Afternoon showers and storms developed in a warm and moist airmass. These storms brought damaging winds and some flash flooding to portions of Central Mississippi.
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.
Afternoon showers and storms developed in a warm and moist airmass. These storms brought damaging winds and some flash flooding to portions of Central Mississippi.
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 Jul 13, 2:03 PM CST, 32 minutes earlier.
Area Forecast Discussion
National Weather Service Jackson MS
303 PM CDT Fri Jul 13 2018
.DISCUSSION...
Tonight and tomorrow...
Afternoon convection is in full swing with scattered showers and
storms located generally along the Natchez Trace corridor. As
suspected, this has played havoc on temperatures, heat indices and
the resultant heat advisory. However, in locations that don't see
rain/storms, the heat indices have been able to climb to advisory
criteria or very close to it. Will leave this going and let the next
shift either cancel early or keep it until the 7pm expiration. These
storms will continue to develop and grow across the area through the
remainder of the afternoon into the early evening before
diminishing.
The upper ridge will remain centered across the Mid South region
once again tomorrow. This will help promote temperatures into the
lower to mid 90s. However, disturbances within the upper flow will
combine with plenty of moisture present(PW values forecast to be
around 1.8 to 2.2 inches) to bring additional showers and storms to
the region during the late morning into the afternoon and evening.
The best moisture content will once again be in the east and this
will likely be where the better coverage of storms will be as well.
Outside of storms, warm and muggy conditions will be present which
will lead to additional heat stress concerns. At this point, not
anticipating a heat advisory but will definitely continue the
limited risk for heat as heat indices will be in the 100-105 degree
range. /28/
.Saturday night through Thursday: The primary concerns will be
heat stress and rain chances along with muggy conditions through
period.
We will start the period with muggy conditions which will be
associated with a broad mid to upper level ridge over the Lower
Mississippi Valley. This will be combined with an approaching short
wave trough from the northwest which will cross the region on
Sunday, which will help to enhance our chances of rain. In this
soupy airmass pwats will exceed 2 inches at times during the period.
Expect diurnal convection through the period which will peak out
during the afternoon and wane during the evening hours through the
weekend. Also with highs in the lower to middle 90s combined with
70s dewpoint heat indices will be around 105 at times during the
afternoon from Sunday through Wednesday. Will update the heat stress
graphic to reflect that for the extended period. So heat advisories
may be needed during that period. Diurnal convection may limit the
impact of the heat stress during the period. As we move into early
next week the models and their ensembles continue to show an upper
trough coming out of Canada moving through the Midwest and Great
Lakes region which will extend down to our portion of the country
later in the week. This will help to drag a front into our northern
counties and will become stationary for Tuesday into Wednesday. This
will also increase our chances of rain. With the soupy airmass there
will be the risk of some localized heavy rainfall. This front will
weaken before another front comes down later in the work week. As
far as temps are concern lows will be in the 70s./17/
&&
.AVIATION...
18Z TAF discussion:
Showers and storms are developing across generally the Natchez
Trace corridor. Any TAF site that sees a thunderstorm can
experience brief reduction in vis and ceilings along with gusty
winds. These storms will continue through the afternoon and early
evening. Outside of storms, VFR conditions are expected to
prevail today. /28/
&&
.PRELIMINARY POINT TEMPS/POPS...
Jackson 75 95 75 92 / 27 41 32 42
Meridian 75 96 75 91 / 19 53 30 51
Vicksburg 74 94 75 94 / 19 32 13 33
Hattiesburg 74 95 75 93 / 14 33 28 50
Natchez 74 94 74 92 / 17 33 13 32
Greenville 75 95 75 95 / 11 32 13 32
Greenwood 75 94 75 93 / 25 39 25 45
&&
.JAN WATCHES/WARNINGS/ADVISORIES...
MS...Heat Advisory until 7 PM CDT this evening for MSZ018-019-025>059.
LA...Heat Advisory until 7 PM CDT this evening for LAZ007>009-015-016-
023>025.
AR...Heat Advisory until 7 PM CDT this evening for ARZ074-075.
&&
17/28Hazardous Weather Outlook National Weather Service Jackson MS 254 PM CDT Fri Jul 13 2018 ARZ074-075-LAZ007>009-015-016-023>025-MSZ018-019-025>059-142000- Ashley-Chicot-Morehouse-West Carroll-East Carroll-Richland- Madison LA-Franklin LA-Catahoula-Tensas-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- 254 PM CDT Fri Jul 13 2018 This hazardous weather outlook is for portions of southeast Arkansas, northeast Louisiana, central Mississippi, north central Mississippi, and southwest Mississippi. .DAY ONE...Tonight and Saturday EXCESSIVE HEAT THREAT...Elevated TIMING...Mainly through the rest of this afternoon The combination of heat and humidity today is expected to result in several hours of heat index values near 105 to 110 degrees outside of thunderstorms this afternoon. Residents should use precautions when spending time outdoors. (https://www.weather.gov/images/jan/graphicast/1.png) Maximum heat index values of near 105 degrees will be possible across portions of the ArkLaMiss through the weekend and into early next week. Afternoon showers and storms may limit the heat stress in some locations each day, but the combination of heat and humidity will result in a Limited threat for dangerous heat through early next week. Further heat advisories may be required. .DAYS TWO THROUGH SEVEN...Saturday night through Thursday |Maximum heat index values of near 105 degrees will be possible across portions of the ArkLaMiss through the weekend and into early next week. Afternoon showers and storms may limit the heat stress in some locations each day, but the combination of heat and humidity will result in a Limited threat for dangerous heat through early next week. Further heat advisories may be required. (https://www.weather.gov/images/jan/graphicast/2.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 Thursday. LAZ026-MSZ060>066-072>074-142000- Concordia-Adams-Franklin MS-Lincoln-Lawrence-Jefferson Davis- Covington-Jones-Marion-Lamar-Forrest- 254 PM CDT Fri Jul 13 2018 This hazardous weather outlook is for portions of northeast Louisiana, and south central Mississippi. .DAY ONE...Tonight and Saturday EXCESSIVE HEAT THREAT...Limited TIMING...This afternoon and again Saturday The combination of heat and humidity today is expected to result in several hours of heat index values near 105 degrees this afternoon and again on Saturday. (https://www.weather.gov/images/jan/graphicast/1.png) .DAYS TWO THROUGH SEVEN...Saturday night through Thursday Maximum heat index values of near 105 degrees will be possible across portions of the ArkLaMiss through the weekend and into early next week. Afternoon showers and storms may limit the heat stress in some locations each day, but the combination of heat and humidity will result in a Limited threat for dangerous heat through early next week. Further heat advisories may be required. (https://www.weather.gov/images/jan/graphicast/2.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 Thursday. 28 && ...HAZARD LEGEND... *EXCESSIVE HEAT* Extreme...Maximum heat index greater than 110 degrees for 3 or more days in a row and/or air temperatures greater than 107 degrees. Significant...Maximum heat index greater than 110 degrees and/or air temperatures greater than 105 degrees. Elevated...Maximum heat index 105 to 110 degrees and/or air temperatures greater than 103 degrees. Limited...Maximum heat index near 105 degrees and/or air temperatures 100 to 103 degrees. ...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
128 PM CDT FRI JUL 13 2018
MSZ049-131915-
Rankin MS-
128 PM CDT FRI JUL 13 2018
...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN RANKIN COUNTY UNTIL
215 PM CDT...
At 128 PM CDT, Meteorologists were tracking a strong thunderstorm
over Florence, or near Richland, moving east at 10 mph.
Winds in excess of 40 mph will be possible with this storm.
This strong thunderstorm will be near...
Monterey around 155 PM CDT.
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.
&&
LAT...LON 3205 9023 3206 9024 3209 9023 3209 9025
3210 9024 3211 9025 3212 9024 3215 9024
3215 9025 3216 9024 3218 9024 3218 9021
3220 9018 3222 9019 3222 9005 3205 9005
TIME...MOT...LOC 1828Z 271DEG 7KT 3216 9014
DCSpecial Weather Statement
National Weather Service Jackson MS
147 PM CDT FRI JUL 13 2018
MSZ049-050-131915-
Scott MS-Rankin MS-
147 PM CDT FRI JUL 13 2018
...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN RANKIN AND
NORTHWESTERN SCOTT COUNTIES UNTIL 215 PM CDT...
At 147 PM CDT, Meteorologists were tracking a strong thunderstorm
near Leesburg, or 12 miles northwest of Morton, moving south at 10
mph.
Dime size hail and winds in excess of 40 mph will be possible with
this storm.
This strong thunderstorm will be near...
Leesburg and Pisgah around 155 PM CDT.
Goshen Springs around 200 PM CDT.
Fannin around 215 PM CDT.
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.
&&
LAT...LON 3236 8968 3237 9010 3239 9009 3240 9007
3244 9007 3244 9004 3248 9002 3248 8999
3250 8998 3249 8996 3251 8993 3258 8986
3259 8980 3258 8979 3263 8973 3258 8973
3258 8967 3257 8967
TIME...MOT...LOC 1847Z 018DEG 9KT 3248 8981
DCSpecial Weather Statement
National Weather Service Jackson MS
229 PM CDT FRI JUL 13 2018
MSZ048-132015-
Hinds MS-
229 PM CDT FRI JUL 13 2018
...A STRONG THUNDERSTORM WILL AFFECT CENTRAL HINDS COUNTY UNTIL 315
PM CDT...
At 229 PM CDT, Meteorologists were tracking a strong thunderstorm
over Clinton, moving southwest at 15 mph.
Winds in excess of 40 mph will be possible with this storm.
This strong thunderstorm will be near...
Clinton and Brownsville around 235 PM CDT.
Jackson and Bolton around 255 PM CDT.
Raymond around 305 PM CDT.
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.
&&
LAT...LON 3244 9059 3248 9061 3250 9058 3251 9055
3250 9052 3252 9052 3252 9050 3254 9047
3257 9045 3249 9045 3249 9025 3240 9024
3240 9021 3218 9033 3237 9064
TIME...MOT...LOC 1929Z 045DEG 14KT 3238 9033
DCSpecial Weather Statement
National Weather Service Jackson MS
247 PM CDT FRI JUL 13 2018
MSZ043-044-050-132030-
Scott MS-Leake MS-Madison MS-
247 PM CDT FRI JUL 13 2018
...A STRONG THUNDERSTORM WILL AFFECT WESTERN LEAKE...NORTHWESTERN
SCOTT AND NORTHEASTERN MADISON COUNTIES UNTIL 330 PM CDT...
At 247 PM CDT, Meteorologists were tracking a strong thunderstorm
near Farmhaven, or 14 miles northeast of Canton, moving south at 15
mph.
Wind gusts up to 50 mph will be possible with this storm.
This strong thunderstorm will be near...
Farmhaven around 300 PM CDT.
Sharon around 305 PM CDT.
Ludlow around 315 PM CDT.
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.
&&
LAT...LON 3254 8966 3254 8977 3259 8979 3258 8982
3259 8984 3258 8986 3256 8987 3255 8990
3256 9016 3288 8997 3289 8963
TIME...MOT...LOC 1947Z 013DEG 15KT 3270 8981
DCSpecial Weather Statement
National Weather Service Jackson MS
306 PM CDT FRI JUL 13 2018
MSZ043-049-050-132045-
Scott MS-Rankin MS-Madison MS-
306 PM CDT FRI JUL 13 2018
...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN RANKIN...
SOUTHWESTERN SCOTT AND SOUTHEASTERN MADISON COUNTIES UNTIL 345 PM
CDT...
At 305 PM CDT, Meteorologists were tracking a strong thunderstorm
near Farmhaven, or 13 miles east of Canton, moving south at 30 mph.
Wind gusts up to 50 mph will be possible with this storm.
This strong thunderstorm will be near...
Pisgah, Leesburg, Goshen Springs and Branch around 325 PM CDT.
Fannin around 335 PM CDT.
Pelahatchie around 345 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 3227 8972 3229 8981 3239 9007 3240 9007
3240 9012 3241 9009 3255 9003 3259 8991
3259 8979 3254 8977 3254 8966
TIME...MOT...LOC 2005Z 010DEG 24KT 3258 8980
DCSpecial Weather Statement
National Weather Service Jackson MS
320 PM CDT FRI JUL 13 2018
MSZ042-047-048-132100-
Warren MS-Hinds MS-Yazoo MS-
320 PM CDT FRI JUL 13 2018
...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN WARREN...
NORTHWESTERN HINDS AND SOUTHWESTERN YAZOO COUNTIES UNTIL 400 PM
CDT...
At 320 PM CDT, Meteorologists were tracking a strong thunderstorm
near Youngton, or 10 miles east of Redwood, moving southwest at 10
mph.
Winds in excess of 40 mph will be possible with this storm.
This strong thunderstorm will be near...
Youngton and Oak Ridge around 335 PM CDT.
Edwards, Flowers and Bovina around 400 PM CDT.
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.
&&
LAT...LON 3257 9076 3257 9072 3259 9073 3259 9072
3262 9072 3254 9045 3251 9045 3227 9054
3239 9084
TIME...MOT...LOC 2020Z 024DEG 10KT 3250 9063
DCThe Jackson/Brandon,MS radar (KDGX), 64 km away, was scanning. The volume nearest the first event began at 20:32 UTC.
2 thunderstorm wind, 1 flash flood. Local standard time, as filed.
A tree was blown down at the intersection of Birdsong and Youngston roads.
A tree was blown down in the 4800 block of Oak Ridge Road.
Flash flooding occurred at the intersection of Oak Ridge and Flowers Hill roads.
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, July 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 2026-09-30. Each event’s entry at NCEI: 759447, 759448, 759449.