A complex of showers and thunderstorms moved into the ArkLaMiss region late on the 28th. These storms brought a swath of damaging winds and some flash flooding.
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 complex of showers and thunderstorms moved into the ArkLaMiss region late on the 28th. These storms brought a swath of damaging winds and some flash flooding. Additional storms formed during the afternoon of the 30th along a stalled boundary and brought flash flooding to parts of the area.
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 May 28, 5:41 AM CST, 3 hours 21 minutes earlier.
Area Forecast Discussion...UPDATED National Weather Service Jackson MS 641 AM CDT Sun May 28 2017 .UPDATE... Updated for 12Z aviation discussion && .AVIATION... 12Z TAF discussion: A patchy MVFR stratus deck exists across the region this morning. Through the day, ceilings will rise to VFR thresholds. A weakening band of SHRA and isolated TSRA is advancing southward toward the I-20 corridor. This activity is expected to weaken this morning, with additional development anticipated later this afternoon and evening. This may bring brief visby reductions in heavier periods of rain. Also some storms may become severe with gusts to 50 kt and hail. Overnight tonight into early Monday morning, additional low stratus clouds are expected to develop, with ceilings at many sites falling to MVFR or IFR. /DL/ && .DISCUSSION... Today and tonight: We are faced with a somewhat complicated and low confidence forecast for today, with several mesoscale factors in play and poorly-initialized model guidance. First things first...an outflow dominant band of showers with isolated embedded thunderstorms has been slowly sinking southward into the far northern portion of the CWA this early morning. More vigorous convection along this line either weakened or moved eastward into North AL. Farther west, a second complex of more robust convection was ongoing across west/central AR near the convergence of separate areas of westward and southward moving outflow. Ahead of these lines, a fairly unstable airmass remains in place across the area, thanks in part to a rather moist boundary layer. However, this instability is largely capped between 700-850 mb. Through the remainder of the morning, our primary focus will be on whether or not activity over AR can sustain itself into the Delta. If it does, there remains lower end potential for damaging wind gusts or marginally severe hail. Given this possibility, a Severe TS Watch remains in effect until 13Z for the far northern portion of the area. Lingering boundaries from the weakening morning convection will play a big role in how things evolve later on today. For now, it appears the mostly likely scenario is that the complex over AR will weaken as it approaches the Delta, with new development occuring this afternoon across South AR/North LA, spreading eastward across our area from the late afternoon through the evening hours. With moderate to strong instability and somewhat steep mid level lapse rates expected to exist ahead of this development and sufficient deep layer shear in place, some of the storms could become severe with damaging wind gusts and marginally severe hail. In addition, the presence of strong instability and multiple low level boundaries will create some potential for training/repetitive convection in a few areas. This could result in localized flooding. Both the severe and flooding threats will continue to be advertised in HWO/graphical products. Though at this stage we'd prefer to offer more specific timing for the severe threat, there remains a bit too much uncertainty to be more specific quite yet. Ahead of the storms, another warm day is expected as low/mid level temps and heights remain unseasonably high and steady WAA continues over the area. Temperatures will again approach 90, and heat indices could again creep to near the triple digits in a few spots. /DL/ Monday through Saturday...Monday the stalled front is expected to be across the northern portions of our CWA. Wl still have a moist airmass in place with surface dew points around 70F and PWATs in excess of an inch and three quarters. There will likely be morning convection but a subtle shortwave within the west southwest flow aloft will combine with daytime heating to enhance storm development during the afternoon into the early evening especially over east central Mississippi where a few severe storms may develop. The main threat Monday will be damaging straight line winds but, quarter sized hail and locally heavy rainfall will also be possible. The GFS progged another timely shortwave over our CWA Tuesday afternoon and although wl still have a moist airmass in p[lace, meager lapse rates and weak deep layer shear should mitigate storm strength. Model consensus is weaker and farther west with a shortwave trough for the weekend than last night's run. Instead of increasing rain chances going into the weekend, Wednesday through the end of the week will feature a slow warming trend with mainly scattered afternoon and early evening coverage of convection. Morning lows will continue to be at or above normal through the period. Cooler than normal afternoon highs are expected Monday and Tuesday, warming back above normal by the end of the week. /22/ && .PRELIMINARY POINT TEMPS/POPS... Jackson 89 70 82 67 / 32 59 67 52 Meridian 89 70 82 67 / 30 51 64 50 Vicksburg 90 70 82 66 / 48 67 63 56 Hattiesburg 91 71 85 69 / 21 27 66 52 Natchez 90 70 82 67 / 31 52 66 51 Greenville 87 69 82 66 / 73 66 60 40 Greenwood 86 70 81 66 / 70 64 58 51 && .JAN WATCHES/WARNINGS/ADVISORIES... MS...None. LA...None. AR...None. && DL/22
Hazardous Weather Outlook...UPDATED National Weather Service Jackson MS 954 AM CDT Sun May 28 2017 ARZ074-075-LAZ007-008-MSZ018-019-025>039-041-291500- Ashley-Chicot-Morehouse-West Carroll-Bolivar-Sunflower-Leflore- Grenada-Carroll-Montgomery-Webster-Clay-Lowndes-Choctaw-Oktibbeha- Washington-Humphreys-Holmes-Attala-Winston-Noxubee-Sharkey- 954 AM CDT Sun May 28 2017 This hazardous weather outlook is for portions of southeast Arkansas, northeast Louisiana, central Mississippi, and north central Mississippi. .DAY ONE...Today and Tonight SEVERE THUNDERSTORMS THREAT...Marginal TIMING...This afternoon through Tonight FLOODING THREAT...Limited TIMING...This afternoon through Tonight Isolated severe thunderstorms are possible this afternoon through tonight. The primary hazards with these storms will be damaging wind gusts and hail up to quarter size. In addition, locally heavy rain may result in localized flooding. (www.weather.gov/images/jan/graphicast/image2.png) .DAYS TWO THROUGH SEVEN...Monday through Saturday Severe thunderstorms are possible Monday into Monday evening across central Mississippi and northeast Louisiana. The primary hazards with these storms will be damaging wind gusts and quarter sized hail. (www.weather.gov/images/jan/graphicast/image3.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 today through Monday night. LAZ009-015-016-023>026-MSZ040-042>063-065-291500- East Carroll-Richland-Madison LA-Franklin LA-Catahoula-Tensas- Concordia-Issaquena-Yazoo-Madison MS-Leake-Neshoba-Kemper-Warren- Hinds-Rankin-Scott-Newton-Lauderdale-Claiborne-Copiah-Simpson- Smith-Jasper-Clarke-Jefferson-Adams-Franklin MS-Lincoln-Lawrence- Covington- 954 AM CDT Sun May 28 2017 This hazardous weather outlook is for portions of northeast Louisiana, central Mississippi, and south central Mississippi. .DAY ONE...Today and Tonight SEVERE THUNDERSTORMS THREAT...Slight TIMING...This afternoon through Tonight FLOODING THREAT...Limited TIMING...This afternoon through Tonight Severe thunderstorms are possible this afternoon through tonight. The primary hazards with these storms will be damaging wind gusts and hail up to half dollar size. In addition, locally heavy rain may result in localized flooding. (www.weather.gov/images/jan/graphicast/image2.png) .DAYS TWO THROUGH SEVEN...Monday through Saturday Severe thunderstorms are possible Monday into Monday evening across central Mississippi and northeast Louisiana. The primary hazards with these storms will be damaging wind gusts and quarter sized hail. (www.weather.gov/images/jan/graphicast/image3.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 today through Monday night. MSZ064-066-072>074-291500- Jefferson Davis-Jones-Marion-Lamar-Forrest- 954 AM CDT Sun May 28 2017 This hazardous weather outlook is for portions of south central Mississippi, and southeast Mississippi. .DAY ONE...Today and Tonight SEVERE THUNDERSTORMS THREAT...Marginal TIMING...This afternoon through Tonight Isolated severe thunderstorms are possible this afternoon through tonight. The primary hazards with these storms will be damaging wind gusts and hail up to quarter size. (www.weather.gov/images/jan/graphicast/image2.png) .DAYS TWO THROUGH SEVEN...Monday through Saturday Severe thunderstorms are possible Monday into Monday evening across central Mississippi and northeast Louisiana. The primary hazards with these storms will be damaging wind gusts and quarter sized hail. (www.weather.gov/images/jan/graphicast/image3.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 today through Monday night. 23 && ...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. *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 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/ ...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
439 AM CDT SUN MAY 28 2017
MSZ018-281030-
Bolivar MS-
439 AM CDT SUN MAY 28 2017
...A STRONG THUNDERSTORM WILL AFFECT BOLIVAR COUNTY THROUGH 530 AM
CDT...
At 438 AM CDT, Meteorologists were tracking strong thunderstorms
along a line extending from near Gunnison to Arkansas City. Movement
was east at 35 mph.
Winds in excess of 40 mph will be possible with these storms.
Locations impacted include...
Cleveland, Shelby, Shaw, Rosedale, Scott, Mound Bayou, Renova, Boyle,
Benoit, Gunnison, Jersey Point, Deeson, Merigold, Beulah, Pace and
Winstonville.
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.
&&
A severe thunderstorm watch remains in effect until 800 AM CDT for
northwestern Mississippi.
LAT...LON 3401 9066 3362 9066 3362 9076 3353 9076
3354 9123 3360 9113 3370 9122 3368 9103
3372 9106 3372 9114 3378 9114 3378 9099
3384 9107 3393 9101 3397 9109 3398 9108
3400 9102 3396 9097 3402 9099 3403 9089
TIME...MOT...LOC 0938Z 290DEG 31KT 3390 9097 3362 9122
DLSpecial Weather Statement
National Weather Service Jackson MS
536 AM CDT SUN MAY 28 2017
ARZ074-075-281130-
Chicot AR-Ashley AR-
536 AM CDT SUN MAY 28 2017
...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN CHICOT AND ASHLEY
COUNTIES THROUGH 630 AM CDT...
At 536 AM CDT, Meteorologists were tracking a strong thunderstorm
over Fountain Hill, or near Hamburg, moving southeast at 35 mph.
Winds in excess of 40 mph will be possible with this storm.
Locations impacted include...
Crossett, Hamburg, Lake Village, Wilmot, Portland, Montrose,
Parkdale, Fountain Hill, Old Milo, Berlin and Snyder.
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.
&&
LAT...LON 3340 9189 3339 9147 3339 9146 3341 9146
3334 9116 3301 9143 3301 9174 3322 9198
TIME...MOT...LOC 1036Z 305DEG 32KT 3332 9184
DLSpecial Weather Statement
National Weather Service Jackson MS
742 AM CDT SUN MAY 28 2017
LAZ016-MSZ040-047-281315-
Madison LA-Warren MS-Issaquena MS-
742 AM CDT SUN MAY 28 2017
...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN MADISON PARISH...
WARREN AND SOUTH CENTRAL ISSAQUENA COUNTIES UNTIL 815 AM CDT...
At 741 AM CDT, Meteorologists were tracking a strong thunderstorm
near Vicksburg, moving east at 35 mph.
Wind gusts up to 50 mph will be possible with this storm.
This strong thunderstorm will be near...
Bovina around 805 AM CDT.
Other locations impacted by this storm include Mound and Delta.
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.
&&
LAT...LON 3228 9122 3257 9106 3259 9102 3248 9063
3216 9080
TIME...MOT...LOC 1241Z 283DEG 31KT 3238 9097
TWSpecial Weather Statement National Weather Service Jackson MS 827 AM CDT SUN MAY 28 2017 LAZ025-MSZ053-059-281400- Tensas LA-Jefferson MS-Claiborne MS- 827 AM CDT SUN MAY 28 2017 ...A STRONG THUNDERSTORM WILL AFFECT CENTRAL TENSAS PARISH... SOUTHWESTERN CLAIBORNE AND NORTH CENTRAL JEFFERSON COUNTIES UNTIL 900 AM CDT... At 827 AM CDT, Meteorologists were tracking a strong thunderstorm near Lake Bruin, or 27 miles northeast of Ferriday, 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... Newellton and Lake Bruin around 835 AM CDT. St. Joseph around 840 AM CDT. Alcorn around 850 AM 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. && LAT...LON 3189 9141 3211 9136 3209 9107 3181 9113 TIME...MOT...LOC 1327Z 279DEG 23KT 3197 9131 TW
The Jackson/Brandon,MS radar (KDGX), 89 km away, was scanning. The volume nearest the first event began at 15:02 UTC.
12 thunderstorm wind, 3 flash flood. Local standard time, as filed.
A few tree limbs were blown down in Brookhaven.
Several trees were blown down across the county.
Multiple trees and power lines were blown down on Highways 553 and 552.
Trees and power lines were blown down across the county.
A tree was blown down on a vehicle.
A tree fell on a house, which was destroyed.
Trees were blown down throughout the county.
A few trees were blown down.
Multiple trees were blown down on Cleary Road, with trees on a house.
A few trees were blown down.
A tree was blown down across Highway 13.
A tree was blown down across Highway 35.
There was significant flooding on Meadow Lane Drive.
The soil underneath part of Highway 25 South washed away, which closed one lane.
Mississippi Highway 432 west of I-55 was closed due to flooding.
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, May 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: 698609, 697857, 697856, 697858, 697860, 697861, 697864, 697862, 697867, 697865, 697866, 697868, 697869, 697870, 697871.