Scattered thunderstorms developed around portions of Mississippi on August 21st. Some became severe and produced damaging wind gusts.
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.
Scattered thunderstorms developed around portions of Mississippi on August 21st. Some became severe and produced damaging wind gusts.
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 21, 2:04 PM CST, 1 hour 16 minutes earlier.
Area Forecast Discussion National Weather Service Jackson MS 304 PM CDT Sun Aug 21 2022 .DISCUSSION... The rest of today and tomorrow... Another rainy couple of days is in store for the ArkLaMiss region as a shortwave trough dives into the region. This paired with persistent 850mb southerly flow will keep a tropical-like airmass settled over the region today and tomorrow. PWATs ranging 2.0-2.5 inches will allow for an ample supply of moisture. This airmass will continue to supply enough instability to continue the development of scattered to numerous showers and storms. The storms, however, are lacking sufficient low and mid-level lapse rates to generate any significant updrafts. While thunderstorms can't be ruled out, rain showers will be the most prominent across the area this afternoon into the evening. The main concern over the next 2 days will be the risk of heavy rainfall paired with pre-existing saturated conditions, especially for areas west of the I-55 corridor. Rainfall rates ranging 2-4" will be possible in any storm that is able to develop. In addition, slow moving storms along a west to east flow will allow for the potential training of storms. Due to this, a "Limited" for flash flooding has been outlooked in the HWO. By tonight, rain chances will decrease but still remain scattered as instability decreases overnight. Lows will remain in the 70s as radiational cooling will be fairly inefficient due to cloud cover across the region. Tomorrow, a frontal boundary associated with a shortwave embedded in a longwave trough will bring a boundary in the the ArkLaMiss region, allowing for sufficient instability in the generation of showers and some storms. Numerous to widespread precipitation is likely throughout the area. Localized flash flooding will continue to be a concern across the ArkLaMiss. A "Limited" will again be advertised in the HWO as the potential for heavy rainfall continues. A flash flood watch has been a consideration over the previous forecast cycles, but we will hold off once again as uncertainty over location and timing remains. Highs will struggle to reach 80s for areas along and north of I-20 as the boundary dips into the area, keeping cloud cover increased throughout the day. Areas south if I-20 will reach the lower to middle 80s. /AJ/ Monday night through the week... The theme for the upcoming week at least through mid-week is cooler than normal and continued increased rain chances. The region will remain under the influence of an East Coast mid-level trough. A stalled front will remain just to the north or across the northern parts of the forecast area. Along and south of this front, plenty of moisture will be present. Precipitable water values look to be around 2.3 inches and continued moisture transport will feed into the region through at least mid-week. With continued westerly flow, disturbances riding along the boundary will help initiate showers and storms which could lead to localized flooding concerns. Models are indicating the higher QPF totals extending a little further east than previous runs, with amounts through mid-week of several inches, with the ECMWF showing a whopping 6-9 inches(but the GFS is way on the other end of the spectrum of being drier). While scattered showers and isolated thunderstorms will continue to occur early in the week, the impetus for much of the rainfall looks to occur starting either late Monday or into Tuesday as a surface low develops across Texas and moves to the north and east across our region. This will help rainfall consolidate and move across the region, with some of the higher amounts focusing more on the Tuesday into Wednesday time period. With a rather tropical airmass in place, rainfall should be rather efficient and flash flooding will be a concern through mid-week. Will continue for now with the limited risk outlook but there will be a need to upgrade portions of the region to an elevated risk for flooding and a flood watch needed. The question remains where exactly. My initial thinking is that it will span an area that covers southeast AR, northeast LA and portions of MS north of I-20 and west of I-55. Thanks to the cloud cover and rainfall, temperatures will be cooler than normal. Highs through much of the week will be in the 70s and 80s. A change will occur toward the end of the week. The upper trough will move off to the east and much of the rain moves south. This will keep the best POPs in the south and conditions should return a little more like summer around here with highs in the 80s and 90s. /28/ && .AVIATION... 18Z TAF discussion: All sites will toggle in between VFR/MVFR cigs this afternoon into the evening as precipitation continues to develop across the region. TSRA/SHRA will be possible across the area through 03Z, which will lower vis. By 06Z VCSH will be possible across the area and VFR/IFR cigs will prevail through the remainder of the period after 06Z. /AJ/ && .PRELIMINARY POINT TEMPS/POPS... Jackson 72 79 71 77 / 65 88 60 76 Meridian 71 80 70 78 / 54 85 49 69 Vicksburg 72 79 71 77 / 74 86 63 76 Hattiesburg 72 85 71 80 / 58 78 60 79 Natchez 72 80 71 78 / 51 84 64 80 Greenville 72 77 70 78 / 74 92 55 59 Greenwood 72 78 69 81 / 69 85 45 60 && .JAN WATCHES/WARNINGS/ADVISORIES... MS...None. LA...None. AR...None. && 28/AJ
Hazardous Weather Outlook National Weather Service Jackson MS 304 PM CDT Sun Aug 21 2022 ARZ074-LAZ007>009-015-016-023>026-MSZ040-047>049-053>056-059>066- 072>074-222015- Ashley-Morehouse-West Carroll-East Carroll-Richland-Madison LA- Franklin LA-Catahoula-Tensas-Concordia-Issaquena-Warren-Hinds- Rankin-Claiborne-Copiah-Simpson-Smith-Jefferson-Adams-Franklin MS- Lincoln-Lawrence-Jefferson Davis-Covington-Jones-Marion-Lamar- Forrest- 304 PM CDT Sun Aug 21 2022 This hazardous weather outlook is for portions of southeast Arkansas, northeast Louisiana, central Mississippi, south central Mississippi, and west central Mississippi. .DAY ONE...Tonight and Monday FLOODING THREAT...Limited TIMING...This afternoon and again Monday This afternoon and again monday, localized flash flooding is possible, particularly in low lying and urban areas. Minor river flooding is also possible. (https://www.weather.gov/images/jan/graphicast/1.png) .DAYS TWO THROUGH SEVEN...Monday night through Saturday Flooding is possible for the entire outlook area Monday night through Wednesday. (https://www.weather.gov/images/jan/graphicast/1.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 Saturday. ARZ075-MSZ018-019-025>039-041>046-050>052-057-058-222015- Chicot-Bolivar-Sunflower-Leflore-Grenada-Carroll-Montgomery- Webster-Clay-Lowndes-Choctaw-Oktibbeha-Washington-Humphreys- Holmes-Attala-Winston-Noxubee-Sharkey-Yazoo-Madison MS-Leake- Neshoba-Kemper-Scott-Newton-Lauderdale-Jasper-Clarke- 304 PM CDT Sun Aug 21 2022 This hazardous weather outlook is for portions of southeast Arkansas, central Mississippi, and north central Mississippi. .DAY ONE...Tonight and Monday FLOODING THREAT...Limited TIMING...Monday Monday, localized flash flooding is possible, particularly in low lying and urban areas. Minor river flooding is also possible. (https://www.weather.gov/images/jan/graphicast/1.png) .DAYS TWO THROUGH SEVEN...Monday night through Saturday Flooding is possible for the entire outlook area Monday night through Wednesday. (https://www.weather.gov/images/jan/graphicast/1.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 Saturday. 33 && ...HAZARD LEGEND... *FLOODING* Extreme...Widespread and significant flooding is likely. Significant...Widespread flash flooding is likely and significant flooding is possible. Elevated...Areas of flash flooding likely. Limited...Localized flash flooding is possible. ...USEFUL WEATHER WEB PAGES (URLS)... NWS JAN Home page... https://www.weather.gov/jan Stay Aware, Stay Safe NWS JAN Briefing Page... https://www.weather.gov/jan/safe Latest Weather Briefing... https://www.weather.gov/jan/weather_briefing Tropical page... https://www.weather.gov/srh/tropical?office=jan National Hurricane Center Home Page... https://www.nhc.noaa.gov/ Find NWS JAN on Facebook... https://www.facebook.com/NWSJacksonMS Follow NWS JAN on Twitter... @NWSJacksonMS Follow NWS JAN on Youtube... https://www.youtube.com/user/NWSJacksonMiss ...ADDITIONAL URLS FOR FLOODING ISSUES... Current Watches and Warnings... https://www.weather.gov/jan/safe_HeavyRain Observed Precipitation Images... https://www.weather.gov/jan/precipmaps River Forecast Center... https://www.weather.gov/lmrfc/ Significant River Flood Outlook... https://www.wpc.ncep.noaa.gov/nationalfloodoutlook/index.html Day 1 through 3 Excessive Rainfall... https://www.wpc.ncep.noaa.gov/qpf/excess_rain.shtml Excessive Rainfall Discussion... https://www.wpc.ncep.noaa.gov/discussions/qpferd.html Day 1 through 7 QPF... https://www.wpc.ncep.noaa.gov/qpf/qpf2.shtml QPF Discussion... https://www.wpc.ncep.noaa.gov/discussions/qpfpfd.html
The Jackson/Brandon,MS radar (KDGX), 61 km away, was scanning. The volume nearest the first event began at 21:22 UTC.
1 thunderstorm wind. Local standard time, as filed.
A barn was destroyed by severe downburst winds.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Mississippi in 2022Every state in 2022This day in weather historyWarnings in Mississippi, August 2022
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: 1089104.