Despite relatively weak forcing for ascent with a cold front still well upstream of Southeast Oklahoma, a few discrete thunderstorms developed during the late afternoon on April 27th across parts of McCurtain County. As the environment was only marginally favorable to sustain this convection for a prolonged period, only a single report of hail ranging from dime to nickel size was recorded near…
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The episode as NWS SHV wrote it up.
Despite relatively weak forcing for ascent with a cold front still well upstream of Southeast Oklahoma, a few discrete thunderstorms developed during the late afternoon on April 27th across parts of McCurtain County. As the environment was only marginally favorable to sustain this convection for a prolonged period, only a single report of hail ranging from dime to nickel size was recorded near the Felker community between Valliant and Wright City.
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 27, 1:51 PM CST, 3 hours 45 minutes earlier. Its key messages:
Area Forecast Discussion...CORRECTED National Weather Service Shreveport LA 251 PM CDT Mon Apr 27 2026 ...New DISCUSSION, AVIATION, SPOTTER INFORMATION STATEMENT... .KEY MESSAGES... Issued at 1249 PM CDT Mon Apr 27 2026 - Slight Risk for severe thunderstorms now from Tyler to near Monroe in the SPC Day One through the overnight hours. - An Enhanced Risk for more severe storms in our Four-State area Tuesday as the cold frontal forcing arrives overnight. - The cut-off low offshore of California now will be racing eastward, lifting some of the best rain totals over our freshly arrived air mass, that will bring more widespread heavy rains. && .DISCUSSION... Issued at 1249 PM CDT Mon Apr 27 2026 Mostly cloudy and not much sun yet, but more perhaps in the next few hours of peak heating. Currently, low to mid 80s abound in the gusty SW wind. Our dew points are loaded for bear in the lower to a few mid 70s, while our sounding remains very capped with the clouds in place. There is a short wave phasing over the plains under the closed low over the arrow head of MN. It's subtle, but the SW flow is deep and this phasing will boost forcing aloft with a speed max pouring into the traveling short wave base for the remainder of today. The SPC has updated their day one with a deeper dip of the Slight Risk contour over more of our area, now well south of I-20 from Tyler to Gary City and Longstreet, to Hall Summit and Ruston. Monroe remains in the Marginal Risk. Once the cap breaks, there is loads of dry air aloft above the inversion at 5.6kft. So while the rain is welcomed, the threat for large to very large hail and some wind are quite valid considering the timing using all the heating we can muster and potentially be sustained overnight with increased warmth and moisture off the Gulf of America as the dry line resets back west. So lots to watch out for this evening as "tail end Charlie" energy swings ENE down much of our I-20. And then perhaps even more so on Tuesday with the added frontal forcing areawide, thus making for another big nocturnal push scenario. The WPC also has Tuesday being potentially much wetter, upping their Marginal Risk for excessive amounts tonight, to a Slight Risk for all of our I-20 corridor on the day 2 ERO. Our surface winds will finally shift to N early on Wednesday and usher in cooler and much more stable air bringing an end to any further threats for a respite. Mid to late week will see our muggy 80s become comfy 70s, and then the clouds and more so the cold front, that will drop down a nice chill behind the cut-off swinging through the pattern on Friday with 60s for highs this weekend. The week ending rainfall will see more elevation in the storm base and less rooted in the muggy near surface air, which will all arise with this final run of storms. Both with with less severity and more beneficial widespread (winter-like overrunning) rainfall for the new month to totals. /24/ && .AVIATION... (18Z TAFS) Issued at 1249 PM CDT Mon Apr 27 2026 For the 27/18Z TAF period... High based MVFR cigs continue to hang tough across portions of Srn AR/N LA and adjacent sections of E TX, but should become VFR by mid- afternoon, and persist through at least mid to late evening before additional MVFR cigs develop over portions of E TX/Wrn LA/SW AR and quickly spread NNE across the remainder of the region overnight. However, isolated to scattered convection may develop by late afternoon/early evening over portions of NE TX/SE OK (with isolated convection development possible farther E across ECntrl LA by mid/late afternoon), which may spread E generally along and N of the I-20 corridor through the evening/overnight hours. For now, have added VCTS mention for all but the TYR/LFK terminals, with the expectation that the convection will diminish late. Depending on timing and longevity of the convection, this could delay the onset or development of the MVFR cigs, with much of the region expected to become impacted by 12Z Tuesday, persisting through much of the morning before lifting. Additional convection may develop and spread E through the region Tuesday afternoon, just beyond the end of this TAF period. SSW winds 10-15kts with gusts to 25kts this afternoon will diminish to 5-10kts after 00Z. /15/ && .SPOTTER INFORMATION STATEMENT... Issued at 1249 PM CDT Mon Apr 27 2026 Spotter activation may be needed this afternoon through tonight. && .PRELIMINARY POINT TEMPS/POPS... SHV 72 88 69 79 / 40 60 60 50 MLU 71 89 68 82 / 40 60 70 60 DEQ 65 80 58 74 / 40 70 70 30 TXK 70 85 65 76 / 60 80 90 40 ELD 66 85 63 76 / 50 60 80 50 TYR 73 89 68 78 / 20 50 60 40 GGG 72 89 68 78 / 30 50 60 50 LFK 72 92 70 84 / 20 20 20 40 && .SHV WATCHES/WARNINGS/ADVISORIES... AR...None. LA...None. OK...None. TX...None. && DISCUSSION...24 AVIATION...15
Preliminary Local Storm Report
National Weather Service Shreveport LA
230 PM CDT Mon Apr 27 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0423 AM Hail 2 NNE Grambling 32.56N 92.69W
04/26/2026 E1.00 Inch Lincoln LA Public
Estimated hail of at least quarter size a
little north of Interstate 20 between
Grambling and Ruston.
&&
20Special Weather Statement
National Weather Service Shreveport LA
616 PM CDT Mon Apr 27 2026
OKZ077-TXZ096-272345-
McCurtain OK-Red River TX-
616 PM CDT Mon Apr 27 2026
...A STRONG THUNDERSTORM WILL IMPACT NORTHWESTERN RED RIVER AND WEST
CENTRAL MCCURTAIN COUNTIES UNTIL 645 PM CDT...
At 616 PM CDT, Doppler radar was tracking a strong thunderstorm 8
miles northwest of Manchester, or 24 miles northwest of Clarksville,
moving northeast at 25 mph.
HAZARD...Wind gusts up to 40 mph and pea size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Valliant, Millerton, Garvin, Redland, Farmers Hill, Kiomatia, Slim
and Kanawha.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Monitor the weather situation closely and be alert for threatening
weather conditions.
&&
LAT...LON 3381 9531 3388 9531 3387 9529 3388 9528
3390 9529 3391 9527 3389 9527 3389 9526
3391 9525 3393 9525 3395 9523 3396 9523
3395 9519 3394 9516 3405 9516 3410 9507
3389 9489
TIME...MOT...LOC 2315Z 240DEG 23KT 3392 9523
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH
20The Western Arkansas radar (KSRX), 154 km away, was scanning. The volume nearest the first event began at 23:34 UTC.
1 hail. Local standard time, as filed.
Hail ranging from dime to nickel size reported near the Felker community between Valliant and Wright City.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Oklahoma in 2026Every state in 2026This day in weather historyWarnings in Oklahoma, April 2026
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: 1332360.