Alert archive / Kentucky / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 137, NWS Louisville, KY

July 12, 2008Anderson County, Mercer County, Woodford County, Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at Jul 12, 2008, 12:34 PM EDT for Anderson County, Mercer County, Woodford County, Kentucky. It was in force for 26 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 12, 2008, 12:34 PM EDT (16:34 UTC)
Expired
Jul 12, 2008, 1:00 PM EDT
In force
26 min
Issued by
NWS Louisville, KY
Area
Storm-based polygon

Counties Anderson County, KY, Mercer County, KY, Woodford County, KY

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 4.6 hours before the alert went out and 189 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, Cncnati-Daytn, OH at 12:00Z on 2008-07-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 92 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, Cncnati-Daytn, OH at 12:00Z on 2008-07-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 23 square meters per square second.1939Sfc1 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
92 J/kg
Mixed-layer CIN
-176 J/kg
Mixed-layer LCL
1640 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
23 m²/s²
0-3 km storm-relative helicity
4 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 Jul 12, 10:23 AM EDT, 2 hours 11 minutes earlier.

Area forecast discussion, Jul 12, 10:23 AM EDT, 2 hours 11 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LOUISVILLE KY
1023 AM EDT SAT JUL 12 2008

.UPDATE...
A BAND OF THUNDERSTORMS HAS DEVELOPED THIS MORNING ACROSS CENTRAL
KENTUCKY WITH THE LATEST POSITION FROM NEAR SHELBYVILLE SOUTH TO
NEAR CAMPBELLSVILLE THEN INTO TENNESSEE. THESE THUNDERSTORMS WERE
ALONG A MID LEVEL SHORTWAVE THAT WAS MOVING ACROSS THE AREA. THIS
AREA ALSO MARKED AN INCREASE IN INSTABILITY WITH THE MOST UNSTABLE
AIR TO THE WEST. LOOKS LIKE SEVERAL WEAK IMPULSES WILL BE CROSSING
OUR AREA THROUGH THIS EVENING. THEREFORE HAVE UPDATED GRIDS AND ZONE
FORECASTS TO REFLECT THIS INCREASED RISK OF SCATTERED THUNDERSTORMS
TODAY.

&&

.SHORT TERM (TODAY AND TONIGHT)...

CONVECTION ASSOCIATED WITH A COLD FRONT STRETCHING FROM NW
WISCONSIN TO NE NEW MEXICO WILL BE THE MAIN WEATHER MAKER FOR THE
SHORT TERM PERIOD. EXPECT A PREFRONTAL TROUGH TO SWING THROUGH THE
AREA THIS AFTERNOON SPARKING SCATTERED T-STORMS. ELEVATED CAPE OF
1200 TO 1500 J/KG...DRY AIR ALOFT AND NEAR THE SURFACE WILL SUPPORT
GUSTY WINDS AND SMALL HAIL IN THE STRONGEST OF THESE STORMS. THERE
COULD BE SOME MARGINALLY SEVERE STORMS ESPECIALLY OVER SOUTHERN
INDIANA AND WEST CENTRAL KENTUCKY...BUT BELIEVE MOST STORMS WILL
STAY UNDER SEVERE LIMITS.

THERE SHOULD BE A BRIEF DECLINE IN PRECIP BETWEEN 0Z AND 4Z.
HOWEVER...AS THE FRONT NEARS SOUTHERN INDIANA BY 6Z...EXPECT
CONVECTION TO PICK UP WITH LIKELY SHOWERS AND T-STORMS. AGAIN
THERE COULD BE SOME MARGINALLY SEVERE STORMS WILL FORCING ALONG
THE FRONT...HOWEVER MOST STORMS WILL STAY UNDER SEVERE LIMITS. ANY
STORMS THAT OCCUR THIS AFTERNOON OR TONIGHT WILL HAVE THE
POTENTIAL FOR HEAVY RAINFALL WITH PWATS NEAR 2 INCHES.

HIGHS TODAY WILL BE QUITE WARM AHEAD OF THE FRONT IN THE UPPER 80S
AND LOW 90S. LOWS TONIGHT WILL BE IN THE UPPER 60S AND LOW 70S.

.LONG TERM (SUNDAY THROUGH FRIDAY)...

SUNDAY AND SUNDAY NIGHT...

A COOL FRONT WILL BE LOCATED JUST SOUTH OF THE OHIO RIVER AT THE
BEGINNING OF THIS FORECAST PERIOD. WITH PRECIPITABLE WATER VALUES
ABOVE 2 INCHES HEAVY RAIN IS EXPECTED ALONG AND SOUTH OF THE FRONTAL
BOUNDARY. FOR THIS REASON WE WILL HOLD POPS IN THE LIKELY CATEGORY
SOUTH OF THIS BOUNDARY THROUGH THE DAY. NORTH OF THE FRONT WE WILL
GRADUALLY DROP POPS. THE FRONT SHOULD BE OUT OF THE REGION BY
EVENING SO WE WILL NOT MENTION POPS AFTER 00Z MONDAY. WE WILL HOLD
TEMPERATURES IN THE MID 80S WITH THE EXPECTED RAIN AND CLOUD COVER.

CLOUDS WILL CLEAR SUNDAY NIGHT AND WITH THE DRIER AIR BEGINNING TO
FILTER INTO THE REGION TEMPERATURES AT DAYBREAK MONDAY WILL FALL
INTO THE LOWER 60S.

MONDAY THRU FRIDAY...

A DRY PERIOD WITH INCREASING HEAT AND HUMIDITY.

SWRN U.S. RIDGE EXPANDS INTO THE OHIO VALLEY BY WED AND REMAINS
STRONG THRU THE END OF THE PERIOD. ASSOCIATED SFC HI PRES RIDGE
EXTENDING FROM NEW ENGLAND SWWD INTO THE OH/MID MS VLYS MOVES LITTLE
WITH THE CENTER GRADUALLY SETTLING ACRS THE APPALACHIANS. THIS WILL
RESULT IN A GRADUAL HEAT-UP THRU THE PERIOD AS WINDS BECOME MORE
SOUTHERLY WITH MAX TEMPS CLIMBING TO ABOVE MID JULY NORMS BY WED.
DEWPOINTS SHUD CLIMB TOO...WELL INTO THE 60S BY THU AND FRI.

&&

.AVIATION (12Z TAFS)...

VFR CONDITIONS EXPECTED THROUGH THE NEXT 6 HRS AT LEAST.  THEN TAFS
COULD GET TRICKY THIS AFTERNOON AS SCATTERED PREFRONTAL CONVECTION
FIRES THIS AFTERNOON ACROSS THE REGION.  BECAUSE OF THE SCATTERED
COVERAGE EXPECTED WILL GO WITH VCTS AND NO VSBY RESTRICTIONS FOR
NOW...HOWEVER BRIEF MVFR CONDITIONS MAY BE REALIZED IN AFTERNOON
T-STORMS.  CONVECTION DECREASES SOMEWHAT NEAR SUNSET AS DIURNAL
INSTABILITY WANES...HOWEVER THE COLD FRONT APPROACHING FROM THE NW
WILL ENTER THE TAF SITES AFTER 6Z TONIGHT INTO SUN.  WILL GO AHEAD
AND MENTION TSRA WITH HIGH END MVFR VSBYS AT THIS POINT...AND LET
FUTURE TAF ISSUANCES TREND DOWNWARD WITH FLIGHT CONDITIONS AS THEY
SEE FIT.

&&

.LMK WATCHES/WARNINGS/ADVISORIES...
KY...NONE.
IN...NONE.
&&

UPDATE.......SCHOLZ
SHORT TERM...AML
LONG TERM....JDA
AVIATION.....AML
Hazardous weather outlook, Jul 12, 11:30 AM EDT, 1 hour 4 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LOUISVILLE KY
1130 AM EDT SAT JUL 12 2008

INZ076>079-083-084-089>092-KYZ023>043-045>049-053>057-061>067-
070>078-081-082-131430-
ORANGE IN-WASHINGTON IN-SCOTT IN-JEFFERSON IN-DUBOIS IN-
CRAWFORD IN-PERRY IN-HARRISON IN-FLOYD IN-CLARK IN-HANCOCK KY-
BRECKINRIDGE KY-MEADE KY-OHIO KY-GRAYSON KY-HARDIN KY-BULLITT KY-
JEFFERSON KY-OLDHAM KY-TRIMBLE KY-HENRY 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-
1130 AM EDT (1030 AM CDT) SAT JUL 12 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL
INDIANA AND CENTRAL KENTUCKY.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

SCATTERED THUNDERSTORMS WILL CONTINUE TO AFFECT THE BLUEGRASS REGION
THROUGH EARLY AFTERNOON. MORE THUNDERSTORMS WILL DEVELOP THIS
AFTERNOON AND EVENING AHEAD OF AN APPROACHING COOL FRONT. ANY OF THE
STRONGEST STORMS WILL BE CAPABLE OF PRODUCING GUSTY WINDS OF UP TO
50 MPH...VERY HEAVY RAINFALL...DANGEROUS LIGHTNING AND POSSIBLY SOME
SMALL HAIL.

THERE WILL BE A BETTER CHANCE OF THUNDERSTORMS OVERNIGHT AS THE
FRONT MOVES INTO SOUTHERN INDIANA. THE MAIN THREAT WILL BE HEAVY
RAIN AND LIGHTNING BUT GUSTY WINDS WILL ALSO BE POSSIBLE.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

HEAVY RAIN...GUSTY WINDS...AND DANGEROUS LIGHTNING WILL CONTINUE TO
BE A THREAT TO THE OUTLOOK AREA SUNDAY AS THE COOL FRONT MOVES
ACROSS CENTRAL KENTUCKY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME.

AML/JA/AL

In the hours before

Special weather statement, Jul 12, 10:53 AM EDT, 1 hour 41 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LOUISVILLE KY
1053 AM EDT SAT JUL 12 2008

KYZ035-036-039-040-046-047-054-055-065-066-075-077-078-081-082-
121545-
ADAIR-ANDERSON-BOYLE-CASEY-CLINTON-CUMBERLAND-FRANKLIN-MARION-MERCER-
MONROE-RUSSELL-SCOTT-TAYLOR-WASHINGTON-WOODFORD-
1053 AM EDT SAT JUL 12 2008

...LINE OF THUNDERSTORMS APPROACHING THE BLUEGRASS REGION...

AT 1050 AM EDT/950 AM CDT/...NATIONAL WEATHER SERVICE DOPPLER RADAR
WAS TRACKING A LINE OF THUNDERSTORMS EXTENDING FROM 9 MILES SOUTH OF
OWENTON...TO SPRINGFIELD...TO 11 MILES EAST OF CAMPBELLSVILLE AND TO
BURKESVILLE...MOVING EAST AT 25 MPH.

FREQUENT DEADLY LIGHTNING...VERY HEAVY RAINFALL WITH AMOUNTS OF
AROUND ONE INCH PER HOUR...AND GUSTY WINDS OF AROUND 45 MPH ARE
EXPECTED WITH THE STRONGEST STORMS.

THESE STORMS WILL BE...
  NEAR LAWRENCEBURG BY 1100 AM EDT.
  NEAR HARRODSBURG BY 1120 AM EDT.
  NEAR VERSAILLES BY 1125 AM EDT.
  NEAR LIBERTY BY 1130 AM EDT.

STAY TUNED TO NOAA ALL HAZARDS RADIO...WEATHER.GOV/LOUISVILLE ON THE
INTERNET...OR LOCAL MEDIA FOR LATER UPDATES AND POSSIBLE WARNINGS.

AL
Special weather statement, Jul 12, 11:27 AM EDT, 1 hour 7 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LOUISVILLE KY
1127 AM EDT SAT JUL 12 2008

KYZ036-037-041-121600-
FAYETTE-HARRISON-SCOTT-
1127 AM EDT SAT JUL 12 2008

...STRONG THUNDERSTORM OVER SCOTT COUNTY...

AT 1124 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A STRONG THUNDERSTORM NEAR GEORGETOWN...AND MOVING EAST AT 25 MPH.

CONTINUOUS DEADLY CLOUD TO GROUND LIGHTNING...SMALL PEA OR MARBLE
SIZE HAIL...AND STRONG GUSTY WINDS OF AROUND 50 MPH ARE EXPECTED
WITH THIS STORM. ALSO...TORRENTIAL RAIN IS OCCURING...WITH RAINFALL
AMOUNTS OF AROUND ONE INCH PER HALF AN HOUR. THIS RAIN WILL REDUCE
VISIBILITIES TO LESS THAN ONE HALF MILE.

THIS STORM WILL BE...
  NEAR OXFORD BY 1135 AM EDT.
  5 MILES NORTH OF NEW ZION BY 1140 AM EDT.
  NEAR GEORGETOWN SCOTT COUNTY AIRPORT BY 1145 AM EDT.
  NEAR LEESBURG BY 1150 AM EDT.

IF YOU ARE IN THE PATH OF THIS STORM...SEEK SHELTER INDOORS AND STAY
AWAY FROM WINDOWS. STAY TUNED TO NOAA ALL HAZARDS
RADIO...WEATHER.GOV/LOUISVILLE ON THE INTERNET...OR LOCAL MEDIA FOR
LATER UPDATES AND POSSIBLE WARNINGS.

AL
Special weather statement, Jul 12, 11:44 AM EDT, 50 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LOUISVILLE KY
1144 AM EDT SAT JUL 12 2008

KYZ047-048-055-056-067-121630-
BOYLE-GARRARD-JESSAMINE-LINCOLN-MERCER-
1144 AM EDT SAT JUL 12 2008

...STRONG THUNDERSTORM OVER BOYLE COUNTY...

AT 1143 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A STRONG THUNDERSTORM NEAR DANVILLE...MOVING EAST AT 25 MPH.

CONTINUOUS DEADLY CLOUD TO GROUND LIGHTNING...SMALL PEA OR MARBLE
SIZE HAIL...AND STRONG GUSTY WINDS OF UP TO 50 MPH ARE EXPECTED WITH
THIS STORM.

THIS STORM WILL BE...
  5 MILES NORTH OF STUART POWELL FIELD AIRPORT BY 1150 AM EDT.
  NEAR DANVILLE BY 1155 AM EDT.
  NEAR BRYANTSVILLE BY 1210 PM EDT.
  5 MILES NORTH OF LANCASTER BY 1215 PM EDT.
  NEAR MCCREARY BY 1225 PM EDT.
  NEAR BUCKEYE BY 1225 PM EDT.

TORRENTIAL RAINFALL IS OCCURRING. RAINFALL AMOUNTS OF AROUND ONE
INCH PER HALF HOUR ARE EXPECTED...WHICH WILL REDUCE VISIBILITIES TO
LESS THAN ONE HALF MILE. EXPECT PONDING OF WATER ON LOCAL ROADWAYS.
DRIVERS SHOULD SLOW DOWN AND TURN ON THEIR HEADLIGHTS IF
ENCOUNTERING HEAVY RAINS.

AL
Special weather statement, Jul 12, 11:52 AM EDT, 42 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LOUISVILLE KY
1152 AM EDT SAT JUL 12 2008

KYZ036-037-040>043-047>049-055>057-066-067-077-078-081-082-121700-
SCOTT KY-HARRISON KY-WOODFORD KY-FAYETTE KY-BOURBON KY-
NICHOLAS KY-MERCER KY-JESSAMINE KY-CLARK KY-BOYLE KY-GARRARD KY-
MADISON KY-CASEY KY-LINCOLN KY-ADAIR KY-RUSSELL KY-CUMBERLAND KY-
CLINTON KY-
INCLUDING THE CITIES OF...GEORGETOWN...CYNTHIANA...VERSAILLES...
LEXINGTON...PARIS...CARLISLE...HARRODSBURG...NICHOLASVILLE...
WINCHESTER...DANVILLE...LANCASTER...RICHMOND...LIBERTY...
STANFORD...COLUMBIA...JAMESTOWN...BURKESVILLE...ALBANY
1152 AM EDT SAT JUL 12 2008 /1052 AM CDT SAT JUL 12 2008/

AT 1145 AM EDT A BAND OF THUNDERSTORMS STRETCHED FROM NEAR
CYNTHIANA AND GEORGETOWN KENTUCKY SOUTH THROUGH DANVILLE TO
BURKESVILLE KENTUCKY. MANY OF THE STORMS CONTAINED VERY HEAVY RAIN
AND DANGEROUS LIGHTNING. THE STRONGER STORMS ALSO HAD GUSTY WINDS
AND POSSIBLY SOME SMALL HAIL.

THE STORMS WILL BE MOVING INTO LEXINGTON...PARIS AND LANCASTER
BEFORE 1115 AM EDT AND WILL REACH RICHMOND AND WINCHESTER BY 1245
PM EDT.

IF THE WEATHER BECOMES THREATENING...GET OUT OF POOLS AND MOVE TO
SAFE INDOOR SHELTER.

SCHOLZ
Local storm report, Jul 12, 11:57 AM EDT, 37 minutes before
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Special weather statement, Jul 12, 12:30 PM EDT, 4 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 12, 1:20 PM EDTAreal Flood AdvisoryLMKFayette, Jessamine, Woodford2 hr
Jul 12, 3:05 PM EDTAreal Flood AdvisoryLMKMonroe115 min
Jul 12, 3:10 PM EDTAreal Flood AdvisoryLMKMonroe110 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 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.