Alert archive / Alabama / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 91, NWS Mobile, AL

June 7, 2011Monroe County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Jun 7, 2011, 4:36 PM CDT for Monroe County, Alabama. It was in force for 39 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 7, 2011, 4:36 PM CDT (21:36 UTC)
Expired
Jun 7, 2011, 5:15 PM CDT
In force
39 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon

County Monroe County, AL

The radar

The Mobile radar (KMOB), 117 km from the middle of the area, began a volume at 21:35 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, 9.6 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-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.

843 
WUUS54 KMOB 072136
SVRMOB
ALC099-072215-
/O.NEW.KMOB.SV.W.0091.110607T2136Z-110607T2215Z/

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

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN MONROE COUNTY IN SOUTH CENTRAL ALABAMA...
  THIS INCLUDES THE CITY OF FRISCO CITY...

* UNTIL 515 PM CDT

* AT 431 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER 
  SIZE HAIL AND DAMAGING WINDS NEAR 60 MPH WAS LOCATED NEAR FRISCO   
  CITY AND EXCEL...AND WAS MOVING WEST AT 15 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  FRISCO CITY AROUND 445 PM CDT...

&&

LAT...LON 3147 8726 3137 8732 3135 8735 3138 8759
      3158 8753
TIME...MOT...LOC 2136Z 103DEG 14KT 3144 8735

$$

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, 4:46 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, 5:39 PM CDTSevere Thunderstorm WarningMOBBaldwin, Choctaw, Clarke, Mobile, Monroe, Washington51 min
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.