Alert archive / Mississippi / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 369, NWS Jackson, MS
NWS Jackson, MS issued this severe thunderstorm warning at Jul 31, 2020, 3:42 PM CDT for 5 counties in Mississippi. It was in force for 63 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 31, 2020, 3:42 PM CDT (20:42 UTC)
- Expired
- Jul 31, 2020, 4:45 PM CDT
- In force
- 63 min
- Issued by
- NWS Jackson, MS
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Attala County, MS, Carroll County, MS, Holmes County, MS, Leflore County, MS, Montgomery County, MS
The radar
The Jackson/Brandon,MS radar (KDGX), 118 km from the middle of the area, began a volume at 20:45 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 31, 1:21 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Jackson, MS (KJAN), launched 12:00Z, 8.7 hours before the alert went out and 115 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 937 J/kg
- Mixed-layer CIN
- -72 J/kg
- Mixed-layer LCL
- 784 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 108 m²/s²
- 0-3 km storm-relative helicity
- 74 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, 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 this severe thunderstorm warning went out at Jul 31, 3:21 PM CDT, 21 minutes earlier.
Area forecast discussion, Jul 31, 3:21 PM CDT, 21 minutes before
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</html>Hazardous weather outlook, Jul 31, 2:53 PM CDT, 49 minutes before
Hazardous Weather Outlook National Weather Service Jackson MS 253 PM CDT Fri Jul 31 2020 ARZ074-075-LAZ007>009-015-016-023-MSZ018-019-025>030-032-034>037- 040>042-047-012000- Ashley-Chicot-Morehouse-West Carroll-East Carroll-Richland- Madison LA-Franklin LA-Bolivar-Sunflower-Leflore-Grenada-Carroll- Montgomery-Webster-Clay-Choctaw-Washington-Humphreys-Holmes- Attala-Issaquena-Sharkey-Yazoo-Warren- 253 PM CDT Fri Jul 31 2020 This hazardous weather outlook is for portions of southeast Arkansas, northeast Louisiana, central Mississippi, north central Mississippi, and west central Mississippi. .DAY ONE...Tonight and Saturday SEVERE THUNDERSTORMS THREAT...Slight TIMING...The rest of this afternoon through this evening Severe thunderstorms capable of damaging wind gusts are possible this afternoon and early evening. In addition, tornadoes are possible. (https://www.weather.gov/images/jan/graphicast/1.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 remainder of the afternoon through tonight. LAZ024>026-MSZ031-033-038-039-043>046-048>051-053>055-059>062- 012000- Catahoula-Tensas-Concordia-Lowndes-Oktibbeha-Winston-Noxubee- Madison MS-Leake-Neshoba-Kemper-Hinds-Rankin-Scott-Newton- Claiborne-Copiah-Simpson-Jefferson-Adams-Franklin MS-Lincoln- 253 PM CDT Fri Jul 31 2020 This hazardous weather outlook is for portions of northeast Louisiana, central Mississippi, east central Mississippi, northeast Mississippi, south central Mississippi, and southwest Mississippi. .DAY ONE...Tonight and Saturday SEVERE THUNDERSTORMS THREAT...Marginal TIMING...The rest of this afternoon through this evening Isolated severe thunderstorms capable of damaging wind gusts are possible this afternoon and early evening. In addition, a tornado can't be ruled out. (https://www.weather.gov/images/jan/graphicast/1.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 remainder of the afternoon through tonight. MSZ052-057-058-063>066-072>074-012000- Lauderdale-Jasper-Clarke-Lawrence-Jefferson Davis-Covington-Jones- Marion-Lamar-Forrest- 253 PM CDT Fri Jul 31 2020 This hazardous weather outlook is for portions of east central Mississippi, south central Mississippi, and southeast 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. MSZ056-012000- Smith- 253 PM CDT Fri Jul 31 2020 This hazardous weather outlook is for portions of central Mississippi. .DAY ONE...Tonight and Saturday SEVERE THUNDERSTORMS THREAT...Marginal TIMING...This afternoon into this evening Isolated severe thunderstorms capable of damaging wind gusts are possible this afternoon and early evening. In addition, a tornado can't be ruled out. (https://www.weather.gov/images/jan/graphicast/1.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 remainder of the afternoon. 28 && ...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... 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 SEVERE WEATHER ISSUES... Storm Prediction Center (SPC)... https://www.spc.noaa.gov/ Meso Analysis... https://www.spc.noaa.gov/exper/mesoanalysis/ Day 1 through 3 Outlooks... https://www.spc.noaa.gov/products/outlook/ Storm Reports... https://www.spc.noaa.gov/climo/online/
In the hours before
Special weather statement, Jul 31, 3:14 PM CDT, 28 minutes before
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</html>Local storm report, Jul 31, 3:15 PM CDT, 27 minutes before
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</html>Local storm report, Jul 31, 3:17 PM CDT, 25 minutes before
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</html>Local storm report, Jul 31, 3:20 PM CDT, 22 minutes before
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</html>Local storm report, Jul 31, 3:32 PM CDT, 10 minutes before
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</html>Local storm report, Jul 31, 3:38 PM CDT, 4 minutes before
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</html>The office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 31, 1:56 PM CDT | Severe Thunderstorm Warning | JAN | Washington | 64 min |
| Jul 31, 2:32 PM CDT | Severe Thunderstorm Warning | JAN | Issaquena, Sharkey, Washington | 58 min |
| Jul 31, 2:47 PM CDT | Severe Thunderstorm Warning | JAN | Holmes, Humphreys, Leflore, Sunflower, Washington | 58 min |
| Jul 31, 3:14 PM CDT | Special Weather Statement | JAN | Yazoo | 46 min |
| Jul 31, 4:36 PM CDT | Severe Thunderstorm Warning | JAN | Attala, Choctaw, Montgomery, Webster | 39 min |
| Jul 31, 5:11 PM CDT | Severe Thunderstorm Warning | JAN | Choctaw, Clay, Oktibbeha, Webster, Winston | 28 min |
| Jul 31, 5:21 PM CDT | Special Weather Statement | JAN | Adams, Claiborne, Hinds, Jefferson | 39 min |
| Jul 31, 5:38 PM CDT | Special Weather Statement | JAN | Clay, Lowndes | 52 min |
| Jul 31, 6:10 PM CDT | Special Weather Statement | JAN | Copiah, Franklin, Hinds | 35 min |
| Jul 31, 6:28 PM CDT | Special Weather Statement | JAN | Lincoln, Rankin, Simpson | 62 min |
| Jul 31, 6:35 PM CDT | Special Weather Statement | JAN | Noxubee | 25 min |
| Jul 31, 1:32 PM CDT | Special Weather Statement | JAN | Morehouse | 43 min |
| Jul 31, 1:52 PM CDT | Severe Thunderstorm Warning | JAN | Morehouse, Richland, West Carroll | 53 min |
| Jul 31, 4:32 PM CDT | Special Weather Statement | JAN | Franklin, Madison, Tensas | 28 min |
| Jul 31, 1:27 PM CDT | Special Weather Statement | JAN | Ashley | 33 min |
Nearby
Severe Thunderstorm Warnings in Mississippi, 2020Every severe thunderstorm warning in 2020
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.