Alert archive / Kentucky / Frost Advisories in 2021
Frost Advisory 5, NWS Louisville, KY
NWS Louisville, KY issued this frost advisory at Apr 30, 2021, 2:28 AM CDT for 28 counties in Kentucky; Jefferson County, Indiana. It took effect at May 1, 2021, 1:00 AM CDT. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- Apr 30, 2021, 2:28 AM CDT (07:28 UTC)
- In effect from
- May 1, 2021, 1:00 AM CDT
- Expired
- May 1, 2021, 7:25 AM CDT
- In force
- 6 hr
- Issued by
- NWS Louisville, KY
All 29 counties
Jefferson County, IN, Adair County, KY, Anderson County, KY, Bourbon County, KY, Boyle County, KY, Casey County, KY, Clark County, KY, Clinton County, KY, Cumberland County, KY, Fayette County, KY, Franklin County, KY, Garrard County, KY, Harrison County, KY, Henry County, KY, Jessamine County, KY, Lincoln County, KY, Madison County, KY, Marion County, KY, Mercer County, KY, Nelson County, KY, Nicholas County, KY, Russell County, KY, Scott County, KY, Shelby County, KY, Spencer County, KY, Taylor County, KY, Trimble County, KY, Washington County, KY, Woodford County, KY
The radar
The Louisville radar (KLVX), 94 km from the middle of the area, began a volume at 07:28 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
Cncnati-Daytn, OH (KILN), launched 00:00Z, 7.5 hours before the alert went out and 201 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 728 m above ground
- 0-6 km bulk shear
- 72 kt
- 0-1 km storm-relative helicity
- -159 m²/s²
- 0-3 km storm-relative helicity
- -122 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
The text
As transmitted.
090 WWUS73 KLMK 300728 NPWLMK URGENT - WEATHER MESSAGE National Weather Service Louisville KY 328 AM EDT Fri Apr 30 2021 KYZ035>037-039>043-047>049-055>057-066-067-302000- /O.NEW.KLMK.FR.Y.0005.210501T0600Z-210501T1300Z/ Franklin-Scott-Harrison-Anderson-Woodford-Fayette-Bourbon- Nicholas-Mercer-Jessamine-Clark-Boyle-Garrard-Madison-Casey- Lincoln- Including the cities of Frankfort, Georgetown, Cynthiana, Lawrenceburg, Versailles, Lexington, Paris, Carlisle, Harrodsburg, Nicholasville, Winchester, Danville, Lancaster, Richmond, Liberty, and Stanford 328 AM EDT Fri Apr 30 2021 ...FROST ADVISORY IN EFFECT FROM 2 AM TO 9 AM EDT SATURDAY... The National Weather Service in Louisville has issued a Frost Advisory, which is in effect from 2 AM to 9 AM EDT Saturday. * TEMPERATURE...Lows Saturday morning will be in the mid 30s, with lower readings possible in deeper valleys and sheltered rural locations. * IMPACTS...Vegetation sensitive to frost may be damaged or killed if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Frost Advisory means that widespread frost is expected. Sensitive outdoor plants may be killed if left uncovered. && $$ JML
2 follow-up statements
969 WWUS73 KLMK 301859 NPWLMK URGENT - WEATHER MESSAGE National Weather Service Louisville KY 259 PM EDT Fri Apr 30 2021 INZ079-KYZ032>034-038-045-046-054-065-077-078-081-082-011300- /O.EXA.KLMK.FR.Y.0005.210501T0600Z-210501T1300Z/ Jefferson-Trimble-Henry-Shelby-Spencer-Nelson-Washington-Marion- Taylor-Adair-Russell-Cumberland-Clinton- Including the cities of Madison, Bedford, Milton, New Castle, Shelbyville, Taylorsville, Bardstown, Springfield, Lebanon, Campbellsville, Columbia, Jamestown, Burkesville, and Albany 259 PM EDT Fri Apr 30 2021 /159 PM CDT Fri Apr 30 2021/ ...FROST ADVISORY IN EFFECT FROM 2 AM EDT /1 AM CDT/ TO 9 AM EDT /8 AM CDT/ SATURDAY... The National Weather Service in Louisville has issued a Frost Advisory, which is in effect from 2 AM EDT /1 AM CDT/ to 9 AM EDT /8 AM CDT/ Saturday. * TEMPERATURE...Lows Saturday morning will be in the mid 30s, with lower readings possible in deeper valleys and sheltered rural locations. * IMPACTS...Vegetation sensitive to frost may be damaged or killed if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Frost Advisory means that widespread frost is expected. Sensitive outdoor plants may be killed if left uncovered. && $$ KYZ035>037-039>043-047>049-055>057-066-067-011300- /O.CON.KLMK.FR.Y.0005.210501T0600Z-210501T1300Z/ Franklin-Scott-Harrison-Anderson-Woodford-Fayette-Bourbon- Nicholas-Mercer-Jessamine-Clark-Boyle-Garrard-Madison-Casey- Lincoln- Including the cities of Frankfort, Georgetown, Cynthiana, Lawrenceburg, Versailles, Lexington, Paris, Carlisle, Harrodsburg, Nicholasville, Winchester, Danville, Lancaster, Richmond, Liberty, and Stanford 259 PM EDT Fri Apr 30 2021 ...FROST ADVISORY REMAINS IN EFFECT FROM 2 AM TO 9 AM EDT SATURDAY... * TEMPERATURE...Lows Saturday morning will be in the mid 30s, with lower readings possible in deeper valleys and sheltered rural locations. * IMPACTS...Vegetation sensitive to frost may be damaged or killed if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Frost Advisory means that widespread frost is expected. Sensitive outdoor plants may be killed if left uncovered. && $$ CJP
176 WWUS73 KLMK 011225 NPWLMK URGENT - WEATHER MESSAGE National Weather Service Louisville KY 825 AM EDT Sat May 1 2021 ...FROST ADVISORY IS CANCELLED... INZ079-KYZ032>043-045>049-054>057-065>067-077-078-081-082-011330- /O.CAN.KLMK.FR.Y.0005.000000T0000Z-210501T1300Z/ Jefferson-Trimble-Henry-Shelby-Franklin-Scott-Harrison-Spencer- Anderson-Woodford-Fayette-Bourbon-Nicholas-Nelson-Washington- Mercer-Jessamine-Clark-Marion-Boyle-Garrard-Madison-Taylor-Casey- Lincoln-Adair-Russell-Cumberland-Clinton- Including the cities of Madison, Bedford, Milton, New Castle, Shelbyville, Frankfort, Georgetown, Cynthiana, Taylorsville, Lawrenceburg, Versailles, Lexington, Paris, Carlisle, Bardstown, Springfield, Harrodsburg, Nicholasville, Winchester, Lebanon, Danville, Lancaster, Richmond, Campbellsville, Liberty, Stanford, Columbia, Jamestown, Burkesville, and Albany 825 AM EDT Sat May 1 2021 /725 AM CDT Sat May 1 2021/ ...FROST ADVISORY IS CANCELLED... The National Weather Service in Louisville has cancelled the Frost Advisory. Temperatures have warmed into the upper 30s to mid 40s, so the Frost Advisory has been cancelled. $$ EBW
The office that day
Everything else NWS Louisville, KY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 29, 9:35 PM CDT | River Flood Warning | LMK | Ohio | 27 hr |
| Apr 29, 8:52 PM CDT | River Flood Advisory | LMK | Jefferson, Scott | 10 hr |
Nearby
Frost Advisories in Kentucky, 2021Frost Advisories in Indiana, 2021Every frost advisory in 2021
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.