Showers and thunderstorms developed in a warm and humid air mass. Some of these storms produced damaging wind gusts.
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.
Showers and thunderstorms developed in a warm and humid air mass. Some of these storms produced damaging wind gusts. There were also four injuries from lightning.
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 Aug 10, 12:23 PM CST, 21 minutes earlier.
Area Forecast Discussion National Weather Service Jackson MS 123 PM CDT Fri Aug 10 2018 .UPDATE... Updated for 18Z aviation discussion && .AVIATION... 18Z TAF discussion: Shower and thunderstorm activity has increasingly become concentrated in east-central MS and south of I-20 in the past few hours and this trend is generally expected to hold into early this evening, before most of the precipitation diminishes late evening into the overnight hours. Heavy downpours, frequent lightning, and some brief gusty winds can be anticipated with some of the storms until then and this could bring very temporary IFR conditions to NMM/MEI/PIB/HBG through that time. Elsewhere, a stray thunderstorm cannot be ruled out, but conditions should be mostly VFR. Away from thunderstorms anticipate southwest through northwest surface winds mainly less than 10 mph. Late tonight, MVFR conditions are possible in all areas into tomorrow morning due to combinations of low clouds and light fog. However, there are not yet any strong signals of widespread IFR flight cat reductions. Tomorrow, showers and storms will likely be even more confined to southern zones with main possible impact at TAF sites probably confined to PIB/HBG. /BB/ && .DISCUSSION... Morning update discussion: A consolidated cluster of thunderstorms coming into northwestern portions of the Arklamiss Delta early this morning has been weakening steadily over the past few hours with the remnants of showers and embedded thunderstorms headed now toward the I-20 corridor between JAN and GWO. Meanwhile, outflow from the previous storm cluster is sparking scattered showers and a few storms in a band extending from NE LA toward the Jackson Metro while solid thetaE advection aloft is triggering a redevelopment of elevated thunderstorms coming into Ashley Co AR and Morehouse Parish LA. All this is occurring as the base of a trough aloft is moving through and providing synoptic lift through vorticity advection and associated moisture convergence and advection in the lower portions of the troposphere. The outflow band is not currently oriented favorably to efficiently trigger solid convection as low to mid layer shear vectors are mainly from the west and ranging from 10 to 20 kts (aligned closer to parallel to outflow boundary). However, we anticipate as this boundary slows it will enhance triggering of storms in an atmosphere containing up to 3000 j/kg of SB CAPE this afternoon south of I-20. Here numerous showers and storms are anticipated by this afternoon. A few severe storms cannot be ruled here out given combination of modest shear and instability, but ingredients are not favorable enough to yet to consider mentioning a severe risk in the HWO or graphics. Farther north, the remnants of the early morning thunderstorm cluster will spread east and bring some showers and embedded storms, but will also limit heating and instability that would be needed to produce numerous vigorous storms this afternoon. In the far north there is already evidence of mid layer drying (coming in from the north) that will limit precipitation potential, although it will be hard to rule out at least an isolated shower or storm there as we go through the day. Somewhat worrisome at present is another cluster of storms tied to thetaE advection coming back in parts of the NW Arklamiss Delta. Some of these areas have already received at least a few inches of rainfall since yesterday and the additional downpours could create some minor flooding concerns. There are no signals in guidance that this current setup will worsen through the day so, for now, will just watch things closely although will keep the HWO and graphics clear of hazards. /BB/ Prior discussion below: Today and Tonight...Isolated showers have already begun popping up across portions of the forecast area this morning. As daytime heating increases in this moist and unstable airmass, a shortwave aloft will pivot east into and through the region. Rain chances will increase in coverage across the forecast area through the course of the day. The best chances for showers and storms will again be during the afternoon hours, with rain chances gradually subsiding during the early evening hours as daytime heating wanes. Some isolated storms could become capable of producing 30-40 mph wind gusts. However, storms are currently expected to remain below severe limits. Heavy downpours can be expected with much of today's activity as precipitable H2O values generally sit around 2 inches across much of the region. Otherwise, highs this afternoon will range from the mid 80s to the lower 90s Once again, convection across the CWA will dissipate across the forecast area through the evening hours. However, an isolated shower can't be ruled out overnight. Lows will remain mild as they range from the upper 60s to middle 70s. /19/ Saturday through next week... An atypical weather pattern will lead to an active forecast through the long term period. As we get into the upcoming weekend, the steep ridge over the west will begin to weaken as it slides eastward, allowing an upper closed low to begin to take shape to the south of it in the Southern Plains. On the eastern half of the country, troughiness will continue to increase and eventually an upper closed low will result from it. The ArkLaMiss will remain in a weak upper flow pattern between these two features. Moisture values will be high on both Saturday and Sunday with Pwats peaking at over 2" by Sunday. Showers and some storms will be possible on both days with the better chances occuring in the afternoons. The aforementioned showers/storms along with cloud cover should keep temperatures just below average. Slightly warmer and drier conditions will exist as we get into early next week as both of the closed lows begin to lift to the north and ridging increases over the MS Valley region. Temperatures will gradually warm each day from Monday through Wednesday. The forecast gets less certain as we get towards the end of next week but global models do suggest that some upper disturbances could push across the MS River Valley, impacting our region's weather. && .PRELIMINARY POINT TEMPS/POPS... Jackson 70 91 72 90 / 36 19 30 17 Meridian 70 92 73 92 / 46 24 21 14 Vicksburg 71 91 72 91 / 64 18 39 20 Hattiesburg 71 92 73 92 / 68 49 35 19 Natchez 71 89 72 90 / 80 28 54 26 Greenville 69 92 72 88 / 27 12 17 18 Greenwood 70 93 72 90 / 13 13 14 17 && .JAN WATCHES/WARNINGS/ADVISORIES... MS...None. LA...None. AR...None. && JPM3/19/BB
Hazardous Weather Outlook National Weather Service Jackson MS 431 AM CDT Fri Aug 10 2018 ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074- 102000- 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- 431 AM CDT Fri Aug 10 2018 This hazardous weather outlook is for portions of southeast Arkansas, northeast Louisiana, central Mississippi, north central Mississippi, and south central Mississippi. .DAY ONE...Today and Tonight... The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Saturday through Thursday... The probability for widespread hazardous weather is low. .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 Thursday. 19 && ...HAZARD LEGEND... No short term hazards expected. ...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/jan/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
Special Weather Statement
National Weather Service Jackson MS
1158 AM CDT FRI AUG 10 2018
LAZ023-101800-
Franklin LA-
1158 AM CDT FRI AUG 10 2018
...A STRONG THUNDERSTORM WILL AFFECT SOUTHERN FRANKLIN PARISH UNTIL
100 PM CDT...
At 1157 AM CDT, Meteorologists were tracking a strong thunderstorm
over Columbia, moving east at 25 mph.
Dime size hail and wind gusts up to 50 mph will be possible with this
storm.
This strong thunderstorm will be near...
Liddieville around 1230 PM CDT.
Winnsboro around 1240 PM CDT.
Jigger around 1245 PM CDT.
Wisner around 100 PM CDT.
Other locations impacted by this storm include Gilbert.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
High winds can bring down trees and large limbs resulting in serious
injury or property damage. Exercise extreme caution when outdoors
during such strong winds...and be especially aware of older trees.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
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 3208 9191 3208 9190 3209 9187 3212 9187
3212 9188 3214 9190 3217 9189 3218 9183
3212 9150 3211 9150 3188 9158 3188 9160
3197 9160 3197 9165 3193 9167 3190 9170
3197 9189 3200 9190 3204 9190 3207 9193
TIME...MOT...LOC 1657Z 286DEG 22KT 3213 9208
BYBSpecial Weather Statement
National Weather Service Jackson MS
1229 PM CDT FRI AUG 10 2018
MSZ061>063-101815-
Lawrence MS-Lincoln MS-Franklin MS-
1229 PM CDT FRI AUG 10 2018
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT LINCOLN...LAWRENCE AND
NORTHEASTERN FRANKLIN COUNTIES UNTIL 115 PM CDT...
At 1228 PM CDT, Meteorologists were tracking strong thunderstorms
along a line extending from Oma to near Mccall Creek. Movement was
southeast at 20 mph.
Winds in excess of 40 mph will be possible with these storms.
Strong thunderstorms will be near...
Oma and Sontag around 1235 PM CDT.
Wanilla around 1240 PM CDT.
Monticello and Center Point around 1255 PM CDT.
Arm around 110 PM CDT.
Enterprise and Bogue Chitto around 115 PM CDT.
Other locations impacted by these storms include Silver Creek.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
High winds can bring down trees and large limbs resulting in serious
injury or property damage. Exercise extreme caution when outdoors
during such strong winds...and be especially aware of older trees.
Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 3156 9084 3169 9041 3170 9028 3172 9023
3175 9011 3169 8997 3152 8998 3152 8996
3145 8996 3135 9028 3135 9058
TIME...MOT...LOC 1728Z 305DEG 19KT 3171 9017 3155 9071
BYBSpecial Weather Statement
National Weather Service Jackson MS
129 PM CDT FRI AUG 10 2018
MSZ072-101900-
Marion MS-
129 PM CDT FRI AUG 10 2018
...A STRONG THUNDERSTORM WILL AFFECT SOUTHERN MARION COUNTY UNTIL 200
PM CDT...
At 128 PM CDT, Meteorologists were tracking a strong thunderstorm
over Columbia, moving east at 15 mph.
Dime size hail and winds in excess of 40 mph will be possible with
this storm.
This strong thunderstorm will be near...
Pickwick around 140 PM CDT.
Pinebur around 200 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
High winds can bring down trees and large limbs resulting in serious
injury or property damage. Exercise extreme caution when outdoors
during such strong winds...and be especially aware of older trees.
&&
LAT...LON 3116 8996 3133 8988 3128 8965 3103 8965
3101 8966
TIME...MOT...LOC 1828Z 292DEG 14KT 3122 8984
BYBSpecial Weather Statement
National Weather Service Jackson MS
132 PM CDT FRI AUG 10 2018
MSZ055-064-065-101900-
Jefferson Davis MS-Covington MS-Simpson MS-
132 PM CDT FRI AUG 10 2018
...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN SIMPSON...
NORTHWESTERN COVINGTON AND NORTH CENTRAL JEFFERSON DAVIS COUNTIES
UNTIL 200 PM CDT...
At 132 PM CDT, Meteorologists were tracking a strong thunderstorm
near Clem, or 9 miles south of Magee, moving east at 15 mph.
Dime size hail and wind gusts up to 50 mph will be possible with this
storm.
This strong thunderstorm will be near...
Lone Star around 140 PM CDT.
Mount Olive around 145 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
High winds can bring down trees and large limbs resulting in serious
injury or property damage. Exercise extreme caution when outdoors
during such strong winds...and be especially aware of older trees.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 3156 8969 3168 8986 3184 8978 3180 8965
3178 8965 3178 8961 3175 8951
TIME...MOT...LOC 1832Z 292DEG 14KT 3174 8974
BYBThe Jackson/Brandon,MS radar (KDGX), 99 km away, was scanning. The volume nearest the first event began at 18:44 UTC.
3 lightning, 1 thunderstorm wind. Local standard time, as filed.
A woman was injured by lightning while she was touching a metal building that was near a light pole. Her left arm and leg were affected.
One adult and one child were injured when the tree they were walking under was struck by lightning.
Numerous trees were blown down around Crystal Springs, including near the intersections of Highway 51 and County Line Road, and South Pat Harrison Drive and Earl Night Road.
An adult male was struck by lightning while driving south on Highway 45 just south of the Lauderdale County line.
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, August 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: 768100, 768101, 768102, 768103.