Alert archive / Missouri / Flash Flood Warnings in 2009

Flash Flood Warning 50, NWS Paducah, KY

August 10, 2009Butler County, Ripley County, Missouri

NWS Paducah, KY issued this flash flood warning at Aug 10, 2009, 1:46 PM CDT for Butler County, Ripley County, Missouri. It was in force for 119 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: Aug 10, 2009, 1:46 PM CDT (18:46 UTC)
Expired: Aug 10, 2009, 3:45 PM CDT
In force: 119 min
Issued by: NWS Paducah, KY
Area: Storm-based polygon
Flood severity: None

Counties Butler County, MO, Ripley County, MO

The radar

The Memphis radar (KNQA), 164 km from the middle of the area, began a volume at 18:46 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

Little Rock, AR (KLZK), launched 12:00Z, 6.8 hours before the alert went out and 215 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: 2453 J/kg
Mixed-layer CIN: -53 J/kg
Mixed-layer LCL: 911 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 48 m²/s²
0-3 km storm-relative helicity: 54 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

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

NWS Paducah, KY wrote its last area forecast discussion before this flash flood warning went out at Aug 10, 12:52 PM CDT, 54 minutes earlier.

Area forecast discussion, Aug 10, 12:52 PM CDT, 54 minutes before

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Hazardous weather outlook, Aug 10, 5:02 AM CDT, 8 hours 44 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PADUCAH KY
502 AM CDT MON AUG 10 2009

ILZ075>078-080>094-INZ081-082-085>088-KYZ001>022-MOZ076-086-087-
100-107>112-114-111000-
JEFFERSON-WAYNE IL-EDWARDS-WABASH-PERRY IL-FRANKLIN-HAMILTON-
WHITE-JACKSON-WILLIAMSON-SALINE-GALLATIN-UNION IL-JOHNSON-POPE-
HARDIN-ALEXANDER-PULASKI-MASSAC-GIBSON-PIKE-POSEY-VANDERBURGH-
WARRICK-SPENCER-FULTON-HICKMAN-CARLISLE-BALLARD-MCCRACKEN-GRAVES-
LIVINGSTON-MARSHALL-CALLOWAY-CRITTENDEN-LYON-TRIGG-CALDWELL-
UNION KY-WEBSTER-HOPKINS-CHRISTIAN-HENDERSON-DAVIESS-MCLEAN-
MUHLENBERG-TODD-PERRY MO-BOLLINGER-CAPE GIRARDEAU-WAYNE MO-CARTER-
RIPLEY-BUTLER-STODDARD-SCOTT-MISSISSIPPI-NEW MADRID-
502 AM CDT MON AUG 10 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHERN
ILLINOIS...SOUTHWEST INDIANA...WESTERN KENTUCKY AND SOUTHEAST
MISSOURI.

.DAY ONE...TODAY AND TONIGHT

AN OUTFLOW BOUNDARY JUST NORTHWEST OF THE AREA EARLY THIS MORNING
IS EXPECTED TO PROVIDE A FOCUS FOR THUNDERSTORM DEVELOPMENT OVER
SOUTHEAST MISSOURI AND SOUTHERN ILLINOIS BY MID DAY. THE STORMS
WILL THEN SPREAD EASTWARD INTO SOUTHWEST INDIANA AND POSSIBLY
WEST KENTUCKY THROUGH THE AFTERNOON. A FEW OF THE STORMS MAY
INTENSIFY TO SEVERE LEVELS AND PRODUCE DAMAGING WINDS...AND MAYBE
EVEN SOME LARGE HAIL. HOWEVER...LOCALLY HEAVY RAINFALL WILL BE THE
PRIMARY CONCERN WITH ANY THUNDERSTORMS TODAY. THE STORMS MAY
LINGER INTO THE EVENING HOURS...BUT THE SEVERE POTENTIAL WILL
SUBSIDE WITH SUNSET.

HEAT INDEX VALUES WILL REACH THE 100 DEGREE MARK BY NOON OVER
MUCH OF THE AREA. PLEASE REFER TO THE SPECIAL WEATHER STATEMENT
FOR MORE INFORMATION.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

THUNDERSTORMS ARE LIKELY TUESDAY...AS A COLD FRONT MOVES THROUGH
THE REGION. A FEW OF THE STORMS MAY BRIEFLY APPROACH SEVERE
LEVELS...WITH THE POTENTIAL FOR DAMAGING WINDS AND LARGE HAIL.
HOWEVER...LOCALLY HEAVY RAINFALL WILL BE THE PRIMARY CONCERN. THE
STORMS WILL COME TO AN END FROM NORTHWEST TO SOUTHEAST LATE
TUESDAY AND TUESDAY EVENING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUESTED POSSIBLY AS EARLY AS NOON
TODAY OVER SOUTHEAST MISSOURI AND SOUTHERN ILLINOIS...AND LATER
THIS AFTERNOON OVER THE EVANSVILLE TRI STATE.

SPOTTER ACTIVATION MAY BE NEEDED THROUGHOUT THE AREA ON
TUESDAY...PRIMARILY IN THE AFTERNOON.

DRS

The office that day

Everything else NWS Paducah, KY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 10, 5:15 PM CDT	Areal Flood Advisory	PAH	White	2 hr
Aug 10, 1:17 PM CDT	Areal Flood Advisory	PAH	Butler, Ripley	118 min

Nearby

Flash Flood Warnings in Missouri, 2009 Every flash flood 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.