Alert archive / Kentucky / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 102, NWS Louisville, KY

August 19, 1999Marion County, Washington County, Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at Aug 19, 1999, 3:09 PM EDT for Marion County, Washington County, Kentucky. It was in force for 36 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 19, 1999, 3:09 PM EDT (19:09 UTC)
Expired
Aug 19, 1999, 3:45 PM EDT
In force
36 min
Issued by
NWS Louisville, KY
Area
Whole counties

Counties Marion County, KY, Washington County, KY

The radar

The Louisville radar (KLVX), 73 km from the middle of the area, began a volume at 19:08 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

Nashville Metro, TN (KBNA), launched 12:00Z, 7.2 hours before the alert went out and 209 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, Nashville Metro, TN at 12:00Z on 1999-08-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 272 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, Nashville Metro, TN at 12:00Z on 1999-08-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -2 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
272 J/kg
Mixed-layer CIN
-217 J/kg
Mixed-layer LCL
1698 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
-2 m²/s²
0-3 km storm-relative helicity
38 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

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 Louisville, KY wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 19, 4:25 AM EDT, 10 hours 44 minutes earlier.

Area forecast discussion, Aug 19, 4:25 AM EDT, 10 hours 44 minutes before
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In the hours before

Local storm report, Aug 19, 11:48 AM EDT, 3 hours 21 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LOUISVILLE KY
1148 AM EDT THU AUG 19 1999

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

1130 AM    SALEM                     IN    .75 INCH HAIL
08/19/99   WASHINGTON                      DIME TO QUARTER SIZE
                                           HAIL JUST SOUTH OF SALEM.
Local storm report, Aug 19, 11:48 AM EDT, 3 hours 21 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LOUISVILLE KY
1148 AM EDT THU AUG 19 1999

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

1130 AM    SALEM                     IN    .75 INCH HAIL
08/19/99   WASHINGTON                      DIME TO QUARTER SIZE
                                           HAIL JUST SOUTH OF SALEM.
Local storm report, Aug 19, 12:14 PM EDT, 2 hours 55 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LOUISVILLE KY
1214 PM EDT THU AUG 19 1999

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

1155 AM    PLEASURE RIDGE PARK       KY    WIND DAMAGE
08/19/99   JEFFERSON                       TREES AND POWER LINES
                                           DOWN.

1157 AM    LOUISVILLE ARPT           KY    56 MPH TSTM GUST
08/19/99   JEFFERSON                       MEASURED WIND GUST AT
                                           LOUISVILLE
                                           INTERNATIONAL AIRPORT.
Local storm report, Aug 19, 12:14 PM EDT, 2 hours 55 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LOUISVILLE KY
1214 PM EDT THU AUG 19 1999

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

1155 AM    PLEASURE RIDGE PARK       KY    WIND DAMAGE
08/19/99   JEFFERSON                       TREES AND POWER LINES
                                           DOWN.

1157 AM    LOUISVILLE ARPT           KY    56 MPH TSTM GUST
08/19/99   JEFFERSON                       MEASURED WIND GUST AT
                                           LOUISVILLE
                                           INTERNATIONAL AIRPORT.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 19, 11:43 AM EDTSevere Thunderstorm WarningLMKJefferson32 min
Aug 19, 11:52 AM EDTSevere Thunderstorm WarningLMKJefferson33 min
Aug 19, 12:33 PM EDTSevere Thunderstorm WarningLMKJefferson17 min
Aug 19, 3:39 PM EDTSevere Thunderstorm WarningLMKBoyle31 min
Aug 19, 4:01 PM EDTTornado WarningLMKLincoln29 min
Aug 19, 4:28 PM EDTSevere Thunderstorm WarningLMKGarrard, Lincoln32 min
Aug 19, 5:34 PM EDTSevere Thunderstorm WarningLMKTaylor31 min
Aug 19, 5:36 PM EDTSevere Thunderstorm WarningLMKFayette34 min
Aug 19, 5:44 PM EDTSevere Thunderstorm WarningLMKMarion16 min
Aug 19, 6:18 PM EDTSevere Thunderstorm WarningLMKTaylor17 min
Aug 19, 6:47 PM EDTSevere Thunderstorm WarningLMKCasey33 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 1999Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.