Alert archive / Alabama / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 121, NWS Mobile, AL

April 28, 2016Clarke County, Washington County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Apr 28, 2016, 6:33 AM CDT for Clarke County, Washington County, Alabama. It was in force for 42 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: Apr 28, 2016, 6:33 AM CDT (11:33 UTC)
Expired: Apr 28, 2016, 7:15 AM CDT
In force: 42 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Clarke County, AL, Washington County, AL

The radar

The Mobile radar (KMOB), 96 km from the middle of the area, began a volume at 11:36 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

Birmingham, AL (KBMX), launched 00:00Z, 11.6 hours before the alert went out and 214 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: 2 J/kg
Mixed-layer CIN: -230 J/kg
Mixed-layer LCL: 1387 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 82 m²/s²
0-3 km storm-relative helicity: 149 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

640 
WUUS54 KMOB 281133
SVRMOB
ALC025-129-281215-
/O.NEW.KMOB.SV.W.0121.160428T1133Z-160428T1215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
633 AM CDT THU APR 28 2016

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL WASHINGTON COUNTY IN SOUTHWESTERN ALABAMA...
  CENTRAL CLARKE COUNTY IN SOUTHWESTERN ALABAMA...

* UNTIL 715 AM CDT

* AT 633 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR TIBBIE...OR 10
  MILES SOUTH OF CHATOM...MOVING NORTHEAST AT 45 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...
  JACKSON...MCINTOSH...SAINT STEPHENS...WHATLEY...WAGARVILLE...TIBBIE AND
  LEROY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3167 8757 3155 8757 3152 8762 3148 8756
      3144 8757 3141 8761 3143 8764 3142 8767
      3138 8772 3134 8773 3133 8775 3136 8775
      3136 8777 3131 8778 3119 8805 3119 8826
      3135 8836 3152 8811 3168 8782 3172 8771
TIME...MOT...LOC 1133Z 240DEG 40KT 3132 8823 

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

BUTTS

2 follow-up statements

588 
WWUS54 KMOB 281157
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
657 AM CDT THU APR 28 2016

ALC025-129-281215-
/O.CON.KMOB.SV.W.0121.000000T0000Z-160428T1215Z/
WASHINGTON AL-CLARKE AL-
657 AM CDT THU APR 28 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 AM CDT
FOR SOUTHEASTERN WASHINGTON AND CENTRAL CLARKE COUNTIES...

AT 656 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER WAGARVILLE...OR
10 MILES SOUTHWEST OF JACKSON...MOVING NORTHEAST AT 40 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...
JACKSON...MCINTOSH...WHATLEY...WAGARVILLE...SAINT STEPHENS AND LEROY. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

ADDITIONAL STATEMENTS WILL BE ISSUED BY THE NATIONAL WEATHER SERVICE
IN MOBILE AS CONDITIONS WARRANT.

&&

LAT...LON 3167 8757 3155 8757 3152 8762 3148 8756
      3144 8757 3141 8761 3143 8764 3142 8767
      3138 8772 3134 8773 3133 8775 3136 8775
      3136 8777 3131 8778 3122 8799 3132 8813
      3145 8821 3152 8811 3168 8782 3172 8771
TIME...MOT...LOC 1156Z 239DEG 33KT 3141 8804 

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

BUTTS

193 
WWUS54 KMOB 281217
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
717 AM CDT THU APR 28 2016

ALC025-129-281226-
/O.EXP.KMOB.SV.W.0121.000000T0000Z-160428T1215Z/
WASHINGTON AL-CLARKE AL-
717 AM CDT THU APR 28 2016

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WASHINGTON AND
CENTRAL CLARKE COUNTIES HAS EXPIRED...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING HAS BEEN ALLOWED TO EXPIRE.  HOWEVER SMALL
HAIL...GUSTY WINDS...AND HEAVY RAIN ARE STILL POSSIBLE WITH THIS
THUNDERSTORM.

ADDITIONAL STATEMENTS WILL BE ISSUED BY THE NATIONAL WEATHER SERVICE
IN MOBILE AS CONDITIONS WARRANT.

LAT...LON 3167 8757 3155 8757 3152 8762 3148 8756
      3144 8757 3141 8761 3143 8764 3142 8767
      3138 8772 3134 8773 3133 8775 3136 8775
      3136 8777 3131 8778 3122 8799 3132 8813
      3145 8821 3152 8811 3168 8782 3172 8771
TIME...MOT...LOC 1212Z 240DEG 40KT 3141 8804 

$$

BUTTS

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 27, 7:00 PM CDT	Special Marine Warning	MOB		90 min
Apr 27, 7:47 PM CDT	Special Weather Statement	MOB	Covington	58 min
Apr 28, 6:38 AM CDT	Special Weather Statement	MOB	Butler	67 min
Apr 28, 6:53 AM CDT	Special Weather Statement	MOB	Washington	67 min
Apr 28, 7:14 AM CDT	Special Weather Statement	MOB	Washington	46 min
Apr 28, 7:22 AM CDT	Special Weather Statement	MOB	Monroe	38 min
Apr 28, 7:27 AM CDT	Special Weather Statement	MOB	Crenshaw	33 min
Apr 28, 7:34 AM CDT	Areal Flood Advisory	MOB	Conecuh, Monroe	116 min
Apr 28, 7:54 AM CDT	Special Marine Warning	MOB		66 min
Apr 28, 8:01 AM CDT	Special Weather Statement	MOB	Butler, Monroe	59 min
Apr 28, 8:59 AM CDT	Special Marine Warning	MOB		61 min
Apr 28, 9:59 AM CDT	Special Marine Warning	MOB		91 min
Apr 28, 10:02 AM CDT	Special Weather Statement	MOB	Mobile	58 min
Apr 28, 10:48 AM CDT	Special Marine Warning	MOB		87 min
Apr 28, 12:14 PM CDT	Special Marine Warning	MOB		91 min
Apr 28, 1:34 PM CDT	Special Marine Warning	MOB		86 min
Apr 28, 2:07 PM CDT	Special Marine Warning	MOB		83 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2016 Every severe thunderstorm warning in 2016

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.