JACKSON COUNTIES UNTIL 845 PM CDT...

AT 807 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR BELTON...MOVING EAST AT 35 MPH.

NICKEL SIZE HAIL IS EXPECTED WITH THIS STORM.

THIS STORM WILL BE NEAR...
  GRANDVIEW AROUND 815 PM CDT.
  RAYMORE AROUND 820 PM CDT.
  GREENWOOD...LAKE WINNEBAGO AND LEES SUMMIT AROUND 830 PM CDT.
  PLEASANT HILL AROUND 835 PM CDT.

LAT...LON 3888 9461 3899 9432 3879 9419 3868 9461

CDB

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 9, 7:14 PM CDT	Severe Thunderstorm Warning	EAX	Bates, Cass	31 min
Jun 9, 7:44 PM CDT	Severe Thunderstorm Warning	EAX	Bates, Cass	31 min
Jun 9, 7:46 PM CDT	River Flood Warning	EAX	Cass, Henry, Johnson	26 hr
Jun 9, 8:04 PM CDT	Special Weather Statement	EAX	Johnson	26 min
Jun 9, 8:08 PM CDT	Special Weather Statement	EAX	Jackson	37 min
Jun 9, 8:45 PM CDT	Severe Thunderstorm Warning	EAX	Bates	28 min
Jun 9, 9:42 PM CDT	River Flood Warning	EAX	Johnson, Pettis	24 hr
Jun 9, 10:31 PM CDT	Areal Flood Advisory	EAX	Macon	6 hr
Jun 9, 10:58 PM CDT	Special Weather Statement	EAX	Johnson	32 min
Jun 9, 11:34 PM CDT	Special Weather Statement	EAX	Pettis	26 min
Jun 10, 12:00 AM CDT	Severe Thunderstorm Warning	EAX	Cooper, Pettis	30 min
Jun 10, 12:11 AM CDT	River Flood Warning	EAX	Bates, Cass, Henry	34 hr
Jun 10, 12:32 AM CDT	Special Weather Statement	EAX	Cooper	28 min
Jun 10, 4:56 PM CDT	Severe Thunderstorm Warning	EAX	Bates	34 min
Jun 10, 5:48 PM CDT	Special Weather Statement	EAX	Bates	27 min
Jun 10, 6:27 PM CDT	Special Weather Statement	EAX	Bates	33 min
Jun 10, 6:56 PM CDT	Special Weather Statement	EAX	Henry	34 min
Jun 9, 7:05 PM CDT	Special Weather Statement	EAX	Miami	25 min
Jun 9, 7:33 PM CDT	Severe Thunderstorm Warning	EAX	Linn, Miami	27 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2009 Severe Thunderstorm Warnings in Kansas, 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.