Alert archive / Alabama / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 160, NWS Mobile, AL

June 21, 2011Conecuh County, Monroe County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Jun 21, 2011, 8:29 PM CDT for Conecuh County, Monroe County, Alabama. It was in force for 46 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: Jun 21, 2011, 8:29 PM CDT (01:29 UTC)
Expired: Jun 21, 2011, 9:15 PM CDT
In force: 46 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon

Counties Conecuh County, AL, Monroe County, AL

What was reported inside it

Time	Report	Where	Remark
Jun 21, 9:00 PM CDT	TSTM WND DMG	Evergreen, AL	EMA DIRECTOR REPORTS NUMEROUS TREES DOWN AND POWER OUTAGES ACROSS THE COUNTY.

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 00:00Z, 1.5 hours before the alert went out and 177 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: 1308 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 620 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: -75 m²/s²
0-3 km storm-relative helicity: -34 m²/s²
Significant tornado parameter: -0.1
Supercell composite: -1.1

Open this sounding in Storm Lab

The text

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

752 
WUUS54 KMOB 220129
SVRMOB
ALC035-099-220215-
/O.NEW.KMOB.SV.W.0160.110622T0129Z-110622T0215Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
829 PM CDT TUE JUN 21 2011

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CONECUH COUNTY IN SOUTH CENTRAL ALABAMA...
  THIS INCLUDES THE CITY OF EVERGREEN...
  EASTERN MONROE COUNTY IN SOUTH CENTRAL ALABAMA...
  THIS INCLUDES THE CITY OF MONROEVILLE...

* UNTIL 915 PM CDT

* AT 827 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING GOLF BALL SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
  LOCATED ALONG A LINE EXTENDING FROM 13 MILES NORTH OF MONROEVILLE
  TO MONROEVILLE TO 10 MILES SOUTH OF FRISCO CITY...AND MOVING EAST
  AT 40 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  BEATRICE...CORDUROY STATION AND I65 AND AL 41 AROUND 840 PM CDT...
  TURKESTAN AND I65 AND CR 6 AROUND 845 PM CDT...
  MIDWAY...I65 AND US 84...FAIRVIEW AND I65 AND AL 83 AROUND 855 PM
  CDT...
  AL 47 AND CR 29 RO AROUND 900 PM CDT...

THIS INCLUDES INTERSTATE 65 BETWEEN MILE MARKERS 77 AND 105.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

&&

LAT...LON 3172 8691 3165 8692 3161 8691 3160 8689
      3156 8687 3129 8679 3126 8692 3127 8732
      3178 8746 3184 8718 3184 8695
TIME...MOT...LOC 0130Z 263DEG 33KT 3171 8731 3149 8722
          3129 8732

$$

PURDY

1 follow-up statement

428 
WWUS54 KMOB 220149
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
849 PM CDT TUE JUN 21 2011

ALC035-099-220215-
/O.CON.KMOB.SV.W.0160.000000T0000Z-110622T0215Z/
CONECUH AL-MONROE AL-
849 PM CDT TUE JUN 21 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CDT
FOR NORTHEASTERN MONROE AND CONECUH COUNTIES...

AT 849 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE 
EXTENDING FROM 14 MILES SOUTHEAST OF CAMDEN TO 11 MILES NORTHWEST OF 
EVERGREEN TO 13 MILES NORTHWEST OF BREWTON...MOVING EAST AT 40 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  LONDON...COMMERCE AND CR 29 BY 855 PM CDT...
  OLD SPARTA...OWASSA...MIXONVILLE AND I65 AND CR 29 BY 900 PM CDT...
  JAY VILLA AND WILCOX BY 905 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND LARGE 
HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM 
WINDOWS!

&&

LAT...LON 3174 8692 3162 8692 3160 8689 3156 8687
      3129 8679 3129 8680 3127 8688 3127 8730
      3156 8714 3183 8724 3184 8720 3184 8695
TIME...MOT...LOC 0147Z 263DEG 33KT 3184 8712 3157 8702
          3127 8719

$$

PURDY

The office that day

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

Issued	Product	Office	Lasted
Jun 22, 6:23 AM CDT	Special Marine Warning	MOB	52 min
Jun 22, 6:38 AM CDT	Special Marine Warning	MOB	67 min
Jun 22, 9:23 AM CDT	Special Marine Warning	MOB	22 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2011 Every severe thunderstorm warning in 2011

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.