Alert archive / Alabama / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 149, NWS Mobile, AL

June 16, 2011Conecuh County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Jun 16, 2011, 4:45 PM CDT for Conecuh County, Alabama. It was in force for 27 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 16, 2011, 4:45 PM CDT (21:45 UTC)
Expired: Jun 16, 2011, 5:12 PM CDT
In force: 27 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon

County Conecuh County, AL

The radar

The Mobile radar (KMOB), 133 km from the middle of the area, began a volume at 21:48 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.

What was reported inside it

Time	Report	Where	Remark
Jun 16, 4:45 PM CDT	TSTM WND DMG	Evergreen, AL	TREES AND POWER LINES DOWN

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, 9.8 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: 873 J/kg
Mixed-layer CIN: -196 J/kg
Mixed-layer LCL: 1009 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 67 m²/s²
0-3 km storm-relative helicity: 60 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.9

Open this sounding in Storm Lab

The text

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

370 
WUUS54 KMOB 162145
SVRMOB
ALC035-162230-
/O.NEW.KMOB.SV.W.0149.110616T2145Z-110616T2230Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
445 PM CDT THU JUN 16 2011

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

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

* UNTIL 530 PM CDT

* AT 439 PM CDT...LOCAL LAW ENFORCEMENT REPORTED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND 
DAMAGING   WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS NEAR I65 AND 
US 84...AND MOVING WEST AT 15 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  FAIRVIEW AROUND 450 PM CDT...
  I65 AND CR 6 AROUND 510 PM CDT...
  REPTON AROUND 530 PM CDT...

THIS INCLUDES INTERSTATE 65 BETWEEN MILE MARKERS 82 AND 97.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM CDT
THURSDAY EVENING FOR SOUTHWEST ALABAMA AND SOUTHEAST MISSISSIPPI.

&&

LAT...LON 3133 8731 3152 8714 3145 8685 3127 8690
TIME...MOT...LOC 2144Z 105DEG 15KT 3139 8698

$$

2 follow-up statements

557 
WWUS54 KMOB 162201
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
501 PM CDT THU JUN 16 2011

ALC035-162230-
/O.CON.KMOB.SV.W.0149.000000T0000Z-110616T2230Z/
CONECUH AL-
501 PM CDT THU JUN 16 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CDT
FOR CENTRAL CONECUH COUNTY...

AT 457 PM CDT...WEATHER SERVICE RADAR SHOWED A SEVERE THUNDERSTORM 
CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM 
WAS LOCATED NEAR JAY VILLA...MOVING SOUTH AT 15 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  OLD SPARTA BY 505 PM CDT...
  NYMPH BY 510 PM CDT...
  CASTLEBERRY BY 525 PM CDT...
  
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM CDT
THURSDAY EVENING FOR SOUTHWEST ALABAMA AND SOUTHEAST MISSISSIPPI.

&&

LAT...LON 3127 8692 3130 8710 3148 8703 3144 8685
      3127 8690
TIME...MOT...LOC 2200Z 017DEG 12KT 3137 8696

$$

158 
WWUS54 KMOB 162212
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
512 PM CDT THU JUN 16 2011

ALC035-162221-
/O.CAN.KMOB.SV.W.0149.000000T0000Z-110616T2230Z/
CONECUH AL-
512 PM CDT THU JUN 16 2011

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL CONECUH COUNTY IS
CANCELLED...

SCATTERED THUNDERSTORMS CONTINUE OVER SOUTH CENTRAL CONECUH COUNTY 
BUT ARE NOT EXPECTED TO BECOME SEVERE.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM CDT
THURSDAY EVENING FOR SOUTHWEST ALABAMA AND SOUTHEAST MISSISSIPPI.

LAT...LON 3127 8692 3130 8710 3148 8703 3144 8685
      3127 8690
TIME...MOT...LOC 2211Z 105DEG 15KT 3142 8711

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 16, 9:37 AM CDT	Special Marine Warning	MOB		38 min
Jun 16, 10:07 AM CDT	Special Marine Warning	MOB		38 min
Jun 16, 11:45 AM CDT	Severe Thunderstorm Warning	MOB	Baldwin	30 min
Jun 16, 12:38 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin	52 min
Jun 16, 1:21 PM CDT	Severe Thunderstorm Warning	MOB	Mobile	39 min
Jun 16, 1:54 PM CDT	Severe Thunderstorm Warning	MOB	Mobile	32 min
Jun 16, 2:05 PM CDT	Severe Thunderstorm Warning	MOB	Choctaw	25 min
Jun 16, 2:23 PM CDT	Severe Thunderstorm Warning	MOB	Choctaw	52 min
Jun 16, 2:30 PM CDT	Severe Thunderstorm Warning	MOB	Washington	25 min
Jun 16, 2:33 PM CDT	Severe Thunderstorm Warning	MOB	Clarke, Monroe	42 min
Jun 16, 2:36 PM CDT	Severe Thunderstorm Warning	MOB	Mobile	39 min
Jun 16, 3:05 PM CDT	Severe Thunderstorm Warning	MOB	Choctaw	25 min
Jun 16, 3:08 PM CDT	Severe Thunderstorm Warning	MOB	Mobile	22 min
Jun 16, 3:21 PM CDT	Severe Thunderstorm Warning	MOB	Choctaw, Clarke, Washington	24 min
Jun 16, 3:22 PM CDT	Severe Thunderstorm Warning	MOB	Choctaw	23 min
Jun 16, 3:39 PM CDT	Severe Thunderstorm Warning	MOB	Choctaw	51 min
Jun 16, 3:48 PM CDT	Severe Thunderstorm Warning	MOB	Conecuh, Covington, Escambia	42 min
Jun 16, 4:04 PM CDT	Severe Thunderstorm Warning	MOB	Covington	41 min
Jun 16, 4:52 PM CDT	Severe Thunderstorm Warning	MOB	Choctaw	38 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; radar from the NEXRAD Level II archive.