Alert archive / Missouri / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 330, NWS Kansas City, MO

September 19, 2010Platte County, Missouri; Leavenworth County, Kansas

NWS Kansas City, MO issued this severe thunderstorm warning at Sep 19, 2010, 12:19 AM CDT for Platte County, Missouri; Leavenworth County, Kansas. It was in force for 41 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: Sep 19, 2010, 12:19 AM CDT (05:19 UTC)
Expired: Sep 19, 2010, 1:00 AM CDT
In force: 41 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Hail: 1.75 in
Wind: 60.0 mph

Counties Leavenworth County, KS, Platte County, MO

The radar

The Pleasant Hill radar (KEAX), 77 km from the middle of the area, began a volume at 05:21 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
Sep 18, 9:25 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 5.3 hours before the alert went out and 71 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: 2603 J/kg
Mixed-layer CIN: -59 J/kg
Mixed-layer LCL: 1043 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 157 m²/s²
0-3 km storm-relative helicity: 248 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.8

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 Sep 19, 12:01 AM CDT, 18 minutes earlier.

Area forecast discussion, Sep 19, 12:01 AM CDT, 18 minutes before

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Hazardous weather outlook, Sep 18, 10:55 PM CDT, 1 hour 24 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1055 PM CDT SAT SEP 18 2010

KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040-
043>046-053-054-191100-
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-
1055 PM CDT SAT SEP 18 2010

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

.DAY ONE...OVERNIGHT

 AN UNSTABLE ENVIRONMENT COUPLED WITH STRONG VERTICAL WIND SHEAR
 REMAINS IN PLACE ACROSS THE REGION LATE THIS EVENING. SCATTERED
 THUNDERSTORMS CAPABLE OF PRODUCING VERY LARGE HAIL AND TORRENTIAL
 RAINFALL WILL REMAIN POSSIBLE THROUGH THE OVERNIGHT HOURS.
 THE MOST INTENSE STORMS WILL BE FOCUSED JUST NORTH OF INTERSTATE
 70...GRADUALLY SHIFTING NORTHWARD OVERNIGHT TO INCLUDE MOST OF
 NORTHERN MISSOURI.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

 A LINGERING FRONT WILL CONTINUE TO PROVIDE SCATTERED THUNDERSTORM
 CHANCES THROUGH SUNDAY...ALTHOUGH THE THREAT FOR RENEWED SEVERE
 WEATHER APPEARS LOW AT THIS TIME.

 THUNDERSTORM CHANCES WILL RETURN TO THE OUTLOOK AREA TUESDAY
 AFTERNOON AND TUESDAY NIGHT AS A COLD FRONT PUSH SOUTH. SOME OF
 THESE STORM COULD REACH STRONG TO SEVERE LIMITS...WITH HEAVY
 RAINFALL ALSO POSSIBLE.

 ANOTHER FRONT IS FORECAST TO REACH THE AREA THURSDAY NIGHT...THOUGH
 IT IS TOO EARLY TO DETERMINE WHETHER SEVERE WEATHER WOULD BE
 POSSIBLE.

.SPOTTER INFORMATION STATEMENT...

 SPOTTERS WILL BE REQUIRED OVERNIGHT...PRIMARILY NORTH OF INTERSTATE
 70 FOR THE THREAT OF LARGE HAIL AND FLASH FLOODING.

BOOKBINDER

In the hours before

Local storm report, Sep 18, 11:49 PM CDT, 30 minutes before

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Local storm report, Sep 18, 11:55 PM CDT, 24 minutes before

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Local storm report, Sep 18, 11:59 PM CDT, 20 minutes before

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Local storm report, Sep 19, 12:05 AM CDT, 14 minutes before

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Special weather statement, Sep 19, 12:05 AM CDT, 14 minutes before

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Local storm report, Sep 19, 12:16 AM CDT, 3 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
Sep 18, 7:15 PM CDT	Areal Flood Advisory	EAX	Johnson	6 hr
Sep 18, 7:18 PM CDT	Special Weather Statement	EAX	Howard	42 min
Sep 18, 7:31 PM CDT	Severe Thunderstorm Warning	EAX	Henry, Johnson, Pettis	29 min
Sep 18, 7:48 PM CDT	Special Weather Statement	EAX	Lafayette	42 min
Sep 18, 7:50 PM CDT	Special Weather Statement	EAX	Macon	40 min
Sep 18, 7:53 PM CDT	Special Weather Statement	EAX	Putnam	52 min
Sep 18, 7:59 PM CDT	Special Weather Statement	EAX	Howard	46 min
Sep 18, 8:00 PM CDT	Severe Thunderstorm Warning	EAX	Pettis	30 min
Sep 18, 8:06 PM CDT	Areal Flood Advisory	EAX	Chariton, Howard, Saline	4 hr
Sep 18, 8:16 PM CDT	Severe Thunderstorm Warning	EAX	Chariton, Howard, Saline	29 min
Sep 18, 8:27 PM CDT	Special Weather Statement	EAX	Jackson	33 min
Sep 18, 8:37 PM CDT	Severe Thunderstorm Warning	EAX	Jackson, Lafayette	23 min
Sep 18, 8:44 PM CDT	Severe Thunderstorm Warning	EAX	Cooper, Howard	31 min
Sep 18, 9:08 PM CDT	Areal Flood Advisory	EAX	Adair, Grundy, Mercer, Putnam, Schuyler, Sullivan	7 hr
Sep 18, 9:11 PM CDT	Special Weather Statement	EAX	Jackson	49 min
Sep 18, 9:13 PM CDT	River Flood Warning	EAX	Jackson	9 hr
Sep 18, 9:13 PM CDT	Special Weather Statement	EAX	Johnson	47 min
Sep 18, 9:28 PM CDT	Severe Thunderstorm Warning	EAX	Adair, Macon	32 min
Sep 18, 9:49 PM CDT	Special Weather Statement	EAX	Mercer	41 min
Sep 18, 10:01 PM CDT	Flash Flood Warning	EAX	Adair, Grundy, Macon, Mercer, Putnam, Schuyler and 1 more	14 hr
Sep 18, 10:11 PM CDT	Severe Thunderstorm Warning	EAX	Jackson, Lafayette	26 min
Sep 18, 10:21 PM CDT	Areal Flood Advisory	EAX	Clay, Jackson, Platte	118 min
Sep 18, 10:51 PM CDT	Severe Thunderstorm Warning	EAX	Clay, Jackson	24 min
Sep 18, 10:56 PM CDT	Flash Flood Warning	EAX	Clay, Jackson, Platte, Ray	6 hr
Sep 18, 11:17 PM CDT	Severe Thunderstorm Warning	EAX	Adair	21 min
Sep 18, 11:20 PM CDT	Severe Thunderstorm Warning	EAX	Clay, Jackson	25 min
Sep 18, 11:25 PM CDT	Flash Flood Warning	EAX	Clay, Clinton, Platte	6 hr
Sep 18, 11:25 PM CDT	Severe Thunderstorm Warning	EAX	Clay	35 min
Sep 19, 12:05 AM CDT	Special Weather Statement	EAX	Caldwell	40 min
Sep 19, 12:10 AM CDT	Severe Thunderstorm Warning	EAX	Clay	35 min
Sep 19, 12:36 AM CDT	Special Weather Statement	EAX	Grundy	39 min
Sep 19, 12:41 AM CDT	Severe Thunderstorm Warning	EAX	Clay	34 min
Sep 19, 12:58 AM CDT	Severe Thunderstorm Warning	EAX	Platte	32 min
Sep 19, 1:15 AM CDT	Special Weather Statement	EAX	Clinton	45 min
Sep 19, 1:29 AM CDT	Special Weather Statement	EAX	Clinton	46 min
Sep 19, 1:32 AM CDT	Severe Thunderstorm Warning	EAX	Buchanan, Clinton, Platte	28 min
Sep 19, 1:34 AM CDT	Severe Thunderstorm Warning	EAX	DeKalb	26 min
Sep 19, 1:51 AM CDT	Special Weather Statement	EAX	Mercer	39 min
Sep 19, 1:56 AM CDT	River Flood Warning	EAX	Johnson, Pettis	28 hr
Sep 19, 2:00 AM CDT	Special Weather Statement	EAX	Clinton	45 min
Sep 19, 2:01 AM CDT	Severe Thunderstorm Warning	EAX	Daviess, DeKalb	29 min
Sep 19, 2:32 AM CDT	Special Weather Statement	EAX	Daviess	43 min
Sep 19, 3:48 AM CDT	Flash Flood Warning	EAX	Harrison, Worth	8 hr
Sep 19, 3:55 AM CDT	Severe Thunderstorm Warning	EAX	Harrison	35 min
Sep 19, 4:11 AM CDT	Severe Thunderstorm Warning	EAX	Daviess, Harrison	34 min
Sep 19, 4:42 AM CDT	Special Weather Statement	EAX	Grundy	48 min
Sep 19, 5:01 AM CDT	Flash Flood Warning	EAX	Chariton, Daviess, DeKalb, Gentry, Grundy, Harrison and 5 more	7 hr
Sep 19, 5:14 AM CDT	Special Weather Statement	EAX	Daviess	31 min
Sep 19, 5:46 AM CDT	Special Weather Statement	EAX	Linn	29 min
Sep 19, 5:48 AM CDT	Special Weather Statement	EAX	Livingston	27 min
Sep 19, 6:48 AM CDT	Areal Flood Advisory	EAX	Carroll, Chariton, Howard, Livingston, Macon, Randolph	5 hr
Sep 19, 8:52 AM CDT	River Flood Warning	EAX	Chariton, Macon	21 hr
Sep 19, 8:52 AM CDT	River Flood Warning	EAX	Linn, Livingston	45 hr
Sep 19, 8:52 AM CDT	River Flood Warning	EAX	Carroll, Chariton, Linn, Livingston	10 days
Sep 19, 11:51 AM CDT	Areal Flood Warning	EAX	Adair, Chariton, Daviess, Gentry, Grundy, Harrison and 7 more	24 hr
Sep 18, 10:22 PM CDT	Special Weather Statement	EAX	Wyandotte	38 min
Sep 18, 11:14 PM CDT	Severe Thunderstorm Warning	EAX	Leavenworth	46 min
Sep 18, 11:59 PM CDT	Severe Thunderstorm Warning	EAX	Leavenworth	31 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2010 Severe Thunderstorm Warnings in Kansas, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.