Alert archive / Alabama / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 116, NWS Mobile, AL

June 11, 2011Conecuh County, Covington County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Jun 11, 2011, 4:12 PM CDT for Conecuh County, Covington County, Alabama. It was in force for 48 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 11, 2011, 4:12 PM CDT (21:12 UTC)
Expired: Jun 11, 2011, 5:00 PM CDT
In force: 48 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon

Counties Conecuh County, AL, Covington County, AL

The radar

The Eglin Afb radar (KEVX), 115 km from the middle of the area, began a volume at 21:11 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, 9.2 hours before the alert went out and 202 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: 835 J/kg
Mixed-layer CIN: -107 J/kg
Mixed-layer LCL: 1318 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: 7 m²/s²
0-3 km storm-relative helicity: 0 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.

144 
WUUS54 KMOB 112112
SVRMOB
ALC035-039-112200-
/O.NEW.KMOB.SV.W.0116.110611T2112Z-110611T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
412 PM CDT SAT JUN 11 2011

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN CONECUH COUNTY IN SOUTH CENTRAL ALABAMA...
  NORTHWESTERN COVINGTON COUNTY IN SOUTH CENTRAL ALABAMA...

* UNTIL 500 PM CDT

* AT 407 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 12
  MILES NORTHWEST OF ANDALUSIA...OR NEAR SOUTH...AND MOVING SOUTHWEST
  AT 5 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  BROOKS AROUND 420 PM CDT...
  COHASSETT AROUND 450 PM CDT...
  LOANGO AROUND 455 PM CDT...
  MELROSE...MOUNT UNION...PAUL AND TRAVIS BRIDGE AROUND 500 PM CDT...

&&

LAT...LON 3141 8648 3122 8674 3126 8677 3127 8676
      3127 8678 3142 8690 3153 8666 3153 8658
TIME...MOT...LOC 2112Z 055DEG 6KT 3143 8663

$$

1 follow-up statement

410 
WWUS54 KMOB 112151
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
451 PM CDT SAT JUN 11 2011

ALC035-039-112201-
/O.EXP.KMOB.SV.W.0116.000000T0000Z-110611T2200Z/
COVINGTON AL-CONECUH AL-
451 PM CDT SAT JUN 11 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CONECUH AND
NORTHWESTERN COVINGTON COUNTIES WILL EXPIRE AT 500 PM CDT...

THE STORM THAT PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS.

LAT...LON 3141 8648 3122 8674 3126 8677 3127 8676
      3127 8678 3142 8690 3153 8666 3153 8658
TIME...MOT...LOC 2151Z 055DEG 6KT 3139 8669

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 10, 7:42 PM CDT	Severe Thunderstorm Warning	MOB	Covington	48 min
Jun 10, 8:57 PM CDT	Severe Thunderstorm Warning	MOB	Crenshaw	33 min
Jun 11, 4:17 PM CDT	Severe Thunderstorm Warning	MOB	Butler, Crenshaw	43 min
Jun 11, 4:25 PM CDT	Severe Thunderstorm Warning	MOB	Conecuh, Escambia, Monroe	50 min
Jun 11, 4:48 PM CDT	Severe Thunderstorm Warning	MOB	Escambia	27 min
Jun 11, 4:54 PM CDT	Severe Thunderstorm Warning	MOB	Butler, Conecuh, Monroe, Wilcox	36 min
Jun 11, 5:09 PM CDT	Severe Thunderstorm Warning	MOB	Wilcox	36 min
Jun 11, 5:14 PM CDT	Severe Thunderstorm Warning	MOB	Escambia	31 min
Jun 11, 5:23 PM CDT	Severe Thunderstorm Warning	MOB	Butler, Conecuh, Monroe	52 min
Jun 11, 5:37 PM CDT	Severe Thunderstorm Warning	MOB	Conecuh, Monroe, Wilcox	38 min
Jun 11, 5:47 PM CDT	Areal Flood Advisory	MOB	Butler, Conecuh, Monroe, Wilcox	118 min
Jun 11, 5:51 PM CDT	Areal Flood Advisory	MOB	Clarke, Monroe	114 min
Jun 11, 6:12 PM CDT	Severe Thunderstorm Warning	MOB	Clarke, Monroe	33 min
Jun 11, 6:40 PM CDT	Areal Flood Advisory	MOB	Clarke	2 hr

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.