Alert archive / Tennessee / Frost Advisories in 2022

Frost Advisory 3, NWS Nashville, TN

April 9, 202221 counties in Tennessee

NWS Nashville, TN issued this frost advisory at Apr 9, 2022, 2:09 PM CDT for 21 counties in Tennessee. It took effect at Apr 10, 2022, 1:00 AM CDT. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued: Apr 9, 2022, 2:09 PM CDT (19:09 UTC)
In effect from: Apr 10, 2022, 1:00 AM CDT
Expired: Apr 10, 2022, 8:00 AM CDT
In force: 7 hr
Issued by: NWS Nashville, TN

All 21 counties

Bedford County, TN, Cannon County, TN, Cheatham County, TN, Coffee County, TN, Davidson County, TN, Dickson County, TN, Giles County, TN, Grundy County, TN, Hickman County, TN, Lawrence County, TN, Lewis County, TN, Marshall County, TN, Maury County, TN, Montgomery County, TN, Robertson County, TN, Rutherford County, TN, Sumner County, TN, Van Buren County, TN, Warren County, TN, Williamson County, TN, Wilson County, TN

The radar

The Nashville radar (KOHX), 48 km from the middle of the area, began a volume at 19:13 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, 7.2 hours before the alert went out and 316 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: 2154 m above ground
0-6 km bulk shear: 82 kt
0-1 km storm-relative helicity: 77 m²/s²
0-3 km storm-relative helicity: 259 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 Nashville, TN wrote its last area forecast discussion before this frost advisory went out at Apr 8, 6:54 PM CDT, 19 hours 15 minutes earlier.

Area forecast discussion, Apr 8, 6:54 PM CDT, 19 hours 15 minutes before

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The office that day

Everything else NWS Nashville, TN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 9, 2:09 PM CDT	Freeze Warning	OHX	Clay, Cumberland, DeKalb, Fentress, Jackson, Macon and 6 more	18 hr

Nearby

Frost Advisories in Tennessee, 2022 Every 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.