During the afternoon and evening of June 15th, an upper-level disturbance triggered a cluster of thunderstorms along a stationary front boundary around the Texas and Oklahoma border. These storms intensified and grew upscale into an intense mesoscale convective system (MCS) as they moved east-southeast along an axis of increased moisture and strong instability that extended toward the Central…
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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 JAN wrote it up.
During the afternoon and evening of June 15th, an upper-level disturbance triggered a cluster of thunderstorms along a stationary front boundary around the Texas and Oklahoma border. These storms intensified and grew upscale into an intense mesoscale convective system (MCS) as they moved east-southeast along an axis of increased moisture and strong instability that extended toward the Central Gulf Coast. As the MCS moved into central Louisiana with a bow and arrow structure, it exhibited an unusually intense rear-inflow jet with velocities as high as 85 to 90 mph between 10,000 feet to 15,000 feet above the ground, as viewed by the KDGX NEXRAD site. A wide swath of significant severe wind gusts at the surface caused widespread wind damage including snapped and uprooted trees, downed tree limbs and power lines, and damage to homes and other structures. Surveys of the wind damage indicated that peak wind gusts of 90 to 100 mph likely occurred in the most intense portions of the line. Power outages in portions of the area continued for several days following these and other storms that occurred during the middle of June.
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 Jackson, MS wrote its last area forecast discussion before the first event at Jun 16, 1:43 AM CST, 42 minutes earlier.
Area Forecast Discussion National Weather Service Jackson MS 243 AM CDT Fri Jun 16 2023 ...New DISCUSSION... .DISCUSSION... Issued at 240 AM CDT Fri Jun 16 2023 Through tonight: The next wave of severe weather in the form of an MCS is currently tracking southeastward across north Louisiana, with a 70 MPH gust recently recorded at SHV. Given persisting strong deep layer shear and a corridor of 3000-4000+ J/kg MLCAPE oriented ESE ahead of this complex, it is likely these storms will maintain intensity as they continue to track eastward into northeast/central LA and areas of central/south MS mainly south of I-20. A Severe Thunderstorm Watch is in effect through 15Z for this threat, with potential for wind gusts up to 80 MPH and large hail. With a dynamic linear system like this, we also cannot rule out tornadoes. At least one TDS was observed earlier tonight in northwest LA. Redevelopment of scattered convection is anticipated this afternoon through tonight, with higher confidence over the northern half of the area. Convective overturning from the morning storms may temporarily limit additional storms in the areas impacted this morning. However, those areas may recover by later in the day with the potential for more convection to move in. With deep layer shear remaining strong and pockets of mid level lapse rates forecast in the 7.5-8 C/km range, severe weather will remain a possibility through the overnight hours. Damaging wind gusts and large hail remain the primary threats, but tornadoes cannot be ruled out. /DL/ Saturday through next Thursday...Scattered showers and storms are currently forecast across the area Saturday in the wake of yet another disturbance exiting the region. Isolated severe storms will also be possible during this time. Damaging wind gusts and hail to the size of quarters will be possible with the most intense storms. Frequent lightning strikes and heavy downpours can be expected as well. Northwest flow aloft will persist across the region throughout the remainder of the forecast period. Therefore, this active weather pattern will persist well into next week as disturbances embedded in this flow trek across the region. While there will be some stabilization of our airmass in the wake of each disturbance, it won't last long. Instability will be quick to increase due to persistent southerly flow at the surface and westerly low level flow across the region maintaining an abundance of moisture across the forecast area. All of this, in addition to steep mid-level lapse rates and sufficient wind shear, will keep some severe chance in the forecast through at least Sunday as these disturbances move through the area. We could potentially see a lull in activity from late Saturday afternoon into Saturday evening. However early Sunday morning and into Sunday night, one to possibly two rounds of potentially severe storms could affect portions of the area as more disturbances are forecast to traverse the region. Currently, a "Slight" risk for severe storms encompasses the entire CWA. Damaging wind gusts up to 70 mph and up to quarter size hail will be possible with the most intense storms. Again, near continuous lightning strikes and heavy downpours will exist with all of this activity. A closed mid/upper level low pressure system will drop south towards the Tennessee Valley late Monday and eventually into the Deep South through the end of the forecast period. This will again maintain rain chances across the forecast area through the latter half of the work week, as the low is forecast to retrograde across the north central gulf coast through Thursday. Once again, during this timeframe we could potentially see the chance for at least isolated severe storms, but confidence in the exact area and timing this far out is too low to introduce anything into an already jammed packed HWO. Last but not least, temperatures will continue to warm throughout the period as ridging aloft tries increasing from the southwest Saturday into Monday. This is especially the case across far southwest portions of the CWA where highs top out in the mid and upper 90s. These hot temperatures combined with the humid conditions across the region, will result in dangerous heat stress conditions across mainly the southwest half of the CWA through early next week. While humid conditions will exist else where, daily coverage of convection look to keep highs in the mid 80s to low 90s range. /19/ && .AVIATION... (06Z TAFS) Issued at 1251 AM CDT Fri Jun 16 2023 Patchy mainly MVFR fog has developed in a few areas this evening, with VFR conditions elsewhere. These reductions will remain possible through the early morning hours, improving after sunrise. The main concern in the near term is a line of TS that will approach from the west early this morning and push eastward across the area through around sunrise. Wind gusts over 50 kt and hail are possible with these storms. The highest chances for these storms will be south of GLH/GWO/GTR. Additional SHRA/TS development is possible later in the day, with higher chances around GTR to GWO. Some of those storms could also be strong. /DL/ && .PRELIMINARY POINT TEMPS/POPS... Jackson 90 71 88 72 / 70 60 40 20 Meridian 90 69 88 70 / 70 60 40 20 Vicksburg 91 72 91 73 / 40 40 20 20 Hattiesburg 93 73 91 73 / 70 50 50 20 Natchez 94 73 92 74 / 50 30 30 20 Greenville 87 70 88 72 / 50 40 10 30 Greenwood 89 69 90 71 / 60 40 20 30 && .JAN WATCHES/WARNINGS/ADVISORIES... MS...None. LA...None. AR...None. && DL/19
Hazardous Weather Outlook National Weather Service Jackson MS 656 PM CDT Thu Jun 15 2023 ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074- 170000- Ashley-Chicot-Morehouse-West Carroll-East Carroll-Richland- Madison LA-Franklin LA-Catahoula-Tensas-Concordia-Bolivar- Sunflower-Leflore-Grenada-Carroll-Montgomery-Webster-Clay-Lowndes- Choctaw-Oktibbeha-Washington-Humphreys-Holmes-Attala-Winston- Noxubee-Issaquena-Sharkey-Yazoo-Madison MS-Leake-Neshoba-Kemper- Warren-Hinds-Rankin-Scott-Newton-Lauderdale-Claiborne-Copiah- Simpson-Smith-Jasper-Clarke-Jefferson-Adams-Franklin MS-Lincoln- Lawrence-Jefferson Davis-Covington-Jones-Marion-Lamar-Forrest- 656 PM CDT Thu Jun 15 2023 This hazardous weather outlook is for portions of southeast Arkansas, northeast Louisiana, central Mississippi, north central Mississippi, and south central Mississippi. .DAY ONE...Tonight and Friday SEVERE THUNDERSTORMS THREAT...Slight TIMING...Tonight through Friday Severe thunderstorms are possible tonight and tomorrow. Some thunderstorms could produce damaging winds of up to 60 to 80 mph and hail at least to the size of quarters. A tornado cannot be ruled out. (https://www.weather.gov/images/jan/graphicast/1.png) .DAYS TWO THROUGH SEVEN...Friday night through Wednesday Severe thunderstorms capable of producing damaging wind gusts and large hail will be possible through the periods of Friday night through Sunday night for portions of our forecast area. Stay tuned for updates to expected impacts and timing. (https://www.weather.gov/images/jan/graphicast/2.png) (https://www.weather.gov/images/jan/graphicast/3.png) Dangerous heat and increasing heat stress, with heat index values approaching 105 to 110 degrees, will be possible especially for portions of central and northeast Louisiana and southwest Mississippi through early next week. (https://www.weather.gov/images/jan/graphicast/4.png) .SPOTTER CALL TO ACTION STATEMENT... The activation of storm spotters, HAM radio operators, and emergency management personnel in support of severe weather operations may be needed for portions of the region tonight through Sunday night. NF && ...HAZARD LEGEND... *SEVERE THUNDERSTORMS* High...Significant severe thunderstorms and tornadoes are likely with strong or violent tornadoes possible. Moderate...Significant severe thunderstorms and tornadoes are likely with strong tornadoes possible. Enhanced...Severe thunderstorms are likely and tornadoes are possible. Slight...Severe thunderstorms and tornadoes are possible. Marginal...Isolated severe thunderstorms are possible. ...USEFUL WEATHER WEB PAGES (URLS)... NWS JAN Home page... https://www.weather.gov/jan Stay Aware, Stay Safe NWS JAN Briefing Page... https://www.weather.gov/jan/safe Latest Weather Briefing... https://www.weather.gov/jan/weather_briefing Tropical page... https://www.weather.gov/srh/tropical?office=jan National Hurricane Center Home Page... https://www.nhc.noaa.gov/ Find NWS JAN on Facebook... https://www.facebook.com/NWSJacksonMS Follow NWS JAN on Twitter... @NWSJacksonMS Follow NWS JAN on Youtube... https://www.youtube.com/user/NWSJacksonMiss ...ADDITIONAL URLS FOR SEVERE WEATHER ISSUES... Storm Prediction Center (SPC)... https://www.spc.noaa.gov/ Meso Analysis... https://www.spc.noaa.gov/exper/mesoanalysis/ Day 1 through 3 Outlooks... https://www.spc.noaa.gov/products/outlook/ Storm Reports... https://www.spc.noaa.gov/climo/online/
Preliminary Local Storm Report
National Weather Service Jackson MS
1043 PM CDT Thu Jun 15 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0758 PM Hail Clinton 32.34N 90.33W
06/14/2023 E1.00 inch Hinds MS Public
Hail approximately the size of quarters or
slightly larger fell in Clinton. Report and
picture relayed via Facebook.
&&
NFThe Ft Polk radar (KPOE), 119 km away, was scanning. The volume nearest the first event began at 08:26 UTC.
16 thunderstorm wind. Local standard time, as filed.
Widespread trees, power lines, and power poles were blown down in a swath across northern portions of Catahoula Parish. Several homes were damaged due to fallen trees.
Trees, power lines, and power poles were blown down in a swath across central portions of Catahoula Parish. Some camper vehicles were damaged in the Big Bayou area.
Widespread trees and power lines were blown down in a swath across southern portions of the parish.
Widespread trees and power lines were blown down in a swath across southern portions of the parish.
Widespread trees and power lines were blown down in a swath across central portions of the parish.
Widespread trees and power lines were blown down in a swath across northern portions of the parish.
Widespread trees and power lines were blown down in a swath across northern portions of the parish. A few homes were damaged due to fallen trees.
Trees and power lines were blown down in a swath across southern portions of the parish including some which fell onto US Highway 425.
Trees and power lines were blown down in a swath across central portions of the parish including some which fell onto LA Highway 139 and US Highway 165.
Widespread trees and power lines were blown down across southern parts of the parish including some which fell onto roads.
Widespread trees and power lines were blown down across central and northern parts of the parish including some which fell onto roads.
Widespread trees and power lines were blown down in a swath across southern portions of the parish including some which fell onto LA Highway 577 and one which fell onto a home in Delta. A peak wind gust of 60 mph was measured at the Vicksburg Tallulah Regional Airport ASOS site KTVR.
Widespread trees and power lines were blown down across southern parts of the parish, especially around Epps and south to the Richland Parish line.
Widespread trees and power lines were blown down in a swath across northern portions of the parish including some which fell onto US Highway 80 and some in and around Tallulah. A peak wind gust of 59 mph was measured by a private weather station at the Tallulah Airport.
A couple of trees were blown down in the area.
Several trees and power lines were blown down in town.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Louisiana in 2023Every state in 2023This day in weather historyWarnings in Louisiana, June 2023
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 2026-10-01. Each event’s entry at NCEI: 1150015, 1150016, 1150039, 1150024, 1150027, 1150040, 1150030, 1150058, 1150069, 1150073, 1150075, 1150089, 1150081, 1150094, 1150083, 1150098.