Alert archive / Kentucky / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 21, NWS Jackson, KY

May 18, 2004Powell County, Wolfe County, Kentucky

NWS Jackson, KY issued this severe thunderstorm warning at May 18, 2004, 7:23 PM EDT for Powell County, Wolfe County, Kentucky. It was in force for 67 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
May 18, 2004, 7:23 PM EDT (23:23 UTC)
Expired
May 18, 2004, 8:30 PM EDT
In force
67 min
Issued by
NWS Jackson, KY
Area
Counties, with a storm outline in the text

Counties Powell County, KY, Wolfe County, KY

The radar

The Jackson,KY radar (KJKL), 33 km from the middle of the area, began a volume at 23:27 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

Cncnati-Daytn, OH (KILN), launched 12:00Z, 11.4 hours before the alert went out and 184 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, Cncnati-Daytn, OH at 12:00Z on 2004-05-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1159 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, Cncnati-Daytn, OH at 12:00Z on 2004-05-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 117 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
1159 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
658 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
117 m²/s²
0-3 km storm-relative helicity
110 m²/s²
Significant tornado parameter
0.4
Supercell composite
2.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

423 
WUUS53 KJKL 182323
SVRJKL
KYC197-237-190030-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON KY
723 PM EDT TUE MAY 18 2004

THE NATIONAL WEATHER SERVICE IN JACKSON KY
HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  POWELL COUNTY IN KENTUCKY.
  WOLFE COUNTY IN KENTUCKY.

* UNTIL 830 PM EDT.

* AT 723 PM EDT...RADAR INDICATED A SEVERE THUNDERSTORM 3 MILES WEST
  OF TORRENT...OR 10 MILES WEST OF CAMPTON...MOVING EAST AT 15 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  ROGERS AROUND 730 PM EDT.
  PINE RIDGE AROUND 735 PM EDT.
  HIGH FALLS AROUND 740 PM EDT.
  CAMPTON AROUND 745 PM EDT.
  CALABOOSE AROUND 750 PM EDT.

THIS IS A DANGEROUS STORM. THIS SEVERE THUNDERSTORM IS CAPABLE OF 
PRODUCING WINDS UP TO 60 MPH AND HAIL UP TO THE SIZE OF NICKELS.

IF SEVERE WEATHER APPROACHES YOUR AREA GO INSIDE A STURDY SHELTER.

REPORT SEVERE WEATHER TO THE NEAREST LOCAL LAW ENFORCEMENT AGENCY.

LAT...LON 3780 8358 3786 8351 3777 8334 3771 8327
          3766 8361 3773 8372 3776 8383 3783 8387
          3787 8372

$$

GREIF

The office that day

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

IssuedProductOfficeCountiesLasted
May 18, 5:01 PM EDTSevere Thunderstorm WarningJKLRowan44 min
May 18, 6:15 PM EDTSevere Thunderstorm WarningJKLMorgan45 min
May 18, 6:36 PM EDTSevere Thunderstorm WarningJKLEstill39 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 2004Every severe thunderstorm warning in 2004

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.