Scattered showers and thunderstorms developed over Southeast Texas during the mid and late afternoon hours, along the tail end of an upper trough axis that extended from Western Arkansas across Western Louisiana and extreme Eastern Texas. Afternoon temperatures in the lower 90s within the moist air mass contributed to moderate instability developing as these storms shifted north-northeast, with…
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The episode as NWS SHV wrote it up.
Scattered showers and thunderstorms developed over Southeast Texas during the mid and late afternoon hours, along the tail end of an upper trough axis that extended from Western Arkansas across Western Louisiana and extreme Eastern Texas. Afternoon temperatures in the lower 90s within the moist air mass contributed to moderate instability developing as these storms shifted north-northeast, with an isolated severe thunderstorm developing as it moved along the Cherokee/Angelina County Texas line. This storm produced damaging winds which downed power lines just southeast of Wells before quickly weakening as it moved into Southwest Nacogdoches County.
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 20, 5:46 PM CST, 22 minutes earlier.
Area Forecast Discussion National Weather Service Shreveport LA 646 PM CDT Sat Jun 20 2020 .AVIATION... For the ArkLaTex terminals, a short wave upper low has a line of shwrs/TS stretching from b/t KELD/KMLU and down to near KLFK. This is movg NE along the bow. These linger for the p.m. while decreasing in intensity after sunset. Overnight we will see some MVFR cigs at several sites as another piece of energy rotates in overhead with scat shwrs/TS before daybreak and perhaps lingering from the morning into the afternoon before moving on. Meanwhile, winds will keep S/SE5KT overnight and S/SW5-15KT on Sunday. /24/ && .PREV DISCUSSION... /issued 256 PM CDT Sat Jun 20 2020/ SHORT TERM.../Tonight through Sunday Night/ Additional showers and isolated thunderstorms have develop across the region this afternoon as a shortwave trough moves over the ArkLaTex. All convection should diminish late this evening, as instability decreases behind the departing shortwave. More convection is expected to develop along a frontal boundary to the northwest of the region overnight. Models continue to suggest that this activity will hold together and move south to near the I-30 corridor and possible as far south as the I-20 corridor on Sunday morning. Another disturbance is expected to move across the region tomorrow afternoon/evening keeping rain chances in the forecast during the remainder of the day. Most of the convection should diminish again by late Sunday evening./20/ LONG TERM.../Monday through Saturday Night/ To start the work week, we will continue moving into a wetter pattern across the Four State Region as a longwave trough will dominate much of the Plains with ridging noted across the Southwest CONUS. A weak shear axis will remain anchored somewhere across S/SE TX with this axis oriented southwest to northeast into our southern zones. This axis will waffle back north and south through much of the upcoming work week as several disturbances move out of the longwave trough and into our region from the northwest in what will be a prolonged period of northwest flow aloft. Typically in this kind of upper level flow, we will see disturbances develop during the late afternoon and evening hours across the Plains with these disturbances being fed by a low level jet helping to sustain and intensify the disturbances during the overnight hours. These disturbances will propagate south and east, approaching the Middle Red River Valley of Northeast Texas, Southeast Oklahoma and Southwest Arkansas during the predawn hours before we begin to lose coverage after sunrise. Further southeast propagation and development of additional convection will greatly depend upon daytime heating and any residual outflow boundaries generated from the parent disturbance earlier in the day. All this to say that this weather pattern will be firmly entrenched across our region through much of next week. There are some indications that the remnant shear axis across SE or Deep S TX will try to lift out northward into our region sometime late in the work week or early next weekend which would keep rain chances in the forecast at least through the first half of next weekend. The upper ridge which will have been displaced well to our west this upcoming work week appears to migrate eastward towards our region just beyond the 7-Day forecast period which would bring and end to our wet pattern with the heat returning in earnest. Until then, enjoy the rain chances and milder temperatures this upcoming work week. /13/ && .PRELIMINARY POINT TEMPS/POPS... SHV 73 90 74 91 / 20 40 10 40 MLU 72 91 73 92 / 20 40 10 50 DEQ 70 87 70 90 / 30 60 10 30 TXK 72 87 72 89 / 20 50 10 30 ELD 70 88 72 90 / 20 50 10 40 TYR 72 90 74 92 / 20 20 10 30 GGG 72 91 72 91 / 20 30 10 30 LFK 72 91 74 91 / 20 40 10 50 && .SHV WATCHES/WARNINGS/ADVISORIES... AR...None. LA...None. OK...None. TX...None. && 24/20/13
Hazardous Weather Outlook National Weather Service Shreveport LA 519 AM CDT Sat Jun 20 2020 ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077- TXZ096-097-108>112-124>126-136>138-149>153-165>167-211030- 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- 519 AM CDT Sat Jun 20 2020 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...Today and Tonight... Isolated to scattered showers and thunderstorms will be possible today and this evening. While severe weather is not expected, gusty winds and heavy downpours cannot be ruled out in the stronger storms. .DAYS TWO THROUGH SEVEN...Sunday through Friday... Coverage of showers and thunderstorms will increase through all of next week, as a series of upper level disturbances and a cold front move across the region. Although widespread severe weather is not expected, an isolated damaging wind gust or two cannot be ruled out. .SPOTTER INFORMATION STATEMENT... Activation of emergency management personnel...amateur radio operators...and storm spotters will not be needed tonight. 12
Special Weather Statement
National Weather Service Shreveport LA
624 PM CDT Sat Jun 20 2020
LAZ001-002-010-011-210015-
De Soto LA-Bossier LA-Red River LA-Caddo LA-
624 PM CDT Sat Jun 20 2020
...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL DE SOTO...
NORTHWESTERN RED RIVER...SOUTHEASTERN CADDO AND SOUTH CENTRAL BOSSIER
PARISHES UNTIL 715 PM CDT...
At 624 PM CDT, Doppler radar was tracking a strong thunderstorm 8
miles southeast of Stonewall, or 10 miles north of Mansfield, moving
northeast at 20 mph.
Penny size hail and winds in excess of 40 mph will be possible with
this storm.
Locations impacted include...
Elm Grove, Ninock, Frierson, Mc Dade, Kingston and Caspiana.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This storm 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 3209 9374 3219 9381 3239 9355 3235 9346
3222 9343
TIME...MOT...LOC 2323Z 234DEG 18KT 3218 9372
15Special Weather Statement
National Weather Service Shreveport LA
647 PM CDT Sat Jun 20 2020
TXZ149-152-165-210030-
Cherokee TX-Angelina TX-Nacogdoches TX-
647 PM CDT Sat Jun 20 2020
...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL NACOGDOCHES...
NORTHWESTERN ANGELINA AND SOUTHEASTERN CHEROKEE COUNTIES UNTIL 730 PM
CDT...
At 647 PM CDT, Doppler radar was tracking a strong thunderstorm 8
miles southwest of Wells, or 11 miles north of Apple Springs, moving
northeast at 20 mph.
Penny size hail and winds in excess of 40 mph will be possible with
this storm.
Locations impacted include...
Wells, Pollok, Forest and Central.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This storm 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 3135 9496 3136 9495 3137 9496 3138 9495
3141 9498 3142 9500 3144 9501 3144 9500
3145 9505 3147 9506 3166 9492 3148 9469
3134 9494
TIME...MOT...LOC 2346Z 223DEG 18KT 3139 9503
15The Shreveport radar (KSHV), 150 km away, was scanning. The volume nearest the first event began at 00:10 UTC.
1 thunderstorm wind. Local standard time, as filed.
Power lines were downed on County Road 2 just southeast of Wells.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2020Every state in 2020This day in weather historyWarnings in Texas, June 2020
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: 887883.