Alert archive / Missouri / Frost Advisories in 2023

Frost Advisory 1, NWS Kansas City, MO

April 5, 20236 counties in Missouri; Linn County, Miami County, Kansas

NWS Kansas City, MO issued this frost advisory at Apr 5, 2023, 2:13 PM CDT for 6 counties in Missouri; Linn County, Miami County, Kansas. It took effect at Apr 6, 2023, 4:00 AM CDT. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued: Apr 5, 2023, 2:13 PM CDT (19:13 UTC)
In effect from: Apr 6, 2023, 4:00 AM CDT
Expired: Apr 6, 2023, 8:00 AM CDT
In force: 4 hr
Issued by: NWS Kansas City, MO

Counties Linn County, KS, Miami County, KS, Bates County, MO, Cass County, MO, Cooper County, MO, Henry County, MO, Johnson County, MO, Pettis County, MO

The radar

The Pleasant Hill radar (KEAX), 37 km from the middle of the area, began a volume at 19:15 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, 7.2 hours before the alert went out and 184 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: 530 m above ground
0-6 km bulk shear: 83 kt
0-1 km storm-relative helicity: -94 m²/s²
0-3 km storm-relative helicity: 24 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this frost 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 frost advisory went out at Apr 5, 12:33 PM CDT, 1 hour 40 minutes earlier.

Area forecast discussion, Apr 5, 12:33 PM CDT, 1 hour 40 minutes before

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Hazardous weather outlook, Apr 5, 5:06 AM CDT, 9 hours 7 minutes before

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In the hours before

Local storm report, Apr 5, 8:24 AM CDT, 5 hours 49 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 4, 7:00 PM CDT	Severe Thunderstorm Warning	EAX	Atchison, Holt, Nodaway	45 min
Apr 4, 7:41 PM CDT	Severe Thunderstorm Warning	EAX	Andrew, Holt, Nodaway	49 min
Apr 4, 8:17 PM CDT	Severe Thunderstorm Warning	EAX	Andrew, Buchanan, Holt, Platte	43 min
Apr 4, 8:20 PM CDT	Severe Thunderstorm Warning	EAX	Andrew, Gentry, Nodaway, Worth	40 min
Apr 4, 9:01 PM CDT	Severe Thunderstorm Warning	EAX	Andrew, Buchanan, Platte	44 min
Apr 4, 9:40 PM CDT	Severe Thunderstorm Warning	EAX	Buchanan, Clinton, DeKalb, Platte	35 min
Apr 4, 9:49 PM CDT	Severe Thunderstorm Warning	EAX	Platte	26 min
Apr 4, 11:45 PM CDT	Special Weather Statement	EAX	Sullivan	30 min
Apr 5, 12:47 AM CDT	Severe Thunderstorm Warning	EAX	Bates, Cass	28 min
Apr 5, 12:57 AM CDT	Special Weather Statement	EAX	Clay	33 min
Apr 5, 1:20 AM CDT	Special Weather Statement	EAX	Caldwell	25 min
Apr 5, 1:23 AM CDT	Special Weather Statement	EAX	Johnson	37 min
Apr 5, 1:34 AM CDT	Severe Thunderstorm Warning	EAX	Henry, Johnson, Lafayette, Pettis	26 min
Apr 5, 1:57 AM CDT	Severe Thunderstorm Warning	EAX	Cooper, Johnson, Lafayette, Pettis, Saline	33 min
Apr 5, 2:03 AM CDT	Special Weather Statement	EAX	Bates, Henry	27 min
Apr 5, 2:12 AM CDT	Special Weather Statement	EAX	Carroll	33 min
Apr 5, 2:20 AM CDT	Severe Thunderstorm Warning	EAX	Henry, Johnson, Pettis	25 min
Apr 5, 2:37 AM CDT	Special Weather Statement	EAX	Cooper, Howard	23 min
Apr 5, 2:42 AM CDT	Severe Thunderstorm Warning	EAX	Cooper, Henry, Johnson, Pettis	33 min
Apr 5, 3:04 AM CDT	Severe Thunderstorm Warning	EAX	Howard, Randolph	13 min
Apr 5, 3:13 AM CDT	Special Weather Statement	EAX	Cooper, Henry, Howard, Pettis	47 min
Apr 4, 11:48 PM CDT	Special Weather Statement	EAX	Leavenworth	27 min
Apr 5, 12:27 AM CDT	Severe Thunderstorm Warning	EAX	Linn	33 min
Apr 5, 12:31 AM CDT	Special Weather Statement	EAX	Johnson, Leavenworth, Miami, Wyandotte	29 min
Apr 5, 1:11 AM CDT	Special Weather Statement	EAX	Linn	34 min

Nearby

Frost Advisories in Missouri, 2023 Frost Advisories in Kansas, 2023 Every frost advisory in 2023

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.