Alert archive / Alabama / Areal Flood Advisories in 2021

Areal Flood Advisory 94, NWS Mobile, AL

July 5, 2021Baldwin County, Alabama

NWS Mobile, AL issued this areal flood advisory at Jul 5, 2021, 6:10 PM CDT for Baldwin County, Alabama. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: Jul 5, 2021, 6:10 PM CDT (23:10 UTC)
Expired: Jul 5, 2021, 9:15 PM CDT
In force: 3 hr
Issued by: NWS Mobile, AL
Area: Storm-based polygon

County Baldwin County, AL

The radar

The Mobile radar (KMOB), 47 km from the middle of the area, began a volume at 23:13 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, 11.2 hours before the alert went out and 192 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: 1061 J/kg
Mixed-layer CIN: -29 J/kg
Mixed-layer LCL: 611 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: -19 m²/s²
0-3 km storm-relative helicity: -9 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 5, 4:03 PM CDT, 2 hours 7 minutes earlier.

Area forecast discussion, Jul 5, 4:03 PM CDT, 2 hours 7 minutes before

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In the hours before

Special weather statement, Jul 5, 1:52 PM CDT, 4 hours 18 minutes before

Special Weather Statement
National Weather Service Mobile AL
152 PM CDT Mon Jul 5 2021

ALZ052-053-261-262-051945-
Clarke AL-Baldwin Inland AL-Washington AL-Mobile Inland AL-
152 PM CDT Mon Jul 5 2021

...A STRONG THUNDERSTORM WILL AFFECT THE FOLLOWING COUNTIES...
NORTHEASTERN MOBILE...NORTHWESTERN BALDWIN...SOUTHEASTERN WASHINGTON
AND SOUTH CENTRAL CLARKE COUNTIES UNTIL 245 PM CDT...

At 152 PM CDT, the strong thunderstorm was located 11 miles east of
Calvert, or 21 miles north of Bay Minette, moving northwest at 15
mph.

Dime size hail and wind gusts of 40 to 50 mph will be possible with
this storm.

Locations impacted include...
Stockton, Mount Vernon, Calvert, McIntosh, Movico and I65 And AL 225.

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 3106 8820 3144 8805 3132 8778 3131 8778
      3130 8777 3130 8774 3129 8771 3092 8783
TIME...MOT...LOC 1852Z 114DEG 13KT 3119 8781

Special weather statement, Jul 5, 2:07 PM CDT, 4 hours 3 minutes before

Special Weather Statement
National Weather Service Mobile AL
207 PM CDT Mon Jul 5 2021

MSZ076-051945-
Greene MS-
207 PM CDT Mon Jul 5 2021

...A STRONG THUNDERSTORM WILL AFFECT THE FOLLOWING COUNTIES...
NORTHERN GREENE COUNTY UNTIL 245 PM CDT...

At 207 PM CDT, the strong thunderstorm was located 7 miles northeast
of Leakesville, moving northwest at 15 mph.

Dime size hail and wind gusts of 40 to 50 mph will be possible with
this storm.

This storm will remain over mainly rural areas of northern Greene
County.

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 3144 8873 3144 8864 3130 8844 3122 8844
      3118 8847 3124 8884
TIME...MOT...LOC 1907Z 114DEG 13KT 3126 8850

Special weather statement, Jul 5, 2:46 PM CDT, 3 hours 24 minutes before

Special Weather Statement
National Weather Service Mobile AL
246 PM CDT Mon Jul 5 2021

ALZ052-261-052030-
Washington AL-Mobile Inland AL-
246 PM CDT Mon Jul 5 2021

...A STRONG THUNDERSTORM WILL AFFECT THE FOLLOWING COUNTIES...
NORTHWESTERN MOBILE AND SOUTHWESTERN WASHINGTON COUNTIES UNTIL 330 PM
CDT...

At 246 PM CDT, the strong thunderstorm was located 8 miles southwest
of McIntosh, or 8 miles northeast of Citronelle. This storm was
nearly stationary.

Dime size hail and wind gusts of 40 to 50 mph will be possible with
this storm.

Locations impacted include...
Citronelle, Chatom, Deer Park and Tibbie.

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 3132 8802 3102 8813 3110 8843 3116 8843
      3153 8832
TIME...MOT...LOC 1946Z 114DEG 0KT 3120 8815

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 4, 7:02 PM CDT	Areal Flood Advisory	MOB	Baldwin	3 hr
Jul 4, 7:27 PM CDT	Areal Flood Advisory	MOB	Mobile	3 hr
Jul 4, 8:16 PM CDT	Areal Flood Advisory	MOB	Monroe	3 hr
Jul 4, 8:43 PM CDT	Areal Flood Advisory	MOB	Conecuh	3 hr
Jul 4, 8:44 PM CDT	Areal Flood Advisory	MOB	Mobile	3 hr
Jul 5, 1:52 PM CDT	Special Weather Statement	MOB	Washington	53 min
Jul 5, 2:46 PM CDT	Special Weather Statement	MOB	Washington	44 min
Jul 5, 3:11 PM CDT	Severe Thunderstorm Warning	MOB	Mobile, Washington	20 min
Jul 5, 8:35 AM CDT	Areal Flood Advisory	MOB	Okaloosa, Santa Rosa	3 hr
Jul 5, 9:36 AM CDT	Flash Flood Warning	MOB	Okaloosa, Santa Rosa	5 hr
Jul 5, 11:12 AM CDT	Areal Flood Advisory	MOB	Escambia, Santa Rosa	3 hr
Jul 5, 12:32 PM CDT	Areal Flood Advisory	MOB	Escambia	3 hr
Jul 5, 2:07 PM CDT	Special Weather Statement	MOB	Greene	38 min
Jul 5, 4:25 PM CDT	Severe Thunderstorm Warning	MOB	Wayne	37 min

Nearby

Areal Flood Advisories in Alabama, 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.