Alert archive / Kentucky / Frost Advisories in 2018

Frost Advisory 3, NWS Paducah, KY

April 19, 201822 counties in Kentucky; 13 counties in Illinois; 11 counties in Missouri

NWS Paducah, KY issued this frost advisory at Apr 19, 2018, 1:36 AM CDT for 22 counties in Kentucky; 13 counties in Illinois; 11 counties in Missouri. It took effect at Apr 20, 2018, 1:00 AM CDT. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued: Apr 19, 2018, 1:36 AM CDT (06:36 UTC)
In effect from: Apr 20, 2018, 1:00 AM CDT
Expired: Apr 20, 2018, 9:00 AM CDT
In force: 8 hr
Issued by: NWS Paducah, KY

All 46 counties

Alexander County, IL, Franklin County, IL, Gallatin County, IL, Hardin County, IL, Jackson County, IL, Johnson County, IL, Massac County, IL, Perry County, IL, Pope County, IL, Pulaski County, IL, Saline County, IL, Union County, IL, Williamson County, IL, Ballard County, KY, Caldwell County, KY, Calloway County, KY, Carlisle County, KY, Christian County, KY, Crittenden County, KY, Daviess County, KY, Fulton County, KY, Graves County, KY, Henderson County, KY, Hickman County, KY, Hopkins County, KY, Livingston County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, McLean County, KY, Muhlenberg County, KY, Todd County, KY, Trigg County, KY, Union County, KY, Webster County, KY, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, Mississippi County, MO, New Madrid County, MO, Perry County, MO, Ripley County, MO, Scott County, MO, Stoddard County, MO, Wayne County, MO

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 6.6 hours before the alert went out and 229 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: 9 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 1203 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 155 m²/s²
0-3 km storm-relative helicity: 59 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 Paducah, KY wrote its last area forecast discussion before this frost advisory went out at Apr 18, 6:20 PM CDT, 7 hours 16 minutes earlier.

Area forecast discussion, Apr 18, 6:20 PM CDT, 7 hours 16 minutes before

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Hazardous weather outlook, Apr 18, 3:50 PM CDT, 9 hours 46 minutes before

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The office that day

Everything else NWS Paducah, KY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 19, 1:36 AM CDT	Freeze Warning	PAH	Edwards, Hamilton, Jefferson, Wabash, Wayne, White	31 hr

Nearby

Frost Advisories in Kentucky, 2018 Frost Advisories in Illinois, 2018 Frost Advisories in Missouri, 2018 Every frost advisory 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.