Alert archive / Alabama / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 48, NWS Mobile, AL

April 9, 2021Choctaw County, Clarke County, Washington County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Apr 9, 2021, 7:02 AM CDT for Choctaw County, Clarke County, Washington County, Alabama. It was in force for 43 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: Apr 9, 2021, 7:02 AM CDT (12:02 UTC)
Expired: Apr 9, 2021, 7:45 AM CDT
In force: 43 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Choctaw County, AL, Clarke County, AL, Washington County, AL

The radar

The Mobile radar (KMOB), 119 km from the middle of the area, began a volume at 12:05 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
Apr 9, 7:15 AM CDT	HAIL 2.5	4 Sse Coffeeville, AL	HAIL UP TO TENNIS BALL SIZE REPORTED ON HIGHWAY 69 BETWEEN COFFEEVILLE AND SALITPA. THE HAIL RESULTED IN VEHICLE DAMAGE.

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, 0.0 hours before the alert went out and 196 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: 89 J/kg
Mixed-layer CIN: -208 J/kg
Mixed-layer LCL: 1321 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 70 m²/s²
0-3 km storm-relative helicity: 141 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

305 
WUUS54 KMOB 091202
SVRMOB
ALC023-025-129-091245-
/O.NEW.KMOB.SV.W.0048.210409T1202Z-210409T1245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mobile AL
702 AM CDT Fri Apr 9 2021

The National Weather Service in Mobile has issued a

* Severe Thunderstorm Warning for...
  South central Choctaw County in southwestern Alabama...
  North central Washington County in southwestern Alabama...
  Northwestern Clarke County in southwestern Alabama...

* Until 745 AM CDT.

* At 702 AM CDT, a severe thunderstorm was located 5 miles southwest
  of Coffeeville, or 16 miles northeast of Chatom, moving east at 25
  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...
  Grove Hill and Coffeeville. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3177 8773 3168 8772 3159 8775 3161 8824
      3170 8826 3176 8816 3177 8810 3180 8783
TIME...MOT...LOC 1202Z 266DEG 24KT 3168 8813 

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

Black

1 follow-up statement

185 
WWUS54 KMOB 091219
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
719 AM CDT Fri Apr 9 2021

ALC023-129-091228-
/O.CAN.KMOB.SV.W.0048.000000T0000Z-210409T1245Z/
Choctaw AL-Washington AL-
719 AM CDT Fri Apr 9 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL CHOCTAW AND
NORTH CENTRAL WASHINGTON COUNTIES IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 3177 8773 3168 8772 3159 8775 3161 8808
      3162 8807 3163 8808 3166 8809 3166 8808
      3168 8808 3169 8809 3171 8809 3177 8810
      3180 8783
TIME...MOT...LOC 1218Z 266DEG 24KT 3169 8800 

$$

ALC025-091245-
/O.CON.KMOB.SV.W.0048.000000T0000Z-210409T1245Z/
Clarke AL-
719 AM CDT Fri Apr 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 AM CDT
FOR NORTHWESTERN CLARKE COUNTY...

At 718 AM CDT, a severe thunderstorm was located 7 miles southeast of
Coffeeville, or 13 miles west of Grove Hill, moving east at 30 mph.

HAZARD...Ping pong ball size hail and 60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees.

Locations impacted include...
Grove Hill and Coffeeville. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3177 8773 3168 8772 3159 8775 3161 8808
      3162 8807 3163 8808 3166 8809 3166 8808
      3168 8808 3169 8809 3171 8809 3177 8810
      3180 8783
TIME...MOT...LOC 1218Z 266DEG 24KT 3169 8800 

HAIL...1.50IN
WIND...60MPH
 
$$

Black

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 8, 10:33 PM CDT	Small Craft Advisory	MOB		41 hr
Apr 9, 2:57 AM CDT	Severe Thunderstorm Warning	MOB	Mobile	34 min
Apr 9, 3:30 AM CDT	Special Weather Statement	MOB	Mobile	45 min
Apr 9, 3:57 AM CDT	Special Marine Warning	MOB		93 min
Apr 9, 4:17 AM CDT	Special Weather Statement	MOB	Mobile	58 min
Apr 9, 4:25 AM CDT	Special Marine Warning	MOB		2 hr
Apr 9, 6:28 AM CDT	Special Marine Warning	MOB		2 hr
Apr 9, 6:42 AM CDT	Special Marine Warning	MOB		2 hr
Apr 9, 6:47 AM CDT	Special Weather Statement	MOB	Clarke	43 min
Apr 9, 6:54 AM CDT	Severe Thunderstorm Warning	MOB	Choctaw, Clarke	38 min
Apr 9, 7:45 AM CDT	Severe Thunderstorm Warning	MOB	Clarke, Monroe	21 min
Apr 9, 8:06 AM CDT	Special Weather Statement	MOB	Clarke	39 min
Apr 9, 8:09 AM CDT	Special Marine Warning	MOB		96 min
Apr 9, 8:28 AM CDT	Special Marine Warning	MOB		105 min
Apr 9, 9:49 AM CDT	Special Marine Warning	MOB		54 min
Apr 9, 12:18 PM CDT	High Surf Advisory	MOB	Baldwin, Mobile	43 hr
Apr 9, 12:23 PM CDT	Special Weather Statement	MOB	Wilcox	52 min
Apr 9, 2:16 PM CDT	Special Weather Statement	MOB	Wilcox	44 min
Apr 9, 2:18 PM CDT	Special Weather Statement	MOB	Choctaw	42 min
Apr 9, 2:35 PM CDT	Special Weather Statement	MOB	Choctaw	40 min
Apr 9, 2:56 PM CDT	Special Weather Statement	MOB	Crenshaw	49 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.