Alert archive / Alabama / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 67, NWS Mobile, AL

April 15, 2021Baldwin County, Mobile County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Apr 15, 2021, 3:48 AM CDT for Baldwin County, Mobile County, Alabama. It was in force for 42 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 15, 2021, 3:48 AM CDT (08:48 UTC)
Expired: Apr 15, 2021, 4:30 AM CDT
In force: 42 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Baldwin County, AL, Mobile County, AL

The radar

The Mobile radar (KMOB), 50 km from the middle of the area, began a volume at 08:52 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 15, 4:00 AM CDT	HAIL 0.25	Dauphin Island, AL	VARIOUS REPORTS OF BLUEBERRY AND PEA SIZE HAIL REPORTED ON DAUPHIN ISLAND. NUMEROUS PICTURES AND VIDEOS ON SOCIAL MEDIA.

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

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 8.8 hours before the alert went out and 155 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: 5 J/kg
Mixed-layer CIN: -620 J/kg
Mixed-layer LCL: 709 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 311 m²/s²
0-3 km storm-relative helicity: 272 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

671 
WUUS54 KMOB 150848
SVRMOB
ALC003-097-150930-
/O.NEW.KMOB.SV.W.0067.210415T0848Z-210415T0930Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mobile AL
348 AM CDT Thu Apr 15 2021

The National Weather Service in Mobile has issued a

* Severe Thunderstorm Warning for...
  South central Mobile County in southwestern Alabama...
  Southwestern Baldwin County in southwestern Alabama...

* Until 430 AM CDT.

* At 347 AM CDT, a severe thunderstorm was located 6 miles south of
  Coden, or 7 miles south of Bayou La Batre, moving east at 30 mph.

  HAZARD...Quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Damage to vehicles is expected.

* Locations impacted include...
  Dauphin Island and Fort Morgan. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3021 8836 3039 8832 3033 8789 3028 8786
      3017 8789 3016 8796
TIME...MOT...LOC 0847Z 281DEG 24KT 3029 8826 

HAIL...1.00IN
WIND...<50MPH
 
$$

Black

2 follow-up statements

702 
WWUS54 KMOB 150902
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
402 AM CDT Thu Apr 15 2021

ALC003-097-150930-
/O.CON.KMOB.SV.W.0067.000000T0000Z-210415T0930Z/
Mobile AL-Baldwin AL-
402 AM CDT Thu Apr 15 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 AM CDT
FOR SOUTH CENTRAL MOBILE AND SOUTHWESTERN BALDWIN COUNTIES...

At 402 AM CDT, a severe thunderstorm was located over Dauphin Island,
moving east at 30 mph.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

Locations impacted include...
Dauphin Island and Fort Morgan. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3014 8790 3022 8831 3036 8817 3033 8789
      3028 8786
TIME...MOT...LOC 0902Z 281DEG 24KT 3027 8814 

HAIL...1.00IN
WIND...<50MPH
 
$$

Black

198 
WWUS54 KMOB 150925
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
425 AM CDT Thu Apr 15 2021

ALC003-097-150935-
/O.EXP.KMOB.SV.W.0067.000000T0000Z-210415T0930Z/
Mobile AL-Baldwin AL-
425 AM CDT Thu Apr 15 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL MOBILE AND
SOUTHWESTERN BALDWIN COUNTIES WILL EXPIRE AT 430 AM CDT...
                
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 will be allowed to expire.

LAT...LON 3014 8790 3022 8831 3036 8817 3033 8789
      3028 8786
TIME...MOT...LOC 0925Z 281DEG 24KT 3024 8798 

$$

Black

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 14, 7:13 PM CDT	Special Marine Warning	MOB		62 min
Apr 14, 8:24 PM CDT	Special Marine Warning	MOB		96 min
Apr 14, 10:00 PM CDT	Special Marine Warning	MOB		97 min
Apr 15, 2:17 AM CDT	Special Weather Statement	MOB	Washington	43 min
Apr 15, 3:05 AM CDT	Special Marine Warning	MOB		55 min
Apr 15, 3:23 AM CDT	Special Weather Statement	MOB	Mobile	52 min
Apr 15, 3:42 AM CDT	Small Craft Advisory	MOB		11 hr
Apr 15, 4:00 AM CDT	Special Marine Warning	MOB		45 min
Apr 15, 4:52 AM CDT	Areal Flood Advisory	MOB	Mobile	113 min
Apr 15, 5:00 AM CDT	Special Marine Warning	MOB		60 min
Apr 15, 5:13 AM CDT	Special Weather Statement	MOB	Washington	47 min
Apr 15, 5:19 AM CDT	Special Weather Statement	MOB	Mobile	41 min
Apr 15, 5:23 AM CDT	Special Marine Warning	MOB		97 min
Apr 15, 5:55 AM CDT	Special Marine Warning	MOB		95 min
Apr 15, 6:31 AM CDT	Areal Flood Advisory	MOB	Baldwin, Mobile	119 min
Apr 15, 6:36 AM CDT	Areal Flood Advisory	MOB	Baldwin, Mobile	114 min
Apr 15, 7:01 AM CDT	Special Marine Warning	MOB		119 min
Apr 15, 7:04 AM CDT	Special Weather Statement	MOB	Baldwin	41 min
Apr 15, 7:06 AM CDT	Special Marine Warning	MOB		39 min
Apr 15, 7:36 AM CDT	Flash Flood Warning	MOB	Baldwin, Mobile	3 hr
Apr 15, 7:40 AM CDT	Special Marine Warning	MOB		95 min
Apr 15, 7:45 AM CDT	Severe Thunderstorm Warning	MOB	Baldwin	45 min
Apr 15, 7:51 AM CDT	Special Marine Warning	MOB		84 min
Apr 15, 7:52 AM CDT	Special Weather Statement	MOB	Mobile	53 min
Apr 15, 8:05 AM CDT	Special Weather Statement	MOB	Mobile	40 min
Apr 15, 8:11 AM CDT	Special Marine Warning	MOB		2 hr
Apr 15, 8:52 AM CDT	Special Marine Warning	MOB		83 min
Apr 15, 9:45 AM CDT	Areal Flood Warning	MOB	Mobile	12 hr
Apr 15, 10:14 AM CDT	Special Marine Warning	MOB		61 min
Apr 15, 10:48 AM CDT	Flash Flood Watch	MOB	Baldwin, Mobile, Washington	62 hr
Apr 15, 11:50 AM CDT	Areal Flood Warning	MOB	Baldwin	6 hr

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.