Alert archive / Tennessee / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 409, NWS Memphis, TN

October 18, 20255 counties in Tennessee

NWS Memphis, TN issued this severe thunderstorm warning at Oct 18, 2025, 8:38 PM CDT for 5 counties in Tennessee. It was in force for 52 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Oct 18, 2025, 8:38 PM CDT (01:38 UTC)
Expired
Oct 18, 2025, 9:30 PM CDT
In force
52 min
Issued by
NWS Memphis, TN
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Crockett County, TN, Fayette County, TN, Hardeman County, TN, Haywood County, TN, Madison County, TN

The radar

The Memphis radar (KNQA), 69 km from the middle of the area, began a volume at 01:39 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Oct 18, 6:12 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 1.6 hours before the alert went out and 335 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-pSkew-T log-p diagram, Birmingham, AL at 00:00Z on 2025-10-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 00:00Z on 2025-10-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 84 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
1822 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
84 m²/s²
0-3 km storm-relative helicity
158 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 18, 8:31 PM CDTSpecial Weather StatementMEGFayette29 min
Oct 18, 9:12 PM CDTSevere Thunderstorm WarningMEGBenton, Carroll, Crockett, Gibson, Henderson, Henry and 2 more48 min
Oct 18, 9:30 PM CDTSpecial Weather StatementMEGLafayette, Union30 min
Oct 18, 9:56 PM CDTSpecial Weather StatementMEGTippah, Union34 min
Oct 18, 10:03 PM CDTAreal Flood AdvisoryMEGLafayette100 min
Oct 18, 10:25 PM CDTSpecial Weather StatementMEGCalhoun, Pontotoc35 min
Oct 18, 10:26 PM CDTSpecial Weather StatementMEGAlcorn34 min
Oct 18, 11:00 PM CDTSpecial Weather StatementMEGLee, Pontotoc30 min
Oct 18, 11:02 PM CDTSpecial Weather StatementMEGMonroe28 min
Oct 18, 7:21 PM CDTSpecial Weather StatementMEGCross24 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2025Every severe thunderstorm warning in 2025

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.