Alert archive / Kentucky / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 237, NWS Jackson, KY

July 9, 2025Floyd County, Knott County, Kentucky

NWS Jackson, KY issued this severe thunderstorm warning at Jul 9, 2025, 4:26 PM EDT for Floyd County, Knott County, Kentucky. It was in force for 34 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
Jul 9, 2025, 4:26 PM EDT (20:26 UTC)
Expired
Jul 9, 2025, 5:00 PM EDT
In force
34 min
Issued by
NWS Jackson, KY
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Floyd County, KY, Knott County, KY

The radar

The Jackson,KY radar (KJKL), 44 km from the middle of the area, began a volume at 20:26 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

Roanoke, VA (KRNK), launched 12:00Z, 8.4 hours before the alert went out and 298 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, Roanoke, VA at 12:00Z on 2025-07-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 677 joules per kilogram.LCLLFCEL10008507005003002001001 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, Roanoke, VA at 12:00Z on 2025-07-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 17 square meters per square second.1939Sfc1 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
677 J/kg
Mixed-layer CIN
-59 J/kg
Mixed-layer LCL
891 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
17 m²/s²
0-3 km storm-relative helicity
57 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The office that day

Everything else NWS Jackson, KY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 9, 10:39 AM EDTAreal Flood AdvisoryJKLMontgomery2 hr
Jul 9, 11:14 AM EDTSpecial Weather StatementJKLElliott, Magoffin31 min
Jul 9, 11:47 AM EDTSpecial Weather StatementJKLJohnson, Magoffin28 min
Jul 9, 12:17 PM EDTAreal Flood AdvisoryJKLJohnson, Magoffin, Morgan118 min
Jul 9, 12:33 PM EDTSpecial Weather StatementJKLLetcher27 min
Jul 9, 12:53 PM EDTSpecial Weather StatementJKLLetcher37 min
Jul 9, 1:01 PM EDTSevere Thunderstorm WarningJKLLetcher, Pike29 min
Jul 9, 1:32 PM EDTAreal Flood AdvisoryJKLLetcher, Pike3 hr
Jul 9, 1:36 PM EDTAreal Flood AdvisoryJKLPike3 hr
Jul 9, 1:43 PM EDTFlash Flood WarningJKLPike3 hr
Jul 9, 1:53 PM EDTSpecial Weather StatementJKLPike37 min
Jul 9, 4:13 PM EDTSpecial Weather StatementJKLKnott47 min
Jul 9, 4:52 PM EDTSpecial Weather StatementJKLKnott, Pike53 min
Jul 9, 4:56 PM EDTSevere Thunderstorm WarningJKLFloyd, Knott, Letcher, Pike34 min
Jul 9, 5:19 PM EDTAreal Flood AdvisoryJKLLetcher116 min
Jul 9, 5:37 PM EDTAreal Flood AdvisoryJKLFloyd, Knott, Letcher, Pike3 hr
Jul 9, 7:15 PM EDTAreal Flood AdvisoryJKLElliott, Rowan3 hr
Jul 9, 7:32 PM EDTSpecial Weather StatementJKLFleming, Rowan28 min
Jul 9, 7:34 PM EDTSpecial Weather StatementJKLElliott26 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 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.