Alert archive / Alabama / Flash Flood Warnings in 2023

Flash Flood Warning 13, NWS Birmingham, AL

June 20, 2023Macon County, Alabama

NWS Birmingham, AL issued this flash flood warning at Jun 20, 2023, 9:06 PM CDT for Macon County, Alabama. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 20, 2023, 9:06 PM CDT (02:06 UTC)
Expired
Jun 21, 2023, 12:57 AM CDT
In force
4 hr
Issued by
NWS Birmingham, AL
Area
Storm-based polygon
Flood severity
None

County Macon County, AL

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 2.1 hours before the alert went out and 129 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 2023-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1286 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 00:00Z on 2023-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 50 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
1286 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
1202 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
50 m²/s²
0-3 km storm-relative helicity
66 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

048 
WGUS54 KBMX 210206
FFWBMX
ALC087-210800-
/O.NEW.KBMX.FF.W.0013.230621T0206Z-230621T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Birmingham AL
906 PM CDT Tue Jun 20 2023

The National Weather Service in Birmingham has issued a

* Flash Flood Warning for...
  Northeastern Macon County in southeastern Alabama...

* Until 300 AM CDT.

* At 906 PM CDT, local law enforcement reported thunderstorms 
  producing heavy rain across the warned area. Between 2 and 4 
  inches of rain have fallen. Additional rainfall amounts of 1 to 2 
  inches are possible in the warned area. Flash flooding is ongoing 
  or expected to begin shortly. County Road 57 is impassable.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Law enforcement reported.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Tuskegee, Notasulga, Franklin, Tuskegee National Forest, Lake 
  Tuskegee, Society Hill, Liberty City, I 85 Rest Area, Moton Field 
  Municipal Airport and Uphapee Creek.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 3228 8543 3245 8581 3249 8582 3249 8580
      3258 8580 3258 8571 3260 8571 3260 8570
      3258 8569 3258 8566 3257 8566 3257 8565
      3250 8549 3250 8544

FLASH FLOOD...OBSERVED

$$

32/Davis
2 follow-up statements
357 
WGUS74 KBMX 210337
FFSBMX

Flash Flood Statement
National Weather Service Birmingham AL
1037 PM CDT Tue Jun 20 2023

ALC087-210800-
/O.CON.KBMX.FF.W.0013.000000T0000Z-230621T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Macon AL-
1037 PM CDT Tue Jun 20 2023

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 3 AM CDT WEDNESDAY 
FOR NORTHEASTERN MACON COUNTY...

At 1037 PM CDT, local law enforcement reported thunderstorms 
producing heavy rain across the warned area. Between 2 and 5 inches 
of rain have fallen. Additional rainfall amounts up to 1 inch are 
possible in the warned area. Flash flooding is ongoing or expected 
to begin shortly.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Law enforcement reported.

IMPACT...Flash flooding of small creeks and streams, urban areas,
         highways, streets and underpasses as well as other poor
         drainage and low-lying areas.

Some locations that will experience flash flooding include...
  Tuskegee, Notasulga, Franklin, Tuskegee National Forest, Lake 
  Tuskegee, Society Hill, Liberty City, I 85 Rest Area, Moton Field 
  Municipal Airport and Uphapee Creek.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 3228 8543 3245 8581 3249 8582 3249 8580
      3258 8580 3258 8571 3260 8571 3260 8570
      3258 8569 3258 8566 3257 8566 3257 8565
      3250 8549 3250 8544

FLASH FLOOD...OBSERVED

$$

40/Sizemore
257 
WGUS74 KBMX 210557
FFSBMX

Flash Flood Statement
National Weather Service Birmingham AL
1257 AM CDT Wed Jun 21 2023

ALC087-210607-
/O.CAN.KBMX.FF.W.0013.000000T0000Z-230621T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Macon AL-
1257 AM CDT Wed Jun 21 2023

...FLASH FLOOD WARNING IS CANCELLED FOR NORTHEASTERN MACON COUNTY...

The heavy rain has ended. Flooding is no longer expected to pose an 
immediate threat. Please continue to heed remaining road closures.

LAT...LON 3228 8543 3245 8581 3249 8582 3249 8580
      3258 8580 3258 8571 3260 8571 3260 8570
      3258 8569 3258 8566 3257 8566 3257 8565
      3250 8549 3250 8544

$$

40/Sizemore

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 20, 7:42 PM CDTSpecial Weather StatementBMXMacon33 min
Jun 20, 7:58 PM CDTAreal Flood AdvisoryBMXMacon68 min
Jun 20, 8:04 PM CDTSpecial Weather StatementBMXElmore26 min
Jun 20, 8:22 PM CDTAreal Flood AdvisoryBMXLee3 hr
Jun 20, 8:52 PM CDTSpecial Weather StatementBMXLowndes38 min
Jun 20, 9:55 PM CDTSpecial Weather StatementBMXLowndes35 min
Jun 20, 11:34 PM CDTSpecial Weather StatementBMXPike26 min
Jun 21, 3:11 PM CDTSpecial Weather StatementBMXBarbour34 min
Jun 21, 4:33 PM CDTAreal Flood AdvisoryBMXChambers, Lee3 hr
Jun 21, 4:54 PM CDTAreal Flood AdvisoryBMXBullock3 hr
Jun 21, 5:07 PM CDTAreal Flood AdvisoryBMXMacon3 hr

Nearby

Flash Flood Warnings in Alabama, 2023Every flash flood warning in 2023

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.