Scattered showers and thunderstorms developed throughout the day on May 25th across Northeast Texas, Southwest Arkansas, and North Louisiana, along an outflow boundary that had developed earlier in the morning from a complex of showers and thunderstorms over Southeast Oklahoma. Daytime heating and ample low level moisture contributed to a moderately unstable air mass during the afternoon, with…
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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 throughout the day on May 25th across Northeast Texas, Southwest Arkansas, and North Louisiana, along an outflow boundary that had developed earlier in the morning from a complex of showers and thunderstorms over Southeast Oklahoma. Daytime heating and ample low level moisture contributed to a moderately unstable air mass during the afternoon, with some of these storms briefly becoming severe across portions of Northeast Texas and Northwest Louisiana. Damaging winds from localized microbursts occurred at Barksdale Air Force Base as well as the Cullen and Springhill communities in Northwest Louisiana, where trees were blown down and large limbs were snapped.
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 May 25, 11:33 AM CST, 2 hours 19 minutes earlier.
Area Forecast Discussion National Weather Service Shreveport LA 1233 PM CDT Fri May 25 2018 .UPDATE... Have increased POPs to likely category across southeast OK, extreme northeast TX and southwest AR during the afternoon hours, as the line of storms continued to progress southeastward towards the aforementioned areas. This line of storms could pose a threat for gusty winds, brief moderate rainfall and small hail thus caution should be exercised. && .PREV DISCUSSION... /issued 1201 PM CDT Fri May 25 2018/ AVIATION... A complex of -SHRA/-TSRA well northwest of the terminals early this afternoon, but continued to progress southeastward whilst additional development occurs along its outflow boundary. Confidence is high enough to insert a TEMPO group for this precipitation activity with VCTS elsewhere as isolated -TSRA /which we have been seeing for the last several days/ is certainly plausible. Will of course amend as necessary. Computer models hint at a waning trend near sunset with light and variable /and for some terminals calm/ conditions will occur overnight. Can not rule out patchy fog overnight for some of the TAF sites such as klfk, kggg, ktyr and kmlu, with hints of scattered MVFR-IFR CIGS. Tomorrow, a similar scenario may be shaping up where another complex of storms will moving southeast from central OK those posing a threat for precipitation later in the afternoon. PREV DISCUSSION... /issued 349 AM CDT Fri May 25 2018/ SHORT TERM.../Today through Saturday/ Convection currently ongoing across Northern Oklahoma and Southern Kansas will be steered southeast towards our area today by weak northwesterly flow aloft. Most of the model guidance dissipates this complex just before reaching McCurtain County early this afternoon. However, a residual outflow boundary from this activity combined with a weak trough axis moving across the region today could lead to increased convective coverage during the mid to late afternoon, especially east of a line from Mount Vernon TX to Lufkin TX. Thunderstorm activity should once again decrease during the evening hours with the loss of daytime heating. A very similar forecast is expected for Saturday. Many of the models continue to suggest another convective complex will develop across Oklahoma, and this complex may affect portions of Southeast Oklahoma and Northeast Texas close to sunrise Saturday morning. While the steering flow definitely supports the possibility, most of the models also depict this potential complex weakening as it approaches. Given this uncertainty, only slight chance PoPs were maintained. However, more diurnally driven convection is expected during the day Saturday. Convective coverage may be more concentrated over portions of Southern Arkansas and Northern Louisiana due to a building ridge axis over the Southern High Plains. Otherwise, persistence remains the general rule in terms of temperatures. Most locations will likely warm to near or just over 90 degrees F. CN LONG TERM.../Saturday night through Thursday/ A ridge of high pressure will remain over the central part of the US through the weekend, allowing the potential tropical or subtropical system to lift towards the Gulf coast this holiday weekend. Although some differences are still occurring in the models with landfall placement, they are in pretty good agreement showing landfall taking place some time late Sunday into Monday. If the current models hold, this will place the ArkLaTex on the back side of the subtropical or tropical low and more under the influence of the ridge, with north or northeasterly flow aloft. As a result, the threat of showers and thunderstorms will likely be limited to the northern and eastern portion of the ArkLaTex on Sunday and only across the eastern half of Louisiana on Monday. The ridge will then really build over the region during the work week, with dry conditions prevailing through Friday. The main story for Tuesday through Friday will be with the unseasonably hot and miserable conditions developing. In fact, temperatures will likely be pushing into the mid and upper 90s for the end of May and the first part of June. Looking at our records for this time of year, it depends on the locations, but most are at or above the 100 degree mark. Therefore, do not believe we will be hitting records at this time, but a few locations could be flirting with potential records these days if their records are in the upper 90s. Afternoon heat indices by Wednesday will also increase to above the 100 degree mark, making the heat feel even more oppressive. It will be imperative to stay hydrated and find a cool these days. Palmer && .PRELIMINARY POINT TEMPS/POPS... SHV 71 93 73 94 / 30 30 20 30 MLU 71 92 70 92 / 30 40 20 30 DEQ 69 93 69 93 / 30 20 20 10 TXK 72 93 71 93 / 30 30 20 20 ELD 70 90 69 92 / 30 40 20 30 TYR 71 93 73 94 / 10 20 10 10 GGG 71 93 71 93 / 10 20 10 20 LFK 71 93 71 94 / 10 20 10 20 && .SHV WATCHES/WARNINGS/ADVISORIES... AR...None. LA...None. OK...None. TX...None. && 29/09/28
Hazardous Weather Outlook National Weather Service Shreveport LA 126 PM CDT Fri May 25 2018 ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077- TXZ096-097-108>112-124>126-136>138-149>153-165>167-261830- 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- 126 PM CDT Fri May 25 2018 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... Isolated to scattered thunderstorms will be possible this afternoon into tonight across the entire Four State Region. The best chances for thunderstorms will be late this afternoon during peak daytime heating, but storms may linger longer into the evening as a remnant MCS continues to move through the region. There is a marginal risk of severe thunderstorms possible late this afternoon and evening east of a line from Mount Vernon TX to Lufkin TX, with damaging winds and large hail being the primary threats. Otherwise, expect brief heavy downpours, gusty winds, and frequent cloud to ground lightning. While an isolated storm could become severe elsewhere, widespread severe thunderstorms are not expected. .DAYS TWO THROUGH SEVEN...Saturday through Thursday... Isolated to scattered thunderstorms will be possible each day from Saturday through Monday. The greatest thunderstorm activity is expected each afternoon during peak daytime heating, and any storms that develop will gradually dissipate during the evening. Brief heavy downpours, gusty winds, and frequent cloud to ground lightning will be possible, but widespread severe weather is not expected. .SPOTTER INFORMATION STATEMENT... Activation of emergency management personnel, amateur radio operators, and storm spotters may be needed later this afternoon into tonight.
Special Weather Statement
National Weather Service Shreveport LA
1237 PM CDT FRI MAY 25 2018
OKZ077-251830-
McCurtain OK-
1237 PM CDT FRI MAY 25 2018
...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN MCCURTAIN COUNTY UNTIL
130 PM CDT...
At 1236 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 8 miles west of Octavia to Rattan. Movement was
southeast at 10 mph.
Dime size hail and wind gusts up to 50 mph will be possible with
these storms.
Locations impacted include...
Wright City, Valliant, Millerton, Plunketville, Rufe, Smithville,
Watson, Battiest, Pickens, Mount Herman, Sherwood, Glover, Slim,
Bethel and Ringold.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
&&
LAT...LON 3451 9450 3450 9446 3436 9446 3391 9513
3393 9512 3394 9516 3423 9515 3425 9505
3450 9505
TIME...MOT...LOC 1736Z 313DEG 11KT 3454 9486 3418 9540
35Special Weather Statement National Weather Service Shreveport LA 229 PM CDT FRI MAY 25 2018 ARZ050-051-059-OKZ077-TXZ096-097-109-111-252015- Howard AR-Sevier AR-Little River AR-McCurtain OK-Bowie TX- Red River TX-Morris TX-Titus TX- 229 PM CDT FRI MAY 25 2018 ...SIGNIFICANT WEATHER ADVISORY FOR WESTERN LITTLE RIVER...CENTRAL SEVIER...CENTRAL HOWARD...SOUTHEASTERN MCCURTAIN...NORTHWESTERN BOWIE...NORTHWESTERN MORRIS...NORTHEASTERN TITUS AND SOUTHEASTERN RED RIVER COUNTIES UNTIL 315 PM CDT... At 229 PM CDT, Doppler radar was tracking strong thunderstorms along a line extending from 7 miles west of Horatio to 6 miles northwest of Boxelder. Movement was southeast at 15 mph. Dime size hail and wind gusts up to 50 mph will be possible with these storms. Locations impacted include... Horatio, Foreman, Boxelder, De Kalb, Lockesburg, Winthrop, Ben Lomond, Us 259 And I 30 Intersection, Arkinda, Dalby Springs, Avery, Oak Grove, Annona, Haworth, Moon, Cerrogordo, Beaverdams, Goodlake, Lydia and Goodwater. PRECAUTIONARY/PREPAREDNESS ACTIONS... These storms may intensify, so be certain to monitor local radio stations and available television stations for additional information and possible warnings from the National Weather Service. && LAT...LON 3395 9399 3321 9477 3351 9508 3405 9448 TIME...MOT...LOC 1929Z 297DEG 11KT 3398 9447 3354 9495 35
The Shreveport radar (KSHV), 17 km away, was scanning. The volume nearest the first event began at 19:52 UTC.
3 thunderstorm wind. Local standard time, as filed.
A microburst produced a peak wind gust of 62 mph at Barksdale Air Force Base in Bossier City. Large tree limbs, some over 5 inches in diameter, were snapped across portions of the base.
A large tree was blown down onto a house in Downtown Cullen.
Trees were blown down across portions of Springhill.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Louisiana in 2018Every state in 2018This day in weather historyWarnings in Louisiana, May 2018
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: 747032, 747033, 747034.