Alert archive / Missouri / Flash Flood Watches in 2009
Flash Flood Watch 4, NWS Kansas City, MO
NWS Kansas City, MO issued this flash flood watch at Mar 23, 2009, 4:01 PM CDT for 37 counties in Missouri; 7 counties in Kansas. It took effect at Mar 23, 2009, 10:00 PM CDT. It was in force for 15 hr.
The area
The counties it named.
The facts
- Issued
- Mar 23, 2009, 4:01 PM CDT (21:01 UTC)
- In effect from
- Mar 23, 2009, 10:00 PM CDT
- Expired
- Mar 24, 2009, 1:00 PM CDT
- In force
- 15 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 21:04 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, 9.0 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.
- Mixed-layer CAPE
- 3 J/kg
- Mixed-layer CIN
- -529 J/kg
- Mixed-layer LCL
- 1190 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 332 m²/s²
- 0-3 km storm-relative helicity
- 505 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.0
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 Mar 23, 12:30 PM CDT, 3 hours 31 minutes earlier.
Area forecast discussion, Mar 23, 12:30 PM CDT, 3 hours 31 minutes before
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</html>Hazardous weather outlook, Mar 23, 1:11 PM CDT, 2 hours 50 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO 111 PM CDT MON MAR 23 2009 KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040- 043>046-053-054-241815- 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- 111 PM CDT MON MAR 23 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 GUSTY SOUTH WINDS WILL REMAIN SUSTAINED IN THE 25 TO 35 MPH RANGE THROUGH THE AFTERNOON HOURS WITH GUSTS INTO THE 40 TO 45 MPH RANGE AT TIMES AND A WIND ADVISORY REMAINS IN EFFECT THROUGH 7 PM. A COLD FRONT WILL BE APPROACHING FROM THE WEST THIS EVENING. SCATTERED THUNDERSTORMS WILL BE POSSIBLE THIS EVENING FROM SOUTHEAST AND EAST CENTRAL KANSAS INTO NORTHWEST MISSOURI...WELL AHEAD OF THE MAIN LINE OF STORMS ASSOCIATED WITH THE COLD FRONT. THE INSTABILITY WILL NOT BE AS GREAT WITH THE SCATTERED STORMS AHEAD OF THE FRONT...BUT THERE IS ENOUGH SHEAR TO BE OF CONCERN TO ORGANIZE THESE STORMS INTO SUPERCELL TYPE DEVELOPMENT THAT COULD SUSTAIN A LARGE HAIL AND DAMAGING WIND THREAT. THEN BY LATE EVENING THE DRY LINE AND COLD FRONT WILL BE SURGING NORTHEAST TOWARD NORTHEAST KANSAS AND NORTHWEST MISSOURI. THIS IS EXPECTED TO BRING THE STRONG TO SEVERE STORMS ASSOCIATED WITH THE FRONT INTO THIS REGION...WITH THE MORE LIKELY TIMEFRAME BEING AFTER 9 PM. THESE STORMS WILL HAVE THE POTENTIAL OF PRODUCING DAMAGING WINDS...LARGE HAIL AND ISOLATED TORNADOES. THEN AFTER MIDNIGHT AND DURING THE EARLY MORNING HOURS THE LINE OF STORMS ASSOCIATED WITH THE COLD FRONT SHOULD SWING EAST INTO EAST CENTRAL KANSAS AND WEST CENTRAL MISSOURI. AT THIS POINT...THE MAIN THREAT IS EXPECTED TO BE WINDS...HAIL AND VERY HEAVY RAINFALL. THE STORMS IN NORTHWEST MISSOURI WILL BE MOVING EAST INTO NORTH CENTRAL MISSOURI DURING THIS TIME FRAME WITH ALSO WINDS...HAIL AND HEAVY RAINFALL THE MAIN THREATS. THE EASTWARD PROGRESSION OF THE FRONT WILL BE SLOWED OVERNIGHT...SO REPEATED ROUNDS OF THUNDERSTORMS WITH HEAVY RAINFALL WILL BE POSSIBLE ACROSS AREAS FROM EASTERN KANSAS INTO NORTHWEST AND NORTH CENTRAL MISSOURI. CENTRAL MISSOURI...INCLUDING THE SEDALIA AND BOONVILLE AREAS...MAY NOT SEE THE HEAVIER RAIN UNTIL TOWARD DAYBREAK. WITH THE THREAT OF HEAVY RAINFALL...FLOODING ISSUES WILL BE A BIG CONCERN. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY ON TUESDAY...THE FRONT WILL LIKELY NOT MOVE EAST OF THE OUTLOOK AREA UNTIL EARLY AFTERNOON. UNTIL THAT TIME...THERE WILL BE THE POTENTIAL OF STRONG STORMS PRODUCING MORE HEAVY RAINFALL...MAINLY IN AREAS FROM EAST OF INTERSTATE 35...INTO NORTHEAST AND CENTRAL MISSOURI. SEVERE STORMS WILL BE LESS LIKELY...ALTHOUGH HAIL AND STRONG WINDS CAN NOT BE TOTALLY RULED OUT. ANOTHER STORM SYSTEM WILL BE MOVING INTO THE REGION FRIDAY AND FRIDAY NIGHT. THE MOST LIKELY TIME FRAME FOR THUNDERSTORMS WILL BE FRIDAY NIGHT...MAINLY IN AREAS TO THE SOUTH AND EAST OF KANSAS CITY...INTO CENTRAL MISSOURI. IT IS TOO EARLY TO TELL IF SEVERE WEATHER WILL OCCUR WITH THIS SYSTEM. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL LIKELY BE NEEDED...LATER THIS EVENING AND INTO THE EARLY MORNING HOURS ALONG AND WEST OF A LINE FROM BETHANY TO CLINTON. REPORTS OF FLOODING ARE REQUESTED TONIGHT AND ON TUESDAY. PC
Nearby
Flash Flood Watches in Missouri, 2009Flash Flood Watches in Kansas, 2009Every 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.