Alert archive / Alabama / Special Weather Statements in 2020

Special Weather Statement, NWS Birmingham, AL

August 6, 2020Russell County, Alabama

NWS Birmingham, AL issued this special weather statement at Aug 6, 2020, 6:20 PM CDT for Russell County, Alabama. It was in force for 25 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 6, 2020, 6:20 PM CDT (23:20 UTC)
Expired: Aug 6, 2020, 6:45 PM CDT
In force: 25 min
Issued by: NWS Birmingham, AL

County Russell County, AL

The radar

The Maxwell AFB radar (KMXX), 52 km from the middle of the area, began a volume at 23:20 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

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 11.3 hours before the alert went out and 158 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: 593 J/kg
Mixed-layer CIN: -80 J/kg
Mixed-layer LCL: 1116 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 42 m²/s²
0-3 km storm-relative helicity: 58 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

867 
WWUS84 KBMX 062320
SPSBMX

Special Weather Statement
National Weather Service Birmingham AL
620 PM CDT Thu Aug 6 2020
 
ALZ046-048-062345-
Bullock AL-Russell AL-
620 PM CDT Thu Aug 6 2020

...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL BULLOCK AND
SOUTHWESTERN RUSSELL COUNTIES UNTIL 645 PM CDT...

At 620 PM CDT, Doppler radar was tracking a strong thunderstorm near
Hurtsboro. This storm was nearly stationary.

Winds in excess of 40 mph will be possible with this storm.

Locations impacted include...
Hurtsboro and Guerryton. 

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 3215 8541 3214 8541 3214 8543 3210 8543
      3210 8549 3222 8552 3224 8549 3223 8544
      3226 8543 3230 8535 3215 8531
TIME...MOT...LOC 2320Z 248DEG 2KT 3219 8543 

$$

32/Davis

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 6, 6:17 PM CDT	Special Weather Statement	BMX	Jefferson	28 min

Nearby

Special Weather Statements in Alabama, 2020 Every special weather statement in 2020

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.