Alert archive / Alabama / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 113, NWS Mobile, AL

June 10, 2011Covington County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Jun 10, 2011, 7:42 PM CDT for 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 10, 2011, 7:42 PM CDT (00:42 UTC)
Expired: Jun 10, 2011, 8:30 PM CDT
In force: 48 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon

County Covington County, AL

The radar

The Eglin Afb radar (KEVX), 73 km from the middle of the area, began a volume at 00:42 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

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 0.7 hours before the alert went out and 207 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: 1853 J/kg
Mixed-layer CIN: -27 J/kg
Mixed-layer LCL: 1544 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 31 m²/s²
0-3 km storm-relative helicity: 70 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.

020 
WUUS54 KMOB 110042
SVRMOB
ALC039-110130-
/O.NEW.KMOB.SV.W.0113.110611T0042Z-110611T0130Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
742 PM CDT FRI JUN 10 2011

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN COVINGTON COUNTY IN SOUTH CENTRAL ALABAMA...
  THIS INCLUDES THE CITIES OF...OPP...FLORALA...

* UNTIL 830 PM CDT

* AT 741 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED 6 MILES SOUTHEAST OF OPP...OR
  NEAR KINSTON...AND MOVING SOUTHWEST AT 15 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  ONYCHA AROUND 800 PM CDT...
  HORN HILL AROUND 805 PM CDT...
  LOCKHART AND FLORALA AROUND 830 PM CDT...

&&

LAT...LON 3099 8630 3099 8636 3114 8652 3138 8620
      3137 8618 3112 8618
TIME...MOT...LOC 0043Z 049DEG 12KT 3123 8619

$$

1 follow-up statement

741 
WWUS54 KMOB 110121
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
821 PM CDT FRI JUN 10 2011

ALC039-110131-
/O.EXP.KMOB.SV.W.0113.000000T0000Z-110611T0130Z/
COVINGTON AL-
821 PM CDT FRI JUN 10 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN COVINGTON COUNTY
WILL EXPIRE AT 830 PM CDT...

THE STORM HAS WEAKENED...WITH NO RE-ISSUANCE OF A WARNING FOR THIS 
STORM ANTICIPATED.

LAT...LON 3099 8630 3099 8636 3114 8652 3138 8620
      3137 8618 3112 8618
TIME...MOT...LOC 0121Z 049DEG 12KT 3115 8630

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 10, 8:57 PM CDT	Severe Thunderstorm Warning	MOB	Crenshaw	33 min
Jun 11, 4:12 PM CDT	Severe Thunderstorm Warning	MOB	Conecuh, Covington	48 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.