Alert archive / Alabama / Areal Flood Advisories in 2021

Areal Flood Advisory 34, NWS Mobile, AL

May 12, 2021Conecuh County, Covington County, Escambia County, Alabama; Escambia County, Okaloosa County, Santa Rosa County, Florida

NWS Mobile, AL issued this areal flood advisory at May 12, 2021, 6:52 AM CDT for Conecuh County, Covington County, Escambia County, Alabama; Escambia County, Okaloosa County, Santa Rosa County, Florida. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: May 12, 2021, 6:52 AM CDT (11:52 UTC)
Expired: May 12, 2021, 10:00 AM CDT
In force: 3 hr
Issued by: NWS Mobile, AL
Area: Storm-based polygon

Counties Conecuh County, AL, Covington County, AL, Escambia County, AL, Escambia County, FL, Okaloosa County, FL, Santa Rosa County, FL

The radar

The Eglin Afb radar (KEVX), 106 km from the middle of the area, began a volume at 11:52 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

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 11.9 hours before the alert went out and 259 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: 1708 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 617 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 83 m²/s²
0-3 km storm-relative helicity: 73 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 May 12, 6:36 AM CDT, 16 minutes earlier.

Area forecast discussion, May 12, 6:36 AM CDT, 16 minutes before

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In the hours before

Special weather statement, May 12, 2:55 AM CDT, 3 hours 57 minutes before

Special Weather Statement
National Weather Service Mobile AL
255 AM CDT Wed May 12 2021

ALZ052-053-262-120900-
Clarke AL-Baldwin Inland AL-Washington AL-
255 AM CDT Wed May 12 2021

...A STRONG THUNDERSTORM WILL AFFECT THE FOLLOWING COUNTIES...NORTH
CENTRAL BALDWIN...CENTRAL WASHINGTON AND SOUTHWESTERN CLARKE COUNTIES
UNTIL 400 AM CDT...

At 254 AM CDT, the strong thunderstorm was located 7 miles east of
Deer Park, or 11 miles north of Citronelle, moving northeast at 45
mph.

Winds in excess of 30 mph will be possible with this storm as well
as locally heavy rainfall.

Locations impacted include...
Jackson, Saint Stephens, Wagarville, Leroy, Deer Park, Tibbie and
McIntosh.

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 3170 8797 3115 8775 3115 8797 3117 8797
      3117 8799 3115 8802 3114 8830 3135 8837
TIME...MOT...LOC 0754Z 242DEG 39KT 3125 8820

Special weather statement, May 12, 3:31 AM CDT, 3 hours 21 minutes before

Special Weather Statement
National Weather Service Mobile AL
331 AM CDT Wed May 12 2021

ALZ052-053-261>266-MSZ079-120915-
Clarke AL-Mobile Coastal AL-Baldwin Coastal AL-Baldwin Central AL-
Baldwin Inland AL-Washington AL-Mobile Central AL-Mobile Inland AL-
George MS-
331 AM CDT Wed May 12 2021

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT THE FOLLOWING
COUNTIES...MOBILE...BALDWIN...SOUTHERN WASHINGTON...SOUTHERN CLARKE
AND EASTERN GEORGE COUNTIES UNTIL 415 AM CDT...

At 329 AM CDT, the strong thunderstorms were located along a line
extending from Movico to 4 miles east of Big Point, and moving east
at 65 mph.

Winds in excess of 30 mph will be possible with these storms as wekk
as locally heavy rainfall.

Locations impacted include...
Midtown Mobile, Downtown Mobile, Prichard, Daphne, Tillmans Corner,
Fairhope, Saraland, Bay Minette, Foley, Theodore, Chickasaw, Satsuma,
Spanish Fort, Robertsdale, Citronelle, Creola, Loxley, Chunchula,
Stockton and Stapleton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is 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 3042 8791 3075 8793 3065 8793 3072 8797
      3074 8803 3067 8802 3067 8803 3075 8804
      3074 8805 3066 8803 3045 8811 3050 8840
      3074 8841 3074 8852 3100 8847 3100 8842
      3126 8842 3126 8767 3038 8762
TIME...MOT...LOC 0829Z 290DEG 56KT 3107 8804 3059 8841

Special weather statement, May 12, 4:06 AM CDT, 2 hours 46 minutes before

Special Weather Statement
National Weather Service Mobile AL
406 AM CDT Wed May 12 2021

ALZ261>266-FLZ201-121000-
Mobile Coastal AL-Baldwin Coastal AL-Baldwin Central AL-
Baldwin Inland AL-Mobile Central AL-Mobile Inland AL-
Escambia Inland FL-
406 AM CDT Wed May 12 2021

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT THE FOLLOWING
COUNTIES...MOBILE...BALDWIN AND NORTHWESTERN ESCAMBIA COUNTIES UNTIL
500 AM CDT...

At 405 AM CDT, the strong thunderstorms were located along a line
extending from 4 miles west of Axis to 3 miles northwest of Midtown
Mobile to 5 miles northwest of Grand Bay, and moving east at 35 mph.

Wind gusts of 40 to 50 mph will be possible with these storms.

Locations impacted include...
Midtown Mobile, Prichard, Tillmans Corner, Saraland, Bay Minette,
Foley, Theodore, Chickasaw, Satsuma, Grand Bay, Robertsdale, Bayou La
Batre, Creola, Loxley, Chunchula, Stockton, Magnolia Springs,
Stapleton, Bon Secour and Axis.

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 3030 8773 3075 8793 3073 8804 3075 8804
      3025 8818 3025 8808 3023 8831 3025 8821
      3026 8818 3036 8819 3039 8840 3062 8841
      3111 8815 3098 8733 3048 8746 3025 8773
      3025 8771 3024 8772 3022 8803
TIME...MOT...LOC 0905Z 291DEG 31KT 3093 8810 3073 8817 3054 8839

Special weather statement, May 12, 5:04 AM CDT, 1 hour 48 minutes before

Special Weather Statement
National Weather Service Mobile AL
504 AM CDT Wed May 12 2021

ALZ055-056-059-262-264-266-FLZ201>204-121130-
Baldwin Coastal AL-Baldwin Central AL-Baldwin Inland AL-Monroe AL-
Conecuh AL-Escambia AL-Escambia Inland FL-Santa Rosa Coastal FL-
Escambia Coastal FL-Santa Rosa Inland FL-
504 AM CDT Wed May 12 2021

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT THE FOLLOWING
COUNTIES...SOUTH CENTRAL MONROE...SOUTHERN BALDWIN...ESCAMBIA...
SOUTHERN CONECUH...SANTA ROSA AND ESCAMBIA COUNTIES UNTIL 630 AM
CDT...

At 504 AM CDT, the strong thunderstorms were located along a line
extending from 4 miles west of Bratt to near Fort Morgan, and moving
east at 60 mph.

Wind gusts of 40 to 50 mph will be possible with these storms.

Locations impacted include...
Pensacola, Ferry Pass, Brent, West Pensacola, Ensley, Warrington,
Fairhope, Gonzalez, Atmore, Foley, Pace, Milton, Gulf Breeze,
Brewton, Orange Beach, Goulding, Robertsdale, Point Clear, Century
and Flomaton.

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 3030 8773 3030 8777 3036 8784 3041 8782
      3038 8784 3041 8791 3048 8794 3058 8791
      3144 8737 3131 8675 3041 8680 3038 8702
      3039 8690 3039 8680 3022 8803
TIME...MOT...LOC 1004Z 286DEG 54KT 3095 8751 3020 8805

Local storm report, May 12, 6:21 AM CDT, 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOBILE AL
621 AM CDT WED MAY 12 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0612 AM     TSTM WND GST     PENSACOLA INTERNATIONAL 30.48N 87.19W
05/12/2021  M58 MPH          ESCAMBIA           FL   ASOS

            PENSACOLA AIRPORT MEASURES THUNDERSTORM WIND
            GUST TO 58MPH.

&&

MM

Local storm report, May 12, 6:41 AM CDT, 11 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 12, 2:55 AM CDT	Special Weather Statement	MOB	Washington	65 min
May 12, 3:31 AM CDT	Special Weather Statement	MOB	Baldwin, Mobile	44 min
May 12, 3:46 AM CDT	Flash Flood Warning	MOB	Clarke, Washington	4 hr
May 12, 4:06 AM CDT	Special Weather Statement	MOB	Baldwin, Mobile	54 min
May 12, 4:12 AM CDT	Areal Flood Advisory	MOB	Baldwin, Mobile	3 hr
May 12, 4:20 AM CDT	Special Marine Warning	MOB		85 min
May 12, 4:41 AM CDT	Special Marine Warning	MOB		94 min
May 12, 4:56 AM CDT	Severe Thunderstorm Warning	MOB	Mobile	24 min
May 12, 5:01 AM CDT	Areal Flood Advisory	MOB	Baldwin, Escambia	3 hr
May 12, 5:04 AM CDT	Special Weather Statement	MOB	Baldwin, Escambia	86 min
May 12, 6:01 AM CDT	Severe Thunderstorm Warning	MOB	Conecuh, Covington, Escambia	44 min
May 12, 6:24 AM CDT	Special Marine Warning	MOB		96 min
May 12, 6:29 AM CDT	Severe Thunderstorm Warning	MOB	Covington	64 min
May 12, 6:35 AM CDT	Special Marine Warning	MOB		55 min
May 12, 6:56 AM CDT	Severe Thunderstorm Warning	MOB	Covington, Crenshaw	35 min
May 12, 7:18 AM CDT	Special Marine Warning	MOB		87 min
May 12, 6:11 AM CDT	Severe Thunderstorm Warning	MOB	Escambia, Santa Rosa	49 min
May 12, 6:21 AM CDT	Severe Thunderstorm Warning	MOB	Escambia, Santa Rosa	69 min
May 12, 6:41 AM CDT	Severe Thunderstorm Warning	MOB	Okaloosa, Santa Rosa	79 min
May 12, 1:24 AM CDT	Special Weather Statement	MOB	Perry, Stone	66 min
May 12, 2:35 AM CDT	Special Weather Statement	MOB	George	40 min
May 12, 3:13 AM CDT	Flash Flood Warning	MOB	George, Stone	5 hr

Nearby

Areal Flood Advisories in Alabama, 2021 Areal Flood Advisories in Florida, 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.