Alert archive / Alabama / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 118, NWS Mobile, AL

May 4, 20215 counties in Alabama

NWS Mobile, AL issued this severe thunderstorm warning at May 4, 2021, 5:33 PM CDT for 5 counties in Alabama. It was in force for 57 min. 9 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: May 4, 2021, 5:33 PM CDT (22:33 UTC)
Expired: May 4, 2021, 6:30 PM CDT
In force: 57 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Butler County, AL, Clarke County, AL, Conecuh County, AL, Monroe County, AL, Wilcox County, AL

The radar

The Birmingham radar (KBMX), 141 km from the middle of the area, began a volume at 22:36 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
May 4, 5:38 PM CDT	TSTM WND DMG	1 W Grove Hill, AL	TREE DOWN ALONG WEST COBB RD BLOCKING ROADWAY.
May 4, 5:40 PM CDT	TSTM WND DMG	Grove Hill, AL	TREES AND POWER LINES DOWN NEAR WILSON HALL MIDDLE SCHOOL.
May 4, 5:50 PM CDT	TSTM WND DMG	2 Ese Canton Bend, AL	MULTIPLE TREES DOWN ALONG ELLIS ISLAND RD. REPORTS AND PICTURES VIA SOCIAL MEDIA.
May 4, 5:50 PM CDT	TSTM WND DMG	Camden, AL	LARGE TREE DOWN. PART OF A ROOF BLOWN OFF A SHED. REPORT VIA SOCIAL MEDIA.
May 4, 5:50 PM CDT	TSTM WND GST 67	2 Se Grove Hill, AL	CORRECTED TIME. MESONET STATION IN GROVE HILL GUSTED TO 67 MPH.
May 4, 5:55 PM CDT	TSTM WND DMG	4 Se Winn, AL	LARGE TREE FELL ON THE UNION UNITED METHODIST CHURCH AND DAMAGING THE BUILDING, AND LIFTED IT OFF OF ITS FOUNDATION.
May 4, 6:00 PM CDT	TSTM WND DMG	Vredenburgh, AL	APPROXIMATELY 20 TREES SNAPPED IN TOWN. MINOR DAMAGE TO A MOBILE HOME. TIME ESTIMATED FROM RADAR.
May 4, 6:10 PM CDT	TSTM WND DMG	Beatrice, AL	TREES DOWN IN BEATRICE.
May 4, 6:26 PM CDT	TSTM WND GST 67	2 Se Grove Hill, AL	MESONET STATION IN GROVE HILL GUSTED TO 67 MPH.

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 4, 3:31 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 10.6 hours before the alert went out and 141 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: 2158 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 569 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 145 m²/s²
0-3 km storm-relative helicity: 195 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 7.3

Open this sounding in Storm Lab

The text

As transmitted.

015 
WUUS54 KMOB 042233
SVRMOB
ALC013-025-035-099-131-042330-
/O.NEW.KMOB.SV.W.0118.210504T2233Z-210504T2330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mobile AL
533 PM CDT Tue May 4 2021

The National Weather Service in Mobile has issued a

* Severe Thunderstorm Warning for...
  Butler County in south central Alabama...
  Northeastern Monroe County in south central Alabama...
  Northern Clarke County in southwestern Alabama...
  Wilcox County in south central Alabama...
  North central Conecuh County in south central Alabama...

* Until 630 PM CDT.

* At 532 PM CDT, severe thunderstorms were located along a line
  extending from 3 miles southeast of Consul to 3 miles southeast of
  Thomasville to 8 miles northwest of Grove Hill to 4 miles southwest
  of Coffeeville, moving east at 55 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Greenville, Thomasville, Camden, Grove Hill, Peterman, Georgiana,
  Whatley, Pine Hill, Beatrice, Vredenburgh, Fulton, Yellow Bluff and
  Pine Apple.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 1000 PM CDT for south central
and southwestern Alabama.

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

&&

LAT...LON 3220 8736 3220 8733 3205 8718 3205 8686
      3196 8686 3196 8645 3184 8644 3169 8648
      3155 8690 3153 8725 3161 8803 3185 8777
      3199 8773 3201 8762 3213 8762 3213 8752
      3227 8751 3227 8744
TIME...MOT...LOC 2232Z 270DEG 50KT 3223 8750 3188 8768 3176 8791 3171
8815

HAIL...<.75IN
WIND...60MPH
 
$$

Black

1 follow-up statement

434 
WWUS54 KMOB 042304
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
604 PM CDT Tue May 4 2021

ALC013-025-035-099-131-042330-
/O.CON.KMOB.SV.W.0118.000000T0000Z-210504T2330Z/
Butler AL-Monroe AL-Clarke AL-Wilcox AL-Conecuh AL-
604 PM CDT Tue May 4 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM CDT
FOR BUTLER...NORTHEASTERN MONROE...EAST CENTRAL CLARKE...WILCOX AND
NORTH CENTRAL CONECUH COUNTIES...

At 603 PM CDT, severe thunderstorms were located along a line
extending from Dallas Lake to 9 miles southeast of Camden to 7 miles
southwest of Vredenburgh to 4 miles northeast of Whatley, moving east
at 60 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Greenville, Camden, Peterman, Georgiana, Whatley, Beatrice,
Vredenburgh and Pine Apple.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 1000 PM CDT for south central
and southwestern Alabama.

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

&&

LAT...LON 3215 8728 3205 8718 3205 8686 3196 8686
      3196 8645 3184 8644 3169 8648 3155 8690
      3153 8725 3160 8794 3181 8762
TIME...MOT...LOC 2303Z 270DEG 50KT 3223 8701 3188 8720 3176 8743 3171
8767

HAIL...<.75IN
WIND...60MPH
 
$$

Black

The office that day

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

Issued	Product	Office	Counties	Lasted
May 4, 4:23 AM CDT	Flash Flood Watch	MOB	Baldwin, Butler, Choctaw, Clarke, Conecuh, Covington and 6 more	33 hr
May 4, 10:18 AM CDT	River Flood Warning	MOB	Choctaw, Clarke, Washington	21 days
May 4, 10:19 AM CDT	River Flood Warning	MOB	Clarke, Washington	5 days
May 4, 3:55 PM CDT	Severe Thunderstorm Warning	MOB	Choctaw, Clarke, Washington	65 min
May 4, 4:44 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Clarke, Mobile, Monroe, Washington	61 min
May 4, 4:59 PM CDT	Severe Thunderstorm Warning	MOB	Choctaw, Clarke, Washington, Wilcox	61 min
May 4, 5:44 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Clarke, Mobile, Monroe, Washington	61 min
May 4, 6:28 PM CDT	Severe Thunderstorm Warning	MOB	Butler, Conecuh, Covington, Crenshaw, Monroe, Wilcox	77 min
May 4, 6:45 PM CDT	Special Weather Statement	MOB	Conecuh, Mobile	45 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.