Scattered showers and thunderstorms developed durin gthe afternoon hours across south central Louisiana. Flash flooding was reported in the Youngsville area, with a funnel cloud reported near Eunice.
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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 LCH wrote it up.
Scattered showers and thunderstorms developed durin gthe afternoon hours across south central Louisiana. Flash flooding was reported in the Youngsville area, with a funnel cloud reported near Eunice.
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 Lake Charles, LA wrote its last area forecast discussion before the first event at Jul 17, 9:40 AM CST, 3 hours earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LAKE CHARLES LA 1040 AM CDT FRI JUL 17 2009 .UPDATE... SHOWERS AND THUNDERSTORM ACTIVITY CONTINUES TO DEVELOP IN EARNEST ACROSS SOUTHERN ZONES AND IN THE COASTAL WATERS...AHEAD OF THE WEAKENING MCS FROM EARLIER THIS MORNING WHICH HAS ALL BUT FALLEN APART OVER FAR NORTHERN ZONES. RESIDUAL OUTFLOW BOUNDARIES FROM THE MCS ALONG WITH OUTFLOW BOUNDARIES FROM CURRENT CONVECTION ALL SUGGEST LIKELY POPS FOR TODAY AND HAVE INCREASED RAIN CHANCES AREAWIDE. WITH THE WIDESPREAD CLOUDS AND PRECIP HAVE LOWERED HIGH TEMPS SOMEWHAT BUT WITH SOME BREAKS IN THE CLOUDS SHOULD STILL REACH THE LOW 90S IN MOST LOCATIONS. MADE OTHER MINOR ADJUSTMENTS TO GRIDS WITH UPDATED PRODUCTS ALREADY SENT. SHAMBURGER && .PREV DISCUSSION... /ISSUED 759 AM CDT FRI JUL 17 2009/ UPDATE...ONCOMING MCS IS WEAKENING BUT LOOKS TO BE HOLDING TOGETHER WELL ENOUGH TO RAISE POPS INTO THE LIKELY CATEGORY FOR THE LAKES AREA OF SOUTHEAST TEXAS AND WESTERN PORTIONS OF CENTRAL LOUISIANA. UPDATED ZONES OUT SHORTLY. 11 PREV DISCUSSION... /ISSUED 642 AM CDT FRI JUL 17 2009/ AVIATION... SCATTERED SHOWERS AND THUNDERSTORMS HAVE DEVELOPED ALONG THE COAST THIS MORNING. EXPECT THIS ACTIVITY TO EXPAND INLAND THIS MORNING AS ATMOSPHERE BEGINS TO HEAT UP...ESPECIALLY WITH LEFTOVER BOUNDARIES AROUND THE AREA FROM LAST NIGHTS MCS SERVING AS A FOCUS. IN ADDITION...ANOTHER COMPLEX NOW OVER NORTHEAST TX IS MOVING SOUTHEAST TOWARD THE AREA AND SHOULD BEGIN AFFECTING KAEX BY MIDMORNING. WITH THIS IN MIND...HAVE VCTS FOR SOUTHERN TAF SITES THROUGH 18Z...WITH TEMPO GROUPS DURING THE AFTERNOON...WHILE EXPECT POSSIBLE CONVECTION A BIT EARLIER AROUND KAEX WITH TEMPO GROUP FOR 16-20Z. EXPECT MVFR/IFR CIGS AND VISBYS AS WELL AS GUSTY WINDS IN AREAS WHERE THUNDERSTORMS OCCUR. OTHERWISE...OUTSIDE OF CONVECTION...SKIES AND VISBYS WILL BE VFR WITH LIGHT VARIABLE WINDS. PREV DISCUSSION... /ISSUED 504 AM CDT FRI JUL 17 2009/ SYNOPSIS...A FADING CONVECTIVE COMPLEX CONTINUES TO PROGRESS SOUTHWARD THROUGH CENTRAL LOUISIANA WITH ANOTHER STRONGER COMPLEX UPSTREAM ABOUT TO CROSS THE I-20 CORRIDOR INTO NE TEXAS AND NW LOUSIANA. SHORT TERM...ASSUMING PROPAGATION OF THE UPSTREAM MCS WILL CONTINUE THEN THUNDERSTORMS WILL BE ARRIVING INTO CENTRAL LOUISIANA AROUND NOON JUST AS TEMPERATURES REACH CONVECTIVE LEVELS. SINCE HIGH THETA AIR LIES IN THE PATH OF THIS MCS AND THERE IS A FAVORABLE RIGHT REAR QUADRANT OF A DEEP H2 TO H3 JETSTREAK OVER INTERIOR SE TEXAS AND CEN LA...AND THAT FCST PWATS ARE CLOSE TO 2 INCHES IN THOSE AREAS, WILL GO AHEAD WITH A 50 POP FOR THAT AREA. THIS MAY NEED UPDATING TO LIKELY CHANCES. A 50 POP LOOKS GOOD FOR THE REMAINDER OF THE AREA AS WELL WITH SHOWERS ONGOING OVER THE COASTAL WATERS AND INTO SE TX...SW AND S CEN LA AT THIS TIME. LONG TERM...GRADUALLY TAPERING OFF THE PRECIP CHANCES SATURDAY AND SUNDAY AS THE REGION COMES UNDER INCREASINGLY NWLY FLOW ALOFT AS THE UPPER TROF DEEPENS JUST EAST OF THE MS VALLEY. SUFFICIENT MOISTURE WITH INSTABILITY FROM COOLING ALOFT SHOULD KEEP AT LEAST CLIMO RAIN CHANCES THRU THE WEEKEND. A BUILDING BERMUDA RIDGE NEAR THE SURFACE SHOULD HELP KEEP RAIN CHANCES BELOW CLIMO BUT STILL MENTIONABLE NEXT WEEK. A BACK DOOR COLD FRONT STALLING NEAR THE COAST WILL AID IN THESE RAIN CHANCES SUNDAY THROUGH WEDNESDAY. MARINE...LIGHT ONSHORE WINDS INTO SUNDAY BECOME MORE VARIABLE DUE TO THE STALLING FRONT MONDAY AND BEYOND. THUNDERSTORMS SHOULD TAPER OFF AROUND MONDAY AS HIGH PRESSURE BEGINS TO BUILD FROM THE EAST. 11 && .PRELIMINARY POINT TEMPS/POPS... KLCH 91 74 91 71 89 / 60 30 40 30 30 KBPT 92 73 96 72 91 / 60 30 40 30 30 KAEX 93 75 91 68 89 / 60 30 40 30 20 KLFT 91 74 90 71 86 / 60 30 40 30 30 && .LCH WATCHES/WARNINGS/ADVISORIES... LA...NONE. TX...NONE. GM...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LAKE CHARLES LA 529 AM CDT FRI JUL 17 2009 GMZ430-432-435-450-452-455-470-472-475-LAZ027>033-041>045-051>055- TXZ180>182-201-215-216-181030- SABINE LAKE-CALCASIEU LAKE-VERMILION BAY- COASTAL WATERS FROM CAMERON, LA TO HIGH ISLAND, TX OUT 20 NM- COASTAL WATERS FROM INTRACOASTAL CITY TO CAMERON, LA OUT 20 NM- COASTAL WATERS FROM LOWER ATCHAFALAYA RIVER TO INTRACOASTAL CITY, LA OUT 20 NM- WATERS FROM CAMERON, LA TO HIGH ISLAND, TX EXTENDING FROM 20 NM TO 60 NM- WATERS FROM INTRACOASTAL CITY, LA TO CAMERON, LA EXTENDING FROM 20 NM TO 60 NM- WATERS FROM LOWER ATCHAFALAYA RIVER TO INTRACOASTAL CITY, LA EXTENDING FROM 20 NM TO 60 NM-VERNON-RAPIDES-AVOYELLES-BEAUREGARD- ALLEN-EVANGELINE-ST. LANDRY-CALCASIEU-JEFFERSON DAVIS-ACADIA- LAFAYETTE-UPPER ST. MARTIN-CAMERON-VERMILION-IBERIA-ST. MARY- LOWER ST. MARTIN-TYLER-JASPER-NEWTON-HARDIN-JEFFERSON-ORANGE- 529 AM CDT FRI JUL 17 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF THE NORTHWEST GULF OF MEXICO...CENTRAL LOUISIANA...SOUTH CENTRAL LOUISIANA... SOUTHWEST LOUISIANA...WEST CENTRAL LOUISIANA AND SOUTHEAST TEXAS. .DAY ONE...TODAY AND TONIGHT THUNDERSTORM COMPLEXES WILL MOVE THROUGH FROM THE NORTH TODAY. THESE STORMS WILL CONTAIN BRIEF GUSTY WINDS, FREQUENT CLOUD TO GROUND LIGHTNING, AND PERIODS OF LOCALLY HEAVY RAINFALL. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY SCATTERED AFTERNOON AND EARLY EVENING SHOWERS AND THUNDERSTORMS WILL BECOME FEWER MONDAY AND BEYOND AS HIGH PRESSURE BEGINS TO BUILD FROM THE EAST. .SPOTTER INFORMATION STATEMENT... ACTIVATION OF SPOTTERS IS NOT ANTICAPATED. 11
The Lake Charles radar (KLCH), 109 km away, was scanning. The volume nearest the first event began at 18:40 UTC.
1 flash flood, 1 funnel cloud. Local standard time, as filed.
KLFY-TV reported roads completely underwater west of Youngsville, with flood waters approaching several homes. KLCH Doppler Radar estimated rainfall rates of 3 inches per hour in that area.
KKLFY-TV reported a funnel cloud two to three miles east of Eunice.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Louisiana in 2009Every state in 2009This day in weather historyWarnings in Louisiana, July 2009
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 2026-10-01. Each event’s entry at NCEI: 190050, 190053.