Alert archive / Missouri / Flash Flood Warnings in 1989

Flash Flood Warning 12, NWS Kansas City, MO

September 9, 1989Clay County, Clinton County, Missouri

NWS Kansas City, MO issued this flash flood warning at Sep 9, 1989, 4:13 AM CDT for Clay County, Clinton County, Missouri. It was in force for 57 min.

The area

The counties it named.

The facts

Issued: Sep 9, 1989, 4:13 AM CDT (09:13 UTC)
Expired: Sep 9, 1989, 5:10 AM CDT
In force: 57 min
Issued by: NWS Kansas City, MO
Area: Whole counties

Counties Clay County, MO, Clinton County, MO

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 9.2 hours before the alert went out and 117 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: 794 J/kg
Mixed-layer CIN: -111 J/kg
Mixed-layer LCL: 964 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 457 m²/s²
0-3 km storm-relative helicity: 592 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 19.7

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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.

In the hours before

Special weather statement, Sep 8, 10:32 PM CDT, 5 hours 41 minutes before

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Special weather statement, Sep 8, 10:35 PM CDT, 5 hours 38 minutes before

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Special weather statement, Sep 8, 11:37 PM CDT, 4 hours 36 minutes before

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Special weather statement, Sep 9, 3:06 AM CDT, 1 hour 7 minutes before

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Local storm report, Sep 9, 3:13 AM CDT, 1 hour before

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Local storm report, Sep 9, 3:30 AM CDT, 43 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 8, 7:24 PM CDT	Severe Thunderstorm Warning	EAX	Platte	51 min
Sep 8, 8:15 PM CDT	Flash Flood Warning	EAX	Clay, Platte	3 hr
Sep 8, 9:11 PM CDT	Flash Flood Warning	EAX	Andrew, Nodaway	5 hr
Sep 8, 11:15 PM CDT	Flash Flood Warning	EAX	Clay, Platte	3 hr
Sep 9, 4:13 AM CDT	Flash Flood Warning	EAX	Platte	57 min

Nearby

Flash Flood Warnings in Missouri, 1989 Every flash flood warning in 1989

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.