Alert archive / Alabama / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 129, NWS Birmingham, AL

June 30, 2021Elmore County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jun 30, 2021, 6:38 PM CDT for Elmore County, Alabama. It was in force for 24 min. 2 reports 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: Jun 30, 2021, 6:38 PM CDT (23:38 UTC)
Expired: Jun 30, 2021, 7:02 PM CDT
In force: 24 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Elmore County, AL

The radar

The Maxwell AFB radar (KMXX), 31 km from the middle of the area, began a volume at 23:36 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
Jun 30, 6:38 PM CDT	TSTM WND DMG	Eclectic, AL	TREES AND POWER LINES DOWN IN AND AROUND ECLECTIC.
Jun 30, 6:42 PM CDT	TSTM WND DMG	Central, AL	TREES AND POWER LINES DOWN IN AND AROUND CENTRAL.

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, 11.6 hours before the alert went out and 86 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: 12 J/kg
Mixed-layer CIN: -155 J/kg
Mixed-layer LCL: 1210 m above ground
0-6 km bulk shear: 4 kt
0-1 km storm-relative helicity: -22 m²/s²
0-3 km storm-relative helicity: -21 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

661 
WUUS54 KBMX 302338
SVRBMX
ALC051-010030-
/O.NEW.KBMX.SV.W.0129.210630T2338Z-210701T0030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Birmingham AL
638 PM CDT Wed Jun 30 2021

The National Weather Service in Birmingham has issued a

* Severe Thunderstorm Warning for...
  Northeastern Elmore County in east central Alabama...

* Until 730 PM CDT.

* At 638 PM CDT, a severe thunderstorm was located over Eclectic, or
  near Equality, moving west at 15 mph.

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

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Eclectic, Dexter, Santuck, Western Lake Martin, Southern Lake
  Martin and Central.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3261 8595 3259 8620 3268 8622 3276 8618
      3276 8611 3271 8594
TIME...MOT...LOC 2338Z 093DEG 12KT 3267 8605 

HAIL...1.00IN
WIND...60MPH
 
$$

40/Sizemore

2 follow-up statements

953 
WWUS54 KBMX 302353
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
653 PM CDT Wed Jun 30 2021

ALC051-010030-
/O.CON.KBMX.SV.W.0129.000000T0000Z-210701T0030Z/
Elmore AL-
653 PM CDT Wed Jun 30 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CDT
FOR NORTH CENTRAL ELMORE COUNTY...

At 652 PM CDT, a severe thunderstorm was located near Santuck, or
near Equality, moving west at 15 mph.

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

SOURCE...Radar indicated.

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

Locations impacted include...
Eclectic, Dexter, Santuck, Western Lake Martin and Central. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3272 8601 3262 8602 3259 8620 3268 8622
      3276 8618
TIME...MOT...LOC 2352Z 093DEG 12KT 3267 8611 

HAIL...0.75IN
WIND...60MPH
 
$$

40/Sizemore

963 
WWUS54 KBMX 010002
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
702 PM CDT Wed Jun 30 2021

ALC051-010011-
/O.CAN.KBMX.SV.W.0129.000000T0000Z-210701T0030Z/
Elmore AL-
702 PM CDT Wed Jun 30 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL ELMORE COUNTY IS
CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.

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

LAT...LON 3272 8601 3262 8602 3259 8620 3268 8622
      3276 8618
TIME...MOT...LOC 0000Z 093DEG 12KT 3267 8615 

$$

40/Sizemore

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 30, 6:18 PM CDT	Special Weather Statement	BMX	Clay	27 min
Jun 30, 6:23 PM CDT	Special Weather Statement	BMX	Elmore	37 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.