Alert archive / Alabama / Areal Flood Advisories in 2021

Areal Flood Advisory 168, NWS Mobile, AL

August 11, 2021Butler County, Crenshaw County, Alabama

NWS Mobile, AL issued this areal flood advisory at Aug 11, 2021, 7:56 PM CDT for Butler County, Crenshaw County, Alabama. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Aug 11, 2021, 7:56 PM CDT (00:56 UTC)
Expired
Aug 11, 2021, 11:00 PM CDT
In force
3 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon

Counties Butler County, AL, Crenshaw County, AL

The radar

The Ft Rucker radar (KEOX), 103 km from the middle of the area, began a volume at 00:56 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

Birmingham, AL (KBMX), launched 00:00Z, 0.9 hours before the alert went out and 162 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-pSkew-T log-p diagram, Birmingham, AL at 00:00Z on 2021-08-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 71 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 00:00Z on 2021-08-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
71 J/kg
Mixed-layer CIN
-232 J/kg
Mixed-layer LCL
1550 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
28 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 Aug 11, 6:51 PM CDT, 1 hour 5 minutes earlier.

Area forecast discussion, Aug 11, 6:51 PM CDT, 1 hour 5 minutes before
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In the hours before

Special weather statement, Aug 11, 4:40 PM CDT, 3 hours 16 minutes before
Special Weather Statement
National Weather Service Mobile AL
440 PM CDT Wed Aug 11 2021

ALZ054-112215-
Wilcox AL-
440 PM CDT Wed Aug 11 2021

...A strong thunderstorm will impact portions of northwestern Wilcox
County through 515 PM CDT...

At 439 PM CDT, Doppler radar was tracking a strong thunderstorm 5
miles southeast of Consul, or 17 miles south of Uniontown, moving
northwest at 10 mph.

HAZARD...Winds in excess of 30 mph.

SOURCE...Radar indicated.

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

This storm will remain over mainly rural areas of northwestern Wilcox
County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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 3224 8741 3224 8739 3222 8739 3222 8737
      3220 8736 3220 8733 3218 8732 3205 8751
      3213 8760 3213 8752 3226 8752 3227 8751
      3226 8746 3227 8744
TIME...MOT...LOC 2139Z 145DEG 9KT 3220 8750

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...30 MPH
Special weather statement, Aug 11, 5:15 PM CDT, 2 hours 41 minutes before
Special Weather Statement
National Weather Service Mobile AL
515 PM CDT Wed Aug 11 2021

ALZ054-112300-
Wilcox AL-
515 PM CDT Wed Aug 11 2021

...Strong thunderstorms will impact portions of northwestern Wilcox
County through 600 PM CDT...

At 514 PM CDT, Doppler radar was tracking strong thunderstorms 6
miles northwest of Camden, moving northwest at 10 mph.

HAZARD...Winds in excess of 30 mph.

SOURCE...Radar indicated.

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

Locations impacted include...
Camden.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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 3225 8742 3224 8739 3220 8736 3220 8733
      3214 8728 3214 8725 3212 8726 3212 8725
      3210 8723 3208 8719 3207 8719 3205 8717
      3193 8737 3212 8763 3213 8762 3213 8752
      3226 8752 3227 8751 3227 8744
TIME...MOT...LOC 2214Z 149DEG 10KT 3207 8734

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...30 MPH
Special weather statement, Aug 11, 5:56 PM CDT, 2 hours before
Special Weather Statement
National Weather Service Mobile AL
556 PM CDT Wed Aug 11 2021

ALZ056-057-112345-
Conecuh AL-Butler AL-
556 PM CDT Wed Aug 11 2021

...A strong thunderstorm will impact portions of southwestern Butler
and central Conecuh Counties through 645 PM CDT...

At 556 PM CDT, Doppler radar was tracking a strong thunderstorm over
Evergreen, moving north at 15 mph.

HAZARD...Winds in excess of 30 mph.

SOURCE...Radar indicated.

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

Locations impacted include...
Evergreen, Georgiana and I65 And US 84.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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 3168 8672 3140 8687 3141 8703 3172 8704
      3172 8701
TIME...MOT...LOC 2256Z 191DEG 13KT 3147 8695

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...30 MPH
Special weather statement, Aug 11, 6:12 PM CDT, 1 hour 44 minutes before
Special Weather Statement
National Weather Service Mobile AL
612 PM CDT Wed Aug 11 2021

ALZ058-120000-
Crenshaw AL-
612 PM CDT Wed Aug 11 2021

...A strong thunderstorm will impact portions of northern Crenshaw
County through 700 PM CDT...

At 612 PM CDT, Doppler radar was tracking a strong thunderstorm near
Troy Municipal Airport, or 5 miles west of Troy, moving west at 15
mph.

HAZARD...Winds in excess of 30 mph.

SOURCE...Radar indicated.

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

Locations impacted include...
Luverne, Rutledge, Petrey and Highland Home.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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 3163 8632 3196 8644 3197 8640 3203 8641
      3204 8640 3204 8641 3205 8640 3205 8630
      3197 8630 3196 8619 3193 8618 3183 8618
      3181 8620 3179 8620 3179 8615 3169 8615
TIME...MOT...LOC 2312Z 075DEG 14KT 3184 8606

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...30 MPH
Special weather statement, Aug 11, 7:46 PM CDT, 10 minutes before
Special Weather Statement
National Weather Service Mobile AL
746 PM CDT Wed Aug 11 2021

ALZ057-058-060-120130-
Butler AL-Covington AL-Crenshaw AL-
746 PM CDT Wed Aug 11 2021

...Strong thunderstorms will impact portions of southeastern Butler,
southern Crenshaw and northern Covington Counties through 830 PM
CDT...

At 746 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 6 miles east of McKenzie to 4 miles southwest
of Brantley. Movement was northwest at 10 mph.

HAZARD...Winds in excess of 30 mph.

SOURCE...Radar indicated.

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

Locations impacted include...
Brantley and Dozier.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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 3154 8616 3153 8616 3153 8620 3141 8620
      3146 8665 3173 8672 3163 8620 3162 8618
      3162 8614 3154 8614
TIME...MOT...LOC 0046Z 116DEG 9KT 3155 8661 3153 8629

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...30 MPH
Special weather statement, Aug 11, 7:47 PM CDT, 9 minutes before
Special Weather Statement
National Weather Service Mobile AL
747 PM CDT Wed Aug 11 2021

ALZ056-057-060-120130-
Conecuh AL-Butler AL-Covington AL-
747 PM CDT Wed Aug 11 2021

...A strong thunderstorm will impact portions of south central
Butler, east central Conecuh and northwestern Covington Counties
through 830 PM CDT...

At 747 PM CDT, Doppler radar was tracking a strong thunderstorm near
McKenzie, or 13 miles east of Evergreen, moving south at 5 mph.

HAZARD...Winds in excess of 30 mph.

SOURCE...Radar indicated.

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

Locations impacted include...
McKenzie.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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 3160 8678 3156 8665 3129 8664 3137 8695
TIME...MOT...LOC 0047Z 015DEG 6KT 3150 8674

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...30 MPH

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 11, 7:01 PM CDTSevere Thunderstorm WarningMOBButler, Covington, Crenshaw44 min
Aug 11, 7:30 PM CDTSevere Thunderstorm WarningMOBButler, Crenshaw45 min
Aug 11, 7:46 PM CDTSpecial Weather StatementMOBCrenshaw44 min
Aug 11, 7:47 PM CDTSpecial Weather StatementMOBConecuh43 min
Aug 11, 8:01 PM CDTSpecial Weather StatementMOBButler44 min
Aug 11, 8:09 PM CDTFlash Flood WarningMOBButler3 hr
Aug 12, 9:42 AM CDTSpecial Marine WarningMOB63 min
Aug 12, 12:31 PM CDTSpecial Weather StatementMOBEscambia59 min
Aug 12, 6:03 PM CDTSpecial Weather StatementMOBCrenshaw57 min
Aug 12, 11:46 AM CDTSpecial Weather StatementMOBGeorge, Greene, Stone44 min
Aug 12, 2:19 PM CDTSpecial Weather StatementMOBWayne41 min

Nearby

Areal Flood Advisories in Alabama, 2021Every 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.