Very warm, moist, and unstable air was in place during the afternoon of Wednesday, April 1st, as an upper level trough of low pressure traversed east across Southeast Oklahoma, Western Arkansas, and East Texas. Increased large scale forcing within this unstable environment ahead of the trough resulted in the development of scattered strong to severe thunderstorms over portions of Northeast…
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.
Very warm, moist, and unstable air was in place during the afternoon of Wednesday, April 1st, as an upper level trough of low pressure traversed east across Southeast Oklahoma, Western Arkansas, and East Texas. Increased large scale forcing within this unstable environment ahead of the trough resulted in the development of scattered strong to severe thunderstorms over portions of Northeast Texas, Southwest Arkansas, and North Central Louisiana during the mid-afternoon and evening hours, with several reports of trees being blown down across these areas. These storms weakened during the late evening with the loss of instability.
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 Apr 1, 3:21 PM CST, 54 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SHREVEPORT LA 421 PM CDT WED APR 1 2015 .DISCUSSION... THIS AFTERNOON AN UPPER SHORT WAVE TROUGH OF LOW PRESSURE WAS MOVING ACROSS THE AREA AND PRODUCING SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS. SEVERAL OTHER SMALLER SCALE DISTURBANCES WERE ALSO APPROACHING FROM THE WEST IN A DEVELOPING ZONAL FLOW PATTERN IN THE MIDDLE LEVELS. THIS ALONG WITH THE STRONG SOUTHERLY FLOW AROUND HIGH PRESSURE OFF TO THE EAST AND SURFACE LOW PRESSURE OVER THE PLAINS AND EASTERN ROCKIES WILL BE PROVIDING LOW LEVEL MOISTURE TO CONTINUE PROVIDING RAIN CHANCES. THE TIGHT PRESSURE GRADIENT BETWEEN THE HIGH AND LOW PRESSURE SYSTEMS WILL BE PROVIDING ELEVATED WINDS OVERNIGHT AND THROUGH THURSDAY...WHICH MAY REQUIRE A LAKE WIND ADVISORY. ANOTHER WAVE ALOFT WILL BE AMPLIFYING SOUTH SENDING A COLD FRONT IN FROM THE WEST ON FRIDAY WITH THE BEST CHANCES OF RAIN WITH THE FRONTAL BOUNDARY. AFTER ITS PASSAGE HIGH PRESSURE ON THE SURFACE AND ALOFT WILL PROVIDE A DRY START TO THE WEEKEND...BUT BY THE LATER PART OF THE WEEKEND THE RAPID FLOW WILL RETURN A SOUTHWEST FLOW PATTERN ALOFT ALONG WITH A STRONG SOUTHERLY FLOW ON THE SURFACE PROVIDING A WET PATTERN. ANOTHER COLD FRONT MOVES INTO THE AREA ON TUESDAY AND WILL BECOME NEARLY STATIONARY PROLONGING THE RAIN CHANCES THROUGH MID TO LATE WEEK. THIS BOUNDARY RETURNS NORTH AS A WARM FRONT IN LATE WEEK. /06/ && .PREV DISCUSSION... /ISSUED 150 PM CDT WED APR 1 2015/ AVIATION... FOR THE 01/18Z TAFS...A MIX OF MVFR AND LOW VFR CIGS OBSERVED THIS AFTERNOON WITH INCREASING SOUTH WINDS FROM 10-15 KTS AND PERIODIC HIGHER GUSTS NEAR 20 KTS. LOWER CLOUDS WILL CONTINUE TO LIFT INTO THE LOW VFR CATEGORY AS AN UPPER LEVEL DISTURBANCE TRACKING ACROSS CNTRL TX BRINGS IN SOME ADDITIONAL DENSE CIRRUS. SHWRS HAVE BEEN SLOWLY EXPANDING FROM CNTRL TX NORTH TO THE RED RIVER INTO SRN OK AND WILL GRADUALLY FILL IN OVER PARTS OF THE ARKLATEX LATER THIS AFTERNOON. SOME EMBEDDED TSTMS WILL ALSO BE POSSIBLE AS THIS UPPER DISTURBANCE LIFTS NE...BUT COVERAGE OF CONVECTION WILL BE ISOLD SO HAVE HANDLED MOST TAFS WITH VCSH/VCTS FOR NOW WITH DIMINISHING CHANCES OVERNIGHT AS LOW CLOUDS AND PATCHY FOG RETURN ONCE AGAIN. /19/ && .PRELIMINARY POINT TEMPS/POPS... SHV 65 81 68 80 / 20 20 10 40 MLU 64 83 66 81 / 20 30 10 50 DEQ 62 78 64 74 / 40 30 30 40 TXK 65 80 66 77 / 30 30 20 40 ELD 64 82 66 79 / 30 30 10 40 TYR 66 82 68 78 / 20 20 10 40 GGG 65 82 68 79 / 20 20 10 40 LFK 67 84 69 80 / 20 20 10 50 && .SHV WATCHES/WARNINGS/ADVISORIES... AR...NONE. LA...NONE. OK...NONE. TX...NONE. && 06
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SHREVEPORT LA 105 PM CDT WED APR 1 2015 ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-TXZ096- 097-108>112-124>126-136>138-149>153-165>167-021100- ANGELINA-BIENVILLE-BOSSIER-BOWIE-CADDO-CALDWELL-CAMP-CASS-CHEROKEE- CLAIBORNE-COLUMBIA-DE SOTO-FRANKLIN-GRANT-GREGG-HARRISON-HEMPSTEAD- HOWARD-JACKSON-LA SALLE-LAFAYETTE-LINCOLN-LITTLE RIVER-MARION- MCCURTAIN-MILLER-MORRIS-NACOGDOCHES-NATCHITOCHES-NEVADA-OUACHITA- PANOLA-RED RIVER LA-RED RIVER TX-RUSK-SABINE LA-SABINE TX- SAN AUGUSTINE-SEVIER-SHELBY-SMITH-TITUS-UNION AR-UNION LA-UPSHUR- WEBSTER-WINN-WOOD- 105 PM CDT WED APR 1 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL AND SOUTHWEST ARKANSAS...NORTHWEST AND NORTH CENTRAL LOUISIANA... SOUTHEAST OKLAHOMA...AND EAST AND NORTHEAST TEXAS. .DAY ONE...THIS AFTERNOON AND TONIGHT... ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE WITH A MARGINAL RISK OF SEVERE WEATHER POSSIBLE THIS AFTERNOON AND EVENING. HAIL AND DAMAGING WINDS WILL BE THE MAIN CONCERNS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY... ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE THROUGH FRIDAY...WITH COVERAGE INCREASING FOR THE LATE PART OF THE WORK WEEK. SATURDAY WILL LIKELY BE DRY...WITH SHOWERS AND THUNDERSTORMS RETURNING SUNDAY THROUGH TUESDAY. .SPOTTER INFORMATION STATEMENT... ACTIVATION OF EMERGENCY MANAGEMENT PERSONNEL...AMATEUR RADIO OPERATORS...AND STORM SPOTTERS MAY BE NEEDED THIS AFTERNOON. 06
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SHREVEPORT LA 445 PM CDT WED APR 1 2015 LAZ018-019-012230- NATCHITOCHES LA-WINN LA- 445 PM CDT WED APR 1 2015 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN WINN AND NORTHEASTERN NATCHITOCHES PARISHES UNTIL 530 PM CDT... AT 444 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 7 MILES SOUTHEAST OF CAMPTI...OR 8 MILES NORTHEAST OF NATCHITOCHES... MOVING NORTHEAST AT 35 MPH. WINDS OF 40 TO 50 MPH AND PEA SIZE HAIL WILL BE POSSIBLE WITH THIS STORM. LOCATIONS IMPACTED INCLUDE... NATCHITOCHES...CAMPTI...CLARENCE...GOLDONNA...DODSON...CALVIN...GRAND ECORE...ST. MAURICE...CLEAR LAKE...CRESTON...BLACK LAKE AND CHESTNUT. THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE. LAT...LON 3171 9300 3185 9318 3214 9303 3214 9247 TIME...MOT...LOC 2144Z 223DEG 32KT 3185 9300 15
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
503 PM CDT WED APR 1 2015
ARZ050-051-012230-
HOWARD AR-SEVIER AR-
503 PM CDT WED APR 1 2015
...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN HOWARD AND NORTH CENTRAL
SEVIER COUNTIES UNTIL 530 PM CDT...
AT 503 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
ATHENS...OR NEAR UMPIRE...MOVING NORTHEAST AT 35 MPH.
DIME SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THIS STORM.
LOCATIONS IMPACTED INCLUDE...
UMPIRE...ATHENS AND BURG.
LAT...LON 3435 9394 3427 9394 3426 9392 3419 9393
3418 9386 3411 9423 3427 9425 3435 9425
TIME...MOT...LOC 2203Z 234DEG 29KT 3429 9413
24The Ft Polk radar (KPOE), 90 km away, was scanning. The volume nearest the first event began at 22:12 UTC.
4 thunderstorm wind. Local standard time, as filed.
A tree was downed on Tom Carson Road just west southwest of Calvin, Louisiana.
A tree was downed on Hwy. 501 in Calvin, Louisiana.
A tree was down on Fire Tower Road in Jonesboro, Louisiana.
A tree was downed on Gladeway Road east of Jonesboro, Louisiana.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Louisiana in 2015Every state in 2015This day in weather historyWarnings in Louisiana, April 2015
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: 558088, 558089, 558091, 558090.