Above normal temperatures for mid-September, along with ample moisture in place over the region, brought afternoon showers and storms to the region. Some of these storms had gusty winds.
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.
Above normal temperatures for mid-September, along with ample moisture in place over the region, brought afternoon showers and storms to the region. Some of these storms had gusty winds.
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 Sep 19, 2:06 PM CST, 30 minutes earlier.
Area Forecast Discussion National Weather Service Jackson MS 306 PM CDT Tue Sep 19 2017 .DISCUSSION... Tonight through Wednesday... Latest RAP satellite imagery showed shortwave passing through the region. This combined with some cooling aloft and low level moisture had triggered scattered showers and some thunderstorms across the region. With 6-7c lapse rates we may see a few strong storms with some gusty winds for the remainder of the afternoon. Expect the shortwave to exit the region by early this evening. For early this evening the last of the showers will end across the east and southeast. For later tonight expecting another round of patchy fog prior to dawn which will lift by 14z. Another shortwave will approach from the west on Wednesday. Return flow ahead of this feature will trigger isolated to scattered showers and thunderstorms mainly during the afternoon. Once again midlevel lapse rates will be from 6-7C with weak flow. This could bring a few strong storms with some gusty winds during the afternoon. As far as temperatures are concern readings will continue to be above normal. Lows will be in the upper 60s to lower 70s. Highs will be in the lower 90s. Heat indices will range from the middle 90s to around 100./17/ Wednesday night through Tuesday... A warm summer like pattern will persist through the long term period with isolated to scattered diurnally driven afternoon showers and thunderstorms possible through at least this weekend. The period will start off with Jose forecast to be a tropical storm off the New England Coast, Hurricane Maria just to the northwest of Puerto Rico while ridging remains centered over the mid Mississippi River valley into the Midwest. A strong digging longwave trough over the western CONUS will help to amplify the ridging going into the weekend, which could lead to some degree of increased heat stress across the Delta. However, a weakness/upper level low is progged to retrograde beneath the ridge into the northern Gulf/ArkLaMiss, which would in turn keep lower heights over the CWA and help to keep heat issues in check. With that being said, max heat index values look to top out in the 100-103 degree range in a few locations which isn't enough to warrant mention in the HWO/graphics at this time. In terms of rain chances, isolated to scattered afternoon showers and storms can be expected through at least this weekend before drier air wedges in from the east by late weekend/early next work week. Widespread severe weather is not expected but a few strong storms with isolated gusty winds cannot be ruled out primarily early in the period. Going into the early portion of next week, the ridging should break down as the longwave trough lifts through the Midwest and brings a cold front and a more fall like airmass towards the ArkLaMiss. /TW/ && .AVIATION... 18Z TAF discussion: Expect the best chance of tsra coverage to be in the GTR/MEI/HBG area through this afternoon which will cause brief periods of ifr ceilings and visibilities. Another round of patchy fog can be expected for late tonight into early Wednesday. /17/ && .PRELIMINARY POINT TEMPS/POPS... Jackson 71 91 71 91 / 11 32 8 30 Meridian 70 91 70 90 / 16 35 10 31 Vicksburg 72 90 71 91 / 7 26 7 28 Hattiesburg 70 90 70 90 / 16 42 21 38 Natchez 72 90 71 90 / 13 28 8 31 Greenville 72 92 71 92 / 6 21 8 23 Greenwood 72 91 71 92 / 7 27 9 24 && .JAN WATCHES/WARNINGS/ADVISORIES... MS...None. LA...None. AR...None. && TW/17
Hazardous Weather Outlook National Weather Service Jackson MS 210 PM CDT Tue Sep 19 2017 ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074- 201915- 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- 210 PM CDT Tue Sep 19 2017 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 Wednesday The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Wednesday night through Monday 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 Monday. 21 && ...HAZARD LEGEND... No short term hazards expected. ...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
The Mobile radar (KMOB), 117 km away, was scanning. The volume nearest the first event began at 20:35 UTC.
1 thunderstorm wind. Local standard time, as filed.
Outdoor home security camera captured video of a pine tree branch being snapped by straight line winds in association with a microburst. Other trees were reported down in the subdivision as well. This occurred in the Trailwood subdivision in Petal.
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, September 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: 715386.