Alert archive / Alabama / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 117, NWS Mobile, AL

May 4, 20214 counties in Alabama; Wayne County, Mississippi

NWS Mobile, AL issued this severe thunderstorm warning at May 4, 2021, 4:59 PM CDT for 4 counties in Alabama; Wayne County, Mississippi. It was in force for 61 min. 10 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, 4:59 PM CDT (21:59 UTC)
Expired: May 4, 2021, 6:00 PM CDT
In force: 61 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Choctaw County, AL, Clarke County, AL, Washington County, AL, Wilcox County, AL, Wayne County, MS

The radar

The Mobile radar (KMOB), 157 km from the middle of the area, began a volume at 21:59 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, 5:10 PM CDT	TSTM WND DMG	Morvin, AL	TREES DOWN ALONG HIGHWAY 69 NEAR CAMPBELLS LANDING RD (BLOCKING THE ROAD).
May 4, 5:18 PM CDT	TSTM WND DMG	7 E Coffeeville, AL	TREES DOWN BLOCKING THE ROAD NEAR COFFEEVILLE.
May 4, 5:20 PM CDT	TSTM WND DMG	Bashi, AL	TREES AND POWER LINES DOWN ALONG BASHI RD.
May 4, 5:25 PM CDT	TSTM WND DMG	Thomasville, AL	TREES DOWN IN THE THOMASVILLE AREA.
May 4, 5:32 PM CDT	TSTM WND DMG	1 Ssw Loper, AL	CHATOM POLICE REPORTED LARGE TREE DOWN IN YARBO COMMUNITY ON FRANCE CITY RD.
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 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, 5:58 PM CDT	TSTM WND DMG	Leroy, AL	LAW ENFORCEMENT REPORTS TREE DOWN IN LEROY ON CR 34.

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, 10.0 hours before the alert went out and 165 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.

663 
WUUS54 KMOB 042159
SVRMOB
ALC023-025-129-131-MSC153-042300-
/O.NEW.KMOB.SV.W.0117.210504T2159Z-210504T2300Z/

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

The National Weather Service in Mobile has issued a

* Severe Thunderstorm Warning for...
  Choctaw County in southwestern Alabama...
  Northern Washington County in southwestern Alabama...
  Clarke County in southwestern Alabama...
  Western Wilcox County in south central Alabama...
  Central Wayne County in southeastern Mississippi...

* Until 600 PM CDT.

* At 458 PM CDT, severe thunderstorms were located along a line
  extending from 4 miles south of Pennington to near Toxey to 5 miles
  northeast of Waynesboro to 8 miles southeast of Mill Creek, moving
  east at 40 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Jackson, Waynesboro, Thomasville, Butler, Grove Hill, Saint
  Stephens, Leroy, Clara, Pine Hill, Millry, Buckatunna, Silas,
  Coffeeville, Pennington, Fulton, Gilbertown, Yellow Bluff and
  Toxey.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 3231 8793 3228 8793 3230 8794 3228 8802
      3218 8801 3209 8804 3205 8812 3199 8810
      3200 8763 3213 8762 3213 8752 3227 8751
      3227 8744 3220 8732 3195 8743 3146 8791
      3154 8894 3158 8894 3190 8847 3231 8814
TIME...MOT...LOC 2158Z 281DEG 35KT 3214 8808 3191 8835 3174 8858 3160
8886

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

Black

2 follow-up statements

672 
WWUS54 KMOB 042223
SVSMOB

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

ALC023-025-129-131-MSC153-042300-
/O.CON.KMOB.SV.W.0117.000000T0000Z-210504T2300Z/
Choctaw AL-Washington AL-Clarke AL-Wilcox AL-Wayne MS-
523 PM CDT Tue May 4 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM CDT
FOR SOUTHWESTERN CHOCTAW...NORTHERN WASHINGTON...CLARKE...WESTERN
WILCOX AND CENTRAL WAYNE COUNTIES...

At 523 PM CDT, severe thunderstorms were located along a line
extending from Surginer to 7 miles northeast of Coffeeville to 4
miles north of Millry to 3 miles west of Buckatunna, moving east at
45 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Jackson, Waynesboro, Thomasville, Grove Hill, Saint Stephens, Leroy,
Clara, Pine Hill, Millry, Buckatunna, Silas, Coffeeville, Fulton and
Yellow Bluff.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 3199 8809 3200 8763 3213 8762 3213 8752
      3227 8751 3227 8744 3220 8732 3195 8743
      3146 8791 3154 8894 3156 8894 3160 8891
      3186 8833
TIME...MOT...LOC 2223Z 280DEG 39KT 3208 8772 3185 8801 3169 8831 3156
8859

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

882 
WWUS54 KMOB 042235
SVSMOB

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

ALC023-025-129-131-MSC153-042300-
/O.CON.KMOB.SV.W.0117.000000T0000Z-210504T2300Z/
Choctaw AL-Washington AL-Clarke AL-Wilcox AL-Wayne MS-
535 PM CDT Tue May 4 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM CDT
FOR SOUTH CENTRAL CHOCTAW...NORTHERN WASHINGTON...NORTHERN CLARKE...
WESTERN WILCOX AND SOUTHEASTERN WAYNE COUNTIES...

At 534 PM CDT, severe thunderstorms were located along a line
extending from 3 miles northeast of Vineland to 10 miles west of
Fulton to 7 miles east of Millry to near Buckatunna, moving east at
40 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Jackson, Thomasville, Grove Hill, Saint Stephens, Leroy, Pine Hill,
Millry, Buckatunna, Coffeeville, Fulton and Yellow Bluff.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 3200 8763 3213 8762 3213 8752 3227 8751
      3227 8744 3220 8732 3195 8743 3146 8791
      3152 8874 3176 8820 3200 8780
TIME...MOT...LOC 2234Z 281DEG 35KT 3206 8761 3183 8790 3167 8820 3154
8848

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, 5:33 PM CDT	Severe Thunderstorm Warning	MOB	Butler, Clarke, Conecuh, Monroe, Wilcox	57 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
May 4, 10:17 AM CDT	River Flood Warning	MOB	George, Greene, Wayne	3 days

Nearby

Severe Thunderstorm Warnings in Alabama, 2021 Severe Thunderstorm Warnings in Mississippi, 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.