A disturbance came into the region in northwest flow. It combined with daytime heating and instability resulting in showers and thunderstorms.
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 JAN wrote it up.
A disturbance came into the region in northwest flow. It combined with daytime heating and instability resulting in showers and thunderstorms. Some of these storms produced damaging wind gusts, hail, and flash flooding.
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 May 30, 11:29 AM CST, 41 minutes earlier.
Area Forecast Discussion...UPDATED National Weather Service Jackson MS 1229 PM CDT Wed May 30 2018 .UPDATE... Updated for 18Z aviation discussion && .AVIATION... 18Z TAF discussion: VFR flight categories will prevail at sites through much of this forecast period. Due to isolated to scattered convection this afternoon, a brief period of MVFR/IFR categories can't be ruled out at sites where convection is observed. The same goes for early Thursday morning. Some low stratus/patchy fog developing around day break Thursday, could potentially reduce ceilings and/or visibilities to MVFR status for a brief 1-2 hour period. Southwest winds today will gradually become light from the south this evening, with a light south to calm wind expected during the overnight hours. 19/ && .DISCUSSION... The forecast area will remain under northwest flow aloft as we sit on the western side of an exiting trough, and weak high pressure at the surface. This northwest flow will keep dry air and cool temperatures aloft over the region, but conditions in the lower levels of the atmosphere are quickly recovering as warming and moistening conditions have ensued and will continue. This will result in warm and increasingly humid conditions across the region today, as highs climb into the low and middle 90s. This, as dew points generally sit around 70, will result in afternoon heat index values climbing up around the century mark today. Isolated to scattered thunderstorms are also expected to develop across mainly northern and eastern portions of the forecast area later this afternoon as well. This activity could be furthered by an outflow boundary currently propagating east southeast across the Delta region this morning. As this boundary reaches East Central Mississippi during peak heating hours this afternoon, it could become the focusing mechanism for thunderstorms there from mid- afternoon through early this evening. This, in addition to ample instability and steep lapse rates over this area, could yield some strong to isolated severe storms capable of producing both gusty winds and hail. Therefore, I'll maintain the ongoing "Marginal Risk" for isolated severe storms across the northeast portion of the CWA this afternoon. The ongoing forecast is in good shape. Other than some minor adjustments to hourly elements of the forecast to better account for current trends, no major changes will be made to the forecast on this update. /19/ Prior discussion below: Today through Tonight: The primary focus will be for a possible MCS to affect the northern and eastern counties for this afternoon. Latest satellite imagery showed the remnants of the tropical disturbance moving north over the Mid-Mississippi Valley. The region will be under the influence of troughiness through early this evening. A disturbance will come into the region in northwest flow. It will be combine with daytime heating and instability. Mid to upper level ridging will build in from the west late tonight. It will be another warm day as instability and daytime heating will bring a better coverage of thunderstorms, mainly east of Interstate 55. Pwats will be around 1.8 inches, surface Cape 3-4Kft, 27-28 vertical totals, and 0-3 km 20 knots. Some of the CAM guidance shows some isolated severe storms affecting portions of the northern and eastern counties for this afternoon into early this evening. As we lose daytime heating expect the storms to diminish after sunset. So with this in mind will keep the current marginal risk graphic for this afternoon. As far as temperatures are concerned highs will range from the lower 90s east to the middle 90s west. Lows will range from the lower to middle 70s. Will keep the best scattered convective chances generally east of Interstate 55./17/ Thursday through Sunday: Heat will be the big story for the end of the week into the weekend as a stout mid/upper ridge builds eastward into the region. Mid level warming in association with this feature will help suppress convection across most of the forecast area Thursday and Friday, though we can't rule out a shower or storm on the eastern periphery of the ridge slipping into East MS. Daytime temps will soar into the mid/upper 90s across much of the area, which when combined with considerable lingering low level moisture will result in heat indices beginning to surpass 100 during the daytime hours. By this weekend, confidence in the ridge keeping rain out of the area decreases as a series of more potent shortwaves swing through the Mid Atlantic and Southeast US. These could bring convective complexes along the eastern periphery of the ridge and across at least some portion of our area. Absent such systems to disrupt insolation, Saturday and Sunday have the potential to be the warmest days of this stretch, with heat indices potentially reaching advisory criteria over some portion of the forecast area. Unfortunately at this stage, it is too soon to accurately determine when and which of these disturbances will result in storms and how much they might disrupt heating. For this morning's HWO/graphics, we'll expand mention of dangerous heat into Thursday for NE Louisiana, continue mentioning it everywhere Friday and Saturday, and continue highlighting it over the southern 2/3rds of the CWA on Sunday. Monday and Tuesday: While there are still indications a weak front bringing humidity relief will make it into the region toward the end of the forecast period, timing remains a bit more uncertain, with some model solutions now pushing this back into Monday. Even with a drier airmass over much of the area, temps could still push the mid 90s especially over southern and western portions of the forecast area into early next week, albeit with lower heat indices. /DL/ && .PRELIMINARY POINT TEMPS/POPS... Jackson 93 73 93 73 / 18 12 7 2 Meridian 91 71 93 71 / 35 20 16 5 Vicksburg 94 73 94 73 / 9 6 3 2 Hattiesburg 91 72 93 72 / 38 13 16 4 Natchez 93 73 93 73 / 9 4 5 2 Greenville 93 74 93 74 / 17 7 3 3 Greenwood 92 73 92 73 / 23 11 5 4 && .JAN WATCHES/WARNINGS/ADVISORIES... MS...None. LA...None. AR...None. && 19
Hazardous Weather Outlook...UPDATED National Weather Service Jackson MS 1232 PM CDT Wed May 30 2018 ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-034-035-040>043- 047>050-053>057-059>066-072>074-310000- Ashley-Chicot-Morehouse-West Carroll-East Carroll-Richland- Madison LA-Franklin LA-Catahoula-Tensas-Concordia-Bolivar- Sunflower-Washington-Humphreys-Issaquena-Sharkey-Yazoo-Madison MS- Warren-Hinds-Rankin-Scott-Claiborne-Copiah-Simpson-Smith-Jasper- Jefferson-Adams-Franklin MS-Lincoln-Lawrence-Jefferson Davis- Covington-Jones-Marion-Lamar-Forrest- 1232 PM CDT Wed May 30 2018 This hazardous weather outlook is for portions of southeast Arkansas, northeast Louisiana, central Mississippi, northwest Mississippi, and south central Mississippi. .DAY ONE...The rest of Today and Tonight... The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday... Heat indices approaching 105 degrees will be possible across northeast Louisiana on Thursday, areawide on Friday and Saturday, and along and south of I-20 on Sunday. This will result in increasing heat stress. Those who will be spending extended amounts of time outdoors are encouraged to stay hydrated, avoid strenuous activies, and take frequent breaks. (https://www.weather.gov/images/jan/graphicast/image2.png) .SPOTTER CALL TO ACTION STATEMENT... The activation of storm spotters, HAM radio operators, and emergency management personnel in support of severe weather operations is not expected through next Tuesday. MSZ025>033-036>039-044>046-051-052-058-310000- Leflore-Grenada-Carroll-Montgomery-Webster-Clay-Lowndes-Choctaw- Oktibbeha-Holmes-Attala-Winston-Noxubee-Leake-Neshoba-Kemper- Newton-Lauderdale-Clarke- 1232 PM CDT Wed May 30 2018 This hazardous weather outlook is for portions of central Mississippi, east central Mississippi, north central Mississippi, and northeast Mississippi. .DAY ONE...The rest of Today and Tonight... SEVERE THUNDERSTORMS THREAT...Marginal TIMING...remainder of today Isolated severe storms capable of producing damaging wind gusts and hail up to quarter size are possible this afternoon. (https://www.weather.gov/images/jan/graphicast/1.png) .DAYS TWO THROUGH SEVEN...Thursday through Tuesday... Heat indices approaching 105 degrees will be possible across northeast Louisiana on Thursday, areawide on Friday and Saturday, and along and south of I-20 on Sunday. This will result in increasing heat stress. Those who will be spending extended amounts of time outdoors are encouraged to stay hydrated, avoid strenuous activies, and take frequent breaks. (https://www.weather.gov/images/jan/graphicast/image2.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 the rest of today. 19 && ...HAZARD LEGEND... *SEVERE THUNDERSTORMS* High...Significant severe thunderstorms are expected. Moderate...Severe storms expected with significant severe weather possible. Enhanced...Severe storms expected. Slight...Severe storms possible. Marginal...Isolated severe storms 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 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)... www.spc.noaa.gov/ Meso Analysis... www.spc.noaa.gov/exper/mesoanalysis/ Day 1 through 3 Outlooks... www.spc.noaa.gov/products/outlook/ Storm Reports... www.spc.noaa.gov/climo/online/
The Jackson/Brandon,MS radar (KDGX), 160 km away, was scanning. The volume nearest the first event began at 18:10 UTC.
8 thunderstorm wind, 3 hail, 1 flash flood. Local standard time, as filed.
Several houses were damaged including a trailer with the siding ripped off. Power lines were also blown down.
Nickel to quarter size hail fell just north of Schlater.
A tree was blown down along Highway 49E in the Wyatt Community.
Multiple trees were blown down across Highways 430 and 17 near Black Hawk.
A tree was blown down across Rushing Road.
A tree was blown down and caused a substation outage on Industrial Park Road. Damage was caused by a fallen tree at Academy Village Apartments. Another tree was blown down on power lines to the north-northwest of Starkville.
Multiple trees were blown down in the Clayton Village Area, including on Curtis Chapel Road and Hickory Drive.
Trees were blown down on Highways 118 and 18 near Harmony.
Quarter sized hail fell on Newton County Martin Road.
A motorist was stranded in flooding on 15th Street and had to be rescued. A couple of structures were flooded on Roberts and Ferrell streets in Laurel. Multiple streets were flooded on the south side of Laurel.
A tree fell on a house along Roberts Street, and trapped two people. There were no injuries. Multiple trees were blown down across the county.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Mississippi in 2018Every state in 2018This day in weather historyWarnings in Mississippi, 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: 749511, 749512, 749517, 749518, 749514, 749513, 749519, 749522, 749520, 749521, 749579, 749523.