A moist and unstable airmass was in place over the region. This helped fuel some showers and thunderstorms during the afternoon that brought strong 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.
A moist and unstable airmass was in place over the region. This helped fuel some showers and thunderstorms during the afternoon that brought strong 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 Jun 30, 2:53 PM CST, 2 minutes earlier.
Area Forecast Discussion National Weather Service Jackson MS 353 PM CDT Fri Jun 30 2017 .DISCUSSION... .Tonight and Tomorrow...Models seem to be in good agreement with rain ending in the evening and redeveloping early in the morning. Will maintain chance to likely pops for much of the CWA through the evening. The higher resolution models continue to show rain ending around 3z and redeveloping shortly before 12z. The biggest disagreement comes in the afternoon where the GFS/Euro kind of stall the boundary over the northern half of the area with rain not quite reach south and east. Opted for the higher res and tried not to over do it. Will go with likely pops from northwest to southeast through the afternoon Saturday. The upper jet seems to move north and west of the area, but the outflow that moved into the northwest zones earlier had some gusts. Lapse rates will also be decent, so will continue mention the potential for severe winds tonight and tomorrow in the far northwest zones. Went with guidance temps and a blend on the pops. Saturday night through next Friday morning: Overall a hot, humid and stormy period is expected for the first week of July. As the upper ridge amplifies to our west over the southern Plains and into the northern Gulf, expect boundary layer temperatures to warm. 850 anomalies begin to increase into the 90th percentiles, so went warmer as we go into the late weekend into the early-mid parts of next week (Sunday-Wednesday). With increasing warmth and humidity, expect increasing heat stress in the west on Sunday. Convection will slowly become more confined to the east as the ridge builds in from the west late weekend into early next week. With at least an inch and three quarter PWs, low level dewpoints in the low-mid 70s, and vertical totals in the upper 20s to near 30 deg. C each day from Sunday through mid parts of next week (around Wednesday), some risk for severe wet microbursts will exist. We will have to monitor each day as we get closer and make that assessment daily. With low level dewpoints rising into the low-mid 70s and temperatures climbing into the low-mid 90s, Monday through Wednesday will bring heat stress values near critical thresholds of heat indices near 105 deg. F. With some convection around, will hold off for now introducing anything in the HWO/graphics but areas not affected by convection/clouds could be quite oppressive, especially in western areas. Will have to monitor as some mention of heat stress will likely be needed in HWO/graphics as we get closer and more confident on location of convection. Expect convection to remain possible through the week, with ensembles (GFS, GEPS & EPS) showing a very strong amplifying ridge over the western-northern Rockies with the ridge axis pivoting east into the northern Plains. A fast moving disturbance will be moving through the mid-Mississippi Valley. In the wake, some northwest flow and a backdoor cold front may bring in increasing convection chances from east to west for the mid-late parts of next week, with slightly less oppressive conditions. /DC/27/ && .AVIATION... 18Z TAF discussion: showers and a few thunderstorms were peppered across the radar early this afternoon. Rain will impact nearly all sites this afternoon. Added shra at most locations through the afternoon. MVFR to LIFR conditions may develop quickly. An abundance of moisture will cause downpours that will reduce visibility. Thunder was not expected to be widespread. a disturbance continues to move southeast toward the area and will likely impact GLH within the hour. Wind gusts with the line seem to be gusting around 30 mph. Expected the line to weaken before moving into the area but it seems to still have enough momentum to move across the river. Will likely have to go back and add some short term wind gusts. Models show the rain ending quickly after sunset, so removed rain at most locations around 3z. More convection is expected to develop early in the morning as a front drops into the area. && .PRELIMINARY POINT TEMPS/POPS... Jackson 74 90 74 91 / 19 60 27 39 Meridian 72 90 73 90 / 19 57 23 47 Vicksburg 74 91 74 92 / 19 60 24 30 Hattiesburg 73 91 74 92 / 19 58 15 34 Natchez 74 90 73 90 / 18 60 15 18 Greenville 75 90 74 90 / 30 62 46 51 Greenwood 74 89 73 89 / 27 57 44 51 && .JAN WATCHES/WARNINGS/ADVISORIES... MS...None. LA...None. AR...None. &&
Hazardous Weather Outlook National Weather Service Jackson MS 340 PM CDT Fri Jun 30 2017 ARZ074-075-LAZ007>009-015-016-023>026-MSZ019-034-035-040>043-045- 047>066-072>074-012045- Ashley-Chicot-Morehouse-West Carroll-East Carroll-Richland- Madison LA-Franklin LA-Catahoula-Tensas-Concordia-Sunflower- Washington-Humphreys-Issaquena-Sharkey-Yazoo-Madison MS-Neshoba- 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- 340 PM CDT Fri Jun 30 2017 This hazardous weather outlook is for portions of southeast Arkansas, northeast Louisiana, central Mississippi, northwest Mississippi, and south central Mississippi. .DAY ONE...Tonight and Saturday The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Saturday night 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. MSZ018-012045- Bolivar- 340 PM CDT Fri Jun 30 2017 This hazardous weather outlook is for portions of northwest Mississippi. .DAY ONE...Tonight and Saturday SEVERE THUNDERSTORMS THREAT...Marginal TIMING...Tonight after midnight Showers and thunderstorms will develop a boundary late tonight. A few severe storms will be possible. Damaging gusts will be the primary risk. (www.weather.gov/images/jan/graphicast/image1.png) .DAYS TWO THROUGH SEVEN...Saturday night 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 may be needed for portions of the region tonight. MSZ025>033-036>039-044-046-012045- Leflore-Grenada-Carroll-Montgomery-Webster-Clay-Lowndes-Choctaw- Oktibbeha-Holmes-Attala-Winston-Noxubee-Leake-Kemper- 340 PM CDT Fri Jun 30 2017 This hazardous weather outlook is for portions of central Mississippi, east central Mississippi, north central Mississippi, and northeast Mississippi. .DAY ONE...Tonight and Saturday SEVERE THUNDERSTORMS THREAT...Marginal TIMING...Saturday Showers and thunderstorms will develop a boundary Saturday. A few severe storms will be possible. Damaging gusts will be the primary risk. (www.weather.gov/images/jan/graphicast/image1.png) .DAYS TWO THROUGH SEVEN...Saturday night through Thursday As the boundary spreads south and east Saturday evening, a few severe storms may develop. Damaging wind gusts will be the primary risk. (www.weather.gov/images/jan/graphicast/image1.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 Saturday through Saturday night. 21 && ...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... 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 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), 89 km away, was scanning. The volume nearest the first event began at 20:55 UTC.
3 thunderstorm wind. Local standard time, as filed.
A tree was blown down on Oak Bowery Road.
A tree fell onto a van that was traveling down Highway 29. No injuries occurred. Another large pine tree fell across Rose Lane.
A tree fell and partially blocked George Boutwell Road.
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, June 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: 701178, 701180, 701181.