Alert archive / Tennessee / Frost Advisories in 2020
Frost Advisory 4, NWS Huntsville, AL
NWS Huntsville, AL issued this frost advisory at May 8, 2020, 1:57 PM CDT for Franklin County, Lincoln County, Moore County, Tennessee. It took effect at May 9, 2020, 1:00 AM CDT. It was in force for 7 hr.
The area
The counties it named.
The facts
- Issued
- May 8, 2020, 1:57 PM CDT (18:57 UTC)
- In effect from
- May 9, 2020, 1:00 AM CDT
- Expired
- May 9, 2020, 8:00 AM CDT
- In force
- 7 hr
- Issued by
- NWS Huntsville, AL
Counties Franklin County, TN, Lincoln County, TN, Moore County, TN
The radar
The Northeast Alabama radar (KHTX), 38 km from the middle of the area, began a volume at 18:57 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
Nashville Metro, TN (KBNA), launched 12:00Z, 7.0 hours before the alert went out and 107 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
- 1199 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 130 m²/s²
- 0-3 km storm-relative helicity
- 237 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Huntsville, AL wrote its last area forecast discussion before this frost advisory went out at May 8, 11:46 AM CDT, 2 hours 11 minutes earlier.
Area forecast discussion, May 8, 11:46 AM CDT, 2 hours 11 minutes before
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</html>Hazardous weather outlook, May 8, 5:02 AM CDT, 8 hours 55 minutes before
Hazardous Weather Outlook National Weather Service Huntsville AL 502 AM CDT Fri May 8 2020 ALZ001>010-016-TNZ076-096-097-091015- Lauderdale-Colbert-Franklin AL-Lawrence-Limestone-Madison-Morgan- Marshall-Jackson-DeKalb-Cullman-Moore-Lincoln-Franklin TN- 502 AM CDT Fri May 8 2020 This Hazardous Weather Outlook is for north Alabama and portions of southern middle Tennessee. .DAY ONE...Today and Tonight... An area of showers with embedded isolated thunderstorms will cross the Tennessee Valley today. Gusty winds may accompany any stronger thunderstorm activity, but severe weather is not anticipated. A cold air mass will move into the region tonight, with freezing temperatures possible mainly in southern Middle Tennessee. A Freeze Watch has been issued for Lincoln, Moore and Franklin Counties in Tennessee for tonight into Saturday morning. .DAYS TWO THROUGH SEVEN...Saturday through Thursday... No hazardous weather is expected at this time. .SPOTTER CALL TO ACTION STATEMENT... Activation of storm spotters and emergency management personnel is not anticipated at this time. KDW
In the hours before
Local storm report, May 8, 9:03 AM CDT, 4 hours 54 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
903 AM CDT FRI MAY 8 2020
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0950 PM TORNADO 3 S WINCHESTER 35.14N 86.11W
05/04/2020 FRANKLIN TN NWS STORM SURVEY
AN EF-0 TORNADO WITH PEAK WIND OF 75 MPH,
PATH LENGTH OF 1.05 MILES, AND PATH WIDTH OF
100 YARDS.
&&The office that day
Everything else NWS Huntsville, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 8, 9:41 AM CDT | Wind Advisory | HUN | Colbert, Cullman, DeKalb, Franklin, Jackson, Lauderdale and 5 more | 7 hr |
| May 8, 3:37 AM CDT | Freeze Watch | HUN | Franklin, Lincoln, Moore | 10 hr |
Nearby
Frost Advisories in Tennessee, 2020Every frost advisory in 2020
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.