Scattered showers and thunderstorms developed during the afternoon of June 12th, as a warm, very moist, and unstable air mass was in place ahead of an upper level low pressure system over Southern Oklahoma and attendant trough axis that trailed the low across Central Texas. This disturbance enhanced the strength of the sea breeze over Southeast Texas and South Louisiana, with multiple outflow…
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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 SHV wrote it up.
Scattered showers and thunderstorms developed during the afternoon of June 12th, as a warm, very moist, and unstable air mass was in place ahead of an upper level low pressure system over Southern Oklahoma and attendant trough axis that trailed the low across Central Texas. This disturbance enhanced the strength of the sea breeze over Southeast Texas and South Louisiana, with multiple outflow boundaries focusing new shower and thunderstorm development throughout the day as they spread north over much of East Texas and North Louisiana. Meanwhile, the upper level low pressure system to the west focused scattered shower and thunderstorm development over extreme Northeast Texas, Southeast Oklahoma, and Southwest Arkansas during the afternoon and evening. Isolated strong to severe thunderstorms developed over McCurtain County Oklahoma, extreme Northeast Texas, and Northwest Louisiana, with damaging winds resulting in downed trees and power lines. Locally heavy rainfall also fell from these storms, with reports of flash flooding through Ouachita Parish in North Central Louisiana as widespread 1.5 to in excess of 3 inches of rain fell within a short period of time. These showers and thunderstorms diminished during the evening, before redeveloping overnight and into June 13th as the upper level lower pressure system and trailing trough entered the region.
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 Jun 12, 2:59 PM CST, 1 hour 51 minutes earlier.
Area Forecast Discussion National Weather Service Shreveport LA 359 PM CDT SUN JUN 12 2016 .DISCUSSION... Extensive convection associated with an enhanced seabreeze from SE TX/S LA continues to build NNE this afternoon...ahead of broadening upper level trough extending from Ern OK SW into Cntrl TX. In fact...the visible satellite loop and mosaic radar imagery depict a well-defined MCV between ABI and SEP...which has tapped a strong instability axis to its E near and N of the DFW Metroplex. Meanwhile...the latest sfc analysis still reveals a W to E sfc bndry from this morning/s MCS over OK still residing along the Red River bordering TX/OK...which extends E along the river to just NW of TXK. Already seeing sct convection develop this afternoon along this convergence axis over McCurtain County OK and adjacent SW AR...with the expectation that this convection will increase late this afternoon/evening as the weak upper trough/attendant MCV continue to drift E into the region. Assuming the convection associated with the enhanced seabreeze over Deep E TX doesn/t build N into extreme NE TX this evening...ample instability should remain across the wrn sections of E TX...with a 15-20kt swrly flow level flow helping to maintain the theta-e advection and subtle diffulence aloft over these areas beneath the trough contributing to additional development overnight. Meanwhile...the convection over the Srn zones this afternoon should diminish by mid-evening with the loss of heating and help to stabilize the air mass in place. Given these factors and the ongoing convection...have increased pops to likely across the Wrn sections of E TX tonight...as well as SE OK/adjacent SW AR. Have also raised pops to mid chance farther E to accomodate the early evening convection...although some sct convection may re-develop as far E as Wrn LA/SW AR as the weak troughing aloft enters the region. As was the case this morning over Srn OK...convection may be ongoing near the trough axis/remnant MCV Monday morning...gradually spreading E during the day. Have increased pops to likely for the Ern 2/3rd of the area...with drier air aloft behind the trough helping to gradually taper the convection from W to E across SE OK/E TX. Given PW/s between 2-2.2 inches and the weak deep lyr shear in place tonight through Monday...the slow movement and the potential for redevelopment over the same areas may yield in localized heavy rainfall amounts...with the greatest potential possibly over portions of E TX/SE OK/adjacent SW AR late tonight. However...the heavy rainfall amounts will likey be focused on where any mesoscale bndrys set up from the evening convection. Should finally see the convection diminish Monday afternoon/evening as the trough axis drifts into Cntrl AR/Cntrl half of LA...but did maintain low chance pops for these areas Monday night. Again...convective regeneration may occur near the trough axis Tuesday morning...with possibly another enhanced seabreeze resulting in widely sct convection affecting Deep E TX/Ncntrl LA by afternoon. Kept chance pops going for these areas...before the trough exits the region ahead of upper level ridging that will expand NE to the MS Valley Wednesday. Can/t rule out isolated convection developing during the afternoon Wednesday mainly over SW AR/N LA/Deep E TX where the ridge will be weakest...but dropped pops for Thursday as the center of the 850-700mb ridge becomes centered over the region. The increased subsidence will result in hot and humid conditions...with heat indices likely ranging from 100-105 degrees through Friday. The medium range progs do suggest a weak sfc trough backdooring SW around the ern periphery of the ridge as it begins to amplify nwd into the Plains...although low level moisture availability remains questionable. Still kept slight chance pops going Friday/Friday night although the GFS/ECMWF have trended drier this run...but could be dealing with compressional warming with the backdoor sfc trough passage Friday. Did keep temps near/slightly above normal next weekend...with dry conditions expected through the remainder of the extended. Prelims to follow below... 15 && .PREV DISCUSSION... /issued 1240 PM CDT SUN JUN 12 2016/ AVIATION... For the 12/18z TAFs, two areas of isolated to widely scattered convection have developed. The first area is generally along and north of I-30, and the second is located from KLFK eastward into Central Louisiana. Additional convection may develop nearly anywhere in the area, although KTYR appears to have the lowest chances of rain. Most of the convection will diminish after sunset, but an additional complex of showers and thunderstorms is expected to develop across Texas and move into East Texas after midnight. Thunderstorms will likely spread across much of the area once again during the daytime hours of Monday. Cigs will continue to vary across the area mainly between MVFR and low-end VFR. Some patchy fog could lead to IFR conditions at KLFK after 13/06z. /09/ && .PRELIMINARY POINT TEMPS/POPS... SHV 75 88 74 92 / 40 60 20 20 MLU 74 88 73 91 / 30 60 30 30 DEQ 73 88 72 91 / 60 60 20 20 TXK 74 88 74 91 / 50 60 20 20 ELD 74 87 73 91 / 30 60 30 30 TYR 74 89 75 91 / 60 50 10 20 GGG 74 88 74 91 / 60 50 20 20 LFK 75 89 75 92 / 50 50 20 30 && .SHV Watches/Warnings/Advisories... AR...None. LA...None. OK...None. TX...None. && 15
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SHREVEPORT LA 1145 AM CDT SUN JUN 12 2016 ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077- TXZ096-097-108>112-124>126-136>138-149>153-165>167-131100- SEVIER-HOWARD-LITTLE RIVER-HEMPSTEAD-NEVADA-MILLER-LAFAYETTE- COLUMBIA-UNION-CADDO-BOSSIER-WEBSTER-CLAIBORNE-LINCOLN-DE SOTO- RED RIVER-BIENVILLE-JACKSON-OUACHITA-SABINE-NATCHITOCHES-WINN- GRANT-CALDWELL-LA SALLE-MCCURTAIN-BOWIE-FRANKLIN-TITUS-CAMP- MORRIS-CASS-WOOD-UPSHUR-MARION-SMITH-GREGG-HARRISON-CHEROKEE-RUSK- PANOLA-NACOGDOCHES-SHELBY-ANGELINA-SAN AUGUSTINE- 1145 AM CDT SUN JUN 12 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL ARKANSAS...SOUTHWEST ARKANSAS...NORTH CENTRAL LOUISIANA... NORTHWEST LOUISIANA...SOUTHEAST OKLAHOMA...EAST TEXAS AND NORTHEAST TEXAS. .DAY ONE...THIS AFTERNOON AND TONIGHT... SCATTERED SHOWERS AND THUNDERSTORMS WILL DEVELOP THIS AFTERNOON OVER MUCH OF THE REGION...WITHIN A HOT...HUMID...AND UNSTABLE AIR MASS IN PLACE...AND AHEAD OF AN UPPER LEVEL DISTURBANCE THAT WILL DRIFT EAST SOUTHEAST ACROSS EASTERN OKLAHOMA AND INTO WESTERN ARKANSAS AND EAST TEXAS THROUGH TONIGHT. BRIEF HEAVY RAINFALL AND LOCALLY GUSTY WINDS WILL BE POSSIBLE IN THE STRONGER STORMS THIS AFTERNOON...WITH THIS THREAT POSSIBLY EXTENDING INTO TONIGHT OVER EAST TEXAS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY... SCATTERED SHOWERS AND THUNDERSTORMS WILL REMAIN POSSIBLE OVER MUCH OF THE AREA MONDAY...AS THIS UPPER LEVEL DISTURBANCE SLOWLY DRIFTS SOUTHEAST OVER THE REGION. BRIEF HEAVY RAINFALL AND LOCALLY GUSTY WINDS WILL BE POSSIBLE IN THE STRONGER STORMS...BUT SHOULD DIMINISH MONDAY NIGHT WITH THE LOSS OF HEATING. SCATTERED SHOWERS AND THUNDERSTORMS WILL REMAIN POSSIBLE OVER SOUTHCENTRAL ARKANSAS AND NORTH LOUISIANA TUESDAY AS THIS DISTURBANCE LINGERS OVER THESE AREAS...BUT RAIN CHANCES WILL DIMINISH WEDNESDAY THROUGH SATURDAY AS AN UPPER LEVEL RIDGE OF HIGH PRESSURE BUILDS EAST ACROSS THE SOUTHERN PLAINS AND INTO THE FOUR STATE REGION. THIS WILL RESULT IN HOT AND HUMID CONDITIONS...WITH HEAT INDICES RANGING FROM 100 TO 105 DEGREES EACH DAY. .SPOTTER INFORMATION STATEMENT... ACTIVATION OF EMERGENCY MANAGERS...SKYWARN NETWORKS...AND AMATEUR RADIO OPERATORS...SHOULD NOT BE NEEDED THIS AFTERNOON OR TONIGHT. 15
The Shreveport radar (KSHV), 27 km away, was scanning. The volume nearest the first event began at 22:48 UTC.
2 flood, 1 thunderstorm wind. Local standard time, as filed.
Two trees were downed on Hwy. 527 with large limbs also downed near Haughton, Louisiana.
Roads flooded and numerous vehicles stranded throughout the city.
Water was covering Griggs road in Calhoun, Louisiana.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Louisiana in 2016Every state in 2016This day in weather historyWarnings in Louisiana, June 2016
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: 629978, 629983, 629985.