Alert archive / Missouri / Areal Flood Warnings in 2011

Areal Flood Warning 5, NWS Kansas City, MO

June 21, 2011Holt County, Missouri

NWS Kansas City, MO issued this areal flood warning at Jun 21, 2011, 9:40 AM CDT for Holt County, Missouri. It was in force for 72 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 21, 2011, 9:40 AM CDT (14:40 UTC)
Expired: Jun 24, 2011, 9:30 AM CDT
In force: 72 hr
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Flood severity: None

County Holt County, MO

The radar

The Topeka radar (KTWX), 150 km from the middle of the area, began a volume at 14:37 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

Springfield, MO (KSGF), launched 12:00Z, 2.7 hours before the alert went out and 376 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: 1375 J/kg
Mixed-layer CIN: -85 J/kg
Mixed-layer LCL: 526 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 378 m²/s²
0-3 km storm-relative helicity: 378 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 12.4

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood warning 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 areal flood warning went out at Jun 21, 6:00 AM CDT, 3 hours 40 minutes earlier.

Area forecast discussion, Jun 21, 6:00 AM CDT, 3 hours 40 minutes before

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Hazardous weather outlook, Jun 21, 4:56 AM CDT, 4 hours 44 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 20, 8:44 PM CDT	Special Weather Statement	EAX	Atchison, Holt	46 min
Jun 20, 9:17 PM CDT	Special Weather Statement	EAX	Platte	28 min
Jun 20, 9:18 PM CDT	Special Weather Statement	EAX	Andrew, Buchanan, Holt, Nodaway	42 min
Jun 20, 9:47 PM CDT	Special Weather Statement	EAX	Clay, Platte	43 min
Jun 20, 10:03 PM CDT	Special Weather Statement	EAX	Andrew, Buchanan, Clinton, DeKalb, Gentry, Nodaway and 1 more	42 min
Jun 20, 10:28 PM CDT	Special Weather Statement	EAX	Clay, Jackson	47 min
Jun 20, 10:29 PM CDT	Special Weather Statement	EAX	Bates, Cass	46 min
Jun 20, 10:49 PM CDT	Special Weather Statement	EAX	Caldwell, Clinton, Daviess, DeKalb, Gentry, Harrison and 1 more	41 min
Jun 20, 10:56 PM CDT	Special Weather Statement	EAX	Carroll, Lafayette, Ray	49 min
Jun 20, 10:57 PM CDT	Special Weather Statement	EAX	Bates, Henry, Johnson	48 min
Jun 20, 11:03 PM CDT	Severe Thunderstorm Warning	EAX	Caldwell, Daviess, Livingston	42 min
Jun 20, 11:13 PM CDT	Severe Thunderstorm Warning	EAX	Daviess, Grundy, Harrison, Mercer	32 min
Jun 20, 11:37 PM CDT	Special Weather Statement	EAX	Grundy, Linn, Livingston, Mercer, Putnam, Sullivan	38 min
Jun 20, 11:40 PM CDT	Special Weather Statement	EAX	Carroll, Chariton, Cooper, Pettis, Saline	50 min
Jun 21, 12:25 AM CDT	Special Weather Statement	EAX	Cooper, Howard, Randolph	35 min
Jun 20, 9:45 PM CDT	Special Weather Statement	EAX	Linn, Miami	45 min

Nearby

Areal Flood Warnings in Missouri, 2011 Every areal flood warning in 2011

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.