Alert archive / Alabama / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 147, NWS Birmingham, AL

August 25, 2021Lee County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Aug 25, 2021, 5:40 PM CDT for Lee County, Alabama. It was in force for 24 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Aug 25, 2021, 5:40 PM CDT (22:40 UTC)
Expired: Aug 25, 2021, 6:04 PM CDT
In force: 24 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Lee County, AL

The radar

The Maxwell AFB radar (KMXX), 22 km from the middle of the area, began a volume at 22:41 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.

What was reported inside it

Time	Report	Where	Remark
Aug 25, 5:42 PM CDT	TSTM WND DMG	1 Wsw Auburn University, AL	TREE FELL ON POWER LINES AND TRAFFIC LIGHTS ARE OUT AT THE INTERSECTION OF SHUG JORDAN PKWY AND WIRE RD. TIME ESTIMATED.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 10.7 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-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: 1212 J/kg
Mixed-layer CIN: -48 J/kg
Mixed-layer LCL: 1048 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: 0 m²/s²
0-3 km storm-relative helicity: 12 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

792 
WUUS54 KBMX 252240
SVRBMX
ALC081-252330-
/O.NEW.KBMX.SV.W.0147.210825T2240Z-210825T2330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Birmingham AL
540 PM CDT Wed Aug 25 2021

The National Weather Service in Birmingham has issued a

* Severe Thunderstorm Warning for...
  Northwestern Lee County in east central Alabama...

* Until 630 PM CDT.

* At 539 PM CDT, a severe thunderstorm was located over Auburn,
  moving west at 25 mph.

  HAZARD...60 mph wind gusts and penny size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Auburn, Opelika, Notasulga, Waverly, Beauregard, Auburn University,
  Loachapoka, Robert G. Pitts Airport, Chewacla State Park and
  Roxana.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3252 8555 3257 8566 3258 8566 3258 8570
      3270 8570 3270 8568 3271 8568 3271 8561
      3273 8561 3273 8557 3266 8530 3254 8530
TIME...MOT...LOC 2239Z 087DEG 23KT 3261 8545 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

40/Sizemore

1 follow-up statement

881 
WWUS54 KBMX 252304
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
604 PM CDT Wed Aug 25 2021

ALC081-252313-
/O.CAN.KBMX.SV.W.0147.000000T0000Z-210825T2330Z/
Lee AL-
604 PM CDT Wed Aug 25 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN LEE COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has weakened. 
Therefore, the warning has been cancelled. However gusty winds are 
still possible with this thunderstorm.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Birmingham.

LAT...LON 3252 8555 3257 8566 3258 8566 3258 8570
      3270 8570 3270 8568 3271 8568 3271 8561
      3273 8561 3273 8557 3266 8530 3254 8530
TIME...MOT...LOC 2259Z 087DEG 23KT 3260 8563 

$$

40/Sizemore

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 25, 3:01 PM CDT	Special Weather Statement	BMX	Lee	29 min
Aug 25, 3:37 PM CDT	Special Weather Statement	BMX	Macon	23 min
Aug 25, 4:00 PM CDT	Special Weather Statement	BMX	Elmore	30 min
Aug 25, 4:08 PM CDT	Special Weather Statement	BMX	Marion	37 min
Aug 25, 4:39 PM CDT	Special Weather Statement	BMX	Chambers	51 min
Aug 25, 4:45 PM CDT	Special Weather Statement	BMX	Russell	45 min
Aug 25, 4:53 PM CDT	Severe Thunderstorm Warning	BMX	Russell	37 min
Aug 25, 4:56 PM CDT	Special Weather Statement	BMX	Talladega	34 min
Aug 25, 5:05 PM CDT	Special Weather Statement	BMX	Lee	25 min
Aug 25, 5:23 PM CDT	Severe Thunderstorm Warning	BMX	Bullock, Macon, Russell	29 min
Aug 25, 5:33 PM CDT	Special Weather Statement	BMX	Lee	42 min
Aug 25, 5:33 PM CDT	Special Weather Statement	BMX	Shelby	27 min
Aug 25, 5:53 PM CDT	Special Weather Statement	BMX	Shelby	52 min
Aug 25, 5:59 PM CDT	Severe Thunderstorm Warning	BMX	Shelby	31 min
Aug 25, 6:05 PM CDT	Special Weather Statement	BMX	Macon, Montgomery	25 min
Aug 25, 6:14 PM CDT	Special Weather Statement	BMX	Shelby	31 min
Aug 25, 6:31 PM CDT	Special Weather Statement	BMX	Lowndes	44 min
Aug 25, 6:36 PM CDT	Special Weather Statement	BMX	Randolph	39 min
Aug 25, 6:42 PM CDT	Special Weather Statement	BMX	Jefferson	33 min
Aug 25, 6:54 PM CDT	Special Weather Statement	BMX	Bibb	36 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2021 Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.