Alert archive / Mississippi / Areal Flood Advisories in 2021

Areal Flood Advisory 105, NWS Mobile, AL

July 9, 2021George County, Perry County, Stone County, Mississippi

NWS Mobile, AL issued this areal flood advisory at Jul 9, 2021, 1:56 PM CDT for George County, Perry County, Stone County, Mississippi. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: Jul 9, 2021, 1:56 PM CDT (18:56 UTC)
Expired: Jul 9, 2021, 5:00 PM CDT
In force: 3 hr
Issued by: NWS Mobile, AL
Area: Storm-based polygon

Counties George County, MS, Perry County, MS, Stone County, MS

The radar

The Mobile radar (KMOB), 71 km from the middle of the area, began a volume at 18:56 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 12:00Z, 6.9 hours before the alert went out and 107 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: 1386 J/kg
Mixed-layer CIN: -32 J/kg
Mixed-layer LCL: 1043 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 22 m²/s²
0-3 km storm-relative helicity: 20 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 areal flood advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Mobile, AL wrote its last area forecast discussion before this areal flood advisory went out at Jul 9, 1:06 PM CDT, 50 minutes earlier.

Area forecast discussion, Jul 9, 1:06 PM CDT, 50 minutes before

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In the hours before

Special weather statement, Jul 9, 12:55 PM CDT, 1 hour 1 minute before

Special Weather Statement
National Weather Service Mobile AL
1255 PM CDT Fri Jul 9 2021

ALZ059-FLZ203-091845-
Escambia AL-Santa Rosa Inland FL-
1255 PM CDT Fri Jul 9 2021

...A STRONG THUNDERSTORM WILL AFFECT THE FOLLOWING COUNTIES...EASTERN
ESCAMBIA AND NORTHEASTERN SANTA ROSA COUNTIES UNTIL 145 PM CDT...

At 1255 PM CDT, the strong thunderstorm was located near Pollard, or
4 miles southwest of Brewton, moving east at 20 mph.

Wind gusts of up to 40 mph will be possible with this storm.

Locations impacted include...
Brewton, East Brewton, Jay, Pollard and Riverview.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3100 8679 3090 8679 3093 8720 3097 8721
      3100 8716 3100 8722 3115 8725 3126 8694
      3126 8678 3100 8675
TIME...MOT...LOC 1755Z 266DEG 19KT 3107 8715

Special weather statement, Jul 9, 1:08 PM CDT, 48 minutes before

Special Weather Statement
National Weather Service Mobile AL
108 PM CDT Fri Jul 9 2021

MSZ075-078-079-091900-
Stone MS-Perry MS-George MS-
108 PM CDT Fri Jul 9 2021

...STRONG THUNDERSTORMS WILL AFFECT THE FOLLOWING COUNTIES...
SOUTHWESTERN GEORGE...SOUTHERN PERRY AND STONE COUNTIES UNTIL 200 PM
CDT...

At 107 PM CDT, strong thunderstorms were located 7 miles west of
Saucier, or 14 miles southwest of Wiggins, moving northeast at 30
mph.

Wind gusts of up to 40 mph will be possible with this storm.

Locations impacted include...
Wiggins, Perkinston and McHenry.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms, and may
lead to localized flooding. Do not drive your vehicle through
flooded roadways.

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3091 8934 3091 8914 3115 8914 3074 8860
      3073 8861 3074 8888 3068 8889 3068 8924
      3065 8924 3065 8934
TIME...MOT...LOC 1807Z 221DEG 26KT 3067 8925

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 9, 12:55 PM CDT	Special Weather Statement	MOB	Escambia	50 min
Jul 9, 5:45 PM CDT	Special Marine Warning	MOB		90 min
Jul 9, 2:36 PM CDT	Special Weather Statement	MOB	Santa Rosa	39 min
Jul 9, 3:21 PM CDT	Areal Flood Advisory	MOB	Santa Rosa	3 hr
Jul 9, 1:08 PM CDT	Special Weather Statement	MOB	Stone	52 min

Nearby

Areal Flood Advisories in Mississippi, 2021 Every areal flood advisory in 2021

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.