Alert archive / Missouri / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 224, NWS Kansas City, MO

July 25, 20095 counties in Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at Jul 25, 2009, 2:47 AM CDT for 5 counties in Missouri. It was in force for 43 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: Jul 25, 2009, 2:47 AM CDT (07:47 UTC)
Expired: Jul 25, 2009, 3:30 AM CDT
In force: 43 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon

Counties Chariton County, MO, Grundy County, MO, Linn County, MO, Livingston County, MO, Macon County, MO

The radar

The Pleasant Hill radar (KEAX), 148 km from the middle of the area, began a volume at 07:50 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

Davenport, (KDVN), launched 00:00Z, 7.8 hours before the alert went out and 300 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: 1164 J/kg
Mixed-layer CIN: -72 J/kg
Mixed-layer LCL: 1266 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 87 m²/s²
0-3 km storm-relative helicity: 321 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 12.3

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 Jul 25, 2:41 AM CDT, 6 minutes earlier.

Area forecast discussion, Jul 25, 2:41 AM CDT, 6 minutes before

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Hazardous weather outlook, Jul 24, 1:01 PM CDT, 13 hours 46 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
101 PM CDT FRI JUL 24 2009

KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040-
043>046-053-054-251815-
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-
101 PM CDT FRI JUL 24 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 MAY DEVELOP ACROSS PORTIONS OF EASTERN NEBRASKA AND
CENTRAL IOWA LATE THIS AFTERNOON AHEAD OF AN ADVANCING COLD FRONT.
THESE THUNDERSTORMS ARE EXPECTED TO MOVE SOUTHWARD TOWARDS THE
NORTHERN PORTIONS OF THE OUTLOOK AREA THIS EVENING...AND THROUGH THE
REMAINDER OF THE OUTLOOK AREA OVERNIGHT. A FEW STRONG TO POSSIBLY
SEVERE THUNDERSTORMS MAY BE POSSIBLE THIS EVENING WITH LARGE HAIL AND
DAMAGING WINDS THE PRIMARY THREATS. THE AREA WITH THE HIGHEST
PROBABILITY FOR ANY STRONG TO SEVERE THUNDERSTORMS IS EAST OF
INTERSTATE 35 AND NORTH OF THE HIGHWAY 36.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

THUNDERSTORMS MAY RETURN TO THE OUTLOOK AREA BY MONDAY NIGHT THROUGH
TUESDAY. AT THIS TIME...IT IS TOO EARLY TO DETERMINE WHETHER THE
STORMS WILL BE SEVERE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS POSSIBLE TONIGHT EAST OF INTERSTATE 35 AND
NORTH OF ROUTE 36.

In the hours before

Special weather statement, Jul 25, 1:15 AM CDT, 1 hour 32 minutes before

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Local storm report, Jul 25, 1:36 AM CDT, 1 hour 11 minutes before

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Special weather statement, Jul 25, 1:46 AM CDT, 1 hour 1 minute before

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Special weather statement, Jul 25, 1:50 AM CDT, 57 minutes before

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Special weather statement, Jul 25, 2:18 AM CDT, 29 minutes before

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Special weather statement, Jul 25, 2:36 AM CDT, 11 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
Jul 24, 11:18 PM CDT	Special Weather Statement	EAX	Schuyler	27 min
Jul 24, 11:45 PM CDT	Special Weather Statement	EAX	Adair	45 min
Jul 25, 12:34 AM CDT	Special Weather Statement	EAX	Adair	26 min
Jul 25, 1:01 AM CDT	Severe Thunderstorm Warning	EAX	Clay, Jackson	29 min
Jul 25, 1:15 AM CDT	Special Weather Statement	EAX	DeKalb	45 min
Jul 25, 1:20 AM CDT	Severe Thunderstorm Warning	EAX	Cass, Jackson, Johnson, Lafayette	40 min
Jul 25, 1:46 AM CDT	Special Weather Statement	EAX	Daviess	44 min
Jul 25, 1:50 AM CDT	Special Weather Statement	EAX	Johnson	40 min
Jul 25, 2:18 AM CDT	Special Weather Statement	EAX	Daviess, Livingston	42 min
Jul 25, 2:36 AM CDT	Special Weather Statement	EAX	Adair	39 min
Jul 25, 5:56 AM CDT	Special Weather Statement	EAX	Cass	34 min

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.