Alert archive / Missouri / Wind Chill Advisories in 2009

Wind Chill Advisory 5, NWS Kansas City, MO

December 9, 200920 counties in Missouri; Atchison County, Doniphan County, Kansas

NWS Kansas City, MO issued this wind chill advisory at Dec 9, 2009, 3:39 PM CST for 20 counties in Missouri; Atchison County, Doniphan County, Kansas. It took effect at Dec 9, 2009, 6:00 PM CST. It was in force for 15 hr.

The area

The counties it named.

The facts

Issued: Dec 9, 2009, 3:39 PM CST (21:39 UTC)
In effect from: Dec 9, 2009, 6:00 PM CST
Expired: Dec 10, 2009, 9:00 AM CST
In force: 15 hr
Issued by: NWS Kansas City, MO

All 22 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, Linn 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), 141 km from the middle of the area, began a volume at 21:37 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

Topeka, KS (KTOP), launched 12:00Z, 9.7 hours before the alert went out and 178 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 750 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: -42 m²/s²
0-3 km storm-relative helicity: 43 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 wind chill advisory 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 wind chill advisory went out at Dec 9, 11:56 AM CST, 3 hours 43 minutes earlier.

Area forecast discussion, Dec 9, 11:56 AM CST, 3 hours 43 minutes before

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Hazardous weather outlook, Dec 9, 12:57 PM CST, 2 hours 42 minutes before

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In the hours before

Local storm report, Dec 9, 10:28 AM CST, 5 hours 11 minutes before

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Local storm report, Dec 9, 10:33 AM CST, 5 hours 6 minutes before

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Local storm report, Dec 9, 10:34 AM CST, 5 hours 5 minutes before

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Local storm report, Dec 9, 10:35 AM CST, 5 hours 4 minutes before

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Local storm report, Dec 9, 10:44 AM CST, 4 hours 55 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
Dec 9, 5:48 AM CST	Wind Advisory	EAX	Caldwell, Carroll, Chariton, Clinton, Cooper, Howard and 8 more	6 hr
Dec 9, 9:03 AM CST	Winter Weather Advisory	EAX	Adair, Andrew, Atchison, Buchanan, Daviess, DeKalb and 10 more	9 hr

Nearby

Wind Chill Advisories in Missouri, 2009 Wind Chill Advisories in Kansas, 2009 Every wind chill advisory 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.