Flash flooding was reported across portions of northeast Texas into northwest and north central Louisiana during the morning hours of October 12th. These storms developed along a stationary boundary which helped to focus heavy rainfall along the Interstate 20 corridor of northeast Texas and northern Louisiana.
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 SHV wrote it up.
Flash flooding was reported across portions of northeast Texas into northwest and north central Louisiana during the morning hours of October 12th. These storms developed along a stationary boundary which helped to focus heavy rainfall along the Interstate 20 corridor of northeast Texas and northern Louisiana. A very moist airmass was in place across the region when the storms developed and trained across the same general area.
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 Shreveport, LA wrote its last area forecast discussion before the first event at Oct 12, 2:32 AM CST, 7 hours 3 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SHREVEPORT LA 332 AM CDT MON OCT 12 2009 .DISCUSSION... ANOTHER DIFFICULT FORECAST FOR THE UPCOMING WORK WEEK WITH PERIODS OF RAIN...SEVERAL FRONTAL BOUNDARIES TO DISCUSS AND JUST HOW ALL THIS WILL EFFECT THE ROLLER COASTER RIDE OF TEMPERATURES ONCE AGAIN THIS WEEK. WIDESPREAD RAIN WITH ELEVATED THUNDERSTORMS THIS MORNING DUE TO STRONG ISENTROPIC LIFT PATTERN. FRONTAL BOUNDARY APPEARS TO BE LOCATED JUST OFF THE TX/LA COASTS BUT AS THE RAIN FALLS THROUGH A LAYER OF WARMER AIR JUST OFF THE SURFACE...ITS HELPING TO ALLOW TEMPERATURES TO SLOWLY RISE ACROSS THE REGION EARLY THIS MORNING. WHILE THETA-E ADVECTION DOES DIMINISH A LITTLE FROM WEST TO EAST THIS MORNING... WENT AHEAD AND ADVERTISED CATEGORICAL POPS ACROSS OUR EASTERN TWO THIRDS AND LIKELY POPS ACROSS OUR WESTERN THIRD. THE BOUNDARY TO OUR SOUTH WILL SLOWLY BEGIN TO MOVE NORTHWARD TODAY AS A WARM FRONT AND SHOULD BE IN THE NEIGHBORING VICINITY OF A LFK/HEZ LINE BY 00Z TNGT. THIS BOUNDARY SHOULD WAFFLE AROUND OVERNIGHT TONIGHT BEFORE GETTING A BETTER PUSH NORTHWARD DURING THE DAY TUESDAY... PERHAPS MAKING IT NEAR THE I-20 CORRIDOR. NEEDLESS TO DAY...THE TEMPERATURE FORECAST IS A NIGHTMARE DEPENDING ON JUST WHERE THIS BOUNDARY RESIDES OVER THE NEXT 24-36 HOURS. CONCERNING TEMPERATURE GUIDANCE...WENT CLOSER TO THE NAM/WRF #S AS THE GFS HAS A HISTORY OF WANTING TO ERODE CP AIRMASSES TOO QUICKLY. ALL SHORT TERM PROGS INCLUDING THE 00Z ECMWF PAINT THE POTENTIAL FOR HEAVY RAINFALL ACROSS OUR REGION ON TUESDAY...ESPECIALLY NORTH OF THE I-20 CORRIDOR OF NE TX/N LA AND THIS IS AN AREA THAT DEFINITELY DOES NOT NEED ADDITIONAL HEAVY RAINFALL. THIS WILL NEED TO BE MONITORED CLOSELY BY FUTURE SHIFTS AS A FLASH FLOOD WATCH MAY BE NEEDED FOR AT LEAST OUR NORTHERN ZONES ON TUESDAY. MUCH WARMER TUESDAY NIGHT INTO WEDNESDAY AS THE WARM FRONT SHOULD CONTINUE TO MOVE NORTHWARD...PERHAPS MAKING IT NORTH OF OUR FA BY WED AFTN. STRONG WESTERLY MID/UPPER FLOW WILL DEVELOP ACROSS THE SOUTHERN PLAINS DURING THE DAY WEDNESDAY INTO WEDNESDAY NIGHT WHICH WILL AID IN MOVING A STRONG COLD FRONT INTO OUR NW ZONES LATE WEDNESDAY NIGHT INTO THE PREDAWN HOURS ON THURSDAY. STRONG STORMS ARE POSSIBLE ALONG THIS BOUNDARY BUT THERE WILL BE CAPPING CONCERNS IF OUR REGION REMAINS IN THE WARM SECTOR SOUTH OF THE NORTHWARD MOVING WARM FRONT WED/WED NIGHT. UPPER RIDGE FINALLY MIGRATES INTO THE SW CONUS AS A DEEP TROUGH CARVES ITS WAY INTO THE OHIO/TENN VALLEY BY THE END OF THE WEEK. MUCH COLDER AIR WILL FILTER IN BEHIND THE COLD FRONT ON THURSDAY WITH REINFORCING SHOTS OF COOLER AIR THROUGH THE WEEKEND. GIVEN THE AMPLIFICATION OF THE TROUGH TO OUR EAST...HAVE UNDERCUT GUIDANCE TEMPS FOR FRIDAY THROUGH THE WEEKEND. THANKS FOR COORDN...FWD...PRELIMS TO FOLLOW...13. && .AVIATION... A FAIRLY ILL DEFINED WARM FRONTAL BOUNDARY SOUTH OF THE INTERSTATE 10 CORRIDOR OF SOUTH LA/SE TX...SLOWLY MOVE NORTHWARD THRU PERIOD. IFR CIGS AND PERIOD OF MODERATE TO HEAVY RAIN IN ELEVATED CONVECTION WITH EMBEDDED TRW ONGOING MAINLY ALONG AND NORTH OF INTERSTATE 20. WARM FRONT MAY REACH LFK AFTER 18Z...WITH CIGS LIFTING TO MVFR AND MORE SCATTERED BUT DEEPER CONVECTION AFTER FROPA. THIS FRONT WILL SLOWLY MOVE TO NEAR THE INTERSTATE 20 CORRIDOR BY 18Z TUE TIME RANGE. CURRENTLY LFK SEE PREVAILING IFR VISIBILITIES WITH NO PCPN... ELSEWHERE...TEMPO LOW VISIBILITIES MAINLY PCPN INDUCED./VII/ && .PRELIMINARY POINT TEMPS/POPS... SHV 66 61 72 69 83 / 90 70 90 80 60 MLU 69 62 74 68 78 / 90 70 90 80 80 DEQ 62 56 64 59 79 / 90 70 90 80 60 TXK 59 55 65 61 80 / 90 70 90 80 60 ELD 62 57 67 64 77 / 90 70 90 80 80 TYR 64 60 70 69 86 / 70 70 90 80 50 GGG 66 60 72 69 85 / 70 70 90 80 50 LFK 73 67 81 73 89 / 90 60 90 60 50 && .SHV WATCHES/WARNINGS/ADVISORIES... AR...NONE. LA...NONE. OK...NONE. TX...NONE. && 13/07
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SHREVEPORT LA 413 AM CDT MON OCT 12 2009 ARZ050-051-059>061-070>073-OKZ077-TXZ096-097-108>112-121800- SEVIER-HOWARD-LITTLE RIVER-HEMPSTEAD-NEVADA-MILLER-LAFAYETTE- COLUMBIA-UNION AR-MCCURTAIN-RED RIVER-BOWIE-FRANKLIN-TITUS-CAMP- MORRIS-CASS- 413 AM CDT MON OCT 12 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL ARKANSAS...SOUTHWEST ARKANSAS...SOUTHEAST OKLAHOMA AND NORTHEAST TEXAS. .DAY ONE...TODAY AND TONIGHT... PERIODS OF LIGHT TO MODERATE RAIN WILL CONTINUE THROUGH TONIGHT ACROSS MUCH OF NORTHEAST TEXAS...MCCURTAIN COUNTY IN SOUTHEAST OKLAHOMA...AS WELL AS SOUTHWEST ARKANSAS. ADDITIONAL RAINFALL AMOUNTS THROUGH TONIGHT SHOULD NOT EXCEED ONE TO ONE AND ONE HALF INCHES. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY... PERIODS OF MODERATE TO HEAVY RAIN WILL BE POSSIBLE DURING THE DAY TUESDAY ACROSS THE REGION AS A WARM FRONT PULLS UP NEARLY STATIONARY SOUTH OF THE REGION...TOWARDS THE INTERSTATE 20 CORRIDOR OF NORTHEAST TEXAS INTO NORTHERN LOUISIANA. RAINFALL AMOUNTS BEGINNING EARLY TUESDAY INTO TUESDAY NIGHT COULD TOTAL TWO TO FOUR INCHES...ESPECIALLY ALONG AND NORTH OF THE INTERSTATE 30 CORRIDOR. THE GROUND REMAINS VERY SATURATED ACROSS THE REGION AND ADDITIONAL RAINFALL OF THIS MAGNITUDE COULD CAUSE FLASH FLOODING PROBLEMS. .SPOTTER INFORMATION STATEMENT... SPOTTERS AND EMERGENCY MANAGEMENT PERSONNEL SHOULD NOT BE NEEDED THROUGH TONIGHT. HOWEVER...IF HEAVY RAIN DEVELOPS ON TUESDAY... FIRST RESPONDERS MAY BE NEEDED TO HELP ASSIST WITH FLOODING CONCERNS ACROSS THEIR COUNTY. LAZ001>006-010>014-017>022-TXZ124>126-136>138-149>153-165>167- 121800- CADDO-BOSSIER-WEBSTER-CLAIBORNE-LINCOLN-UNION LA-DE SOTO- RED RIVER-BIENVILLE-JACKSON-OUACHITA-SABINE LA-NATCHITOCHES-WINN- GRANT-CALDWELL-LA SALLE-WOOD-UPSHUR-MARION-SMITH-GREGG-HARRISON- CHEROKEE-RUSK-PANOLA-NACOGDOCHES-SHELBY-ANGELINA-SAN AUGUSTINE- SABINE TX- 413 AM CDT MON OCT 12 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL LOUISIANA...NORTHWEST LOUISIANA...EAST TEXAS AND NORTHEAST TEXAS. .DAY ONE...TODAY AND TONIGHT... SHOWERS AND A FEW THUNDERSTORMS WILL BE POSSIBLE ACROSS THE REGION TODAY. SOME OF THESE COULD CONTAIN PERIODS OF MODERATE RAINFALL... ESPECIALLY ALONG AND SOUTH OF THE INTERSTATE 20 CORRIDOR OF NORTHEAST TEXAS AND NORTHERN LOUISIANA AS A WARM FRONT BEGINS TO LIFT NORTHWARD FROM THE LOUISIANA AND TEXAS GULF COAST. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY... SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS WILL CONTINUE TO PLAGUE THE REGION THROUGH AT LEAST THURSDAY. STORMS DURING THE DAY THURSDAY COULD BE STRONG TO SEVERE IN NATURE BUT TIMING DIFFERENCES AND WARM AIR ALOFT MAY PRECLUDE STRONG THUNDERSTORM DEVELOPMENT. THIS WILL NEED TO BE CLOSELY MONITORED THROUGH THE WEEK. .SPOTTER INFORMATION STATEMENT... ACTIVATION OF STORM SPOTTERS AND EMERGENCE MANAGEMENT PERSONNEL SHOULD NOT BE NEEDED TODAY OR TONIGHT. 13
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</html>The Shreveport radar (KSHV), 53 km away, was scanning. The volume nearest the first event began at 15:32 UTC.
3 flash flood. Local standard time, as filed.
Cox Road at Birmingham...Five Notch Road just south of I-20...Buck Sherrod Road just south of the creek and FM 968 at Potters Creek were all closed due to high water.
The South Service Road...FM 9 south at Dixie Lake Lane...and the Jonesville Cutoff at the bridge were all closed due to high water.
Marshall Leigh Road at John Sanders Road in Karnack, Texas was closed due to high water. Additional roads flooded and closed throughout the county include FM 134 between Jonesville and US Hwy. 80, the South Service Road at the 619 mile marker, Airlite Road two miles south of State Highway 154, FM 31 north of interstate Hwy. 20, Cargill Road 2 miles east of State Hwy. 59 and Magnolia Road one mile south of Interstate 20.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2009Every state in 2009This day in weather historyWarnings in Texas, October 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 2026-09-30. Each event’s entry at NCEI: 195989, 195990, 195991.