A MCS that formed in Illinois dove southeast through the day. This complex entered southern Indiana as a broken line with numerous damaging wind reports upstream.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS LMK wrote it up.
A MCS that formed in Illinois dove southeast through the day. This complex entered southern Indiana as a broken line with numerous damaging wind reports upstream. This system continued to produce widespread damaging wind gusts across southern Indiana and central Kentucky as it progressed into an unstable environment with 3500-4000 J/kg of CAPE. Numerous trees were toppled and power lines were downed leaving some residents without power.
The local office's own words before the first event, 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 the first event at Jul 19, 3:26 PM CST, 31 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LOUISVILLE KY 526 PM EDT MON JUL 19 2010 ...MESOSCALE UPDATE... BROKEN LINE OF CONVECTION WITH WELL ESTABLISHED COLD POOL IS NOW MAKING ITS WAY INTO THE NORTHWEST CWA. UPSTREAM...NUMEROUS SEVERE WIND GUSTS HAVE BEEN RECORDED WITH SEVERAL REPORTS OF DAMAGE AS WELL. STORMS ARE MOVING INTO A FAVORABLE ENVIRONMENT THROUGH THE REST OF THE EVENING HOURS AS LATEST RUC MESOANALYSIS SHOWS 3500 TO 4000 J/KG OF MIXED LAYER CAPE ALONG AN AXIS FROM CAMPBELLSVILLE TO LOUISVILLE TO JASPER. STRONGEST PORTIONS OF THE LINE HAVE NOW SEEMED TO SURGE FORWARD ON THIS AXIS OF INSTABILITY AND APPEAR TO BE TRAVELING TOWARD THE LOUISVILLE METRO AREA. ALSO...AREAS SOUTH OF THE WATCH BOX ALONG THE TENNESSEE BORDER COULD SEE MORE ACTIVITY THAN ORIGINALLY THOUGHT AS SOUTHERN END OF THE LINE HAS RE-STRENGTHENED AND BEGAN DIVING SOUTH. LATEST LAPS SOUNDINGS DO SHOW A BIT OF AN STABLE LAYER BETWEEN H9 AND H8...HOWEVER EXPECT THAT AS STRONG AS THE RADAR SIGNATURES ARE AND AS MUCH INSTABILITY AS THERE IS...WILL BE ABLE TO OVERCOME THIS EASILY. MAIN POINTS WITH THIS DISCUSSION...THE BOWLING GREEN AREA NOW LOOKS TO GET INTO THE ACTION MORE...BETWEEN 7 PM AND 10 PM...WITH STRONG TO SEVERE STORMS POSSIBLE. STAY TUNED FOR POSSIBLE WATCH EXTENSIONS. ALSO...THIS STORM HAS PRODUCED A LOT OF DAMAGE UPSTREAM INCLUDING A 60 MPH WIND GUST JUST NORTHWEST OF JASPER...SO AREAS DOWNSTREAM IN THE WATCH BOX SHOULD TAKE THESE STORMS AND WARNINGS VERY SERIOUSLY. BEST DEEP LAYER SHEAR IS NORTH OF THE AREA IN THE GREAT LAKES REGION...SO POTENTIAL FOR SUPERCELLS OR ANY TORNADO POTENTIAL IS LOW. .SHORT TERM (TONIGHT AND TUESDAY)... LOOKS TO BE A BUSY NIGHT AS CONVECTIVE COMPLEX OVER CENTRAL ILLINOIS IS STEAMING TOWARD THE NORTHERN CWA THIS AFTERNOON. CURRENTLY...HAVE ARRIVAL TIME IN SOUTHERN INDIANA COUNTIES TO THE OHIO RIVER BETWEEN 7 AND 10 PM...WELL FASTER THAN MODEL SOLUTIONS SUGGEST. HAVE INCREASED POPS TO LIKELY IN THE SOUTHERN INDIANA AND NORTHERN KENTUCKY THIS EVENING TO ACCOUNT FOR THE COMPLEX. ONGOING STORMS WILL BE FEEDING OFF HIGHLY UNSTABLE AIRMASS WITH MOST UNSTABLE CAPE VALUES UP TO 4000 J/KG FROM TERRE HAUTE IN SOUTHEASTWARD TO LOUISVILLE. CURRENT SOUNDINGS SHOW THAT INSTABILITY IS A BIT ELEVATED...HOWEVER WATER VAPOR IMAGERY SHOWS A SHORTWAVE CURRENTLY OVER MISSOURI AND RAPIDLY APPROACHING. THIS SHOULD HELP PROVIDE EXTRA DYNAMIC FORCING ALONG WITH STEEPER MID LEVEL LAPSE RATES. WOULD NOT BE SURPRISED TO SEE OUR AREA ADDED TO SPC RISK WITH NEXT UPDATE. THE MAIN THREATS WITH THESE STORMS WILL BE DAMAGING WINDS AND LARGE HAIL...ALONG WITH HEAVY RAINFALL AND EXCESSIVE LIGHTNING. WILL BE A BIT MORE CONCERNED ABOUT FLOODING THREAT IN THE NORTH TONIGHT AS WE HAVE BEEN HIT BY SCATTERED HEAVY RAIN OVER THE WEEKEND. AREAS THAT HAVE SEEN A LOT OF RAINFALL WILL HAVE TO BE MONITORED FOR HYDRO PROBLEMS. WILL MENTION THREAT IN HWO ALONG WITH SEVERE THUNDERSTORM THREATS. AFTER MIDNIGHT...EXPECT THE MAJORITY OF CONVECTION TO BE ENDING IN OUR AREA WITH BEST ACTION TO THE NORTH OF THE AREA IN BETTER CORE OF MID LEVEL FLOW. ALSO...WITH H5 RIDGING SLOWLY BUILDING IN FROM THE SOUTHWEST...ACTIVITY SHOULD BE LIFTED NORTHWARD. WILL MAINTAIN ISOLATED POPS IN THE SOUTH TO SCATTERED POPS IN THE NORTH BASED ON UNSTABLE AIRMASS ALONE. TOMORROW SHOULD BE A MAINLY DIURNAL EVENT IN THE NORTHERN CWA AS H5 RIDGING CONTINUES TO BUILD IN FROM THE SOUTHWEST. WILL KEEP INHERITED FORECAST OF 20 POPS IN SOUTH AND 30 POPS IN NORTH. AS WITH THE POP GRADIENT...TEMPERATURE GRADIENT WILL BE SIMILAR WITH LOWER 90S IN THE SOUTH AND UPPER 80S IN THE NORTH. WILL HAVE TO CONTINUE TO BE ON THE LOOKOUT FOR UPSTREAM MCS ACTIVITY...HOWEVER WITH RIDGE BUILDING IN STRONGER...SHOULD BE LESS LIKELY TO GET A CONVECTIVE COMPLEX TO COME BARRELING INTO OUR AREA. .LONG TERM (TUESDAY NIGHT - MONDAY)... WILL ONLY MAKE SUBTLE CHANGES FOR THE LONG TERM PERIOD WITH OUR CURRENT FCST/MODEL GUIDANCE/HPC INPUT IN SUPPORT. FOR TUE NIGHT THRU WED NIGHT...LITTLE CHANGE IN THE UPPER LEVEL RIDGE NOTED WITH THE CENTER OVER THE TN VLY/NRN GULF STATES. QSTNRY BNDRY FROM CENTRAL PARTS OF IL/IN SAGS A BIT SWD INTO SRN INDIANA WED...SO WILL CONTINUE LOW CHC POPS THRU THE PERIOD...HIEST ACRS OUR NRN FA...CLOSEST TO THE VERY SLOW MOVG FRONT...WHERE CONVERGENCE/MOISTURE POOLING SHUD BE GREATEST. BEYOND THAT PERIOD...FROM THU THRU MON...SUBTLE HEIGHT RISES NOTED THU AND FRI AS THE RIDGE STRENGTHENS A BIT. WITH THE STALLED/SLOW MOVG FRONT OVER SRN INDIANA ON THU...WILL KEEP SCT TO ISOLD WORDING FOR STORMS IN THE FCST AND THEN LET THE DRY PERIOD FOR THU NIGHT THRU FRI NIGHT CONTINUE AS BNDRY TURNS NWD AS A WARM FRONT. FOR THE REMAINDER OF THE PERIOD...THE SRN EDGE OF THE WLYS DIPS SWD INTO OUR FA AS SUBTLE UPR LEVEL IMPULSES DROP SEWD ON INCREASING NW FLO. ASSOCIATED COOL FRONT PROGGED TO APPOACH OUR FA SAT AND STALL IN THE OH RIVER VCNTY SUN AND MON...TYPICAL OF COOL FRONTS THIS TIME OF YEAR. WILL INCREASE POPS A BIT FOR THE WEEKEND AND LEAVE ISOLD WORDING IN MON AS FRONT BASICALLY WASHES OUT. TEMP AND COMFORT WISE...IT APPEARS LOWER TO MID 90 MAXS WILL CONTINUE AT LEAST THRU SAT WITH THE OPPRESSIVE HUMIDITY CONTINUING. HIGHEST TEMPS WILL BE ALONG/WEST OF INTERSTATE 65. && .AVIATION (18Z TAF ISSUANCE)... STILL EXPECT MAINLY VFR CONDITIONS THROUGH THE FORECAST PERIOD AS SCT TO BKN STRATOCU FROM THIS MORNING HAS LIFTED WITH MIXING AND HAS SCATTERED EARLY THIS AFTERNOON. HAVE LOW CONFIDENCE IN THUNDERSTORM CHANCES AT THE TAF SITES...HOWEVER FEEL SDF HAS THE GREATEST SHOT AT SEEING THUNDERSTORMS BETWEEN 6 PM AND MIDNIGHT AS CONVECTIVE COMPLEX FROM UPSTREAM WORKS ITS WAY INTO THE REGION. WATER VAPOR IMAGERY SHOWS A SHORTWAVE THAT WILL ARRIVE ABOUT THE SAME TIME AS THE THUNDERSTORM COMPLEX SO EXPECT THAT STORMS COULD BE QUITE STRONG DURING THIS TIME. HAVE INCLUDED VCTS AT SDF DURING THIS TIME FOR NOW AND WILL REFINE FORECAST WITH TIMING AND DETAILS AS CONFIDENCE GROWS IN THIS SCENARIO. CERTAINLY...LOW MVFR OR WORSE CONDITIONS WILL BE POSSIBLE IF THUNDERSTORM COMPLEX MAKES IT TO THE TERMINAL THIS EVENING. OTHERWISE...BROAD AND STEADY SOUTHWEST FLOW WILL KEEP THINGS HOT AND MUGGY. BWG WILL HAVE A SHOT AT RESTRICTED VISIBILITIES TONIGHT AS WELL. WINDS WILL BE A BIT STRONGER OUT OF THE SOUTHWEST ON TUESDAY AFTERNOON...WITH SOME GUSTS AROUND 20 MPH POSSIBLE. && .LMK WATCHES/WARNINGS/ADVISORIES... KY...NONE. IN...NONE. && MESOSCALE......BJS SHORT TERM.....BJS LONG TERM......DK/11 AVIATION.......BJS
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LOUISVILLE KY 427 PM EDT MON JUL 19 2010 INZ076>079-083-084-089>092-KYZ023>025-028>035-038-039-045-202030- 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-HARDIN KY-BULLITT KY-JEFFERSON KY- OLDHAM KY-TRIMBLE KY-HENRY KY-SHELBY KY-FRANKLIN KY-SPENCER KY- ANDERSON KY-NELSON KY- 427 PM EDT MON JUL 19 2010 /327 PM CDT MON JUL 19 2010/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL INDIANA AND CENTRAL KENTUCKY. .DAY ONE...TONIGHT. SCATTERED TO NUMEROUS THUNDERSTORMS...SOME OF WHICH COULD BE SEVERE...WILL ENTER SOUTHERN INDIANA AND NORTHERN KENTUCKY THIS EVENING. A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 10 PM EDT/9 PM CDT THIS EVENING WITH DAMAGING WINDS BEING THE MAIN THREAT. SMALL HAIL...HEAVY RAINFALL...AND EXCESSIVE LIGHTNING WILL ALSO ACCOMPANY THE STORMS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED EACH DAY THROUGH THURSDAY AS A SLOW SOUTHWARD MOVING FRONT REACHES SOUTHERN INDIANA WEDNESDAY AND STALLS NEAR THE OHIO RIVER WEDNESDAY NIGHT AND THURSDAY. THE BEST CHANCE FOR STORMS WILL BE ACROSS SOUTHERN INDIANA AND NORTH CENTRAL KENTUCKY. THOUGH WIDESPREAD SEVERE OUTBREAKS ARE NOT EXPECTED...ISOLATED STRONG TO SEVERE STORMS WILL BE POSSIBLE... ESPECIALLY ACROSS SOUTHERN INDIANA. LOCALLY HEAVY RAIN...GUSTY WINDS...AND FREQUENT LIGHTNING WILL BE THE MAIN THREATS. ISOLATED TO SCATTERED STORMS ARE EXPECTED AGAIN FOR THE WEEKEND AS ANOTHER COOL FRONT APPROACHES. EACH DAY THIS WEEK WILL GET PROGRESSIVELY HOTTER THROUGH FRIDAY...SO THAT BY THURSDAY AND FRIDAY...AFTERNOON HIGHS WILL BE IN THE LOWER AND MIDDLE 90S WITH HEAT INDEX READINGS AROUND 100 DEGREES. PLAN YOUR DAY AROUND THE HEAT...STAYING IN AIR CONDITIONING OR SHADE AS MUCH AS POSSIBLE DURING THE HOT AND HUMID AFTERNOONS. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE ENCOURAGED TO REPORT INSTANCES OF SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE THIS EVENING. KYZ026-027-036-037-040>043-046>049-053>057-061>067-070>078-081- 082-202030- OHIO KY-GRAYSON KY-SCOTT KY-HARRISON KY-WOODFORD KY-FAYETTE KY- BOURBON KY-NICHOLAS 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- 427 PM EDT MON JUL 19 2010 /327 PM CDT MON JUL 19 2010/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL INDIANA AND CENTRAL KENTUCKY. .DAY ONE...TONIGHT. SCATTERED THUNDERSTORMS WILL BE POSSIBLE THIS EVENING WITH HEAVY RAINFALL...GUSTY WINDS...SMALL HAIL...AND EXCESSIVE LIGHTNING BEING THE MAIN THREATS. THERE IS POTENTIAL FOR SOME OF THE THUNDERSTORMS TO BECOME SEVERE. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED EACH DAY THROUGH THURSDAY AS A SLOW SOUTHWARD MOVING FRONT REACHES SOUTHERN INDIANA WEDNESDAY AND STALLS NEAR THE OHIO RIVER WEDNESDAY NIGHT AND THURSDAY. THE BEST CHANCE FOR STORMS WILL BE ACROSS SOUTHERN INDIANA AND NORTH CENTRAL KENTUCKY. THOUGH WIDESPREAD SEVERE OUTBREAKS ARE NOT EXPECTED...ISOLATED STRONG TO SEVERE STORMS WILL BE POSSIBLE... ESPECIALLY ACROSS SOUTHERN INDIANA. LOCALLY HEAVY RAIN...GUSTY WINDS...AND FREQUENT LIGHTNING WILL BE THE MAIN THREATS. ISOLATED TO SCATTERED STORMS ARE EXPECTED AGAIN FOR THE WEEKEND AS ANOTHER COOL FRONT APPROACHES. EACH DAY THIS WEEK WILL GET PROGRESSIVELY HOTTER THROUGH FRIDAY...SO THAT BY THURSDAY AND FRIDAY...AFTERNOON HIGHS WILL BE IN THE LOWER AND MIDDLE 90S WITH HEAT INDEX READINGS AROUND 100 DEGREES. PLAN YOUR DAY AROUND THE HEAT...STAYING IN AIR CONDITIONING OR SHADE AS MUCH AS POSSIBLE DURING THE HOT AND HUMID AFTERNOONS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THIS EVENING. BJS/DK
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LOUISVILLE KY
437 PM EDT MON JUL 19 2010
INZ083-192115-
DUBOIS-
437 PM EDT MON JUL 19 2010
...LINE OF STRONG THUNDERSTORMS HEADING TOWARD DUBOIS COUNTY
INDIANA...
AT 435 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
TRACKING A LINE OF STRONG TO SEVERE STORMS LOCATED ALONG THE
ILLINOIS AND INDIANA BORDER. THESE STORMS WERE MOVING SOUTHEAST AT
40 TO 45 MPH.
BASED ON THEIR CURRENT SPEED...THESE STORMS WILL BEGIN TO IMPACT THE
NORTHWEST SECTIONS OF DUBOIS COUNTY WITHIN THE NEXT 45 MINUTES TO AN
HOUR. FREQUENT CLOUD TO GROUND LIGHTNING...TORRENTIAL RAINFALL AND
WIND GUSTS OF 45 TO 50 MPH WILL BE POSSIBLE WITH THESE STORMS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE IN THE PATH OF THESE STORMS...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.
&&
LAT...LON 3851 8708 3851 8700 3849 8696 3850 8692
3849 8690 3853 8685 3852 8670 3825 8669
3824 8679 3820 8680 3820 8708 3832 8709
TIME...MOT...LOC 2034Z 305DEG 44KT 3879 8738 3821 8759
MJPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LOUISVILLE KY
516 PM EDT MON JUL 19 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0512 PM TSTM WND GST 2 N IRELAND 38.45N 87.00W
07/19/2010 E60 MPH DUBOIS IN TRAINED SPOTTER
&&
EVENT NUMBER LMK1000432
NFThe Evansville,IN radar (KVWX), 81 km away, was scanning. The volume nearest the first event began at 21:57 UTC.
18 thunderstorm wind, 1 lightning. Local standard time, as filed.
A trained spotter reported estimated thunderstorm winds of up to 60 mph.
Several roads were blocked by falling trees, including Cooper Rd. just west of Hawesville.
Power lines were blown down in Cloversport.
Power lines were blown down in New Bethel and a tree was blown down in Hardinsburg.
Numerous trees and power lines were blown down in the central and eastern part of Hart county.
Several trees were blown down in the northwestern part of the county near the communities of Roundfield and Lindseyville.
Two trees were blown down in Summersville.
Several trees were blown down in the Knifely area.
Trees were blown down in Campbellsville.
Lightning struck a tree and caused a fire on Innovation Dr.
A tent was blown over at the Bluegrass fair in Masterson Station Park. Three people were reported to be injured.
A tree was blown down at Military Pike Rd. just west of Lexington.
Tree were blown near Springhill Drive.
A trained spotter reported estimated wind gusts of 60 mph.
Power lines were blown down near McAffee. Several trees were also reported blown down across the northern and western portions of the county.
A tree was blown down along State Highway 33 near the Woodford-Jessamine county line.
Power outages were reported in two locations near Bethelridge. Several trees were blown down near Yosemite.
Two trees were blown down near Nicholasville along Short Shun and Elm Fork Roads.
Several maple trees were blown down and blocking roads.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Kentucky in 2010Every state in 2010This day in weather historyWarnings in Kentucky, July 2010
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 252884, 252886, 252887, 252893, 253947, 252896, 252895, 253949, 253950, 252883, 253953, 253951, 253952, 253954, 253956, 253955, 254072, 254071, 253958.