Alert archive / Kentucky / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 166, NWS Louisville, KY

August 17, 1997Nicholas County, Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at Aug 17, 1997, 3:21 PM EDT for Nicholas County, Kentucky. It was in force for 24 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
Aug 17, 1997, 3:21 PM EDT (19:21 UTC)
Expired
Aug 17, 1997, 3:45 PM EDT
In force
24 min
Issued by
NWS Louisville, KY
Area
Whole counties

County Nicholas County, KY

The radar

The Jackson,KY radar (KJKL), 103 km from the middle of the area, began a volume at 19:23 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
Aug 17, 2:15 PM EDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 7.4 hours before the alert went out and 123 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 1997-08-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 39 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 1997-08-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 51 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
39 J/kg
Mixed-layer CIN
-211 J/kg
Mixed-layer LCL
934 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
51 m²/s²
0-3 km storm-relative helicity
131 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSDF 171921 RRA
SVRSDF
KYC181-171945-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LOUISVILLE KY
321 PM EDT SUN AUG 17 1997

* SEVERE THUNDERSTORM WARNING FOR
  NICHOLAS COUNTY - EAST CENTRAL KENTUCKY

* UNTIL 345 PM EDT
 
* SOME LOCATIONS AFFECTED
  SPROUT BY 330 PM EDT
  MOOREFILED BY 325 PM EDT

* AT 320 PM EDT...DOPPLER RADAR INDICATED A SEVERE STORM 25 MILES
NORTHEAST OF LEXINGTON...JUST SOUTH OF CARLISLE. THE STORM IS MOVING
NORTHEAST AT 40 MPH.

IF YOU ARE OUTSIDE OR IN THE PATH OF THIS STORM...SEEK SHELTER INSIDE
A STRONG BUILDING. AVOID WINDOWS AND STAY OFF THE TELEPHONE UNTIL
THE STORM HAS PASSED.



DEWALD

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 17, 2:40 PM EDTSevere Thunderstorm WarningLMKFayette50 min
Aug 17, 6:25 PM EDTSevere Thunderstorm WarningLMKClark, Fayette35 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 1997Every severe thunderstorm warning in 1997

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.