Alert archive / Alabama / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 97, NWS Mobile, AL

June 7, 20116 counties in Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Jun 7, 2011, 5:39 PM CDT for 6 counties in Alabama. It was in force for 51 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 7, 2011, 5:39 PM CDT (22:39 UTC)
Expired
Jun 7, 2011, 6:30 PM CDT
In force
51 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon

Counties Baldwin County, AL, Choctaw County, AL, Clarke County, AL, Mobile County, AL, Monroe County, AL, Washington County, AL

The radar

The Mobile radar (KMOB), 99 km from the middle of the area, began a volume at 22:41 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

TimeReportWhereRemark
Jun 7, 6:08 PM CDTHAIL 1Topton, ALQUARTER SIZE HAIL REPORTED.

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, 10.7 hours before the alert went out and 212 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-pSkew-T log-p diagram, Birmingham, AL at 12:00Z on 2011-06-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 772 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 12:00Z on 2011-06-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -40 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
772 J/kg
Mixed-layer CIN
-166 J/kg
Mixed-layer LCL
1496 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
-40 m²/s²
0-3 km storm-relative helicity
-54 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.

959 
WUUS54 KMOB 072239
SVRMOB
ALC003-023-025-097-099-129-072330-
/O.NEW.KMOB.SV.W.0097.110607T2239Z-110607T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
539 PM CDT TUE JUN 7 2011

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EXTREME SOUTHWESTERN MONROE COUNTY IN SOUTH CENTRAL ALABAMA...
  NORTHWESTERN BALDWIN COUNTY IN SOUTHWEST ALABAMA...
  SOUTH CENTRAL CHOCTAW COUNTY IN SOUTHWEST ALABAMA...
  CLARKE COUNTY IN SOUTHWEST ALABAMA...
  THIS INCLUDES THE CITIES OF...JACKSON...GROVE HILL...
  NORTHEASTERN MOBILE COUNTY IN SOUTHWEST ALABAMA...
  EASTERN WASHINGTON COUNTY IN SOUTHWEST ALABAMA...
  THIS INCLUDES THE CITY OF CHATOM...

* UNTIL 630 PM CDT

* AT 536 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
  LOCATED ALONG A LINE EXTENDING FROM GROVE HILL TO 13 MILES NORTH OF
  BAY MINETTE...AND MOVING WEST AT 20 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  CHOCTAW BLUFF AROUND 545 PM CDT...
  JACKSON AROUND 600 PM CDT...
  JACKSON AROUND 605 PM CDT...
  CORTELUOU AROUND 625 PM CDT...
  SAINT STEPHRNS...MOUNT VERNON...MCINTOSH AND COFFEEVILLE AROUND 630
  PM CDT...

&&

LAT...LON 3184 8770 3103 8762 3106 8822 3186 8829
TIME...MOT...LOC 2239Z 092DEG 16KT 3175 8780 3107 8773

$$
1 follow-up statement
213 
WWUS54 KMOB 072304
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
604 PM CDT TUE JUN 7 2011

ALC099-072314-
/O.CAN.KMOB.SV.W.0097.000000T0000Z-110607T2330Z/
MONROE AL-
604 PM CDT TUE JUN 7 2011

...THE SEVERE THUNDERSTORM WARNING FOR EXTREME SOUTHWESTERN MONROE
COUNTY IS CANCELLED...

LAT...LON 3184 8782 3135 8773 3137 8775 3133 8778
      3131 8776 3131 8773 3103 8768 3106 8822
      3185 8829
TIME...MOT...LOC 2304Z 090DEG 22KT 3171 8808 3107 8789

$$

ALC003-023-025-097-129-072330-
/O.CON.KMOB.SV.W.0097.000000T0000Z-110607T2330Z/
WASHINGTON AL-CLARKE AL-CHOCTAW AL-BALDWIN AL-MOBILE AL-
604 PM CDT TUE JUN 7 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM CDT
FOR NORTHEASTERN MOBILE...NORTHWESTERN BALDWIN...SOUTH CENTRAL
CHOCTAW...WESTERN CLARKE AND EASTERN WASHINGTON COUNTIES...

AT 559 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER
SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM TATTLERSVILLE TO LATHAM...OR
ALONG A LINE EXTENDING FROM 16 MILES WEST OF GROVE HILL TO 14 MILES
NORTH OF BAY MINETTE...MOVING WEST AT 25 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  SERVICE...WAGARVILLE AND TOINETTE BY 610 PM CDT...
  FORT STODDARD...CALVERT...MCINTOSH AND MALCOLM BY 615 PM CDT...
  BLADON SPRINGS...MOUNT VERNON AND SILVER CROSS BY 620 PM CDT...

LAT...LON 3184 8782 3135 8773 3137 8775 3133 8778
      3131 8776 3131 8773 3103 8768 3106 8822
      3185 8829
TIME...MOT...LOC 2304Z 090DEG 22KT 3171 8808 3107 8789

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 7, 12:33 AM CDTSpecial Marine WarningMOB87 min
Jun 7, 2:11 AM CDTSpecial Marine WarningMOB94 min
Jun 7, 3:16 AM CDTSpecial Marine WarningMOB44 min
Jun 7, 4:10 PM CDTSevere Thunderstorm WarningMOBEscambia35 min
Jun 7, 4:30 PM CDTSevere Thunderstorm WarningMOBConecuh, Escambia45 min
Jun 7, 4:36 PM CDTSevere Thunderstorm WarningMOBMonroe39 min
Jun 7, 4:46 PM CDTSevere Thunderstorm WarningMOBWashington44 min
Jun 7, 4:52 PM CDTSevere Thunderstorm WarningMOBBaldwin, Clarke, Escambia, Monroe38 min
Jun 7, 5:07 PM CDTSevere Thunderstorm WarningMOBClarke, Washington16 min
Jun 7, 5:18 PM CDTSevere Thunderstorm WarningMOBWashington42 min
Jun 7, 5:19 PM CDTSevere Thunderstorm WarningMOBBaldwin, Clarke, Escambia, Monroe, Washington41 min
Jun 7, 5:35 PM CDTFlash Flood WarningMOBWashington4 hr
Jun 7, 5:53 PM CDTSevere Thunderstorm WarningMOBWashington37 min
Jun 7, 6:08 PM CDTSevere Thunderstorm WarningMOBWashington52 min
Jun 7, 6:17 PM CDTSevere Thunderstorm WarningMOBMobile, Washington43 min
Jun 7, 6:38 PM CDTSevere Thunderstorm WarningMOBBaldwin, Mobile37 min
Jun 7, 6:47 PM CDTSpecial Marine WarningMOB88 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2011Every 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.