Alert archive / Alabama / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 138, NWS Mobile, AL

July 17, 2012Butler County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Jul 17, 2012, 5:20 PM CDT for Butler County, Alabama. It was in force for 40 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: Jul 17, 2012, 5:20 PM CDT (22:20 UTC)
Expired: Jul 17, 2012, 6:00 PM CDT
In force: 40 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon

County Butler County, AL

What was reported inside it

Time	Report	Where	Remark
Jul 17, 5:30 PM CDT	HAIL 1	Greenville, AL	QUARTER HAIL REPORTED DOWNTOWN GREENVILLE AT 530 PM.

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

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 10.3 hours before the alert went out and 158 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: 1502 J/kg
Mixed-layer CIN: -51 J/kg
Mixed-layer LCL: 1108 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 3 m²/s²
0-3 km storm-relative helicity: 35 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

830 
WUUS54 KMOB 172220
SVRMOB
ALC013-172300-
/O.NEW.KMOB.SV.W.0138.120717T2220Z-120717T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
520 PM CDT TUE JUL 17 2012

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

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

* UNTIL 600 PM CDT

* AT 518 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING
  WINDS OVER 60 MPH WAS LOCATED NEAR GREENVILLE...OR NEAR I65 AND AL
  185...AND MOVING SOUTH AT 10 MPH.

* LOCATIONS IMPACTED INCLUDE...
  I65 AND AL 185...     I65 AND AL 10...      GREENVILLE...

THIS INCLUDES INTERSTATE 65 BETWEEN MILE MARKERS 117 AND 135.

LAT...LON 3164 8655 3170 8681 3194 8671 3189 8650
TIME...MOT...LOC 2221Z 016DEG 9KT 3183 8663

$$

2 follow-up statements

444 
WWUS54 KMOB 172237 RRA
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
537 PM CDT TUE JUL 17 2012

ALC013-172300-
/O.CON.KMOB.SV.W.0138.000000T0000Z-120717T2300Z/
BUTLER AL-
537 PM CDT TUE JUL 17 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM CDT
FOR CENTRAL BUTLER COUNTY...

AT 536 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER
SIZE HAIL AND DAMAGING WINDS OVER 60 MPH WAS LOCATED 2 MILES SOUTH OF
GREENVILLE...OR 4 MILES SOUTHEAST OF I65 AND AL 10...MOVING SOUTH AT
15 MPH.

LOCATIONS IMPACTED INCLUDE...
  I65 AND AL 185...     I65 AND AL 10...      GREENVILLE...

THIS INCLUDES INTERSTATE 65 BETWEEN MILE MARKERS 118 AND 135.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

CONTINUOUS CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
MOVE INDOORS IMMEDIATELY! IF YOU CAN HEAR THUNDER...YOU ARE CLOSE
ENOUGH TO BE STRUCK BY LIGHTNING.

&&

LAT...LON 3164 8655 3170 8681 3194 8671 3189 8650
TIME...MOT...LOC 2237Z 343DEG 12KT 3180 8660

$$

383 
WWUS54 KMOB 172255
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
555 PM CDT TUE JUL 17 2012

ALC013-172305-
/O.EXP.KMOB.SV.W.0138.000000T0000Z-120717T2300Z/
BUTLER AL-
555 PM CDT TUE JUL 17 2012

...THE SEVERE THUNDERSTORM WARNING HAS BEEN ALLOWED TO EXPIRE FOR
CENTRAL BUTLER COUNTY...

AT 555 PM CDT...THE STORM THAT PROMPTED THE WARNING FOR CENTRAL
BUTLER COUNTY HAS WEAKENED TO BELOW SEVERE LIMITS...THUS THE SEVERE
THUNDERSTORM WARNING WILL BE ALLOWED TO EXPIRE AT 600 PM CDT.

TO REPORT SEVERE WEATHER...CALL (800) 284-9059.

LAT...LON 3164 8655 3170 8681 3194 8671 3189 8650
TIME...MOT...LOC 2255Z 343DEG 12KT 3174 8658

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 17, 6:22 AM CDT	Special Marine Warning	MOB		83 min
Jul 17, 12:41 PM CDT	Special Marine Warning	MOB		94 min
Jul 17, 2:18 PM CDT	Special Marine Warning	MOB		27 min
Jul 17, 2:34 PM CDT	Areal Flood Advisory	MOB	Butler	116 min
Jul 17, 2:58 PM CDT	Special Marine Warning	MOB		62 min
Jul 17, 3:33 PM CDT	Severe Thunderstorm Warning	MOB	Covington	16 min
Jul 17, 3:41 PM CDT	Severe Thunderstorm Warning	MOB	Escambia	26 min
Jul 17, 4:10 PM CDT	Severe Thunderstorm Warning	MOB	Escambia	36 min
Jul 17, 4:58 PM CDT	Areal Flood Advisory	MOB	Escambia	2 hr
Jul 17, 5:35 PM CDT	Severe Thunderstorm Warning	MOB	Mobile	40 min
Jul 17, 6:05 PM CDT	Areal Flood Advisory	MOB	Mobile	115 min
Jul 17, 6:36 PM CDT	Special Marine Warning	MOB		84 min
Jul 17, 6:42 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin	38 min
Jul 17, 6:49 PM CDT	Special Marine Warning	MOB		56 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2012 Every severe thunderstorm warning in 2012

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.