Alert archive / Missouri / Frost Advisories in 2022

Frost Advisory 1, NWS Kansas City, MO

April 13, 202216 counties in Missouri; Johnson County, Linn County, Miami County, Kansas

NWS Kansas City, MO issued this frost advisory at Apr 13, 2022, 2:46 PM CDT for 16 counties in Missouri; Johnson County, Linn County, Miami County, Kansas. It took effect at Apr 14, 2022, 1:00 AM CDT. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued
Apr 13, 2022, 2:46 PM CDT (19:46 UTC)
In effect from
Apr 14, 2022, 1:00 AM CDT
Expired
Apr 14, 2022, 9:00 AM CDT
In force
8 hr
Issued by
NWS Kansas City, MO

Counties Johnson County, KS, Linn County, KS, Miami County, KS, Bates County, MO, Carroll County, MO, Cass County, MO, Chariton County, MO, Clay County, MO, Cooper County, MO, Henry County, MO, Howard County, MO, Jackson County, MO, Johnson County, MO, Lafayette County, MO, Macon County, MO, Pettis County, MO, Randolph County, MO, Ray County, MO, Saline County, MO

The radar

The Pleasant Hill radar (KEAX), 50 km from the middle of the area, began a volume at 19:47 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, 7.8 hours before the alert went out and 165 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-pSkew-T log-p diagram, Topeka, KS at 12:00Z on 2022-04-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Topeka, KS at 12:00Z on 2022-04-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -215 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
1589 m above ground
0-6 km bulk shear
77 kt
0-1 km storm-relative helicity
-215 m²/s²
0-3 km storm-relative helicity
355 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 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 13, 12:37 PM CDT, 2 hours 9 minutes earlier.

Area forecast discussion, Apr 13, 12:37 PM CDT, 2 hours 9 minutes before
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Hazardous weather outlook, Apr 13, 5:05 AM CDT, 9 hours 41 minutes before
Hazardous Weather Outlook
National Weather Service Kansas City/Pleasant Hill MO
505 AM CDT Wed Apr 13 2022

KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040-
043>046-053-054-141015-
Atchison KS-Miami-Linn KS-Doniphan-Leavenworth-Wyandotte-Johnson KS-
Atchison MO-Nodaway-Worth-Gentry-Harrison-Mercer-Putnam-Schuyler-
Holt-Andrew-De Kalb-Daviess-Grundy-Sullivan-Adair-Buchanan-Clinton-
Caldwell-Livingston-Linn MO-Macon-Platte-Clay-Ray-Carroll-Chariton-
Randolph-Jackson-Lafayette-Saline-Howard-Cass-Johnson MO-Pettis-
Cooper-Bates-Henry-
505 AM CDT Wed Apr 13 2022

This hazardous weather outlook is for northwest...north central and
west central Missouri...as well as extreme eastern Kansas.

.DAY ONE...Today and Tonight

 Strong to severe storms will be possible this afternoon across
 portions of central Missouri with hail and winds the primary
 threats.

 Sub-freezing temperatures possible across northeast Kansas and
 northwest Missouri overnight tonight.

 More detailed information can be accessed at...
 https://www.weather.gov/eax/hwo

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

 No hazardous weather expected.

 More detailed information can be accessed at...
 https://www.weather.gov/eax/hwo

The office that day

Everything else NWS Kansas City, MO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 12, 8:47 PM CDTSevere Thunderstorm WarningEAXAtchison43 min
Apr 12, 9:27 PM CDTSpecial Weather StatementEAXAtchison33 min
Apr 12, 9:57 PM CDTSpecial Weather StatementEAXAtchison33 min
Apr 12, 10:28 PM CDTSpecial Weather StatementEAXAtchison32 min
Apr 12, 10:45 PM CDTSpecial Weather StatementEAXHolt30 min
Apr 12, 11:14 PM CDTSpecial Weather StatementEAXHolt31 min
Apr 13, 1:15 AM CDTSevere Thunderstorm WarningEAXClay, Clinton, Jackson, Platte30 min
Apr 13, 1:33 AM CDTSpecial Weather StatementEAXJackson27 min
Apr 13, 2:48 AM CDTFreeze WarningEAXAdair, Andrew, Atchison, Buchanan, Caldwell, Clinton and 15 more30 hr
Apr 13, 3:56 AM CDTSpecial Weather StatementEAXMacon19 min
Apr 13, 4:46 AM CDTSpecial Weather StatementEAXCooper14 min
Apr 13, 2:44 PM CDTFire Weather WatchEAXAndrew, Atchison, Buchanan, Holt, Nodaway, Platte12 hr
Apr 13, 12:51 AM CDTSpecial Weather StatementEAXJohnson, Leavenworth, Wyandotte24 min

Nearby

Frost Advisories in Missouri, 2022Frost Advisories in Kansas, 2022Every frost advisory in 2022

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.