Alert archive / Kentucky / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 225, NWS Louisville, KY

August 27, 2002Marion County, Taylor County, Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at Aug 27, 2002, 7:20 PM EDT for Marion County, Taylor County, Kentucky. It was in force for 25 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: Aug 27, 2002, 7:20 PM EDT (23:20 UTC)
Expired: Aug 27, 2002, 7:45 PM EDT
In force: 25 min
Issued by: NWS Louisville, KY
Area: Counties, with a storm outline in the text

Counties Marion County, KY, Taylor County, KY

The radar

The Louisville radar (KLVX), 81 km from the middle of the area, began a volume at 23:23 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.

What was reported inside it

Time	Report	Where	Remark
Aug 27, 7:30 PM EDT	Thunderstorm Wind 50 E	New Market, KY	A tree was blown down across Highway 289 at New Market. Numerous large limbs were blown down.

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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 11.3 hours before the alert went out and 188 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: 401 J/kg
Mixed-layer CIN: -41 J/kg
Mixed-layer LCL: 804 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 19 m²/s²
0-3 km storm-relative helicity: 26 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 Louisville, KY wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 27, 1:32 PM EDT, 5 hours 48 minutes earlier.

Area forecast discussion, Aug 27, 1:32 PM EDT, 5 hours 48 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LOUISVILLE KY
ISSUED BY NWS PADUCAH KY
132 PM EDT TUE AUG 27 2002

PROVIDING SERVICE BACKUP FOR WFO LMK. LITTLE CHANGE NEEDED TO GOING
ZONE FORECAST. DAILY CHANCE OF SHOWERS AND THUNDERSTORMS WILL CONTINUE
AS AN UPPER LOW...CURRENTLY POSITIONED OVER SCNTRL KY/NCNTRL TN MOVES
LITTLE THROUGH FRIDAY. IF ANYTHING...IT MIGRATES A BIT TO THE WEST
THROUGH THE END OF THE WEEK BEFORE DAMPENING. DECENT MOISTURE PROGGED
TO REMAIN ON THE EAST SIDE OF THE UPPER LOW...WITH IMPULSES ROTATING
AROUND IT...THUS THE DAILY CHANCE OF CONVECTION. MOST OF THE ACTION
SHOULD BE IN THE AFTERNOON AND EVENING...BUT RECENT TRENDS HAVE SHOWN
SOME ACTIVITY EVEN LINGERS THROUGH THE NIGHT...SO WILL KEEP NIGHTTIME
LOW POPS GOING.

LITTLE VARIANCE IN DAILY MAX/MIN TEMPS IS EXPECTED. THIS IS WHAT
WAS PRESENTED IN THE ZONES. ONLY SLIGHT CHANGE WAS TO LOWER THE HIGH
TEMPERATURE FORECAST A CATEGORY FOR EASTERN SECTIONS OF THE CWFA FOR
WEDNESDAY AND THURSDAY.

MRF SUGGESTS A CHANCE OF CONVECTION RIGHT UP THROUGH LABOR DAY AND
EVEN TUESDAY. CURRENT ZFP DOES NOT HAVE ANYTHING IN STARTING SUNDAY.
ADDED A CHANCE TO THE SUNDAY FORECAST...BUT HAVE HELD OFF ON ADDING
TO EITHER LABOR DAY OR TUESDAY...WAITING FOR MORE RUN TO RUN
CONSISTENCY IN THE EXTENDED GUIDANCE. LATER SHIFTS MAY NEED TO TAKE
A LOOK.

IN TERMS OF GUIDANCE TEMPS...A BLEND OF THE MOS NUMBERS AND PREVIOUS
CCF/ZFP NUMBERS WERE USED....WITH THE NET RESULT BEING LITTLE CHANGE
TO THE GOING FORECAST.

.SDF...NONE.

In the hours before

Local storm report, Aug 27, 6:35 PM EDT, 45 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LOUISVILLE, KY
635 PM EDT TUE AUG 27 2002

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

0620 PM    MILLTOWN                  KY   .75 INCH HAIL
08/27/02   ADAIR                          REPORTED BY A STROM
                                          SPOTTER.

VB

Nearby

Severe Thunderstorm Warnings in Kentucky, 2002 Every severe thunderstorm warning in 2002

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.