An upper level low pressure system moved across the region, while a surface low developed along the Gulf Coast and tracked east. Precipitation overspread the region, as temperatures were in the 30s.
Every event with a place to put it; 9 filed by county or forecast zone are drawn at its center, in a lighter ring. 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.
An upper level low pressure system moved across the region, while a surface low developed along the Gulf Coast and tracked east. Precipitation overspread the region, as temperatures were in the 30s. This resulted in a mix of sleet and snow for portions of the region until a transition to all snow. The highest snowfall accumulations were across eastern portions of Central Mississippi, where six to six and a half inches fell. Widespread two to four inches of snow fell across most of Central Mississippi and northeast Louisiana, generally along and north of the Natchez Trace corridor. Locations south of this, including portions of south central and southeast Mississippi received no snow or less than one inch of snow.
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 Jan 10, 4:39 PM CST, 1 hour 21 minutes earlier.
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</html>Hazardous Weather Outlook National Weather Service Jackson MS 323 PM CST Sun Jan 10 2021 ARZ074-075-LAZ007>009-015-016-023-025-MSZ027-028-034>037-040>044- 047-048-112130- Ashley-Chicot-Morehouse-West Carroll-East Carroll-Richland- Madison LA-Franklin LA-Tensas-Carroll-Montgomery-Washington- Humphreys-Holmes-Attala-Issaquena-Sharkey-Yazoo-Madison MS-Leake- Warren-Hinds- 323 PM CST Sun Jan 10 2021 This hazardous weather outlook is for portions of southeast Arkansas, northeast Louisiana, central Mississippi, north central Mississippi, northwest Mississippi, and west central Mississippi. .DAY ONE...Tonight and Monday SNOW THREAT...Elevated TIMING...Tonight through Monday Snow and sleet accumulations of 2 to 4 inches are expected from this evening through Monday morning. Roads will become snow covered resulting in hazardous driving conditions, including for the Monday morning commute. (https://www.weather.gov/images/jan/graphicast/1.png) .DAYS TWO THROUGH SEVEN...Monday night through Saturday 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 Saturday. LAZ024-026-MSZ018-019-025-026-029>033-038-039-045-046-049>051-053- 054-059-060-112130- Catahoula-Concordia-Bolivar-Sunflower-Leflore-Grenada-Webster- Clay-Lowndes-Choctaw-Oktibbeha-Winston-Noxubee-Neshoba-Kemper- Rankin-Scott-Newton-Claiborne-Copiah-Jefferson-Adams- 323 PM CST Sun Jan 10 2021 This hazardous weather outlook is for portions of northeast Louisiana, central Mississippi, east central Mississippi, north central Mississippi, and southwest Mississippi. .DAY ONE...Tonight and Monday SNOW THREAT...Limited TIMING...Tonight through Monday Snow and sleet accumulations of up to 2 inches are expected from this evening through Monday morning. Roads, especially bridges, may become snow covered and slick, including for the Monday morning commute. (https://www.weather.gov/images/jan/graphicast/1.png) .DAYS TWO THROUGH SEVEN...Monday night through Saturday 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 Saturday. MSZ052-055>058-061>066-072>074-112130- Lauderdale-Simpson-Smith-Jasper-Clarke-Franklin MS-Lincoln- Lawrence-Jefferson Davis-Covington-Jones-Marion-Lamar-Forrest- 323 PM CST Sun Jan 10 2021 This hazardous weather outlook is for portions of central Mississippi, east central Mississippi, and south central Mississippi. .DAY ONE...Tonight and Monday The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Monday night through Saturday 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 Saturday. 1 && ...HAZARD LEGEND... *SNOW* Extreme...Roads impassable and widespread power outages likely. Significant...Dangerous travel conditions and numerous power outages possible. Elevated...Difficult travel conditions and sporadic power outages possible. Limited...Bridges may be snow-covered. ...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 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 WINTER WEATHER ISSUES... Current Winter Weather... https://www.weather.gov/jan/safe_Winter Day 1 through 3 Winter Threats... https://www.wpc.ncep.noaa.gov/wwd/winter_wx.shtml Winter Impact Discussion... https://www.wpc.ncep.noaa.gov/discussions/qpfhsd.html
The national radar mosaic for the moment the first event began.
9 heavy snow. Local standard time, as filed.
Heavy snow fell across Franklin Parish. Up to four inches of snow fell across the parish.
Heavy snow fell across Catahoula Parish. Two to three inches of snow fell across the parish. Sicily Island observed 3.5 inches of snow.
Heavy snow fell across Concordia Parish. Up to two inches of snow fell across the parish. Two inches of snow was reported in Clayton.
Heavy snow fell across Madison Parish. Three to four inches of snow fell across the parish, with the highest total of four inches occurring around Tallulah.
Heavy snow fell across Richland Parish. Two to three inches of snow fell across the parish, with the northern part of the parish receiving the higher accumulations. St. Joseph recorded two inches and there was three inches in Newellton.
Heavy snow fell across Morehouse Parish. Two to three inches of snow fell across the parish. The highest accumulation was 3.5 inches around Beekman.
Heavy snow fell across West Carroll Parish. Up to three inches of snow fell across the parish. The south central part of the parish observed accumulation up to four inches in some locations.
Heavy snow fell across East Carroll Parish. Up to three inches of snow fell across the parish. The far southern part of the parish observed accumulation up to four inches in some locations.
Heavy snow fell across Richland Parish. Up to four inches of snow fell across the parish, mainly across the southern half. Snowfall up to three inches fell in the northern half of the parish.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Louisiana in 2021Every state in 2021This day in weather historyWarnings in Louisiana, January 2021
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 2026-10-01. Each event’s entry at NCEI: 943551, 943557, 943576, 943550, 943553, 943523, 943544, 943625, 948443.