Alert archive / Alabama / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 159, NWS Mobile, AL

July 5, 2021Mobile County, Washington County, Alabama; Greene County, Mississippi

NWS Mobile, AL issued this severe thunderstorm warning at Jul 5, 2021, 3:11 PM CDT for Mobile County, Washington County, Alabama; Greene County, Mississippi. It was in force for 20 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 5, 2021, 3:11 PM CDT (20:11 UTC)
Expired: Jul 5, 2021, 3:31 PM CDT
In force: 20 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Mobile County, AL, Washington County, AL, Greene County, MS

The radar

The Mobile radar (KMOB), 53 km from the middle of the area, began a volume at 20:12 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.

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 8.2 hours before the alert went out and 161 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: 1061 J/kg
Mixed-layer CIN: -29 J/kg
Mixed-layer LCL: 611 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: -19 m²/s²
0-3 km storm-relative helicity: -9 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

173 
WUUS54 KMOB 052011
SVRMOB
ALC097-129-MSC041-052100-
/O.NEW.KMOB.SV.W.0159.210705T2011Z-210705T2100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mobile AL
311 PM CDT Mon Jul 5 2021

The National Weather Service in Mobile has issued a

* Severe Thunderstorm Warning for...
  Northwestern Mobile County in southwestern Alabama...
  Southwestern Washington County in southwestern Alabama...
  Southeastern Greene County in southeastern Mississippi...

* Until 400 PM CDT.

* At 311 PM CDT, a severe thunderstorm was located 5 miles west of
  Citronelle, 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...
  Citronelle, Leakesville and Deer Park. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Large hail and damaging winds and continuous cloud to ground
lightning is occurring with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3116 8819 3099 8827 3107 8865 3132 8854
TIME...MOT...LOC 2011Z 110DEG 13KT 3111 8832 

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

1 follow-up statement

942 
WWUS54 KMOB 052031
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
331 PM CDT Mon Jul 5 2021

ALC097-129-MSC041-052041-
/O.CAN.KMOB.SV.W.0159.000000T0000Z-210705T2100Z/
Mobile AL-Washington AL-Greene MS-
331 PM CDT Mon Jul 5 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN MOBILE...
SOUTHWESTERN WASHINGTON AND SOUTHEASTERN GREENE COUNTIES 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.  However gusty winds and
heavy rain are still possible with this thunderstorm.

LAT...LON 3116 8819 3099 8827 3107 8865 3132 8854
TIME...MOT...LOC 2026Z 110DEG 13KT 3113 8840 

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 4, 7:02 PM CDT	Areal Flood Advisory	MOB	Baldwin	3 hr
Jul 4, 7:27 PM CDT	Areal Flood Advisory	MOB	Mobile	3 hr
Jul 4, 8:16 PM CDT	Areal Flood Advisory	MOB	Monroe	3 hr
Jul 4, 8:43 PM CDT	Areal Flood Advisory	MOB	Conecuh	3 hr
Jul 4, 8:44 PM CDT	Areal Flood Advisory	MOB	Mobile	3 hr
Jul 5, 1:52 PM CDT	Special Weather Statement	MOB	Washington	53 min
Jul 5, 2:46 PM CDT	Special Weather Statement	MOB	Washington	44 min
Jul 5, 6:10 PM CDT	Areal Flood Advisory	MOB	Baldwin	3 hr
Jul 5, 2:07 PM CDT	Special Weather Statement	MOB	Greene	38 min
Jul 5, 4:25 PM CDT	Severe Thunderstorm Warning	MOB	Wayne	37 min

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.