Alert archive / Kentucky / Severe Thunderstorm Warnings in 2008
Severe Thunderstorm Warning 138, NWS Louisville, KY
NWS Louisville, KY issued this severe thunderstorm warning at Jul 20, 2008, 6:48 PM EDT for Trimble County, Kentucky; Jefferson County, Indiana. It was in force for 42 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
- Jul 20, 2008, 6:48 PM EDT (22:48 UTC)
- Expired
- Jul 20, 2008, 7:30 PM EDT
- In force
- 42 min
- Issued by
- NWS Louisville, KY
- Area
- Storm-based polygon
Counties Jefferson County, IN, Trimble County, KY
The radar
The Louisville radar (KLVX), 94 km from the middle of the area, began a volume at 22:51 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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 20, 3:10 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Cncnati-Daytn, OH (KILN), launched 12:00Z, 10.8 hours before the alert went out and 159 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.
- Mixed-layer CAPE
- 525 J/kg
- Mixed-layer CIN
- -54 J/kg
- Mixed-layer LCL
- 1168 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 97 m²/s²
- 0-3 km storm-relative helicity
- 135 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 2.3
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 Jul 20, 6:10 PM EDT, 38 minutes earlier.
Area forecast discussion, Jul 20, 6:10 PM EDT, 38 minutes before
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</html>Hazardous weather outlook, Jul 20, 4:10 PM EDT, 2 hours 38 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LOUISVILLE KY 410 PM EDT SUN JUL 20 2008 INZ076>079-092-KYZ031>033-212015- ORANGE IN-WASHINGTON IN-SCOTT IN-JEFFERSON IN-CLARK IN-OLDHAM KY- TRIMBLE KY-HENRY KY- 410 PM EDT SUN JUL 20 2008 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL INDIANA AND NORTH CENTRAL KENTUCKY. .DAY ONE...TONIGHT. A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 9 PM EDT. ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED THROUGH THIS EVENING...WITH THE BEST CHANCE OF STORMS OVER EASTERN PARTS OF THE AREA. THE STRONGEST STORMS COULD PRODUCE WIND DAMAGE AND HAIL...ALONG WITH HEAVY RAIN AND CLOUD-TO-GROUND LIGHTNING. ANY STORMS SHOULD DISSIPATE BY LATE EVENING. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP MONDAY AFTERNOON AND CONTINUE THROUGH EARLY WEDNESDAY AS A COOL FRONT DROPS SOUTH THROUGH THE REGION. THE MOST WIDESPREAD STORMS ARE EXPECTED TUESDAY. SOME OF THESE STORMS WILL PRODUCE PERIODS OF HEAVY RAIN...DANGEROUS CLOUD-TO-GROUND LIGHTNING AND SMALL HAIL. A FEW STORMS COULD PRODUCE DAMAGING WINDS...ESPECIALLY MONDAY NIGHT AND TUESDAY. ADDITIONAL ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED THURSDAY NIGHT THROUGH SATURDAY. .SPOTTER INFORMATION STATEMENT... INZ083-084-089>091-KYZ023>030-034>043-045>049-053>057-061>067- 070>078-081-082-212015- DUBOIS IN-CRAWFORD IN-PERRY IN-HARRISON IN-FLOYD IN-HANCOCK KY- BRECKINRIDGE KY-MEADE KY-OHIO KY-GRAYSON KY-HARDIN KY-BULLITT KY- JEFFERSON KY-SHELBY KY-FRANKLIN KY-SCOTT KY-HARRISON KY- SPENCER KY-ANDERSON KY-WOODFORD KY-FAYETTE KY-BOURBON KY- NICHOLAS KY-NELSON KY-WASHINGTON KY-MERCER KY-JESSAMINE KY- CLARK KY-LARUE KY-MARION KY-BOYLE KY-GARRARD KY-MADISON KY- BUTLER KY-EDMONSON KY-HART KY-GREEN KY-TAYLOR KY-CASEY KY- LINCOLN KY-LOGAN KY-WARREN KY-SIMPSON KY-ALLEN KY-BARREN KY- MONROE KY-METCALFE KY-ADAIR KY-RUSSELL KY-CUMBERLAND KY- CLINTON KY- 410 PM EDT SUN JUL 20 2008 /310 PM CDT SUN JUL 20 2008/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL INDIANA AND CENTRAL KENTUCKY. .DAY ONE...TONIGHT. ISOLATED THUNDERSTORMS ARE EXPECTED OVER CENTRAL KENTUCKY THROUGH EARLY THIS EVENING...WITH THE BEST CHANCE OVER PARTS OF EAST- CENTRAL AND EASTERN SECTIONS OF SOUTH-CENTRAL KENTUCKY. THE STRONGEST STORMS COULD PRODUCE WIND GUSTS OF 30 TO 40 MPH ALONG WITH BRIEF HEAVY RAIN AND CLOUD-TO-GROUND LIGHTNING. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP MONDAY AFTERNOON AND CONTINUE THROUGH EARLY WEDNESDAY AS A COOL FRONT DROPS SOUTH THROUGH THE REGION. THE MOST WIDESPREAD STORMS ARE EXPECTED TUESDAY. SOME OF THESE STORMS WILL PRODUCE PERIODS OF HEAVY RAIN...DANGEROUS CLOUD-TO-GROUND LIGHTNING AND SMALL HAIL. A FEW STORMS COULD PRODUCE DAMAGING WINDS...ESPECIALLY MONDAY NIGHT AND TUESDAY. ADDITIONAL ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED THURSDAY NIGHT THROUGH SATURDAY. .SPOTTER INFORMATION STATEMENT... TWF/DK
In the hours before
Special weather statement, Jul 20, 2:40 PM EDT, 4 hours 8 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LOUISVILLE KY 240 PM EDT SUN JUL 20 2008 KYZ039-040-046-047-201945- ANDERSON-MERCER-WASHINGTON-WOODFORD- 240 PM EDT SUN JUL 20 2008 ...SCATTERED THUNDERSTORMS WITH HEAVY RAIN AND GUSTY WINDS... AT 233 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED SCATTERED STRONG THUNDERSTORMS FROM LAWRENCEBURG TO 10 MILES EAST OF BARDSTOWN...MOVING SOUTHEAST AT 25 MPH. THE STORMS WILL AFFECT PARTS OF WASHINGTON MERCER ANDERSON AND SOUTHERN WOODFORD COUNTIES THROUGH ABOUT 4 PM EDT. WITH THE STRONGEST STORMS...EXPECT FREQUENT DANGEROUS LIGHTNING... BRIEF VERY HEAVY RAINFALL...PEA SIZE HAIL...AND WIND GUSTS TO 40 MPH. IF YOU ARE IN THE PATH OF THESE STORMS...SEEK SHELTER INDOORS. TWF
Special weather statement, Jul 20, 3:41 PM EDT, 3 hours 7 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LOUISVILLE KY 341 PM EDT SUN JUL 20 2008 KYZ046>048-054>057-065>067-202015- BOYLE-CASEY-GARRARD-JESSAMINE-LINCOLN-MADISON-MARION-MERCER-TAYLOR- WASHINGTON- 344 PM EDT SUN JUL 20 2008 ...STRONG STORMS NEAR LANCASTER...RICHMOND...STANFORD... AT 344 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A CLUSTER OF STRONG THUNDERSTORMS NEAR LANCASTER AND MOVING SOUTHEAST AT 30 MPH. OCCASIONAL LIGHTNING...MODERATE RAIN WITH RAINFALL AMOUNTS OF AROUND ONE HALF INCH PER HOUR REDUCING VISIBILITIES TO LESS THAN THREE MILES...SMALL PEA OR MARBLE SIZE HAIL...AND GUSTY WINDS OF AROUND 35 TO 40 MPH... ARE EXPECTED WITH THIS STORM FROM LIBERTY TO CRAB ORCHARD TO THE BLUE GRASS ARMY DEPOT. ESR
The office that day
Everything else NWS Louisville, KY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 20, 7:31 PM EDT | Severe Thunderstorm Warning | LMK | Franklin, Henry, Shelby, Trimble | 44 min |
| Jul 20, 7:25 PM EDT | Severe Thunderstorm Warning | LMK | Scott, Washington | 35 min |
| Jul 20, 7:59 PM EDT | Severe Thunderstorm Warning | LMK | Washington | 46 min |
Nearby
Severe Thunderstorm Warnings in Kentucky, 2008Severe Thunderstorm Warnings in Indiana, 2008Every severe thunderstorm warning in 2008
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.