Alert archive / Missouri / Flash Flood Watches in 2009

Flash Flood Watch 10, NWS Kansas City, MO

June 15, 200937 counties in Missouri; 7 counties in Kansas

NWS Kansas City, MO issued this flash flood watch at Jun 15, 2009, 3:04 PM CDT for 37 counties in Missouri; 7 counties in Kansas. It took effect at Jun 15, 2009, 7:00 PM CDT. It was in force for 14 hr.

The area

The counties it named.

The facts

Issued: Jun 15, 2009, 3:04 PM CDT (20:04 UTC)
In effect from: Jun 15, 2009, 7:00 PM CDT
Expired: Jun 16, 2009, 8:40 AM CDT
In force: 14 hr
Issued by: NWS Kansas City, MO
Flood severity: None

All 44 counties

Atchison County, KS, Doniphan County, KS, Johnson County, KS, Leavenworth County, KS, Linn County, KS, Miami County, KS, Wyandotte County, KS, Adair County, MO, Andrew County, MO, Atchison County, MO, Bates County, MO, Buchanan County, MO, Caldwell County, MO, Carroll County, MO, Cass County, MO, Chariton County, MO, Clay County, MO, Clinton County, MO, Cooper County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Henry County, MO, Holt County, MO, Howard County, MO, Jackson County, MO, Johnson County, MO, Lafayette County, MO, Linn County, MO, Livingston County, MO, Macon County, MO, Mercer County, MO, Nodaway County, MO, Pettis County, MO, Platte County, MO, Putnam County, MO, Randolph County, MO, Ray County, MO, Saline County, MO, Schuyler County, MO, Sullivan County, MO, Worth County, MO

The radar

The Pleasant Hill radar (KEAX), 84 km from the middle of the area, began a volume at 20:04 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 12:00Z, 8.1 hours before the alert went out and 154 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: 278 J/kg
Mixed-layer CIN: -118 J/kg
Mixed-layer LCL: 532 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 98 m²/s²
0-3 km storm-relative helicity: 190 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.6

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood watch 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 flash flood watch went out at Jun 15, 12:43 PM CDT, 2 hours 21 minutes earlier.

Area forecast discussion, Jun 15, 12:43 PM CDT, 2 hours 21 minutes before

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Hazardous weather outlook, Jun 15, 12:58 PM CDT, 2 hours 6 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1258 PM CDT MON JUN 15 2009

KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040-
043>046-053-054-161800-
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 MON JUN 15 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

IN THE WAKE OF THIS MORNINGS THUNDERSTORM ACTIVITY...AN OUTFLOW
BOUNDARY HAS SPREAD ACROSS THE EXTREME SOUTHERN PORTIONS OF THE
OUTLOOK AREA...FROM CLINTON NORTHWESTWARD TO EMPORIA AND TOPEKA.
STRONG INSTABILITY IS DEVELOPING ALONG AND SOUTH OF THIS
BOUNDARY...WITH THE POTENTIAL FOR ISOLATED TO SCATTERED THUNDERSTORM
DEVELOPMENT OVER THE FAR SOUTHERN AND WESTERN PORTIONS OF THE
OUTLOOK AREA EARLY THIS AFTERNOON. SHOULD SEVERE STORMS DEVELOP...THE
PRIMARY THREATS WOULD BE LARGE HAIL AND DAMAGING WINDS.

ANOTHER LARGE COMPLEX OF THUNDERSTORMS IS EXPECTED TO AGAIN DEVELOP
ACROSS CENTRAL KANSAS MONDAY NIGHT...AND MOVE INTO THE OUTLOOK AREA
TONIGHT. THESE STORMS WILL TRY TO RIDE SOUTHEAST ALONG A HIGHLY
UNSTABLE AIRMASS SOUTH OF A SURFACE WARM FRONT FROM CENTRAL KANSAS
INTO SOUTH CENTRAL MISSOURI. SHOULD THESE STORMS HOLD THEIR INTENSITY
AS THEY REACH THE AREA AFTER MIDNIGHT...LARGE HAIL AND DAMAGING WINDS
WOULD BE THE PRIMARY THREATS. THE AREA WHICH COULD HAVE THE HIGHEST
CHANCE OF SEEING SEVERE WEATHER WOULD BE ALONG AND SOUTHWEST OF A
LINE FROM MARYVILLE TO SEDALIA.

THIS COMPLEX WILL BRING AN ADDITIONAL CHANCE FOR HEAVY AND EXCESSIVE
RAINFALL ACROSS MUCH OF THE OUTLOOK AREA...LEADING TO THE POTENTIAL
FOR LOCALIZED FLASH FLOODING AND RIVER FLOODING.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

THUNDERSTORMS WILL BE ONGOING ACROSS MUCH OF THE OUTLOOK AREA TUESDAY
MORNING. WHILE THE SEVERE THREAT FROM THESE STORMS WILL BE
WANING...HEAVY RAIN MAY CONTINUE THROUGH THE LATE MORNING. SHOULD
THIS THUNDERSTORM COMPLEX CLEAR THE AREA EARLY ENOUGH IN THE
DAY...STRONG INSTABILITY WILL DEVELOP LEADING TO AN ADDITIONAL THREAT
FOR STRONG TO SEVERE THUNDERSTORMS TUESDAY AFTERNOON AND EVENING. THE
LOCATION OF OUTFLOW BOUNDARIES AND OTHER LOCALIZED ENHANCEMENTS WILL
BE KEY TO THE POTENTIAL FOR THIS SEVERE WEATHER. THE PRIMARY THREATS
FOR THIS ACTIVITY WOULD BE FROM LARGE HAIL AND DAMAGING WINDS.

AN ADDITIONAL THREAT FOR THUNDERSTORMS WILL ARRIVE THURSDAY NIGHT
INTO FRIDAY AHEAD OF A COLD FRONT. DUE TO A RATHER WARM AIRMASS
DEVELOPING AHEAD OF THIS FRONT...THE POTENTIAL EXISTS FOR STRONG TO
SEVERE THUNDERSTORM DEVELOPMENT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON ACROSS EASTERN KANSAS
AND EXTREME WESTERN MISSOURI...AS WELL AS SOUTH AND WEST OF A LINE
FROM MARYVILLE TO SEDALIA OVERNIGHT. SPOTTER ACTIVATION MAY ALSO BE
NECESSARY TUESDAY AFTERNOON. SPOTTERS ARE URGED TO REPORT HEAVY
RAINFALL TOTALS.

DUX

In the hours before

Local storm report, Jun 15, 10:52 AM CDT, 4 hours 12 minutes before

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Local storm report, Jun 15, 11:18 AM CDT, 3 hours 46 minutes before

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Local storm report, Jun 15, 1:19 PM CDT, 1 hour 45 minutes before

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Local storm report, Jun 15, 1:22 PM CDT, 1 hour 42 minutes before

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Local storm report, Jun 15, 1:33 PM CDT, 1 hour 31 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 15, 1:08 AM CDT	Areal Flood Advisory	EAX	Andrew, Holt	6 hr
Jun 15, 2:16 AM CDT	Areal Flood Advisory	EAX	Andrew, DeKalb	5 hr
Jun 15, 2:48 AM CDT	Flash Flood Warning	EAX	Andrew, DeKalb, Holt	5 hr
Jun 15, 3:23 AM CDT	Areal Flood Advisory	EAX	Daviess	5 hr
Jun 15, 3:26 AM CDT	Special Weather Statement	EAX	Bates	34 min
Jun 15, 4:59 AM CDT	Flash Flood Warning	EAX	Daviess	4 hr
Jun 15, 6:50 AM CDT	Areal Flood Advisory	EAX	Chariton, Linn, Livingston, Macon, Randolph	6 hr
Jun 15, 7:31 AM CDT	Areal Flood Warning	EAX	Andrew, Buchanan, DeKalb, Holt	10 hr
Jun 15, 8:03 AM CDT	Areal Flood Advisory	EAX	Cass, Clay, Jackson, Platte	4 hr
Jun 15, 8:41 AM CDT	River Flood Warning	EAX	Buchanan	4 days
Jun 15, 8:41 AM CDT	River Flood Warning	EAX	Platte	6 days
Jun 15, 8:41 AM CDT	River Flood Warning	EAX	Platte	6 days
Jun 15, 8:46 AM CDT	Areal Flood Warning	EAX	Daviess	9 hr
Jun 15, 8:57 AM CDT	Areal Flood Advisory	EAX	Johnson, Pettis	6 hr
Jun 15, 10:34 AM CDT	River Flood Warning	EAX	Johnson, Pettis	67 hr
Jun 15, 10:34 AM CDT	River Flood Warning	EAX	Cooper, Saline	7 days
Jun 15, 10:34 AM CDT	River Flood Warning	EAX	Daviess, Gentry	13 hr
Jun 15, 10:34 AM CDT	River Flood Warning	EAX	Linn, Livingston	57 hr
Jun 15, 10:34 AM CDT	River Flood Warning	EAX	Carroll, Chariton, Linn, Livingston	4 days
Jun 15, 10:34 AM CDT	River Flood Warning	EAX	Howard	4 hr
Jun 15, 12:09 PM CDT	River Flood Warning	EAX	Cooper	65 hr
Jun 15, 4:48 PM CDT	River Flood Warning	EAX	Cooper	51 hr
Jun 15, 8:25 AM CDT	Special Weather Statement	EAX	Leavenworth	35 min

Nearby

Flash Flood Watches in Missouri, 2009 Flash Flood Watches in Kansas, 2009 Every flash flood watch 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.