A line of severe thunderstorms moved through northeast Louisiana during the evening of August 18th and produced scattered wind damage.
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 line of severe thunderstorms moved through northeast Louisiana during the evening of August 18th and produced scattered wind damage.
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 Aug 18, 7:42 PM CST, 2 minutes earlier.
Area Forecast Discussion National Weather Service Jackson MS 842 PM CDT Sun Aug 18 2024 ...New MESOSCALE UPDATE... .MESOSCALE UPDATE... Issued at 842 PM CDT Sun Aug 18 2024 The severe weather threat continues across western/central portions of the forecast area this evening. A small convective system associated with a strong moist/instability axis ahead of a southward moving cold front is pushing quickly southward along the MS River. While there has been a slight downward trend in updraft intensity, large downdraft CAPE (e.g., 1726 j/kg per 00z JAN raob) preceding the system will support continued severe wind potential for next few hours. Otherwise, it still looks like we'll maintain some overnight convective rainfall potential over western portions of the area with continued theta-e advection on periphery of drier air push as previously discussed, but this activity is likely to not be sfc-based and overly instense in the wake of the evening system. /EC/ && .DISCUSSION... Issued at 131 PM CDT Sun Aug 18 2024 Through tonight... We have a bit of an unusual set up today with a long wave trough evident over the east CONUS, while a strong midlevel high is parked over the southern plains. This will bring a combo of heat and severe hazards today and tonight. Heat: Temperatures aloft associated with an 850 thermal axis will support very warm surface temperatures this afternoon with highs peaking in the upper 90s and low 100s across the area, as NW flow favors deep mixing. While dewpoints do mix down into the low 70s and upper 60s, The higher temperatures should compensate. Resulting heat indices will be in the 105 to 115 range and support the continuation of an excessive heat warning for much of the area until 8 PM tonight. Lower dewpoints due to mixing should keep heat indices closer to the 105 to 110 range for northeastern areas. As such, this area is under heat advisory until 8 PM. Severe: It addition to heat, an anomalous jet max around 40 to 50kts will overspread this very warm unstable airmass with strong flow for this time of year. A series of shortwaves rounding the base of the upper trough will help to initiate storm development across central Arkansas later this afternoon, propagating SSE around the eastern periphery of the midlevel high. An 850 theta e max should help to maintain organized complexes, especially along the Mississippi River. With moisture holding in this zone, the strongly sheared and unstable environment will be very favorable for cold pool maintenance and drive a severe, perhaps significant, wind threat. Damaging winds could even be associated with strong outflow boundaries well ahead of storms, especially later in the evening. A slight risk is highlighted for much of the area to account for this. A less favorable environment in the northeast limits confidence in severity and longevity and so a marginal has been delineated there. Storms should continue to progress SSE until late this evening into tonight. There are a few limiting factors, with very warm temps aloft and somewhat dry conditions. However, the thinking is the favorable conditions will be able to overcome the limitations. /SAS/ Monday Morning through Thursday... Relief from the staggering heat is on the way! By Monday morning a welcome regime change will begin to take shape, allowing for northerly to easterly winds throughout the period. This wind shift, will be caused by a ridge/surface high building in from Texas and traversing from the Oklahoma Panhandle to southern Missouri. In general, the weather for the week can be characterized by drier, cooler conditions, with highs not exceeding 95F and relative humidities not exceeding 40% during the day. Overnight lows during the week will be below 70F, bottoming out in the low 60s Thursday morning before slowly rebounding towards 70F as the week comes to a close. In keeping with the theme of drier conditions, we will not see PWATs climb above 1.2 throughout the period either, allowing for virtually no chance for showers/thunderstorms. Fire weather may be an area of concern throughout the week, with our low relative humidities, winds, and generally favorable conditions. At this time we will continue to monitor the threat closely but see no need to signal a heightened threat just yet. Friday through next Sunday... There will be chances for afternoon showers as return flow reinstates itself on the back end of the aforementioned high and a cut-off low/trough comes in from the Gulf, providing increased levels of moisture and lift across southern reaches of the forecast area. We will continue to keep a close eye on this weekend to hone the coverage, intensity, and chances for convective activity. /OAJ/DC/ && .AVIATION... (00Z TAFS) Issued at 706 PM CDT Sun Aug 18 2024 Primary concerns this forecast period will be associated with a convective system pushing southward across western portions of the area this evening, especially along/west of the GLH/JAN corridor, and a convective threat may continue into the HEZ area overnight into early Monday morning. Otherwise, expect VFR conditions to prevail for the most part as drier air pushes in for the remainder of the forecast. /EC/ && .PRELIMINARY POINT TEMPS/POPS... Jackson 75 93 70 92 / 60 20 10 0 Meridian 72 94 67 92 / 40 0 0 0 Vicksburg 74 91 69 92 / 60 30 10 0 Hattiesburg 76 96 71 94 / 50 10 0 0 Natchez 74 91 70 92 / 60 30 10 10 Greenville 73 90 67 89 / 70 30 10 0 Greenwood 72 93 67 90 / 50 10 0 0 && .JAN WATCHES/WARNINGS/ADVISORIES... MS...None. LA...None. AR...None. && SAS20/OAJ/EC
Special Weather Statement
National Weather Service Jackson MS
640 PM CDT Sun Aug 18 2024
MSZ018-190015-
Bolivar MS-
640 PM CDT Sun Aug 18 2024
...A STRONG THUNDERSTORM WILL IMPACT NORTHEASTERN BOLIVAR COUNTY
THROUGH 715 PM CDT...
At 639 PM CDT, Doppler radar was tracking a strong thunderstorm near
Deeson, or 11 miles southeast of White River National Wildlife
Refuge, moving southeast at 40 mph.
HAZARD...Wind gusts up to 50 mph and half inch hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.
Locations impacted include...
Shelby, Gunnison, Duncan, Alligator, and Deeson.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
A Severe Thunderstorm Watch remains in effect until 1000 PM CDT for
northwestern Mississippi.
&&
LAT...LON 3412 9066 3398 9066 3385 9091 3396 9097
3397 9096 3398 9096 3402 9099 3402 9090
3403 9089 3406 9089 3409 9087 3410 9089
3409 9092 3412 9095
TIME...MOT...LOC 2339Z 326DEG 37KT 3409 9091
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH
DLPreliminary Local Storm Report
National Weather Service Jackson MS
807 PM CDT Sun Aug 18 2024
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0658 PM Tstm Wnd Dmg Duncan 34.04N 90.75W
08/18/2024 Bolivar MS Law Enforcement
Local law enforcement reported a powerline
down near W Main St east of Duncan MS along
with a few downed trees.
&&
CRPreliminary Local Storm Report
National Weather Service Jackson MS
811 PM CDT Sun Aug 18 2024
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0751 PM Tstm Wnd Gst 2 NW Schlater 33.66N 90.37W
08/18/2024 M59 MPH Leflore MS Mesonet
Recorded by private weather station near
Schlater.
&&
DLPreliminary Local Storm Report
National Weather Service Jackson MS
813 PM CDT Sun Aug 18 2024
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0746 PM Tstm Wnd Gst 1 ESE Burdett 33.34N 90.89W
08/18/2024 M55 MPH Washington MS Mesonet
Measured by private weather station near
Burdett.
&&
DLPreliminary Local Storm Report
National Weather Service Jackson MS
824 PM CDT Sun Aug 18 2024
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0758 PM Tstm Wnd Dmg 1 N Moorhead 33.46N 90.51W
08/18/2024 Sunflower MS Law Enforcement
Law enforcement reported multiple trees and
powerlines down across Sunflower County.
&&
CRPreliminary Local Storm Report
National Weather Service Jackson MS
843 PM CDT Sun Aug 18 2024
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0740 PM Tstm Wnd Dmg 1 S Hamburg 33.22N 91.80W
08/18/2024 Ashley AR Law Enforcement
Law enforcement reported a roof blown off of
a business on Main St near Hamburg AR.
&&
CRThe Jackson/Brandon,MS radar (KDGX), 118 km away, was scanning. The volume nearest the first event began at 01:44 UTC.
1 thunderstorm wind. Local standard time, as filed.
Several trees were blown down near the intersection of MS Highway 580 and US Highway 65.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Louisiana in 2024Every state in 2024This day in weather historyWarnings in Louisiana, August 2024
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: 1215012.