Alert archive / Missouri / Freeze Warnings in 2018

Freeze Warning 1, NWS Kansas City, MO

April 14, 20188 counties in Missouri; 5 counties in Kansas

NWS Kansas City, MO issued this freeze warning at Apr 14, 2018, 3:11 AM CDT for 8 counties in Missouri; 5 counties in Kansas. It took effect at Apr 15, 2018, 2:00 AM CDT. It was in force for 7 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: Apr 14, 2018, 3:11 AM CDT (08:11 UTC)
In effect from: Apr 15, 2018, 2:00 AM CDT
Expired: Apr 15, 2018, 9:00 AM CDT
In force: 7 hr
Issued by: NWS Kansas City, MO

Counties Johnson County, KS, Leavenworth County, KS, Linn County, KS, Miami County, KS, Wyandotte County, KS, Bates County, MO, Cass County, MO, Clay County, MO, Henry County, MO, Jackson County, MO, Johnson County, MO, Lafayette County, MO, Platte County, MO

The radar

The Pleasant Hill radar (KEAX), 17 km from the middle of the area, began a volume at 08:12 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 (KFOE), launched 00:00Z, 8.2 hours before the alert went out and 104 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: 15 J/kg
Mixed-layer CIN: -128 J/kg
Mixed-layer LCL: 2012 m above ground
0-6 km bulk shear: 66 kt
0-1 km storm-relative helicity: -6 m²/s²
0-3 km storm-relative helicity: 162 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this freeze 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 freeze warning went out at Apr 13, 11:32 PM CDT, 3 hours 39 minutes earlier.

Area forecast discussion, Apr 13, 11:32 PM CDT, 3 hours 39 minutes before

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In the hours before

Special weather statement, Apr 13, 9:38 PM CDT, 5 hours 33 minutes before

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Special weather statement, Apr 13, 9:45 PM CDT, 5 hours 26 minutes before

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Special weather statement, Apr 13, 9:58 PM CDT, 5 hours 13 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
Apr 13, 7:05 PM CDT	Special Weather Statement	EAX	Clay	40 min
Apr 13, 7:09 PM CDT	Severe Thunderstorm Warning	EAX	Clay, Clinton, Platte	36 min
Apr 13, 7:12 PM CDT	Severe Thunderstorm Warning	EAX	Caldwell, Carroll, Clay, Livingston, Ray	48 min
Apr 13, 7:21 PM CDT	Special Weather Statement	EAX	Nodaway	39 min
Apr 13, 7:21 PM CDT	Severe Thunderstorm Warning	EAX	Clay, Jackson, Platte	39 min
Apr 13, 7:54 PM CDT	Severe Thunderstorm Warning	EAX	Platte	36 min
Apr 13, 7:55 PM CDT	Special Weather Statement	EAX	Clay	35 min
Apr 13, 7:57 PM CDT	Special Weather Statement	EAX	Caldwell, Livingston	33 min
Apr 13, 8:24 PM CDT	Special Weather Statement	EAX	Buchanan, Clinton, Platte	51 min
Apr 13, 8:25 PM CDT	Special Weather Statement	EAX	Caldwell	50 min
Apr 13, 8:28 PM CDT	Special Weather Statement	EAX	Livingston	47 min
Apr 13, 8:54 PM CDT	Special Weather Statement	EAX	Jackson	51 min
Apr 13, 9:03 PM CDT	Special Weather Statement	EAX	Clinton, Daviess, DeKalb	42 min
Apr 13, 9:38 PM CDT	Special Weather Statement	EAX	Harrison	52 min
Apr 13, 9:45 PM CDT	Special Weather Statement	EAX	Daviess	45 min
Apr 13, 9:58 PM CDT	Special Weather Statement	EAX	Harrison	32 min
Apr 13, 7:37 PM CDT	Special Weather Statement	EAX	Leavenworth	38 min

Nearby

Freeze Warnings in Missouri, 2018 Freeze Warnings in Kansas, 2018 Every freeze warning in 2018

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.