Alert archive / Alabama / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 150, NWS Mobile, AL

June 23, 2021Mobile County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Jun 23, 2021, 5:29 PM CDT for Mobile County, Alabama. It was in force for 46 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
Jun 23, 2021, 5:29 PM CDT (22:29 UTC)
Expired
Jun 23, 2021, 6:15 PM CDT
In force
46 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

County Mobile County, AL

The radar

The Mobile radar (KMOB), 46 km from the middle of the area, began a volume at 22:30 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, 10.5 hours before the alert went out and 187 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-pSkew-T log-p diagram, Slidell Radar S, LA at 12:00Z on 2021-06-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1906 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 12:00Z on 2021-06-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -20 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
1906 J/kg
Mixed-layer CIN
-13 J/kg
Mixed-layer LCL
537 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
-20 m²/s²
0-3 km storm-relative helicity
7 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

247 
WUUS54 KMOB 232229
SVRMOB
ALC097-232315-
/O.NEW.KMOB.SV.W.0150.210623T2229Z-210623T2315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mobile AL
529 PM CDT Wed Jun 23 2021

The National Weather Service in Mobile has issued a

* Severe Thunderstorm Warning for...
  Northeastern Mobile County in southwestern Alabama...

* Until 615 PM CDT.

* At 529 PM CDT, a severe thunderstorm was located 4 miles west of
  Movico, or 8 miles east of Citronelle, moving southeast at 10 mph.

  HAZARD...60 mph wind gusts and penny size hail.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Axis, Mount Vernon and Movico. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3112 8821 3114 8807 3105 8794 3103 8796
      3102 8795 3102 8792 3104 8793 3103 8792
      3103 8791 3101 8789 3101 8790 3099 8789
      3100 8789 3099 8787 3097 8789 3095 8787
      3086 8814
TIME...MOT...LOC 2229Z 321DEG 10KT 3105 8809 

HAIL...0.75IN
WIND...60MPH
 
$$
1 follow-up statement
467 
WWUS54 KMOB 232258
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
558 PM CDT Wed Jun 23 2021

ALC097-232315-
/O.CON.KMOB.SV.W.0150.000000T0000Z-210623T2315Z/
Mobile AL-
558 PM CDT Wed Jun 23 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM CDT
FOR NORTHEASTERN MOBILE COUNTY...

At 557 PM CDT, a severe thunderstorm was located 5 miles east of
Gulfcrest, or 7 miles southeast of Citronelle, moving southwest at 10
mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

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

Locations impacted include...
Axis, Mount Vernon and Movico. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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 3112 8821 3114 8807 3105 8794 3103 8796
      3102 8795 3102 8792 3104 8793 3103 8792
      3103 8791 3101 8789 3101 8790 3099 8789
      3100 8789 3099 8787 3097 8789 3095 8787
      3086 8814
TIME...MOT...LOC 2257Z 025DEG 7KT 3102 8814 

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

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 22, 7:24 PM CDTAreal Flood AdvisoryMOBMobile3 hr
Jun 23, 3:29 PM CDTSpecial Weather StatementMOBMobile31 min
Jun 23, 3:45 PM CDTSpecial Weather StatementMOBCovington30 min
Jun 23, 3:51 PM CDTSpecial Weather StatementMOBEscambia39 min
Jun 23, 4:41 PM CDTSpecial Weather StatementMOBMobile49 min
Jun 23, 4:55 PM CDTSpecial Weather StatementMOBWashington50 min
Jun 23, 5:22 PM CDTSpecial Weather StatementMOBMobile53 min
Jun 23, 6:06 PM CDTAreal Flood AdvisoryMOBMobile3 hr
Jun 23, 6:14 PM CDTSpecial Weather StatementMOBMobile46 min
Jun 23, 6:38 PM CDTSpecial Weather StatementMOBEscambia37 min
Jun 23, 6:48 PM CDTSpecial Weather StatementMOBMobile42 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2021Every 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.