Alert archive / Kentucky / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 20, NWS Jackson, KY

April 8, 1999Martin County, Pike County, Kentucky

NWS Jackson, KY issued this severe thunderstorm warning at Apr 8, 1999, 4:23 PM EDT for Martin County, Pike County, Kentucky. It was in force for 47 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Apr 8, 1999, 4:23 PM EDT (20:23 UTC)
Expired: Apr 8, 1999, 5:10 PM EDT
In force: 47 min
Issued by: NWS Jackson, KY
Area: Whole counties

Counties Martin County, KY, Pike County, KY

The radar

The Jackson,KY radar (KJKL), 76 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.

What was reported inside it

Time	Report	Where	Remark
Apr 8, 5:00 PM EDT	Thunderstorm Wind	Sidney, KY	Damage to several homes and businesses. Pea sized hail covered the ground up to 3 inches deep.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 8.4 hours before the alert went out and 231 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1825 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 127 m²/s²
0-3 km storm-relative helicity: 193 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Jackson, KY wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 8, 2:30 PM EDT, 1 hour 53 minutes earlier.

Area forecast discussion, Apr 8, 2:30 PM EDT, 1 hour 53 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSON KY
230 PM EDT THU APR 8 1999

WARM FRONT SURGING NORTH ACROSS KENTUCKY AT THIS TIME HAS BEEN THE
FOCUS FOR SHOWERS AND THUNDERSTORMS. EXPECT MOST THE ACTIVITY TO
CONTINUE TO SHIFT NORTHWARD ALONG THE FRONT THIS EVENING. INCREASING
UPPER LEVEL DIFFLUENCE MAY KICK OFF A FEW MORE SHOWERS AND STORMS
ACROSS THE SOUTHERN TIER BUT THE ACTIVITY IS EXPECTED TO BE MORE
SCATTERED.

THETA-E RIDGE WILL CONTINUE TO BUILD NORTH INTO EASTERN KENTUCKY
TONIGHT...ONLY TO BE SWEPT OUT BY THE COLD FRONT AROUND MIDDAY ON
FRIDAY. ETA MODEL SHOWS AIRMASS WILL RAPIDLY DESTABILIZE AHEAD OF THE
FRONT OVER EASTERN KENTUCKY...AND WHILE THE NGM IS NOT QUITE AS
UNSTABLE...WE WILL GO WITH THE IDEA OF MORE SCATTERED THUNDERSTORMS
DEVELOPING AHEAD OF THE FRONT.

COOLER AND DRIER AIR NEVER MAKES IT TOO FAR SOUTH OF OUR CWA FRIDAY
NIGHT BEFORE UNSTABLE AIR RESURGES NORTH AGAIN ON SATURDAY. WILL
INCLUDE CHANCEz POPS FOR SAT...HIGHER THAN FWC.

OVERALL FWC TEMPS LOOK GOOD AND WILL NOT STRAY TOO FAR.

.JKL...NONE.

RAB

In the hours before

Local storm report, Apr 8, 2:53 PM EDT, 1 hour 30 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON KY
253 PM EDT THU APR 08 1999

TIME(EDT)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0245 PM    ISLAND CITY               KY    1 INCH HAIL
04/08/99   OWSLEY

Local storm report, Apr 8, 2:53 PM EDT, 1 hour 30 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON KY
253 PM EDT THU APR 08 1999

TIME(EDT)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0245 PM    ISLAND CITY               KY    1 INCH HAIL
04/08/99   OWSLEY

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 8, 12:43 PM EDT	Severe Thunderstorm Warning	JKL	Pulaski	62 min
Apr 8, 2:46 PM EDT	Severe Thunderstorm Warning	JKL	Breathitt, Owsley	44 min
Apr 8, 3:35 PM EDT	Severe Thunderstorm Warning	JKL	Wolfe	45 min
Apr 8, 3:39 PM EDT	Severe Thunderstorm Warning	JKL	Powell	36 min
Apr 8, 3:45 PM EDT	Severe Thunderstorm Warning	JKL	Menifee	50 min
Apr 8, 4:03 PM EDT	Severe Thunderstorm Warning	JKL	Floyd, Johnson	47 min
Apr 8, 4:10 PM EDT	Severe Thunderstorm Warning	JKL	Morgan	45 min
Apr 8, 4:39 PM EDT	Tornado Warning	JKL	Pike	46 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 1999 Every severe thunderstorm warning in 1999

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.