Showers and thunderstorms occurred in a warm and very moist air mass. Very heavy rainfall resulted in a significant localized flooding event, with some locations receiving over 6 inches of rain in a short period of time.
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 occurred in a warm and very moist air mass. Very heavy rainfall resulted in a significant localized flooding event, with some locations receiving over 6 inches of rain in a short period of time. Numerous roads were covered in several inches of water, with waist deep water in some homes. Strong gusty winds with some of these storms resulted in some downed trees due to rain saturated ground.
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 24, 5:08 AM CST, 1 hour 54 minutes earlier.
Area Forecast Discussion...UPDATED National Weather Service Jackson MS 608 AM CDT Mon Jul 24 2017 .UPDATE... Updated for 12Z aviation discussion && .AVIATION... 12Z TAF discussion: Locally heavy showers and a few thunderstorms will be impacting HBG/PIB sites directly over the next few hours with convection gradually spreading north to cover other sites along and south of the I-20 corridor through late morning to midday. GLH/GWO/CBM/GTR may take until afternoon to get much thunderstorm development, but at least scattered activity is expected in those areas as well. Of course locally IFR conditions will be briefly possible in all areas getting underneath a thunderstorm today. This morning away from storms expect IFR to MVFR conditions (mainly due to ceilings) through 9 to 10 am. Conditions should be mainly VFR away from heavier precipitation by the time we get to the afternoon. Surface winds will be from the southeast generally and less than 10 mph (except stronger gusts of course will be possible around tstorms). /BB/ && .DISCUSSION... Through Tonight: Scattered showers and thunderstorms have already started developing at this early hour over southern zones thanks to subtle atmospheric lift brought by a upper level low migrating east, just north of the coast. The weather across the whole Lower MS Valley will be influenced by this feature through the short term but the largest share of the impact should be on areas along and south of I-20 today where mostly cloudy skies and numerous showers and scattered storms will keep temperatures down below 90 degrees in almost all cases. Further north there will be more sunny breaks by midday after morning low clouds disperse and highs in the upper 80s to lower 90s there will work with ample atmospheric moisture (precipitable water values 2+ inches) to generate moderate instability by afternoon. In these areas it may take a while for thunderstorms to develop but expect various slight surface boundaries propagating in from the north and south to eventually trigger a good deal of activity before the day is out. We inherited a limited risk of flooding in the HWO for central and southern zones and opted to keep it going for this forecast. While explicit short range numerical guidance suggests the best potential for torrential rains may be focused more toward the coast there are still enough suggestions of training storms or very slow moving storms in the previously-outlined area to warrant a low-end potential for at least minor localized flooding issues. The slow-moving upper low mentioned initially should be transitioning more east of the region tonight but westerly convergent low level wind vectors into the backside of the feature will continue to provide impetus for shower and storm development even past the evening (when afternoon convection typically diminishes). The best thetaE advection axis several thousand feet above the ground should be aimed at the southeast half to third of zones where it is not impossible some issues with locally heavy rain might continue at least intermittently through the night. The next shift will watch this aspect of the forecast closely and update mentioned heavy rain threats as warranted. Otherwise, anticipate another warm and muggy night with shower and thunderstorm activity generally diminishing after midnight elsewhere and widespread temp minimums in the low to mid 70s. /BB/ Tuesday through next weekend... A very moist airmass will exist throughout the ArkLaMiss on Tuesday as moisture is fed into the region from the Gulf due to high pressure over the eastern Gulf. Forecast soundings depict PWats of above 2". Expect the best coverage of storms and showers to occur during the the mid morning through afternoon hours. Flash flooding due to heavy rainfall will be the primary threat on Tuesday. Drier conditions will begin to prevail late Tuesday into Wednesday as high pressure over the Gulf expands, cutting off the low level moisture flow into most of the region. Upper level heights will begin to increase also on Tuesday as ridging builds over the eastern CONUS. The increased moisture levels and precipitation will keep temperatures at bay on Tuesday but temperatures will once again approach hazardous levels on Wednesday as some drying occurs, especially in the western portions of the region. The region will be even drier on Thursday, where convective activity will be limited to the our easternmost counties. 850 temperatures will increase to above 20 degrees by Thursday. This usually corresponds to temperatures in the upper 90's in late July. Although widespread temps in the upper 90's aren't expected on Thursday, some may be sampled in areas along and west of the MS River. These temps combined with dewpoints near 70 will result in heat index values surpassing 105 degrees in the aforementioned zones. Friday could be the warmest day of the period depending on the timing of an approaching surface front dropping into the region from the north and associated with an upper level low that will cross through Canada. If the Euro's solution of a slower front holds true, temperatures could reach the upper 90's areawide ahead of the front. The front will result in a stormy start to the weekend but cooler temperatures and drier air in it's wake will provide much needed relief from the heat and humidity of this upcoming week. && .PRELIMINARY POINT TEMPS/POPS... Jackson 87 74 89 73 / 65 31 52 17 Meridian 88 73 87 73 / 65 35 57 23 Vicksburg 88 73 91 73 / 65 34 40 13 Hattiesburg 87 73 88 73 / 66 39 59 23 Natchez 86 73 89 72 / 65 35 37 10 Greenville 89 74 91 74 / 46 34 38 13 Greenwood 89 75 90 74 / 47 28 44 16 && .JAN WATCHES/WARNINGS/ADVISORIES... MS...None. LA...None. AR...None. && JPM3/BB
Hazardous Weather Outlook National Weather Service Jackson MS 427 AM CDT Mon Jul 24 2017 ARZ074-075-MSZ018-019-025>039-250930- Ashley-Chicot-Bolivar-Sunflower-Leflore-Grenada-Carroll- Montgomery-Webster-Clay-Lowndes-Choctaw-Oktibbeha-Washington- Humphreys-Holmes-Attala-Winston-Noxubee- 427 AM CDT Mon Jul 24 2017 This hazardous weather outlook is for extreme southeastern Arkansas and much of north central Mississippi. .DAY ONE...Today and Tonight The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday Heat stress concerns will trend upwards again Wednesday through Friday, especially along and west of the Interstate 55 corridor. Heat advisories may eventually be needed, particularly in portions of the Arklamiss Delta. (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 Sunday. LAZ007>009-015-016-023>026-MSZ040>066-072>074-250930- Morehouse-West Carroll-East Carroll-Richland-Madison LA- Franklin LA-Catahoula-Tensas-Concordia-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- 427 AM CDT Mon Jul 24 2017 This hazardous weather outlook is for northeastern Louisiana and much of central and southern Mississippi. .DAY ONE...Today and Tonight FLOODING THREAT...Limited TIMING...Today Slow moving thunderstorms with torrential rainfall will lead to locally higher amounts of rainfall. Flash flooding is possible, especially in areas that have seen heavy rain the last few days and where storms train over the same location. (www.weather.gov/images/jan/graphicast/image1.png) .DAYS TWO THROUGH SEVEN...Tuesday through Sunday Heat stress concerns will trend upwards again Wednesday through Friday, especially along and west of the Interstate 55 corridor. Heat advisories may eventually be needed, particularly in portions of the Arklamiss Delta. (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 Sunday. 50 && ...HAZARD LEGEND... *FLOODING* Extreme...Confident in significant flooding. Significant...Significant flooding possible. Elevated...Confident in flooding. Limited...Flooding possible. ...USEFUL WEATHER WEB PAGES (URLS)... NWS JAN Home page... www.weather.gov/jan Stay Aware, Stay Safe NWS JAN Briefing Page... www.weather.gov/jan/safe Latest Weather Briefing... www.weather.gov/jan/weather_briefing Tropical page... www.weather.gov/jan/tropical National Hurricane Center Home Page... www.nhc.noaa.gov/ Find NWS JAN on Facebook... www.facebook.com/NWSJacksonMS Follow NWS JAN on Twitter... @NWSJacksonMS Follow NWS JAN on Youtube... www.youtube.com/user/NWSJacksonMiss ...ADDITIONAL URLS FOR FLOODING ISSUES... Current Watches and Warnings... www.weather.gov/jan/safe_HeavyRain Observed Precipitation Images... www.weather.gov/jan/precipmaps River Forecast Center... www.weather.gov/lmrfc/ Significant River Flood Outlook... www.wpc.ncep.noaa.gov/nationalfloodoutlook/index.html Day 1 through 3 Excessive Rainfall... www.wpc.ncep.noaa.gov/qpf/excess_rain.shtml Excessive Rainfall Discussion... www.wpc.ncep.noaa.gov/discussions/qpferd.html Day 1 through 7 QPF... www.wpc.ncep.noaa.gov/qpf/qpf2.shtml QPF Discussion... www.wpc.ncep.noaa.gov/discussions/qpfpfd.html
Special Weather Statement
National Weather Service Jackson MS
626 AM CDT MON JUL 24 2017
MSZ072>074-241230-
Lamar MS-Marion MS-Forrest MS-
626 AM CDT MON JUL 24 2017
...THUNDERSTORMS PRODUCING HEAVY RAIN OVER SOUTHERN
MARION...SOUTHERN FORREST...AND SOUTHERN LAMAR COUNTIES...
At 623 AM CDT, Meteorologists were tracking thunderstorms along a
line extending from near Dexter to 6 miles south of Rock Hill.
Movement was east at 30 mph.
Torrential rainfall is occurring with these storms, and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
Locations impacted include...
Kokomo, Sandy Hook, Purvis, Lumberton, Pinebur, Brooklyn, Maxie,
Pickwick, Rock Hill and Baxterville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 3101 8935 3101 8942 3098 8943 3098 8947
3101 8950 3100 8983 3107 8984 3107 8992
3113 8994 3113 9001 3117 9001 3118 9003
3121 9003 3114 8914 3091 8914 3091 8934
TIME...MOT...LOC 1123Z 284DEG 26KT 3110 8992 3099 8931
19The Mobile radar (KMOB), 104 km away, was scanning. The volume nearest the first event began at 13:02 UTC.
17 flash flood, 4 thunderstorm wind, 2 flood, 1 funnel cloud. Local standard time, as filed.
The road at 342 Red Creek Road was covered with water.
A tree was blown down on County Farm Road near I-55. A tree was blown down on Damascus Road and another was blown down on I-55 near mile marker 57.
A tree was blown down on a power line on Noah Trail NW.
Parts of Lipsey Street was covered in water, and yards were also covered in water. Water was on Highway 51 in the northeast part of the county, and was across Old Malcum Road.
Flooding occurred on Farmington Station Blvd.
Entrekin Road was flooded in multiple spots near Havard Road.
Water was over Stratford Road.
Water was over Entrekin Road.
Water was over Red Creek and Mary Sollie roads.
There were multiple pictures of a funnel cloud.
Significant flash flooding occurred in Brookhaven, which resulted in six to ten inches of water on 10 to 12 streets in downtown Brookhaven. Brookhaven police blocked off Industrial Park Road due to flooding. Water entered some homes in Brookhaven, where three families needed to be rescued from their home, where the water was waist deep. Turpin Road washed out where a culvert ran underneath.
Antioch Road was flooded and impassable.
Water surrounded some mobile homes around Pattison.
Water was on Hogchain Road near Bogue Chitto.
Flooding occurred on Cherry Street Extension and Ferguson Mill Road. Numerous roads in downtown New Hebron were flooded, including Highways 42 and 43 North and South. Water entered homes around Cherry Avenue and Highway 43. Highway 43 between Silver Creek and Highway 478 was closed by MDOT due to flooding. Highway 42 between New Hebron and Joe Buckley Road was closed due to flooding. The Hamburger House had 10 to 12 inches of water inside.
Water ran over the bridge from the Homochitto River at Pleasant Valley and Low Water Bridge roads.
A tree was blown down on Rodeo Road.
Turpin Road washed out where a culvert ran underneath.
Flooding occurred on Highway 43 near Shivers.
Several roads were flooded across the county.
Stowey Parkman Road was flooded.
A tree was blown down on Highway 43 near Grange Road.
Ned Riley and Jones Ford roads were closed with the bridges submerged in water.
Flooding occurred on MS Highway 43 between New Hebron and the Simpson County line.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Mississippi in 2017Every state in 2017This day in weather historyWarnings in Mississippi, July 2017
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: 708175, 708177, 708181, 708182, 708183, 708184, 709097, 709094, 709096, 708185, 709102, 709104, 709107, 709103, 709115, 709127, 709125, 709136, 709132, 709128, 709130, 709129, 709131, 709135.