Alert archive / Mississippi / Flash Flood Warnings in 2026

Flash Flood Warning 20, NWS New Orleans, LA

April 5, 2026Harrison County, Jackson County, Mississippi

NWS New Orleans, LA issued this flash flood warning at Apr 5, 2026, 4:37 AM CDT for Harrison County, Jackson County, Mississippi. It was in force for 113 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: Apr 5, 2026, 4:37 AM CDT (09:37 UTC)
Expired: Apr 5, 2026, 6:30 AM CDT
In force: 113 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon
Flood severity: None

Counties Harrison County, MS, Jackson County, MS

The radar

The Mobile radar (KMOB), 64 km from the middle of the area, began a volume at 09:36 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

Slidell Radar S, LA (KSIL), launched 00:00Z, 9.6 hours before the alert went out and 84 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: 1435 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 664 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 82 m²/s²
0-3 km storm-relative helicity: 117 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 New Orleans, LA wrote its last area forecast discussion before this flash flood warning went out at Apr 5, 12:42 AM CDT, 3 hours 55 minutes earlier.

Area forecast discussion, Apr 5, 12:42 AM CDT, 3 hours 55 minutes before

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In the hours before

Special weather statement, Apr 4, 11:01 PM CDT, 5 hours 36 minutes before

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Special weather statement, Apr 4, 11:10 PM CDT, 5 hours 27 minutes before

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Special weather statement, Apr 5, 1:18 AM CDT, 3 hours 19 minutes before

Special Weather Statement
National Weather Service New Orleans LA
118 AM CDT Sun Apr 5 2026

MSZ084-085-087-088-050715-
Southern Harrison MS-Northern Jackson MS-Southern Jackson MS-
Northern Harrison MS-
118 AM CDT Sun Apr 5 2026

...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF EASTERN HARRISON AND
JACKSON COUNTIES THROUGH 215 AM CDT
...

At 118 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 6 miles west of Wade to Biloxi. Movement was
east at 10 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Gulfport, Biloxi, Pascagoula, Ocean Springs, Moss Point, St. Martin,
Escatawpa, Gautier, D'iberville, Wade, Latimer, Big Point, Helena,
Gulf Hills, Hurley, Vancleave, Gulf Park Estates, Hickory Hills,
Lyman, and Gulfport Airport.

This includes the following Interstates...
 Interstate 10 in Mississippi between mile markers 29 and 76.
 Interstate 110 in Mississippi between mile markers 1 and 4.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3032 8841 3031 8844 3034 8863 3033 8873
      3035 8880 3034 8883 3036 8887 3036 8908
      3043 8922 3074 8879 3074 8841 3046 8840
      3038 8841 3035 8839
TIME...MOT...LOC 0618Z 269DEG 9KT 3068 8866 3044 8898

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

MEFFER

The office that day

Everything else NWS New Orleans, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 4, 8:01 PM CDT	Areal Flood Advisory	LIX	East Feliciana, West Feliciana	29 min
Apr 4, 8:22 PM CDT	Special Weather Statement	LIX	Washington	38 min
Apr 4, 8:26 PM CDT	Tornado Warning	LIX	Washington	31 min
Apr 4, 8:36 PM CDT	Tornado Warning	LIX	Washington	21 min
Apr 4, 9:01 PM CDT	Special Weather Statement	LIX	Washington	44 min
Apr 4, 11:10 PM CDT	Special Weather Statement	LIX	Jefferson	65 min
Apr 4, 9:09 PM CDT	Tornado Warning	LIX	Pearl River	51 min
Apr 4, 9:30 PM CDT	Tornado Warning	LIX	Pearl River	45 min
Apr 4, 10:07 PM CDT	Special Weather Statement	LIX	Pearl River	38 min
Apr 4, 10:19 PM CDT	Special Weather Statement	LIX	Hancock	41 min
Apr 4, 11:01 PM CDT	Special Weather Statement	LIX	Hancock	44 min
Apr 5, 1:18 AM CDT	Special Weather Statement	LIX	Harrison, Jackson	57 min
Apr 5, 3:16 AM CDT	Areal Flood Advisory	LIX	Harrison, Jackson	81 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.