Alert archive / Alabama / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 174, NWS Mobile, AL

July 31, 2016Butler County, Crenshaw County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Jul 31, 2016, 2:37 PM CDT for Butler County, Crenshaw County, Alabama. It was in force for 15 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 31, 2016, 2:37 PM CDT (19:37 UTC)
Expired: Jul 31, 2016, 2:52 PM CDT
In force: 15 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Butler County, AL, Crenshaw County, AL

The radar

The Maxwell AFB radar (KMXX), 81 km from the middle of the area, began a volume at 19:40 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 12:00Z, 7.6 hours before the alert went out and 142 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: 573 J/kg
Mixed-layer CIN: -109 J/kg
Mixed-layer LCL: 1000 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 2 m²/s²
0-3 km storm-relative helicity: 33 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

140 
WUUS54 KMOB 311937
SVRMOB
ALC013-041-312030-
/O.NEW.KMOB.SV.W.0174.160731T1937Z-160731T2030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
237 PM CDT SUN JUL 31 2016

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN CRENSHAW COUNTY IN SOUTH CENTRAL ALABAMA...
  NORTHEASTERN BUTLER COUNTY IN SOUTH CENTRAL ALABAMA...

* UNTIL 330 PM CDT

* AT 236 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR LOGAN...OR 7
  MILES SOUTHEAST OF FORT DEPOSIT...MOVING EAST AT 10 MPH.

  HAZARD...60 MPH WIND GUSTS. 

  SOURCE...RADAR INDICATED. 

  IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  HIGHLAND HOME AND LAPINE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3187 8618 3188 8652 3196 8652 3196 8641
      3203 8641 3204 8640 3204 8641 3205 8640
      3205 8630 3197 8630 3196 8619 3193 8618
      3189 8617
TIME...MOT...LOC 1936Z 265DEG 8KT 3194 8646 

HAIL...<.75IN
WIND...60MPH
 
$$

1 follow-up statement

756 
WWUS54 KMOB 311952
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
252 PM CDT SUN JUL 31 2016

ALC013-041-312002-
/O.CAN.KMOB.SV.W.0174.000000T0000Z-160731T2030Z/
CRENSHAW AL-BUTLER AL-
252 PM CDT SUN JUL 31 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN CRENSHAW AND
NORTHEASTERN BUTLER COUNTIES IS CANCELLED...
                
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 CANCELLED.

LAT...LON 3187 8618 3188 8652 3196 8652 3196 8641
      3203 8641 3204 8640 3204 8641 3205 8640
      3205 8630 3197 8630 3196 8619 3193 8618
      3189 8617
TIME...MOT...LOC 1950Z 265DEG 8KT 3194 8642 

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 31, 1:26 PM CDT	Special Weather Statement	MOB	Butler	49 min
Jul 31, 1:43 PM CDT	Special Marine Warning	MOB		62 min
Jul 31, 1:56 PM CDT	Special Weather Statement	MOB	Mobile	49 min
Jul 31, 2:18 PM CDT	Special Weather Statement	MOB	Clarke	42 min
Jul 31, 2:32 PM CDT	Special Weather Statement	MOB	Butler	43 min
Jul 31, 2:49 PM CDT	Special Weather Statement	MOB	Escambia	41 min
Jul 31, 2:56 PM CDT	Special Weather Statement	MOB	Crenshaw	49 min
Jul 31, 3:06 PM CDT	Special Weather Statement	MOB	Wilcox	39 min
Jul 31, 3:12 PM CDT	Areal Flood Advisory	MOB	Mobile	3 hr
Jul 31, 3:22 PM CDT	Special Weather Statement	MOB	Baldwin	38 min
Jul 31, 3:26 PM CDT	Special Weather Statement	MOB	Mobile	49 min
Jul 31, 3:37 PM CDT	Special Weather Statement	MOB	Baldwin	38 min
Jul 31, 3:38 PM CDT	Special Weather Statement	MOB	Baldwin	37 min
Jul 31, 4:06 PM CDT	Special Weather Statement	MOB	Baldwin	69 min
Jul 31, 4:20 PM CDT	Areal Flood Advisory	MOB	Baldwin	3 hr
Jul 31, 4:25 PM CDT	Special Weather Statement	MOB	Covington	50 min
Jul 31, 4:39 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin	18 min
Jul 31, 4:55 PM CDT	Special Weather Statement	MOB	Mobile	50 min
Jul 31, 5:09 PM CDT	Special Weather Statement	MOB	Washington	51 min
Jul 31, 5:16 PM CDT	Special Weather Statement	MOB	Covington	44 min
Jul 31, 6:01 PM CDT	Special Weather Statement	MOB	Covington	59 min
Jul 31, 6:05 PM CDT	Special Weather Statement	MOB	Washington	55 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.