Alert archive / Tennessee / Frost Advisories in 2021
Frost Advisory 4, NWS Memphis, TN
NWS Memphis, TN issued this frost advisory at Oct 17, 2021, 3:00 PM CDT for 15 counties in Tennessee. It took effect at Oct 18, 2021, 4:00 AM CDT. It was in force for 5 hr.
The area
The counties it named.
The facts
- Issued
- Oct 17, 2021, 3:00 PM CDT (20:00 UTC)
- In effect from
- Oct 18, 2021, 4:00 AM CDT
- Expired
- Oct 18, 2021, 9:00 AM CDT
- In force
- 5 hr
- Issued by
- NWS Memphis, TN
Counties Benton County, TN, Carroll County, TN, Chester County, TN, Crockett County, TN, Decatur County, TN, Fayette County, TN, Gibson County, TN, Hardeman County, TN, Hardin County, TN, Haywood County, TN, Henderson County, TN, Henry County, TN, Madison County, TN, McNairy County, TN, Weakley County, TN
The radar
The Memphis radar (KNQA), 115 km from the middle of the area, began a volume at 20:04 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
Little Rock, AR (KLZK), launched 12:00Z, 8.0 hours before the alert went out and 150 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
- 2309 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- -63 m²/s²
- 0-3 km storm-relative helicity
- -29 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
586 WWUS74 KMEG 172000 NPWMEG URGENT - WEATHER MESSAGE National Weather Service Memphis TN 300 PM CDT Sun Oct 17 2021 TNZ003-004-020>022-050>055-089>092-180900- /O.NEW.KMEG.FR.Y.0004.211018T0900Z-211018T1400Z/ Weakley-Henry-Gibson-Carroll-Benton TN-Haywood-Crockett-Madison- Chester-Henderson-Decatur-Fayette-Hardeman-McNairy-Hardin- Including the cities of Martin, Dresden, Paris, Humboldt, Milan, Huntingdon, Camden, Brownsville, Alamo, Jackson, Henderson, Lexington, Parsons, Decaturville, Somerville, Oakland, Bolivar, Selmer, and Savannah 300 PM CDT Sun Oct 17 2021 ...FROST ADVISORY IN EFFECT FROM 4 AM TO 9 AM CDT MONDAY... * WHAT...Temperatures as low as 36 will result in frost formation. * WHERE...Portions of west Tennessee. * WHEN...From 4 AM to 9 AM CDT Monday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
1 follow-up statement
327 WWUS74 KMEG 180805 NPWMEG URGENT - WEATHER MESSAGE National Weather Service Memphis TN 305 AM CDT Mon Oct 18 2021 TNZ003-004-020>022-050>055-089>092-181400- /O.CON.KMEG.FR.Y.0004.211018T0900Z-211018T1400Z/ Weakley-Henry-Gibson-Carroll-Benton TN-Haywood-Crockett-Madison- Chester-Henderson-Decatur-Fayette-Hardeman-McNairy-Hardin- Including the cities of Martin, Dresden, Paris, Humboldt, Milan, Huntingdon, Camden, Brownsville, Alamo, Jackson, Henderson, Lexington, Parsons, Decaturville, Somerville, Oakland, Bolivar, Selmer, and Savannah 305 AM CDT Mon Oct 18 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING... * WHAT...Temperatures as low as 36 will result in frost formation. * WHERE...Portions of west Tennessee. * WHEN...From 4 AM to 9 AM CDT Monday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
Nearby
Frost Advisories in Tennessee, 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.