Alert archive / Mississippi / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 349, NWS Jackson, MS

July 4, 2020Issaquena County, Washington County, Mississippi; East Carroll Parish, West Carroll Parish, Louisiana; Chicot County, Arkansas

NWS Jackson, MS issued this severe thunderstorm warning at Jul 4, 2020, 3:04 PM CDT for Issaquena County, Washington County, Mississippi; East Carroll Parish, West Carroll Parish, Louisiana; Chicot County, Arkansas. It was in force for 41 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 4, 2020, 3:04 PM CDT (20:04 UTC)
Expired: Jul 4, 2020, 3:45 PM CDT
In force: 41 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Hail: 0.88 in
Wind: 60.0 mph

Counties Chicot County, AR, East Carroll Parish, LA, West Carroll Parish, LA, Issaquena County, MS, Washington County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 136 km from the middle of the area, began a volume at 20:06 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 nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 8.1 hours before the alert went out and 126 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 834 J/kg
Mixed-layer CIN: -53 J/kg
Mixed-layer LCL: 717 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: 17 m²/s²
0-3 km storm-relative helicity: 23 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 4, 1:09 PM CDT, 1 hour 55 minutes earlier.

Area forecast discussion, Jul 4, 1:09 PM CDT, 1 hour 55 minutes before

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Hazardous weather outlook, Jul 4, 2:33 PM CDT, 31 minutes before

Hazardous Weather Outlook
National Weather Service Jackson MS
233 PM CDT Sat Jul 4 2020

ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074-
051945-
Ashley-Chicot-Morehouse-West Carroll-East Carroll-Richland-
Madison LA-Franklin LA-Catahoula-Tensas-Concordia-Bolivar-
Sunflower-Leflore-Grenada-Carroll-Montgomery-Webster-Clay-Lowndes-
Choctaw-Oktibbeha-Washington-Humphreys-Holmes-Attala-Winston-
Noxubee-Issaquena-Sharkey-Yazoo-Madison MS-Leake-Neshoba-Kemper-
Warren-Hinds-Rankin-Scott-Newton-Lauderdale-Claiborne-Copiah-
Simpson-Smith-Jasper-Clarke-Jefferson-Adams-Franklin MS-Lincoln-
Lawrence-Jefferson Davis-Covington-Jones-Marion-Lamar-Forrest-
233 PM CDT Sat Jul 4 2020

This hazardous weather outlook is for portions of southeast
Arkansas, northeast Louisiana, central Mississippi, north central
Mississippi, and south central Mississippi.

.DAY ONE...Tonight and Sunday

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Sunday night through Friday

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 Friday.

21

&&

...HAZARD LEGEND...

No short term hazards expected.

...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

In the hours before

Special weather statement, Jul 4, 2:17 PM CDT, 47 minutes before

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Special weather statement, Jul 4, 2:28 PM CDT, 36 minutes before

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Special weather statement, Jul 4, 2:36 PM CDT, 28 minutes before

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Special weather statement, Jul 4, 2:41 PM CDT, 23 minutes before

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Special weather statement, Jul 4, 2:55 PM CDT, 9 minutes before

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Special weather statement, Jul 4, 3:00 PM CDT, 4 minutes before

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The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 3, 7:23 PM CDT	Special Weather Statement	JAN	Lauderdale	37 min
Jul 3, 9:08 PM CDT	Special Weather Statement	JAN	Attala	37 min
Jul 3, 9:29 PM CDT	Special Weather Statement	JAN	Attala, Montgomery	31 min
Jul 3, 9:36 PM CDT	Flash Flood Warning	JAN	Attala, Choctaw	117 min
Jul 4, 9:41 AM CDT	River Flood Warning	JAN	Leake	9 days
Jul 4, 12:41 PM CDT	Special Weather Statement	JAN	Sharkey	49 min
Jul 4, 12:58 PM CDT	Special Weather Statement	JAN	Simpson	47 min
Jul 4, 2:17 PM CDT	Special Weather Statement	JAN	Warren	28 min
Jul 4, 2:28 PM CDT	Special Weather Statement	JAN	Hinds	32 min
Jul 4, 2:36 PM CDT	Special Weather Statement	JAN	Franklin	24 min
Jul 4, 2:41 PM CDT	Special Weather Statement	JAN	Lowndes	34 min
Jul 4, 3:00 PM CDT	Special Weather Statement	JAN	Hinds	30 min
Jul 4, 3:34 PM CDT	Special Weather Statement	JAN	Claiborne	26 min
Jul 4, 4:07 PM CDT	Special Weather Statement	JAN	Rankin	23 min
Jul 4, 4:13 PM CDT	Special Weather Statement	JAN	Lamar, Marion	32 min
Jul 4, 4:48 PM CDT	Special Weather Statement	JAN	Holmes	27 min
Jul 4, 4:52 PM CDT	Severe Thunderstorm Warning	JAN	Newton, Scott	38 min
Jul 4, 5:20 PM CDT	Special Weather Statement	JAN	Holmes	25 min
Jul 4, 5:28 PM CDT	Flash Flood Warning	JAN	Marion	2 hr
Jul 4, 5:37 PM CDT	Special Weather Statement	JAN	Attala	38 min
Jul 4, 5:48 PM CDT	Special Weather Statement	JAN	Holmes	27 min
Jul 4, 5:52 PM CDT	Flash Flood Warning	JAN	Holmes	4 hr
Jul 4, 6:06 PM CDT	Flash Flood Warning	JAN	Rankin, Scott	112 min
Jul 4, 6:14 PM CDT	Special Weather Statement	JAN	Holmes	31 min
Jul 4, 6:58 PM CDT	Flash Flood Warning	JAN	Winston	3 hr
Jul 4, 4:01 PM CDT	Special Weather Statement	JAN	East Carroll, Madison	29 min
Jul 4, 5:57 PM CDT	Special Weather Statement	JAN	West Carroll	33 min
Jul 4, 6:32 PM CDT	Special Weather Statement	JAN	West Carroll	28 min
Jul 4, 2:12 PM CDT	Special Weather Statement	JAN	Chicot	48 min
Jul 4, 2:55 PM CDT	Special Weather Statement	JAN	Chicot	35 min
Jul 4, 3:58 PM CDT	Special Weather Statement	JAN	Chicot	32 min
Jul 4, 4:55 PM CDT	Special Weather Statement	JAN	Ashley	35 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2020 Severe Thunderstorm Warnings in Louisiana, 2020 Severe Thunderstorm Warnings in Arkansas, 2020 Every 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.