Alert archive / Missouri / Flash Flood Watches in 2007
Flash Flood Watch 8, NWS Kansas City, MO
NWS Kansas City, MO issued this flash flood watch at Aug 23, 2007, 3:38 PM CDT for 19 counties in Missouri; Atchison County, Doniphan County, Kansas. It took effect at Aug 24, 2007, 1:00 AM CDT. It was in force for 10 hr.
The area
The counties it named.
The facts
- Issued
- Aug 23, 2007, 3:38 PM CDT (20:38 UTC)
- In effect from
- Aug 24, 2007, 1:00 AM CDT
- Expired
- Aug 24, 2007, 11:05 AM CDT
- In force
- 10 hr
- Issued by
- NWS Kansas City, MO
- Flood severity
- None
All 21 counties
Atchison County, KS, Doniphan County, KS, Adair County, MO, Andrew County, MO, Atchison County, MO, Buchanan County, MO, Caldwell County, MO, Clinton County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Holt County, MO, Livingston County, MO, Mercer County, MO, Nodaway County, MO, Putnam County, MO, Schuyler County, MO, Sullivan County, MO, Worth County, MO
The radar
The Pleasant Hill radar (KEAX), 142 km from the middle of the area, began a volume at 20:38 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
Omaha, NE (KOAX), launched 12:00Z, 8.6 hours before the alert went out and 233 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
- 51 J/kg
- Mixed-layer CIN
- -122 J/kg
- Mixed-layer LCL
- 586 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 207 m²/s²
- 0-3 km storm-relative helicity
- 205 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
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 Aug 23, 11:55 AM CDT, 3 hours 43 minutes earlier.
Area forecast discussion, Aug 23, 11:55 AM CDT, 3 hours 43 minutes before
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</html>Hazardous weather outlook, Aug 23, 2:05 PM CDT, 1 hour 33 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO 205 PM CDT THU AUG 23 2007 KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040- 043>046-053-054-241100- 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- 205 PM CDT THU AUG 23 2007 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 WIDELY SCATTERED THUNDERSTORMS ARE EXPECTED THIS AFTERNOON IN ADVANCE OF WEAK UPPER STORM SYSTEM MOVING EAST ACROSS EASTERN KANSAS. STRONG INSTABILITY ALONG WITH WEAK TO MODERATE SHEAR MAY LEAD TO THE DEVELOPMENT OF ISOLATED SEVERE THUNDERSTORMS THIS AFTERNOON AND EARLY THIS EVENING. THE PRIMARY THREATS ARE LARGE HAIL AND DAMAGING WINDS. LATER THIS EVENING...A SLOW MOVING COLD FRONT WILL ENTER EXTREME NORTHWESTERN MISSOURI WITH THE FRONT SLOWLY SAGGING SOUTH TO NEAR THE INTERSTATE 70 CORRIDOR BY DAYBREAK. AS A RESULT...THE SEVERE WEATHER THREAT WILL CONTINUE UNTIL THROUGH AT LEAST MIDNIGHT FOR AREAS NORTH OF A LINE FROM MOUND CITY KANSAS TO MARYVILLE. AS THE FRONT SLIDES SOUTHEAST TONIGHT...A CONVECTIVE COMPLEX WILL MOVE EAST INTO SOUTHEASTERN NEBRASKA AND EXTREME EASTERN KANSAS BY MIDNIGHT. AS THIS COMPLEX APPROACHES MISSOURI SHORTLY AFTER MIDNIGHT...THUNDERSTORMS WILL INCREASE IN COVERAGE ALONG THE FRONT WITH WIDESPREAD SHOWERS AND THUNDERSTORMS...MAINLY ALONG AND NORTH OF INTERSTATE 70 BY DAYBREAK. THE THUNDERSTORMS AFTER MIDNIGHT ARE EXPECTED TO BE MARGINALLY SEVERE WITH DAMAGING WINDS THE PRIMARY THREAT. THE MAIN CONCERN IS THE POTENTIAL FOR HEAVY RAINFALL LATE TONIGHT...ESPECIALLY NORTH OF A LINE FROM ST JOSEPH TO CHILLICOTHE TO MACON. AS A RESULT...A FLASH FLOOD WATCH WILL LIKELY BE ISSUED FOR LATE TONIGHT AND FRIDAY MORNING FOR AREAS ALONG AND NORTH OF THIS LINE. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY HEAVY RAINFALL WILL CONTINUE FOR AT LEAST THE MORNING HOURS ON FRIDAY AS THE FRONT SLIDES SOUTH TOWARD SOUTHERN MISSOURI AND A UPPER STORM SYSTEM APPROACHES. THE STORMS ARE NOT EXPECTED TO BE SEVERE DURING THE MORNING HOURS...BUT ADDITIONAL HEAVY RAINFALL IS LIKELY ACROSS MUCH OF THE OUTLOOK AREA. THE SEVERE THREAT DURING THE AFTERNOON HOURS ON FRIDAY IS DEPENDENT UPON HOW FAR SOUTH THE FRONT PROGRESSES. AT THE CURRENT TIME...THE FRONT IS EXPECTED TO STRETCH FROM MOUND CITY KANSAS EAST TO SEDALIA BY MID AFTERNOON WITH THE RISK OF SEVERE THUNDERSTORMS CONFINED TO CITIES SOUTH OF THIS LINE. THE PRIMARY THREATS ARE LARGE HAIL AND DAMAGING WINDS. THE PRECIPITATION IS EXPECTED TO EXIT THE OUTLOOK AREA BY SATURDAY MORNING. THUNDERSTORMS ARE ALSO POSSIBLE TUESDAY NIGHT AND WEDNESDAY. IT IS TOO EARLY TO DETERMINE WHETHER ANY STORMS WILL BE SEVERE. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED LATE THIS AFTERNOON AND THIS EVENING AND MAY ALSO BE POSSIBLE FRIDAY AFTERNOON AND EVENING FOR AREAS SOUTH OF A LINE FROM MOUND CITY KANSAS TO SEDALIA. SPOTTERS ARE ALSO ENCOURAGE TO REPORT RAINFALL REPORTS TONIGHT AND FRIDAY. DB
Nearby
Flash Flood Watches in Missouri, 2007Flash Flood Watches in Kansas, 2007Every flash flood watch in 2007
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.