Alert archive / Kentucky / Severe Thunderstorm Warnings in 2015
Severe Thunderstorm Warning 351, NWS Louisville, KY
NWS Louisville, KY issued this severe thunderstorm warning at Sep 1, 2015, 8:01 PM EDT for Jefferson County, Oldham County, Kentucky; Clark County, Indiana. It was in force for 29 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
- Sep 1, 2015, 8:01 PM EDT (00:01 UTC)
- Expired
- Sep 1, 2015, 8:30 PM EDT
- In force
- 29 min
- Issued by
- NWS Louisville, KY
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Clark County, IN, Jefferson County, KY, Oldham County, KY
The radar
The Louisville radar (KLVX), 52 km from the middle of the area, began a volume at 00:01 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
Lincoln, IL (KILX), launched 00:00Z, 0.0 hours before the alert went out and 326 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
- 1021 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 1858 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- -3 m²/s²
- 0-3 km storm-relative helicity
- 11 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Sep 1, 6:39 PM EDT, 1 hour 22 minutes earlier.
Area forecast discussion, Sep 1, 6:39 PM EDT, 1 hour 22 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LOUISVILLE KY 639 PM EDT TUE SEP 1 2015 ...UPDATED AVIATION DISCUSSION... ...FORECAST UPDATE... ISSUED AT 535 PM EDT TUE SEP 1 2015 QUICK UPDATE TO ACCOUNT FOR THE SHOWERS THAT HAVE DEVELOPED OVER BOWLING GREEN, PLUS THE SMALL CHANCE OF AN ISOLATED SHOWER EASTWARD THROUGH THE GLASGOW AREA AND UP TO AROUND CAMPBELLSVILLE OVER THE NEXT COUPLE OF HOURS. RADAR SHOWING SOME SMALL AREAS OF INCREASED REFLECTIVITIES ALOFT IN THAT REGION. .SHORT TERM (NOW THROUGH WEDNESDAY NIGHT)... ISSUED AT 312 PM EDT TUE SEP 1 2015 OVERALL PATTERN FEATURES AN UPPER RIDGE CENTERED OVER THE SE CONUS, MEANWHILE A WEAK UPPER LOW IS SPINNING OVER CENTRAL INDIANA. THIS FEATURE WILL GRADUALLY ROUND THE APEX OF THE RIDGE, SLIDING JUST NORTHEAST AND THEN EAST OF THE CWA THROUGH THE SHORT TERM. VERY ISOLATED SHOWERS AND STORMS HAVE DEVELOPED OVER SOUTHERN INDIANA THIS AFTERNOON. MOST SPOTS WILL STAY DRY, HOWEVER VERY LOCALIZED SPOTS COULD SEE BRIEF HEAVY RAINFALL, CLOUD TO GROUND LIGHTNING AND GUSTY WINDS UP TO 40 MPH. UPPER FEATURE WILL GRADUALLY SLIDE EAST OVERNGHT AND THEN SOUTHEAST TOWARD DAWN. WILL GO DRY THROUGH THE OVERNIGHT WITH THE LOSS OF DAYTIME HEATING/INSTABILITY HOWEVER WILL BEGIN TO REINTRODUCE SLIGHT CHANCE POPS ACROSS OUR FAR NE DURING THE AFTERNOON HOURS ON WEDNESDAY, LINGERING INTO WEDNESDAY NIGHT AS THE UPPER LOW BEGINS TO PUSH EAST OF THE AREA. FOR TONIGHT, AM A BIT CONCERNED ABOUT THE POTENTIAL FOR SOME PATCHY DENSE FOG, ESPECIALLY IN THE RIVER VALLEYS. OVERALL CONDITIONS WILL BE FAVORABLE FOR RADIATIONAL COOLING. THINK THE MOST LIKELY AREAS WILL BE WEST OF I-65 AND ACROSS SOUTHERN KY. OUR NE SHOULD SEE A BIT MORE CLOUD COVER INFLUENCE FROM NEAR THE UPPER LOW SO MORE OPTIMISIC THAT DENSE FOG WILL NOT FORM THERE. WILL MENTION IN THE ZONES AND IN THE HWO, BUT WILL HOLD OFF ANY ANY ADDITIONAL HEADLINES AT THIS TIME. MOST LOWS WILL BE IN THE MID AND UPPER 60S TONIGHT WITH A FEW LOCATIONS STAYING AROUND 70. WEDNESDAY HIGHS SHOULD BE A DEGREE OR TWO WARMER THAN TODAY, SO WILL GO WITH AND 88 TO 93 RANGE. AREAS WEST HAVE THE BEST SHOT AT THE 92S AND 93S. WEDNESDAY NIGHT LOWS WILL BE SLIGHTLY MILDER IN THE 68 TO 73 RANGE. .LONG TERM (THURSDAY THROUGH TUESDAY)... ISSUED AT 305 PM EDT TUE SEP 1 2015 ONLY SUBTLE CHANGES IN THE LONG TERM WITH MOSTLY A PERSISTENT FORECAST DAY TO DAY. RIDGING ALOFT IS THE REASON FOR THIS PERSISTENCE...HOWEVER LATEST GFS/EURO NOW HINTING AT A WEAK INVERTED TROUGH MEANDERING ACROSS THE REGION AT VARIOUS TIMES. THIS BOUNDARY MAY BE ENOUGH TO FOCUS ISOLATED DIURNAL CONVECTION. COVERAGE WILL BE LIMITED BY PRECIPITABLE WATERS ONLY IN THE 1.3-1.5 INCH RANGE. SUPERBLEND CAME UP WITH A COUPLE OF PERIODS IN THE SCATTERED RANGE...BUT IN KEEPING WITH A PERSISTENCE FORECAST AND THAT DRY AIR IN PLACE DECIDED TO LIMIT TO ISOLATED COVERAGE. OTHERWISE OUR TEMPERATURE FORECAST REMAINS A LITTLE ABOVE NORMAL EACH DAY. BACKED OFF FOR DAY 7 CLOSER TO NORMAL...AS THICKNESSES ARE FORECAST TO COME DOWN SOME. && .AVIATION (00Z TAF UPDATE)... ISSUED AT 639 PM EDT TUE SEP 1 2015 WITH LITTLE CHANGE IN THE OVERALL METEOROLOGICAL SET-UP, WILL GO WITH A LARGELY PERSISTENCE FORECAST FOR THIS TAF PACKAGE. SO...WILL HAVE TO CONTEND WITH THE POSSIBILITY OF MORNING FOG ONCE AGAIN, ESPECIALLY AT BWG. LEX AND EVEN SDF MAY BRIEFLY DROP BELOW 7SM AROUND DAWN (BR AT LEX, URBAN HZ AT SDF). OUTSIDE OF THAT, THIS TAF PERIOD SHOULD BE LARGELY FREE OF PROBLEMS FOR AVIATORS. && .LMK WATCHES/WARNINGS/ADVISORIES... KY...NONE. IN...NONE. && UPDATE.........13 SHORT TERM.....BJS LONG TERM......RJS AVIATION.......13
Hazardous weather outlook, Sep 1, 3:32 PM EDT, 4 hours 29 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LOUISVILLE KY 332 PM EDT TUE SEP 1 2015 INZ076>079-083-084-089>092-KYZ023>043-045>049-053>057-061>067- 070>078-081-082-021945- ORANGE-WASHINGTON-SCOTT-JEFFERSON-DUBOIS-CRAWFORD-PERRY-HARRISON- FLOYD-CLARK-HANCOCK-BRECKINRIDGE-MEADE-OHIO-GRAYSON-HARDIN-BULLITT- OLDHAM-TRIMBLE-HENRY-SHELBY-FRANKLIN-SPENCER-ANDERSON-WOODFORD- FAYETTE-BOURBON-NICHOLAS-NELSON-MERCER-JESSAMINE-LARUE-MARION-BOYLE- GARRARD-MADISON-BUTLER-EDMONSON-HART-GREEN-TAYLOR-CASEY-LINCOLN- LOGAN-WARREN-SIMPSON-ALLEN-BARREN-MONROE-METCALFE-ADAIR-RUSSELL- CUMBERLAND-CLINTON- INCLUDING THE CITIES OF...PAOLI...ORLEANS...FRENCH LICK...SALEM... SCOTTSBURG...AUSTIN...MADISON...JASPER...HUNTINGBURG...BROWNSTOWN... MILLTOWN...MARENGO...TELL CITY...CORYDON...NEW ALBANY... JEFFERSONVILLE...CLARKSVILLE...LEWISPORT...HAWESVILLE... HARDINSBURG...IRVINGTON...CLOVERPORT...BRANDENBURG...MULDRAUGH... BEAVER DAM...HARTFORD...LEITCHFIELD...ELIZABETHTOWN...RADCLIFF... FORT KNOX...MOUNT WASHINGTON...SHEPHERDSVILLE...HILLVIEW...BROOKS... LOUISVILLE...LA GRANGE...BUCKNER...CRESTWOOD...PEWEE VALLEY... BEDFORD...MILTON...EMINENCE...NEW CASTLE...PLEASUREVILLE... CAMPBELLSBURG...SHELBYVILLE...FRANKFORT...GEORGETOWN...CYNTHIANA... TAYLORSVILLE...LAWRENCEBURG...VERSAILLES...LEXINGTON...PARIS... CARLISLE...BARDSTOWN...SPRINGFIELD...HARRODSBURG...NICHOLASVILLE... WILMORE...WINCHESTER...HODGENVILLE...LEBANON...DANVILLE... LANCASTER...RICHMOND...BEREA...MORGANTOWN...BROWNSVILLE... HORSE CAVE...MUNFORDVILLE...GREENSBURG...CAMPBELLSVILLE...LIBERTY... STANFORD...RUSSELLVILLE...BOWLING GREEN...FRANKLIN...PROVIDENCE... SCOTTSVILLE...GLASGOW...TOMPKINSVILLE...EDMONTON...COLUMBIA... RUSSELL SPRINGS...JAMESTOWN...BURKESVILLE...ALBANY 332 PM EDT TUE SEP 1 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL INDIANA AND CENTRAL KENTUCKY. .DAY ONE...NOW THROUGH TONIGHT. ISOLATED THUNDERSTORMS WILL CONTINUE ACROSS SOUTHERN INDIANA INTO THIS EVENING. ANY STORM THAT DOES DEVELOP COULD CONTAIN GUSTY WINDS UP TO 40 MPH...BRIEF HEAVY RAINFALL AND CLOUD TO GROUND LIGHTNING. PATCHY DENSE FOG MAY DEVELOP TOWARD DAWN...ESPECIALLY IN RIVER VALLEY LOCATIONS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. ISOLATED AFTERNOON THUNDERSTORMS ARE FORECAST EACH DAY. ANY STORM THAT DOES FORM WILL CONTAIN GUSTY WINDS...LIGHTNING AND BRIEF HEAVY RAINFALL. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT NEEDED. && MORE INFORMATION...ALONG WITH OTHER WEATHER...HYDROLOGICAL AND CLIMATE INFORMATION CAN BE FOUND...AT WEATHER.GOV/LOUISVILLE. BJS/RJS
In the hours before
Special weather statement, Sep 1, 7:41 PM EDT, 20 minutes before
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</html>The office that day
Everything else NWS Louisville, KY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 1, 8:12 PM EDT | Areal Flood Advisory | LMK | Jefferson | 2 hr |
Nearby
Severe Thunderstorm Warnings in Kentucky, 2015Severe Thunderstorm Warnings in Indiana, 2015Every severe thunderstorm warning in 2015
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.