Alert archive / Alabama / Special Weather Statements in 2021

Special Weather Statement, NWS Birmingham, AL

August 2, 2021Montgomery County, Alabama

NWS Birmingham, AL issued this special weather statement at Aug 2, 2021, 1:15 AM CDT for Montgomery County, Alabama. It was in force for 30 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 2, 2021, 1:15 AM CDT (06:15 UTC)
Expired
Aug 2, 2021, 1:45 AM CDT
In force
30 min
Issued by
NWS Birmingham, AL

County Montgomery County, AL

The radar

The Maxwell AFB radar (KMXX), 42 km from the middle of the area, began a volume at 06:17 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, 6.3 hours before the alert went out and 127 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 2021-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 941 joules per kilogram.LCLLFCEL10008507005003002001001 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 2021-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 6 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
941 J/kg
Mixed-layer CIN
-57 J/kg
Mixed-layer LCL
1260 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
6 m²/s²
0-3 km storm-relative helicity
15 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

928 
WWUS84 KBMX 020615
SPSBMX

Special Weather Statement
National Weather Service Birmingham AL
115 AM CDT Mon Aug 2 2021
 
ALZ044-020645-
Montgomery AL-
115 AM CDT Mon Aug 2 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN MONTGOMERY COUNTY
UNTIL 145 AM CDT...

At 115 AM CDT, Doppler radar was tracking a strong thunderstorm near
Pike Road, or 8 miles north of Meadville, moving east at 20 mph.

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

Locations impacted include...
Southeastern Montgomery, Pike Road and Carters Hill. 

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 3211 8623 3231 8619 3229 8594 3228 8592
      3227 8592 3227 8598 3225 8599 3225 8600
      3206 8600
TIME...MOT...LOC 0615Z 279DEG 16KT 3219 8613 

$$

32/Davis

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 1, 8:47 PM CDTSpecial Weather StatementBMXMarengo43 min
Aug 1, 9:11 PM CDTSevere Thunderstorm WarningBMXMarengo49 min
Aug 1, 9:25 PM CDTSpecial Weather StatementBMXDallas50 min
Aug 1, 9:31 PM CDTAreal Flood AdvisoryBMXMarengo3 hr
Aug 1, 10:02 PM CDTSpecial Weather StatementBMXMarengo43 min
Aug 1, 11:08 PM CDTSpecial Weather StatementBMXSumter52 min
Aug 2, 12:24 AM CDTSpecial Weather StatementBMXHale51 min
Aug 2, 11:37 AM CDTSpecial Weather StatementBMXMarengo38 min
Aug 2, 1:52 PM CDTSpecial Weather StatementBMXBullock38 min
Aug 2, 2:56 PM CDTSpecial Weather StatementBMXMontgomery34 min
Aug 2, 3:13 PM CDTSpecial Weather StatementBMXMontgomery32 min
Aug 2, 3:29 PM CDTSevere Thunderstorm WarningBMXElmore, Macon, Montgomery25 min
Aug 2, 4:18 PM CDTSpecial Weather StatementBMXRussell27 min

Nearby

Special Weather Statements in Alabama, 2021Every special weather statement 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.