Alert archive / Mississippi / Flash Flood Warnings in 2026

Flash Flood Warning 51, NWS Jackson, MS

August 20, 2026Choctaw County, Montgomery County, Webster County, Mississippi

NWS Jackson, MS issued this flash flood warning at Aug 20, 2026, 8:22 PM CDT for Choctaw County, Montgomery County, Webster County, Mississippi. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Aug 20, 2026, 8:22 PM CDT (01:22 UTC)
Expired: Aug 20, 2026, 10:30 PM CDT
In force: 2 hr
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Flood severity: None

Counties Choctaw County, MS, Montgomery County, MS, Webster County, MS

The radar

The Columbus AFB radar (KGWX), 108 km from the middle of the area, began a volume at 01:26 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 00:00Z, 1.4 hours before the alert went out and 145 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: 1618 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 2146 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: -18 m²/s²
0-3 km storm-relative helicity: 7 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 flash flood 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 flash flood warning went out at Aug 20, 3:30 PM CDT, 4 hours 52 minutes earlier.

Area forecast discussion, Aug 20, 3:30 PM CDT, 4 hours 52 minutes before

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In the hours before

Local storm report, Aug 20, 6:38 PM CDT, 1 hour 44 minutes before

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Local storm report, Aug 20, 6:54 PM CDT, 1 hour 28 minutes before

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Special weather statement, Aug 20, 7:04 PM CDT, 1 hour 18 minutes before

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Special weather statement, Aug 20, 7:11 PM CDT, 1 hour 11 minutes before

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Local storm report, Aug 20, 7:42 PM CDT, 40 minutes before

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Local storm report, Aug 20, 8:12 PM CDT, 10 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
Aug 20, 7:04 PM CDT	Special Weather Statement	JAN	Attala, Leake	56 min
Aug 20, 7:07 PM CDT	Severe Thunderstorm Warning	JAN	Attala, Carroll, Choctaw, Holmes, Leake, Montgomery and 1 more	68 min
Aug 20, 7:08 PM CDT	Severe Thunderstorm Warning	JAN	Franklin, Jefferson Davis, Lamar, Lawrence, Lincoln, Marion	67 min
Aug 20, 7:11 PM CDT	Special Weather Statement	JAN	Clarke	64 min
Aug 20, 7:26 PM CDT	Severe Thunderstorm Warning	JAN	Rankin, Simpson	52 min
Aug 20, 7:32 PM CDT	Severe Thunderstorm Warning	JAN	Clarke, Covington, Jasper, Jones, Smith	58 min
Aug 20, 7:36 PM CDT	Severe Thunderstorm Warning	JAN	Carroll, Choctaw, Grenada, Montgomery, Webster	54 min
Aug 20, 7:44 PM CDT	Severe Thunderstorm Warning	JAN	Copiah, Lincoln	61 min
Aug 20, 7:48 PM CDT	Severe Thunderstorm Warning	JAN	Clarke, Jasper, Lauderdale, Newton, Scott, Smith	57 min
Aug 20, 8:05 PM CDT	Severe Thunderstorm Warning	JAN	Attala, Carroll, Choctaw, Holmes, Leake, Montgomery and 2 more	55 min
Aug 20, 8:15 PM CDT	Severe Thunderstorm Warning	JAN	Rankin, Scott, Simpson, Smith	60 min
Aug 20, 8:23 PM CDT	Severe Thunderstorm Warning	JAN	Carroll, Choctaw, Montgomery, Webster	52 min
Aug 20, 8:26 PM CDT	Severe Thunderstorm Warning	JAN	Covington, Jasper, Jones, Smith	64 min
Aug 20, 8:36 PM CDT	Severe Thunderstorm Warning	JAN	Jasper, Newton, Scott, Smith	54 min
Aug 20, 8:38 PM CDT	Special Weather Statement	JAN	Marion	67 min
Aug 20, 8:46 PM CDT	Severe Thunderstorm Warning	JAN	Kemper, Lauderdale, Leake, Neshoba, Newton, Scott and 1 more	59 min
Aug 20, 8:47 PM CDT	Special Weather Statement	JAN	Lawrence, Lincoln	58 min
Aug 20, 8:49 PM CDT	Severe Thunderstorm Warning	JAN	Attala, Carroll, Choctaw, Holmes, Leake, Madison and 4 more	56 min
Aug 20, 9:00 PM CDT	Special Weather Statement	JAN	Madison	60 min
Aug 20, 9:08 PM CDT	Severe Thunderstorm Warning	JAN	Covington, Jefferson Davis, Lawrence, Rankin, Scott, Simpson and 1 more	67 min
Aug 20, 9:20 PM CDT	Severe Thunderstorm Warning	JAN	Leake, Madison, Rankin, Scott	55 min
Aug 20, 9:36 PM CDT	Special Weather Statement	JAN	Attala, Choctaw, Holmes, Winston	54 min
Aug 20, 9:38 PM CDT	Severe Thunderstorm Warning	JAN	Kemper, Lauderdale, Leake, Neshoba, Newton, Scott	82 min
Aug 20, 9:42 PM CDT	Severe Thunderstorm Warning	JAN	Carroll, Holmes, Madison, Yazoo	63 min
Aug 20, 10:12 PM CDT	Severe Thunderstorm Warning	JAN	Hinds, Leake, Madison, Rankin, Scott, Smith	78 min
Aug 20, 10:38 PM CDT	Severe Thunderstorm Warning	JAN	Hinds, Madison, Yazoo	82 min
Aug 20, 11:08 PM CDT	Special Weather Statement	JAN	Newton, Rankin, Scott	67 min
Aug 20, 11:09 PM CDT	Special Weather Statement	JAN	Bolivar, Washington	66 min
Aug 20, 11:25 PM CDT	Special Weather Statement	JAN	Madison, Rankin	65 min
Aug 21, 12:27 AM CDT	Special Weather Statement	JAN	Humphreys, Issaquena, Sharkey, Washington	63 min
Aug 21, 2:06 AM CDT	Special Weather Statement	JAN	Webster	69 min
Aug 21, 3:08 AM CDT	Severe Thunderstorm Warning	JAN	Clay, Lowndes, Oktibbeha	67 min
Aug 21, 4:08 AM CDT	Special Weather Statement	JAN	Lowndes	37 min
Aug 21, 4:24 AM CDT	Severe Thunderstorm Warning	JAN	Kemper	36 min
Aug 21, 12:58 PM CDT	Heat Advisory	JAN	Adams, Bolivar, Claiborne, Copiah, Franklin, Hinds and 17 more	31 hr
Aug 21, 1:49 PM CDT	Special Weather Statement	JAN	Jefferson Davis	26 min
Aug 21, 2:00 PM CDT	Severe Thunderstorm Warning	JAN	Covington, Jefferson Davis	60 min
Aug 21, 2:32 PM CDT	Severe Thunderstorm Warning	JAN	Adams	58 min
Aug 21, 2:38 PM CDT	Severe Thunderstorm Warning	JAN	Warren	52 min
Aug 21, 2:38 PM CDT	Severe Thunderstorm Warning	JAN	Claiborne, Jefferson	52 min
Aug 21, 2:46 PM CDT	Severe Thunderstorm Warning	JAN	Covington, Jefferson Davis, Lamar, Marion	59 min
Aug 21, 2:49 PM CDT	Severe Thunderstorm Warning	JAN	Covington, Jefferson Davis, Simpson, Smith	56 min
Aug 21, 2:58 PM CDT	Severe Thunderstorm Warning	JAN	Hinds	62 min
Aug 21, 3:02 PM CDT	Severe Thunderstorm Warning	JAN	Lawrence, Lincoln, Marion	58 min
Aug 21, 3:07 PM CDT	Severe Thunderstorm Warning	JAN	Covington, Forrest, Jones	53 min
Aug 21, 3:16 PM CDT	Severe Thunderstorm Warning	JAN	Claiborne, Copiah, Hinds, Warren	59 min
Aug 21, 3:24 PM CDT	Severe Thunderstorm Warning	JAN	Adams	51 min
Aug 21, 3:29 PM CDT	Severe Thunderstorm Warning	JAN	Covington, Jones	61 min
Aug 21, 3:31 PM CDT	Severe Thunderstorm Warning	JAN	Warren	44 min
Aug 21, 3:34 PM CDT	Special Weather Statement	JAN	Simpson	56 min
Aug 21, 3:36 PM CDT	Severe Thunderstorm Warning	JAN	Jasper, Smith	54 min
Aug 21, 3:39 PM CDT	Severe Thunderstorm Warning	JAN	Copiah, Hinds, Rankin, Simpson	66 min
Aug 21, 3:44 PM CDT	Severe Thunderstorm Warning	JAN	Forrest, Lamar, Marion	72 min
Aug 21, 3:51 PM CDT	Severe Thunderstorm Warning	JAN	Jefferson Davis, Lawrence, Lincoln, Simpson	54 min
Aug 21, 3:59 PM CDT	Severe Thunderstorm Warning Considerable damage threat	JAN	Lawrence, Marion	61 min
Aug 21, 4:04 PM CDT	Severe Thunderstorm Warning	JAN	Adams, Claiborne, Jefferson	56 min
Aug 21, 4:10 PM CDT	Severe Thunderstorm Warning	JAN	Claiborne, Copiah, Jefferson, Warren	50 min
Aug 21, 4:12 PM CDT	Severe Thunderstorm Warning	JAN	Covington, Jefferson Davis, Simpson, Smith	63 min
Aug 21, 4:14 PM CDT	Severe Thunderstorm Warning	JAN	Adams, Copiah, Franklin, Jefferson, Lincoln	61 min
Aug 21, 4:26 PM CDT	Special Weather Statement	JAN	Newton	64 min
Aug 21, 4:26 PM CDT	Special Weather Statement	JAN	Kemper	64 min
Aug 21, 4:33 PM CDT	Severe Thunderstorm Warning	JAN	Rankin, Scott, Smith	42 min
Aug 21, 4:35 PM CDT	Severe Thunderstorm Warning	JAN	Copiah, Jefferson Davis, Lawrence, Lincoln, Marion	40 min
Aug 21, 4:43 PM CDT	Severe Thunderstorm Warning	JAN	Smith	29 min
Aug 21, 4:57 PM CDT	Severe Thunderstorm Warning	JAN	Forrest	48 min
Aug 21, 5:06 PM CDT	Flash Flood Warning	JAN	Simpson	73 min
Aug 21, 5:13 PM CDT	Severe Thunderstorm Warning Considerable damage threat	JAN	Adams, Franklin, Jefferson, Lawrence, Lincoln, Marion	46 min
Aug 21, 5:33 PM CDT	Special Weather Statement	JAN	Jasper	42 min
Aug 21, 2:12 PM CDT	Special Weather Statement	JAN	Catahoula	33 min
Aug 21, 2:44 PM CDT	Severe Thunderstorm Warning	JAN	Franklin, Madison, Morehouse, Richland	46 min
Aug 21, 3:44 PM CDT	Special Weather Statement	JAN	Tensas	46 min

Nearby

Flash Flood Warnings in Mississippi, 2026 Every flash flood warning in 2026

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.